CN114961444B

CN114961444B - Interlocking device of microwave oven and microwave oven

Info

Publication number: CN114961444B
Application number: CN202210623205.XA
Authority: CN
Inventors: 位帅帅; 吴延岐
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: 2022-06-01
Filing date: 2022-06-01
Publication date: 2023-11-24
Anticipated expiration: 2042-06-01
Also published as: CN114961444A

Abstract

The invention discloses an interlocking device of a microwave oven and the microwave oven, the interlocking device comprises: a first door hook; an interlocking bracket; the first lever is rotatably arranged on the interlocking bracket; the buffer energy storage assembly is arranged on the interlocking bracket, the first door hook is suitable for moving along the door closing direction so as to drive the first lever to rotate along the first direction, and the first lever is propped against the buffer energy storage assembly so as to enable the buffer energy storage assembly to store energy; the door opening assembly is used for triggering the first door hook to move along the door opening direction so as to drive the first lever to rotate along a second direction opposite to the first direction, and the buffering energy storage assembly is also used for releasing stored energy in the door opening process so as to drive the first lever to rotate along the second direction. According to the interlocking device of the microwave oven, disclosed by the embodiment of the invention, through arranging the buffer energy storage component and the door opening component, the door closing noise is reduced, the door opening operation of a user is more labor-saving and convenient, and the use experience of the user is greatly improved.

Description

Interlocking device of microwave oven and microwave oven

Technical Field

The present invention relates to the technical field of microwave ovens, and more particularly, to an interlock device of a microwave oven and a microwave oven.

Background

In the related art, in the interlocking of a microwave oven switch door, the door closing noise is large, and the manual door opening operation is laborious and inconvenient.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide an interlock device for a microwave oven, which can reduce door opening noise and facilitate and save labor in opening a door.

Another object of the present invention is to provide a microwave oven having the above-mentioned interlock device.

According to an embodiment of the invention, an interlock device for a microwave oven includes: a first door hook; an interlocking bracket; the first lever is rotatably arranged on the interlocking bracket; the buffer energy storage assembly is arranged on the interlocking bracket, the first door hook is suitable for moving along the door closing direction so as to drive the first lever to rotate along the first direction, and the first lever is propped against the buffer energy storage assembly so as to enable the buffer energy storage assembly to store energy; the door opening assembly is used for triggering the first door hook to move along the door opening direction so as to drive the first lever to rotate along a second direction opposite to the first direction, and the buffering energy storage assembly is also used for releasing stored energy in the door opening process so as to drive the first lever to rotate along the second direction.

According to the interlocking device of the microwave oven, disclosed by the embodiment of the invention, through arranging the buffer energy storage component and the door opening component, the door closing noise is reduced, the door opening operation of a user is more labor-saving and convenient, and the use experience of the user is greatly improved.

In addition, the interlocking device of the microwave oven according to the above embodiment of the present invention may further have the following additional technical features:

according to some embodiments of the invention, the door opening assembly comprises: a mounting base; the key is arranged on the mounting seat in a pressing manner; the transmission piece is rotatably arranged on the mounting seat, the key is suitable for moving along the pressing direction and driving the transmission piece to rotate, so that the transmission piece abuts against the first door hook and drives the first door hook to move along the opening direction.

According to some embodiments of the invention, the mounting seat is provided with a guide hole, the key is provided with a guide post penetrating through the guide hole, and one end of at least one guide post, which is close to the transmission piece, is provided with a stop convex part so as to prevent the guide post from falling off.

According to some embodiments of the invention, the transmission comprises: the rotating shaft is in rotatable fit with the mounting seat; the first transmission part and the second transmission part, the button be suitable for with first transmission part offsets, the second transmission part be used for with first door colludes the offset, first transmission part is located the downside of pivot, the second transmission part is located the pivot keep away from the one side of button.

According to some embodiments of the invention, the first door hook is provided with a door opening protrusion, and the door opening assembly is suitable for being propped against the door opening protrusion to drive the first door hook to move.

According to some embodiments of the invention, the buffering energy storage component comprises a spring plate, one end of the spring plate is connected with the interlocking bracket, the first lever is propped against the other end of the spring plate, and the spring plate can be elastically deformed to store energy.

According to some embodiments of the invention, in the door-open state, the elastic sheet is an arc sheet protruding toward the first lever; or, the elastic sheet is a strip-shaped sheet body.

According to some embodiments of the invention, a line connecting the abutment of the buffer energy storage component and the rotation axis of the first lever is a line segment ab, and in a door-closed state, the driving force of the buffer energy storage component to the first lever is along the direction of the line segment ab or located on the leading side of the line segment ab along the second direction.

According to some embodiments of the invention, in the door-closed state, an included angle between the driving force of the buffering energy storage assembly to the first lever and the line segment ab is less than or equal to 5 °.

According to some embodiments of the invention, the first lever comprises: the first door hook is suitable for being abutted against the first driving arm to drive the first lever to rotate along the first direction; in the door opening process, the first door hook abuts against the second driving arm to drive the first lever to rotate along the second direction.

According to some embodiments of the invention, the interlock further comprises: the elastic piece is connected with the interlocking support and the first lever and is provided with a first driving state for driving the first lever to rotate along the first direction and a second driving state for driving the first lever to rotate along the second direction, and in the door closing process, the first door hook is suitable for being abutted against the first driving arm so that the elastic piece is switched from the second driving state to the first driving state.

According to some embodiments of the invention, the interlock bracket is provided with a monitoring switch, and the first lever is adapted to be rotated in the first direction to trigger the monitoring switch.

According to some embodiments of the invention, the interlocking bracket is further provided with a first micro switch, a second micro switch and a second lever, the second lever is rotatably installed on the interlocking bracket, and the first door hook sequentially drives the first lever and the second lever to rotate in the door closing process, so that after the first lever triggers the monitoring switch, the second lever sequentially triggers the first micro switch and the second micro switch.

The microwave oven according to the embodiment of the invention comprises: the door body is arranged on the machine body; according to the interlocking device of the microwave oven, the first door hook is arranged on the door body, and the interlocking bracket and the door opening assembly are arranged on the machine body.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a partial schematic structure view of a microwave oven according to an embodiment of the present invention, in which a door body is in a door-closed state;

FIG. 2 is a right side view of FIG. 1, wherein the mount is not shown;

FIG. 3 is a left side view of FIG. 2;

fig. 4 and 5 are schematic structural views of fig. 2;

FIG. 6 is a right side view of FIG. 1, wherein the switch assembly and cover are not shown;

FIG. 7 is a schematic diagram of the structure of FIG. 6;

fig. 8 is a partial right side view of a microwave oven according to an embodiment of the present invention, in which a driving member is just in contact with a first door hook;

FIG. 9 is a left side view of FIG. 8;

fig. 10 and 11 are schematic structural views of fig. 8;

Fig. 12 is a partial right side view of a microwave oven according to an embodiment of the present invention, in which a driving member drives a first door hook to move a distance in a door opening direction;

FIG. 13 is a left side view of FIG. 12;

fig. 14 and 15 are schematic structural views of fig. 12;

fig. 16 is a partial right side view of a microwave oven according to an embodiment of the present invention, in which a driving member is disengaged from a first door hook during a door opening process;

FIG. 17 is a schematic view of the structure of FIG. 16;

fig. 18 is a partial right view of a microwave oven according to an embodiment of the present invention, in which a door body is in a door-opened state;

FIG. 19 is a schematic view of the structure of FIG. 18;

FIG. 20 is a right side view of FIG. 18, wherein the mount is not shown;

FIG. 21 is a schematic view of the structure of FIG. 21;

FIG. 22 is a right side view of FIG. 18, wherein the switch assembly and cover are not shown;

fig. 23 is a left side view of fig. 22;

fig. 24 is a right side view of the bracket body and the second lever according to the embodiment of the present invention;

FIG. 25 is a left side view of FIG. 24;

fig. 26 is a schematic structural view of a bracket body and a second lever according to an embodiment of the present invention;

FIG. 27 is an exploded view of FIG. 26;

fig. 28 is a schematic structural view of a stent body according to an embodiment of the present invention;

FIG. 29 is a schematic structural view of a switch assembly according to an embodiment of the present invention;

FIG. 30 is an exploded view of FIG. 29;

fig. 31 is a right side view of fig. 29;

FIGS. 32 and 33 are schematic structural views of a transmission member according to an embodiment of the present invention;

FIG. 34 is a right side view of a transmission according to an embodiment of the present invention;

fig. 35 and 36 are schematic structural views of a first lever according to an embodiment of the present invention;

fig. 37 and 38 are schematic structural views of a second lever according to an embodiment of the present invention.

