CN211284942U - Door lock - Google Patents

Abstract

The application discloses a door lock, which comprises a shell, a locking module, an upper cover and a locking module, wherein the locking module adopts a cam structure; the cam structure is matched with a door hook; the door lock with the upper cover state detection function further comprises: a slider mechanism located between the housing and the locking module; the free end of the sliding block mechanism is matched with the upper cover or the lock module; one end of the outer door pin slides on the sliding block mechanism, and the other end of the outer door pin is matched with a circuit switch on the locking module; a track platform mechanism is arranged on the sliding block mechanism; when the outer door pin moves vertically, the top of the outer door pin touches the circuit switch to change the state of a circuit in the locking module; the upper cover is abutted against the sliding block mechanism, and the elastic mechanism is always kept in a compressed state. In this application embodiment, through the inner structure design, reach the function that detects the door lock upper cover and drop, improve washing machine security performance, in time report the mistake.

Description

Door lock

Technical Field

The application relates to the technical field of door locks, in particular to a door lock with an upper cover state detection function.

Background

The door lock of the prior drum washing machine has the phenomenon that the upper cover parts fall off, when the phenomenon occurs, the front door of the washing machine is tightly closed after the upper cover is abnormally fallen off, the door lock does not have the door locking function, but the washing machine judges that the front door is closed, and the washing program is normally carried out. Under the condition, the situations that the washing machine does not report errors, the front door can be opened during operation and the like occur, the falling of the upper cover part needs to be detected at the moment, if the upper cover is found to fall off, the errors are reported immediately and the washing program is stopped, so that safety accidents are prevented.

Disclosure of Invention

In order to solve the technical problem, the application provides a take lock of upper cover state detection function, through the inner structure design, reaches the function that detects the door lock upper cover and drops, improves washing machine security performance, in time reports the mistake.

The embodiment of the application provides a door lock, which is provided with an upper cover state self-checking structure.

Further, the upper cover state self-checking structure comprises:

the sliding block mechanism is positioned in the door lock; the free end of the slide block mechanism is abutted against the part to be detected;

the trigger circuit is positioned in the door lock;

an elastic mechanism is arranged between the sliding block mechanism and the shell of the door lock; under the switching of the opening and closing states of the door lock, the sliding block mechanism slides in the shell under the action of the elastic mechanism and touches the trigger circuit; and the triggering electric signal data of the triggering circuit is used as a basis for judging the state of the upper cover.

Further, the door lock comprises a shell, a locking module, an upper cover, an outer door pin and a locking module, wherein the shell and the upper cover form a cavity; the locking module is positioned in the cavity, and the locking module is arranged on the shell; the lock module adopts a cam structure; the cam structure is matched with a door hook;

one end of the outer door pin slides on the sliding block mechanism, and the other end of the outer door pin is matched with a circuit switch in the locking module; the sliding block mechanism is positioned between the shell and the locking module; the free end of the sliding block mechanism is matched with the upper cover or the lock module;

under the switching of the locking module, the sliding block mechanism slides in the shell and touches the bottom of the outer door pin; the outer door pin directly touches the trigger circuit.

Further, a track platform mechanism is arranged on the sliding block mechanism; the plane of the track platform mechanism is not completely parallel to the sliding direction of the sliding block mechanism; the bottom end of the outer door pin slides on the track platform mechanism; in the process that the outer door pin slides on the track platform mechanism, the upper end of the outer door pin touches the circuit switch to change the state of a circuit in the locking module;

the upper cover is abutted against the sliding block mechanism, and the elastic mechanism is always kept in a compressed state.

Further, the outer door pin moves vertically or rotates or moves obliquely during sliding.

Furthermore, the circuit switch adopts a reed contact type circuit connection switch, and the top of the circuit connection switch is matched with a circuit in the upper mold locking block.

