CN216648166U

CN216648166U - Safety door lock for household electrical appliance

Info

Publication number: CN216648166U
Application number: CN202220212443.7U
Authority: CN
Inventors: 郑博龙; 李�杰
Original assignee: Shenlong Electric Co ltd
Current assignee: Shenlong Electric Co ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-05-31
Anticipated expiration: 2032-01-26

Abstract

A household appliance safety door lock comprises a base, a door hook, a first sliding block, an electromagnetic switch box and a second sliding block arranged between the electromagnetic switch box and the base; a door lock opening is formed in the position, corresponding to the door hook, of the base, and a limiting opening is formed in the middle of the first sliding block; the electromagnetic switch box comprises a box base, a fixed contact arranged in the box base, a movable spring piece arranged in the box base and opposite to the fixed contact, a locking block movably protruding out of the bottom surface of the box base, and an ejector rod positioned on one side of the movable spring piece, which is far away from the upper cover of the box, and movably protruding out of the bottom surface of the box base; the limiting opening is movably opposite to the locking block, an acting convex block is arranged on one side of the second sliding block in a protruding mode, a guide inclined plane is arranged on the acting convex block, and the ejector rod is located above the acting convex block. Therefore, the service state of the gate can be truly corresponded, the conduction or disconnection of the conduction circuit is controlled, and the safety is improved.

Description

Safety door lock for household electrical appliance

Technical Field

The utility model relates to the related technical field of household appliances, in particular to a safety door lock of a household appliance.

Background

Household appliances, such as washing machines or dishwashers, have a door which can be opened or closed and on which a door lock is arranged. The door lock is also provided with a conduction circuit connected with the main loop of the household appliance, and when the door lock is locked, the conduction circuit is conducted, so that the household appliance can work; when the door lock is opened, the conducting circuit is disconnected, so that the household appliance stops working, and therefore when the door is opened unexpectedly, a human body enters the machine and is damaged by the machine, such as a door lock switch of a washing machine disclosed in Chinese patent CN 105386277B. It is worth noting that when the door lock is in a locking state, if the door lock is pulled open by a strong force, the conducting circuit is still conducted, the household appliance continues to work, and at the moment, because the door is opened, a human body easily enters the machine and is damaged by the machine, so that safety accidents occur.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a safety door lock for home appliances, which can truly correspond to the use status of a door, thereby controlling the on/off of a conducting circuit and improving the safety, so as to solve the above problems.

A household appliance safety door lock comprises a base, a door hook rotationally arranged in the base, a first sliding block which is slidably arranged in the base and can be close to or far away from the door hook, an electromagnetic switch box positioned on one side of the first sliding block far away from the base, and a second sliding block arranged between the electromagnetic switch box and the base; a door lock opening is formed in the position, corresponding to the door hook, of the base, and a limiting opening is formed in the middle of the first sliding block; the electromagnetic switch box comprises a box base, a fixed contact arranged in the box base, a movable spring piece arranged in the box base and opposite to the fixed contact, a locking block movably protruding out of the bottom surface of the box base, and an ejector rod positioned on one side of the movable spring piece, which is far away from the upper cover of the box, and movably protruding out of the bottom surface of the box base; the limiting opening is movably opposite to the locking block, an acting convex block is arranged on one side of the second sliding block in a protruding mode, a guide inclined plane is arranged on the acting convex block, and the ejector rod is located above the acting convex block.

Furthermore, the inboard parallel arrangement of base has first spout and second spout, and first slider is arranged in first spout with sliding, and the second slider is arranged in the second spout with sliding.

Furthermore, a first elastic piece is arranged between the first sliding block and the side wall of the base.

Furthermore, a second elastic piece is arranged between the second sliding block and the side wall of the base.

Furthermore, a locking block opening is formed in one side, located at the fixed contact, of the box base, and the locking block is located in the locking block opening.

Furthermore, an avoiding opening is formed in the part, close to the movable spring, of the top end of the locking block, and the end part of the movable spring is movably located in the avoiding opening.

