CN110206409B

CN110206409B - Door lock assembly and have its cooking device

Info

Publication number: CN110206409B
Application number: CN201910447317.2A
Authority: CN
Inventors: 王�义
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: 2019-05-27
Filing date: 2019-05-27
Publication date: 2021-01-01
Anticipated expiration: 2039-05-27
Also published as: CN110206409A

Abstract

The invention relates to a door lock assembly and a cooking appliance with the same, wherein the door lock assembly comprises: the interlocking bracket is provided with a movable cavity extending along the front-back direction; the piston is slidably and rotatably arranged in the movable cavity, a first sliding groove is formed in the side wall of the movable cavity, a first sliding block which can slidably extend into the first sliding groove is arranged on the piston, the first sliding groove comprises a first groove section extending along the front-back direction and a second groove section which is connected with the front end of the first groove section and forms an included angle with the first groove section, the piston has a locking angle and an unlocking angle, the first sliding block is located in the first groove section when the piston is at the locking angle, and the first sliding block is located in the second groove section when the piston is at the unlocking angle; the spring bolt can drive the piston to rotate, so that the piston is switched between a locking angle and an unlocking angle, the spring bolt is connected with the piston when the piston is at the locking angle, and the spring bolt is separated from the piston when the piston is at the unlocking angle; and the resetting piece applies backward force to the piston.

Description

Door lock assembly and have its cooking device

Technical Field

The invention belongs to the field of household appliances, and particularly relates to a door lock assembly and a cooking appliance with the same.

Background

The door body of the existing cooking appliance is provided with a door hook capable of sliding up and down, the door body is also provided with a spring which always applies downward tension to the door hook, so that the door hook is positioned at the lowest end, and a box body of the cooking appliance is provided with an interlocking support with a slope. When the door body is closed, external force is required to be provided to push the door hook to overcome the tensile force of the spring and climb up the slope of the interlocking support, and the door hook quickly slides down to a low point under the tensile force of the spring after climbing over the top point of the slope, so that the door body is driven to be closed. When the door body is opened, external force is required to be provided to pull the door hook to overcome the tensile force of the spring and climb up the slope of the interlocking support, the door hook slides down to a low point under the tensile force of the spring after climbing over the top point of the slope, and the door body is opened. From the above process, the process of closing the door body needs to overcome two forces: the first is to overcome the tension of the door hook spring, and the second is to overcome the resistance of the door hook climbing the slope of the interlocking bracket; the process of opening the door body requires two forces to be overcome: the first is to overcome the pulling force of door hook spring, and the second is to overcome the resistance that the door hook climbed the interlocking support slope.

In addition, due to the limited structure, the door body can impact the box body when the door is closed, so that slamming noise is generated, and the user experience is poor.

Disclosure of Invention

The invention aims to at least solve the problem that the door body of the cooking appliance is labor-consuming to close. The purpose is realized by the following technical scheme:

a first aspect of the present invention proposes a door lock assembly for a cooking appliance, the door lock assembly comprising: the interlocking device comprises an interlocking bracket, a movable support and a movable support, wherein the interlocking bracket is provided with a movable cavity extending along the front-back direction; the piston is slidably and rotatably arranged in the movable cavity, a first sliding groove is formed in the side wall of the movable cavity, a first sliding block which can slidably extend into the first sliding groove is arranged on the piston, the first sliding groove comprises a first groove section extending in the front-back direction and a second groove section which is connected with the front end of the first groove section and forms an included angle with the first groove section, the piston has a locking angle and an unlocking angle, the first sliding block is located in the first groove section when the piston is at the locking angle, and the first sliding block is located in the second groove section when the piston is at the unlocking angle; the spring bolt can drive the piston to rotate so as to switch the piston between a locking angle and an unlocking angle, the spring bolt is connected with the piston when the piston is at the locking angle, and the spring bolt is separated from the piston when the piston is at the unlocking angle; a reset member that applies a rearward force to the piston.

