CN108413449B

CN108413449B - Door hook component, door opening and closing detection system and household appliance

Info

Publication number: CN108413449B
Application number: CN201810264310.2A
Authority: CN
Inventors: 房华伟; 包捷
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: 2018-03-28
Filing date: 2018-03-28
Publication date: 2020-07-07
Anticipated expiration: 2038-03-28
Also published as: CN108413449A

Abstract

The invention discloses a door hook component, a door opening and closing detection system and a household appliance, wherein the door hook component comprises: a main body; the first touch part is connected with the main body and can move between a first release position and a first trigger position relative to the main body, and the first touch part is suitable for triggering the corresponding first detection part at the first trigger position; the first reset piece is arranged on the main body and drives the first touch piece to the first trigger position; and the second touch part is connected with the main body and is suitable for triggering the corresponding second detection part, wherein the connection strength of the first touch part and the main body is lower than that of the second touch part and the main body. According to the door hook assembly provided by the embodiment of the invention, the triggering time of the first detection piece and the triggering time of the second detection piece of the door hook assembly are different.

Description

Door hook component, door opening and closing detection system and household appliance

Technical Field

The invention relates to the field of household appliances, in particular to a door hook component, a door opening and closing detection system with the door hook component and a household appliance with the door opening and closing detection system.

Background

According to the design standard, the time difference between the primary switch action and the monitoring switch action work interval must be more than 10 ms. If the interval time is too short or the sequence is reversed, a circuit short circuit and a fuse are burnt. And the door hook component in the related art is of an integrated structure, so that when a door body is opened or closed, the sequence of the primary microswitch and the monitoring switch is difficult to be strictly ensured, and the condition of short circuit of a circuit is easy to occur.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

To this end, the present invention proposes a door hook assembly for a household appliance, the first and second detection members of which have different triggering times.

The invention also provides a door opening and closing detection system which is provided with the door hook assembly.

The invention also provides a household appliance, and the microwave oven is provided with the door opening and closing detection system.

A door hook assembly according to an embodiment of the first aspect of the invention comprises: a main body; the first touch part is connected with the main body and can move between a first release position and a first trigger position relative to the main body, and the first touch part is suitable for triggering a corresponding first detection part at the first trigger position; the first reset piece is arranged on the main body and drives the first touch piece to the first trigger position normally; and the second touch part is connected with the main body and is suitable for triggering the corresponding second detection part, wherein the connection strength of the first touch part and the main body is lower than that of the second touch part and the main body.

According to the door hook assembly provided by the embodiment of the invention, the triggering time of the first detection piece and the triggering time of the second detection piece of the door hook assembly are different by arranging the first resetting piece.

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

according to one embodiment of the invention, the first trip member is rotatably coupled to the body between a first release position and a first trigger position.

According to one embodiment of the invention, the angle of rotation of the first trip member between the first release position and the first trigger position is in the range 5 ° to 30 °.

According to an embodiment of the present invention, the first returning member is a spring, and the spring is respectively connected to the main body and the first triggering member.

According to an embodiment of the invention, a mounting groove is formed on the main body, and one end of the first triggering member is rotatably arranged in the mounting groove, so that the first triggering member is movable between a first release position and a first trigger position.

According to one embodiment of the invention, the body comprises: a support; the clamp plate, the clamp plate with the support links to each other, just the clamp plate with the support relative position is fixed, the locating pin, the both ends of locating pin respectively with the clamp plate with the support links to each other, wherein, the one end of first touch piece is rotationally located the clamp plate with between the support, just the one end of first touch piece has the through-hole, the locating pin rotationally passes the through-hole.

According to one embodiment of the invention, two ends of the pressure plate are respectively connected with the bracket through bolts, and the positioning pin is arranged between the two bolts.

According to an embodiment of the present invention, the second trip part is connected to the main body in a relatively fixed manner or is integrally formed with the main body.

According to one embodiment of the invention, the second trip member is movable relative to the main body between a second release position and a second trigger position, the door hook assembly further comprising: the second resets and locates on the main part and often to the second trigger position drive the second touches the movable part, wherein, the second resets to the second touch the movable part reset power that the power is greater than to the first reset that resets to the first touch the movable part.

