CN219421021U - Sound generating device and electronic equipment - Google Patents

Abstract

The utility model discloses a sound generating device and an electronic device, wherein the sound generating device comprises: the device comprises a shell, a magnetic circuit system, a first vibration system and a second vibration system. The magnetic circuit system comprises a magnetic yoke, a central magnetic part and a side magnetic part, wherein the central magnetic part and the side magnetic part are respectively arranged on two surfaces of the magnetic yoke which are oppositely arranged, two ends of the central magnetic part along a first direction are arranged with the side magnetic part at intervals to form a first magnetic gap, two ends of the central magnetic part along a second direction are arranged with the side magnetic part at intervals to form a second magnetic gap, the parts of the first voice coil and the second voice coil along the second direction are inserted on two opposite sides of the first magnetic gap and are arranged in a staggered mode along the vibration direction of the first vibration system/the second vibration system, and the parts of the first voice coil and the second voice coil along the first direction are inserted on two opposite sides of the second magnetic gap and are arranged in a positive mode along the vibration direction of the first vibration system/the second vibration system. The sounding device has the advantages of compact structure and high sounding sensitivity.

Description

Sound generating device and electronic equipment

Technical Field

The present utility model relates to electroacoustic devices, and more particularly, to a sound generating device and an electronic device.

Background

The loudspeaker is a transducer for converting electric signals into acoustic signals, and is widely applied to electronic equipment such as mobile phones, computers and the like. With the miniaturization and thinning demands of electronic devices, speakers are gradually developed toward miniaturization and thinning, but with the increase of the demands of users, the performance of speakers is increasingly focused on pursuing high loudness and low distortion. In order to meet the above requirements, some double-sided sound-producing speakers begin to appear, i.e. the speakers have two sets of vibration systems to achieve the purpose of double-sided sound production, thereby meeting the requirement of high loudness.

In the related art, the internal structure of the double-sided sounding speaker is a shared magnetic circuit system structure, the speaker is provided with two voice coils, two sides of the speaker are respectively driven by the voice coils corresponding to each other, the two voice coils are different in size, and the long axis size and the short axis size of one voice coil are both larger than the other voice coil, so that the distance between the side magnet and the center magnet in the magnetic gap of the magnetic circuit system of the speaker is larger, the distance between the voice coil and the center magnet is further, and the waste of magnetic induction lines in the magnetic field is caused, so that the sounding sensitivity of the speaker is reduced.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the sound generating device which has the advantages of compact structure and high sound generating sensitivity.

The utility model also provides electronic equipment with the sounding device.

According to an embodiment of the first aspect of the present utility model, a sound emitting device includes: a housing having a first direction and a second direction perpendicular to each other; the magnetic circuit system is fixed on the shell and comprises a magnetic yoke, a central magnetic part and a side magnetic part, wherein the central magnetic part and the side magnetic part are respectively arranged on two surfaces of the magnetic yoke which are oppositely arranged; the first vibration system and the second vibration system are arranged on two opposite sides of the magnetic circuit system, the first vibration system comprises a first voice coil, and the second vibration system comprises a second voice coil; the center magnetic part is arranged at intervals along the two ends of the first direction and the side magnetic part to form a first magnetic gap, the center magnetic part is arranged at intervals along the two ends of the second direction and the side magnetic part to form a second magnetic gap, the parts of the first voice coil and the second voice coil along the second direction are inserted at the opposite sides of the first magnetic gap and are arranged along the vibration direction of the first vibration system/the second vibration system in a staggered manner, and the parts of the first voice coil and the second voice coil along the first direction are inserted at the opposite sides of the second magnetic gap and are arranged along the vibration direction of the first vibration system/the second vibration system in a positive manner.

According to the sound generating device disclosed by the embodiment of the first aspect of the utility model, the first vibration system and the second vibration system are arranged on the two opposite sides of the magnetic circuit system, and the first vibration system and the second vibration system can realize the double-sided sound generating effect of the sound generating device through reverse vibration, so that the sound generating sensitivity of the sound generating device can be improved. The first vibration system and the second vibration system can realize the offset of sound waves of double-sided sound production in a far field through the same-direction vibration, so that the privacy of conversation can be improved. The first vibration system and the second vibration system drive and vibrate through the shared magnetic circuit system, so that the thickness of the sound generating device is thinner, the structure is more compact, and the thin and miniaturized design of the sound generating device can be met. The arrangement volume of the central magnet is larger, the width of the magnetic gap can be reduced, and the magnetic induction lines in the magnetic gap are more dense, so that the B value of the magnetic field can be increased, and the sounding sensitivity of the sounding device can be improved.

According to some embodiments of the utility model, the magnetic yoke includes a first supporting portion, a connecting portion and a second supporting portion, a mounting hole is provided at a center position of the first supporting portion, the second supporting portion is opposite to the mounting hole and is located on a different plane from the first supporting portion, the connecting portion is provided at two ends of the second supporting portion in the first direction to connect the first supporting portion and the second supporting portion, the center magnetic portion is provided at a side of the second supporting portion close to the mounting hole, and the side magnetic portion is provided at a side of the first supporting portion close to the second supporting portion.

