WO2020048120A1

WO2020048120A1 - Cooking appliance and door body buffer device of cooking appliance

Info

Publication number: WO2020048120A1
Application number: PCT/CN2019/081031
Authority: WO
Inventors: 王�义; 黄志飞
Original assignee: 广东美的厨房电器制造有限公司; 美的集团股份有限公司
Priority date: 2018-09-05
Filing date: 2019-04-02
Publication date: 2020-03-12
Also published as: CN108991943B; CN108991943A

Abstract

A cooking appliance (1) and a door body buffer device (300). The cooking appliance (1) comprises: a box body (100); a door body (200) reversibly provided on the box body (100) between an open position and a close position and provided with door teeth (210); and the door body buffer device (300), comprising: a support (310) mounted in the box body (100); a gear (320) rotatably mounted in the box body (100); a damper (330) respectively connected to the support (310) and the gear (320) in a transmission manner so as to damp rotation of the gear (320) with respect to the support (310); and a rack (340) provided on the door teeth (210) and meshed with the gear (320) at least when the door body (200) is closed and when the door body (200) is close to the close position.

Description

Cooking appliance and door buffer device for cooking appliance

Cross-reference to related applications

This application is based on a Chinese patent application with an application number of 201811031020.X and an application date of September 05, 2018, and claims the priority of the aforementioned Chinese patent application. The entire contents of the aforementioned Chinese patent application are incorporated herein by reference.

Technical field

The present application relates to the technical field of electrical appliance manufacturing, and in particular, to a cooking appliance and a door buffer device of the cooking appliance.

Background technique

In the related art of cooking appliances, the door body of the cooking appliance is affected by inertia when it is closed, and it is easy to collide with the cabinet of the cooking appliance, so that the door body has a large impact sound when the door is closed, resulting in a large noise when the door is closed. User experience.

Application content

This application aims to solve at least one of the technical problems existing in the prior art. For this reason, this application proposes a cooking appliance, which has the advantages of comfortable use and low noise.

The present application also proposes a door buffer device for a cooking appliance having the cooking appliance.

In order to achieve the above object, according to an embodiment of the first aspect of the present application, a cooking appliance is provided, the cooking appliance includes: a box body; a door body, the door body is reversibly disposed between an open position and a closed position; The box body is provided with door teeth on the door body; a door body buffer device, the door body buffer device comprises: a bracket, the bracket is installed in the box body; a gear, the gear is rotatably mounted on Inside the box; a damper, which is respectively connected with the bracket and the gear transmission to dampen the rotation of the gear relative to the bracket; a rack, which is provided on the front teeth The rack gear meshes with the gear at least when the door body is closed and when the door body is adjacent to the closed position.

The cooking appliance according to the embodiment of the present application has the advantages of comfortable use and low noise.

In addition, the cooking appliance according to the above embodiments of the present application may also have the following additional technical features:

According to an embodiment of the present application, the door cushioning device is switchable between a locked state and a driving state. The door cushioning device further includes: a gear seat, the gear seat being between a door opening position and a door closing position. Rotatably mounted on the bracket, and the gear is sleeved on the gear holder; elastic members, the elastic members are respectively connected to the gear holder and the bracket to constantly drive the gear holder to the gear The door closing position moves; a positioning member, the gear body is located in the door opening position when the door buffer device is in the locked state, and the positioning member is connected to the gear seat and the bracket to prevent the The gear base rotates relative to the bracket, and when the door body buffer device is in the driving state, the positioning member is connected to the gear base and the gear, respectively, so that the gear base drives the gear toward the gear together. The closed position turns.

According to an embodiment of the present application, the door body has a contact position and a transmission position located between the open position and the closed position, and a process in which the door body moves from the open position to the closed position Wherein the door body reaches the contact position when the gear contacts the rack, the door body reaches the transmission position when the door body continues to move a predetermined distance, and at the same time, the door body buffer device The lock state is switched to the drive state, and the door body buffer device is switched from the drive state to the lock state when the door body is moved from the transmission position to the contact position.