According to one embodiment of the present invention, the first trip member includes a first connecting rod and a first hook connected to a free end of the first connecting rod, and the second trip member has a second connecting rod and a second hook connected to the second connecting rod.

According to an embodiment of the present invention, the main body is in a strip shape, the first contact member and the second contact member are disposed at an interval in an extending direction of the main body, and the first contact member and the second contact member extend out toward the same side of the main body.

According to a second aspect of the invention, an open and close door detection system comprises: the switch structure comprises a first detection piece and a second detection piece, and the first detection piece and the second detection piece are connected in series; the door hook assembly is the door hook assembly of the household appliance in the embodiment, the first detection piece corresponds to the first touch piece, and the second detection piece corresponds to the second touch piece.

According to the door closing and opening assembly, the sequence of the first detection piece and the second detection piece in the door opening and closing state can be effectively ensured.

A household appliance according to an embodiment of the third aspect of the invention, comprises: a cavity; the door body is used for opening and closing the cavity; the door opening and closing detection system is the door opening and closing detection system of the household appliance, the door hook component is arranged on the door body, and the detection component is arranged on the cavity.

According to the household appliance provided by the embodiment of the invention, the condition of short circuit of the circuit can be effectively avoided.

According to an embodiment of the present invention, the cavity is provided with a first slide-in inclined surface and a second slide-in inclined surface extending upward in a front-to-rear direction, the first detection member is disposed behind the first slide-in inclined surface, a contact point of the first detection member is lower than an upper end edge of the first slide-in lower surface, the second detection member is disposed behind the second slide-in inclined surface, and a contact point of the second detection member is lower than an upper end edge of the second slide-in lower surface.

According to one embodiment of the invention, the chamber has a support on which the detection assembly is disposed.

According to an embodiment of the present invention, the door hook assembly is movably disposed on the door body between a first position and a second position, the door hook assembly locks the door body with the cavity at the second position, and the door body is provided with: the third resets, the third reset respectively with the main part with the door body links to each other, just the third resets often to the second position drive door hook component, wherein, the third resets to door hook component's reset power is greater than first resets to first touch the reset power of piece.

According to one embodiment of the invention, the first detection member is a primary switch.

According to an embodiment of the present invention, the second detecting member includes a secondary switch, a monitor switch, and an interlock lever having a contact point corresponding to the second contact member, and the interlock lever is adapted to simultaneously trigger the secondary switch and the monitor switch.

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

Fig. 1 is a safety circuit diagram of an oven door of a microwave oven in the related art;

FIG. 2 is a schematic view of a prior art door hook assembly;

FIG. 3 is an assembled schematic view of a door hook assembly of a prior art household appliance;

FIG. 4 is a schematic structural view of a door hook assembly according to one embodiment of the present invention;

FIG. 5 is an exploded view of a door hook assembly according to one embodiment of the present invention;

FIG. 6 is a partial block diagram of a door hook assembly according to one embodiment of the present invention;

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

Reference numerals:

the home-use electric appliance 1 is,

the door hook assembly 100 is provided with a door hook assembly,

a main body 10, a mounting groove 11, a bracket 12, a pressing plate 13, a positioning pin 14, a bolt 15,

a first contact member 20, a through hole 21, a first connecting handle 22, a first hook 23,

a first restoring member (30) is provided,

a second trigger 40, a second connecting handle 41, a second hook 42,

a detecting assembly 200, a first detecting member 201, a second detecting member 202, an interlocking lever 203,

the device comprises a cavity 300, a first slide-in inclined surface 301, a second slide-in inclined surface 302 and a frame body 303.

Reference numbers in figures 1, 2 and 3 of the drawings: fuse tube 1 ', primary switch 2 ', secondary switch 3 ', monitor switch 4 ', load 5 ', door hook 6 ', sliding latch 7 ', sliding latch slot 8 ', hook spring 9 ', door body 10 ', door seal 11 ', interlocking bracket 12 ', and interlocking lever 13 '.

