CN214371241U

CN214371241U - Slipping mechanism and refrigerator

Info

Publication number: CN214371241U
Application number: CN202120433590.2U
Authority: CN
Inventors: 李明
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-10-08
Anticipated expiration: 2031-02-26

Abstract

The present disclosure relates to a slipping mechanism and a refrigerator, the slipping mechanism comprises a driving gear and a driven gear which are coaxially arranged, wherein a first torque for driving the driving gear to rotate is larger than a second torque output by the driven gear; the slipping mechanism also comprises a driving component which is respectively connected with the driving gear and the driven gear; when the driving gear is driven by a driving force, the driving gear rotates, so that the driving gear transmits a first torque to the driven gear through the driving assembly, and the driven gear is driven to synchronously rotate; when the driven gear is subjected to the driving force, the driven gear rotates, so that the driven gear transmits a second torque to the driving gear through the driving assembly, and the driving gear is static. This openly adopts drive assembly transmission torque, has realized the effect of mechanical transmission, has solved the problem that leads to the unable normal use of mechanism that skids because of the outage in the refrigerator, has prolonged the life of refrigerator.

Description

Slipping mechanism and refrigerator

Technical Field

The disclosure relates to the technical field of electrical elements, in particular to a slipping mechanism and a refrigerator.

Background

With the improvement of living standard of people, automatic electric equipment is gradually favored by people. Among them, the electronic device is, for example, a refrigerator. In order to improve the use experience of users, the refrigerator gradually tends to be intelligent, for example, the refrigerator is additionally provided with an automatic door opening function. When the door body of the refrigerator is inconvenient to open by both hands of a user, the user controls the door body of the refrigerator to open or close by adopting a voice recognition mode, for example. Or, the user can also adopt a motion or touch recognition mode to realize controlling the door body of the refrigerator, so as to improve the use experience of the user.

However, when the door body is opened and closed automatically, if the door body is suddenly powered off or is subjected to external impact, the driving mechanism in the automatic opening and closing system is easily damaged, the working performance of the driving mechanism of the door body is affected, the service life of the refrigerator is reduced, and the use experience of a user is affected.

SUMMERY OF THE UTILITY MODEL

To overcome the problems in the related art, the present disclosure provides a slipping mechanism and a refrigerator.

According to a first aspect of the embodiments of the present disclosure, there is provided a slipping mechanism including a driving gear and a driven gear which are coaxially arranged, wherein a first torque for driving the driving gear to rotate is larger than a second torque output by the driven gear;

the slipping mechanism further comprises a driving assembly connected with the driving gear and the driven gear respectively;

when the driving gear is subjected to driving force, the driving gear rotates, so that the driving gear transmits first torque to the driven gear through the driving assembly, and the driven gear is driven to rotate;

when the driven gear receives the driving force, the driven gear rotates, so that the driven gear transmits the second torque to the driving gear through the driving assembly, and the driving gear is static.

Optionally, the driving assembly includes an elastic member and a rotating wheel, the rotating wheel is coaxially disposed and fixedly connected with the driven gear, and the elastic member is fixedly connected with the driving gear; in an assembly state, the elastic part is connected with the rotating wheel in a clamping manner;

when the driven gear transmits the second torque to the driving gear through the driving assembly, the driven gear drives the rotating wheel to move synchronously, and the rotating wheel is separated from the elastic piece in a sliding mode, so that the elastic piece is static.

Optionally, the elastic member includes at least one elastic sheet, at least one notch is formed on the rotating wheel, a clamping portion is formed on the elastic sheet, and the clamping portion is clamped in the notch.

Optionally, the elastic member includes a plurality of elastic pieces, the plurality of elastic pieces are arranged on the inner circumferential wall of the driving gear along the circumferential direction, a plurality of notches are formed on the rotating wheel, and the plurality of notches are arranged on the circumferential outer side wall of the rotating wheel;

each elastic sheet comprises a clamping portion, and the clamping portions are assembled with the notches correspondingly.

Optionally, the elastic piece further comprises a body, wherein a protrusion is formed by bending the middle part of the body outwards, and the protrusion forms the clamping portion.

Optionally, an accommodating space is formed inside the driving gear, the elastic piece is clamped on the inner side wall of the accommodating space, and the rotating wheel is connected with the inner bottom wall of the accommodating space.

Optionally, the driving gear includes a mounting portion disposed corresponding to the two free ends of the body, and the free ends of the body are fixedly connected to the mounting portion; wherein, the installation part is arranged on the inner side wall of the accommodating space.