Furthermore, a reed mounting table is arranged in the middle of the box base, and the middle of the movable reed is mounted on the reed mounting table.

Furthermore, an ejector rod opening is formed between the static contact and the reed mounting platform, and the ejector rod is located in the ejector rod opening.

Furthermore, an overlapping sliding groove is formed in the top surface of the first sliding block and one side, close to the second sliding block, of the first sliding block, and the action convex block is movably located in the overlapping sliding groove.

Furthermore, the ejector rod comprises an ejector rod main body and an ejector block connected with the top end of the ejector rod main body, the ejector block extends towards the fixed contact in a protruding mode, and the tail end of the ejector block is arranged in an upward inclined mode.

Compared with the prior art, the household appliance safety door lock comprises a base, a door hook rotationally arranged in the base, a first sliding block which is slidably arranged in the base and can be close to or far away from the door hook, an electromagnetic switch box positioned on one side of the first sliding block far away from the base, and a second sliding block arranged between the electromagnetic switch box and the base; a door lock opening is formed in the position, corresponding to the door hook, of the base, and a limiting opening is formed in the middle of the first sliding block; the electromagnetic switch box comprises a box base, a fixed contact arranged in the box base, a movable spring piece arranged in the box base and opposite to the fixed contact, a locking block movably protruding out of the bottom surface of the box base, and an ejector rod positioned on one side of the movable spring piece, which is far away from the upper cover of the box, and movably protruding out of the bottom surface of the box base; the limiting opening is movably opposite to the locking block, an acting convex block is arranged on one side of the second sliding block in a protruding mode, a guide inclined plane is arranged on the acting convex block, and the ejector rod is located above the acting convex block. Therefore, the service state of the gate can be truly corresponded, the conduction or disconnection of the conduction circuit is controlled, and the safety is improved.

Drawings

Embodiments of the utility model are described below with reference to the accompanying drawings, in which:

fig. 1 is a schematic perspective view of a security door lock for home appliances according to the present invention.

Fig. 2 is a schematic diagram of a disassembled home appliance security door lock provided by the present invention.

Fig. 3 is an exploded view of the security door lock for home appliances according to the present invention.

Fig. 4 is a schematic view of the movable spring plate, the ejector rod and the locking block in fig. 3.

Fig. 5 is a schematic view of the first slider, the second slider and the door hook in fig. 3.

Fig. 6 is a schematic view of the first slider, the second slider and the hook in fig. 3 from another viewing angle.

Fig. 7 is a partial cross-sectional view of the security door lock for home appliances according to the present invention.

Detailed Description

Specific embodiments of the present invention will be described in further detail below based on the drawings. It should be understood that the description herein of embodiments of the utility model is not intended to limit the scope of the utility model.

Referring to fig. 1 to 3, the household appliance security door lock provided by the present invention includes a base 1, a door hook 2 rotatably disposed in the base 1, a first slider 3 slidably disposed in the base 1 and capable of moving toward or away from the door hook 2, an electromagnetic switch box 4 disposed on a side of the first slider 3 away from the base 1, and a second slider 5 disposed between the electromagnetic switch box 4 and the base 1.

The inner side of the base 1 is provided with a first sliding chute 11 and a second sliding chute 12 in parallel, the first sliding block 3 is slidably positioned in the first sliding chute 11, and the second sliding block 5 is slidably positioned in the second sliding chute 12. The base 1 is provided with a door locking opening 13 corresponding to the door hook 2 for a projection on an external door to extend into. A first elastic piece is arranged between the first sliding block 3 and the side wall of the base 1, and a second elastic piece is arranged between the second sliding block 5 and the side wall of the base 1.

When the convex block extends into the door lock opening 13, the door hook 2 is driven to rotate, at the moment, a space is left below the door hook 2, and the first sliding block 3 extends into the lower part of the door hook 2 under the elastic action of the first elastic piece; at the same time, the lug pushes the second slide block 5 to move away from the door hook 2. The door hook 2 hooks the external projection.

The middle part of the first sliding block 3 is provided with a limiting opening 31.