Detailed Description

A door switch safety circuit diagram of a related art home appliance, for example, a microwave oven, is shown in fig. 1, in which 2 ' is a primary switch, 4 ' is a monitor switch, 3 ' is a secondary switch, 1 ' is a fuse, 5 ' is a load, the primary switch 2 ' and the secondary switch 3 ' are normally open switches, which are located in a main circuit of the circuit, and the switches are turned on after the door is closed, so that the microwave oven can safely operate. The monitoring switch 4 ' is a normally closed switch, and is positioned between the primary switch 2 ' and the secondary switch 3 ', when the oven door is closed, the monitoring switch 4 ' must be firstly opened, then the primary switch 2 ' and the secondary switch 3 ' can be closed, at the moment, the microwave oven normally works, when the oven door is opened, the primary switch 2 ' and the secondary switch 3 ' must be firstly opened, the monitoring switch 4 ' can be closed, at the moment, the microwave oven stops working, otherwise, a circuit short circuit and a fuse can be burnt out.

And the structure diagram of the door hook in the related art is shown in fig. 2, two draw hooks are arranged on the door hook 6 ', the contact surface of the draw hooks and the microswitch is designed to be arc, meanwhile, the door hook 6 ' has a sliding latch 7 ' structure, and the interlock switch structure is shown in fig. 3, the mechanism is composed of the door hook 6 ', a draw hook spring 9 ', a door body 10 ', a door seal 11 ', an interlock support 12 ', an interlock lever 13 ', a primary switch 2 ', a monitoring switch 4 ' and a secondary switch 3 ', wherein the draw hooks are matched with a sliding latch groove 8 ' on the door body through the sliding latch 7 ', extend out of hole positions of the door body 10 ' corresponding to the door seal 11 ', the draw hook spring 9 ' plays a resetting role in the up-and-down movement of the door hook 6 ', the microswitch is fixed on the interlock support 12 ' through a buckling position, and the on-off of the microswitch is controlled by the draw hooks and the.

It can be seen from the above that, because the door hook component in the prior art is of an integrated structure, when the oven door is opened or closed, the sequence of the primary microswitch and the monitoring switch is difficult to be strictly ensured, and according to the design standard, the time difference between the operation intervals of the primary switch and the monitoring switch must be more than 10 ms. If the interval time is too short or the sequence is reversed, a circuit short circuit and a fuse are burnt.

In order to solve the above problems, the present invention proposes a door hook assembly 100 of a home appliance 1, and the door hook assembly 100 according to an embodiment of the present invention is described below with reference to fig. 4 to 7.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

As shown in fig. 4, 5 and 6, the door hook assembly 100 may generally include: the main body 10, the first trip member 20, the first reset member 30 and the second trip member 40.

Specifically, as shown in fig. 4 and fig. 5, the first trip part 20 is connected to the main body 10, and the first trip part 20 is movable relative to the main body 10 between a first release position and a first trigger position, where the first trip part 20 is adapted to trigger the corresponding first detection part 201. The first reset piece 30 is disposed on the main body 10 and normally drives the first triggering piece 20 to the first triggering position. The second contact member 40 is connected to the main body 10, and the second contact member 40 is adapted to trigger the corresponding second detecting member 202, wherein the connection strength between the first contact member 20 and the main body 10 is lower than the connection strength between the second contact member 40 and the main body 10.

That is, the first touch member 20 has a first release position and a first trigger position, when the first touch member 20 contacts the first detecting member 201, the first touch member 20 can trigger the first detecting member 201 at the first trigger position, and when the first touch member 20 is separated from the first detecting member 201, the first touch member 20 cannot trigger the first detecting member 201 at the first trigger position. And the first trigger 20 still continues to move when in the first release position, and finally the first trigger 20 will be stationary in the first trigger position under the action of the first resetting member 30.

In addition, the connection strength between the second touch member 40 and the main body 10 is higher than that between the first touch member 20 and the main body 10, that is, the first touch member 20 is more sensitive, and the second touch member 40 can reach a stable state faster than the first touch member 20, and both the first detecting member 201 and the second detecting member are triggered when the first touch member 20 and the second touch member 40 are stable.

