Home appliance safety door lock

Abstract

A household appliance safety door lock comprises a base, a door hook, a first slider, an electromagnetic switch box, and a second slider disposed between the electromagnetic switch box and the base. The base has a door lock opening at a position corresponding to the door hook, and a limit opening is disposed in the middle of the first slider. The electromagnetic switch box comprises a box base, a static contact disposed in the box base, a movable spring disposed in the box base and opposite the static contact, a lock block movably protruding from the bottom surface of the box base, and a push rod located on a side of the movable spring away from the box cover and movably protruding from the bottom surface of the box base. The limit opening movably opposes the lock block, and an active protrusion protruding from one side of the second slider is provided with a guide slope. The push rod is located above the active protrusion. This ensures that the door can be accurately aligned with its usage state, thereby controlling the conduction or disconnection of the conduction circuit and improving safety.

Description

Technical Field

[0001] The present invention relates to the technical field related to household appliances, and in particular to a household appliance safety door lock. Background Art

[0002] Household appliances, such as washing machines or dishwashers, have doors that can be opened or closed and are equipped with a door lock. The door lock is also equipped with a conduction circuit connected to the main circuit of the household appliance. When the door lock is locked, the conduction circuit is conductive, allowing the household appliance to operate; when the door lock is unlocked, the conduction circuit is disconnected, causing the household appliance to stop operating. This can cause a person to enter the machine and be injured if the door is accidentally opened, as is the case with the washing machine door lock switch disclosed in Chinese Patent CN105386277B. It is worth noting that if the door lock is forcefully opened while locked, the conduction circuit remains conductive, allowing the household appliance to continue operating. However, since the door is open, a person can easily enter the machine and be injured, resulting in a safety accident. Summary of the Invention

[0003] In view of this, the present invention provides a home appliance safety door lock that can truly correspond to the usage status of the door, thereby controlling the conduction or disconnection of the conduction circuit and improving safety, in order to solve the above problems.

[0004] A household appliance safety door lock comprises a base, a door hook rotatably arranged in the base, a first slider slidably arranged in the base and capable of approaching or moving away from the door hook, an electromagnetic switch box located on a side of the first slider away from the base, and a second slider arranged between the electromagnetic switch box and the base; a door lock opening is provided at a position of the base corresponding to the door hook, and a limiting opening is provided in the middle of the first slider; the electromagnetic switch box comprises a box base, a static contact arranged in the box base, a movable spring arranged in the box base and opposite to the static contact, a lock block movably protruding from the bottom surface of the box base, and a push rod located on a side of the movable spring away from the box upper cover and movably protruding from the bottom surface of the box base; the limiting opening is movably opposite to the lock block, an action protrusion is protruding from one side of the second slider, a guide inclined surface is provided on the action protrusion, and the push rod is located above the action protrusion.

[0005] Furthermore, a first sliding groove and a second sliding groove are provided in parallel on the inner side of the base, the first sliding block is slidably located in the first sliding groove, and the second sliding block is slidably located in the second sliding groove.

[0006] Furthermore, a first elastic member is provided between the first sliding block and the side wall of the base.

[0007] Furthermore, a second elastic member is provided between the second sliding block and the side wall of the base.

[0008] Furthermore, the box base is provided with a locking block opening on one side of the static contact, and the locking block is located in the locking block opening.

[0009] Furthermore, a portion of the top end of the locking block close to the movable spring is provided with an escape opening, and the end portion of the movable spring can be movably located in the escape opening.

[0010] Furthermore, a reed mounting platform is provided in the middle of the box base, and the middle of the movable reed is mounted on the reed mounting platform.

[0011] Furthermore, a push rod opening is provided between the static contact and the spring mounting platform, and the push rod is located in the push rod opening.

[0012] Furthermore, an overlapping sliding groove is provided on the top surface of the first sliding block and on a side close to the second sliding block, and the active protrusion is movably located in the overlapping sliding groove.

[0013] Furthermore, the push rod includes a push rod body and a push block connected to the top end of the push rod body. The push block protrudes and extends toward the static contact, and the end of the push block is tilted upward.

[0014] Compared to the prior art, the present invention provides a home appliance safety door lock comprising a base, a door hook rotatably disposed in the base, a first slider slidably disposed in the base and capable of moving closer to or further away from the door hook, an electromagnetic switch box located on a side of the first slider away from the base, and a second slider disposed between the electromagnetic switch box and the base. The base comprises a door lock opening at a position corresponding to the door hook, and a limiting opening is defined in the middle of the first slider. The electromagnetic switch box comprises a box base, a static contact disposed in the box base, a movable spring disposed in the box base and opposing the static contact, a locking block movably protruding from the bottom surface of the box base, and a push rod located on a side of the movable spring away from the box cover and movably protruding from the bottom surface of the box base. The limiting opening movably opposes the locking block, a protruding action block protruding from one side of the second slider, the protruding action block having a guide slope, and the push rod located above the protruding action block. This ensures that the door can be accurately aligned with its usage state, thereby controlling the conduction or disconnection of the conductive circuit and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0016] Figure 1 This is a three-dimensional schematic diagram of the home appliance safety door lock provided by the present invention.