Reference numerals:

a microwave oven 1000; an interlock 100; a door body 200; a first door hook 11; a door opening protrusion 111; a second door hook 12;

an interlocking bracket 20; a monitor switch 201; a first microswitch 202; a second micro switch 203; a mounting space 204; a slot 205; an anti-drop portion 206; a limiting part 21; a holder body 22; a third through hole 221; a first mounting post 222; a second mounting post 223; a cover 23; a first through hole 231; a second through hole 232; a baffle 24;

a first lever 30; a first surface 301; a second surface 302; a third surface 303; a first drive arm 31; a second drive arm 32; a first driving section 33; an elastic member 34; a connection portion 35; thinned region 39;

a second lever 40; a first rotating arm 41; a second rotating arm 42; a third rotating arm 43; a second driving section 44;

a buffer energy storage assembly 50; a spring piece 51; an anti-drop fitting portion 511; a flange 52; a driving member 53; a sloping block 54;

A door opening assembly 60; a mounting base 61; a guide hole 611; a key 62; guide posts 621; a stopper protrusion 622; a transmission member 63; a rotation shaft 631; a first transmission portion 632; a second transmission 633.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

In the description of the invention, "a first feature" may include one or more such features, and "a plurality" may mean two or more, and that a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, or may include both the first and second features not being in direct contact but being in contact with each other through additional features therebetween, with the first feature "above", "over" and "above" the second feature including both the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature.

An interlock apparatus 100 of a microwave oven 1000 and a microwave oven 1000 having the same according to an embodiment of the present invention are described below with reference to the accompanying drawings.

Referring to fig. 1 to 23, a microwave oven 1000 according to an embodiment of the present invention may include a body, a door 200, and an interlock device 100 of the microwave oven 1000 according to an embodiment of the present invention. The door body 200 is mounted on the machine body, for example, rotatably mounted on the machine body, so as to realize opening and closing of the accommodating cavity of the machine body, and realize switching between a door opening state and a door closing state of the door body 200. The interlock device 100 can be switched to implement a corresponding function according to the state of the door body 200.

The interlock device 100 of the microwave oven 1000 according to an embodiment of the present invention may include: the door lock comprises a first door hook 11, an interlocking bracket 20 and a first lever 30.

Specifically, the first door hook 11 may be mounted to the door body 200 to move relative to the machine body according to the opening and closing operation of the door body 200. The interlock bracket 20 is mounted to the body, and the first lever 30 is rotatably mounted to the interlock bracket 20. So that the first door hook 11 can be matched with the interlocking bracket 20, the first lever 30 on the interlocking bracket 20 and other parts in the process of moving relative to the machine body.

For example, according to some embodiments of the present invention, the interlock 100 may also include a cushioned door closing assembly. The damper door closing assembly is mounted to the interlocking bracket 20 and is connected to the first lever 30. In the door closing process, the first door hook 11 can move along the door closing direction (e.g. backward movement shown in fig. 1) to drive the first lever 30 to rotate along the first direction (e.g. counterclockwise direction), and the buffering door closing assembly can apply buffering force opposite to the first direction to the first lever 30, so as to realize the door closing buffering effect, avoid severe collision between the door body 200 and the machine body in the door closing process, and also facilitate reducing door closing noise.

The invention does not limit the specific structure of the buffer door closing component, and only needs to be satisfied to play a role in buffering door closing. For example, the damper door closing assembly may include a damper, a spring plate 51, a compression spring, or the like.

In some embodiments, the cushioned door closing assembly includes a cushion member and a connector member. Wherein, the one end and the interlocking support 20 rotatable coupling of bolster, the connecting piece respectively with the other end and the rotatable coupling of first actuating arm 31 of bolster to make first lever 30 rotate the in-process, the bolster can play the cushioning effect, but rotatable connection structure then makes can adapt to the rotation of first lever 30, avoids taking place the card and dies.

In other embodiments, as shown in fig. 1-17, the cushioned door closing assembly also has an energy storage function to form a cushioned energy storage assembly 50. Specifically, the first door hook 11 can move along the door closing direction to drive the first lever 30 to rotate along the first direction (e.g. counterclockwise), and the first lever 30 abuts against the buffer energy storage assembly 50, so that the buffer energy storage assembly 50 stores energy, and the buffer energy storage assembly 50 has both a buffer function and an energy storage function. During the door opening process, the buffer energy storage assembly 50 can release the stored energy to drive the first lever 30 to rotate in a second direction (e.g. clockwise) opposite to the first direction, so that the first lever 30 can drive the first door hook 11 to move in the door opening direction (e.g. forward as shown in fig. 1), thereby playing a role of boosting the door.

Therefore, the buffer energy storage assembly 50 not only can play a buffering role in the door closing process so as to reduce door closing noise, but also can drive the door body 200 to be opened in the door opening process so as to play a role in boosting and opening the door, and can greatly improve the user operation convenience in the door opening process so as to save more labor in operation.

In some embodiments of the present invention, as shown in fig. 1-17 and 29-31, the interlocking device 100 further includes a door opening assembly 60, and the door opening assembly 60 may be mounted on the machine body, so that the door opening assembly 60 triggers the first door hook 11 in a door-closed state. The door opening assembly 60 is used for triggering the first door hook 11 to move along the door opening direction, so that the first door hook 11 drives the first lever 30 to switch from the stationary state to start rotating along the second direction, and simultaneously the buffer energy storage assembly 50 can drive the first lever 30 to rotate, thereby realizing boosting door opening, and the user can operate the door opening assembly 60 more effort-saving. From this, compare with hand-operated door, the user opens the door through the subassembly 60 that opens the door and operates more convenient laborsaving, and the subassembly 60 that opens the door can cooperate with buffering energy storage assembly 50 in order to further improve the convenience of opening the door, and the use is experienced better.

According to the interlocking device 100 of the microwave oven 1000 provided by the embodiment of the invention, through the arrangement of the buffer energy storage component 50 and the door opening component 60, the door closing noise is reduced, the door opening operation of a user is more labor-saving and convenient, and the use experience of the user is greatly improved.

Since the interlocking device 100 of the microwave oven 1000 according to the embodiment of the invention has the beneficial technical effects described above, the microwave oven 1000 according to the embodiment of the invention reduces the door closing noise and enables the door opening operation of the user to be more labor-saving and convenient by arranging the buffer energy storage assembly 50, thereby greatly improving the use experience of the user.

It should be noted that, the specific structure of the door opening assembly 60 may be flexibly set according to practical situations. For example, door opening assembly 60 may include keys 62 to enable one-touch opening; or can comprise a transmission structure such as a lever and the like so as to save more labor in door opening operation; or may include electromagnetic structures to assist in opening doors using magnetic forces, etc.

Door opening assembly 60 according to some embodiments of the present invention is described below with reference to the accompanying drawings.