It can be understood that when the first detecting member 201 contacts the first touching member 20, the first detecting member 201 is buffered by the first resetting member 30, and the movement of the first detecting member 201 will have a certain delay, that is, the time required for the first detecting member 201 to reach the stable state is longer than the time required for the second detecting member 202 to reach the stable state, so that the second detecting member 202 is triggered when the first detecting member 201 contacts the first touching member 20. When the first detecting member 201 is separated from the first touching member 20, due to the buffering effect of the first resetting member 30, the first touching member 20 moves before the second touching member 40, in other words, the time for separating the first touching member 20 from the first detecting member 201 is earlier than the time for separating the second touching member 40 from the second detecting member 202, and the first detecting member 201 is triggered immediately at the moment when the first detecting member 201 is separated from the first touching member 20. Therefore, when the first detecting member 201 is separated from the first triggering member 20, the triggering time of the first detecting member 201 is earlier than that of the second detecting member 202.

Furthermore, the first trip member 20 is movable relative to the main body 10, where the movement can be rotational or translational or other forms of movement.

Further, the connection strength of the second contact element 40 with the main body 10 is greater than that of the first contact element 20 with the main body 10, wherein the second contact element 40 and the main body 10 may be integrally formed or may be separately disposed.

Thus, according to the door hook assembly 100 of the embodiment of the present invention, by providing the first reset element 30, when the first detecting element 201 contacts the first triggering element 20, the triggering time of the second detecting element 202 is earlier than that of the first detecting element 201, and when the first detecting element 201 is separated from the first triggering element 20, the triggering time of the first detecting element 201 is earlier than that of the second detecting element 202.

In some embodiments, as shown in FIG. 5, the first trip member 20 is pivotally connected to the body 10 between a first release position and a first trigger position. That is, the first contact element 20 is separated from the main body 10, the first contact element 20 is in the first release position after rotating a certain angle from the rest state, and the first contact element 20 rotates back to the first trigger position again under the action of the first reset element 30. Of course, the above-mentioned embodiments are only illustrative and should not be construed as limiting the scope of the present invention, for example, the first trip member 20 and the main body 10 may be movable in a vertical translational manner between the first release position and the first trigger position, or the first trip member 20 and the main body 10 may be movable in a curvilinear manner between the first release position and the first trigger position.

In some alternative embodiments, the angle of rotation of the first trip member 20 between the first release position and the first trigger position is in the range of 5 ° to 30 °. For example, the rotation angle between the first release position and the first trigger position of the first trip member 20 is 15 °, wherein the first trigger position of the first trip member 20 is 0 °, the first release position is 15 °, and the first trip member 20 is rotatable between 0 ° and 15 °; the rotation angle between the first release position and the first trigger position of the first trigger 20 is 25 °, wherein the first trigger position of the first trigger 20 is 0 °, the first release position is 25 °, and the first trigger 20 is rotatable between 0 ° and 25 °; the angle of rotation between the first release position and the first trigger position of the first trip part 20 is 30 °, the first trigger position of the first trip part 20 is 0 °, the first release position is 30 °, and the first trip part 20 is rotatable between 0 ° and 30 °.

In some embodiments, as shown in fig. 5, the first restoring member 30 is a spring, and the spring is connected to the main body 10 and the first trip member 20 respectively. Specifically, one end of the spring abuts against the main body 10, the other end of the spring abuts against the first touch member 20, the first touch member 20 drives the spring to stretch or contract when rotating, and more specifically, when the first touch member 20 moves from the first trigger position to the first release position, the spring stores elastic potential energy, and when the first touch member 20 moves from the first release position to the first touch position, the spring releases the elastic potential energy, so that a buffering effect can be achieved, the spring is convenient to obtain and install, and the cost can be saved.

In some embodiments, as shown in fig. 5 and fig. 6, a mounting slot 11 is formed on the main body 10, and one end of the first trip member 20 is rotatably disposed in the mounting slot 11, so that the first trip member 20 is movable between a first release position and a first trigger position. In this way, the door hook assembly 100 has a thin thickness and a compact structure, which can save raw materials, and the edge of the mounting groove 11 of the main body 10 can also be used as a limiting member to limit the rotation angle of the first touching member 20.

