CN212027433U

CN212027433U - Door lock for household electrical appliance

Info

Publication number: CN212027433U
Application number: CN201922398443.1U
Authority: CN
Inventors: 竺建军; 何凯
Original assignee: Hangzhou Kambayashi Electronics Co Ltd
Current assignee: Hangzhou Kambayashi Electronics Co Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-11-27
Anticipated expiration: 2029-12-27

Abstract

The utility model provides a door lock for household appliances, which is arranged on an appliance box body, the door lock device is provided with a lock hole for inserting a lock head, the door lock device is provided with a base body, a pressing block, a locking body provided with a locking body torsional spring, an operating plate provided with an operating plate torsional spring, a swinging rod and a detection switch, the locking body is rotatably arranged in the base body, the pressing block and the operating plate are movably arranged in the base body in a connecting way, can move along the insertion direction of the lock head, when the lock head is inserted into the lock hole, the press block moves under the abutting action of the lock head, the locking body rotates under the action of the pressing block, the swing rod is rotatably arranged in the base body and arranged between the operating plate and the detection switch, the swing rod rotates to trigger the detection switch under the driving of the operating panel, and after the lock head is pulled out of the lock hole, the pressing block abuts against the lock hole to be matched with the lock hole to block the lock hole under the action of the torsional spring of the operating panel. The door lock device can avoid false triggering of the door lock, is attractive in whole and free of lock hole exposure.

Description

Door lock for household electrical appliance

[ technical field ] A method for producing a semiconductor device

The utility model relates to a technical field of lock, especially a domestic appliance lock.

[ background of the invention ]

After the existing door lock structure is installed on a household appliance, as shown in the attached drawing 1, when the door lock is seen from the outside of the appliance, an obvious lock hole is formed in the position of the door lock, and the lock hole has the following problems:

1. a lock hole is exposed on the appearance surface to influence the aesthetic degree of the electric appliance.

2. The lockhole is exposed outside, foreign matters, dust and the like easily enter the lockhole and are not easy to take out, so that the blockage is caused, and the normal action of the door lock is influenced.

3. When a large amount of water stains exist in the lock hole, water easily permeates into the door lock from the lock hole, so that the door lock is damaged, and water is accumulated inside the electric appliance.

4. When the door is not closed, the user may manually trigger the door lock to the locked state, which may cause the appliance to start when the door is not closed.

[ Utility model ] content

The utility model discloses an aim at solving the problem among the prior art, provide a domestic appliance lock, can avoid the lock spurious triggering, wholly pleasing to the eye, no lockhole exposes.

In order to achieve the above object, the present invention provides a door lock for household appliances, the door lock device is installed on an appliance box body, the door lock device is provided with a lock hole for inserting a lock head, the door lock device is provided with a base body, a pressing block, a locking body provided with a torsional spring of the locking body, an operating plate provided with a torsional spring of the operating plate, a swing rod and a detection switch, the locking body is rotatably arranged in the base body, the pressing block is movably installed in the base body in a connecting manner with the operating plate and can move along the insertion direction of the lock head, when the lock head is inserted into the lock hole, the pressing block moves under the abutting action of the lock head, the locking body rotates under the action of the pressing block, the swing rod is rotatably installed in the base body, the swing rod is arranged between the operating plate and the detection switch, the swing rod rotates to trigger the detection switch under the driving of the operating plate, after the lock head, under the action of the torsional spring of the operating panel, the pressing block abuts against the lock hole to be matched with and block the lock hole.

As preferred, spring bolt and crank have on the locking body, have between spring bolt and the crank and be approximate to the bayonet socket of U font, the crank sets up under the lockhole, during tapered end male lockhole, the crank leans on the cooperation with the briquetting counterbalance, and the locking body rotates under the effect of briquetting, and the crank has to the briquetting insert opposite direction's effort with the tapered end, have in the tapered end with spring bolt matched with locking groove, the locking body rotates under the effect of crank, and the spring bolt card is gone into the locking groove.

Preferably, one side of the pressing block close to the crank is provided with a step, the step abuts against the crank to drive the locking body to rotate in a matched mode, a sealing plate used for sealing the lock hole is arranged above the pressing block, the upper end face of the sealing plate is an appearance face, a clamping groove is formed in the lower portion of the sealing plate, and a sealing strip is installed on the clamping groove.

