CN112554667A - Door lock for electric appliance - Google Patents

Abstract

The invention provides an electric appliance door lock, which comprises a base body, a shell, a locking body, a door opening connecting plate, a locking plate and a sliding block, wherein a buffer groove is arranged in the base body, the locking body is movably arranged in the buffer groove through a supporting shaft and can rotate around the axis of the supporting shaft, the tension direction of a tension spring on the locking body is the same as the insertion direction of a door hook during door closing, the door opening connecting plate is rotatably arranged in the base body, and the sliding block is arranged on one side of the door opening connecting plate and moves under the action of the door opening connecting plate; when the door is closed, the locking body moves to the locking position at one end of the buffer groove under the action of the door hook and the tension of the tension spring to lock the door hook, and meanwhile, the locking plate locks the locking body; when the door is opened, the locking body moves to the unlocking position at the other end of the buffer groove in the opposite direction of the tension spring under the action of the door hook and is separated from the door hook. The door can be closed only by providing a small door closing force, and the door is closed by an obvious suction feeling, so that the door closing hand feeling is improved.

Description

Door lock for electric appliance

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of door locks, in particular to a door lock of an electric appliance.

[ background of the invention ]

Household appliances, such as dishwashers, washing machines, refrigerators, etc., have doors, covers, hinges, etc., to allow loading or unloading. For the purpose of closing the door, the cover, the hinge, etc. operate in conjunction with the lock. Taking a dishwasher as an example, the door lock structure of the existing dishwasher generally adopts a mode of protruding a door lock catch outwards and adding a door lock to lock a door body. When the door is opened, the door can be opened by overcoming the locking force of the door lock. When the door is closed, the door body of the dish washing machine can be closed by applying almost locking force, and the door body does not have obvious suction feeling, so that a user can not feel whether the door is closed in place, and the door closing experience is poor.

[ summary of the invention ]

The invention aims to solve the problems in the prior art, and provides an electric appliance door lock which can be closed only by providing small door closing force, has obvious suction feeling when being closed and improves the hand feeling of closing the door.

In order to achieve the purpose, the invention provides an electric appliance door lock, which comprises a base body, a shell arranged outside the base body, a locking body which is arranged inside the base body and provided with a tension spring, a locking plate provided with a first spring and a sliding block provided with a second spring, wherein a buffer groove is formed in the base body; when the door is closed, the door hook firstly triggers the sliding block to be separated from abutting against the locking plate, the locking body moves to the locking position at one end of the buffer groove under the action of the door hook and the tension of the tension spring, then rotates to a door closing state around the axis of the supporting shaft, abuts against the door hook and provides a continuous inward door closing force; when the door is opened, the door hook is firstly separated from the abutting of the pair of sliding blocks, the sliding blocks reset and lock the locking plate, the locking body moves to the door opening position at the other end of the buffer groove in the opposite direction of the tension spring under the action of the door hook, the locking body is turned to the door opening state around the axis of the supporting shaft under the simultaneous action of the locking plate and the door hook, and the locking body and the door hook are separated.

Preferably, the door opening device further comprises a door opening connecting plate provided with a torsion spring, the outer wall of the base body is further provided with a through groove for extending one end of the door opening connecting plate, the door opening connecting plate can be rotatably arranged in the base body, the sliding block is arranged on one side of the door opening connecting plate and moves under the action of the door opening connecting plate, when the door is closed, the door hook firstly triggers the door opening connecting plate to abut against the door opening connecting plate, and under the action of the door closing connecting plate, the sliding block is separated from abutting against the locking plate; when opening the door, the door hook breaks away from earlier and leans on to closing the door connecting plate, and the connecting plate of closing the door resumes to the state of opening the door under the effect of torsional spring.

As preferred, the torsional spring sets up in the bottom of the connecting plate that opens the door, the outside extension in one side of the connecting plate that opens the door has first push pedal, and the opposite side has the briquetting, first push pedal stretches out the base member outside by leading to the groove, and when closing the door, the door hook offsets with first push pedal, promotes the connecting plate rotation that opens the door, and the slider moves lockplate one side towards keeping away from under the effect of briquetting, rotates the top to the first support of slider one side until the briquetting, and offsets with the top of first support and dies the slider lock.