According to some embodiments of the present invention, as shown in fig. 29-31, the door opening assembly 60 includes a mounting block 61, a key 62, and a transmission 63. The mounting seat 61 may be provided on the machine body, for example, the mounting seat 61 may be formed as a part of a housing of the machine body, so that the door opening assembly 60 is exposed, and the machine body has an attractive appearance. The key 62 is provided on the mount 61 so as to be pressed, and the transmission member 63 is rotatably mounted on the mount 61. When the key 62 is pressed, the key can move along the pressing direction and drive the transmission member 63 to rotate, so that the transmission member 63 abuts against the first door hook 11 and drives the first door hook 11 to move along the door opening direction.

The movement of the key 62 along the pressing direction can be converted into the movement of the first door hook 11 along the opening direction through the transmission piece 63, so that the reversing is realized, and the pressing difficulty of the key 62 can be reduced through reasonable arrangement of the structure of the transmission piece 63, so that the pressing is more labor-saving.

For example, as shown in fig. 8-17, when the door needs to be opened, the user can press the key 62 to move the key 62 backward while abutting against the transmission member 63, so as to drive the transmission member 63 to rotate counterclockwise; the transmission member 63 can be abutted against the first door hook 11 during the counterclockwise rotation process, so as to drive the first door hook 11 to move forward and drive the door body 200 to open. Meanwhile, in the process that the transmission member 63 drives the first door hook 11 to move, the buffer energy storage assembly 50 releases the stored energy to drive the first lever 30 to rotate clockwise and drive the first door hook 11 to move forward, and the first door hook 11 moves under the combined action of the buffer energy storage assembly 50 and the transmission member 63 so as to realize semi-automatic door opening.

In some embodiments, as shown in fig. 29-31, the mounting seat 61 is provided with a guide hole 611, the key 62 is provided with a guide post 621, and the guide post 621 penetrates through the guide hole 611 to guide the movement of the key 62, so that the key 62 moves smoothly and is not easy to be blocked. In addition, when the key 62 moves along the pressing direction, the driving piece 63 can be driven to rotate by the cooperation of the guide post 621 and the driving piece 63, so that the structure of the key 62 is simplified.

It should be noted that the number of the guide posts 621 may be one or more, and the guide holes 611 may be disposed in one-to-one correspondence with the guide posts 621. Also, the cross-sectional shape of the guide post 621 perpendicular to the pressing direction may be any shape such as a circle, a triangle, and a square, and the cross-sectional shape of the guide hole 611 is matched with the cross-section of the guide post 621 to prevent the guide post 621 from rotating or shaking in the guide hole 611.

In addition, in some embodiments, as shown in fig. 30, at least one guide post 621 may be provided with a stop protrusion 622 near an end of the transmission member 63, where the stop protrusion 622 has a size larger than that of the guide hole 611 to prevent the guide post 621 from being pulled out of the guide hole 611, and to limit the reset of the key 62 during the door opening process.

In some embodiments, the key 62 is provided with four guide posts 621, the four guide posts 621 are arranged in the left-right direction, the cross section of the two guide posts 621 positioned in the middle is circular, and the cross section of the two guide posts 621 positioned at the two sides is square. And the rear ends of the two guide posts 621 located at both sides are provided with stopper protrusions 622 extending away from each other so that the two guide posts 621 are formed as snap buttons. In the assembly process, the two guide posts 621 located at two sides can be close to each other to deform, so that the stop protruding portions 622 can pass through the corresponding guide holes 611, and after being clamped, the stop protruding portions 622 are far away from each other to recover deformation so as to realize clamping with the corresponding guide holes 611, so that the keys 62 are prevented from being separated, and meanwhile, the two guide posts 621 located in the middle can pass through the corresponding guide holes 611. In the process of pressing the key 62, the two middle guide posts 621 abut against the transmission member 63 to drive the transmission member 63 to rotate through the two force application points, so that the transmission member 63 rotates smoothly.

According to some embodiments of the present invention, as shown in fig. 29 to 34, the transmission member 63 includes a rotation shaft 631, a first transmission portion 632, and a second transmission portion 633. The rotating shaft 631 is rotatably matched with the mounting seat 61, so that the transmission member 63 can rotate around the axis of the rotating shaft 631. The first transmission portion 632 is located at the lower side of the rotation shaft 631, and the second transmission portion 633 is located at the side of the rotation shaft 631 away from the key 62, as shown at the rear side in fig. 31. The key 62 can be abutted against the first transmission portion 632, and the second transmission portion 633 is used for being abutted against the first door hook 11.

Therefore, in the process of pressing the key 62, the key 62 abuts against the first transmission portion 632, so that the first transmission portion 632 rotates, and the second transmission portion 633 rotates along with the first transmission portion 632 to push the first door hook 11, so as to drive the door to open. When the pressing force to the key 62 is withdrawn, since the first transmission part 632 is located at the lower side of the rotating shaft 631, and the second transmission part 63 is located at one side of the rotating shaft 631 away from the key 62, the whole gravity center of the transmission part 63 is located at one side of the rotating shaft 631 away from the key 62, under the action of gravity, the transmission part 63 can reversely rotate to reset to the initial position which is not pressed, and a structure for driving reset is not required to be additionally arranged, so that the door opening assembly 60 has a simple structure, is sensitive in reset and is not easy to fail. In addition, in the door closing process, the key 62 is not pressed, so that the transmission member 63 is not in contact with the first door hook 11, interference to movement of the first door hook 11 and the door body 200 is avoided, and the door is closed more labor-saving.

Of course, according to actual needs, an elastic structure such as a spring or an elastic plate may be provided to drive the transmission member 63 to return.

In some embodiments of the present invention, as shown in fig. 8-15, the first door hook 11 is provided with a door opening protrusion 111, and the door opening assembly 60 can abut against the door opening protrusion 111 to drive the first door hook 11 to move, so that the matching structure of the first door hook 11 and the door opening assembly 60 is stable and reliable. For example, the second transmission portion 633 of the transmission member 63 can abut against the rear side of the door opening protrusion 111 to drive the first door hook 11 to move forward, so as to open the door.

A buffered energy storage assembly 50 according to some embodiments of the present invention is described below in conjunction with the accompanying drawings.

In some embodiments of the present invention, as shown in fig. 6-8 and 11-17, the buffering and energy storage assembly 50 may include a spring plate 51, one end of the spring plate 51 is connected to the interlocking bracket 20, the first lever 30 abuts against the other end of the spring plate 51, and the spring plate 51 may be elastically deformed to store energy.

In the door closing process, the first lever 30 rotates along the first direction and presses the other end of the elastic sheet 51, so that the bending degree of the elastic sheet 51 is increased, energy is accumulated, and a buffering effect and an energy storage effect are achieved; in the door opening process, the elastic sheet 51 can release the stored energy to apply a driving force to the first lever 30 to rotate along the second direction, so that the first lever 30 can push the first door hook 11 and the door body 200 to move towards the door opening direction, and the door opening is assisted. The buffering energy storage component 50 is simple in structure, can be used repeatedly, is not easy to cause fatigue damage, and is long in service life.

It should be noted that, the structure of the elastic sheet 51 may be flexibly set according to practical situations. For example, the elastic sheet 51 may be an arc sheet or a strip sheet, which only needs to meet the requirement that the elastic sheet 51 can be elastically deformed when being stressed and can be recovered after the external force is removed.

The strip-shaped sheet body is simpler in structure and easier to process, and the consistency and universality of the structure of the elastic sheet 51 are easily ensured. The arc-shaped sheet body can be of an arc-shaped structure protruding towards the first lever 30, so that when the first lever 30 extrudes the elastic sheet 51, the elastic sheet 51 is easier to mount and elastically deforms in a required direction, the movement process is more ordered, and friction resistance between the first lever 30 and the elastic sheet 51 is reduced.