According to the door lock assembly provided by the embodiment of the invention, the piston can be driven to rotate in the movable cavity through the lock tongue, so that the piston can be switched between the locking angle and the unlocking angle, once the piston enters the locking angle under the action of the lock tongue, the lock tongue is connected with the piston, and meanwhile, the piston slides backwards along the first groove section under the action of the resetting piece, so that the lock tongue is driven to slide backwards, and further, the automatic door closing of the cooking appliance is realized (the lock tongue is generally arranged on a door body of the cooking appliance). Therefore, the door can be automatically closed only by driving the piston to rotate to the locking angle through the lock tongue, so that the door body is labor-saving when being closed. When the door body is opened, external force is applied to enable the lock tongue to pull the piston to slide forwards until the first sliding block on the piston slides into the second groove section from the first groove section, at the moment, the piston enters an unlocking angle, and the lock tongue is separated from the piston, so that the door body is opened. Therefore, in the process of opening the door body, only the pulling force of the reset piece on the piston needs to be overcome, and the force required for opening the door body can be reduced to a certain extent.

In addition, the door lock assembly according to the embodiment of the invention may further have the following additional technical features:

in some embodiments of the present invention, a second sliding groove is disposed on one of the piston and the lock tongue, a second sliding block which can extend into the second sliding groove and slide in the second sliding groove is disposed on the other of the piston and the lock tongue, the second sliding groove includes a third groove section which is disposed obliquely with respect to the front-rear direction and a fourth groove section which is connected to an end of the third groove section and has an included angle with the third groove section, the second sliding block can drive the piston to rotate with respect to the lock tongue when sliding in the third groove section, and the lock tongue is restricted from moving in the front-rear direction with respect to the piston when the second sliding block is located in the fourth groove section.

In some embodiments of the present invention, the door lock assembly further comprises a damper, one end of which is connected to the rear end of the piston, and the other end of which is connected to the interlock bracket.

In some embodiments of the invention, the damper comprises: a damping body; a link that is extendable and retractable relative to the damping body, the link and the damping body having a rotational degree of freedom therebetween, the damping body having a damping effect on the link only when the link is retracted; the connecting rod is arranged at the end part of the connecting rod and is connected with the piston through the connecting head; and the damping body is fixed on the interlocking bracket by the mounting seat.

In some embodiments of the present invention, the reset member is a spring, the spring is sleeved on the damper, one end of the spring is connected to the connector, and the other end of the spring is connected to the mounting seat.

In some embodiments of the invention, the interlock bracket includes a bracket body and a cover plate that is snap-fit connected to the bracket body to form the active chamber.

In some embodiments of the present invention, the number of the first sliding grooves is multiple, the multiple first sliding grooves are uniformly arranged along the circumferential direction of the movable cavity, and the number of the first sliding blocks is the same as that of the first sliding grooves, and the first sliding blocks and the first sliding grooves correspondingly extend into the first sliding grooves one to one.

In some embodiments of the present invention, the second sliding grooves are a plurality of second sliding grooves and are uniformly arranged along the circumferential direction, and the second sliding blocks and the second sliding grooves have the same number and can correspondingly extend into the second sliding grooves.

In some embodiments of the present invention, the door lock assembly further comprises a micro switch disposed on the interlocking bracket and a transmission member rotatably mounted to the interlocking bracket, the micro switch being triggered by the transmission member when the piston slides to the rear end of the movable chamber.

In some embodiments of the invention, the transmission comprises: a mounting portion rotatably connected with the interlock bracket; with installation department fixed connection's first support arm and second support arm, first support arm with the contained angle has between the second support arm, the piston backward motion just promotes during the first support arm, the driving medium for the interlock support rotates, thereby makes the swing of second support arm is in order to trigger micro-gap switch.

A second aspect of the present invention proposes a cooking appliance comprising: the door lock comprises a box body, a door body and the door lock assembly in any one of the embodiments, wherein the interlocking bracket is installed on the box body, and the bolt is installed on the door body.