According to an embodiment of the present application, the bracket has an inner positioning ring, an inner positioning groove is provided on an outer peripheral surface of the inner positioning ring, the gear seat has an outer positioning ring, and the outer positioning ring is provided with each other. A first outer positioning groove and a second outer positioning groove that communicate with each other, the first outer positioning groove penetrates the outer positioning ring in a thickness direction, and the second outer positioning groove is provided on an outer peripheral surface of the outer positioning ring, The gear is provided with a positioning protrusion, and the gear is rotatable relative to the gear seat between a stop position and an avoidance position. When the gear is located in the stop position, the positioning protrusion cooperates with the first position. In an outer positioning groove, the positioning projection fits in the second outer positioning groove when the gear is in the avoiding position, the positioning member is a ball, and the door buffer device is in the locked state When a part of the positioning member fits in the inner positioning groove and another part fits in the first outer positioning groove, the gear is located in the stop position and the positioning protrusion stops against the positioning member To prevent the positioning member from completely moving to the In an outer positioning groove, when the door body buffer device is in the driving state, the gear is located in the avoiding position, and the positioning member fits in the first outer positioning groove and stops against the positioning protrusion. Wherein, when the door body moves from the contact position to the transmission position, the gear moves from the stop position to the avoidance position, and the door body moves from the transmission position to the contact In the position, the gear moves from the avoidance position to the stop position.

According to an embodiment of the present application, one of the bracket and the gear seat is provided with a limiting rib and the other is provided with a limiting groove, and the limiting rib is slidably fitted in the limiting groove, When the gear seat is located in the door opening position and the door closing position, the limiting ribs stop at the two ends of the limiting groove respectively.

According to an embodiment of the present application, the bracket has a rotating shaft, the damper is sleeved on the rotating shaft, the gear seat has a mounting ring located inside the inner positioning ring, and the mounting ring is sleeved on On the damper.

According to an embodiment of the present application, the elastic member is a torsion spring, a first torsion spring fixing hole is provided on the bracket, a second torsion spring fixing hole is provided on the gear seat, and the torsion spring is located in the torsion spring. Between the inner positioning ring and the mounting ring, two ends are fitted in the first torsion spring fixing hole and the second torsion spring fixing hole, respectively.

According to an embodiment of the present application, the door teeth are two and are arranged on the door body at intervals in the vertical direction, and the door body buffer device is two and are arranged in the box body at intervals in the vertical direction.

According to an embodiment of the present application, the cooking appliance further includes a door closing detection switch, and when the door body is closed, a free end of the door tooth presses a contact of the door closing detection switch.

According to an embodiment of the second aspect of the present application, a door buffer device for a cooking appliance is provided. The door buffer device for a cooking appliance includes: a bracket, the bracket is installed in a cabinet of the cooking appliance; The gear is rotatably installed in the cabinet of the cooking appliance; a damper, the damper is drivingly connected to the bracket and the gear to damp the rotation of the gear relative to the bracket; a rack, The rack is provided on a door body of the cooking appliance, and the rack meshes with the gear at least when the door body is closed and when the door body is adjacent to a closed position.

According to the door buffer device of the cooking appliance according to the embodiment of the present application, by using the cooking appliance according to the embodiment of the first aspect of the present application, it has the advantages of comfortable use, low noise, and the like.

Additional aspects and advantages of the present application will be given in part in the following description, part of which will become apparent from the following description, or be learned through practice of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

FIG. 1 is a schematic structural diagram of a cooking appliance according to an embodiment of the present application.

FIG. 2 is a schematic partial structural diagram of a cooking appliance according to an embodiment of the present application.

FIG. 3 is a schematic structural diagram of a door buffer device of a cooking appliance according to an embodiment of the present application.

FIG. 4 is a schematic structural diagram of a door buffer device of a cooking appliance according to an embodiment of the present application.

5 is an exploded view of a door buffering device of a cooking appliance according to an embodiment of the present application.

6 is a cross-sectional view of a door buffering device of a cooking appliance according to an embodiment of the present application.

FIG. 7 is an enlarged view at D in FIG. 6.

8 is a cross-sectional view of a door buffer device of a cooking appliance according to an embodiment of the present application.

FIG. 9 is an enlarged view at E in FIG. 8.

10 is a cross-sectional view of a door buffer device of a cooking appliance according to an embodiment of the present application.

FIG. 11 is an enlarged view at F in FIG. 10.

