CN114635615B

CN114635615B - Automatic door closing mechanism and refrigerator including the same

Info

Publication number: CN114635615B
Application number: CN202210306522.9A
Authority: CN
Inventors: 黄成磊; 李琦; 杨常坤; 刘阳; 郭胜; 陈浩琳
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2025-06-24
Anticipated expiration: 2042-03-25
Also published as: CN114635615A

Abstract

The present invention provides an automatic door closing mechanism and a refrigerator including the same. The automatic door closing mechanism includes: a shell, the shell is used to connect with a cabinet, and a mounting cavity is formed in the shell; a connecting shaft is rotatably arranged in the mounting cavity, one end of the connecting shaft extends to the outside of the mounting cavity, and is used to be connected to the rotating shaft of the door body on the cabinet, and the rotating shaft is driven to rotate by the connecting shaft to control the closing of the door body; a reset mechanism includes an elastic member, the elastic member is transmission-connected with the connecting shaft, and the elastic member can drive the connecting shaft to rotate. The present invention can realize the automatic closing function of the refrigerator door through the automatic door closing mechanism, and because an adjustment structure is provided, the closing force of the door can be adjusted, thereby avoiding excessive or insufficient closing force of the door body.

Description

Automatic door closing mechanism and refrigerator comprising same

Technical Field

The invention relates to the technical field of refrigerators, in particular to an automatic door closing mechanism and a refrigerator comprising the same.

Background

Common wardrobe, cupboard, refrigerator etc. all have similar structure in the life, need open the door body when using and get put article, but the door body often can not realize automatic closing, need the manual closing of user, and it is inconvenient to use.

The mechanism of automatic door closing is arranged on part of the cabinet bodies in the current market, so that the function of automatic door closing can be realized, but the problems that the door closing force is not adjustable and the door is easy to fail after long-time use often exist, and a lot of troubles are brought to users.

Disclosure of Invention

In view of the above, the invention provides an automatic door closing mechanism and a refrigerator comprising the same, which are at least used for solving the technical problem of low reliability of automatic door closing of a door body on a cabinet structure in the prior art, and specifically:

In a first aspect, the present invention provides an automatic door closing mechanism comprising:

the shell is used for being connected with the cabinet body, and an installation cavity is formed in the shell;

The connecting shaft is rotatably arranged in the mounting cavity, one end of the connecting shaft extends out of the mounting cavity and is used for being connected with a rotating shaft of a door body on the cabinet body, and the rotating shaft is driven to rotate through the connecting shaft so as to control the door body to be closed;

the resetting mechanism comprises an elastic piece, the elastic piece is in transmission connection with the connecting shaft, the elastic piece can drive the connecting shaft to rotate,

The reset mechanism further comprises an adjusting structure, and the adjusting structure is used for adjusting the elastic force of the elastic piece.

Further optionally, the reset mechanism further includes:

The driving gear is arranged in the mounting cavity and fixedly connected with the connecting shaft, and the driving gear is used for driving the connecting shaft to rotate;

the rack is connected with the elastic piece, the elastic piece can drive the rack to move, and the rack can drive the driving gear to rotate.

Further alternatively, the adjustment structure includes an adjustment block, the adjustment block being adjustably positioned within the mounting cavity,

The elastic piece is a spring, the spring is arranged between the adjusting block and the rack, and the spring provides elastic force to push the rack to move.

Further alternatively, a sleeve is arranged in the mounting cavity, the spring is arranged in the sleeve,

The adjusting block is a bolt, an inner thread is arranged on the inner wall of the first end of the sleeve, and the bolt is connected to the first end of the sleeve through threads.

Further alternatively, the automatic door closing mechanism further comprises a locking structure,

When the door body is opened to a preset angle, the locking structure can lock the position of the rack to enable the door body to keep the opening angle.

Further alternatively, the locking structure comprises a locking rotating shaft, a first end of the locking rotating shaft is rotatably connected with the rack,

A locking slide block is formed on the side peripheral wall of the locking rotating shaft, a sliding groove is arranged on the inner peripheral wall of the sleeve, the locking slide block is slidably arranged in the sliding groove,

The sliding groove is provided with a locking position, and the locking rotating shaft is locked when the locking sliding block slides to the locking position.