Preferably, the swing rod is rotatably mounted on one side of the detection switch, a protruding portion is arranged on one side of the swing rod close to the operating plate, a pushing block matched with the protruding portion in an abutting mode is arranged on one side of the operating plate, and the swing rod rotates towards one side close to the detection switch to trigger the detection switch under the action of the pushing block.

Preferably, the pressing block is connected with the operating plate through a sliding rod, a guide cavity for the sliding rod to move in the insertion direction of the lock head is formed in the base body, an O-shaped ring is installed in the guide cavity, and the O-shaped ring is tightly matched with the sliding rod.

Preferably, a locking body shell is further arranged in the base body, the locking body is rotatably arranged in the locking body shell, a locking hole is formed in the locking body shell, an upper locking body cover is further arranged on the locking body shell, and the base body is further provided with a shell.

The utility model has the advantages that: the utility model can block the lock hole under the action of the torsional spring of the operation panel under the condition that the door cover is not closed by the matching of the pressing block, the locking body, the operation panel, the swing rod, the detection switch and the like, thereby ensuring the integral beauty without exposing the lock hole, reducing the foreign matters, dust and the like entering the lock hole, and avoiding the water stain from permeating into the lock hole to damage the door lock; when the cover door is not closed and a foreign body which is not a door hook is inserted into the lock hole, the detection switch cannot be touched to be in a locking state, and the electric appliance can be prevented from being started by mistake.

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

[ description of the drawings ]

FIG. 1 is a cross-sectional view of a prior art door lock installed in an appliance;

FIG. 2 is a sectional view of the door lock device according to the present invention before the door closing cover;

FIG. 3 is a sectional view of the door locking device according to the present invention;

FIG. 4 is a sectional view of the door lock device according to the present invention after the door is closed;

fig. 5 is a sectional view of the door lock device according to the present invention when the door is opened;

fig. 6 is a sectional view showing the door lock device according to the present invention in an abnormal state;

fig. 7 is an exploded view of the door lock device of the present invention;

fig. 8 is a structural view of a pressing block of the door lock device of the present invention;

fig. 9 is a structural view of a lock body of the door lock device according to the present invention.

Corresponding labels in the figures: 100 household appliances, 101 door covers, 102 appliance boxes, 103 existing door locks, 104 door hooks, 105 tapered ends, 106 lock holes, 200 door lock devices, 210 base bodies, 220 shells, 230 pressing blocks, 231 clamping grooves, 232 steps, 233 sealing plates, 240 locking bodies, 241 locking tongues, 242 cranks, 250 locking body torsion springs, 270 sealing strips, 280O-shaped rings, 290 operating plates, 300 swing rods, 310 operating plate torsion springs, 320 detection switches, 330 locking body shells and 340 locking body upper covers.

[ detailed description ] embodiments

Referring to fig. 2 to 7, the door lock device 200 of the present invention is installed on an electrical appliance box 102, the door lock device 200 has a lock hole 106 for inserting a lock head 105, the door lock device 200 is provided with a base 210, a pressing block 230, a lock body 240 provided with a lock body torsion spring 250, an operation plate 290 provided with an operation plate torsion spring 310, a swing link 300 and a detection switch 320, the lock body 240 is rotatably installed in the base 210, the pressing block 230 is movably installed in the base 210 in connection with the operation plate 290 and can move along an insertion direction of the lock head 105, when the lock head 105 is inserted into the lock hole 106, the pressing block 230 moves under the abutting action of the lock head 105, the lock body 240 rotates under the action of the pressing block 230, the swing link 300 is rotatably installed in the base 210, the swing link 300 is installed between the operation plate 290 and the detection switch 320, the swing link 300 rotates to trigger the detection switch 320 under the driving of the operation plate 290, after the locking head 105 is pulled out of the locking hole 106, the operating plate torsion spring 310 exerts an acting force on the operating plate 290, which is opposite to the insertion direction of the locking head 105, and under the action of the operating plate torsion spring 310, the pressing block 230 abuts against the locking hole 106 to be matched with the locking hole 106 to block the locking hole 106.

Further, referring to fig. 9, the locking body 240 is provided with a locking tongue 241 and a crank 242, an approximately U-shaped bayonet is provided between the locking tongue 241 and the crank 242, the crank 242 is disposed right below the locking hole 106, when the locking head 105 is inserted into the locking hole 106, the crank 242 abuts against and is matched with the pressing block 230, the locking body 240 rotates under the action of the pressing block 230, the crank 242 has an acting force opposite to the insertion direction of the locking head 105 on the pressing block 230, a locking groove matched with the locking tongue 241 is provided in the locking head 105, and the locking body 240 rotates under the action of the crank 242, so that the locking tongue 241 is locked into the locking groove.