In some embodiments, referring to fig. 6, the other end of the elastic piece 51 may be provided with a turned-out edge 52 extending away from the first lever 30, and the turned-out edge 52 is in smooth transition connection with the elastic piece 51, so that in the process of rotating the first lever 30, the abutting part of the elastic piece 51 and the first lever 30 is in a smooth structure, for example, the abutting part of the first lever 30 and the smooth transition connection part of the elastic piece 51 and the turned-out edge 52 abuts against, so as to avoid the overlarge friction resistance caused by the abutting of the sharp edge and the first lever 30, and ensure the smoothness of the rotation of the first lever 30.

According to some embodiments of the present invention, one end of the elastic piece 51 may be fixedly connected to the interlocking bracket 20, so as to ensure that the elastic piece 51 is stably connected to the interlocking bracket 20 in the process of repeated elastic deformation of the elastic piece 51, and the elastic piece 51 is not easy to loose, so that the buffering and boosting door opening functions are affected.

For example, referring to fig. 6, the interlocking bracket 20 may be provided with a slot 205, one end of the elastic piece 51 may be inserted into the slot 205, and when the elastic piece 51 is elastically deformed by the plug-in connection structure, the one end of the elastic piece 51 may abut against the slot wall of the slot 205 to limit, and the elastic piece 51 may be stably deformed.

In some embodiments, as shown in fig. 6, the slot 205 may be provided with a release preventing portion 206, and one end of the elastic piece 51 may be provided with a release preventing mating portion 511, for example, one end of the elastic piece 51 may form an L-shaped bending structure. The anti-disengagement portion 511 is located in the slot 205, and the anti-disengagement portion 206 abuts against the anti-disengagement portion 511 to prevent the anti-disengagement portion 511 from being disengaged from the slot 205, so as to prevent the elastic sheet 51 from being disengaged from the interlocking bracket 20.

According to some embodiments of the present invention, in the door-closed state, the direction of the driving force of the elastic piece 51 acting on the first lever 30 is directed to the rotation center or the vicinity of the rotation center of the first lever 30, and at this time, the elastic piece 51 does not provide a component force or only provides a small component force in the rotation direction of the first lever 30, so that the door body 200 can be tightly closed.

According to some embodiments of the present invention, as shown in fig. 6, the abutment of the buffer energy storage assembly 50 against the first lever 30 is a, the rotation axis of the first lever 30 is b, and the connection line between the abutment a and the rotation axis b is a line segment ab.

In some embodiments, in the door-closed state, the driving force F of the buffer energy storage assembly 50 to the first lever 30 is directed along the line section ab, that is, the driving force F is directed to the rotation axis of the first lever 30, so that the component force of the driving force F in the rotation direction of the first lever 30 is zero, and the first lever 30 cannot rotate under the action of the buffer energy storage assembly 50, so as to ensure that the door body 200 can be stably maintained in the closed state.

In other embodiments, the driving force F of the buffer energy storage assembly 50 to the first lever 30 is located on the leading side of the line segment ab along the second direction. In other words, the driving force F is directed to the lower side of the rotation axis of the first lever 30, and in other words, the driving force F is a force for rotating the first lever 30 in the second direction, so that when other external forces to the first lever 30 are removed, for example, when the first door hook 11 removes the acting force to the first lever 30, the driving force F can drive the first lever 30 to rotate in the second direction, so as to ensure that the boosting door opening effect is achieved.

In some embodiments, as shown in fig. 6, in the door closed state, the driving force F of the buffer energy storage assembly 50 to the first lever 30 has an angle α with the line segment ab, and α is less than or equal to 5 °. In the above-mentioned angle range, the driving force F is directed near the rotation center of the first lever 30, so that the buffer energy storage assembly 50 provides only a small component force in the rotation direction of the first lever 30, so as to ensure that the door body 200 can be stably maintained in the closed state.

In order to further ensure that the door body 200 can be stably closed and the buffer energy storage assembly 50 and the first lever 30 are not easy to be blocked, according to some embodiments of the present invention, as shown in fig. 35 and 36, a side surface of the first lever 30 facing the buffer energy storage assembly 50 is a step surface, and the step surface includes a first surface 301, a second surface 302 and a third surface 303, where the first surface 301, the second surface 302 and the third surface 303 are sequentially and smoothly connected. Wherein the second surface 302 extends away from the cushioned energy storage assembly 50 such that the stepped surface is generally zigzagged.

As shown in fig. 6, in the closed door state, the buffer energy storage assembly 50 may stop against the junction of the first surface 301 and the second surface 302. On one hand, the driving force of the buffer energy storage assembly 50 to the first lever 30 is closer to the rotation axis of the first lever 30, and on the other hand, the third surface 303 can be matched with the buffer energy storage assembly 50, so that the influence on normal door closing caused by reverse rotation due to overlarge rotation angle of the first lever 30 along the first direction is avoided.

According to some embodiments of the present invention, as shown in fig. 1-23, the interlocking bracket 20 may be provided with a switch member that may be triggered to implement a responsive function when the first lever 30 is rotated in a first direction. For example, the switch member may be the monitor switch 201, and the open/close state of the door 200 may be monitored by rotating the first lever 30 in the first direction to trigger the monitor switch 201.

According to some embodiments of the present invention, as shown in fig. 1-23 and 37-38, the interlock device 100 may further include a second lever 40, the second lever 40 being rotatably mounted to the interlock bracket 20. The interlocking bracket 20 is provided with a plurality of switch pieces (two or more), and the first door hook 11 can sequentially drive the first lever 30 and the second lever 40 to rotate during the door closing process so as to sequentially trigger the plurality of switch pieces. Specifically, after the first lever 30 sequentially activates its corresponding switch, the second lever 40 sequentially activates its corresponding switch.

For example, as shown in fig. 1 to 23, three switch elements, namely a monitor switch 201, a first micro switch 202 and a second micro switch 203, are disposed on the interlocking bracket 20. Alternatively, the monitor switch 201 may be a micro switch. When the monitoring switch 201, the first micro switch 202 and the second micro switch 203 are triggered in sequence, it is determined that the door 200 is closed, and the microwave oven 1000 can be normally powered on and operated.

In the related art, the micro-switch layout mode adopted by the microwave oven is that the primary micro-switch is controlled by the upper door hook of the movable door hook when the door is closed, and the secondary micro-switch is indirectly controlled and the micro-switch is monitored by the lower door hook. However, in the above manner of triggering the micro-switches, the triggering sequence of the micro-switches is disordered in the door closing process, so that the microwave oven has potential safety hazards or the service life is affected.

In the embodiment of the present invention, as shown in fig. 1 to 23, the first lever 30 is rotatably mounted to the interlocking bracket 20, and the second lever 40 is rotatably mounted to the interlocking bracket 20. In the process of closing the door of the microwave oven 1000, the first door hook 11 moves relative to the interlocking bracket 20 and drives the first lever 30 and the second lever 40 to rotate in sequence, so that after the first lever 30 triggers the monitoring switch 201, the second lever 40 triggers the first micro switch 202 and the second micro switch 203 in sequence.

Therefore, the sequential transmission of the monitoring switch 201, the first micro switch 202 and the second micro switch 203 is realized through the driving of the same door hook (namely, the driving of the first door hook 11) and the sequential transmission of the two levers (namely, the first lever 30 and the second lever 40), so that the problem that the triggering sequence of a plurality of switch pieces is disordered is avoided, the accurate detection of the opening and closing state of the door body 200 is ensured, the circuit damage of the microwave oven 1000 is avoided, even the safety accident is caused, and the service life of the microwave oven 1000 is prolonged.