According to the cooking appliance, the bolt of the door lock assembly is mounted on the door body, the interlocking support is mounted on the box body, the piston can be driven to rotate in the movable cavity through the bolt, so that the piston can be switched between the locking angle and the unlocking angle, once the piston enters the locking angle under the action of the bolt, the bolt is connected with the piston, and meanwhile, the piston slides backwards along the first groove section under the action of the resetting piece, so that the bolt is driven to slide backwards, and the automatic door closing of the cooking appliance is achieved. Therefore, the door can be automatically closed only by driving the piston to rotate to the locking angle through the lock tongue, so that the door body is labor-saving when being closed. When the door body is opened, the bolt can pull the piston to slide forwards through external force until the first sliding block on the piston slides into the second groove section from the first groove section, at the moment, the piston enters an unlocking angle, and the bolt is separated from the piston, so that the door body is opened. Because the door body is opened the process and only need overcome the pulling force of piece to the piston that resets, can reduce the required power of opening the door body to a certain extent like this.

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. Like reference numerals refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic structural view of a door lock assembly of an embodiment of the present invention;

FIG. 2 is an exploded schematic view of a door lock assembly of an embodiment of the present invention;

FIG. 3 is a schematic view of a door lock assembly according to an embodiment of the present invention with the door body open;

FIG. 4 is a schematic view of the door lock assembly of an embodiment of the present invention with the door body closed;

FIG. 5 is a schematic view of a piston of an embodiment of the present invention;

FIG. 6 is a schematic structural view of a reset element and a damper according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a cooking appliance according to an embodiment of the present invention.

The reference symbols in the drawings denote the following:

100: a door lock assembly;

10: interlocking bracket, 101: stent body, 102: cover plate, 11: active cavity, 111: lock hole, 12: first chute, 121: first groove section, 122: a second groove section;

20: piston, 21: first slider, 22: second chute, 221: third groove section, 222: a fourth groove section;

30: bolt, 31: a second slider;

40: a reset member;

50: damper, 51: damping body, 52: connecting rod, 53: connector, 54: a mounting seat;

60: a microswitch;

70: a transmission member, 71: mounting portion, 72: first arm, 73: a second support arm;

80: a screw;

200: a cooking appliance;

210: a box body;

220: a door body.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may 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 disclosure 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.

As shown in fig. 1 to 4, an embodiment of the first aspect of the present invention provides a door lock assembly 100 for a cooking appliance, the door lock assembly 100 including an interlock bracket 10, a piston 20, a latch 30, and a reset piece 40. Wherein, be equipped with the activity chamber 11 that extends along fore-and-aft direction on interlocking support 10, piston 20 slidable and rotationally set up in activity chamber 11, be equipped with first spout 12 on the lateral wall in activity chamber 11, be equipped with the first slider 21 that stretches into first spout 12 slidable on piston 20. The first chute 12 includes a first slot segment 121 extending in the front-rear direction and a second slot segment 122 connected to a front end of the first slot segment 121 and having an angle with the first slot segment 121. The piston 20 has a locking angle and an unlocking angle, the first slider 21 is located in the first groove section 121 when the piston 20 is at the locking angle, and the first slider 21 is located in the second groove section 122 when the piston 20 is at the unlocking angle. The latch 30 can drive the piston 20 to rotate, so that the piston 20 can be switched between a locking angle and an unlocking angle, the latch 30 is connected with the piston 20 when the piston 20 is at the locking angle, and the latch 30 is separated from the piston 20 when the piston 20 is at the unlocking angle. Restoring member 40 applies a rearward force to piston 20.

According to the door lock assembly 100 of the embodiment of the invention, the piston 20 can be driven to rotate in the movable cavity 11 through the latch 30, so that the piston 20 can be switched between the locking angle and the unlocking angle, once the piston 20 enters the locking angle under the action of the latch 30, the latch 30 is connected with the piston 20, and at the same time, the piston 20 slides backwards along the first groove section 121 under the action of the resetting member 40, so that the latch 30 is driven to slide backwards, and thus the automatic door closing of the cooking appliance is realized (the latch 30 is generally arranged on a door body of the cooking appliance). Therefore, as long as the piston 20 is driven to rotate to the locking angle by the bolt 30, the door can be automatically closed, so that the door body is labor-saving when being closed.