Further, the plane of the track platform mechanism comprises:

at least one valley point and two peak points, and the valley point is located between the peak points; two slopes are formed between the valley point and the two peak points; the peak point close to the lock module is marked as a near-end peak point, and the peak point far away from the lock module is marked as a far-end peak point;

when the outer door pin slides to the valley point, the top end of the outer door pin does not trigger the circuit switch;

when the outer door pin slides to the peak point, the top end of the outer door pin triggers a circuit switch;

after the upper cover is fallen off, the outer door pin moves to the peak point at the far end under the action of the elastic mechanism, and the circuit switch is triggered.

Further, the plane of the track platform mechanism comprises:

at least one valley point and one peak point forming at least one slope;

when the outer door pin slides to the valley point, the top end of the outer door pin does not trigger the circuit switch;

when the outer door pin slides to the peak point, the top end of the outer door pin triggers a circuit switch;

after the upper cover is fallen off, the outer door pin moves to the peak point under the action of the elastic mechanism, and the circuit switch is triggered.

Further, the slider mechanism includes:

one side of the first sliding block mechanism, which is far away from the elastic mechanism, is propped against the upper cover module for limiting;

when the door hook does not enter, namely the door is not closed, the cam mechanism is always in contact with the first sliding block and compresses the first sliding block backwards, and the bottom of the outer door pin is located at a position close to a peak point;

when the door hook entered, namely when the door was closed, cam mechanism rotated the back, and the spacing region who supports first slider removed after rotating, and first slider mechanism slides to the cam direction under elastic mechanism's the effect of force, and the bottom of outer door pin is located valley point position this moment.

Further, the slider mechanism includes:

one side of the second sliding block mechanism, which is far away from the elastic mechanism, is propped and limited by the upper cover;

after the door hook is inserted into the cam structure, the free end of the second sliding block mechanism is ejected out by the door hook and moves towards the direction of compressing the elastic mechanism, the valley point of the second sliding block mechanism slides to the bottom of the outer door pin, and the circuit switch is closed;

when the slide block mechanism comprises a first slide block mechanism and a second slide block mechanism,

the bottom of the outer door pin is positioned on the track platform mechanisms of the first sliding block mechanism and the second sliding block mechanism at the same time;

the sliding tracks of the first sliding block mechanism and the second sliding block mechanism do not interfere with each other.

Further, the outer door pin is jacked into the upper locking module by the track platform, so that a circuit in the locking module is disconnected;

after the top of the outer door pin is released from the locking module, the circuit is closed.

Furthermore, the door lock with the upper cover state detection function also comprises a limiting elastic sheet;

an interaction force is formed between the bottom of the sliding block mechanism and the salient point of the limiting elastic sheet; the convex point of the limiting elastic sheet exerts an acting force ejected out towards the upper cover on the sliding block mechanism;

the upper cover is provided with a limiting block, and the limiting elastic sheet is pressed flat by the upper cover through the limiting block.

Further, the door lock with the upper cover state detection function further comprises a third sliding block;

the first sliding block mechanism or the second sliding block mechanism is positioned at two sides of the upper cover;

one end of the third sliding block is abutted and limited by the side wall of the upper cover and is opposite to one end of the first sliding block mechanism or the second sliding block mechanism, and the other end of the third sliding block is connected with the elastic mechanism which is kept in a compression state.

Furthermore, the circuit switch adopts a contact type plate spring switch positioned in the locking module, a contact matched with the plate spring is arranged in the upper locking module, and the bending action direction of the plate spring is consistent with the ejection direction of the outer door pin.

In the upper mold locking block, when the plate spring bends towards the direction departing from the contact, the trigger circuit switch is switched off; when the plate spring is bent towards the direction close to the contact, the trigger circuit switch is switched on.

