CN114688430B - Electronic equipment - Google Patents

Abstract

The present disclosure relates to an electronic device. An electronic device includes: the middle frame comprises a first frame body and a second frame body which is connected with the first frame body in a sliding manner along a first direction; the flexible display panel comprises a main body part and an extension part connected with the main body part, and the main body part and the first frame body are arranged in a stacked manner and move along with the first frame body; a drive assembly; the transmission mechanism comprises a first transmission part and a second transmission part, the first transmission part and the second transmission part are matched with the driving assembly, and the second transmission part is matched with the extension part so as to drive the extension part to extend out of the middle frame and the main body part to be horizontally paved along a first direction or drive the extension part to be accommodated in the middle frame; the first transmission part is connected to the first frame body and the second frame body so as to drive the first frame body and the second frame body to slide relatively along a first direction.

Description

Electronic equipment

Technical Field

The present disclosure relates to the field of terminal technology, and in particular to an electronic device.

Background technique

At present, in order to meet the increasing demand for display area of users and improve the convenience of electronic devices, various retractable screen terminals have emerged. For example, in the related art, foldable screen electronic devices are proposed, which are compatible with large display area and portability through folding and unfolding of electronic devices.

However, due to the frequent bending and unfolding of foldable electronic devices, creases will inevitably be formed on the display panel, affecting the display effect.

Summary of the invention

The present disclosure provides an electronic device to solve the deficiencies in the related art.

According to an embodiment of the present disclosure, there is provided an electronic device, including:

A middle frame, the middle frame comprising a first frame body and a second frame body slidably connected to the first frame body along a first direction;

A flexible display panel, the flexible display panel comprising a main body and an extension portion connected to the main body, the main body and the first frame are stacked and move with the first frame;

Drive components;

A transmission mechanism, the transmission mechanism includes a first transmission part and a second transmission part, the first transmission part and the second transmission part are matched with the driving assembly, the second transmission part cooperates with the extending part to drive the extending part to extend out of the middle frame and be laid flat with the main body along the first direction, or drive the extending part to be stored in the middle frame; the first transmission part is connected to the first frame body and the second frame body to drive the first frame body and the second frame body to slide relative to each other along the first direction.

Optionally, the driving assembly is connected to the first frame, and the first transmission part includes:

A rack connected to the first frame and to the driving assembly;

a first connecting rod assembly, the first connecting rod assembly comprising a spur gear end and a bevel gear end arranged opposite to the spur gear end, the spur gear end is meshed with the rack, the bevel gear end is rotatably connected to the second frame, and the first connecting rod assembly is used to drive the first frame and the second frame to slide relative to each other;

The second transmission part comprises:

a bevel gear meshing with the bevel gear end of the first connecting rod assembly;

The first rotating shaft is rotatably arranged relative to the second frame, the bevel gear is connected to the first rotating shaft, the first rotating shaft rotates with the bevel gear, and the extending portion extends out of the middle frame or is received in the middle frame as the first rotating shaft rotates.

Optionally, the second transmission unit further includes:

a first transmission gear connected to the first rotating shaft;

a second transmission gear, the second transmission gear meshing with the first transmission gear;

a second rotating shaft, the second rotating shaft being rotatably disposed on the second frame and being disposed parallel to the first rotating shaft, and the second rotating shaft being connected to the second transmission gear;

The extending portion extends out of the middle frame or is received in the middle frame in coordination with the rotation of the second rotating shaft and the first rotating shaft.

Optionally, the extension portion is connected to the second rotating shaft at an edge away from the main body portion, and the extension portion is wound around the second rotating shaft as the second rotating shaft rotates; or the extension portion is wound around the second rotating shaft and laid flat with the main body portion.

Optionally, the extension portion includes a gear tooth region;

The second transmission part further includes a third transmission gear, the third transmission gear is meshed with the gear tooth area, and the extending part extends out of the middle frame or is received in the middle frame as the third transmission gear rotates.

Optionally, the second frame includes:

An opening portion, wherein the extending portion is received into the middle frame or extends out of the middle frame from the opening;

The guide groove and the opening are arranged at two opposite ends of the third transmission gear in the thickness direction of the electronic device, and at least a part of the extension portion is located in the guide groove.

Optionally, the second frame further includes a matching portion surrounding the opening portion, and when the extending portion is received in the middle frame, the first frame abuts against the matching portion along the first direction;

The matching portion includes an avoidance groove to avoid the gear tooth area of the extension portion.