In some embodiments, as shown in fig. 4 and 5, the main body 10 includes a support 12, a pressing plate 13 and a positioning pin 14, the pressing plate 13 is connected to the support 12, the pressing plate 13 is fixed relative to the support 12, and two ends of the positioning pin 14 are respectively connected to the pressing plate 13 and the support 12, wherein one end of the first contacting member 20 is rotatably disposed between the pressing plate 13 and the support 12, the one end of the first contacting member 20 has a through hole 21, and the positioning pin 14 rotatably passes through the through hole 21. That is, the positioning pin 14 passes through the pressing plate 13, the first contact member 20 and the bracket 12 in sequence, the first contact member 20 is mounted on the main body 10, and the first contact member 20 can rotate around the positioning pin 14. The positioning pin 14, the pressing plate 13 and the support 12 are in interference fit, and the positioning pin 14 and the first touch part 20 are in clearance fit, so that the first touch part 20 can rotate around the cylindrical pin, and the pressing plate 13 and the support 12 cannot rotate around the cylindrical pin.

In one embodiment, as shown in fig. 4 and 5, the two ends of the pressure plate 13 are respectively connected with the bolts 15 of the bracket 12, and the positioning pin 14 is arranged between the two bolts 15. In other words, the pressing plate 13 is connected with the bracket 12 by the bolts 15, and the two ends of the pressing plate 13 are provided with the threaded holes, so that two-point positioning can be formed at the two ends of the pressing plate 13, the structure is stable, and the cylindrical pin is arranged between the two bolts 15, so that the pressing plate 13 can be ensured not to rotate under the driving of the cylindrical pin.

In some embodiments, the second trip member 40 is fixedly connected to or integrally formed with the main body 10. When the second contacting element 40 is integrally formed with the main body 10 or relatively fixedly connected to the main body 10, the second contacting element 40 cannot move relative to the main body 10, in other words, the second contacting element 40 and the main body 10 move in the same direction. Thus, when the first detecting member 201 contacts the first touching member 20, the triggering time of the second detecting member 202 is earlier than that of the first detecting member 201, and when the first detecting member 201 is separated from the first touching member 20, the triggering time of the first detecting member 201 is earlier than that of the second detecting member 202.

In other embodiments, the second triggering member 40 is movable relative to the main body 10 between a second release position and a second trigger position, and the door hook assembly 100 further includes a second resetting member disposed on the main body 10 and normally driving the second triggering member 40 toward the second trigger position, wherein a resetting force of the second resetting member on the second triggering member 40 is greater than a resetting force of the first resetting member 30 on the first triggering member 20.

The second trigger 40 has a second release position and a second trigger position, when the second trigger 40 contacts the second detecting element 202, the second trigger 40 can trigger the second detecting element 202 at the second trigger position, and when the second trigger 40 is separated from the second detecting element 202, the second trigger 40 cannot trigger the second detecting element 202 at the second trigger position. And the second trigger member 40 still continues to move when in the second release position, and finally the second trigger member 40 will be stationary at the second trigger position under the action of the second resetting member.

It can be understood that when the second detecting member 202 contacts the second contacting member 40, the second detecting member 202 will have a certain delay in the movement of the second detecting member 202 under the buffering action of the second resetting member, but because the first contacting member 20 is more sensitive, the first contacting member 20 takes more time to reach the stable state, that is, the first detecting member 201 takes longer time to reach the stable state than the second detecting member 202, so even if the second detecting member 202 is provided with the second resetting member, the second detecting member 202 is still triggered when the detecting member contacts the contacting member. When the second detecting member 202 is separated from the second touching member 40, since the buffering action of the second resetting member is smaller than the buffering action of the first resetting member 30, the first touching member 20 still moves before the second touching member 40, in other words, the time for separating the first touching member 20 from the first detecting member 201 is earlier than the time for separating the second touching member 40 from the second detecting member 202, and the first detecting member 201 is triggered immediately at the moment when the first detecting member 201 is separated from the first touching member 20. Therefore, when the detecting member is separated from the triggering member, the triggering time of the first detecting member 201 is earlier than that of the second detecting member 202.