Optionally, the mounting portion includes a mounting groove formed in an inner side wall of the accommodating space, and the free end of the body is inserted into the mounting groove.

Optionally, the mounting portion further includes a mounting body formed on an inner sidewall of the accommodating space, and the mounting groove is formed in the mounting body.

According to a second aspect of the embodiments of the present disclosure, there is provided a refrigerator, the refrigerator including a door body, a cabinet body, and a door opening device for automatically opening and closing the door body, the door opening device including: a drive mechanism and a transmission gear set, and a slip mechanism as described above;

the driving mechanism comprises a motor and a worm sleeved on a driving shaft of the motor; the worm is meshed with a driving gear of the slipping mechanism, and the driving gear is meshed with the transmission gear set;

under the working state, the driving shaft of the motor drives the worm to rotate, the worm drives the slipping mechanism to move, and the slipping mechanism drives the transmission gear set to move.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: this openly adopts drive assembly transmission torque, has realized the effect of mechanical transmission, has solved in the refrigerator, leads to the unable normal use of mechanism because of the outage problem, has prolonged the life of refrigerator.

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

Drawings

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

Fig. 1 is a schematic view of a face of a slip mechanism according to an exemplary embodiment.

Fig. 2 is an exploded view of a skid mechanism according to an exemplary embodiment.

FIG. 3 is a schematic diagram of a driven gear shown according to an exemplary embodiment.

FIG. 4 is a schematic view of a drive gear shown in accordance with an exemplary embodiment.

FIG. 5 is a schematic view of a drive gear shown in accordance with an exemplary embodiment.

FIG. 6 is a schematic view of a spring shown according to an exemplary embodiment.

Fig. 7 is a partial schematic view of a refrigerator shown according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like 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 invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

In the related art, when a barrier blocks the movement of a door body in the automatic door opening process of a refrigerator, the overload condition of a driving mechanism can occur, and the service life of the driving mechanism is influenced. At present, some manufacturers adopt a slipping mechanism to improve the safety factor in the automatic door opening process. However, the slipping mechanism mainly adopts an electromagnetic clutch structure, and when the refrigerator is powered off, the electromagnetic clutch structure can lose effectiveness. The user needs the manual door body that opens and shuts, and drive power reverses, to actuating mechanism, is extra impact force, still can take place the condition that actuating mechanism damaged, influences the life of refrigerator, reduces user's use and experiences.

The present disclosure provides a slipping mechanism connected with a driving mechanism. The slipping mechanism comprises a driving gear and a driven gear which are coaxially arranged. Wherein, the first torque for driving the driving gear is larger than the second torque output by the driven gear.

The slipping mechanism also comprises a driving component which is respectively connected with the driving gear and the driven gear;

when the driving gear receives driving force, the driving gear rotates, so that the driving gear transmits first torque to the driven gear through the driving assembly, and then the driven gear is driven to synchronously move.

When the driven gear receives the driving force, the driven gear rotates, so that the driven gear transmits a second torque to the driving gear through the driving assembly, and the driving gear is static to protect the driving mechanism.

This openly adopts drive assembly transmission torque, realizes the effect of mechanical transmission, has solved the problem that the unable normal use of mechanism that skids because of the outage leads to in the refrigerator.

In an exemplary embodiment, as shown in fig. 1 and 7, a slipping mechanism includes a driving gear 1 and a driven gear 2 which are coaxially arranged, the driving gear 1 is connected with a driving mechanism 4, for example, so that the driving force of the driving mechanism 4 can be transmitted to the driving gear, and the driving gear 1 drives the driven gear 2 to operate.

Wherein, the first torque for driving drive gear 1 pivoted is greater than the second torque of driven gear 2 output, guarantees that drive gear 1 can drive driven gear 2 and move.

In the present embodiment, as still referring to fig. 1, the slip mechanism further includes a drive assembly 3 connected to the drive gear 1 and the driven gear 2, respectively.

In one example, when the driving gear 1 receives a driving force, that is, when a torque is transmitted in a forward direction, the driving gear 1 rotates, so that the driving gear 1 transmits a first torque to the driven gear 2 through the driving assembly 3, and the driven gear 2 is driven to rotate synchronously. When the slipping mechanism is applied to the automatic door opening device of the door body 6 of the refrigerator, the driving mechanism 4 drives the driving gear 1 of the slipping mechanism, and the driving gear 1 can drive the driven gear 2 to synchronously rotate to realize the transmission of the torque because the first torque is greater than the torque transmitted by the driving component 3 and the driving component 3 is greater than the second torque.