In some embodiments of the present utility model, a first sub-magnetic gap is formed between the side magnetic portion and the second supporting portion, a second sub-magnetic gap is formed between the center magnetic portion and the first supporting portion, the first sub-magnetic gap and the second sub-magnetic gap form the first magnetic gap, one end of the first voice coil is inserted into the first sub-magnetic gap, and one end of the second voice coil is inserted into the second sub-magnetic gap.

In some embodiments of the utility model, the central magnetic portion includes a central magnet and a central washer, the central magnet being disposed on the second support portion, the central washer being disposed on a side of the central magnet remote from the second support portion; the side magnet portion comprises a side magnet and Bian Huasi, wherein the side magnet is arranged on the first supporting portion, and Bian Huasi is arranged on one side, away from the first supporting portion, of the side magnet.

In some embodiments of the present utility model, the Bian Huasi is formed into an annular integral structure, the Bian Huasi includes an annular fixing bracket and a washer portion provided on the fixing bracket, the fixing bracket is connected to the housing, one end of the washer portion is connected to the fixing bracket, the other end of the washer portion extends toward a direction approaching the central magnetic portion, and the washer portion is provided on a side of the side magnet away from the first support portion.

In some embodiments of the present utility model, two ends of the second supporting portion in the second direction are spaced apart from the first supporting portion, and the first supporting portion, the second supporting portion and the connecting portion are formed as an integral piece.

According to some embodiments of the utility model, the first vibration system further comprises a first vibration film assembly, the second vibration system further comprises a second vibration film assembly, the first vibration film assembly and the second vibration film assembly are arranged on two opposite sides of the magnetic circuit system, one end of the first voice coil away from the central magnetic part is connected with the first vibration film assembly, and one end of the second voice coil away from the central magnetic part is connected with the second vibration film assembly.

In some embodiments of the present utility model, the first diaphragm assembly includes a first diaphragm and a first dome, the first diaphragm includes a first outer fixing portion, a first ring-folded portion, and a first inner fixing portion, the first outer fixing portion is fixed to the housing, two ends of the first ring-folded portion are respectively connected to the first outer fixing portion and the first inner fixing portion, the first ring-folded portion is concavely disposed toward a direction close to the side magnetic portion, and the first inner fixing portion is connected to the first dome; and/or, the second vibrating diaphragm assembly includes second vibrating diaphragm and second ball top, the second vibrating diaphragm includes second external fixation portion, second ring portion and second internal fixation portion, second external fixation portion is fixed in the casing, the both ends of second ring portion respectively with second external fixation portion with second internal fixation portion is connected, second ring portion towards being close to the sunken setting of direction of limit magnetic part, second internal fixation portion with second ball top is connected.

In some embodiments of the present utility model, the magnetic circuit is formed into a square structure, four corners of the central magnetic part and the side magnetic part are respectively arranged at intervals to form an avoidance space, and the sound generating device further includes: the first centering support piece assembly is arranged on one side, far away from the first vibrating diaphragm assembly, of the first voice coil, and comprises a first inner fixing piece, a first outer fixing piece and a first elastic deformation piece, wherein the first inner fixing piece is arranged at the four corners of the first voice coil, the first outer fixing piece is fixed on the shell, and the first elastic deformation piece is arranged in the avoidance space to connect the first inner fixing piece and the first outer fixing piece; the second centering piece subassembly, the second centering piece subassembly is located the second voice coil loudspeaker voice coil keep away from one side of second vibrating diaphragm subassembly, the second centering piece subassembly includes second internal fixation spare, second external fixation spare and second elastic deformation spare, the second internal fixation spare is located the four corners position of second voice coil loudspeaker voice coil, the second external fixation spare is fixed in the casing, the second elastic deformation spare is located in the dodging the space in order to connect second internal fixation spare with second external fixation spare.

An electronic device according to an embodiment of the second aspect of the present utility model includes the sound emitting apparatus according to the above-described embodiment of the present utility model.

According to the electronic equipment provided by the embodiment of the utility model, by arranging the sounding device, the structural design of the sounding device is compact, the sounding sensitivity is high, the tone quality of the electronic equipment can be effectively improved, and the miniaturized design requirement of the electronic equipment can be met.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of the overall structure of a sound emitting device according to one embodiment of the present utility model;

FIG. 2 is a schematic diagram of an exploded construction of a sound emitting device according to one embodiment of the present utility model;

FIG. 3 is a vertical cross-sectional view of a sound emitting device along a first direction according to one embodiment of the present utility model;

FIG. 4 is a vertical cross-sectional view of a sound emitting device along a second direction according to one embodiment of the present utility model;

fig. 5 is a schematic partial structure of a sound emitting device according to an embodiment of the present utility model.