In some embodiments, as shown in fig. 4 and 5, the first trip member 20 includes a first connecting rod 22 and a first hook 23 connected to a free end of the first connecting rod 22, and the second trip member 40 has a second connecting rod 41 and a second hook 42 connected to the second connecting rod 41. The first connecting handle 22 and the second connecting handle 41 are connected to the main body 10, and the free end of the first connecting handle 22 and the free end of the second connecting handle 41 are connected to the first hook 23 and the second hook 42, respectively, so that the first contact member 20 and the second contact member 40 can extend out of the main body 10 to contact the first detecting member 201 and the second detecting member 202.

Further, as shown in fig. 4, 5 and 6, the main body 10 is in a long strip shape, the first contact member 20 and the second contact member 40 are disposed at an interval in the extending direction of the main body 10, and the first contact member 20 and the second contact member 40 extend out toward the same side of the main body 10. In this way, the first and

second trip parts

20 and 40 can connect the main body 10 to other equipment, and the fixed connection between the two ends is stable.

The door opening and closing detection system according to the embodiment of the invention comprises a detection assembly 200 and a door hook assembly 100, the door opening and closing structure comprises a first detection piece 201 and a second detection piece 202, the first detection piece 201 and the second detection piece 202 are connected in series, the door hook assembly 100 is the door hook assembly 100 of the household appliance 1 in the embodiment, the first detection piece 201 corresponds to the first contact piece 20, and the second detection piece 202 corresponds to the second contact piece 40. In one case, the door is opened when the detection piece is separated from the touch piece, and the door is closed when the detection piece is contacted with the touch piece; in another case, the door is closed when the detecting member is separated from the triggering member, and the door is opened when the detecting member is in contact with the triggering member. When the detecting piece contacts with the touch piece, the second touch piece 40 triggers the second detecting piece 202, and then the first touch piece 20 triggers the first detecting piece 201; when the detecting member is separated from the triggering member, the first triggering member 20 triggers the first detecting member 201, and then the second triggering member 40 triggers the second detecting member 202. The first detecting member 201 and the second detecting member 202 can detect the opening and closing of the door according to different situations.

As shown in fig. 7, the household appliance 1 according to the embodiment of the present invention includes a cavity 300, a door body and a door opening and closing detection system, wherein the door body is used for opening and closing the cavity 300; the door opening and closing detection system is the door opening and closing detection system of the household appliance 1, the door hook assembly 100 is arranged on the door body, and the detection assembly 200 is arranged on the cavity 300. When the door body opens the cavity 300, the first detection piece 201 is separated from the first touch piece 20, the second detection piece 202 is separated from the second touch piece 40, and the first detection piece 201 is triggered before the second detection piece 202; when the door body closes the cavity 300, the first detecting member 201 contacts the first triggering member 20, the second detecting member 202 contacts the second triggering member 40, and the second detecting member 202 is triggered before the first detecting member 201. Therefore, the triggering sequence of the first detecting part 201 and the second detecting part 202 can be effectively ensured, and the short circuit can be prevented.

In some embodiments, as shown in fig. 7, a first slide-in slope 301 and a second slide-in slope 302 extending upward in a front-to-rear direction are provided on the cavity 300, the first detection member 201 is provided behind the first slide-in slope 301, a contact point of the first detection member 201 is lower than an upper edge of the first slide-in lower surface, the second detection member 202 is provided behind the second slide-in slope 302, and a contact point of the second detection member 202 is lower than an upper edge of the second slide-in lower surface. The first hook portion 23 and the second hook portion 42 are preferably circular arc-shaped, so that the first hook portion 23 and the second hook portion 42 are subjected to a force perpendicular to the sliding-in inclined surface when passing through the first sliding-in inclined surface 301 and the second sliding-in inclined surface 302, and the first contact member 20 or the second contact member 40 is easily driven to rotate relative to the main body 10. And the contact point of the first detection piece 201 is lower than the upper edge of the first slide-in lower surface, when the first hook part 23 slides over the first slide-in inclined surface 301, and the second hook part 42 slides over the second slide-in inclined surface 302, the door hook assembly 100 integrally moves downwards, so that the first hook part 23 hooks the first slide-in inclined surface 301, the second hook part 42 hooks the second slide-in inclined surface 302, and the door body is locked.