In another example, when the driven gear receives the driving force, that is, the torque is not output by the driving mechanism 4 but output from the side of the driven gear 2 away from the driving mechanism 4, so as to form the reverse transmission of the torque, the driven gear 2 rotates, so that the driven gear 2 transmits the second torque to the driving gear 1 through the driving assembly 3, and the driving gear 1 is stationary. When the slipping mechanism is applied to the automatic door opening device of the door body 6 of the refrigerator, the refrigerator is in a power-off state, and external force of a user acts on the door body 6 to enable the door body 6 to execute opening and closing instructions. During the reverse transmission of the torque, the driven gear 2 rotates and outputs a second torque, and the second torque is transmitted to the driving gear 1 through the driving assembly 3. Since the second torque is less than the torque transmitted by the drive assembly 3, the torque transmitted by the drive assembly 3 is less than the first torque. Therefore, the driven gear 2 cannot drive the driving gear 1 to synchronously rotate, so that a slip phenomenon occurs between the driven gear 2 and the driving gear 1, the driven gear 2 idles, and the driving gear 1 is at a standstill. The torque of reverse transmission is interrupted at drive gear 1, can't transmit to actuating mechanism 4, has further promoted actuating mechanism 4's security, guarantees the normal operating of the automatic system that opens and shuts of the door body 6 of refrigerator, prolongs the life of refrigerator, promotes user's use and experiences.

In an exemplary embodiment, as shown in fig. 2, 4 and 6, the driving assembly 3 includes an elastic member 31 and a rotating wheel 32, the rotating wheel 32 is coaxially disposed and fixedly connected with the driven gear 2, and the elastic member 31 is fixedly connected with the driving gear 1.

In one example, the driven gear 2 may be integrally formed with the runner 32, for example, and one end surface of the runner 32 is fixedly connected to one end surface of the driven gear 2.

In another example, the driven gear 2 may further include, for example, a second torque driving body 21, and a cylindrical protrusion 22 fixedly connected to the second torque driving body 21. One end face of the cylindrical protrusion 22 is fixedly connected with one end face of the second torque driving body 21, and the outer diameter of the cylindrical protrusion 22 is smaller than that of the second torque driving body 21, so that the cylindrical protrusion 22 is ensured not to interfere with the second torque driving body 21. The runner 32 is formed with a second mounting through hole 321 in the axial direction, and the runner 32 is fitted to the cylindrical boss 22 through the second mounting through hole 321, so that the inner circumferential wall of the second mounting through hole 321 and the outer circumferential wall of the cylindrical boss 22 can be fixedly connected.

Wherein, driven gear 2 still includes the pivot (not shown in the figure), and along axial direction, driven gear 2 is formed with shaft hole 23, and driven gear 2 passes through shaft hole 23 and installs in the pivot, and driven gear 2 passes through the pivot and installs in the door body 6 of refrigerator.

In the present embodiment, as shown in fig. 2 and 4 to 6, in the assembled state, the elastic member 31 attached to the driving gear 1 is engaged with the pulley 32 attached to the driven gear 2. When the driven gear 2 transmits the second torque to the driving gear 1 through the driving assembly 3, the driven gear 2 drives the rotating wheel 32 to move synchronously, and the rotating wheel 32 is separated from the elastic member 31 in a slipping manner, so that the elastic member 31 is stationary.

The elastic member 31 is made of, for example, a steel material, so that the overall force-bearing performance of the elastic member 31 is ensured, and the problem of breakage and the like, which affect the transmission of the torque between the driving gear 1 and the driven gear 2, is avoided.

In one example, as shown in fig. 2, 4 and 6, the elastic member 31 includes at least one elastic sheet, the rotating wheel 32 is formed with at least one notch 322, the elastic sheet is formed with a clamping portion 311, and the clamping portion 311 is clamped in the notch 322. When the driving gear 1 transmits torque to the driven gear 2 through the elastic member 31, the engaging portion 311 engages with the notch 322 to drive the rotating wheel 32 to move, and further drive the driven gear 2 to move. When the driven gear 2 transmits the second torque to the driving gear 1 through the runner 32, the clamping portion 311 slips and disengages from the notch 322 of the runner 32, so that the driven gear 2 idles.