Reference numerals:

the sound-emitting device 100 is configured to emit light,

the housing 1, the first sub-housing 11, the second sub-housing 12,

magnetic circuit 2, magnetic yoke 21, first support 211, connection 212, second support 213, central magnetic portion 22, central magnet 221, central washer 222, side magnetic portion 23, side magnets 231, bian Huasi 232, fixed bracket 2321, washer 2322, first magnetic gap 2a, first magnetic sub-gap 2a1, second magnetic sub-gap 2a2, second magnetic gap 2b, avoiding space 2c,

the first vibration system 3, the first diaphragm assembly 31, the first diaphragm 311, the first collar portion 3111, the first dome 312, the first voice coil 32, the first centering pad assembly 33, the first sub-pad 33a, the second sub-pad 33b, the first inner fixing member 331, the first outer fixing member 332, the first elastic deformation member 333,

the second vibration system 4, the second vibration film assembly 41, the second vibration film 411, the second collar portion 4111, the second dome 412, the second voice coil 42, the second centering support assembly 43, the third sub-support 43a, the fourth sub-support 43b, the second inner fixing member 431, the second outer fixing member 432, the second elastic deformation member 433,

the front cover 5 is provided with a front opening,

a dust cover 6.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar components or components having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

A sound emitting device 100 according to an embodiment of the first aspect of the present utility model is described in detail below with reference to fig. 1 to 5, and the sound emitting device 100 may be a speaker unit.

As shown in fig. 1-2, a sound generating apparatus 100 according to an embodiment of the first aspect of the present utility model includes: a housing 1, a magnetic circuit system 2, a first vibration system 3 and a second vibration system 4.

Wherein the housing 1 has a first direction (x-direction as shown in fig. 1) and a second direction (y-direction as shown in fig. 1) perpendicular to each other. For example, the case 1 may be formed in a rectangular parallelepiped structure, the first direction may be a length direction of the rectangular parallelepiped, and the second direction may be a width direction of the rectangular parallelepiped.

As shown in fig. 3 to 4, the magnetic circuit 2 may be fixed to the housing 1, and the magnetic circuit 2 may include a magnetic yoke 21, a central magnetic portion 22, and a side magnetic portion 23, where the central magnetic portion 22 and the side magnetic portion 23 are disposed on two opposite surfaces of the magnetic yoke 21, respectively. That is, the yoke 21 may have a first surface and a second surface disposed opposite to each other, the center magnetic portion 22 may be provided on the first surface, and the side magnetic portion 23 may be provided on the second surface. The center magnetic portion 22 may be spaced apart from the side magnetic portion 23 at both ends in the first direction to form a first magnetic gap 2a, and the center magnetic portion 22 may be spaced apart from the side magnetic portion 23 at both ends in the second direction to form a second magnetic gap 2b.

As shown in fig. 3 to 4, the first vibration system 3 and the second vibration system 4 may be disposed at opposite sides of the magnetic circuit system 2, the first vibration system 3 may include a first voice coil 32, the second vibration system 4 may include a second voice coil 42, portions of the first voice coil 32 and the second voice coil 42 in the second direction may be inserted at opposite sides of the first magnetic gap 2a, and portions of the first voice coil 32 and the second voice coil 42 in the second direction may be disposed in a staggered manner in a vibration direction (z direction as shown in fig. 1) of the first vibration system 3/the second vibration system 4, portions of the first voice coil 32 and the second voice coil 42 in the first direction may be inserted at opposite sides of the second magnetic gap 2b, and portions of the first voice coil 32 and the second voice coil 42 in the first direction may be disposed directly opposite to the vibration direction of the first vibration system 3/the second vibration system 4.

Specifically, the first voice coil 32 and the second voice coil 42 each have a portion extending in the first direction and a portion extending in the second direction. Wherein, the first magnetic gap 2a is formed by arranging the two ends of the central magnetic part 22 along the first direction and the side magnetic part 23 at intervals, so that the first magnetic gap 2a extends along the second direction in the horizontal direction, and the parts of the first voice coil 32 and the second voice coil 42 along the second direction can be inserted on the two opposite sides of the first magnetic gap 2 a. The second magnetic gap 2b is formed by disposing both ends of the center magnetic portion 22 in the second direction at intervals from the side magnetic portions 23, so that the second magnetic gap 2b extends in the first direction in the horizontal direction, and portions of the first voice coil 32 and the second voice coil 42 in the first direction may be interposed on opposite sides of the second magnetic gap 2b. Wherein, the extension length of the first voice coil 32 along the first direction is greater than the extension length of the second voice coil 42, and the parts of the first voice coil 32 and the second voice coil 42 along the second direction are arranged in a staggered manner along the vibration direction of the first vibration system 3/the second vibration system 4. The extension length of the first voice coil 32 in the second direction is equal to the extension length of the second voice coil 42 in the second direction, and the portions of the first voice coil 32 and the second voice coil 42 in the first direction are disposed directly opposite to each other in the vibration direction of the first vibration system 3/the second vibration system 4.