Optionally, the first connecting rod assembly includes a single connecting rod or a plurality of connecting rods rotatably connected in sequence, and the spur gear end and the bevel gear end are arranged at opposite ends of the first connecting rod assembly.

Optionally, the first transmission unit further includes:

a second connecting rod assembly, wherein one end of the second connecting rod assembly is in sliding contact with the rack and the other end opposite thereto is rotatably connected to the second frame;

When the first connecting rod assembly pushes the second frame body to slide relative to the first frame body, one end of the second connecting rod assembly slides along the rack, and the other end pushes the second frame body to slide relative to the first frame body.

Optionally, the driving assembly is connected to the first frame, and the first transmission part includes:

A threaded rod, wherein the driving assembly drives the threaded rod to rotate;

A push rod bracket, the push rod bracket comprising a first matching portion and a second matching portion, the first matching portion is in transmission matching with the threaded rod; the second matching portion is connected to the second frame body, and when the threaded rod rotates, the push rod bracket pushes the second frame body to slide relative to the first frame body;

The second transmission part includes a fourth transmission gear, a fifth transmission gear and a third rotating shaft. The fourth transmission gear is connected to the end of the threaded rod, the fifth transmission gear is meshed with the fourth transmission gear, the third rotating shaft is connected to the fifth transmission gear, the third rotating shaft rotates with the fourth transmission gear, and the extension part extends out of the middle frame or is received in the middle frame as the third rotating shaft rotates.

The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

It can be seen from the above embodiments that in the present disclosure, the extension and storage of the extension part and the relative sliding between the first frame and the second frame can be driven by the same driving component, thereby reducing the number of driving components in the electronic device and saving the internal space of the electronic device. At the same time, the timing control of multiple driving components can be avoided, the control instructions can be simplified, and program processing resources can be saved; and the extension part is used to realize the area transformation of the flexible display panel, which can avoid the occurrence of creases that affect the display effect.

It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

Fig. 1 is a structural block diagram of an electronic device according to an exemplary embodiment.

Fig. 2 is an exploded schematic diagram showing an electronic device according to an exemplary embodiment.

Fig. 3 is a front view showing an electronic device in a first state according to an exemplary embodiment.

FIG. 4 is a schematic cross-sectional view of the electronic device in FIG. 3 .

FIG. 5 is a partial exploded view of the electronic device in FIG. 3 .

FIG. 6 is a front view of the electronic device in FIG. 3 in a second state.

FIG. 7 is a schematic cross-sectional view of the electronic device in FIG. 6 .

FIG. 8 is a partial exploded view of the electronic device in FIG. 6 .

Fig. 9 is a schematic diagram showing the coordination between a driving assembly and a transmission mechanism in another electronic device according to an exemplary embodiment.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms "a", "the" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and/or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

FIG. 1 is a structural block diagram of an electronic device 100 according to an exemplary embodiment, and FIG. 2 is an exploded schematic diagram of an electronic device 100 according to an exemplary embodiment. As shown in FIG. 1 and FIG. 2, the electronic device 100 may include a middle frame 1, a flexible display panel 2, a driving component 3 and a transmission mechanism, and the middle frame 1 may include a first frame body 11 and a second frame body 12, and the first frame body 11 and the second frame body 12 may be slidably connected along a first direction, that is, in the direction indicated by the arrow A in FIG. 2, the first frame body 11 and the second frame body 12 slide relative to each other, so that when the first frame body 11 and the second frame body 12 slide relative to each other to approach each other, the overall area of the electronic device 100 becomes smaller, the display area is narrowed, and it is convenient to carry, and when the first frame body 11 and the second frame body 12 slide relative to each other to move away from each other, the area of the electronic device 100 increases, the display area is stretched, and the display area is increased. A slide groove arranged along the first direction may be formed on the first frame 11, and a guide rail arranged along the first direction may be formed on the second frame 12, and the first frame 11 and the second frame 12 may be slidably connected in the first direction through the cooperation between the guide rail and the slide groove. Of course, in other embodiments, the guide rail may be formed on the first frame 11, and the slide groove may be formed on the second frame 12, and the present disclosure is not limited thereto.

In order to adapt to the structural changes of the middle frame 1, the flexible display panel 2 may include a main body 21 and an extension portion 22 connected to the main body 21, the main body 21 is stacked with the first frame 11 and the main body 21 can move with the movement of the first frame 11. For example, the main body 21 may be directly stacked and connected to the first frame 11, or it may be connected to the first frame 11 through other intermediate structures, and the present disclosure does not limit this. The transmission mechanism may include a first transmission part 41 and a second transmission part 42, the first transmission part 41 and the second transmission part 42 are both matched to the drive assembly 3, and the first transmission part 41 and the second transmission part 42 are driven by the same drive assembly 3 to transmit motion, the first transmission part 41 can be directly or indirectly connected to the drive assembly 3, and the second transmission part 42 can be directly or indirectly connected to the drive assembly 3.