For example, the door body 200 is rotatably mounted to the machine body about a rotation axis 631 extending vertically, and the door body 200 rotates to move the first door hook 11 generally backward and forward in the front-rear direction as shown in fig. 1 with respect to the interlock bracket 20 during the closing of the door. During the moving process, the first door hook 11 first contacts with the first lever 30 on the interlocking bracket 20 and drives the first lever 30 to rotate along the first direction (anticlockwise direction as shown in fig. 1), and when the first lever 30 rotates to a preset angle, the first lever 30 triggers the monitoring switch 201. Then, the first door hook 11 contacts with the second lever 40 and drives the second lever 40 to rotate along the second direction (clockwise as shown in fig. 1), the first micro switch 202 is triggered when the second lever rotates to the first preset angle, and the second micro switch 203 is triggered when the second lever continues to rotate to the second preset angle. Thereby, sequential activation of the monitor switch 201, the first micro switch 202 and the second micro switch 203 is achieved.

It should be noted that, in the whole rotation process of the first lever 30 and the second lever 40, the first door hook 11 may be completely driven to rotate, or the first door hook 11 may provide an initial acting force to start rotating, and then rotate under the driving of other structures, which is within the scope of the present invention.

In addition, in some embodiments, the door body 200 of the microwave oven 1000 may further include a second door hook 12, for example, as shown in fig. 1-23, the first door hook 11 is a lower door hook, the second door hook 12 is an upper door hook, and the lower door hook is disposed on the lower side of the upper door hook. Of course, the door hook can also comprise a third door hook or more door hooks, and the plurality of door hooks are vertically and alternately distributed. In the embodiment comprising a plurality of door hooks, the first door hook 11 is matched with the two levers to indirectly trigger the three switch pieces, so that the switching order of the three switch pieces is ensured.

The first door hook 11 may be a fixed door hook, i.e. fixed relative to the door body 200, so that the first door hook 11 is stable in position and structure in the process of driving the first lever 30 and the second lever 40 to rotate, thereby avoiding affecting the orderly triggering of the micro switch due to the change of the position of the first door hook 11; the second door hook 12, the third door hook, and other door hooks may be fixed door hooks or movable door hooks, for example, door hooks rotatably or movably mounted to the door body 200.

According to the interlocking device 100 of the microwave oven 1000 in the embodiment of the invention, through the driving of the first door hook 11 and the orderly transmission of the first lever 30 and the second lever 40, the monitoring switch 201, the first micro switch 202 and the second micro switch 203 are sequentially triggered, the problem that the triggering sequence of a plurality of switch pieces is disordered is avoided, the accurate detection of the opening and closing state of the door body 200 is ensured, the circuit damage of the microwave oven 1000 is avoided, even the safety accident is avoided, and the service life of the microwave oven 1000 is prolonged.

According to some embodiments of the present invention, as shown in fig. 1-23, the rotating shaft 631 of the first lever 30 is disposed on a side of the rotating shaft 631 of the second lever 40, which is close to the first door hook 11, for example, as shown in fig. 6 and 12, the rotating shaft 631 of the first lever 30 is disposed on a front side of the rotating shaft 631 of the second lever 40, and the first door hook 11 is disposed on a front side of the rotating shaft 631 of the first lever 30, so that the first door hook 11 moves backward during the door closing process, and can contact with the first lever 30 first and then contact with the second lever 40, thereby avoiding the triggering disorder of the switch element.

According to some embodiments of the present invention, as shown in fig. 1 to 23, the rotation shaft 631 of the first lever 30 and the rotation shaft 631 of the second lever 40 are respectively located at both sides of the first door hook 11 perpendicular to the door closing direction. For example, as shown in fig. 6 and 12, the rotation shaft 631 of the first lever 30 is located at the upper side of the first door hook 11, and the rotation shaft 631 of the second lever 40 is located at the lower side of the first door hook 11. The arrangement mode ensures that the arrangement and rotation of the first lever 30 and the second lever 40 are not interfered with each other, the arrangement of the first lever 30 and the second lever 40 in the door closing direction (front and rear direction) is more compact, the length of the first door hook 11 can be in contact transmission with the first lever 30 and the second lever 40 without overlong arrangement, and the structure of the interlocking device 100 is more compact.

The specific structure of the first lever 30 according to some embodiments of the present invention is described below with reference to the accompanying drawings.

In some embodiments of the present invention, as shown in fig. 35-36, the first lever 30 may include a first driving arm 31, and in embodiments including a switching member, the first driving arm 31 is provided with a first driving portion 33, and the first driving portion 33 is used to trigger the switching member. As shown in fig. 1 to 7, during the door closing process, the first door hook 11 may abut against the first driving arm 31 to drive the first driving arm 31 to rotate around the rotation axis of the first lever 30 along the first direction, so as to squeeze the buffering energy storage assembly 50 to store energy. And the first driving part 33 can be driven to rotate, so that the first driving part 33 can rotate to a position for triggering the monitoring switch 201, and the monitoring switch 201 is opened.

The position of the first driving portion 33 on the first driving arm 31 may be flexibly set according to the actual situation such as the spatial arrangement. For example, the first driving portion 33 may be provided at any position such as a middle portion or an end portion of the first driving arm 31 in the longitudinal direction of the first driving arm 31.

In some embodiments, the first driving portion 33 may be a protrusion disposed on one side of the first driving arm 31 along the axial direction, so that the first driving portion 33 is not interfered by the first driving arm 31 during the process of matching with the monitoring switch 201, and the risk of the first driving arm 31 touching the monitoring switch 201 by mistake is avoided.

In some embodiments of the present invention, as shown in fig. 35 to 36, the first lever 30 may further include a second driving arm 32, and the second driving arm 32 may be located at a side of the first driving arm 31 near the first door hook 11, in other words, the first driving arm 31 is located at a leading side of the second driving arm 32 in the first direction.

During the door closing process, the first door hook 11 can extend between the first driving arm 31 and the second driving arm 32, so that the first door hook 11 can abut against the first driving arm 31 and drive the first lever 30 to start rotating along the first direction. In the door opening process, the first door hook 11 can be abutted against the second driving arm 32 to drive the first lever 30 to rotate along the second direction, the second direction is opposite to the first direction, the direction of the driving force of the buffer energy storage assembly 50 on the first lever 30 is changed, the buffer energy storage assembly 50 can fully release energy, a good boosting door opening effect is achieved, the first lever 30 can be disengaged from the monitoring switch 201, and the monitoring switch 201 can be closed.

Thus, the first door hook 11 can be used to drive the first lever 30 to rotate in two directions to trigger the monitor switch 201 and reset, which is beneficial to simplifying the structure of the interlock device 100. Of course, the structure for driving the first lever 30 to reset includes, but is not limited to, that the second driving arm 32 cooperates with the first door hook 11, for example, in other embodiments, a reset member such as a spring may be further provided to drive the first lever 30 to rotate in the second direction for reset after the first door hook 11 moves in the door opening direction.

According to some embodiments of the present invention, as shown in fig. 1-23, the interlock device 100 may further include an elastic member 34, the elastic member 34 connecting the interlock bracket 20 and the first lever 30. For example, the elastic member 34 may be a coil spring, and the coil spring may be one or more. For example, in the example shown in fig. 1 to 23, the elastic members 34 are tension springs, and as shown in fig. 36, the first lever 30 is provided with a connecting portion 35, and the connecting portion 35 is a protrusion provided on a side surface of the first lever 30 facing away from the first driving portion 33. One end of each tension spring is connected with the interlocking bracket 20, the other end is connected with the connecting part 35, and one ends of the two tension springs are spaced apart by a certain distance.

Further, the elastic member 34 has a first driving state. In the first driving state, the elastic member 34 applies a driving force to the first lever 30 to rotate in the first direction, so that the second driving arm 32 drives the first door hook 11 to move in the door closing direction.