According to the sound generating device 100 of the embodiment of the first aspect of the present utility model, by providing the first vibration system 3 and the second vibration system 4 on opposite sides of the magnetic circuit system 2, the first vibration system 3 and the second vibration system 4 can realize the double-sided sound generating effect of the sound generating device 100 through reverse vibration, so that the sound generating sensitivity of the sound generating device 100 can be improved. The first vibration system 3 and the second vibration system 4 can realize the cancellation of sound waves of double-sided sound production in a far field through the same-direction vibration, so that the privacy of conversation can be improved. The first vibration system 3 and the second vibration system 4 perform driving vibration through the shared magnetic circuit system 2, so that the thickness of the sound generating device 100 can be thinner, the structure is more compact, and the thin and miniaturized design of the sound generating device 100 can be satisfied. By arranging the first voice coil 32 and the second voice coil 42 in the first direction along the vibration direction of the first vibration system 3/the second vibration system 4, that is, the extension length of the first voice coil 32 along the second direction is equal to the extension length of the second voice coil 42 along the second direction, compared with the case that the conventional long and short axes of the first voice coil 32 and the second voice coil 42 are different in size, the central magnet 221 of the utility model has larger arrangement volume, can reduce the width of the magnetic gap, and enables the magnetic induction lines in the magnetic gap to be more dense, thereby increasing the B value of the magnetic field and further improving the sounding sensitivity of the sounding device 100.

As shown in fig. 2 to 3, according to some embodiments of the present utility model, the magnetic yoke 21 may include a first supporting portion 211, a connection portion 212, and a second supporting portion 213, wherein a mounting hole is provided at a center position of the first supporting portion 211, the second supporting portion 213 is opposite to the mounting hole and is located on a different plane from the first supporting portion 211, the connection portion 212 is provided at both ends of the second supporting portion 213 in a first direction to connect the first supporting portion 211 and the second supporting portion 213, the central magnetic portion 22 is provided at a side of the second supporting portion 213 adjacent to the mounting hole, and the side magnetic portion 23 is provided at a side of the first supporting portion 211 adjacent to the second supporting portion 213.

Specifically, the magnetic yoke 21 may be formed in a bowl shape, the first supporting portion 211 and the second supporting portion 213 are located at two ends of the connecting portion 212, respectively, and the first supporting portion 211 and the second supporting portion 213 are located on different planes, so that an installation space can be defined between the connecting portion 212 and the second supporting portion 213, the central magnetic portion 22 may be located in the second supporting portion 213 through the installation hole, and the side magnetic portion 23 is located at one side of the first supporting portion 211 near the second supporting portion 213, so that the side magnetic portion 23 and the central magnetic portion 22 are located in the same horizontal height range, thereby enabling the overall structure of the magnetic circuit 2 to be more compact, reducing the overall height of the magnetic circuit 2, and enabling the thin design of the sound generating device 100.

As shown in fig. 3, in some embodiments of the present utility model, a first sub-magnetic gap 2a1 may be formed between the side magnetic portion 23 and the second supporting portion 213, a second sub-magnetic gap 2a2 may be formed between the center magnetic portion 22 and the first supporting portion 211, the first sub-magnetic gap 2a1 and the second sub-magnetic gap 2a2 form a first magnetic gap 2a, one end of the first voice coil 32 is inserted into the first sub-magnetic gap 2a1, and one end of the second voice coil 42 is inserted into the second sub-magnetic gap 2a2. Thus, by the above arrangement, the first voice coil 32 and the second voice coil 42 can be nested in the first direction, the center magnetic portion 22 forms the first sub-magnetic gap 2a1 and the second sub-magnetic gap 2a2 corresponding to the first voice coil 32 and the second voice coil 42 respectively with the side magnetic portion 23 through the yoke 21, and sharing of the magnetic circuit 2 is achieved, so that the overall structure of the magnetic circuit 2 can be made more compact.

As shown in fig. 2-4, in some embodiments of the present utility model, the central magnetic portion 22 may include a central magnet 221 and a central washer 222, the central magnet 221 may be disposed on the second support portion 213, the central washer 222 is disposed on a side of the central magnet 221 away from the second support portion 213, the side magnetic portion 23 includes side magnets 231 and Bian Huasi, the side magnet 231 is disposed on the first support portion 211, and the side magnet Bian Huasi 232 is disposed on a side of the side magnet 231 away from the first support portion 211. Specifically, the central washer 222 and Bian Huasi 232 can each function as magnetism collecting, whereby the magnetic induction lines can be made to collect near the first magnetic gap 2a and the second magnetic gap 2b, increasing the magnetic field strength near the first magnetic gap 2a and the second magnetic gap 2b. When the first voice coil 32 and the second voice coil 42 vibrate up and down, BL values corresponding to the first voice coil 32 and the second voice coil 42 may be increased, so that driving forces of the first voice coil 32 and the second voice coil 42 may be increased, and thus sounding loudness of the first vibration system 3 and the second vibration system 4 may be increased, and sounding effect of the sounding device 100 may be improved.