In some alternative embodiments, as shown in fig. 7, the chamber 300 has a frame 303, and the detecting assembly 200 is disposed on the frame 303. A rack 303 is arranged in the cavity 300 for mounting the detection assembly 200, so that the structure is neat.

Preferably, door hook component 100 is movably located between first position and second position on the door body, door hook component 100 is in the second position will the door body pins with cavity 300, be equipped with the third piece that resets on the door body, the third reset respectively with main part 10 with the door body links to each other, just the third resets the piece often to second position drive door hook component 100, wherein, the third resets the reset force of piece to door hook component 100 and is greater than the reset force of first piece 30 to first touching piece 20 that resets. It can be understood that when the door body is closed, the door hook assembly 100 is initially in the second position, the first contact member 20 and the second contact member 40 are guided by the first slide-in slope 301 and the second slide-in slope 302, the door hook assembly 100 moves up or down as a whole, at this time, the third resetting member stores potential energy, when the first contact member 20 and the second contact member 40 move beyond the first slide-in slope 301 and the second slide-in slope 302 (when the first hook member 23 is just separated from the first slide-in slope 301, the door hook assembly 100 is in the first position), the door hook assembly 100 lacks support, and returns to the second position again under the action of the third resetting member, and then the first trigger returns to the first triggering position under the action of the first resetting member 30, and the second trigger returns to the second triggering position under the action of the second resetting member. When the door body is opened, the door hook assembly 100 starts to be at the second position, the first contact member 20 firstly rotates a certain angle around the main body 10, then the first contact member 20 and the second contact member 40 integrally move downwards or upwards under the guiding action of the first slide-in inclined surface 301 and the second slide-in inclined surface 302, at the moment, the third reset member stores potential energy, when the first contact member 20 and the second contact member 40 move to be separated from the first slide-in inclined surface 301 and the second slide-in inclined surface 302, the door hook assembly 100 lacks support and returns to the second position again under the action of the third reset member, and finally, the first trigger part returns to the first trigger position under the action of the first reset member 30, and the second trigger part returns to the second trigger position under the action of the second reset member.

In some embodiments, the first sensing member 201 is a primary switch. The primary switch is a normally open switch and controls the on-off of the whole circuit.

Further, as shown in fig. 7, the second detecting member 202 includes a secondary switch, a monitor switch, and an interlock lever 203, the interlock lever 203 has a contact point corresponding to the second contact member 40, and the interlock lever 203 is adapted to simultaneously trigger the secondary switch and the monitor switch. After the second touch member 40 touches the touch point, the interlock lever 203 simultaneously triggers the secondary switch and the monitor switch, wherein the on-off states of the monitor switch and the secondary switch are always opposite. Specifically, in a normal case, the secondary switch is a normally open switch, the monitoring switch is a normally closed switch, when the door body closes the cavity 300, the monitoring switch must be turned off first, the secondary switch can be turned off, and the household appliance 1 starts to work; when the door body opens the cavity 300, the secondary switch must be disconnected first, and the monitoring switch can be closed, so that the household appliance 1 cannot be short-circuited.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A door hook assembly of a household appliance, comprising:

a main body;

the first touch part is connected with the main body and can move between a first release position and a first trigger position relative to the main body, and the first touch part is suitable for triggering a corresponding first detection part at the first trigger position;

the first reset piece is arranged on the main body and drives the first touch piece to the first trigger position normally;

a second trigger connected to the main body and adapted to trigger a corresponding second detection member,

the connecting strength of the first touch piece and the main body is lower than that of the second touch piece and the main body.