[0017] Figure 2 This is a schematic diagram of the disassembly of the home appliance safety door lock provided by the present invention.

[0018] Figure 3 This is a schematic diagram of an explosion of the home appliance safety door lock provided by the present invention.

[0019] Figure 4 for Figure 3 Schematic diagram of the middle spring, push rod and locking block.

[0020] Figure 5 for Figure 3 Schematic diagram of the first slider, the second slider and the door hook.

[0021] Figure 6 for Figure 3 Schematic diagram of the first slider, the second slider and the door hook from another perspective.

[0022] Figure 7 This is a partial cross-sectional schematic diagram of the home appliance safety door lock provided by the present invention. DETAILED DESCRIPTION

[0023] The following is a further detailed description of specific embodiments of the present invention based on the accompanying drawings. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the scope of protection of the present invention.

[0024] Please refer to Figures 1 to 3 The household appliance safety door lock provided by the present invention includes a base 1, a door hook 2 rotatably arranged in the base 1, a first slider 3 slidably arranged in the base 1 and capable of moving closer to or away from the door hook 2, an electromagnetic switch box 4 located on a side of the first slider 3 away from the base 1, and a second slider 5 arranged between the electromagnetic switch box 4 and the base 1.

[0025] A first slide groove 11 and a second slide groove 12 are provided parallel to the inner side of the base 1. The first slider 3 slides in the first slide groove 11, and the second slider 5 slides in the second slide groove 12. A door lock opening 13 is provided in the base 1 at a position corresponding to the door hook 2, for inserting a protrusion on an external door. A first elastic member is provided between the first slider 3 and the side wall of the base 1, and a second elastic member is provided between the second slider 5 and the side wall of the base 1.

[0026] When the protrusion enters the door lock opening 13, it drives the door hook 2 to rotate. At this time, space is vacated under the door hook 2, and the first slider 3 extends under the door hook 2 under the elastic action of the first elastic member. At the same time, the protrusion pushes the second slider 5 to move away from the door hook 2. The door hook 2 hooks the external protrusion.

[0027] A limiting opening 31 is defined in the middle of the first sliding block 3 .

[0028] The electromagnetic switch box 4 includes a box base 41, a box cover 42 arranged opposite to the box base 41, a static contact 43 arranged in the box base 41, a movable spring 44 arranged in the box base 41 and opposite to the static contact 43, a locking block 45 that can movably protrude from the bottom surface of the box base 41, and a top rod 46 located on the side of the movable spring 44 away from the box cover 42 and can movably protrude from the bottom surface of the box base 41.

[0029] A reed mounting platform 411 is provided in the middle of the box base 41 , and the middle of the movable reed 44 is mounted on the reed mounting platform 411 , and the connection method can be screw connection, rivet connection, etc.

[0030] A locking block opening 412 is defined on one side of the static contact 43 of the box base 41 , and the locking block 45 is located in the locking block opening 412 ; a push rod opening 413 is defined between the static contact 43 and the spring mounting platform 411 , and the push rod 46 is located in the push rod opening 413 .

[0031] When the first slider 3 extends to the bottom of the door hook 2 under the elastic action of the first elastic member, the limit opening 31 is opposite to the locking block 45, and the locking block 45 extends into the limit opening 31 under the action of gravity, thereby preventing the first slider 3 from moving away from the door hook 2, and then preventing the door hook 2 from rotating, so that the door hook 2 always hooks the protrusion.

[0032] Please refer to Figure 4 A top end of the locking block 45 close to the movable spring 44 is provided with an escape opening 451 , and the end of the movable spring 44 is movably positioned in the escape opening 451 .

[0033] Please refer to Figure 5 An overlapping chute 32 is provided on the top surface of the first slider 3, on the side close to the second slider 5. An operating protrusion 51 is provided protrudingly in the middle of the side of the second slider 5 close to the first slider 3. The operating protrusion 51 is movably located in the overlapping chute 32. A guiding inclined surface 511 is provided on the operating protrusion 51, and the ejector rod 46 is located above the operating protrusion 51.

[0034] Please refer to Figure 7 When the external protrusion moves out of the door lock opening 13, the second slider 5 moves toward the door lock opening 13 under the elastic action of the second elastic member, and the guide slope 511 acts on the push rod 46, thereby pushing the push rod 46 upward, and the push rod 46 then pushes the movable spring 44 upward, so that the movable spring 44 is separated from the static contact 43.