As shown in fig. 2, in some embodiments of the present utility model, the Bian Huasi 232 may be formed as a ring-shaped integrated structure, and the Bian Huasi 232 may include a ring-shaped fixing bracket 2321 and a washer portion 2322 provided on the fixing bracket 2321, the fixing bracket 2321 is connected to the housing 1, one end of the washer portion 2322 is connected to the fixing bracket 2321, the other end of the washer portion 2322 extends toward a direction approaching the central magnetic portion 22, and the washer portion 2322 is provided on a side of the side magnet 231 away from the first support portion 211. Therefore, through the arrangement, the structural design of the edge washer 232 is simpler, and the assembly is more convenient.

Alternatively, the Bian Huasi 232 can be formed as an integral injection molding with the housing 1, i.e. the fixing bracket 2321 is injection molded with the housing 1, and the washer portions 2322 are disposed in one-to-one correspondence with the side magnets 231 and on a side of the side magnets 231 away from the first supporting portion 211.

As shown in fig. 2, in some embodiments of the present utility model, both ends of the second supporting portion 213 in the second direction may be spaced apart from the first supporting portion 211, and the first supporting portion 211, the second supporting portion 213, and the connecting portion 212 are formed as an integral piece. Therefore, through the above arrangement, the two ends of the second supporting portion 213 in the second direction are spaced from the first supporting portion 211 to define the end opening of the second magnetic gap 2b, so that the first voice coil 32 and the second voice coil 42 are smoothly inserted into the second magnetic gap 2b, and the first supporting portion 211, the second supporting portion 213 and the connecting portion 212 are formed into an integral part, so that not only the integral structure of the magnetic yoke 21 can be simplified, but also the assembly process can be simplified, and the assembly efficiency can be improved.

As shown in fig. 2-4, according to some embodiments of the present utility model, the first vibration system 3 further includes a first diaphragm assembly 31, the second vibration system 4 further includes a second diaphragm assembly 41, the first diaphragm assembly 31 and the second diaphragm assembly 41 are disposed on opposite sides of the magnetic circuit system 2, one end of the first voice coil 32 away from the central magnetic portion 22 is connected to the first diaphragm assembly 31, and one end of the second voice coil 42 away from the central magnetic portion 22 is connected to the second diaphragm assembly 41.

Specifically, one end of the first voice coil 32 may be connected to the first diaphragm assembly 31, the other end of the first voice coil 32 is inserted into one end of the magnetic gap (the first magnetic gap 2a and the second magnetic gap 2 b), one end of the second voice coil 42 may be connected to the second diaphragm assembly 41, and the other end of the second voice coil 42 is inserted into the other end of the magnetic gap (the first magnetic gap 2a and the second magnetic gap 2 b). When the acoustic device 100 is operated, the vibration direction of the first voice coil 32 and the second voice coil 42 can be controlled by controlling the current direction in the first voice coil 32 and the second voice coil 42. When the first voice coil 32 and the second voice coil 42 vibrate reversely, the sound waves generated by the vibration of the first diaphragm assembly 31 and the second diaphragm assembly 41 have the same phase, so that the superposition of the double-sided sound waves of the sound generating device 100 can be realized, and the sound generating sensitivity of the sound generating device 100 is improved. When the first voice coil 32 and the second voice coil 42 vibrate in the same direction, the sound waves generated by the vibration of the first diaphragm assembly 31 and the second diaphragm assembly 41 have opposite phases, and the two sound waves with opposite phases cancel each other in the far field, so that the privacy effect of the sound generating device 100 can be improved.

As shown in fig. 2 to 4, in some embodiments of the present utility model, the first diaphragm assembly 31 may include a first diaphragm 311 and a first dome 312, the first diaphragm 311 includes a first outer fixing portion, a first ring portion 3111 and a first inner fixing portion, the first outer fixing portion may be fixed to the housing 1, two ends of the first ring portion 3111 are respectively connected to the first outer fixing portion and the first inner fixing portion, the first ring portion 3111 is concavely disposed toward a direction close to the side magnetic portion 23, and the first inner fixing portion is connected to the first dome 312; and/or the second diaphragm assembly 41 may include a second diaphragm 411 and a second dome 412, where the second diaphragm 411 includes a second external fixing portion, a second ring-folded portion 4111 and a second internal fixing portion, the second external fixing portion is fixed to the housing 1, two ends of the second ring-folded portion 4111 are connected to the second external fixing portion and the second internal fixing portion, the second ring-folded portion 4111 is concavely disposed toward a direction close to the side magnetic portion 23, and the second internal fixing portion is connected to the second dome 412.

