CN111980516B

CN111980516B - Switching door subassembly and cooking device

Info

Publication number: CN111980516B
Application number: CN202010677023.1A
Authority: CN
Inventors: 王�义; 黄志飞
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2022-03-22
Anticipated expiration: 2040-07-14
Also published as: CN111980516A

Abstract

The invention belongs to the technical field of kitchen equipment, and particularly relates to a door opening and closing assembly and a cooking device. The door opening and closing assembly comprises a support, a cover plate, a connecting unit and a buffering unit, wherein the cover plate is connected with the support, at least part of the cover plate covers the support, an installation cavity is formed between the cover plate and the support, the connecting unit is arranged in the installation cavity in a sliding mode and used for being matched with a door latch, and the buffering unit is connected with the connecting unit and used for buffering the sliding of the connecting unit in the door closing process. According to the door opening and closing assembly, when the door is closed, the bolt is inserted into the mounting cavity and connected with the connecting unit, the bolt extrudes the buffer unit through the connecting unit in the door closing process, and the buffer unit buffers the sliding of the connecting unit and the bolt, so that the advancing speed of the bolt is effectively slowed down, the impact force when the door is closed is further reduced, the impact noise generated in the door closing process is reduced or eliminated, and the customer satisfaction is improved.

Description

Switching door subassembly and cooking device

Technical Field

The invention belongs to the technical field of kitchen equipment, and particularly relates to a door opening and closing assembly and a cooking device.

Background

The door hook capable of sliding up and down is installed on the existing cooking appliance door structure, a spring on the door body always pulls the door hook downwards to be in the lowest end state, and an interlocking support provided with a slope is installed on a cavity. Two forces need to be overcome during the closing of the oven door: the first overcomes the pulling force of the spring and the second overcomes the resistance of the door hook climbing the slope of the interlocking bracket. Therefore, limited by the structure, the cooking appliance consumes a large amount of force in the process of closing the oven door, the impact sound is large, and the user experience is poor.

Disclosure of Invention

The object of the invention is to at least solve the problem of loud impact sounds during the closing of the oven door. This object is achieved by:

a first aspect of the present invention provides a door opening and closing assembly comprising:

a support;

the cover plate is connected with the bracket, at least partially covers the bracket and forms an installation cavity with the bracket;

the connecting unit is arranged in the mounting cavity in a sliding mode and is used for being matched with the door latch;

and the buffer unit is connected with the connecting unit and used for buffering the sliding of the connecting unit in the door closing process.

According to the switching door assembly, the connecting unit is arranged in the installation cavity formed by the support and the cover plate, and is connected with the buffer unit, when the door is closed, the bolt is inserted into the installation cavity and is connected with the connecting unit, the bolt extrudes the buffer unit through the connecting unit in the door closing process, and the buffer unit buffers the sliding of the connecting unit and the bolt, so that the advancing speed of the bolt is effectively slowed down, the impact force generated when the door is closed is further reduced, the impact noise generated when the door is closed is reduced or eliminated, and the customer satisfaction is improved.

In addition, the switching door assembly according to the present invention may have the following additional technical features:

in some embodiments of the invention, the connection unit comprises:

the sliding block is arranged in the mounting cavity in a sliding mode;

the first connecting piece is rotatably arranged in the mounting groove of the sliding block and is provided with a first profiling groove;

the second connecting piece is rotatably arranged in the mounting groove of the sliding block and is provided with a second profiling groove;

the first contour groove and the second contour groove are oppositely arranged, and the first contour groove and the second contour groove are jointly used for holding a bolt inserted into the mounting cavity tightly.

In some embodiments of the present invention, a first sliding column and a second sliding column are respectively disposed on one side of the first connecting piece and one side of the second connecting piece facing the slider, a first groove and a second groove are disposed in the mounting groove of the slider at intervals, the first sliding column is slidably inserted into the first groove, and the second sliding column is slidably inserted into the second groove.

In some embodiments of the present invention, the bracket is provided with a first sliding groove, the first sliding pillar passes through the first groove and is inserted into the first sliding groove, and the first sliding groove includes:

the straight line section is arranged along the length direction of the first sliding chute and used for guiding the first sliding column;

and the arc line segment is in transition connection with the straight line segment and is used for clamping the first sliding column.