When the door body is opened, an external force is applied to enable the bolt 30 to pull the piston 20 to slide forwards until the first sliding block 21 on the piston 20 slides into the second groove section 122 from the first groove section 121, at the moment, the piston 20 enters an unlocking angle, and the bolt 30 is separated from the piston 20, so that the door body is opened. Therefore, in the process of opening the door body, only the pulling force of the reset piece 40 on the piston 20 needs to be overcome, so that the force required for opening the door body can be reduced to a certain extent.

The front direction refers to the direction in which the opening of the box body of the cooking appliance faces, and the direction opposite to the front direction is the back direction.

In some embodiments of the present invention, as shown in fig. 5, a second sliding groove 22 is disposed on the piston 20, a second sliding block 31 capable of extending into the second sliding groove 22 and sliding in the second sliding groove 22 is disposed on the locking tongue 30, the second sliding groove 22 includes a third groove section 221 disposed obliquely with respect to the front-rear direction and a fourth groove section 222 connected to an end of the third groove section 221 and having an angle with the third groove section 221, the fourth groove section 222 is located at a rear end of the third groove section 221, the second sliding block 31 can drive the piston 20 to rotate with respect to the locking tongue 30 when sliding in the third groove section 221, and the locking tongue 30 is limited in movement in the front-rear direction with respect to the piston 20 when the second sliding block 31 is located in the fourth groove section 222, so as to achieve connection between the locking tongue 30 and the piston 20.

When the electrical cooking appliance performs a door closing action, the latch 30 moves backwards under the driving of the door body, so as to enter the movable cavity 11, and the second slider 31 on the latch 30 slides into the third slot section 221 of the second sliding slot 22, because the third slot section 221 is disposed obliquely with respect to the front-back direction, the second slider 31 drives the piston 20 to rotate when the third slot section 221 slides, so that the first slider 21 on the piston 20 slides from the second slot section 122 to the first slot section 121, that is, the piston 20 is switched from the unlocking angle to the locking angle. And, when the piston 20 rotates to the locking angle, the second slider 31 slides from the third groove section 221 to the fourth groove section 222, at this time, the movement of the latch 30 relative to the piston 20 in the front-rear direction is limited, and the latch 30 and the piston 20 are connected. Then, under the action of resetting element 40, piston 20 can drive bolt 30 to move backward, thereby closing the door body.

When the electrical cooking appliance performs a door opening action, the door body drives the latch 30 to move forward under the action of an external force until the first slider 21 on the piston 20 slides to the foremost end of the first groove section 121, at this time, the movement of the piston 20 in the rotation direction is not limited any more, so that the latch 30 rotates relative to the latch 30, the first slider 21 slides into the second groove section 122, at this time, the second slider 31 on the latch 30 slides into the third groove section 221 from the fourth groove section 222, the movement of the latch 30 relative to the piston 20 in the front-back direction is not limited any more, and the latch 30 is separated from the piston 20.

In other embodiments of the present invention, the second chute 22 and the second slider 31 can also be shifted, namely: the second sliding groove 22 is disposed on the latch tongue 30, the second slider 31 is disposed on the piston 20, and the second sliding groove 22 includes a third groove section 221 disposed to be inclined with respect to the front-rear direction and a fourth groove section 222 connected to an end of the third groove section 221 and having an angle with the third groove section 221, and the fourth groove section 222 is located at a front end of the third groove section 221.

When the cooking appliance performs a door closing action, the latch 30 moves backwards under the driving of the door body, so that the second slider 31 on the piston 20 can enter the third groove section 221 of the second chute 22 on the latch 30, because the third groove section 221 is arranged obliquely relative to the front-back direction, the second slider 31 drives the piston 20 to rotate when sliding in the third groove section 221, so that the piston 20 is switched from the unlocking angle to the locking angle, and when the piston rotates to the locking angle, the second slider 31 slides from the third groove section 221 to the fourth groove section 222, at this time, the movement of the latch 30 relative to the piston 20 in the front-back direction is limited, and the latch 30 and the piston 20 are connected. Then, under the action of resetting element 40, piston 20 can drive bolt 30 to move backward, thereby closing the door body.