Further, the second transmission part 42 can also be matched to the extension part 22, so that after the power of the driving component 3 is transmitted to the extension part 22 through the second transmission part 42, the extension part 22 can be driven to extend out of the middle frame 1 to be laid flat with the main body 21 along the first direction, and the flexible display panel 2 can be switched to the unfolded state to adapt to the scene where the first frame 11 and the second frame 12 are far away from each other; or, after the power of the driving component 3 is transmitted to the extension part 22 through the second transmission part 42, the extension part 22 can be driven to be stored in the middle frame 1, and the flexible display panel 2 is switched to the storage state to adapt to the scene where the first frame 11 and the second frame 12 are close to each other. Among them, the power of the driving component 3 can be transmitted to the middle frame 1 through the first transmission part 41 to drive the first frame 11 and the second frame 12 to move closer to or away from each other. According to the present invention, the first transmission part 41 can be connected to the first frame 11 and the second frame 12, so that when the driving component 3 is working, the power is transmitted to the first frame 11 or the second frame 12 through the first transmission part 41, driving the first frame 11 and the second frame 12 to slide relative to each other along the first direction.

It can be seen from the above embodiments that in the present disclosure, the extension and storage of the extension portion 22 and the relative sliding between the first frame 11 and the second frame 12 can be driven by the same driving component 3, thereby reducing the number of driving components 3 in the electronic device 100 and saving the internal space of the electronic device 100. At the same time, the timing control of multiple driving components 3 can be avoided, the control instructions can be simplified, and program processing resources can be saved.

FIG. 3 is a front view of an electronic device 100 in a first state according to an exemplary embodiment, FIG. 4 is a schematic cross-sectional view of the electronic device 100 in FIG. 3 , and FIG. 5 is a partial exploded view of the electronic device 100 in FIG. 3 . FIG. 6 is a front view of the electronic device 100 in FIG. 3 in a second state, FIG. 7 is a schematic cross-sectional view of the electronic device 100 in FIG. 6 , and FIG. 8 is a partial exploded view of the electronic device 100 in FIG. 6 . As shown in FIGS. 3 to 8 , the drive assembly 3 may be connected to the first frame 11 , and the first transmission part 41 may include a rack 411 and a first connecting rod assembly 412 , the rack 411 is connected to the first frame 11 and connected to the drive assembly 3 , and the drive assembly 3 may directly drive the rack 411 to reciprocate, or drive the rack 411 to reciprocate through other intermediate transmission mechanisms, and the present disclosure does not limit this. The first connecting rod assembly 412 may include a spur gear end 4121 and a bevel gear end 4122, the spur gear end 4121 is meshed with the rack 411, and the bevel gear end 4122 is rotatably connected to the second frame 12. When the driving assembly 3 is working, the reciprocating movement of the rack 411 can drive the first connecting rod assembly 412 to move. Since the rack 411 is connected to the first frame 11 and the bevel gear end 4122 is connected to the second frame 12, the first connecting rod assembly 412 can be used to push the first frame 11 and the second frame 12 to slide relative to each other in the first direction, switching between the state shown in Figure 5 and the state shown in Figure 8.

Among them, as in the embodiment provided by the present disclosure, the first connecting rod assembly 412 may include two connecting rods that are rotatably connected to each other, and the spur gear end 4121 and the bevel gear end 4122 are connected to opposite ends of the first connecting rod assembly 412. In other embodiments, the first connecting rod assembly 412 may also include a single connecting rod or three or more connecting rods that are rotatably connected in sequence, and the spur gear end 4121 and the bevel gear end 4122 are connected to opposite ends of the first connecting rod assembly 412. The specific design can be as needed, and the present disclosure does not limit this.