In some embodiments of the present invention, a second sliding groove is further disposed on the bracket, and at least one third sliding column is disposed on one side of the sliding block facing the bracket, and the third sliding column is inserted into the second sliding groove and can slide along the second sliding groove.

In some embodiments of the invention, the buffer unit comprises:

the mounting seat is connected with the bracket;

the damping body is fixed on the mounting seat;

the damping device comprises a connecting rod, one end of the connecting rod is inserted into the damping body, the other end of the connecting rod is provided with a connecting end, the connecting end is connected with the connecting unit, and the connecting rod can slide in the damping body in a damping mode along the axial direction of the connecting rod.

In some embodiments of the invention, the buffer unit further comprises:

the spring is sleeved outside the damping body, and two ends of the spring are respectively connected with the connecting end and the damping body.

In some embodiments of the present invention, the damping body is a cylinder body having a one-way buffering function when the connecting rod is compressed.

In some embodiments of the present invention, the door opening and closing assembly further includes a micro switch, the micro switch is connected to the bracket, and the sliding block abuts against the micro switch when the door is closed.

In another aspect of the invention, a cooking device is provided, wherein the cooking device is provided with the door opening and closing assembly.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. Wherein:

FIG. 1 is a schematic view of a cooking apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of a connection structure of the box body and the switching door assembly in FIG. 1;

FIG. 3 is a schematic view of the latch of FIG. 2 in connection with the switching door assembly;

FIG. 4 is an exploded view of the latch and switching door assembly of FIG. 3;

FIG. 5 is a front view of the slider of FIG. 4;

FIG. 6 is a schematic view of a backside structure of the slider of FIG. 5;

FIG. 7 is a rear view of the first connecting member of FIG. 4;

FIG. 8 is a partial schematic structural view of the relative positions of the bracket and the slider shown in FIG. 4;

FIG. 9 is a partial structural view of a buffer unit in a state where the furnace door of FIG. 4 is closed;

FIG. 10 is a partial schematic structural view of a buffer unit in the state where the door of the furnace of FIG. 4 is opened;

FIG. 11 is a partial schematic view of the latch of FIG. 3 shown without the latch inserted into the switching door assembly;

FIG. 12 is a partial schematic structural view of the latch of FIG. 3 in an initial state when the latch contacts the connector unit;

FIG. 13 is a partial schematic view showing the sliding structure of the latch push link unit of FIG. 3;

figure 14 is a partial schematic structural view of the latch of figure 3 in a fully engaged condition with the attachment unit;

FIG. 15 is a partial schematic structural view of the door latch and switching door assembly of FIG. 3 with the door closed.

The reference numerals in the drawings denote the following:

100: an opening and closing door assembly;

10: support, 11: first chute, 111: straight line segment, 112: arc segment, 12: second chute, 13: mounting a column;

20: a cover plate;

30: connection unit, 31: slider, 311: mounting groove, 312: first groove, 313: second groove, 314: third strut, 315: connecting groove, 32: first connecting member, 321: first strut, 322: second spool, 323: first contoured surface, 33: second connector, 331: a second contoured surface;

40: buffer unit, 41: mount, 42: damping body, 43: connecting rod, 44: connection end, 45: a spring;

50: a microswitch;

60: a screw;

200: a latch;

300: a box body;

400: a furnace door;

1000: provided is a cooking device.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The present invention provides a cooking apparatus 1000, which is shown in fig. 1 and 2, and includes a cabinet 300, wherein a heating chamber for cooking is provided in the cabinet 300, and an oven door 400 is rotatably connected to the cabinet 300 to control the opening and closing of the heating chamber. The inside of the box 300 is further connected with a door opening and closing assembly 100, a latch 200 corresponding to the door opening and closing assembly 100 is disposed on the oven door 400, and the door opening and closing process of the oven door 400 is realized by the cooperation of the latch 200 and the door opening and closing assembly 100.

As shown in fig. 2 to 4, the opening and closing door assembly 100 of the present embodiment includes a bracket 10, a cover plate 20, a connection unit 30, and a buffer unit 40. The cover plate 20 is connected to the bracket 10, the cover plate 20 at least partially covers the bracket 10 and forms a mounting cavity with the bracket 10, and the connecting unit 30 is slidably disposed in the mounting cavity. The latch 200 is inserted into the mounting cavity and connected to the connection unit 30 during the closing and opening of the door 400. The buffer unit 40 is connected to the link unit 30 for buffering the sliding of the link unit 30 during the door closing process.