In this application embodiment, through the inner structure design, reach the function that detects the door lock upper cover and drop, improve washing machine security performance, in time report the mistake.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a slider mechanism in cooperation with a lock module according to an embodiment of the present application;

FIG. 2 is a schematic view of a slider mechanism of the present application;

FIG. 3 is a schematic view of another slide mechanism of the present application;

FIG. 4 is a cross-sectional view of the track platform mechanism of FIG. 3;

FIG. 5 is a schematic illustration of the present application including a first slider mechanism and a second slider mechanism;

FIG. 6 is another angular schematic view of the present application;

FIG. 7 is a schematic illustration of the exploded structure of FIG. 5;

FIG. 8 is a schematic top view of the structure of FIG. 5;

FIG. 9 is a schematic view of the first slider mechanism in cooperation with the upper cover;

FIG. 10 is a top perspective view of the engagement of the third slider mechanism with the first slider mechanism in a conventional state;

FIG. 11 is a schematic cross-sectional view of FIG. 10;

FIG. 12 is a top perspective view of the engagement of the third slider mechanism with the first slider mechanism in an abnormal state;

FIG. 13 is a schematic cross-sectional view of FIG. 12;

FIG. 14 is a schematic view of an embodiment of a positioning spring;

fig. 15 is a schematic cross-sectional structure of fig. 14.

The meaning of the reference symbols in the figures:

100-locking module, 200-upper cover, 300-shell, 400-torsion spring, 500-cam structure, 600-door hook, 700-locking module, 800-elastic sheet, 322-slide block mechanism, 310-first slide block mechanism, 320-second slide block mechanism, 330-outer door pin, 340-third slide block mechanism, 311-first elastic mechanism, 321-second elastic mechanism, 341-third elastic mechanism, A-valley point and B-peak point.

Detailed Description

In order to make the purpose, features and advantages of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the embodiments described below are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The invention is further elucidated with reference to the drawings and the embodiments.

In the description of the present application, it is to be understood that the terms "upper", "lower", "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 application and simplifying the description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

The door lock with the upper cover state detection function in the application is characterized in that the upper cover 200 is matched with the sliding block fundamentally, the upper cover 200 is a limiting mechanism for the sliding block, once the upper cover 200 falls off, the sliding block can be caused to displace, a track platform is arranged on the sliding block, the top surface of the platform is sloped, the outer door pin 330 moves on the slope, the transverse displacement of the sliding block is converted into the longitudinal displacement of the outer door pin 330, the outer door pin 330 only moves longitudinally through the arrangement of an internal mechanism, so that a related trigger circuit is arranged at the top of the outer door pin 330, the falling of the upper cover 200 can be detected, and the alarm function is realized.

The lock module 700 to which the present application is directed employs a cam structure 500 and is matched with a door hook 600.

For convenience of description, the slope near the upper cover 200 is denoted as a proximal slope, and the corresponding slope at the other end is denoted as a distal slope. The motion principle of the first sliding block mechanism, the second sliding block mechanism and the third sliding block mechanism in the application is basically the same, and the first sliding block mechanism, the second sliding block mechanism and the third sliding block mechanism are only distinguished according to the position where the first sliding block mechanism, the second sliding block mechanism and the third sliding block mechanism are located, the shapes of the first sliding block mechanism, the second sliding block mechanism and the third sliding block mechanism are slightly different, and the first sliding block mechanism, the second sliding.

Example 1 — slide mode:

in this embodiment, the slider mechanism is provided with a distal end slope at the distal end, and an included angle between the slope direction and one side of the upper cover 200 is an obtuse angle.

The distal end of the slider mechanism has an elastic mechanism, i.e. a spring abuts against the elastic mechanism, an acting force moving towards the upper cover 200 is generated on the slider mechanism, when the upper cover 200 is not dropped, the upper cover 200 abuts against the movement of the slider mechanism, in the current state, the outer door pin 330 is not on a slope, when the upper cover 200 is dropped, the slider moves towards the upper cover 200, the slope moves to the bottom of the outer door pin 330, and the outer door pin 330 is lifted upwards, so that the top of the outer door pin 330 touches the circuit switch.

Specifically, as shown in fig. 1, in the initial position, the upper cover 200 is held on the assembly body, the slider mechanism is urged by the end spring, and the other end of the slider mechanism abuts against the limit position of the upper cover 200, and under normal conditions (where the upper cover 200 is not loosened), the slider position is not changed, and the spring is always in a compressed state.