Preferably, a driving inclined plane for controlling the sliding block to move is arranged below the end part of the pressing block, and a guiding inclined plane matched with the driving inclined plane is arranged above the first support.

Preferably, the locking body is of a C-shaped structure, one end of the locking body is provided with a locking hook portion, the other end of the locking body is provided with a locking protrusion, the locking hook portion extends out of the base body through the lock hole, when the locking body moves to the locking position, the locking hook portion is matched with the door hook to lock the door hook, the locking protrusion abuts against the locking plate to prevent the locking body from rotating, and the locking body is locked.

Preferably, the door hook has a groove into which a locking protrusion of the locking body is inserted.

Preferably, the locking protrusion has a limiting protrusion on an outer side thereof, the base has a limiting stepped groove therein for preventing the locking body from rotating, and when the limiting protrusion abuts against the limiting stepped groove, the locking body rotates to a limit position, and at this time, the locking body moves to the locking position under the insertion motion of the door hook and the tensile force of the tension spring.

Preferably, the locking plate has a lock groove on a side facing the slider, and the slider is inserted into the lock groove to lock the locking plate.

Preferably, the base is internally provided with a signal switch assembly, the signal switch assembly is provided with a fixed contact assembly and a movable contact assembly, the fixed contact assembly and the movable contact assembly send a door closing signal when contacting, and when the sliding block bounces, the movable contact assembly is separated from the contact with the fixed contact assembly under the abutting action of a second support on one side of the sliding block, and a door opening signal is sent.

The invention has the beneficial effects that: according to the invention, through the matching of the locking body, the door opening connecting plate, the locking plate, the sliding block and the like, the tension of the tension spring can be used as power when the door is closed, the door can be closed by a user only by providing a small door closing force, the unlocking can be realized by a large external force when the door is opened by overcoming the tension of the tension spring, and the door has obvious suction feeling when the door is closed, so that the door closing hand feeling is improved. And the door hook is integrally provided with no convex structure, so that the problem that the door hook scratches a user when in use can be avoided.

The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.

[ description of the drawings ]

FIG. 1 is a schematic structural diagram of an electric appliance door lock of the present invention;

FIG. 2 is a schematic top view of the inner structure of the door of the present invention in a closed state;

FIG. 3 is a schematic front view of the door of the present invention in a closed state;

FIG. 4 is a schematic bottom view of the door of the present invention in a closed position;

FIG. 5 is a schematic view of the AT-AT orientation of FIG. 4;

FIG. 6 is a schematic cross-sectional view of AZ-AZ of FIG. 4;

FIG. 7 is a schematic view in section of BA-BA of FIG. 4;

FIG. 8 is a schematic top view of the internal structure of the present invention in the open state;

FIG. 9 is a schematic front view of the present invention in the open door state;

FIG. 10 is a schematic bottom view of the present invention in the open position;

FIG. 11 is a schematic view of the AT '-AT' orientation of FIG. 10;

FIG. 12 is a schematic cross-sectional view of AZ '-AZ' of FIG. 10;

FIG. 13 is a schematic view in cross section of BA '-BA' of FIG. 10;

FIG. 14 is an exploded view of an appliance door lock in accordance with the present invention;

FIG. 15 is a schematic perspective view of a door opening connecting plate of the door lock for an electric appliance according to the present invention;

fig. 16 is a schematic perspective view of a slider of the door lock of an electrical appliance according to the present invention.

[ detailed description ] embodiments

Example 1

Referring to fig. 1 to 16, the door lock for electric appliances of the present invention comprises a base body 1, a housing 10 installed outside the base body 1, a locking body 2 equipped with a tension spring 20 and installed inside the base body 1, a door opening connecting plate 3 equipped with a torsion spring 30, a locking plate 4 equipped with a first spring 40, and a slider 5 equipped with a second spring 50, wherein a buffer groove 11 is provided in the base body 1, the locking body 2 is movably installed in the buffer groove 11 through a support shaft 21 and can rotate around the axis of the support shaft 21, the outer wall of the base body 1 is provided with a lock hole 101 through which the locking body 2 can extend to lock a door hook, and a through groove 102 through which one end of the door opening connecting plate 3 extends, the tension direction of the tension spring 20 to the locking body 2 is the same as the insertion direction of the door hook when the door is closed, the door opening connecting plate 3 is rotatably installed in the base body, the door opening connecting plate 3 moves;

when the door is closed, the door hook firstly triggers the door opening connecting plate 3 to abut against the door opening connecting plate, under the action of the door closing connecting plate 3, the sliding block 5 is separated from abutting against the locking plate 4, the locking body 2 moves to the locking position at one end of the buffer groove 11 under the action of the door hook and the tension of the tension spring 20, then rotates to a door closing state around the axis of the supporting shaft 21, abuts against the door hook and provides a continuous inward door closing force.