Further optionally, the chute further includes:

the locking sliding block can slide back and forth in the sliding section, the locking position is arranged at the first end part of the sliding section, and the sliding section is communicated with the locking position;

a locking section in communication with the locking position, the locking position being formed at one end of the locking section;

and the first end of the resetting section is communicated with the locking section, and the second end of the resetting section is communicated with the second end of the sliding section, so that the sliding chute forms a closed annular groove.

Further alternatively, a limit seat is formed in the mounting cavity, the sleeve is arranged in the limit seat,

The inner peripheral wall of the mounting cavity is provided with a limiting block, the outer peripheral wall of the sleeve is provided with a limiting groove, and the limiting block is embedded into the limiting groove to limit the sleeve in the circumferential direction of the sleeve.

Further alternatively, the housing includes an upper shell and a bottom shell that fit therebetween to form the mounting cavity, wherein,

The limiting seat is formed in the upper shell and limits the two ends of the sleeve;

the limiting block is formed on the inner wall of the bottom shell and extends along the axial direction of the mounting cavity.

Further optionally, the automatic door closing mechanism further comprises an upper hinge, the upper hinge is used for being fixedly arranged on the cabinet body,

The upper hinge includes:

The fixing hole is used for being fixedly connected with the cabinet body;

The support groove corresponds to the position of the connecting shaft, and the connecting shaft is rotatably embedded into the support groove.

In a second aspect, the present invention provides a refrigerator, including the above automatic door closing mechanism, where the housing is fixedly disposed on a cabinet body of the refrigerator, and the connecting shaft is connected with a rotating shaft of the door body of the refrigerator.

The automatic door closing mechanism can realize the automatic closing function of the cabinet door, and the door closing force can be adjusted due to the arrangement of the adjusting structure, so that the excessive or insufficient door closing force is avoided.

Drawings

The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely examples of the present disclosure and other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic view showing the structure of an automatic door closing mechanism according to an embodiment of the present invention;

FIG. 2 is a schematic view showing an internal structure of an automatic door closing mechanism according to an embodiment of the present invention;

FIG. 3 is a schematic sectional view showing a part of the structure of an automatic door closing mechanism according to an embodiment of the present invention;

FIG. 4 is a schematic view showing the structure of a locking shaft according to an embodiment of the present invention;

FIG. 5 shows a schematic structural view of a sleeve according to an embodiment of the present invention;

FIG. 6 shows a schematic view of the interior deployment state of the sleeve of an embodiment of the present invention;

FIG. 7 shows a schematic structural view of an upper case according to an embodiment of the present invention;

Fig. 8 is a schematic view showing the structure of a bottom chassis according to an embodiment of the present invention;

FIG. 9 shows a schematic structural view of a hinge according to an embodiment of the present invention;

Fig. 10 illustrates a schematic top view (door closing) of a refrigerator according to an embodiment of the present invention;

Fig. 11 shows a schematic top view of a refrigerator according to an embodiment of the present invention (the door opening angle is a first preset angle a);

fig. 12 shows a schematic top view of a refrigerator according to an embodiment of the present invention (the door opening angle is a first preset angle B).

In the figure:

1. The door comprises a shell, 11, an upper shell, 111, a limiting seat, 112, an adjusting hole, 113, a through hole, 114, a limiting rib, 12, a bottom shell, 121, a limiting block, 122, a rack sliding groove, 123, a supporting hole, 13, an upper hinge, 131, a fixing hole, 132, a supporting groove, 2, a connecting shaft, 3, an adjusting block, 41, a driving gear, 5, a rack, 42, a transmission gear, 6, an elastic piece, 7, a sleeve, 71, an internal thread, 72, a sliding groove, 73, a limiting groove, 8, a locking rotating shaft, 81, a locking sliding block, 82, a connecting hole, 91, a cabinet body, 92 and a door body.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" generally includes at least two, but does not exclude the case of at least one.

It should be understood that the term "and/or" as used herein is merely an association relationship describing the associated object, and means that there may be three relationships, e.g., a and/or B, and that there may be three cases where a exists alone, while a and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or system. Without further limitation, an element defined by the phrase "comprising one of the elements" does not exclude the presence of additional identical elements in a commodity or system comprising the element.