Further, referring to fig. 8, a step 232 is arranged on one side of the pressing block 230 close to the crank 242, the step 232 and the crank 242 abut against and are matched to drive the locking body 240 to rotate, a sealing plate 233 used for sealing the lock hole 106 is arranged above the pressing block 230, the upper end surface of the sealing plate 233 is an appearance surface, a clamping groove 231 is arranged below the sealing plate 233, and a sealing strip 270 is mounted on the clamping groove 231.

Further, the swing rod 300 is rotatably installed at one side of the detection switch 320, one side of the swing rod 300, which is close to the operation plate 290, is provided with a protrusion, one side of the operation plate 290 is provided with a push block, which is abutted against the protrusion, after the lock head 105 is completely inserted into the lock hole 106, the protrusion and the push block are in an abutted state, and under the action of the push block, the swing rod 300 rotates towards one side close to the detection switch 320 to trigger the detection switch 320. When the push block is disengaged from the protrusion, the swing link 300 does not trigger the detection switch 320. When a foreign body which is not a door hook is inserted into the lock hole, the push block and the protruding part are separated from the abutting state, the detection switch cannot be triggered to the locking state, and the problem that the electrical appliance is started by mistake when the door cover is not closed can be avoided.

Further, the pressing block 230 is connected with the operating panel 290 through a sliding rod, a guide cavity for the sliding rod to move along the insertion direction of the lock head 105 is formed in the base body 210, an O-shaped ring 280 is installed in the guide cavity, the O-shaped ring 280 is tightly matched with the sliding rod, the connection tightness can be improved, and water stain is prevented from entering an electric appliance.

Further, a locking body housing 330 is further disposed in the base 210, the locking body 240 is rotatably mounted in the locking body housing 330, the locking body housing 330 has a lock hole 106, the locking body housing 330 is further mounted with a locking body upper cover 340, and the base 210 is further mounted with a housing 220.

The utility model discloses the working process:

the utility model relates to a domestic appliance lock's theory of operation as follows:

open state of door

As shown in fig. 2, in the door-open state, the sealing strip 270 is installed in the slot 231 of the pressing block 230, and under the action of the torsion spring 310 of the operating panel, an upward acting force is exerted on the operating panel 290 and the pressing block 230, and the sealing plate 233 tightly contacts the sealing strip 270 with the housing 210 of the door lock, so as to achieve the waterproof function. The sealing plate 233 is flush with the case of the electric appliance and is seamlessly connected to prevent the entry of foreign matters and dusts.

Door closing action

As shown in fig. 3, when the door cover is closed, the locking head 105 moves downward along the direction a, the locking head 105 presses the pressing block 230 to move downward, after the step 232 of the pressing block 230 contacts the crank 242 of the locking body 240, the locking body 240 is driven to overcome the torsion of the torsion spring 250 of the locking body and rotate along the direction B, the distance of the torsion spring is reduced, after the locking body 240 rotates to a certain angle, the distance of the torsion spring is reduced to the minimum, after the locking body continues to move, the distance of the torsion spring begins to increase again, the direction of the torsion force begins to turn over, and at this time, the locking tongue 241 acts on the locking head 105, so that the. When the door cover is closed, the lock head 105 has an upward force to prevent the operating plate 290 from continuing to move downward, and simultaneously prevent the operating plate torsion spring 310 from continuing to turn over, at this time, the push block of the operating plate 290 is in a state of abutting against the convex part of the swing rod 300, and the operating plate 290 drives the swing rod 300 to rotate, so as to trigger the detection switch 320.

Abnormal operation

As shown in fig. 6, when the door cover is not closed, if the pressing block 230 is manually pressed downward at this time, the operation plate torsion spring 310 reaches the turning point under the action of force, and since the lock head 105 is not provided at this time, the turning of the operation plate torsion spring 310 cannot be blocked, so that the operation plate 290 continues to move downward under the driving of the operation plate torsion spring 310 until the operation plate 290 reaches the bottom end, the pushing block of the operation plate 290 and the protruding portion of the swing rod 300 are in a state of being disengaged and abutted, and the detection switch 320 cannot be triggered.