When opening the door, the door hook breaks away from earlier and leans on to closing door connecting plate 3, and the connecting plate 3 that closes the door restores to the state of opening the door under torsional spring 30's effect, and slider 5 resets and locks lockplate 4, and the locking body 2 is under the action of door hook, and after 20 tensile opposite directions removal of extension spring to the position of opening the door of the other end of dashpot 11, the locking body 2 was around the axis upset of back shaft 21 to the state of opening the door under lockplate 4 and door hook simultaneous action, and the locking body 2 and door hook realize breaking away from.

Further, referring to fig. 5-7, the locking body 2 is in a C-shaped structure, one end of the locking body has a locking hook portion 22, and the other end of the locking body has a locking protrusion 23, the locking hook portion 22 extends out of the base body 1 from the locking hole 101, when the locking body 2 moves to the locking position, the locking hook portion 22 is engaged with the door hook to lock the door hook, and the locking protrusion 23 abuts against the locking plate 4 to prevent the locking body 2 from rotating, so as to lock the locking body 2.

Furthermore, the door hook is provided with a groove for inserting the locking bulge 23 of the locking body 2, and the structure can ensure that the surface of the door hook has no convex structure, thereby avoiding the problem that the door hook scratches a user when in use.

Further, referring to fig. 5 to 7, the locking protrusion 23 has a limiting protrusion 24 on the outer side thereof, the limiting stepped groove 12 is formed in the base 1 to prevent the locking body 2 from rotating, and when the limiting protrusion 24 abuts against the limiting stepped groove 12, the locking body 2 rotates to a limiting position, and at this time, the locking body 2 moves to a locking position under the insertion action of the door hook and the pulling force of the tension spring 20.

Further, referring to fig. 2 and 15, the torsion spring 30 is disposed at the bottom of the door opening connecting plate 3, a first push plate 31 extends outwards from one side of the door opening connecting plate 3, a press block 32 is disposed at the other side of the door opening connecting plate, the first push plate 31 extends out of the base body 1 through the through groove 102, when the door is closed, the door hook abuts against the first push plate 31, the door opening connecting plate 3 is pushed to rotate, the slider 5 moves towards one side away from the lock plate 4 under the action of the press block 32, and the slider 5 moves towards the upper side of the first bracket 51 on one side of the slider 5 until the press block 32 rotates to the upper side of the first bracket 51 on one side of the slider. Specifically, in this embodiment, a driving inclined plane 320 for controlling the movement of the slider 5 is disposed below the end of the pressing block 32, and a guiding inclined plane 510 matched with the driving inclined plane 320 is disposed above the first bracket 51, so that a certain guiding function is achieved, and the matching action of the door opening connecting plate and the slider can be more stable.

Further, in the present embodiment, referring to fig. 2, the sliding block 5 and the locking plate 4 are locked by means of a plug-in fit locking, specifically, the locking plate 4 has a lock slot 41 on a side facing the sliding block 5, and when the sliding block 5 is sprung up and inserted into the lock slot 41, the locking plate 4 is locked. Of course, the slide block 5 may be provided with a groove, and the locking plate 4 may be provided with a projection to achieve the fitting locking.

Further, a signal switch assembly 6 is further arranged in the base body 1, a fixed contact assembly 61 and a movable contact assembly 62 are arranged on the signal switch assembly 6, when the fixed contact assembly 61 and the movable contact assembly 62 are in contact, a door closing signal is sent, when the sliding block 5 bounces, the movable contact assembly 62 is separated from contact with the fixed contact assembly 61 under the abutting action of the second support 52 on one side of the sliding block 5, and a door opening signal is sent.