In another example, as shown in fig. 2 and 6, the elastic member 31 includes a plurality of elastic pieces, the plurality of elastic pieces are disposed on the inner circumferential wall of the driving gear 1 along the circumferential direction, a plurality of notches 322 are formed on the runner 32, and the plurality of notches 322 are disposed on the circumferential outer side wall of the runner 32. Wherein, the elastic piece includes joint portion 311, and joint portion 311 corresponds the assembly with breach 322 to promote the assembly effect of elastic component 31 and runner 32. In this example, the effect of the connection between the elastic member 31 and the runner 32 is the same as that of the above example, and the description thereof is not repeated.

In this embodiment, referring to fig. 6, the elastic sheet 31 further includes a body 312, and a protrusion is formed by bending the middle portion of the body 312 outwards, and the protrusion forms a clamping portion 311. In the assembled state, the direction in which the surface of the middle portion of the body 312 extends toward the runner 32 is the direction in which the middle portion of the body 312 bends outward.

In one example, the clamping portion 311 is, for example, V-shaped, so that two symmetrical bending bodies are formed, one ends of the two bending bodies are connected, and the other ends of the two bending bodies have a certain distance, so that a movable space is formed between the two bending bodies. In the assembling process, the two bending bodies can be extruded to reduce the distance between the bending bodies and ensure that the elastic piece 31 can be smoothly installed to the driving gear 1.

Here, it should be noted that the structure of the snap-in portion 311 is not limited to the shape, and the V shape is only used to explain the embodiment, and does not limit the present application.

In an exemplary embodiment, as shown in fig. 2-6, a receiving space 11 is formed inside the driving gear 1, the elastic member 31 is engaged with an inner sidewall of the receiving space 11, and the rotating wheel 32 is connected with an inner bottom wall of the receiving space 11.

Wherein, a first installation through hole 111 communicated with the accommodating space 11 is formed at the middle part of the driving gear 1. During installation, the driven gear 2 is located on the upstream side of the rotating shaft and the driving gear 1 is located on the downstream side of the rotating shaft along the axial extension direction of the rotating shaft, so that the driven gear 2 is located on the upstream side of the driving gear 1. The cylindrical protrusions 22 of the driven gear 2 protrude from the second mounting through-holes 321 of the runner 32 into the first mounting through-holes 111 of the driving gear 1, so that the driving gear 1 and the driven gear 2 are coupled with each other. The driving gear 1 is restricted relative to the driven gear 2, so that dislocation is avoided, and the driving gear 1 and the driven gear 2 can move around the rotating shaft all the time in the circumferential direction. In the assembled state, the rotating wheel 32 is positioned between the driving gear 1 and the driven gear 2, and the normal transmission of the torque is ensured.

Here, the directions indicated on the upstream side, the downstream side, and the like are based on the directions shown in the drawings, and are used only for explaining the present embodiment, and do not indicate specific directions. Has an upstream side and a downstream side, based on the orientation after actual installation.

In one example, as shown in fig. 5 and 6, two free ends of the elastic member 31 are directly fixed to the inner sidewall of the accommodating space 11. The elastic member 31 is welded to the accommodating space 11, so that the number of processes is reduced, and the connection effect between the elastic member 31 and the driving gear 1 is improved.

In another example, the drive gear 1 includes a mounting portion 12 corresponding to both free ends of the body 312, and the free ends of the body 312 are fixedly connected to the mounting portion 12. The mounting portion 12 is disposed on an inner sidewall of the accommodating space 11. The mounting portion 12 includes, for example, a mounting groove 121 disposed on an inner side wall of the accommodating space 11, and a free end of the body 312 is inserted into the mounting groove 121 to form a detachable connection between the elastic member 31 and the driving gear 1, so as to facilitate replacement of the elastic member 31. When the elastic part 31 is seriously abraded, the operation is simple and convenient, and the time is saved.

In another example, as shown in fig. 4 and 6, the driving gear 1 includes mounting portions 12 corresponding to two free ends of the body 312, the mounting portions 12 include mounting bodies 122 formed on inner sidewalls of the accommodating space 11, mounting grooves 121 are formed on the mounting bodies 122, and the free ends of the body 312 are inserted into the mounting grooves 121. The installation body 122 protrudes from the inner side wall of the accommodating space 11, so as to provide a suitable installation angle for the elastic member 31, and effectively improve the clamping effect of the clamping portion 311 of the elastic member 31 and the notch 312 of the rotating wheel 32.

Of course, it is understood that the free end of the body 312 can be directly welded to the outer sidewall of the mounting body 122, and the above example is only used for explaining the present embodiment and does not limit the present application. The free end of the body 312 is mounted in a specific manner based on the actual design.