Door opening action

Fig. 5, when the locking head 105 is pulled upwards along the direction C, the locking head 105 acts on the locking tongue 241 to force the locking body 240 to rotate along the direction D against the torsion of the locking body torsion spring 250, the crank 242 of the locking body 240 acts on the step 232 of the pressing block 230 to move the sealing plate upwards, after the locking body 240 rotates, the distance of the locking body torsion spring 250 decreases, after the locking body 240 rotates to a certain angle, the distance of the locking body torsion spring 250 decreases to the minimum, after the locking body 240 continues to move, the distance of the locking body torsion spring 250 starts to increase again, the torsion direction starts to turn over, and under the action of the door opening force and the torsion of the locking body torsion spring 250, the door opening is. At this time, the sealing plate 233 seals the locking hole under the action of the operation plate torsion spring 310.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims

1. A household appliance door lock, the door lock device (200) is installed on the appliance box body (102), the door lock device (200) is provided with a lock hole (106) for inserting a lock head (105), and the household appliance door lock is characterized in that: the door lock device (200) is provided with a base body (210), a pressure block (230), a locking body (240) provided with a locking body torsion spring (250), an operating plate (290) provided with an operating plate torsion spring (310), a swing rod (300) and a detection switch (320), the locking body (240) is rotatably arranged in the base body (210), the pressure block (230) and the operating plate (290) are connected and movably arranged in the base body (210) and can move along the insertion direction of a lock head (105), when the lock head (105) is inserted into a lock hole (106), the pressure block (230) moves under the abutting action of the lock head (105), the locking body (240) rotates under the action of the pressure block (230), the swing rod (300) is rotatably arranged in the base body (210), the swing rod (300) is arranged between the operating plate (290) and the detection switch (320), and the swing rod (300) rotates under the driving of the operating plate (290) to trigger the detection switch (320), after the lock head (105) is pulled out of the lock hole (106), the operating plate torsion spring (310) has an acting force on the operating plate (290) opposite to the inserting direction of the lock head (105), and under the action of the operating plate torsion spring (310), the pressing block (230) abuts against the lock hole (106) to be matched with and block the lock hole (106).

2. A household appliance door lock according to claim 1, characterized in that: lock body (240) are gone up and have spring bolt (241) and crank (242), have between spring bolt (241) and crank (242) and be approximately the bayonet socket of U font, crank (242) set up under lockhole (106), during tapered end (105) male lockhole (106), crank (242) and briquetting (230) counterbalance lean on the cooperation, lock body (240) rotate under the effect of briquetting (230), and crank (242) have with tapered end (105) insert the opposite effort of direction to briquetting (230), have in tapered end (105) and lock tongue (241) matched with locking groove, lock body (240) rotate under the effect of crank (242), and locking bolt (241) card is gone into locking groove.

3. A household appliance door lock according to claim 2, characterized in that: one side that briquetting (230) are close to crank (242) has step (232), step (232) and crank (242) are supported and are leaned on cooperation drive locking body (240) to rotate, the top of briquetting (230) is equipped with shrouding (233) that are used for shutoff lockhole (106), the up end of shrouding (233) is the outward appearance face, the below of shrouding (233) is equipped with draw-in groove (231), install sealing strip (270) on draw-in groove (231).

4. A household appliance door lock according to claim 1, characterized in that: the swing rod (300) is rotatably arranged on one side of the detection switch (320), a protruding portion is arranged on one side, close to the operating plate (290), of the swing rod (300), a pushing block matched with the protruding portion in an abutting mode is arranged on one side of the operating plate (290), and under the action of the pushing block, the swing rod (300) rotates towards one side, close to the detection switch (320), to trigger the detection switch (320).

5. A household appliance door lock according to claim 1, characterized in that: the pressing block (230) is connected with the operating plate (290) through a sliding rod, a guide cavity for the sliding rod to move along the insertion direction of the lock head (105) is formed in the base body (210), an O-shaped ring (280) is installed in the guide cavity, and the O-shaped ring (280) is tightly matched with the sliding rod.

6. A household appliance door lock according to claim 1, characterized in that: still be equipped with locking body casing (330) in base member (210), rotatable the installing in locking body casing (330) of locking body (240), lockhole (106) have on locking body casing (330), still install locking body upper cover (340) on locking body casing (330), still install casing (220) on base member (210).