Example 2

On the basis of the embodiment 1, the structure is simplified, the door opening connecting plate 3 serving as a conversion auxiliary linkage structure is removed, the door hook can directly drive the slider 5 to act, and other working principles are the same as those of the embodiment 1.

Specifically, in the present embodiment, an electric appliance door lock includes a base 1, a housing 10 installed outside the base 1, and a lock body 2 provided with a tension spring 20, a lock plate 4 provided with a first spring 40, and a slider 5 provided with a second spring 50, which are installed inside the base 1, wherein a buffer groove 11 is provided in the base 1, the lock body 2 is movably installed in the buffer groove 11 through a support shaft 21 and can rotate around the axis of the support shaft 21, the outer wall of the base 1 has a lock hole 101 through which the lock body 2 extends to lock a door hook, and the tension direction of the tension spring 20 on the lock body 2 is the same as the insertion direction of the door hook when the door is closed;

when the door is closed, the door hook firstly triggers the sliding block 5 to be separated from abutting against the locking plate 4, the locking body 2 moves to the locking position at one end of the buffer groove 11 under the action of the door hook and the tension of the tension spring 20, then rotates to a door closing state around the axis of the supporting shaft 21, abuts against the door hook and provides a continuous inward door closing force;

when the door is opened, the door hook is firstly separated from the abutting of the pair of sliding blocks 5, the sliding blocks 5 reset and lock the locking plate 4, the locking body 2 moves to the door opening position of the other end of the buffer groove 11 in the opposite direction of the tensile force of the tension spring 20 under the action of the door hook, the locking body 2 rotates around the axis of the supporting shaft 21 to be in a door opening state under the simultaneous action of the locking plate 4 and the door hook, and the locking body 2 and the door hook are separated.

The working principle of the invention (taking the embodiment 1 as an example) is as follows:

when the door is closed, the door hook firstly triggers the door opening connecting plate 3 to abut against the first push plate 31 thereof, so that the door opening connecting plate 3 rotates, under the action of the pressing block 32 of the door closing connecting plate 3, the slider 5 moves downwards and breaks away from the abutting against the lock groove 41 of the locking plate 4, the locking body 2 moves to the locking position at one end of the buffer groove 11 under the action of the door hook and the pulling force of the tension spring 20, then rotates to the door closing state around the axis of the supporting shaft 21, abuts against the door hook and provides a continuous inward door closing force, and after the locking plate 4 breaks away from the abutting against of the slider 5, the locking body 2 pops out to abut against the locking body 2 under the action of the first spring 40, so that the locking body 2 is locked, at this time, the door closing state is.

When opening the door, the door hook breaks away from earlier and leans on to the first push pedal 31 of the connecting plate 3 of closing the door, the connecting plate 3 of closing the door resumes to the state of opening the door under the effect of torsional spring 30, briquetting 32 breaks away from and leans on to slider 5, slider 5 resets and bounces and inserts the locked groove 41 and dies the lockplate 4 lock, locking body 2 is under the action of door hook, after to the tensile opposite direction removal of extension spring 20 to the position of opening the door of the other end of dashpot 11, locking body 2 is around the axis upset of back shaft 21 to the state of opening the door under the effect of lockplate 4 and door hook simultaneously, locking body 2 and door hook realize breaking away from, be the state of opening the door this moment, as shown.

The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.

Claims (9)

1. An electric appliance door lock is characterized in that: the door hook locking device comprises a base body (1), a shell (10) arranged outside the base body (1), a locking body (2) which is arranged inside the base body (1) and provided with a tension spring (20), a locking plate (4) provided with a first spring (40) and a sliding block (5) provided with a second spring (50), wherein a buffer groove (11) is formed in the base body (1), the locking body (2) is movably arranged in the buffer groove (11) through a support shaft (21) and can rotate around the axis of the support shaft (21), a locking hole (101) which can be used for extending out of the locking body (2) to lock a door hook is formed in the outer wall of the base body (1), and the tension direction of the tension spring (20) on the locking body (2) is the same as the insertion direction of the door hook during door closing;

when the door is closed, the door hook firstly triggers the sliding block (5) to be separated from abutting against the locking plate (4), the locking body (2) moves to the locking position at one end of the buffer groove (11) under the action of the door hook and the pulling force of the tension spring (20) and then rotates to a door closing state around the axis of the supporting shaft (21), and the locking body abuts against the door hook and provides a continuous inward door closing force;

when the door is opened, the door hook is separated from abutting against the sliding block (5), the sliding block (5) resets and locks the locking plate (4), the locking body (2) moves to the opposite direction of the tension spring (20) to the door opening position of the other end of the buffer groove (11) under the action of the door hook, the locking body (2) is turned to the door opening state around the axis of the supporting shaft (21) under the simultaneous action of the locking plate (4) and the door hook, and the locking body (2) and the door hook are separated.