According to the door opening and closing assembly 100 of the present invention, by disposing the connection unit 30 in the installation cavity formed between the bracket 10 and the cover plate 20 and connecting the connection unit 30 with the buffer unit 40, when the door 400 is closed, the latch 200 is inserted into the installation cavity and connected with the connection unit 30, the latch 200 presses the buffer unit 40 through the connection unit 30 during the door closing process, and the buffer unit 40 buffers the sliding of the connection unit 30 and the latch 200, thereby effectively slowing down the advancing speed of the latch 200, further reducing the impact force when the door 400 is closed, reducing or eliminating the impact noise generated when the door is closed, and improving the customer satisfaction.

In this embodiment, the box 300 is provided with two door opening and closing assemblies 100 connected along the height direction thereof, and two latches 200 are correspondingly provided on the corresponding oven door 400 to cooperate with the door opening and closing assemblies 100 to complete the opening and closing process of the oven door 400. By arranging the two opening and closing door assemblies 100 in the height direction of the cabinet 300, the stress balance and the sealing performance of the oven door 400 during the opening and closing processes can be effectively ensured. In other embodiments of the present application, the number of the switching door assemblies 100 is not limited.

As shown in fig. 4, 5, and 11, the connection unit 30 in the present embodiment includes a slider 31, a first link 32, and a second link 33. The slide block 31 is slidably arranged in the mounting cavity, the first connecting piece 32 and the second connecting piece 33 are respectively arranged in the mounting groove 311 of the slide block 31 in a rotatable manner, the first connecting piece 32 is provided with a first contour groove 323, and the second connecting piece 33 is provided with a second contour groove 331. Wherein the first cam-shaped groove 323 and the second cam-shaped groove 331 are oppositely arranged, and the first cam-shaped groove 323 and the second cam-shaped groove 331 are used together for clasping the door latch 200 inserted into the mounting cavity.

As shown in fig. 4 to 8, in the present embodiment, two linear second sliding grooves 12 are disposed on an inner surface of the bracket 10 opposite to the cover plate 20, the four third sliding posts 314 capable of being inserted into the second sliding grooves 12 are disposed on a back surface of the sliding block 31 facing the bracket 10, and two third sliding posts 314 are inserted into any one of the second sliding grooves 12 at intervals, so that the sliding of the sliding block 31 is realized by the cooperation between the third sliding posts 314 and the second sliding grooves 12. Of course, the connection relationship between the slider 31 and the holder 10 in the present application is not limited to the configuration in the present embodiment, and in other embodiments of the present application, it suffices that the slider 31 slides with respect to the holder 10. The slider 31 is provided with a mounting groove 311 on the front side thereof disposed toward the cover plate 20, and the first link 32 and the second link 33 are rotatably disposed in the mounting groove 311 of the slider 31, respectively, so that the latch 200 is clamped and released by the rotation of the first link 32 and the second link 33, thereby achieving the coupling relationship of the latch 200 and the coupling unit 30.

In this embodiment, two sets of first grooves 312 and second grooves 313 are disposed on the bottom surface of the mounting groove 311 at intervals, and the first connecting piece 32 and the second connecting piece 33 are respectively matched with one of the two sets. The first and second connecting

members

32 and 33 are provided at the bottom with a first sliding column 321 and a second sliding column 322, respectively, the first sliding column 321 being slidably inserted into the first groove 312, and the second sliding column 322 being slidably inserted into the second groove 313. The first groove 312 and the second groove 313 in this embodiment are arc-shaped grooves respectively and are oppositely arranged, so as to satisfy the rotating process of the first connecting piece 32 and the second connecting piece 33 in the mounting groove 311.