When the upper cover 200 is loosened, the position of the upper cover 200 limits the limiting failure of the additional slide block, the slide block acts under the action of the compression spring on one side, the slope on the slide block interacts with the bottom end of the outer door pin 330, the circuit switch is opened on the top, the circuit in the door lock is switched on and off, and the washing machine reports errors.

Embodiment 2 — normal door opening and closing function on the locking slider:

in this embodiment, the slider mechanism does not merely detect whether the upper cover 200 is detached. Generally, if the slider mechanism has only one function of detecting the falling of the upper cover 200, the overall structure of the lock is greatly increased, the cost is increased, and the product to be applied needs to be completely overturned and remade, so that the slider mechanism has a plurality of negative effects on the aspect of quantitative production.

Therefore, the slider mechanism adds the door lock state, and the detection of the door lock state is also the content in the prior art.

In this embodiment, as shown in fig. 2, two slopes are disposed on the slider mechanism, and the two slopes are disposed opposite to each other, and are respectively denoted as a distal slope and a proximal slope, similar to the structure of the ship body.

When the sliding mechanism is used, the sliding mechanism is still supported by the upper cover 200, but a part of the bottom of the near end of the sliding mechanism still extends into the lock structure, and the near end of the sliding mechanism supports against the cam structure 500, the cam structure 500 rotates when the door hook 600 enters, and the rotating surface contacts with the near end of the sliding mechanism, most preferably, the near end is located on the rotating surface, the rotation of the cam structure 500 drives the sliding mechanism to slide, so that the sliding mechanism slides in the direction deviating from the upper cover 200, and the slope of the near end moves to the bottom of the ejection structure, and the circuit switch is triggered. This action is used to detect whether the door lock is functioning properly.

Example 3-normal door opening and closing function on door slider:

in the embodiment, the slider mechanism adds the door lock state, and the detection of the door lock state is also the content in the prior art.

In this embodiment, two slopes are arranged on the slider mechanism, and the two slopes are arranged oppositely, and are similar to the structure of a ship body and are respectively marked as a far-end slope and a near-end slope.

Unlike embodiment 2, as shown in fig. 3 and 4, the slider mechanism is matched with the cam structure 500, in this embodiment, the slider mechanism is still supported by the upper cover 200, but a part of the bottom of the proximal end of the slider mechanism still extends into the lock structure, and the proximal end is suspended and matched with the door hook 600, the contact surface between the outer door pin 330 and the slider mechanism adopts an inclined plane, the slider mechanism slides due to the entrance of the door hook 600, so that the slider mechanism slides in the direction away from the upper cover 200, and the proximal end is inclined to the bottom of the ejection structure, thereby triggering the circuit switch. This action is used to detect whether the hook 600 of the door lock is normally inserted into the door lock.

Example 4-two slides combined with each other:

as shown in fig. 5-8, in this embodiment, embodiment 2 and embodiment 3 are combined, wherein two ramps are adopted in embodiment 2 and embodiment 3, and the proximal end ramps are both used for cooperating with the inside of the lock structure to detect whether a state of closing the door exists, so that one ramp can be cancelled, only one ramp can be reserved, or both ramps can be reserved to realize the function of double insurance.

Example 5-protocol of shrapnel 800:

referring to fig. 14, in the present embodiment, a limiting elastic sheet 800 is disposed at the bottom of the slider mechanism, and the single limiting elastic sheet 800 is in a bent state, and is mounted on the top of the slider mechanism, and is kept horizontal under the pressing action of the upper cover 200, wherein the limiting salient point of the limiting elastic sheet 800 is located at the bottom of the slider mechanism.

The limiting elastic piece 800 has two states:

the state 1 is a release state, when the upper cover 200 is loosened, the limit salient point in the middle of the elastic sheet 800 protrudes upwards to block the limit groove of the door slider. Locking the door slider against movement

The state 2 is a compression state, the position of the upper cover 200 is normal, the limit salient point in the middle of the elastic sheet 800 is compressed to a lower point of the position, the normal movement of the door sliding block is not influenced, and the door lock works normally.

Meanwhile, the limiting elastic sheet 800 can be a part alone or integrated with the bottom case of the door lock, and is a part of the bottom case.