Moreover, still taking the embodiment provided by the present disclosure as an example, in some other embodiments, the first transmission part 41 may further include one or more second connecting rod assemblies 413, one end of the second connecting rod assembly 413 may be in sliding contact with the rack 411, and the other end may be rotatably connected with the second frame 12, so that when the first connecting rod assembly 412 pushes the second frame 12 and the first frame 11 to slide relative to each other along the first direction, one end of the second connecting rod assembly 413 may slide along the rack 411, and the other end may push the second frame 12, thereby increasing the force acting on the second frame 12, improving the efficiency of the relative sliding of the first frame 11 and the second frame 12, sharing the load on the first connecting rod assembly 412, and being conducive to protecting the first connecting rod assembly 412. The second connecting rod assembly 413 may include a single or multiple connecting rods that are rotatably connected in sequence, and the number of connecting rods of the first connecting rod assembly 412 and the second connecting rod assembly 413 may be the same or different.

The second transmission part 42 may include a bevel gear 421, a first rotating shaft 422, a first transmission gear 423, a second transmission gear 424, and a second rotating shaft 425. The bevel gear 421 may be meshed with the bevel gear end 4122 of the first connecting rod assembly 412. The first rotating shaft 422 and the second rotating shaft 425 are both rotatably arranged relative to the second frame 12. The first rotating shaft 422 is arranged in parallel with the second rotating shaft 425. The first rotating shaft 422 is connected to the bevel gear 421 and the first transmission gear 423, respectively. The first transmission gear 423 is meshed with the second transmission gear 424, and the second transmission gear 424 is also connected to the second rotating shaft 425. In this way, the first rotating shaft 422, the first transmission gear 423, the second transmission gear 424, and the second rotating shaft 425 can be driven to rotate in sequence by the rotation of the bevel gear 421, and the second rotating shaft 425 can also be matched to the extension part 22, and the extension part 22 can be extended or stored in the middle frame 1 with the rotation of the second rotating shaft 425.

It can be understood that the power of the driving assembly 3 is transmitted to the second transmission part 42 through the first transmission part 41, and the first transmission part 41 can push the first frame 11 and the second frame 12 to slide relative to each other along the first direction. Since the first rotating shaft 422 and the second rotating shaft 425 are both arranged on the first frame 11, the first rotating shaft 422 and the second rotating shaft 425 will also be relatively far away from the second frame 12. Therefore, the length of the extension part 22 around the middle frame 1 needs to be greater than the movement distance between the first frame 11 and the second frame 12 to avoid the extension part 22 being over-stretched and damaged. Therefore, in the embodiment provided in the present disclosure, the relative movement speed between the first frame body 11 and the second frame body 12 and the speed at which the extending portion 22 moves out of the middle frame 1 can be adjusted by adjusting the transmission ratio between the bevel gear end 4122 of the first connecting rod assembly 412 and the bevel gear 421 of the second transmission portion 42, as well as the transmission ratio between the first transmission gear 423 and the second transmission gear 424, so that the speed at which the extending portion 22 moves out of the middle frame 1 or the speed at which the extending portion 22 moves into the middle frame 1 is greater than the relative movement speed between the first frame body 11 and the second frame body 12, thereby avoiding damage to the extending portion 22.

Among them, the extension portion 22 can be directly or indirectly matched with the second rotating shaft 425. In one case, the edge of the extension portion 22 away from the end of the main body 21 can be connected to the second rotating shaft 425, so that the extension portion 22 can be wound on the second reel as the second rotating shaft 425 rotates, or it can be wound around the second rotating shaft 425 and further extended to the outside of the middle frame 1, and arranged side by side with the main body 21 along the first direction. Alternatively, in other cases, such as in the embodiment provided by the present disclosure, the second transmission portion 42 can also include a third transmission gear 426 connected to the second rotating shaft 425, and the extension portion 22 can include a gear section 221, which can be engaged with the third transmission gear 426, so that when the second rotating shaft 425 drives the third transmission gear 426 to rotate, the gear section 221 can be driven to move by the third transmission, so that the electronic device 100 can switch between the states shown in Figures 4 and 7.

In some embodiments, the extension portion 22 may extend through the gap between the first frame body 11 and the second frame body 12 or be received in the middle frame 1. Alternatively, in the embodiments provided by the present disclosure, as shown in FIG. 4 and FIG. 7 , the second frame body 12 may include an opening portion 121, and the extension portion 22 may rotate relative to the third transmission gear 426, and then extend through the opening portion 121 to the outside of the middle frame 1 and be arranged side by side with the main body 21 along the first direction, or the extension portion 22 may also rotate relative to the third transmission gear 426 and be received in the middle frame 1 through the opening portion 121. Since the flexible display panel 2 is highly flexible and easily deformed, the second frame body 12 may further include a guide groove 122. In the thickness direction of the electronic device 100, that is, the height direction of the third transmission gear 426, the guide groove 122 is arranged opposite to the opening portion 121, and at least a portion of the extending portion 22 may be located in the guide groove 122. Therefore, when the extending portion 22 extends out of the middle frame 1 or is retracted into the middle frame 1, the end away from the main body 21 may be limited by the guide groove 122, and the first frame body 11 and the second frame body 12 slide relatively to each other, so that a force may be applied through the main body 21 to the end of the extending portion 22 away from the main body 21, thereby achieving the purpose of limiting.