The door body of the refrigerator can be automatically closed by the automatic door closing mechanism, and the door closing force can be adjusted due to the adjusting structure, so that the excessive or insufficient door body closing force is avoided. In addition, the invention also provides a locking structure, so that the opening position of the door body can be fixed at a specific angle, and a user can conveniently take and put food. The invention has simple structure, convenient installation and wide application range. The invention is described in detail below in connection with specific embodiments:

As shown in fig. 1 to 11, the present invention provides an automatic door closing mechanism, which can be used for controlling a refrigerator door to be automatically closed, preferably, can also be used for automatically closing other door bodies on structures such as a wardrobe, a cabinet, etc., and in this embodiment, the present invention is described by taking an application to a refrigerator as an example, and includes:

the refrigerator comprises a shell 1, wherein the shell 1 is used for being connected with a cabinet 91 of the refrigerator, and an installation cavity is formed in the shell 1;

The connecting shaft 2 is rotatably arranged in the mounting cavity, one end of the connecting shaft 2 extends out of the mounting cavity and is used for being connected with a rotating shaft of the door body 92 of the refrigerator, and the rotating shaft is driven to rotate through the connecting shaft 2 so as to control the door body 92 to be closed;

the reset mechanism comprises an elastic piece 6, the elastic piece 6 is in transmission connection with the connecting shaft 2, the elastic piece 6 can drive the connecting shaft 2 to rotate, the reset mechanism further comprises an adjusting structure, and the adjusting structure is used for adjusting the elastic force of the elastic piece 6.

As shown in fig. 1,2 and 3, the reset mechanism specifically further includes a driving gear 41 disposed in the mounting cavity, the driving gear 41 is fixedly connected with the connecting shaft 2, the driving gear 41 is used for driving the connecting shaft 2 to rotate, preferably, the driving gear 41 may be integrally formed with the connecting shaft 2, a rack 5 is connected with the elastic member 6, the elastic member 6 may drive the rack 5 to move, and the rack 5 may drive the driving gear 41 to rotate.

Preferably, in the present embodiment, the return mechanism includes the transmission gear 42, two transmission gears 42 are provided, the transmission gear 42 is provided between the rack 5 and the drive gear 41, and torque is transmitted through the transmission gear 42. Preferably, the transmission gear 42 has the same number of teeth as the driving gear 41, and only functions to transmit torque, or the transmission gear 42 may have a different number of teeth from the driving gear 41.

The adjusting structure comprises an adjusting block 3, the position of the adjusting block 3 is adjustably arranged in the mounting cavity, an elastic piece 6 is a spring, the spring is arranged between the adjusting block 3 and the rack 5, the compression amount of the spring can be changed by adjusting the position of the adjusting block 3, so that the elastic force provided by the adjusting block is changed, and the spring provides the elastic force to push the rack 5 to move.

As shown in fig. 5, a sleeve 7 is arranged in the mounting cavity, a spring is arranged in the sleeve 7, the adjusting block 3 is a bolt, an inner thread 71 is arranged on the inner wall of the first end of the sleeve 7, the bolt is connected to the first end of the sleeve 7 through threads, and the position of the bolt can be changed by rotating the bolt.

The automatic door closing mechanism further comprises a locking structure, and when the door body 92 is opened to a preset angle, the locking structure can lock the position of the rack 5 so that the door body 92 can keep the opening angle. In the present embodiment, as shown in fig. 4, the locking structure includes a locking rotary shaft 8, a first end of the locking rotary shaft 8 is rotatably connected with a rack 5, preferably, the first end of the locking rotary shaft 8 is formed with a connecting hole 82, an end of the rack 5 is formed with a connecting ball, the connecting ball is connected with the connecting hole 82 through the connecting ball, the locking rotary shaft 8 and the locking rotary shaft 8 cannot move relatively in an axial direction thereof, and the locking rotary shaft 8 can rotate with an axis thereof as an axis.