2. A door hook assembly for household appliances according to claim 1, characterized in that the first trip member is rotatably associated with the main body between a first release position and a first triggering position.

3. A door hook assembly of a household appliance according to claim 2, characterized in that the angle of rotation of the first trip member between the first release position and the first triggering position is in the range of 5 ° to 30 °.

4. The door hook assembly of a home appliance according to claim 1, wherein the first restoring member is a spring, and the spring is connected to the main body and the first triggering member, respectively.

5. A door hook assembly according to any one of claims 1 to 4, wherein a mounting slot is provided on the main body, and one end of the first triggering member is rotatably provided in the mounting slot, so that the first triggering member is movable between the first release position and the first trigger position.

6. A door hook assembly of a home appliance according to claim 1, wherein the main body comprises:

a support;

the pressing plate is connected with the bracket, the relative position of the pressing plate and the bracket is fixed,

the two ends of the positioning pin are respectively connected with the pressing plate and the bracket,

one end of the first touch piece is rotatably arranged between the pressing plate and the support, a through hole is formed in one end of the first touch piece, and the positioning pin rotatably penetrates through the through hole.

7. The door hook assembly of household appliances according to claim 6, wherein both ends of the pressing plate are respectively connected with the bracket bolts, and the positioning pin is disposed between the two bolts.

8. A door hook assembly for a household appliance according to claim 1, wherein the second trip part is connected to the main body in a relatively fixed manner or is formed in one piece therewith.

9. A door hook assembly for a household appliance according to claim 1, wherein said second trip member is movable relative to said main body between a second release position and a second trigger position, said door hook assembly further comprising:

the second reset piece is arranged on the main body and drives the second touch piece to the second trigger position,

the second reset piece is used for resetting the second touch piece, and the reset force of the second reset piece on the second touch piece is larger than the reset force of the first reset piece on the first touch piece.

10. The door hook assembly of a home appliance according to claim 1, wherein the first trip member includes a first connecting handle and a first hook connected to a free end of the first connecting handle, and the second trip member has a second connecting handle and a second hook connected to the second connecting handle.

11. The door hook assembly of a household appliance according to claim 10, wherein the main body is elongated, the first contacting member and the second contacting member are spaced apart from each other in an extending direction of the main body, and the first contacting member and the second contacting member extend out toward the same side of the main body.

12. An open/close door detection system for a household appliance, comprising:

the switch structure comprises a first detection piece and a second detection piece, and the first detection piece and the second detection piece are connected in series;

a door hook assembly of a household appliance according to any one of claims 1 to 11, wherein the first detection member corresponds to the first contact member and the second detection member corresponds to the second contact member.

13. A household appliance, characterized in that it comprises:

a cavity;

the door body is used for opening and closing the cavity;

the door opening and closing detection system is the door opening and closing detection system of the household appliance according to claim 12, the door hook assembly is arranged on the door body, and the detection assembly is arranged on the cavity.

14. The household appliance according to claim 13, wherein the cavity is provided with a first slide-in slope and a second slide-in slope extending upward in a front-to-rear direction, the first detection member is disposed behind the first slide-in slope, and a contact point of the first detection member is lower than an upper end edge of the first slide-in lower surface, the second detection member is disposed behind the second slide-in slope, and a contact point of the second detection member is lower than an upper end edge of the second slide-in lower surface.

15. The household appliance according to claim 13 or 14, wherein the cavity has a support on which the detection assembly is arranged.

16. The household appliance according to claim 13 or 14, wherein the door hook assembly is movably disposed on the door body between a first position and a second position, the door hook assembly locks the door body with the cavity at the second position, and the door body is provided with:

a third reset piece, which is respectively connected with the main body and the door body and drives the door hook component towards the second position,

the third reset piece resets the door hook assembly, and the first touch piece is touched by the first touch piece.

17. The household appliance according to claim 13 or 14, wherein the first detection member is a primary switch.

18. The household appliance according to claim 13 or 14, characterized in that the second detection member comprises a secondary switch, a monitoring switch and an interlocking lever having a contact point corresponding to the second contact member and adapted to simultaneously activate the secondary switch and the monitoring switch.