12 is a cross-sectional view of a door buffering device of a cooking appliance according to an embodiment of the present application.

FIG. 13 is an enlarged view at G in FIG. 12.

14 is a cross-sectional view of a door buffer device of a cooking appliance according to an embodiment of the present application.

FIG. 15 is an enlarged view at H in FIG. 14.

FIG. 16 is a schematic structural diagram of a holder of a cooking appliance according to an embodiment of the present application.

FIG. 17 is a schematic structural diagram of a holder of a cooking appliance according to an embodiment of the present application.

18 is a schematic structural diagram of a gear holder of a cooking appliance according to an embodiment of the present application.

19 is a schematic structural diagram of a gear holder of a cooking appliance according to an embodiment of the present application.

20 is a schematic structural diagram of a gear of a cooking appliance according to an embodiment of the present application.

FIG. 21 is a schematic structural diagram of a damper of a cooking appliance according to an embodiment of the present application.

Reference signs: cooking appliance 1, box 100, door 200, door teeth 210, door buffer 300, bracket 310, inner positioning ring 311, inner positioning groove 312, stop rib 313, rotating shaft 314, first torsion spring Fixing hole 315, gear 320, positioning protrusion 321, damper 330, mounting protrusion 331, mounting hole 332, rack 340, gear holder 350, outer positioning ring 351, first outer positioning groove 352, second outer positioning groove 353, a limiting slot 354, a mounting ring 355, a second torsion spring fixing hole 356, a mounting slot 357, an elastic member 360, a positioning member 370, a cover plate 380, a door closing detection switch 400, and a control box 500.

detailed description

Hereinafter, embodiments of the present application will be described in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present application, and should not be construed as limiting the present application.

The following describes a cooking appliance 1 according to an embodiment of the present application with reference to the drawings.

As shown in FIGS. 1 to 21, a cooking appliance 1 according to an embodiment of the present application includes a cabinet 100, a door 200, and a door buffer device 300.

The door body 200 is reversibly provided on the box body 100 between an open position and a closed position, and door teeth 210 are provided on the door body 200. The door buffer device 300 includes a bracket 310, a gear 320, a damper 330, and a rack 340. The bracket 310 is installed in the cabinet 100. The gear 320 is rotatably installed in the casing 100. The damper 330 is drivingly connected to the bracket 310 and the gear 320 to damp the rotation of the gear 320 relative to the bracket 310. The rack gear 340 is provided on the door gear 210, and the rack gear 340 meshes with the gear 320 at least when the door body 200 is closed and when the door body 200 is close to the closed position.

It needs to be understood here that the transmission connection method referred to as "the transmission connection of the damper 330 with the bracket 310 and the gear 320 respectively" may be a direct connection or an indirect connection through other transmission structures.

According to the cooking appliance 1 in the embodiment of the present application, the door body buffer device 300 is provided, so that the door body buffer device 300 includes a gear 320, a damper 330, and a rack 340, so that the gear 320 of the door body buffer device 300 can be connected with the door. The rack 340 on the door teeth 210 of the body 200 meshes with the transmission. The damper 330 can damp the rotation of the gear 320 relative to the bracket 310. When the door 200 is closed, the speed of the gear 320 can be reduced, thereby reducing the closing speed of the door 200. The slow closing of the door body 200 is realized. Compared with the related art cooking appliances, the inertia effect when closing the door body 200 can be reduced, which facilitates the user to smoothly close the door body 200, facilitates user comfort, and avoids closing. When the door body 200 has a large inertial force, the door body 200 or the box body 100 is deformed or damaged due to collision, which is convenient for improving the structural reliability of the cooking appliance 1 and for extending the service life of the cooking appliance 1.

In addition, compared with cooking appliances in the related art, through the damping effect of the damper 330, the door buffer device 300 can reduce the impact sound of the door body 200 and the cabinet 100 when the door body 200 is closed, which is convenient for reducing the noise generated when the cooking appliance 1 is closed. Noise is convenient for users to use, it is convenient to improve the user experience, it is convenient to improve the noise reduction ability of the cooking appliance 1, and the use performance of the cooking appliance 1 is improved.

Therefore, the cooking appliance 1 according to the embodiment of the present application has the advantages of comfortable use, low noise, and the like.