When the upper cover 200 is not loosened, and is in a normal position, the slider mechanism works normally and is driven by the door hook 600 entering the lock opening to move back and forth, and the slope on the slider mechanism triggers the outer door pin 330 to be normally switched on and off.

When the upper cover 200 is loosened, the limiting block contacted with the limiting elastic sheet 800 on the upper cover 200 is loosened, the limiting elastic sheet 800 upwards is in an arc shape and is pushed open, the limiting convex point on the limiting elastic sheet 800 rises and is clamped into the limiting groove at the bottom of the door sliding block, and the sliding block mechanism is locked by a mechanical structure and cannot move. When the door is closed again, the door hook 600 cannot push the sliding block mechanism to act after entering, the door cannot be normally closed, meanwhile, the slope on the sliding block mechanism and the outer door pin 330 keep the open-close signal on-off state of the door, the circuit recognizes that the door is not closed, the washing machine cannot operate, and the error is reported.

EXAMPLE 6 additional slider mode

In this embodiment, another external slider mechanism is provided, and is marked as an additional slider to be matched.

The slider mechanism of the previous embodiments is used in conjunction with additional sliders. The slider mechanism of the previous embodiment, however, only retains the proximal bevel.

When the door lock is normal, the extra sliding block is blocked by the upper cover 200 and cannot act, and the extra sliding block spring is always in a compressed state.

When the door lock upper cover 200 is released, the position restriction of the upper cover 200 to the additional slider is removed, and the additional slider may act on the first slider in the horizontal direction and push the locking slider to move backward.

After the locking slider moves backwards, the slope on the slider triggers the outer door pin 330 to realize signal switching, and the washing machine reports errors and stops running.

Through this structure, can give the different testing results of same inclined plane, the normal switching of lock and whether upper cover 200 drops realize detecting by same inclined plane.

Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the details of the foregoing embodiments, and various equivalent changes (such as number, shape, position, etc.) may be made to the technical solution of the present invention within the technical spirit of the present invention, and the equivalents are protected by the present invention.

Claims (13)

1. A door lock is characterized in that the door lock is provided with an upper cover state self-checking structure;

the upper cover state self-checking structure comprises:

the sliding block mechanism is positioned in the door lock; the free end of the slide block mechanism is abutted against the part to be detected;

the trigger circuit is positioned in the door lock;

an elastic mechanism is arranged between the sliding block mechanism and the shell of the door lock; under the switching of the opening and closing states of the door lock, the sliding block mechanism slides in the shell under the action of the elastic mechanism and touches the trigger circuit; and the triggering electric signal data of the triggering circuit is used as a basis for judging the state of the upper cover.

2. The door lock according to claim 1, wherein:

the lock comprises a shell, a locking module, an upper cover, an outer door pin and a locking module, wherein a cavity is formed between the shell and the upper cover; the locking module is positioned in the cavity, and the locking module is arranged on the shell; the lock module adopts a cam structure; the cam structure is matched with a door hook;

one end of the outer door pin slides on the sliding block mechanism, and the other end of the outer door pin is matched with a circuit switch in the locking module; the sliding block mechanism is positioned between the shell and the locking module; the free end of the sliding block mechanism is matched with the upper cover or the lock module;

under the switching of the locking module, the sliding block mechanism slides in the shell and touches the bottom of the outer door pin; the outer door pin directly touches the trigger circuit.

3. The door lock according to claim 2, wherein:

a track platform mechanism is arranged on the sliding block mechanism; the plane of the track platform mechanism is not completely parallel to the sliding direction of the sliding block mechanism; the bottom end of the outer door pin slides on the track platform mechanism; in the process that the outer door pin slides on the track platform mechanism, the upper end of the outer door pin touches the circuit switch to change the state of a circuit in the locking module;

the upper cover is abutted against the sliding block mechanism, and the elastic mechanism is always kept in a compressed state.

4. The door lock according to claim 3, wherein: the outer door pin moves vertically or rotates or moves obliquely in the sliding process.