Further, the second frame 12 may further include a matching portion 123 surrounding the opening, and when the extension portion 22 is received in the middle frame 1, the matching portion 123 abuts against the first frame 11 along the first direction, and when the extension portion 22 extends out of the middle frame 1, the matching portion 123 is away from the first frame 11. The matching portion 123 may include an avoidance groove (not shown), through which the gear tooth area 221 of the extension portion 22 can be avoided, so as to avoid the gear tooth area 221 from deforming and then being blocked from meshing with the third transmission gear 426.

Of course, when the extending portion 22 extends out of the middle frame 1, since there is a gap between the matching portion 123 and the first frame body 11, in order to support the extending portion 22 arranged corresponding to the gap, the electronic device 100 may also include a lifting support plate (not shown). When the first frame body 11 and the second frame body 12 slide relatively to the first set position and the extending portion 22 extends out of the middle frame 1, the lifting support plate can move toward the extending portion 22 under the driving action of other driving components 3 to support the extending portion 22 and prevent the extending portion 22 from being recessed or deformed; subsequently, the lifting support plate can be driven to move away from the extending portion 22 to the second set position under the action of other driving components 3, and then the first transmission part 41 and the second transmission part 42 are driven to move, and the first frame body 11 and the second frame body 12 approach each other until the first frame body 11 abuts against the matching portion 123, and the extending portion 22 is received in the middle frame 1 around the third transmission gear 426, or the extending portion 22 is wound around the second rotating shaft 425.

In the embodiment provided by the present disclosure, the extension part 22 can go out of the middle frame 1 or be stored in the middle frame 1 with the rotation of the first rotating shaft 422 and the second rotating shaft 425. Of course, in other embodiments, the second transmission part 42 may also include a bevel gear 421 and a first rotating shaft 422, and the extension part 22 may directly cooperate with the first rotating shaft 422, so that the extension part 22 can be driven to go out of the middle frame 1 or be stored in the middle frame 1 by the rotation of the first rotating shaft 422. Compared with the technical solution provided by the present disclosure, the structure of the second transmission part 42 can be simplified, and the internal space of the electronic device 100 can be saved; and the technical direction provided by the present disclosure is relative to the solution of the extension part 22 directly cooperating with the first rotating shaft 422, because the two-stage transmission can be achieved through the bevel gear end 4122 and the bevel gear 421 and the first transmission gear 423 and the second transmission gear 424, it can avoid the situation that too many teeth of the transmission member are required in the first-stage transmission, resulting in too large a transmission member, and too small a load that can be borne by too small a number of teeth.

In addition to the above embodiments, the present disclosure also provides an embodiment, as shown in FIG9 , the drive assembly 3 is connected to the first frame 11, the first transmission part 41 includes a threaded rod 414 and a push rod bracket 415, the push rod bracket 415 includes a first mounting part and a second mounting part, the first mounting part is in transmission cooperation with the threaded rod 414, and the second mounting part is connected to the second frame 12, so that when the drive assembly 3 drives the threaded rod 414 to rotate, the push rod bracket 415 can push the second frame 12 to slide relative to the first frame 11. The second transmission part 42 includes a fourth transmission gear 427, a fifth transmission gear (not shown) and a third rotating shaft (not shown), the fourth transmission gear 427 is connected to the end of the threaded rod 414, the fifth transmission gear is meshed with the fourth transmission gear 427, the third rotating shaft is connected to the fifth transmission gear, the third rotating shaft is connected to the fourth transmission gear 427 to rotate with the fourth transmission gear 427, and the extension part 22 can extend out of the middle frame 1 or be stored in the middle frame 1 with the rotation of the third rotating shaft.

Of course, as in the aforementioned embodiment, in order to satisfy the requirement that the length of the extending portion 22 wrapped around the middle frame 1 is greater than the movement distance between the first frame body 11 and the second frame body 12, so as to avoid the extending portion 22 being damaged by excessive stretching, the second transmission portion 42 can also include a fourth rotating shaft (not shown) arranged parallel to the third rotating shaft (not shown), and a fifth transmission gear (not shown) connected to the fourth rotating shaft (not shown) and meshing with the fourth transmission gear. For details, please refer to the aforementioned embodiment, which will not be described one by one here.

Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (8)

1. An electronic device, comprising:

the middle frame comprises a first frame body and a second frame body which is connected with the first frame body in a sliding manner along a first direction;

the flexible display panel comprises a main body part and an extension part connected with the main body part, and the main body part and the first frame body are arranged in a stacked mode and move along with the first frame body;

A drive assembly;

The transmission mechanism comprises a first transmission part and a second transmission part, the first transmission part and the second transmission part are matched with the driving assembly, and the second transmission part is matched with the stretching part so as to drive the stretching part to stretch out of the middle frame and the main body part to be horizontally arranged along the first direction or drive the stretching part to be contained in the middle frame; the first transmission part is connected to the first frame body and the second frame body so as to drive the first frame body and the second frame body to slide relatively along the first direction;

the drive assembly connect in first framework, first transmission portion includes:

the rack is connected to the first frame body and connected with the driving assembly;

the first connecting rod assembly comprises a spur gear end and a bevel gear end which is arranged opposite to the spur gear end, the spur gear end is meshed with the rack, the bevel gear end is rotationally connected with the second frame body, and the first connecting rod assembly is used for driving the first frame body and the second frame body to slide relatively;

the second transmission part includes:

The bevel gear is meshed with the bevel gear end of the first connecting rod assembly;

the first rotating shaft is rotatably arranged relative to the second frame body, the bevel gear is connected with the first rotating shaft, and the first rotating shaft rotates along with the bevel gear;

The second transmission part further includes:

The first transmission gear is connected with the first rotating shaft;

A second drive gear meshed with the first drive gear;

the second rotating shaft is rotatably arranged on the second frame body and is parallel to the first rotating shaft, and the second rotating shaft is connected with the second transmission gear;

The extension part is matched with the rotation of the second rotating shaft to extend out of the middle frame or be accommodated in the middle frame;

the edge of the extending part far away from the main body part is connected with the second rotating shaft.

2. The electronic device of claim 1, wherein the extension is wound around the second shaft as the second shaft rotates; or the second rotating shaft is wound out to be horizontally paved with the main body part.

3. The electronic device of claim 1, wherein the extension includes a gear tooth region;

The second transmission part also comprises a third transmission gear, the third transmission gear is meshed with the gear tooth area, and the extension part extends out of the middle frame or is contained in the middle frame along with the rotation of the third transmission gear.

4. The electronic device of claim 3, wherein the second housing comprises:

an opening portion from which the extension portion is received into the center or protrudes out of the center;

And the guide groove and the opening part are arranged at two opposite ends of the third transmission gear in the thickness direction of the electronic equipment, and at least one part of the extending part is positioned in the guide groove.

5. The electronic device of claim 4, wherein the second housing further comprises a mating portion surrounding the opening, the first housing abutting the mating portion in the first direction when the extension is received into the middle frame;

the mating portion includes a relief groove to relieve the gear tooth area of the extension portion.

6. The electronic device of claim 1, wherein the first link assembly comprises a single link or a plurality of links rotatably connected in sequence, the spur gear end and the bevel gear end being disposed at opposite ends of the first link assembly.

7. The electronic device of claim 1, wherein the first transmission portion further comprises:

the second connecting rod assembly is in sliding contact with the rack at one end and is rotationally connected with the second frame at the opposite end;

When the first connecting rod assembly pushes the second frame body to slide relative to the first frame body, one end of the second connecting rod assembly slides along the rack, and the other end of the second connecting rod assembly pushes the second frame body to slide relative to the first frame body.

8. The electronic device of claim 1, wherein the drive assembly is coupled to the first housing, and the first transmission portion comprises:

The driving assembly drives the threaded rod to rotate;

The push rod support comprises a first matching part and a second matching part, and the first matching part is in transmission fit with the threaded rod; the second matching part is connected with the second frame body, and when the threaded rod rotates, the push rod bracket pushes the second frame body to slide relative to the first frame body;

the second transmission part comprises a fourth transmission gear, a fifth transmission gear and a third rotating shaft, the fourth transmission gear is connected with the end part of the threaded rod, the fifth transmission gear is meshed with the fourth transmission gear, the third rotating shaft is connected with the fifth transmission gear, the third rotating shaft rotates along with the fourth transmission gear, and the stretching part stretches out of the middle frame or is contained in the middle frame along with the rotation of the third rotating shaft.