As shown in fig. 4 and 5, a lock slide 81 is formed on the side wall of the lock shaft 8, a slide groove 72 is provided on the inner wall of the sleeve 7, the lock slide 81 is slidably provided in the slide groove 72, the slide groove 72 has a lock position, and the lock shaft 8 is locked when the lock slide 81 slides to the lock position. Preferably, the sliding chute 72 further comprises a sliding section, a locking sliding block 81 capable of sliding reciprocally in the sliding section, a locking position arranged at a first end of the sliding section and communicated with the locking position, a locking section communicated with the locking position and formed at one end of the locking section, and a resetting section, wherein the first end of the resetting section is communicated with the locking section, and the second end of the resetting section is communicated with the second end of the sliding section, so that the sliding chute 72 forms a closed annular groove.

As shown in fig. 6, the expanded state of the chute 72 includes a plurality of sections, wherein the C-D section is a sliding section, the D-E section is a locking section, wherein D is a locking position, and E-C is a reset section. Preferably, in order to realize the locking function, a limit groove is formed at the locking position, a guide part F is formed at the joint of the locking position and the locking section, the guide part F is preferably a round angle guide groove, and the locking sliding block 81 can slide into the locking section through the guide part F.

Specifically, as shown in FIGS. 11 and 12,

When a user does not need to open the refrigerator door 92 for a long time to take an article, the opening angle of the refrigerator door 92 is smaller than the first preset angle A, the door 92 rotates to drive the rotating shaft to rotate, so that the driving gear 41 and the driven gear 42 rotate and drive the rack 5 to move, the rack 5 drives the locking rotating shaft 8 to rotate and advance in the sleeve 7, the locking sliding block 81 on the locking rotating shaft 8 does not reach the position D shown in fig. 6 because the opening angle is smaller than the first preset angle A, the locking sliding block 81 slides (sliding section) between C and D, the user finishes the action of taking the article, and at the moment, the rack 5 moves reversely under the influence of spring elasticity, so that the rack 5 drives the gear to drive the rotating shaft to close the door 92, and automatic door closing is realized.

When a user takes a long time to take an article from the refrigerator, the door 92 may be opened to a position where the first preset angle a is smaller than the second preset angle B, which is larger than the first preset angle a. At this time, the door body 92 rotates to drive the rotating shaft to rotate, so as to drive the driving gear 41 and the transmission gear 42 to drive the rack 5 to move, the rack 5 drives the locking rotating shaft 8 to rotate in the sleeve 7 to advance the compression spring, when the door opening angle is larger than the first preset angle A and smaller than the second preset angle B, the locking sliding block 81 on the locking rotating shaft 8 reaches the D-E position (locking section) shown in fig. 6 and finally falls into the locking position of the D position, thereby realizing the locking of the door body 92 at an angle, and at this time, a user can freely take articles and the refrigerator door body 92 is not automatically closed. When the user finishes taking the article, the user only needs to push the door 92 to rotate to the second preset angle B in the opening direction, at this time, the rack 5 drives the locking rotating shaft 8 to rotate and advance in the sleeve 7, the locking sliding block 81 on the locking rotating shaft 8 enters the locking section and reaches the E position under the guiding action of the guiding part F, then enters the E-C section (resetting section), finally falls back to the C position under the action of spring force, and realizes the automatic closing of the door 92.

The installation intracavity is formed with spacing seat, and sleeve 7 sets up in spacing seat, is provided with the stopper on the interior perisporium of spacing seat, is formed with spacing groove 73 on the periphery wall of sleeve 7, and the stopper embedding is in spacing groove 73 and carries out spacingly to sleeve 7 in the circumference of sleeve 7. Preferably, the shell 1 comprises an upper shell 11 and a bottom shell 12, as shown in fig. 7, the upper shell 11 and the bottom shell 12 are butted to form the shell 1, the upper shell 11 and the bottom shell 12 are assembled to form an installation cavity, a limiting seat 111 is formed in the upper shell 11, the limiting seat 111 limits two ends of the sleeve 7, preferably, an adjusting hole 112 is formed at a first end of the upper shell 11, and a bolt can extend out through the adjusting hole 112 to facilitate adjustment of a user. The upper case 11 is formed at a second end thereof with a through hole 113, and the rack 5 can be partially protruded through the through hole 113 when moving. Further, a rack limiting rib 114 is further arranged in the upper shell 11 to guide and limit the movement of the rack 5.