That is, the first ring portion 3111 may be provided so as to be recessed in a direction toward the side magnetic portion 23, the second ring portion 4111 may be provided so as to be recessed in a direction toward the side magnetic portion 23, and both the first ring portion 3111 and the second ring portion 4111 may be provided so as to be recessed in a direction toward the side magnetic portion 23. Therefore, the first ring-folded portion 3111 and the second ring-folded portion 4111 are disposed to be recessed toward the direction close to the side magnetic portion 23, so that the occupied space in the Z direction of the sound generating apparatus 100 can be effectively reduced (the Z-direction space can be reduced by about 15%), and the installation space occupied by the whole sound generating apparatus 100 can be reduced, thereby meeting the miniaturization design requirement of the sound generating apparatus 100.

In one embodiment of the present utility model, the housing 1 includes a first sub-housing 11 and a second sub-housing 12 that are provided separately, and the first sub-housing 11 and the second sub-housing 12 are snap-fit or adhesive-fit. The two ends of the first diaphragm assembly 31 are respectively fixed to the first sub-housing 11, the two ends of the second diaphragm assembly 41 are respectively fixed to the second sub-housing 12, the first sub-housing 11 and the Bian Huasi 232 are connected in an adhesive mode or are formed in an integral injection mode, and the second sub-housing 12 is connected in an adhesive mode or is formed in an integral injection mode with the magnetic conducting yoke 21. The side magnets 231 are four, bian Huasi 232 include a fixing bracket 2321 and four washer portions 2322 which are integrally formed, the fixing bracket 2321 is square and is integrally injection molded with the first sub-housing 11, the four washer portions 2322 are respectively arranged on one side, close to the central magnetic portion 22, of four sides of the fixing bracket 2321, and each washer portion 2322 is arranged on the top end of the corresponding side magnet 231. The magnetic yoke 21 includes a ring-shaped first supporting portion 211, a connecting portion 212 and a second supporting portion 213, the first supporting portion 211 is disposed around the second supporting portion 213 and located in different planes, two ends of the second supporting portion 213 in the first direction are connected with the connecting portion 212, two ends of the second supporting portion 213 in the second direction are spaced from the first supporting portion 211, and when the second sub-housing 12 is matched with the magnetic yoke 21, an outer edge of the first supporting portion 211 and the second sub-housing 12 are formed into an integral injection molding. The first diaphragm assembly 31 includes a first diaphragm 311 and a first dome 312, the second diaphragm assembly 41 includes a second diaphragm 411 and a second dome 412, a first ring portion 3111 of the first diaphragm 311 is concavely disposed toward a direction close to the magnetic portion 23, and a second ring portion 4111 of the second diaphragm 411 is concavely disposed toward a direction close to the first supporting portion 211. Thus, by the above arrangement, the assembly relationship between Bian Huasi 232, the magnet yoke 21 and the housing 1 can be simplified, and the assembly efficiency can be improved. Moreover, the sound generating apparatus 100 is more compact and meets the requirements of miniaturized design.

In another specific example of the present utility model, the sound generating device 100 may further include a front cover 5 and a dust cover 6, where the front cover 5 covers a side of the first diaphragm assembly 31 away from the magnetic circuit system 2, the front cover 5 may protect the first diaphragm assembly 31, the dust cover 6 is disposed on a side of the front cover 5 away from the first diaphragm assembly 31, and as the name implies, the dust cover 6 may play a role in preventing dust and impurities from entering the sound generating device 100 and damaging the sound generating device 100.

As shown in fig. 2 to 5, in some embodiments of the present utility model, the magnetic circuit system 2 may be formed as a square structure, four corners of the central magnetic portion 22 and the side magnetic portion 23 are respectively disposed at intervals to form an avoidance space 2c, the sound generating apparatus 100 may further include a first centering pad assembly 33 and a second centering pad assembly 43, the first centering pad assembly 33 is disposed on a side of the first voice coil 32 away from the first diaphragm assembly 31, the first centering pad assembly 33 may include a first inner fixing member 331, a first outer fixing member 332 and a first elastic deformation member 333, the first inner fixing member 331 is disposed at four corners of the first voice coil 32, the first outer fixing member 332 is fixed to the housing 1, and the first elastic deformation member 333 is disposed in the avoidance space 2c to connect the first inner fixing member 331 and the first outer fixing member 332; the second centering support assembly 43 is disposed on a side of the second voice coil 42 away from the second diaphragm assembly 41, and the second centering support assembly 43 may include a second inner fixing member 431, a second outer fixing member 432, and a second elastic deformation member 433, where the second inner fixing member 431 is disposed at four corners of the second voice coil 42, the second outer fixing member 432 is fixed to the housing 1, and the second elastic deformation member 433 is disposed in the avoidance space 2c to connect the second inner fixing member 431 and the second outer fixing member 432.