The present disclosure also provides a refrigerator, the refrigerator includes door body, box and is used for realizing the automatic door opener who opens and close of door body, door opener includes: a drive mechanism and a drive gear set, and a slip mechanism as in all of the embodiments described above. The driving mechanism comprises a motor and a worm sleeved on a driving shaft of the motor, the worm is meshed with the driving gear of the slipping mechanism, so that the motor can transmit driving force to the driving gear through the worm to drive the driving gear to rotate. The driving gear is meshed with the transmission gear set, and in a working state, a driving shaft of the motor drives the worm to rotate, the worm drives the slipping mechanism to move so as to transmit torque to the transmission gear set, and the slipping mechanism drives the transmission gear set to move to drive the opening and closing of the door body of the refrigerator.

The present disclosure also proposes a refrigerator, as shown in fig. 7, including a door body 6, a refrigerator body 5, and a door opening device for automatically opening and closing the door body 6, where the door opening device includes a driving mechanism 4, a transmission gear set 7, and a slipping mechanism.

When the driving shaft of the driving motor 4 applies driving force to the worm, the driving gear 1 of the slipping mechanism is meshed with the worm, so that the worm drives the driving gear 1 to rotate, the driving gear 1 drives the driven gear 2 to synchronously move through the driving assembly 3, the driven gear is meshed with the transmission gear set 7, the driving force is transmitted to the door body 6 of the refrigerator through the transmission gear set 7, and the door body 6 moves relative to the refrigerator body 5 (refer to the arrow direction shown in fig. 7) to open and close the door body 6.

When the driving motor 4 does not apply driving force, the user manually opens and closes the door body 6, so that the driving force is transmitted in reverse direction and is transmitted to the driven gear 2 by the transmission gear set 7, and the driven gear 2 transmits the driving force through the driving assembly 3, and the first torque for driving the driving gear 1 to rotate is larger than the second torque output by the driven gear 2. Consequently, driven gear 2 can't drive gear 1 and move, forms between drive gear 1 and the driven gear 2 and skids and break away from, and drive gear 1 is static for reverse drive power can not transmit to driving motor 4, has promoted the automatic factor of safety that opens the door of refrigerator, has effectively prolonged the life of refrigerator.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements 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 invention is limited only by the appended claims.

Claims

1. A slipping mechanism is characterized by comprising a driving gear and a driven gear which are coaxially arranged, wherein a first torque for driving the driving gear to rotate is larger than a second torque output by the driven gear;

when the driving gear is subjected to driving force, the driving gear rotates, so that the driving gear transmits the first torque to the driven gear through the driving assembly, and the driven gear is driven to synchronously rotate;

2. The slipping mechanism of claim 1, wherein the drive assembly includes a resilient member and a runner, the runner being coaxially disposed and fixedly connected to the driven gear, the resilient member being fixedly connected to the drive gear; in an assembly state, the elastic part is connected with the rotating wheel in a clamping manner;

3. The slipping mechanism of claim 2, wherein the resilient member comprises at least one resilient tab, the runner is formed with at least one notch, and the resilient tab is formed with a snap-fit portion that snaps into the notch.

4. The slipping mechanism of claim 2, wherein the elastic member includes a plurality of elastic pieces, the plurality of elastic pieces being provided on an inner circumferential wall of the drive gear in a circumferential direction, the runner having a plurality of notches formed therein, the plurality of notches being provided on a circumferential outer side wall of the runner;

5. The slipping mechanism of claim 3 or 4, wherein the resilient tab further comprises a body, and a protrusion is formed by bending the middle part of the body outwards, and the protrusion forms the snap-in portion.

6. The slipping mechanism of claim 5, wherein the driving gear has a receiving space formed therein, the resilient member is engaged with an inner sidewall of the receiving space, and the runner is connected to an inner bottom wall of the receiving space.

7. The slipping mechanism of claim 6, wherein the drive gear includes mounting portions disposed in correspondence with two free ends of the body, the free ends of the body being fixedly connected to the mounting portions; wherein, the installation part is arranged on the inner side wall of the accommodating space.

8. The slipping mechanism of claim 7, wherein the mounting portion includes a mounting slot disposed in an inner side wall of the receiving space, the free end of the body being in socket connection with the mounting slot.

9. The slipping mechanism of claim 8, wherein the mounting portion further comprises a mounting body formed in an inner side wall of the receiving space, the mounting groove being formed in the mounting body.

10. The utility model provides a refrigerator, its characterized in that, refrigerator includes door body, box and is used for realizing the automatic door opener who opens and close of door body, door opener includes: a drive mechanism and a drive gear set, and a skid mechanism as claimed in any one of claims 1 to 9;