2. An electrical appliance door lock as claimed in claim 1, wherein: the door opening mechanism is characterized by further comprising a door opening connecting plate (3) provided with a torsion spring (30), the outer wall of the base body (1) is further provided with a through groove (102) for one end of the door opening connecting plate (3) to extend out, the door opening connecting plate (3) can be rotatably arranged in the base body (1), the sliding block (5) is arranged on one side of the door opening connecting plate (3), the sliding block moves under the action of the door opening connecting plate (3), when the door is closed, the door hook firstly triggers the door opening connecting plate (3) to abut against the door opening connecting plate, and under the action of the door closing connecting plate (3), the sliding block (5) is separated from abutting; when opening the door, the door hook breaks away from earlier and leans on to closing door connecting plate (3), and closing door connecting plate (3) resumes to the state of opening the door under the effect of torsional spring (30).

3. An electrical appliance door lock as claimed in claim 2, wherein: torsional spring (30) set up in the bottom of connecting plate (3) opens the door, the outside extension in one side of connecting plate (3) opens the door has first push pedal (31), and the opposite side has briquetting (32), first push pedal (31) are stretched out base member (1) outside by logical groove (102), and when closing the door, the door hook offsets with first push pedal (31), promotes connecting plate (3) and rotates that opens the door, and slider (5) move towards keeping away from lockplate (4) one side under the effect of briquetting (32), rotates the top of first support (51) to slider (5) one side until briquetting (32), and offsets with the top of first support (51) and die slider (5) lock.

4. An electrical appliance door lock as claimed in claim 3, wherein: the lower part of the end part of the pressing block (32) is provided with a driving inclined plane (320) used for controlling the sliding block (5) to move, and the upper part of the first bracket (51) is provided with a guiding inclined plane (510) matched with the driving inclined plane (320).

5. An electrical appliance door lock as claimed in claim 1, wherein: the locking body (2) is C font structure, and one end has lock hook portion (22), and the other end has locking convex part (23), lock hook portion (22) are stretched out to base member (1) outside by lockhole (101), when locking body (2) remove to the lock position, lock hook portion (22) and door hook cooperate, lock the door hook, and lock convex part (23) and lockplate (4) counterbalance and prevent locking body (2) to rotate, lock locking body (2).

6. An electrical appliance door lock as claimed in claim 5, wherein: the door hook is provided with a groove for inserting a locking convex part (23) of the locking body (2).

7. An electrical appliance door lock as claimed in claim 5, wherein: the outside of locking bellying (23) has spacing bellying (24), be used for preventing the spacing ladder groove (12) of locking body (2) pivoted in base member (1), when spacing bellying (24) offseted with spacing ladder groove (12), locking body (2) rotate to extreme position, and at this moment, under the insertion action of door hook and the pulling force of extension spring (20), locking body (2) remove to the lock position.

8. An electrical appliance door lock as claimed in claim 1, wherein: one side of the locking plate (4) facing the sliding block (5) is provided with a lock groove (41), and when the sliding block (5) bounces and is inserted into the lock groove (41), the locking plate (4) is locked.

9. An electrical appliance door lock as claimed in claim 1, wherein: the door-opening mechanism is characterized in that a signal switch assembly (6) is further arranged in the base body (1), a fixed contact assembly (61) and a movable contact assembly (62) are arranged on the signal switch assembly (6), when the fixed contact assembly (61) is in contact with the movable contact assembly (62), a door-closing signal is sent, when the sliding block (5) bounces, the movable contact assembly (62) is separated from contact with the fixed contact assembly (61) under the abutting action of a second support (52) on one side of the sliding block (5), and a door-opening signal is sent.

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