The following describes a cooking appliance 1 according to a specific embodiment of the present application with reference to the drawings.

In some specific embodiments of the present application, as shown in FIGS. 1 to 21, the cooking appliance 1 according to the embodiment of the present application includes a cabinet 100, a door 200, and a door buffer device 300.

Specifically, the rack gear 340 is formed on the lower surface of the front teeth 210 (the up-down direction is shown by arrow A in FIG. 2).

Specifically, as shown in FIG. 4, the door buffer device 300 is switchable between a locked state and a driving state. The door buffer device 300 further includes a gear holder 350, an elastic member 360 and a positioning member 370. The gear holder 350 is opening the door. The bracket 310 is rotatably mounted between the position and the door closing position, and the gear 320 is sleeved on the gear base 350. The elastic members 360 are respectively connected to the gear base 350 and the bracket 310 to constantly drive the gear base 350 to move to the door closing position. When the door buffer device 300 is in the locked state, the gear holder 350 is located at the door opening position, and the positioning member 370 is connected to the gear holder 350 and the bracket 310 to prevent the gear holder 350 from rotating relative to the bracket 310. In the driving state, the positioning member 370 is respectively connected to the gear base 350 and the gear 320 so that the gear base 350 drives the gear 320 to rotate toward the door closing position together. In this way, by changing the position of the positioning member 370, the positioning member 370 can be changed from a state in which the gear base 350 is prevented from turning to a state in which the gear base 350 can drive the gear 320 to rotate together, which facilitates the realization of the gear base 350 in the door opening position and The switching between the door closing positions is convenient for the door buffer device 300 to automatically close the door 200. At the same time, when the door buffer device 300 is in the driving state, the gear holder 320 can be driven to the closed position by using the elastic force of the elastic member 360 to drive the door 200 to the closed position, thereby realizing the door 200 The automatic closing of the door enables the user to gently push the door 200 to the transmission position to realize the automatic closing of the door 200, which is convenient for the user to save effort when closing the door 200, further improving the user's comfort and cooking utensils. 1 performance.

Of course, it needs to be understood here that there can be multiple ways of setting the positioning member 370 and switching the state. For example, different methods such as manually switching the position of the positioning member 370 or electromagnetically switching the position of the positioning member 370 can be used.

More specifically, the door body 200 has a contact position and a transmission position between the open position and the closed position. During the movement of the door body 200 from the open position to the closed position, the gear 320 and When the rack 340 contacts, the door body 200 reaches the contact position, the door body 200 reaches the transmission position when the door body 200 continues to move a predetermined distance, and at the same time the door body buffer device 300 switches from the locked state to the driving state, When the door body 200 is moved from the transmission position to the contact position, the door body buffer device 300 is switched from the driving state to the locked state. In this way, the door body buffering device 300 can be switched between the locked state and the driving state by changing the position of the door body 200 between the contact position and the transmission position, so that the door body buffering device 300 may drive the door body 200 to the closed position to achieve an automatic door closing action.

Further, as shown in FIG. 16 to FIG. 19, the bracket 310 has an inner positioning ring 311, an inner positioning groove 312 is provided on the outer peripheral surface of the inner positioning ring 311, and the gear seat 350 has an outer positioning ring 351 on the outer positioning ring 351. A first outer positioning groove 352 and a second outer positioning groove 353 communicating with each other are provided. The first outer positioning groove 352 penetrates the outer positioning ring 351 in the thickness direction, and the second outer positioning groove 353 is provided on the outer peripheral surface of the outer positioning ring 351. The gear 320 is provided with a positioning protrusion 321. The gear 320 is rotatable relative to the gear seat 350 between the stop position and the avoidance position. When the gear 320 is located at the stop position, the positioning protrusion 321 fits in the first outer positioning groove 352. When the gear 320 is located in the avoiding position, the positioning protrusion 321 fits in the second outer positioning groove 353, the positioning member 370 is a ball, and when the door buffer device 300 is in the locked state, a part of the positioning member 370 fits in The positioning groove 312 and the other part fit in the first outer positioning groove 352. The gear 320 is located at the stop position and the positioning protrusion 321 stops the positioning member 370 to prevent the positioning member 370 from completely moving into the first outer positioning groove 352. , Door body buffer device 300 in the drive Temporal, gear 320 is in the retracted position, the positioning member 370 fitted in the first positioning groove 352 and outer positioning projection 321 abuts against,

When the door 200 moves from the contact position to the transmission position, the gear 320 moves from the stop position to the avoidance position, and when the door 200 moves from the transmission position to the contact position, the gear 320 320 moves from the avoidance position to the stop position.