Specifically, as shown in fig. 1 to 7, during the door closing process, the first door hook 11 moves in the door closing direction, moves between the first driving arm 31 and the second driving arm 32 and abuts against the first driving arm 31, so as to drive the first lever 30 to start to rotate in the first direction; when the first lever 30 starts to rotate in the first direction or rotates by a small angle, the elastic member 34 is in the first driving state to automatically drive the first lever 30 to rotate in the first direction, so that the second driving arm 32 drives the first door hook 11 to move continuously in the door closing direction, and an automatic door closing effect is achieved. At this time, even if the user withdraws the door closing force to the door body 200, the door body 200 can be guaranteed to be closed in place, and the first door hook 11 can be guaranteed to move to the three switch pieces in the door closing direction to be triggered. On the one hand, the operation of the user is labor-saving and convenient, and on the other hand, the problem that the door is not closed in place can be avoided.

In some embodiments, as shown in fig. 18-23, the resilient member 34 has a second driving state. In the second driving state, the elastic member 34 applies a driving force to the first lever 30 to rotate in the second direction. During the closing process, the first hook 11 can abut against the first driving arm 31, so that the elastic member 34 is switched from the second driving state to the first driving state.

Specifically, in the door opening state, under the action of the elastic member 34, the first lever 30 can be kept at a desired position, so that on one hand, the first lever 30 is prevented from rotating along the first direction to trigger the monitoring switch 201 by mistake under the condition that the first door hook 11 is not acted on, and on the other hand, smooth movement between the first driving arm 31 and the second driving arm 32 during the door closing process of the first door hook 11 can be ensured, and the first lever 30 is prevented from rotating to influence the cooperation of the first door hook 11 and the first lever 30. And the first door hook 11 and the first driving arm 31 are propped against each other to drive the first lever 30 to rotate along the first direction, so that the elastic piece 34 can timely switch the driving state along with the rotation of the first lever 30, and the elastic piece 34 can timely drive the door closing.

In the door closing state, the elastic member 34 is in the first driving state, so that the first lever 30 can be abutted against the first door hook 11 through the second driving arm 32, and the door body 200 is ensured to be kept in the door closing state. When the door needs to be opened, the user controls the first door hook 11 to move along the opening direction and to abut against the second driving arm 32, so that the first lever 30 rotates along the second direction. When the first lever 30 rotates to a certain angle, the elastic member 34 is switched from the first driving state to the second driving state, so that the elastic member 34 can drive the first lever 30 to rotate along the second direction, and the resistance to the first door hook 11 is timely relieved, so that the door body 200 can be easily opened.

In some embodiments of the present invention, as shown in fig. 35-36, the length of the second driving arm 32 may be smaller than the length of the first driving arm 31, so that the first door hook 11 is easier to move between the first driving arm 31 and the second driving arm 32 during the door closing process, and interference of the second driving arm 32 to the movement of the first door hook 11 is avoided.

In some embodiments of the present invention, as shown in fig. 35-36, the thickness of the second driving arm 32 is smaller than the thickness of the first driving arm 31 in the axial direction of the first lever 30, and the thickness difference makes the gap between the second driving arm 32 and the interlocking bracket 20 larger than the gap between the first driving arm 31 and the interlocking bracket 20. In the door closing process, even if the second driving arm 32 causes certain interference to the movement of the first door hook 11 along the door closing direction, the first door hook 11 is easy to move between the first driving arm 31 and the second driving arm 32 through the second driving arm 32 or the deformation of the first door hook 11, and the first door hook 11 and the first driving arm 31 are not easy to deform, so that the first door hook 11 moves to one side of the first driving arm 31 plate far away from the second driving arm 32, and the stability of the cooperation of the first door hook 11 and the first lever 30 is ensured.

In addition, in some embodiments, as shown in fig. 35 to 36, a thinned area 39 is provided on one side surface of the second driving arm 32 in the axial direction of the first lever 30, so that when the first lever 30 is mounted on the interlocking bracket 20, a certain gap can be formed between the second driving arm 32 and the interlocking bracket 20 where the thinned area 39 is provided. When the first lever 30 is touched by mistake and rotates to a position triggering the monitoring switch 201 along the first direction, the first door hook 11 can be forced to pass through the gap by closing the door and move between the first driving arm 31 and the second driving arm 32, and then the first door hook 11 can drive the first lever 30 to rotate and reset along the second direction by opening the door.

For example, as shown in fig. 1-23, the interlocking bracket 20 includes a bracket body 22 and a cover 23, the first lever 30 is mounted between the bracket body 22 and the cover 23, and the thinned area 39 may be a notch groove provided on a side of the second driving arm 32 facing the bracket body 22, so that the gap is formed between the second driving arm 32 and the bracket body 22.

In addition, the thickness of the first door hook 11 may decrease in the door closing direction, so that the thickness of the rear end of the first door hook 11 is smaller and the thickness of the front end is larger as shown in fig. 1. In the state that the first lever 30 mistakenly triggers the monitoring switch 201, the front thick and rear thin structure of the first door hook 11 makes the first door hook 11 easier to move from the thinning area 39 to the position between the first driving arm 31 and the second driving arm 32, so that the problem of abnormal triggering is solved more easily.

According to some embodiments of the present invention, the interlocking bracket 20 may be provided with a stopper 21. In the door-closed state, the limiting portion 21 can abut against the first lever 30 to prevent the first lever 30 from rotating in the first direction. In other words, the limiting portion 21 can limit the limit position of the first lever 30 rotating along the first direction, so as to avoid damage to the monitor switch 201 or the first door hook 11 caused by an excessive rotation angle of the first lever 30.

For example, in the embodiment including the elastic member 34, the elastic member 34 drives the first lever 30 to rotate along the first direction, so as to drive the first door hook 11 to move along the door closing direction, thereby realizing an automatic door closing action; when the first lever 30 rotates to the position where the first lever 30 abuts against the limiting portion 21, the limiting effect of the limiting portion 21 makes the first lever 30 be stressed and balanced, and the first lever 30 does not continue to rotate under the driving of the elastic member 34, and can be kept at a position where the first lever 30 is stably matched with the first door hook 11, so that the door body 200 is kept in a door-closed state.

According to other embodiments of the present invention, the limiting of the first lever 30 can be directly achieved by the buffer energy storage assembly 50, and no other limiting structure is required, so as to simplify the structure of the interlocking device 100.

The second lever 40 according to some embodiments of the present invention is described below with reference to the accompanying drawings.

In some embodiments of the present invention, as shown in fig. 37 to 38, the second lever 40 includes: the first, second and third rotating arms 41, 42 and 43 are sequentially arranged in the second direction (clockwise direction as shown in fig. 6). As shown in fig. 1 to 7, in the door closing process, the first door hook 11 can be abutted against the first rotating arm 41 to drive the second lever 40 to rotate along the second direction, so as to drive the second rotating arm 42 and the third rotating arm 43 to rotate along the second direction, the second rotating arm 42 can trigger the first micro switch 202, and the third rotating arm 43 can trigger the second micro switch 203, so that one lever can drive the two micro switches to open in sequence.

In some embodiments, as shown in fig. 38, at least two of the first rotating arm 41, the second rotating arm 42 and the third rotating arm 43 are staggered along the axial direction of the second lever 40, so that the first rotating arm 41, the second rotating arm 42 and the third rotating arm 43 have smaller included angles along the second direction and are not easy to generate position interference, which is beneficial to making the structure of the interlocking device 100 in the moving direction of the first door hook 11 more compact.

For example, as shown in fig. 38, in the axial direction of the second lever 40, the first rotating arm 41, the second rotating arm 42 and the third rotating arm 43 are staggered, so that the three rotating arms are distributed in three layers in the axial direction, the corresponding first micro switch 202 and the second micro switch 203 can be arranged in two layers along the axial direction of the second lever 40, and the first door hook 11 can drive the second lever 40 from one side of the first rotating arm 41, thereby avoiding the interference of the first door hook 11, the first micro switch 202 and the second micro switch 203.