When the electrical cooking appliance performs a door opening action, the door body drives the latch 30 to move forward under the action of an external force until the first slider 21 on the piston 20 slides to the foremost end of the first groove section 121, at this time, the movement of the piston 20 in the rotation direction is not limited any more, so that the latch 30 rotates relative to the latch 30, the first slider 21 slides into the second groove section 122, at this time, the second slider 31 on the piston 20 slides into the third groove section 221 from the fourth groove section 222, the movement of the latch 30 relative to the piston 20 in the front-back direction is not limited any more, and the latch 30 is separated from the piston 20.

In some embodiments of the present invention, the first slider 21 and the second slider 31 are cylindrical sliders so as to be able to smoothly slide in the first slide groove 12 and the second slide groove 22.

In some embodiments of the present invention, the door lock assembly 100 further includes a damper 50, one end of the damper 50 is connected to the rear end of the piston 20, and the other end of the damper 50 is connected to the interlock bracket 10, so that when the cooking appliance performs a door closing action, the speed of the backward movement of the tongue 30 and the piston 20 is slowed down by the damper 50, thereby preventing the door body and the cabinet from being collided with each other when the door is closed, further eliminating the collision noise when the door is closed, and improving the user experience.

In some embodiments of the present invention, as shown in fig. 6, the damper 50 includes: a damper body 51; a link 52 which can extend and contract relative to the damping body 51, a rotational degree of freedom is provided between the link 52 and the damping body 51, and the damping body 51 has a damping effect on the link 52 only when the link 52 retracts; a connector 53 disposed at an end of the connecting rod 52, the connecting rod 52 being connected to the piston 20 through the connector 53; and a mounting seat 54, wherein the mounting seat 54 fixes the damping body 51 to the interlocking bracket 10. In the present embodiment, the damper 50 is a one-way damper that is only active when the link 52 is retracted, such that the damper 50 is only active when the door lock assembly 100 performs a door closing action, but is not active when a door opening action is performed, thereby ensuring relative labor savings in the door opening process.

Further, the damper 50 may be a hydraulic damper, a pneumatic damper, or the like.

In some embodiments of the present invention, the restoring element 40 is a spring, specifically, the spring may be sleeved on the damper 50, one end of the spring is connected to the connecting head 53 and has a rotational freedom with the connecting head 53, and the other end of the spring is connected to the mounting seat 54. The spring is sleeved on the damper 50, so that the axes of the spring, the damper 50 and the piston 20 are overlapped, and the spring and the damper 50 can be in an optimal acting path, namely, the spring efficiency is highest and the damping effect of the damper 50 is best.

In some embodiments of the present invention, the interlocking bracket 10 includes a bracket main body 101 and a cover plate 102, the cover plate 102 is snap-fit connected to the bracket main body 101 to form the movable chamber 11, and specifically, the cover plate 102 can be connected to the bracket main body 101 by a fastener such as a screw 80.

In some embodiments of the present invention, the number of the first sliding grooves 12 is multiple, the multiple first sliding grooves 12 are uniformly distributed along the circumferential direction of the movable cavity 11, and the number of the first sliding blocks 21 is the same as that of the first sliding grooves 12, and the first sliding blocks 21 and the first sliding grooves 12 correspondingly extend into the first sliding grooves 12 one by one, so that the piston 20 is ensured to be uniformly stressed in the process of rotating relative to the movable cavity 11, and the trend that the axis of the piston 20 deviates from the axis of the movable cavity 11 due to uneven stress is avoided. Specifically, for example, the number of the first chutes 12 may be two, and in this case, the angular interval between the two first chutes 12 is 180 °, so that the force uniformity of the piston 20 can be better ensured.

In some embodiments of the present invention, the plurality of second sliding grooves 22 are uniformly arranged along the circumferential direction, and the number of the second sliding blocks 31 is the same as that of the second sliding grooves 22, and the second sliding blocks 31 can correspondingly extend into the second sliding grooves 22, so that it can be ensured that the piston 20 is uniformly stressed in the process that the locking tongue 30 drives the piston 20 to rotate. Specifically, for example, the number of the second chutes 22 may be two, and in this case, the angular interval between the two second chutes 22 is 180 °, so that the force uniformity of the piston 20 can be better ensured.