Specifically, during the process of closing the door body 200, when the door body 200 is moved from the contact position to the transmission position, the rack gear 340 drives the gear 320 to rotate, and the gear 320 rotates relative to the gear seat 350 from the stop The position is moved to the avoiding position, so that the positioning member 370 moves from the inner positioning groove 312 and the first outer positioning groove 352 to fully fit in the first outer positioning groove 352 and the second outer positioning groove 353, so that The positioning member 370 is moved from a position that prevents the gear base 350 from rotating with respect to the bracket 310 to a position that the gear base 350 can drive the gear 320 to the door closing position together, thereby realizing the door body buffer device 300 from the locked state to The driving state is switched, so that under the driving of the elastic member 360, the gear holder 350 can drive the gear 320 to rotate from the door opening position to the door closing position relative to the bracket 310, and the gear 320 can be connected to the rack 340 on the door teeth 210 The mesh transmission is used to drive the door body 200 to move from the transmission position to the closed position, thereby realizing the automatic door closing process of the door body 200.

During the process of opening the door body 200, the door body 200 moves from the closed position to the transmission position under the action of an external force. The rack gear 340 drives the gear 320 to rotate, the gear drives the gear seat 350 to rotate, and the elastic member 360 is stored under force. Elastic potential energy, when the door body 200 moves to the transmission position, the positioning member 370 drops into the inner positioning groove 312 under the action of gravity, and the positioning member 370 moves from the gear seat 350 to a position where the gear 320 can rotate together, and moves to the position where the gear seat 350 is prevented Relative to the position where the bracket 310 rotates, the door body 200 continues to move toward the contact position, the rack gear 340 continues to drive the gear 320 to rotate relative to the gear seat 350, and the gear 320 moves from the avoiding position to the stop position to achieve door body cushioning Switching of the device 300 from the driving state to the locked state.

This not only facilitates the assembly and molding of the door buffer device 300, but also facilitates the reliable switching of the door buffer device 300 between the locked state and the driving state, and improves the accuracy and state of the door buffer device 300. The reliability of work improves the driving effect of the door buffer device 300.

Specifically, the inner positioning groove 312, the first outer positioning groove 352, the second outer positioning groove 353, and the positioning member 370 may be respectively adapted to a plurality. This not only facilitates the door cushioning device 300 to switch between the locked state and the driving state, and improves the reliability of the function switching of the door cushioning device 300, but also makes the overall force of the door cushioning device 300 more uniform. , Can improve the structural reliability and stability of the door buffer device 300.

Further, the arc transition between the bottom wall and the side wall of the inner positioning groove 312 facilitates the ball to move to the first outer positioning groove 352 after the positioning boss 321 of the gear 320 is removed, which is convenient for the positioning member 370 to achieve the position. Switch.

It should be understood here that the structure for driving the door body 100 to be automatically closed, such as the elastic member 360, may also be provided at a position other than the buffer device, for example, it may be provided at the rotating shaft of the door body 100.

Further, as shown in FIG. 16 to FIG. 19, one of the bracket 310 and the gear base 350 is provided with a limiting rib 313 and the other is provided with a limiting groove 354. The limiting rib 313 is slidably fitted in the limiting groove. In 354, when the gear seat 350 is located in the door opening position and the door closing position, the limiting ribs 313 stop at the two ends of the limiting groove 352, respectively. Specifically, there may be multiple limiting ribs 313 and limiting grooves 354. In this way, the position of the gear base 350 can be limited by using the limiting ribs 313 and the limiting grooves 354 to prevent the gear base 350 from rotating too much relative to the bracket 310 and affecting the normal operation of the door cushioning device 300. The position is smoothly switched between the door opening position and the door closing position.