It can be understood that, since the two ends of the central magnetic portion 22 along the first direction may be spaced from the side magnetic portion 23 to form the first magnetic gap 2a, the two ends of the central magnetic portion 22 along the second direction may be spaced from the side magnetic portion 23 to form the second magnetic gap 2b, the first magnetic gap 2a includes the first sub-magnetic gap 2a1 formed between the side magnetic portion 23 and the second supporting portion 213 and the second sub-magnetic gap 2a2 formed between the central magnetic portion 22 and the first supporting portion 211, one end of the first voice coil 32 is inserted into the first sub-magnetic gap 2a1, and one end of the second voice coil 42 is inserted into the second sub-magnetic gap 2a2; portions of the first voice coil 32 and the second voice coil 42 in the first direction may be interposed on opposite sides of the second magnetic gap 2b, and portions of the first voice coil 32 and the second voice coil 42 in the first direction are disposed directly opposite to each other in the vibration direction of the first vibration system 3/the second vibration system 4. Therefore, the first voice coil 32 and the second voice coil 42 can vibrate independently without interference when vibrating, so that the first centering support plate assembly 33 can be arranged at four corners of the first voice coil 32, the second centering support plate assembly 43 can be arranged at four corners of the second voice coil 42, the first centering support plate assembly 33 and the second centering support plate assembly 43 can play a role in balancing vibration on the first voice coil 32 and the second voice coil 42, polarization phenomenon of the first voice coil 32 and the second voice coil 42 can be prevented, and the sounding effect of the sounding device 100 is improved.

In the specific example shown in fig. 2 to 5, the first centering tab assembly 33 may include a first sub-tab 33a and a second sub-tab 33b disposed opposite to each other, and each of the first sub-tab 33a and the second sub-tab 33b includes two first inner fixing pieces 331 and one first outer fixing piece 332 disposed at intervals, and each of the two first inner fixing pieces 331 is connected to the first outer fixing piece 332 through a first elastic deformation piece 333. The two first inner fixing pieces 331 on the first sub-supporting piece 33a are connected with two corners of the first voice coil 32, the first outer fixing pieces 332 on the first sub-supporting piece 33a are fixed at one end of the housing 1, the two first inner fixing pieces 331 on the second sub-supporting piece 33b are connected with the other two corners of the first voice coil 32, and the first outer fixing pieces 332 on the second sub-supporting piece 33b are fixed at the other end of the housing 1, thereby forming a centering structure at four corners of the first voice coil 32, and a good anti-polarization effect can be achieved on the first voice coil 32.

The second centering support assembly 43 may include a third sub-support 43a and a fourth sub-support 43b disposed opposite to each other, where the third sub-support 43a and the fourth sub-support 43b each include two first inner fixing members 331 and one first outer fixing member 332 disposed at intervals, and the two first inner fixing members 331 are connected to the first outer fixing member 332 through first elastic deformation members 333. The two first inner fixing pieces 331 on the third sub-supporting piece 43a are connected with two corners of the second voice coil 42, the first outer fixing pieces 332 on the third sub-supporting piece 43a are fixed at one end of the housing 1, the two first inner fixing pieces 331 on the fourth sub-supporting piece 43b are connected with the other two corners of the second voice coil 42, and the first outer fixing pieces 332 on the fourth sub-supporting piece 43b are fixed at the other end of the housing 1, thereby forming a centering structure at four corners of the second voice coil 42, and a good anti-polarization effect can be achieved on the second voice coil 42.

The structural design of the first centering support assembly 33 and the second centering support assembly 43 is not limited to this, and the effect of balancing the vibrations of the first voice coil 32 and the second voice coil 42 may be achieved. For example, the first centering support assembly 33 may further include four sub-support plates, one ends of which are respectively connected to four corners of the first voice coil 32, and the other ends of which are connected to the housing 1 through the avoiding space 2 c. The second centering support assembly 43 may also include four sub-support pieces, one ends of which are respectively connected with four corners of the second voice coil 42, and the other ends of which are connected with the housing 1 through the avoiding space 2 c.

An electronic apparatus according to an embodiment of the second utility model includes the sound generating device 100 according to the above-described embodiment of the utility model. Alternatively, the electronic device may be a mobile phone, PAD, notebook computer, or the like.

According to the electronic equipment provided by the embodiment of the utility model, through the arrangement of the sound generating device 100, the sound generating device 100 has compact structural design and high sound generating sensitivity, the sound quality of the electronic equipment can be effectively improved, and the miniaturized design requirement of the electronic equipment can be met.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplify the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two components. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A sound emitting device, comprising:

a housing having a first direction and a second direction perpendicular to each other;

the magnetic circuit system is fixed on the shell and comprises a magnetic yoke, a central magnetic part and a side magnetic part, wherein the central magnetic part and the side magnetic part are respectively arranged on two surfaces of the magnetic yoke which are oppositely arranged;

the first vibration system and the second vibration system are arranged on two opposite sides of the magnetic circuit system, the first vibration system comprises a first voice coil, and the second vibration system comprises a second voice coil;

the center magnetic part is arranged at intervals along the two ends of the first direction and the side magnetic part to form a first magnetic gap, the center magnetic part is arranged at intervals along the two ends of the second direction and the side magnetic part to form a second magnetic gap, the parts of the first voice coil and the second voice coil along the second direction are inserted at the opposite sides of the first magnetic gap and are arranged along the vibration direction of the first vibration system/the second vibration system in a staggered manner, and the parts of the first voice coil and the second voice coil along the first direction are inserted at the opposite sides of the second magnetic gap and are arranged along the vibration direction of the first vibration system/the second vibration system in a positive manner.