In some embodiments of the present invention, the door lock assembly 100 further includes a micro switch 60 and a transmission member 70, the micro switch 60 is disposed on the interlocking bracket 10, the transmission member 70 is rotatably mounted on the interlocking bracket 10, the micro switch 60 is triggered by the transmission member 70 when the piston 20 slides to the rear end of the movable cavity 11, the micro switch 60 sends a trigger signal when being triggered, and the cooking appliance can confirm that the door body is closed and locked by the trigger signal. The state (closed or opened) of the door body can be confirmed by providing the micro switch 60, and thus safety control is realized.

In some embodiments of the present invention, transmission 70 comprises: a mounting portion 71, a first arm 72 and a second arm 73, wherein the mounting portion 71 is rotatably connected to the interlock bracket 10, the first arm 72 and the second arm 73 are both fixedly connected to the mounting portion 71, and an included angle is formed between the first arm 72 and the second arm 73, and when the piston 20 moves backward and pushes the first arm 72, the transmission member 70 rotates relative to the interlock bracket 10, so that the second arm 73 swings to trigger the microswitch 60. When the piston 20 moves forward, the piston 20 releases the force on the first arm 72 and, correspondingly, the second arm 73 releases the pressure on the microswitch 60 and the microswitch 60 is released from the trigger state.

In some embodiments of the present invention, a locking hole 111 is disposed at a front end of the movable chamber 11, and the locking hole 111 is used for allowing the locking tongue 30 to enter and exit the movable chamber 11.

As shown in fig. 7, an embodiment of the second aspect of the present invention proposes a cooking appliance 200, which includes: the door lock assembly 100 includes a case 210, a door 220, and any of the above embodiments, wherein the interlocking bracket 10 is mounted to the case 210, and the latch 30 is mounted to the door 220.

According to the cooking appliance 200 of the embodiment of the present invention, the latch of the door lock assembly 100 is mounted on the door 220, the interlocking bracket 10 is mounted on the cabinet 210, and the piston 20 can be driven to rotate in the movable chamber 11 by the latch 30, so that the piston 20 can be switched between the locking angle and the unlocking angle, once the piston 20 enters the locking angle under the action of the latch 30, the latch 30 is connected with the piston 20, and at the same time, the piston 20 slides backwards along the first groove section 121 under the action of the resetting member 40, so as to drive the latch 30 to slide backwards, thereby achieving the automatic door closing of the cooking appliance. Therefore, as long as the piston 20 is driven to rotate to the locking angle by the bolt 30, the door can be automatically closed, so that the door body is labor-saving when being closed. When the door body is opened, the bolt 30 can pull the piston 20 to slide forward through an external force until the first slider 21 on the piston 20 slides into the second groove section 122 from the first groove section 121, and at this time, the piston 20 enters an unlocking angle, and the bolt 30 is separated from the piston 20, so that the door body is opened. Because the door body opening process only needs to overcome the pulling force of the reset piece 40 to the piston 20, the force required for opening the door body can be reduced to a certain extent.

Further, there may be one or more door lock assemblies 100 on the cooking appliance 200, and when there are more door lock assemblies 100, the door lock assemblies 100 are arranged at intervals.

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. A door lock assembly (100) for a cooking appliance, wherein the door lock assembly (100) comprises:

the interlocking device comprises an interlocking support (10), wherein a movable cavity (11) extending along the front-back direction is arranged on the interlocking support (10);

the piston (20) is slidably and rotatably arranged in the movable cavity (11), a first sliding groove (12) is formed in the side wall of the movable cavity (11), a first sliding block (21) which can slidably extend into the first sliding groove (12) is arranged on the piston (20), the first sliding groove (12) comprises a first groove section (121) extending along the front-back direction and a second groove section (122) which is connected with the front end of the first groove section (121) and has an included angle with the first groove section (121), the piston (20) has a locking angle and an unlocking angle, the first sliding block (21) is located in the first groove section (121) when the piston (20) is at the locking angle, and the first sliding block (21) is located in the second groove section (122) when the piston (20) is at the unlocking angle;

a lock tongue (30), wherein the lock tongue (30) can drive the piston (20) to rotate, so that the piston (20) can be switched between a locking angle and an unlocking angle, the lock tongue (30) is connected with the piston (20) when the piston (20) is in the locking angle, and the lock tongue (30) is separated from the piston (20) when the piston (20) is in the unlocking angle;

a reset member (40), said reset member (40) applying a rearward force to said piston (20).