Specifically, as shown in FIG. 16 to FIG. 19, the bracket 310 has a rotating shaft 314, the damper 330 is sleeved on the rotating shaft 314, the gear holder 350 has a mounting ring 355 inside the inner positioning ring 311, and the mounting ring 355 is sleeved on On the damper 314. Specifically, the cross-section of the rotating shaft 314 in the axial direction is a D-shape, and the damper 330 has a mounting hole 332 having a D-shaped axial cross-section adapted to the rotating shaft 314. This not only facilitates the installation and setting of the bracket 310, the damper 330, and the gear base 350, but also can use the rotating shaft 314 and the mounting hole 332 to fix and position the bracket 310 and the damper 330, avoiding relative rotation of the bracket 310 and the damper 330, which is convenient Increasing the damping effect of the damper 330 to reduce the rotation speed of the gear holder 350, thereby reducing the closing speed of the door body 200, and further reducing the noise generated by the door body 200 closing.

Further, as shown in FIG. 18 and FIG. 21, a mounting protrusion 331 is provided on the outer peripheral surface of the damper 330, and an installation matching the mounting protrusion 331 is provided on the inner peripheral surface of the mounting ring 355 of the gear holder 350. There may be multiple grooves 357, mounting protrusions 331, and mounting grooves 357. In this way, the limit protrusion 331 and the mounting groove 357 can be used to position the damper 330 and the gear base 350, which facilitates the assembly of the damper 330 and the gear base 350, and facilitates the transmission connection between the damper 330 and the gear base 350.

More specifically, as shown in FIG. 16 to FIG. 19, the elastic member 360 is a torsion spring, the bracket 310 is provided with a first torsion spring fixing hole 315, and the gear holder 350 is provided with a second torsion spring fixing hole 356. The torsion spring is located between the inner positioning ring 311 and the mounting ring 355 and both ends are fitted into the first torsion spring fixing hole 315 and the second torsion spring fixing hole 356, respectively. This not only facilitates the installation and setting of the elastic member 360, but also can utilize the torsional deformation recovery capability of the torsion spring to constantly drive the gear holder 350 to the door closing position.

Optionally, as shown in FIG. 2, two door teeth 210 are provided on the door body 200 at intervals in the vertical direction, and two door body buffer devices 300 are provided in the box body 100 at intervals in the vertical direction. This can not only make the force of the door 200 more balanced, but also improve the reliability of closing the door 200.

Specifically, as shown in FIG. 2, the cooking appliance 1 further includes a door closing detection switch 400. When the door 200 is closed, the free end of the door teeth 210 presses the contact of the door closing detection switch 400. In this way, the door closing detection switch 400 can be used to detect whether the door body 200 is closed in place, which is convenient for improving the reliability of closing the door body 200, and further improving the working reliability of the cooking appliance 1.

More specifically, as shown in FIG. 1, the cooking appliance 1 further includes a control box 500. In this way, after closing the door 200 of the cooking appliance, the user can control the working state of the cooking appliance 1 through the control box 500 to use the cooking appliance 1 to cook food.

Optionally, as shown in FIG. 4, the bracket 310 further includes a cover plate 380, and the cover plate 380 is mounted on the bracket 310 by screws. In this way, not only the gear 320 can be limited to prevent axial disengagement when the gear 320 rotates, but also the strength of the bracket 310 can be strengthened and the structural stability of the bracket 310 can be improved.

Specifically, when assembling the door buffer device 300, the damper 330 is mounted on the bracket 310, one end of the elastic member 360 is engaged with the bracket 310, the gear holder 350 is assembled on the damper 330, and the gear holder 350 is adjusted. The angle is engaged with the other end of the elastic member 360, the positioning member 370 is placed in the first outer positioning groove 352 of the gear holder 350, the gear 320 is assembled on the gear holder 350, and then the cover plate 380 is closed and the screw is locked, Turn the gear 320 to the stop position to complete the assembly of the door buffer device 300.

The working process of opening and closing the door 200 of the cooking appliance 1 according to an embodiment of the present application will be described in detail below with reference to the drawings.