Further, as shown in fig. 24-28, the interlocking bracket 20 may be provided with a baffle 24, for example, the baffle 24 may be provided to the bracket body 22. In the axial direction of the second lever 40, the baffle 24 is located on the side of the first rotating arm 41 close to the second rotating arm 42 to limit the second lever 40 in the axial direction, so as to avoid the second lever 40 from being disengaged from the interlocking bracket 20. And, at least a portion of the baffle 24 is located at a side of the first rotating arm 41 near the door body 200, so as to shield and protect the first rotating arm 41, so as to avoid the problem that the first micro switch 202 and the second micro switch 203 are turned on by mistake when the small rod body is inserted into the interlocking bracket 20 by mistake to trigger the first rotating arm 41.

In some embodiments, the second rotating arm 42 may be provided with a second driving portion 44, so that the second rotating arm 42 and the first micro switch 202 can be at least partially staggered in the axial direction, so as to meet the space arrangement requirement.

According to some embodiments of the present invention, as shown in fig. 1-7, the interlocking bracket 20 may include a bracket body 22 and a cover 23, where the cover 23 covers the bracket body 22, so that the cover 23 cooperates with the bracket body 22 to define an installation space 204, and the first lever 30 and the second lever 40 are installed in the installation space 204 to limit the first lever 30 and the second lever 40, so as to ensure that the two levers can rotate stably and are not easily interfered or touched by other structures to affect normal operation.

As shown in fig. 1 to 7, the first door hook 11 may extend into the installation space 204 to contact with the first lever 30 and the second lever 40 in the door closing process, where the installation space 204 may also shield the coordination structure of the first door hook 11 and the lever, so as to ensure smooth driving, and may also play a guiding role on the first door hook 11, so as to ensure that the first door hook 11 can accurately contact with the first lever 30 and the second lever 40.

In some embodiments, as shown in fig. 24-28, the bracket body 22 may be provided with a first mounting post 222 and a second mounting post 223, the first lever 30 is sleeved on the first mounting post 222, and the second lever 40 is sleeved on the second mounting post 223. And, the ends of the first mounting column 222 and the second mounting column 223 are inserted into the cover 23, so as to limit the bracket body 22 and the cover 23 by being matched with the cover 23, and avoid the influence of dislocation or deformation of the cover 23 and the bracket body 22 on the trigger switch.

In addition, in some embodiments, as shown in fig. 1 to 23, the monitor switch 201 is disposed on a side of the cover 23 facing away from the bracket body 22, the cover 23 is provided with a first through hole 231, the first lever 30 is provided with a first driving portion 33, and the first driving portion 33 may pass through the first through hole 231 to extend to a side of the cover 23 facing away from the bracket body 22. During the rotation of the first lever 30, the first driving part 33 rotates in the first through hole 231, so as to trigger the monitor switch 201. The monitoring switch 201 can be arranged outside the installation space 204 to avoid position interference with components in the installation space 204, such as avoiding interference with a buffer door closing assembly, and the position arrangement is more reasonable.

With continued reference to fig. 1-23, the first micro-switch 202 is disposed on a side of the cover 23 facing away from the bracket body 22, and the second micro-switch 203 is disposed in the mounting space 204. The cover 23 may further have a second through hole 232, and the second lever 40 is provided with a second driving portion 44, and the second driving portion 44 may pass through the second through hole 232 to extend to a side of the cover 23 facing away from the bracket body 22. During the rotation of the second lever 40, the second driving portion 44 rotates within the second through hole 232, so as to trigger the first micro switch 202 located outside the installation space 204. And the portion of the second lever 40 located in the installation space 204 may trigger the second micro switch 203 located in the installation space 204. The first micro switch 202 and the second micro switch 203 are located on different sides of the cover 23 so that they do not interfere. For example, the projections of the first micro-switch 202 and the second micro-switch 203 along the axial direction of the second lever 40 may be at least partially overlapped, so that the arrangement of the two micro-switches is more compact, and the second lever 40 is faster to trigger the two micro-switches in turn.

The following detailed description of the microwave oven 1000 in accordance with one embodiment of the present invention refers to the accompanying drawings, it being understood that the following description is illustrative only and is not to be construed as limiting the invention.

As shown in fig. 1 to 28, a microwave oven 1000 according to an embodiment of the present invention includes a door body 200, a body, and an interlock device 100. The interlocking device 100 comprises a first door hook 11, a second door hook 12, an interlocking bracket 20, a first lever 30, a second lever 40, a monitoring switch 201, a first micro switch 202, a second micro switch 203, an elastic member 34, a buffer energy storage assembly 50, a door opening assembly 60, a driving member 53 and an inclined block 54.

The door body 200 is rotatably mounted on the machine body around a vertical axis, the first door hook 11 and the second door hook 12 are fixedly arranged on the door body 200, and the second door hook 12 is located above the first door hook 11. The interlocking bracket 20 is mounted to the machine body and includes a bracket body 22 and a cover 23 to define a mounting space 204. The first lever 30 and the second lever 40 are rotatably installed in the installation space 204, the first lever 30 includes a first driving arm 31, a second driving arm 32, and a first driving part 33, and the first driving part 33 passes through the first through hole 231 of the cover 23; the second lever 40 includes a first rotating arm 41, a second rotating arm 42, a third rotating arm 43, and a second driving portion 44, and the second driving portion 44 passes through the second through hole 232 of the cover 23. The second micro-switch 203 is disposed in the installation space 204, and the monitoring switch 201 and the first micro-switch 202 are disposed on a side of the cover 23 facing away from the bracket body 22. The bracket body 22 is provided with a third through hole 221, the elastic piece 34 is arranged on one side of the bracket body 22 facing away from the cover 23, and the connecting part 35 of the first lever 30 passes through the third through hole 221 to be connected with the elastic piece 34. The door opening assembly 60 includes a mounting seat 61, a key 62 and a transmission member 63, the mounting seat 61 is disposed on the right side of the interlocking bracket 20, the key 62 is disposed on the mounting seat 61 in a manner of being movable back and forth, and the transmission member 63 is a flip lever and is disposed on the rear side of the mounting seat 61. The first transmission portion 632 of the transmission member 63 abuts against the guide post 621 of the key 62, and the second transmission portion 633 extends into the installation space 204 of the interlocking bracket 20 so as to abut against the door opening protrusion 111 of the first door hook 11 when the door is opened.

In addition, the inclined block 54 is vertically movably mounted to the bracket body 22, and both ends of the driving member 53 respectively abut against the inclined block 54 and the bracket body 22 to apply an upward driving force to the inclined block 54.

As shown in fig. 18 to 23, in the door-open state, the first door hook 11 and the second door hook 12 are separated from the body. The driving member 53 drives the bevel block 54 to be positioned at a high position. The first lever 30 rotates to an extreme position propped against the edge of the bracket body 22 in a clockwise direction under the tensile force of the elastic piece 34, is disengaged from the monitoring switch 201, and is in an initial state, and the elastic piece 51 of the buffering energy storage assembly 50 is not used for storing energy; the second lever 40 is in a position separated from the first micro switch 202 and the second micro switch 203. The key 62 is at the initial position to be flush with the front surface of the mounting seat 61, the transmission member 63 is reset to the first transmission portion 632 to be abutted against the mounting seat 61, and the second transmission portion 633 is separated from the first door hook 11.

During the door closing process, the door body 200 is pushed to move the first door hook 11 and the second door hook 12 in the door closing direction, i.e., backward. The rear end of the first door hook 11 extends between the first driving arm 31 and the second driving arm 32 and abuts against the first driving arm 31 to push the first lever 30 to rotate in the anticlockwise direction; when the first lever 30 rotates by a preset angle, the pulling direction of the elastic piece 34 is switched to drive the first lever 30 to rotate in the anticlockwise direction, so that the second driving arm 32 of the first lever 30 automatically pulls the first door hook 11 to move backwards, and the elastic piece 51 is elastically deformed in the anticlockwise rotation process of the whole first lever 30, so that a buffering effect is achieved; the first lever 30 rotates to cause the first driving portion 33 to trigger the monitor switch 201; when the first door hook 11 moves to contact with the second lever 40, the second lever 40 is driven to rotate in a clockwise direction, and the second driving part 44 and the third rotating arm 43 of the second lever 40 trigger the first micro switch 202 and the second micro switch 203 in sequence. In the door closing process, the second door hook 12 abuts against the inclined block 54, the inclined block 54 compresses the driving piece 53 to enable the hook portion of the second door hook 12 to move to the rear side of the inclined block 54, and limiting of the inclined block 54 on the second door hook 12 is achieved to keep the door body 200 closed.