The electromagnetic switch box 4 includes a box base 41, a box upper cover 42 disposed opposite to the box base 41, a stationary contact 43 disposed in the box base 41, a movable spring 44 disposed in the box base 41 and opposite to the stationary contact 43, a locking block 45 movably protruding from the bottom surface of the box base 41, and a push rod 46 located on one side of the movable spring 44 away from the box upper cover 42 and movably protruding from the bottom surface of the box base 41.

The middle part of the box base 41 is provided with a reed installing table 411, the middle part of the movable reed 44 is installed on the reed installing table 411, and the connection mode can be screw connection, rivet connection and the like.

A locking block opening 412 is formed in one side of the fixed contact 43 of the box base 41, and the locking block 45 is located in the locking block opening 412; an ejector rod opening 413 is formed between the fixed contact 43 and the reed mounting table 411, and the ejector rod 46 is located in the ejector rod opening 413.

When first slider 3 stretches into the below that the door colluded 2 under the elastic action of first elastic component, spacing mouthful 31 is relative with locking piece 45, and locking piece 45 stretches into spacing mouthful 31 under the action of gravity to can prevent first slider 3 to keep away from the door and collude 2 removal, and then prevent the door and collude 2 and rotate, make the door collude 2 and catch on the lug all the time.

Referring to fig. 4, an avoiding opening 451 is formed at a portion of the top end of the locking block 45 close to the movable spring 44, and an end portion of the movable spring 44 is movably located in the avoiding opening 451.

Referring to fig. 5, an overlapping sliding slot 32 is formed on a side of the top surface of the first slider 3 close to the second slider 5, an acting protrusion 51 is protruded from a middle portion of the second slider 5 close to the first slider 3, and the acting protrusion 51 is movably located in the overlapping sliding slot 32. The action projection 51 is provided with a guide slope 511, and the jack 46 is located above the action projection 51.

Referring to fig. 7, when the external protrusion is removed from the door lock opening 13, the second sliding block 5 moves toward the door lock opening 13 under the elastic action of the second elastic member, the guiding inclined surface 511 and the push rod 46 act, so as to push up the push rod 46, and the push rod 46 further pushes up the movable spring 44, so that the movable spring 44 is separated from the stationary contact 43.

The effect projection 51 and the first sliding block 3 are arranged in an overlapping manner, so that the installation space is reduced, and the structure is more compact and smaller.

Since the push rod 46 is located between the fixed contact 43 and the reed installing table 411, in order to further improve the ejecting effect and efficiency, the push rod 46 is configured as follows: the spring contact type lifting device comprises a generally cylindrical jacking rod main body 461 and a jacking block 462 connected with the top end of the jacking rod main body 461, wherein the jacking block 462 protrudes and extends towards the fixed contact 43, and the tail end of the jacking block 462 is arranged in an upward inclined manner, so that when the jacking rod main body 461 moves upwards, the tail end of the jacking block 462 far away from the jacking rod main body 461 abuts against the part of the movable spring 44 close to the fixed contact 43 instead of directly abutting against the part of the movable spring 44 between the fixed contact 43 and the spring mounting table 411.

Referring to fig. 6, a first pushing inclined surface 21 is disposed at the bottom of the door hook 2, and a second pushing inclined surface 34 is disposed at one corner of the first slider 3 near the end of the door hook 2 corresponding to the first pushing inclined surface 21. When the door hook 2 rotates, the first pushing inclined surface 21 contacts with the second pushing inclined surface 34 and acts, so that the first sliding block 3 moves correspondingly.

The bottom surface of the first slider 3 is provided with a first guide groove 33, and the bottom surface of the second slider 5 is provided with a second guide groove 52.

Referring to fig. 2 again, a first guide rail 111 is protruded from the first sliding chute 11, a second guide rail 121 is protruded from the second sliding 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.