During the process of closing the door body 200, the door body 200 moves from the open position to the contact position, the rack 340 and the gear 320 start to mesh, and then moves from the contact position to the transmission position, and the rack 340 drives The gear 320 rotates, the gear 320 rotates relative to the gear base 350, moves from the stop position to the avoidance position, and causes the positioning member 370 to move from the inner positioning groove 312 and the first outer positioning groove 352 to fully fit in Inside the first outer positioning groove 352 and the second outer positioning groove 353, the positioning member 370 can be moved from a position that prevents the gear base 350 from rotating relative to the bracket 310 to a position that the gear base 350 can drive the gear 320 to the door closing position together Position, the door buffer device 300 is switched from the locked state to the driven state. Driven by the elastic member 360, the gear holder 350 drives the gear 320 to rotate from the door opening position to the door closing position relative to the bracket 310. The gear 320 drives the rack 340 on the door teeth 210 to move the door body 200 from the transmission position to the closed position, thereby realizing the automatic door closing process of the door body 200.

During the process of opening the door body 200, the door body 200 moves from the closed position to the transmission position under the effect of external force. The rack gear 340 drives the gear 320 and the gear seat 350 to rotate together, and the elastic member 360 is forced to store the elastic potential energy. When the door body 200 moves to the transmission position, the positioning member 370 drops into the inner positioning groove 312 under the action of gravity, and the positioning member 370 is switched from a position where the gear holder 350 can drive the gear 320 to rotate together, and is switched to a position that prevents the gear holder 350 from supporting the bracket At the 310 rotation position, the door body 200 continues to move toward the contact position, the rack gear 340 continues to drive the gear 320 to rotate relative to the gear seat 350, and the gear 320 moves from the avoiding position to the stop position to realize the door body buffer device 300 Switching from the driving state to the locked state, the door body 200 continues to move to the open position, thereby realizing the door opening process of the door body 200.

The door body cushioning device of a cooking appliance according to an embodiment of the present application is described below. The door body buffering device of a cooking appliance according to an embodiment of the present application includes: a bracket installed in a cabinet of the cooking appliance; a gear rotatably installed in the cabinet of the cooking appliance; a damper The damper is respectively connected with the bracket and the gear transmission to dampen the rotation of the gear relative to the bracket; a rack, the rack is provided on the door body of the cooking appliance, the The rack gear meshes with the gear at least when the door body is closed and when the door body is adjacent to the closed position.

The door buffer device of the cooking appliance according to the embodiment of the present application has the advantages of comfortable use, low noise, and the like.

Other components and operations of the cooking appliance according to the embodiments of the present application are known to those skilled in the art, and will not be described in detail here.

In the description of this application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Rear "," left "," right "," vertical "," horizontal "," top "," bottom "," inside "," outside "," clockwise "," counterclockwise "," axial ", The directions or positional relationships indicated by "radial" and "circumferential" are based on the positional or positional relationships shown in the drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying the device or element referred to. It must have a specific orientation and be constructed and operated in a specific orientation, so it cannot be understood as a limitation on this application. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, "multiple" means two or more. In the description of the present application, the first feature "above" or "below" the second feature may include the first and second features in direct contact, or the first and second features may not be in direct contact but through them Additional characteristic contact between.

In the description of the present application, the first feature is "above", "above", and "above" the second feature, including the first feature is directly above and obliquely above the second feature, or merely indicates that the first feature is higher in level than The second feature.

In the description of this application, it should be noted that the terms "installation", "connected", and "connected" should be understood in a broad sense unless explicitly stated and limited otherwise. For example, they may be fixed connections or removable. Connected or integrated; it can be mechanical or electrical; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood in specific situations.

In the description of this specification, the description with reference to the terms “one embodiment”, “some embodiments”, “exemplary embodiments”, “examples”, “specific examples”, or “some examples”, etc., means in combination with the implementation The specific features, structures, materials, or characteristics described in the examples or examples are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, The scope of the application is defined by the claims and their equivalents.