As shown in fig. 8, the bracket 10 of the present embodiment is provided with a first sliding groove 11, and the first sliding column 321 passes through the first groove 312 and is inserted into the first sliding groove 11. The first sliding chute 11 comprises a straight line section 111 and an arc line section 112, the straight line section 111 is arranged along the length direction of the first sliding chute 11 and used for guiding the first sliding column 321 to move along the straight line direction, the arc line section 112 is in transition connection with the straight line section 111, and the first sliding column 321 can be clamped into the arc line section 112. Wherein, the arrangement direction of the arc segment 112 is consistent with the arrangement direction of the first groove 312. The length of the first sliding pillar 321 in this embodiment is greater than the length of the second sliding pillar 322, and when the first connecting member 32 is assembled with the sliding block 31, the first sliding pillar 321 is inserted into the first groove 312 and extends beyond the back surface of the sliding block 31, so as to cooperate with the first sliding groove 11. The second sliding pillar 322 is inserted into the second groove 313 and does not extend beyond the back surface of the sliding block 31. The second connecting member 33 and the first connecting member 32 in this embodiment have the same structure, and are not described again. The inner surface of the bracket 10 is correspondingly provided with a straight line segment 111 and an arc segment 112 which are correspondingly arranged with the second connecting piece 33. To ensure the clamping of the latch 200 by the first link 32 and the second link 33, the first link 32 and the second link 33 are respectively provided with a contoured surface having a shape similar to or the same as the shape of the insertion end of the latch 200, the specific shape of the contoured surface being determined according to the shape of the insertion end of the latch 200. In this embodiment, the insertion end of the latch 200 is circular, and the profile surfaces of the corresponding first link 32 and second link 33 are circular arcs.

When the door 400 is opened from the closed state, the latch 200 drives the first link 32 and the second link 32 to slide, when the first sliding column 321 on the first link 32 and the second link 33 enters the arc segment 112 from the straight segment 111, the latch 200 continues to move and drives the first link 32 and the second link 33 to rotate, the first sliding column 321 rotates in the arc segment 112, when the first link 32 and the second link 33 rotate to a certain angle, the latch 200 is disengaged from the connecting unit 30, and simultaneously the first sliding column 321 is clamped into the arc segment 112, so that after the latch 200 is disengaged from the connecting unit 30, the first link 32 and the second link 33 still maintain the rotation angle at the time of disengaging from the latch 200, so that the latch 200 is inserted into the connecting unit 30 again.

Referring to fig. 3 and 4, in the present embodiment, the cover plate 20 covers only the front end portion of the bracket 10 and is fixedly coupled by the screws 60, and the connection unit 30 is disposed in the mounting cavity, thereby preventing the connection unit 30 from being displaced during sliding. The elastic unit 40 is connected to the bracket 10 and is provided outside the installation cavity, thereby facilitating installation and position adjustment of the elastic unit 40. The switch door assembly 100 in this embodiment also includes a microswitch 50. Micro-gap switch 50 locates the intermediate position of support 10, is equipped with the erection column 13 of protrusion setting on the support 10, is equipped with the mounting hole that corresponds the setting with erection column 13 on the micro-gap switch 20, thereby the assembly between micro-gap switch 50 and support 10 is realized to the mounting hole in the grafting of erection column 13. When the oven door 400 is in the fully closed state, the slider 31 abuts against the micro switch 50, thereby triggering the micro switch 50 and alerting a user that the oven door 400 is in the closed state. When the slider 31 slides under the action of the latch 200 and disengages the microswitch 50, the microswitch 50 is triggered again and alerts the user that the oven door 400 is in the not-closed state.

Referring to fig. 9 and 10, the damping unit 40 of the present embodiment includes a mounting base 41, a damping body 42, a link 43, and a connection end 44. The mounting block 41 is connected to the bracket 10 and fastened by screws 60. The damping body 42 is fixed to the mounting base 41, a cavity is formed in the mounting base 41, and one end of the damping body 42 is inserted into the cavity of the mounting base 41 and fixed. One end of the link 43 is inserted into the damper body 42, and the link 43 can slide in its axial direction. The other end of the link 43 is provided with a connection terminal 44, and the connection terminal 44 is connected to the connection unit 30. The damping body 42 in this embodiment is a cylinder body having a one-way buffer function, and hydraulic oil is provided in the cylinder body. When the door 400 is closed, the latch 200 presses the buffer unit 40 through the connection unit 30, and the advancing speed of the latch 200 can be slowed down through the one-way buffer action of the damping body 42, so that the impact force when the door 400 is closed is reduced, the impact noise generated when the door is closed is reduced or eliminated, and the customer satisfaction is improved. When the oven door 400 is opened, the damping body 42 has no buffer function, so that the oven door 400 can be opened by normal force.