2. The door lock assembly (100) of claim 1, wherein a second runner (22) is provided on one of the piston (20) and the bolt (30), a second sliding block (31) which can extend into the second sliding groove (22) and slide in the second sliding groove (22) is arranged on the other one of the piston (20) and the bolt (30), the second sliding chute (22) comprises a third chute section (221) which is obliquely arranged relative to the front-back direction and a fourth chute section (222) which is connected with the end part of the third chute section (221) and forms an included angle with the third chute section (221), the second sliding block (31) can drive the piston (20) to rotate relative to the bolt (30) when sliding in the third groove section (221), the bolt (30) is restricted from movement in a forward and rearward direction relative to the piston (20) when the second slider (31) is located in the fourth slot section (222).

3. The door lock assembly (100) according to claim 1, further comprising a damper (50), one end of the damper (50) being connected to a rear end of the piston (20), the other end of the damper (50) being connected to the interlock bracket (10).

4. The door lock assembly (100) according to claim 3, wherein the damper (50) comprises:

a damping body (51);

a link (52) that is extendable and retractable relative to the damping body (51), the link (52) and the damping body (51) having a rotational degree of freedom therebetween, the damping body (51) having a damping effect on the link (52) only when the link (52) is retracted;

the connecting rod (52) is connected with the piston (20) through the connecting head (53);

a mounting seat (54), the mounting seat (54) fixing the damping body (51) to the interlocking bracket (10).

5. The door lock assembly (100) according to claim 4, wherein the reset member (40) is a spring, the spring is sleeved on the damper (50), one end of the spring is connected with the connector (53), and the other end of the spring is connected with the mounting seat (54).

6. The door lock assembly (100) according to any one of claims 1 to 5, wherein the interlocking bracket (10) comprises a bracket body (101) and a cover plate (102), the cover plate (102) being snap-fitted to the bracket body (101) so as to form the movable chamber (11).

7. The door lock assembly (100) according to any one of claims 1 to 5, wherein the first sliding grooves (12) are provided in plurality, the first sliding grooves (12) are uniformly arranged along the circumferential direction of the movable cavity (11), and the first sliding blocks (21) and the first sliding grooves (12) are provided in the same number and extend into the first sliding grooves (12) in a one-to-one correspondence manner.

8. The door lock assembly (100) according to claim 2, wherein the second sliding grooves (22) are a plurality of sliding blocks and are uniformly arranged along the circumferential direction, and the second sliding blocks (31) and the second sliding grooves (22) are the same in number and can correspondingly extend into the second sliding grooves (22).

9. The door lock assembly (100) according to any one of claims 1 to 5, further comprising a micro switch (60) and a transmission member (70), wherein the micro switch (60) is disposed on the interlocking bracket (10), the transmission member (70) is rotatably mounted to the interlocking bracket (10), and the micro switch (60) is triggered by the transmission member (70) when the piston (20) slides to the rear end of the movable chamber (11).

10. The door lock assembly (100) according to claim 9, wherein the transmission member (70) comprises:

a mounting portion (71), the mounting portion (71) rotatably connected with the interlock bracket (10);

with installation department (71) fixed connection's first support arm (72) and second support arm (73), first support arm (72) with contained angle has between second support arm (73), piston (20) backward motion and promotion during first support arm (72), driving medium (70) for interlock support (10) rotate, thereby make second support arm (73) swing is in order to trigger micro-gap switch (60).

11. A cooking appliance (200), characterized in that it comprises: a cabinet (210), a door body (220), and the door lock assembly (100) according to any one of claims 1 to 10, wherein the interlocking bracket (10) is mounted to the cabinet (210), and the latch bolt (30) is mounted to the door body (220).