Claims

A cooking appliance, comprising:

Box

A door body, which is reversibly provided on the box body between an open position and a closed position, and the door body is provided with door teeth;

Door body buffer device, the door body buffer device includes:

A bracket, which is installed in the box;

A gear that is rotatably mounted in the case;

A damper, which is connected to the bracket and the gear transmission to damp the rotation of the gear relative to the bracket;

A rack that is provided on the door teeth, the rack meshing with the gear at least when the door body is closed and when the door body is adjacent to the closed position.
The cooking appliance according to claim 1, wherein the door buffer device is switchable between a locked state and a driving state, and the door buffer device further comprises:

A gear seat which is rotatably mounted on the bracket between a door opening position and a door closing position, and the gear is sleeved on the gear seat;

An elastic member, which is respectively connected to the gear holder and the bracket to constantly drive the gear holder to move to the door closing position;

A positioning member, the gear body is located in the door opening position when the door buffer device is in the locked state, and the positioning member is respectively connected to the gear seat and the bracket to prevent the gear seat from facing When the bracket rotates, when the door buffer device is in the driving state, the positioning member is connected to the gear base and the gear, respectively, so that the gear base drives the gear to rotate toward the door closing position.
The cooking appliance according to claim 2, wherein the door body has a contact position and a transmission position between the open position and the closed position, and the door body is moved from the open position to the door position. During the movement of the closed position, the door body reaches the contact position when the gear contacts the rack, and the door body reaches the transmission position when the door body continues to move a predetermined distance, while the The door buffer device is switched from the locked state to the drive state, and the door buffer device is switched from the drive state to the lock state when the door body is moved from the transmission position to the contact position. status.
The cooking appliance according to claim 3, wherein the bracket has an inner positioning ring, an inner positioning groove is provided on an outer peripheral surface of the inner positioning ring, the gear seat has an outer positioning ring, and the outer The positioning ring is provided with a first outer positioning groove and a second outer positioning groove that communicate with each other. The first outer positioning groove penetrates the outer positioning ring in a thickness direction, and the second outer positioning groove is provided in the outer positioning. On the outer peripheral surface of the ring, the gear is provided with a positioning protrusion, and the gear is rotatable relative to the gear seat between a stop position and an avoidance position. The lifting projection fits in the first outer positioning groove, and the positioning protrusion fits in the second outer positioning groove when the gear is in the avoiding position. The positioning member is a ball, and the door body buffer device. In the locked state, a part of the positioning member fits in the inner positioning groove and another part fits in the first outer positioning groove, the gear is located in the stop position and the positioning protrusion Start and stop against the positioning member to prevent the positioning The gear is completely moved into the first outer positioning groove. When the door buffer device is in the driving state, the gear is located in the avoiding position. The positioning member is fitted in the first outer positioning groove. Stop against the positioning protrusion,

Wherein, when the door body moves from the contact position to the transmission position, the gear moves from the stop position to the avoidance position, and the door body moves from the transmission position to the contact position At that time, the gear moves from the avoidance position to the stop position.
The cooking appliance according to claim 4, wherein one of the bracket and the gear seat is provided with a limiting rib and the other is provided with a limiting groove, and the limiting rib is slidably fitted in the space. When the gear seat is located in the door opening position and the door closing position in the limiting groove, the limiting ribs stop at the two ends of the limiting groove respectively.
The cooking appliance according to claim 4, wherein the bracket has a rotating shaft, the damper is sleeved on the rotating shaft, and the gear seat has a mounting ring located inside the inner positioning ring. The mounting ring is sleeved on the damper.
The cooking appliance according to claim 6, wherein the elastic member is a torsion spring, the bracket is provided with a first torsion spring fixing hole, and the gear seat is provided with a second torsion spring fixing hole. The torsion spring is located between the inner positioning ring and the mounting ring, and both ends fit in the first torsion spring fixing hole and the second torsion spring fixing hole, respectively.
The cooking appliance according to claim 1, wherein the door teeth are two and are arranged on the door body at intervals in the vertical direction, and the door buffer device is two and arranged at intervals in the vertical direction. In the box.
The cooking appliance according to claim 1, further comprising a door closing detection switch, and when the door body is closed, a free end of the door tooth presses a contact of the door closing detection switch.
A door buffer device for a cooking appliance, comprising:

A bracket, which is installed in a box of the cooking appliance;

A gear that is rotatably mounted in a casing of the cooking appliance;

A damper, which is connected to the bracket and the gear transmission to damp the rotation of the gear relative to the bracket;

A rack, which is provided on a door body of the cooking appliance, the rack meshing with the gear at least when the door body is closed and when the door body is adjacent to a closed position.