As shown in fig. 8, a stopper 121 is formed on the inner wall of the bottom case 12, the stopper 121 extends along the axial direction of the installation cavity for performing a stopper fit with the stopper groove 73 on the sleeve 7, and stopping the sleeve 7 in the circumferential direction. Preferably, the bottom case 12 has a plate-shaped structure, and the bottom case 12 is provided with a support hole 123 for gear installation, and a rack runner 122 for limiting and guiding the sliding of the rack 5.

As shown in fig. 9, the automatic door closing mechanism further includes an upper hinge 13, where the upper hinge 13 is fixedly disposed on the cabinet 91 and located at a lower side of the bottom shell 12, and the upper hinge 13 includes a fixing hole 131 for fixedly connecting with the cabinet 91, and the upper hinge 13 further includes a support groove 132, where the support groove 132 corresponds to a position of the connection shaft 2, and the connection shaft 2 is rotatably embedded in the support groove 132, and supports the connection shaft 2 through the support groove 132.

The invention also provides a refrigerator, as shown in fig. 10 and 11, comprising the automatic door closing mechanism, wherein the shell 1 is fixedly arranged on a refrigerator body 91 of the refrigerator, and the connecting shaft 2 is connected with a rotating shaft of a refrigerator door body 92.

Because the situation that the elasticity is insufficient after the user uses the device for a long time and the automatic door closing function fails or the situation that the elasticity is overlarge when the manufacturer leaves the factory is considered, the elastic force adjusting bolt is added in the device, and when the elasticity is insufficient, the user only needs to properly screw the bolt, so that the elasticity can be adjusted to a proper size, and vice versa.

Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the disclosure is not to be limited to the details of construction, arrangement or method of implementation described herein, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. An automatic door closing mechanism for controlling the door body automatic closing of a cabinet body, which is characterized by comprising:

the shell is used for being connected with the cabinet body, an installation cavity is formed in the shell, and a sleeve is arranged in the installation cavity;

The reset mechanism comprises an elastic piece, an adjusting structure and a rack, wherein the rack is connected with the elastic piece, the elastic piece is in transmission connection with the connecting shaft, the elastic piece can drive the connecting shaft to rotate, and the adjusting structure is used for adjusting the elastic force of the elastic piece;

The automatic door closing mechanism further includes:

The locking structure can lock the position of the rack to enable the door body to keep an opening angle when the door body is opened to a preset angle;

The locking structure comprises a locking rotating shaft, wherein the first end of the locking rotating shaft is rotatably connected with the rack, a locking sliding block is formed on the side peripheral wall of the locking rotating shaft, a sliding groove is formed on the inner peripheral wall of the sleeve, and the locking sliding block is slidably arranged in the sliding groove;

The chute further comprises:

The first end of the reset section is communicated with the locking section, and the second end of the reset section is communicated with the second end of the sliding section, so that the sliding chute forms a closed annular groove;

And a guide part is formed at the joint of the locking position and the locking section, and the guide part is a round angle guide groove.

2. The automatic door closing mechanism of claim 1, wherein the reset mechanism further comprises:

The elastic piece can drive the rack to move, and the rack can drive the driving gear to rotate.

3. The automatic door closing mechanism of claim 2, wherein the adjustment structure comprises an adjustment block, the adjustment block being adjustably positioned within the mounting cavity,

4. An automatic door closing mechanism according to claim 3, wherein said spring is disposed within said sleeve,

5. The automatic door closing mechanism according to claim 4, wherein a limit seat is formed in the installation cavity, the sleeve is arranged in the limit seat,

6. The automatic door closing mechanism as recited in claim 5, wherein the housing includes an upper shell and a bottom shell that fit therebetween to form the mounting cavity, wherein,

7. The door closing mechanism as recited in any one of claims 1-6, further comprising an upper hinge for fixedly disposed on the cabinet,

The upper hinge includes:

The fixing hole is used for being fixedly connected with the cabinet body;

8. A refrigerator, characterized by comprising the automatic door closing mechanism according to any one of claims 1 to 7, wherein the shell is fixedly arranged on a cabinet body of the refrigerator, and the connecting shaft is connected with a rotating shaft of the refrigerator door body.