Referring to fig. 6, a connection groove 315 is formed on an end surface of the sliding block 31 facing the elastic unit 40, and the connection terminal 44 is inserted into the connection groove 315 in a shape-matching manner, so as to complete a connection process between the connection unit 30 and the buffer unit 40. In the present embodiment, the outer peripheral surface of the connection tip 44 and the inner wall surface of the connection groove 315 are both cylindrical structures.

The damping unit 40 in this embodiment further includes a spring 45, the spring 45 is sleeved outside the damping body 42, and two ends of the spring 45 are respectively connected to the connection end 44 and the damping body 42. When the oven door 400 is in the open state, the spring 45 is in the tensile state, and when the door latch 200 presses the buffer unit 40 through the connection unit 30 in the closing process of the oven door 400, the spring 45 is restored to the original state according to the elastic potential energy after the deformation of the spring 45, so that the force applied in the door closing process can be reduced, and the oven door 400 can be closed only by applying a small force to push the oven door 400. When the door 400 is in the closed state, the spring 45 is in a natural state or a compressed state.

As shown in fig. 11, when the door 400 is closed by the opening and closing door assembly 100 according to the present embodiment, the door 400 is pushed to move the latch 200 toward the opening and closing door assembly 100 and to insert the latch 200 into the mounting cavity. As shown in fig. 12, at this time, the latch 200 is just moved to a position where it is in contact with the first link 32 and the second link 33, neither the first link 32 nor the second link 33 is rotated, and the buffer unit 40 is not compressed. As shown in fig. 13, the latch 200 is pushed further, and the latch 200 presses the first link 32 and the second link 33, so that the first link 32 and the second link 33 start to rotate, and the first sliding column 321 slides in the arc segment 112. As shown in fig. 14, the latch 200 is pushed further, and the first link 32 and the second link 33 continue to rotate under the action of the latch 200 until the latch 200 is fully clasped, at which time the first sliding column 321 slides to the junction of the straight segment 111 and the arc segment 112. As shown in fig. 15, the latch 200 is pushed continuously, the slider 31 slides along the second chute 12 under the action of the latch 200, the first link 32 and the second link 33 slide along the straight section 111 of the first chute 11 under the action of the latch 200, and the spring 45 in the stretched state recovers its shape, thereby achieving the closing process of the oven door 200. In this process, the damping body 42 can play a one-way buffering role, so as to slow down the advancing speed of the latch 200, further reduce the impact force when the door 400 is closed, reduce or eliminate the impact noise generated when the door is closed, and improve the customer satisfaction.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An opening and closing door assembly, comprising:

a support;

the connecting unit comprises a sliding block, a first connecting piece and a second connecting piece, the sliding block is arranged in the mounting cavity in a sliding mode, the first connecting piece is arranged in a mounting groove of the sliding block in a rotatable mode, a first contour groove is formed in the first connecting piece, the second connecting piece is arranged in the mounting groove of the sliding block in a rotatable mode, a second contour groove is formed in the second connecting piece, the first contour groove and the second contour groove are oppositely arranged, and the first contour groove and the second contour groove are jointly used for tightly holding a bolt inserted into the mounting cavity;

2. The door opening and closing assembly according to claim 1, wherein a first sliding column and a second sliding column are respectively disposed on one side of the first connecting member and one side of the second connecting member facing the sliding block, a first groove and a second groove are disposed in the mounting groove of the sliding block at intervals, the first sliding column is slidably inserted into the first groove, and the second sliding column is slidably inserted into the second groove.

3. The door opening and closing assembly according to claim 2, wherein the bracket is provided with a first sliding groove, the first sliding column passes through the first groove and is inserted into the first sliding groove, and the first sliding groove comprises:

4. The switching door assembly according to claim 3, wherein the bracket is further provided with a second sliding groove, and one side of the sliding block facing the bracket is provided with at least one third sliding column which is inserted into the second sliding groove and can slide along the second sliding groove.

5. The switching door assembly as claimed in claim 1, wherein the buffer unit comprises:

the mounting seat is connected with the bracket;

the damping body is fixed on the mounting seat;

6. The switching door assembly as claimed in claim 5, wherein the damping unit further comprises:

7. The switching door assembly as claimed in claim 5, wherein the damping body is a cylinder body having a one-way buffering function when the link is compressed.

8. The opening and closing door assembly according to any one of claims 1 to 7, further comprising a micro switch connected to said bracket, said slider abutting said micro switch in a closed door state.

9. A cooking device having the switch door assembly of any one of claims 1 to 8.