[0035] The advantage of overlapping the active protrusion 51 with the first sliding block 3 is that the installation space is reduced, making the structure more compact and smaller in size.

[0036] Since the ejector pin 46 is located between the static contact 43 and the spring mounting platform 411, in order to further improve its ejection effect and efficiency, the ejector pin 46 is configured as follows: it includes a roughly cylindrical ejector pin body 461 and a ejector block 462 connected to the top end of the ejector pin body 461, the ejector block 462 protrudes and extends toward the static contact 43, and the end of the ejector block 462 is tilted upward, so that when the ejector pin body 461 moves upward, the ejector block 462 is away from the end of the ejector pin body 461 and abuts against the part of the movable spring 44 close to the static contact 43, rather than directly abutting against the part of the movable spring 44 located between the static contact 43 and the spring mounting platform 411.

[0037] Please refer to Figure 6 The bottom of the door hook 2 is provided with a first sliding slope 21, and the end corner of the first slider 3 close to the door hook 2 is provided with a second sliding slope 34 corresponding to the first sliding slope 21. When the door hook 2 rotates, the first sliding slope 21 contacts and acts on the second sliding slope 34, causing the first slider 3 to move accordingly.

[0038] A first guide groove 33 is defined on the bottom surface of the first sliding block 3 , and a second guide groove 52 is defined on the bottom surface of the second sliding block 5 .

[0039] Please refer again Figure 2 The first guide rail 111 is protrudingly provided in the first chute 11, and the second guide rail 121 is protrudingly provided in the second chute 12. The first guide rail 111 is located in the first guide groove 33, and the second guide rail 121 is located in the second guide groove 52. This guides the movement of the first slider 3 and the second slider 5.

[0040] Compared with the prior art, the household appliance safety door lock of the present invention comprises a base 1, a door hook 2 rotatably arranged in the base 1, a first slider 3 slidably arranged in the base 1 and capable of approaching or moving away from the door hook 2, an electromagnetic switch box 4 located on a side of the first slider 3 away from the base 1, and a second slider 5 arranged between the electromagnetic switch box 4 and the base 1; the base 1 is provided with a door lock opening 13 at a position corresponding to the door hook 2, and a limiting opening 31 is provided in the middle of the first slider 3; the electromagnetic switch box 4 comprises a box base 41, a second slider 5 arranged at the bottom of the box The seat 41 includes a static contact 43, a movable spring 44 disposed within the box base 41 and opposing the static contact 43, a locking block 45 movably protruding from the bottom surface of the box base 41, and a push rod 46 located on the side of the movable spring 44 away from the box cover 42 and movably protruding from the bottom surface of the box base 41. The stopper 31 movably faces the locking block 45. An operating protrusion 51 protrudes from one side of the second slider 5, which is provided with a guiding slope 511. The push rod 46 is located above the operating protrusion 51. This allows the door to be opened or closed accurately according to its usage state, thereby controlling the conduction circuit to be turned on or off, thereby improving safety.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements or improvements within the spirit of the present invention are included in the scope of the claims of the present invention.

Claims

1. A household appliance safety door lock, characterized by: The door lock of claim 1, wherein the locking cam is secured to the left of the locking cam and is engageable with the first member when the handle is engaged.

2. The home appliance safety door lock according to claim 1, characterized in that: A first sliding groove and a second sliding groove are arranged in parallel on the inner side of the base. The first sliding block is slidably located in the first sliding groove, and the second sliding block is slidably located in the second sliding groove.

3. The home appliance safety door lock according to claim 1, characterized in that: The box base is provided with a locking block opening on one side of the static contact, and the locking block is located in the locking block opening.

4. The home appliance safety door lock according to claim 3, characterized in that: A evasion opening is provided at the top of the locking block, close to the movable spring piece, and the end of the movable spring piece is movably located in the evasion opening.

5. The home appliance safety door lock according to claim 1, characterized in that: A reed mounting platform is provided in the middle of the box base, and the middle of the movable reed is mounted on the reed mounting platform.

6. The home appliance safety door lock according to claim 5, characterized in that: A push rod opening is provided between the static contact and the spring mounting platform, and the push rod is located in the push rod opening.

7. The home appliance safety door lock according to claim 1, characterized in that: An overlapping sliding groove is provided on the top surface of the first sliding block and on one side close to the second sliding block, and the action protrusion is movably located in the overlapping sliding groove.

8. The home appliance safety door lock according to claim 7, characterized in that: The ejector rod comprises an ejector rod body and an ejector block connected to the top end of the ejector rod body. The ejector block protrudes and extends toward the static contact, and the end of the ejector block is tilted upward.

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