When the first lever 30 rotates to a certain extent, the elastic sheet 51 is bent and deformed, and the second lever 40 triggers the second micro switch 203 to stop rotating. At this time, under the tensile force of the elastic member 34, the second driving arm 32 of the first lever 30 stops the first door hook 11, so that the door body 200 is kept in the door-closed state, and the first lever 30 and the second lever 40 are kept in the positions where the monitoring switch 201, the first micro switch 202 and the second micro switch 203 are turned on. The second driving part 44 is not in contact with the first door hook 11 during the whole closing process.

In the door opening process, the key 62 is pressed backward, so that the transmission member 63 rotates counterclockwise, and the second driving part 44 abuts against the door opening protrusion 111 of the first door hook 11 to drive the first door hook 11 to move forward, and the door body 200 rotates reversely to open. In the moving process, firstly, the stopping force of the second lever 40 is withdrawn, and the second lever 40 rotates anticlockwise under the action of the rebound force of the first micro switch 202 and the second micro switch 203 so as to release the triggering of the first micro switch 202 and the second micro switch 203; the first door hook 11 also abuts against the second driving arm 32 during the moving process, so as to drive the first lever 30 to overcome the elastic force of the elastic piece 34 and rotate clockwise, so that the first driving part 33 releases the trigger to the monitoring switch 201, and the spring piece 51 releases the stored energy during the whole rotating process, so as to drive the first lever 30 to rotate clockwise; when the pulling direction of the elastic member 34 is switched to drive the first lever 30 to rotate clockwise, the first lever 30 automatically resets to a position against the edge of the bracket body 22 under the driving of the elastic member 34 and the elastic sheet 51 and stays at the position, and the first lever 30 can drive the first door hook 11 to move forward, so that the door body 200 is sprung. In the door opening process, the second door hook 12 is propped against the inclined block 54 again, the inclined block 54 compresses the driving piece 53 to enable the hook portion of the second door hook 12 to move to the front side of the inclined block 54, and the inclined block 54 contacts with the limit of the inclined block 54 on the second door hook 12, so that the door body 200 can be opened.

In summary, through first door collude 11 and two lever cooperation, trigger three switch piece respectively, the switch piece does not directly take place the direct contact with first door collude 11, and three switch piece can be according to monitor switch 201, first micro-gap switch 202, the orderly triggering of order of second micro-gap switch 203, has guaranteed the security of equipment. And the buffer energy storage assembly 50 is used for buffering the door closing through the first lever 30 in the door closing process, reducing the door closing noise, and driving the door body 200 to open through the first lever 30 in the door opening process, so as to play a role in boosting the door opening. The door opening assembly 60 can realize one-key door opening, is convenient and labor-saving to operate, and does not generate resistance to the door closing process.

Other constructions and operations of the microwave oven 1000 according to the embodiment of the present invention are known to those skilled in the art, and will not be described in detail herein.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the description herein, reference to the terms "embodiment," "specific embodiment," "example," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An interlock device for a microwave oven, comprising:

a first door hook;

an interlocking bracket;

the first lever is rotatably arranged on the interlocking bracket;

the buffer energy storage assembly is arranged on the interlocking bracket, the first door hook is suitable for moving along the door closing direction so as to drive the first lever to rotate along the first direction, and the first lever is propped against the buffer energy storage assembly so as to enable the buffer energy storage assembly to store energy;

The door opening assembly is used for triggering the first door hook to move along the door opening direction so as to drive the first lever to rotate along a second direction opposite to the first direction, wherein,

the buffering energy storage component is further used for releasing stored energy in the door opening process so as to drive the first lever to rotate along the second direction.

2. The interlock of a microwave oven as claimed in claim 1, wherein the door opening assembly comprises:

a mounting base;

the key is arranged on the mounting seat in a pressing manner;

the transmission piece is rotatably arranged on the mounting seat,

the key is suitable for moving along the pressing direction and driving the transmission member to rotate, so that the transmission member abuts against the first door hook and drives the first door hook to move along the door opening direction.

3. The interlocking device of claim 2, wherein the mounting base is provided with a guide hole, the key is provided with guide posts penetrating through the guide hole, and one end of at least one guide post, which is close to the transmission member, is provided with a stop protrusion for preventing the guide posts from falling out.

4. The interlock of a microwave oven as claimed in claim 2, wherein the driving part comprises:

The rotating shaft is in rotatable fit with the mounting seat;

the key is suitable for being abutted against the first transmission part, the second transmission part is used for being abutted against the first door hook,

the first transmission part is positioned at the lower side of the rotating shaft, and the second transmission part is positioned at one side of the rotating shaft far away from the key.

5. The interlock of claim 1 wherein the first door hook is provided with a door opening protrusion, and the door opening assembly is adapted to abut against the door opening protrusion to drive the first door hook to move.

6. The interlock device of claim 1 wherein the buffering and energy storing assembly comprises a spring plate, one end of the spring plate is connected to the interlock bracket, the first lever is abutted against the other end of the spring plate, and the spring plate is elastically deformable to store energy.

7. The interlocking device of a microwave oven as claimed in claim 6, wherein, in a door-opened state,

the elastic sheet is an arc sheet body protruding towards the first lever; or,

the elastic sheet is a strip-shaped sheet body.

8. The apparatus of claim 1, wherein the line connecting the stop of the buffer energy storage assembly and the rotation axis of the first lever is a line segment ab,

In the door closing state, the driving force of the buffering energy storage assembly to the first lever is along the direction of the line segment ab or is located on the leading side of the line segment ab along the second direction.

9. The interlock of claim 8 wherein the angle between the driving force of the buffer energy storage assembly to the first lever and the line segment ab is less than or equal to 5 ° in the closed door state.

10. The interlock of a microwave oven as claimed in claim 1, wherein the first lever comprises: the first driving arm and the second driving arm are positioned at one side of the first driving arm close to the first door hook,

the first door hook is suitable for being propped against the first driving arm to drive the first lever to rotate along the first direction; in the door opening process, the first door hook abuts against the second driving arm to drive the first lever to rotate along the second direction.

11. The interlock for a microwave oven as claimed in claim 10, further comprising:

the elastic piece is connected with the interlocking bracket and the first lever and is provided with a first driving state for driving the first lever to rotate along the first direction and a second driving state for driving the first lever to rotate along the second direction,

In the door closing process, the first door hook is suitable for being abutted against the first driving arm so that the elastic piece is switched from the second driving state to the first driving state.

12. The interlock device of a microwave oven according to any one of claims 1 to 11, wherein the interlock bracket is provided with a monitoring switch, and the first lever is adapted to be rotated in the first direction to trigger the monitoring switch.

13. The apparatus of claim 12, wherein the interlocking bracket is further provided with a first micro switch, a second micro switch, and a second lever rotatably installed to the interlocking bracket,

the first door hook sequentially drives the first lever and the second lever to rotate in the door closing process, so that after the first lever triggers the monitoring switch, the second lever sequentially triggers the first micro switch and the second micro switch.

14. A microwave oven, comprising:

the door body is arranged on the machine body;

the interlock apparatus of a microwave oven according to any one of claims 1 to 13, wherein the first door hook is installed to the door body, and the interlock bracket and the door opening assembly are installed to the body.