5. The door lock according to claim 4,

the circuit switch adopts a reed contact type circuit connection switch, and the top of the circuit connection switch is matched with a circuit in the upper mold locking block.

6. The door lock according to claim 3,

the plane of the track platform mechanism comprises:

at least one valley point and two peak points, and the valley point is located between the peak points; two slopes are formed between the valley point and the two peak points; the peak point close to the lock module is marked as a near-end peak point, and the peak point far away from the lock module is marked as a far-end peak point;

when the outer door pin slides to the valley point, the top end of the outer door pin does not trigger the circuit switch;

when the outer door pin slides to the peak point, the top end of the outer door pin triggers a circuit switch;

after the upper cover is fallen off, the outer door pin moves to the peak point at the far end under the action of the elastic mechanism, and the circuit switch is triggered.

7. The door lock according to claim 3,

the plane of the track platform mechanism comprises:

at least one valley point and one peak point forming at least one slope;

when the outer door pin slides to the valley point, the top end of the outer door pin does not trigger the circuit switch;

when the outer door pin slides to the peak point, the top end of the outer door pin triggers a circuit switch;

after the upper cover is fallen off, the outer door pin moves to the peak point under the action of the elastic mechanism, and the circuit switch is triggered.

8. The door lock according to claim 3,

the slider mechanism includes:

one side of the first sliding block mechanism, which is far away from the elastic mechanism, is propped against the upper cover module for limiting;

when the door hook does not enter, namely the door is not closed, the cam mechanism is always in contact with the first sliding block and compresses the first sliding block backwards, and the bottom of the outer door pin is located at a position close to a peak point;

when the door hook entered, namely when the door was closed, cam mechanism rotated the back, and the spacing region who supports first slider removed after rotating, and first slider mechanism slides to the cam direction under elastic mechanism's the effect of force, and the bottom of outer door pin is located valley point position this moment.

9. The door lock according to claim 7 or 8,

the slider mechanism includes:

one side of the second sliding block mechanism, which is far away from the elastic mechanism, is propped and limited by the upper cover;

after the door hook is inserted into the cam structure, the free end of the second sliding block mechanism is ejected out by the door hook and moves towards the direction of compressing the elastic mechanism, the valley point of the second sliding block mechanism slides to the bottom of the outer door pin, and the circuit switch is closed;

when the slide block mechanism comprises a first slide block mechanism and a second slide block mechanism,

the bottom of the outer door pin is positioned on the track platform mechanisms of the first sliding block mechanism and the second sliding block mechanism at the same time;

the sliding tracks of the first sliding block mechanism and the second sliding block mechanism do not interfere with each other.

10. The door lock according to claim 3,

the outer door pin is jacked into the upper locking module by the track platform so that a circuit in the locking module is disconnected;

after the top of the outer door pin is released from the locking module, the circuit is closed.

11. The door lock according to claim 3,

the door lock with the upper cover state detection function further comprises a limiting elastic sheet;

an interaction force is formed between the bottom of the sliding block mechanism and the salient point of the limiting elastic sheet; the convex point of the limiting elastic sheet exerts an acting force ejected out towards the upper cover on the sliding block mechanism;

the upper cover is provided with a limiting block, and the limiting elastic sheet is pressed flat by the upper cover through the limiting block.

12. The door lock according to claim 9,

the door lock with the upper cover state detection function further comprises a third sliding block;

the first sliding block mechanism or the second sliding block mechanism is positioned at two sides of the upper cover;

one end of the third sliding block is abutted and limited by the side wall of the upper cover and is opposite to one end of the first sliding block mechanism or the second sliding block mechanism, and the other end of the third sliding block is connected with the elastic mechanism which is kept in a compression state.

13. The door lock according to claim 3,

the circuit switch adopts a contact type plate spring switch positioned in the locking module, a contact matched with a plate spring is arranged in the upper locking module, and the bending action direction of the plate spring is consistent with the ejection direction of the outer door pin;

in the upper mold locking block, when the plate spring bends towards the direction departing from the contact, the trigger circuit switch is switched off; when the plate spring is bent towards the direction close to the contact, the trigger circuit switch is switched on.

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