2. The sound generating apparatus according to claim 1, wherein the magnetically conductive yoke includes a first supporting portion, a connecting portion, and a second supporting portion, a mounting hole is provided at a center position of the first supporting portion, the second supporting portion faces the mounting hole and is located on a different plane from the first supporting portion, the connecting portion is provided at both ends of the second supporting portion in the first direction to connect the first supporting portion and the second supporting portion, the center magnetic portion is provided at a side of the second supporting portion close to the mounting hole, and the side magnetic portion is provided at a side of the first supporting portion close to the second supporting portion.

3. The sound generating apparatus according to claim 2, wherein a first sub-magnetic gap is formed between the side magnetic portion and the second supporting portion, a second sub-magnetic gap is formed between the center magnetic portion and the first supporting portion, the first sub-magnetic gap and the second sub-magnetic gap form the first magnetic gap, one end of the first voice coil is inserted into the first sub-magnetic gap, and one end of the second voice coil is inserted into the second sub-magnetic gap.

4. The sound generating apparatus according to claim 2, wherein the central magnetic portion includes a central magnet and a central washer, the central magnet being provided to the second support portion, the central washer being provided to a side of the central magnet remote from the second support portion;

the side magnet portion comprises a side magnet and Bian Huasi, wherein the side magnet is arranged on the first supporting portion, and Bian Huasi is arranged on one side, away from the first supporting portion, of the side magnet.

5. The sound generating apparatus according to claim 4, wherein the Bian Huasi is formed into a ring-shaped integrated structure, the Bian Huasi comprises a ring-shaped fixing bracket and a washer portion provided on the fixing bracket, the fixing bracket is connected to the housing, one end of the washer portion is connected to the fixing bracket, the other end of the washer portion extends toward a direction approaching the central magnetic portion, and the washer portion is provided on a side of the side magnet away from the first support portion.

6. The sound generating apparatus according to claim 2, wherein both ends of the second direction of the second supporting portion are disposed at intervals from the first supporting portion, and the first supporting portion, the second supporting portion and the connecting portion are formed as an integral piece.

7. The sound generating apparatus according to any of claims 1-6, wherein the first vibration system further comprises a first diaphragm assembly, the second vibration system further comprises a second diaphragm assembly, the first diaphragm assembly and the second diaphragm assembly are disposed on opposite sides of the magnetic circuit, one end of the first voice coil away from the central magnetic portion is connected to the first diaphragm assembly, and one end of the second voice coil away from the central magnetic portion is connected to the second diaphragm assembly.

8. The sound generating apparatus according to claim 7, wherein the first diaphragm assembly comprises a first diaphragm and a first dome, the first diaphragm comprises a first outer fixing portion, a first ring-folded portion and a first inner fixing portion, the first outer fixing portion is fixed to the housing, two ends of the first ring-folded portion are respectively connected with the first outer fixing portion and the first inner fixing portion, the first ring-folded portion is concavely arranged toward a direction close to the side magnetic portion, and the first inner fixing portion is connected with the first dome;

and/or, the second vibrating diaphragm assembly includes second vibrating diaphragm and second ball top, the second vibrating diaphragm includes second external fixation portion, second ring portion and second internal fixation portion, second external fixation portion is fixed in the casing, the both ends of second ring portion respectively with second external fixation portion with second internal fixation portion is connected, second ring portion towards being close to the sunken setting of direction of limit magnetic part, second internal fixation portion with second ball top is connected.

9. The sound generating apparatus according to claim 7, wherein the magnetic circuit system is formed in a square structure, four corners of the center magnetic portion and the side magnetic portions are arranged at intervals to form an avoidance space, and the sound generating apparatus further comprises:

the first centering support piece assembly is arranged on one side, far away from the first vibrating diaphragm assembly, of the first voice coil, and comprises a first inner fixing piece, a first outer fixing piece and a first elastic deformation piece, wherein the first inner fixing piece is arranged at the four corners of the first voice coil, the first outer fixing piece is fixed on the shell, and the first elastic deformation piece is arranged in the avoidance space to connect the first inner fixing piece and the first outer fixing piece;

the second centering piece subassembly, the second centering piece subassembly is located the second voice coil loudspeaker voice coil keep away from one side of second vibrating diaphragm subassembly, the second centering piece subassembly includes second internal fixation spare, second external fixation spare and second elastic deformation spare, the second internal fixation spare is located the four corners position of second voice coil loudspeaker voice coil, the second external fixation spare is fixed in the casing, the second elastic deformation spare is located in the dodging the space in order to connect second internal fixation spare with second external fixation spare.

10. An electronic device comprising the sound emitting apparatus according to any one of claims 1 to 9.