Compared with the prior art, the household appliance safety door lock comprises a base 1, a door hook 2 rotationally arranged in the base 1, a first sliding block 3 which is slidably arranged in the base 1 and can be close to or far away from the door hook 2, an electromagnetic switch box 4 positioned on one side of the first sliding block 3 far away from the base 1, and a second sliding block 5 arranged between the electromagnetic switch box 4 and the base 1; a door locking opening 13 is formed in the position, corresponding to the door hook 2, of the base 1, and a limiting opening 31 is formed in the middle of the first sliding block 3; the electromagnetic switch box 4 comprises a box base 41, a fixed contact 43 arranged in the box base 41, a movable spring 44 arranged in the box base 41 and opposite to the fixed contact 43, a locking block 45 movably protruding out of the bottom surface of the box base 41, and an ejector rod 46 positioned on one side of the movable spring 44 far away from the box upper cover 42 and movably protruding out of the bottom surface of the box base 41; the limiting opening 31 is movably opposite to the locking block 45, one side of the second sliding block 5 is provided with an acting convex block 51 in a protruding mode, a guide inclined plane 511 is arranged on the acting convex block 51, and the ejector rod 46 is located above the acting convex block 51. Therefore, the service state of the gate can be truly corresponded, the conduction or disconnection of the conduction circuit is controlled, and the safety is improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and any modifications, equivalents or improvements that are within the spirit of the present invention are intended to be covered by the following claims.

Claims

1. A household electrical appliances safety lock which characterized in that: the door lock comprises a base, a door hook rotationally arranged in the base, a first sliding block which is slidably arranged in the base and can be close to or far away from the door hook, an electromagnetic switch box positioned on one side of the first sliding block far away from the base, and a second sliding block arranged between the electromagnetic switch box and the base; a door lock opening is formed in the position, corresponding to the door hook, of the base, and a limiting opening is formed in the middle of the first sliding block; the electromagnetic switch box comprises a box base, a fixed contact arranged in the box base, a movable spring piece arranged in the box base and opposite to the fixed contact, a locking block movably protruding out of the bottom surface of the box base, and an ejector rod positioned on one side of the movable spring piece, which is far away from the upper cover of the box, and movably protruding out of the bottom surface of the box base; the limiting opening is movably opposite to the locking block, an acting convex block is arranged on one side of the second sliding block in a protruding mode, a guide inclined plane is arranged on the acting convex block, and the ejector rod is located above the acting convex block.

2. The security door lock of household electrical appliances of claim 1, characterized in that: the inner side of the base is provided with a first sliding groove and a second sliding groove in parallel, the first sliding block is slidably positioned in the first sliding groove, and the second sliding block is slidably positioned in the second sliding groove.

3. The security door lock of household electrical appliances of claim 2, characterized in that: a first elastic piece is arranged between the first sliding block and the side wall of the base.

4. The security door lock of household electrical appliances of claim 2, characterized in that: and a second elastic piece is arranged between the second sliding block and the side wall of the base.

5. The security door lock of household electrical appliances of claim 1, characterized in that: and a locking block opening is formed in one side of the box base, which is positioned at the static contact, and the locking block is positioned in the locking block opening.

6. The security door lock of household electrical appliances of claim 5, characterized in that: the part of the top end of the locking block close to the movable spring piece is provided with an avoiding opening, and the end part of the movable spring piece is movably positioned in the avoiding opening.

7. The security door lock of household electrical appliances of claim 1, characterized in that: the middle part of the box base is provided with a reed mounting platform, and the middle part of the movable reed is mounted on the reed mounting platform.

8. The home appliance security door lock of claim 7, wherein: an ejector rod opening is formed between the static contact and the reed mounting platform, and the ejector rod is located in the ejector rod opening.

9. The security door lock of household electrical appliances of claim 1, characterized in that: and an overlapping sliding groove is formed in the top surface of the first sliding block and one side of the first sliding block, which is close to the second sliding block, and the action convex block is movably positioned in the overlapping sliding groove.

10. The security door lock of household electrical appliances of claim 9, characterized in that: the ejector rod comprises an ejector rod main body and an ejector block connected with the top end of the ejector rod main body, the ejector block extends towards the fixed contact in a protruding mode, and the tail end of the ejector block is arranged in an upward inclined mode.