KR100813045B1 - device for locking door in washing machine - Google Patents

Abstract

The present invention improves the lid lock device structure of the washing machine so that the lid can be opened and closed even when the power is turned off, so that children who fall into the washing tank can protect the child from safety accidents caused by failing to open the lid, while also operating reliability. This is to be improved.

To this end, the present invention is a solenoid, a plunger embedded in the solenoid and retracted or advanced depending on whether the solenoid is on or off, an elastic member installed on an outer circumferential surface of the plunger to advance the plunger forward, and the plunger tip A connection bar having one end hinged to the connection bar, a tension spring having one end connected to the other end of the connection bar to receive a tension force when the plunger is retracted, and a connection bar installed in the region between the plunger and the tension spring and installed by the solenoid and the spring. The heart cam is integrally provided so that it can move up and down in conjunction with the forward and backward movements of the plunger, and the lead lock slide acts to maintain the hook lock state by descending when the plunger moves forward by the solenoid operation, and the plunger under the lead lock slide. Are installed to face to the left and right sides along the forward and backward directions of the When the hook head is pushed in, it is pushed away from each other, and when the hook is completed, it approaches and tightens the neck of the bottom of the hook head, and after the completion of the lowering of the lead lock slide according to the operation of the solenoid, the retraction is prevented by the latch action of the lead lock slide. A hook holder (chocker), an elastic member which is provided on the outside of the hook holder and presses the two hook holders toward each other, a slide arm provided on one side of the lead lock slide, and the lead lock slide is lifted up. A return spring that imparts a return force in a direction, a lead lock / unlock detection switch that is turned on by a push action of the slide arm according to the lowering of the lead lock slide to detect a lead lock state, and a hook enters under the hook holder Lead open / close detection installed to be movable in the same direction A pressing piece guide bracket provided to guide the lifting operation of the position pressing piece, the lid opening and closing detection switch pressing piece, and a lead installed to detect whether the lid is opened or closed by contacting on or off according to the lifting and lowering of the pressing piece of the lid opening and closing detection switch. An opening / closing detection switch and a hook rod which enters between the hook holders on both sides as the lid is closed are formed in parallel with the hook rod portion provided at the distal end and the hook rod portion to push the lid opening / closing switch pressing piece. And a hook consisting of a frame rod portion formed across the hook rod portion and the pushing rod portion.

Washing machine, lead, lock, switch assembly

Description

Lead lock device for washing machine {device for locking door in washing machine}

1 is a perspective view showing the appearance of a general washing machine

2 is a plan view showing the structure of the lead lock device of the present invention.

3 is a perspective view of the hook of FIG.

4 is a plan view separately showing only the lead lock slide of FIG.

5 is a longitudinal cross-sectional view taken along the line II of FIG.

6 is a perspective view of the connection bar of FIG.

7 is a perspective view of the lead open and close detection switch pressing piece of FIG.

8 is a perspective view showing the hook holder of FIG.

9 is a perspective view of the plunger assembly of FIG.

10A to 10D illustrate an operation process of the lead lock device of the present invention.

10A is a plan view showing a state when a lead is opened;

10B is a plan view showing a state in which the lid is closed but not locked

FIG. 10C is a plan view showing an intermediate step of lead locking, and a state immediately after the connection bar trajectory in the inner groove of the heart cam passes the ascending surface. FIG.

10D is a plan view showing a state after lead locking                 

11A to 11C are principal plane views for explaining the correlation between the connection bar and the lead lock slide in the operation process of the lead lock device of the present invention through the trajectory of the connection bar in the inner groove of the heart cam,

FIG. 11A is a plan view showing the position of the connection bar operating arm in the heart cam inner groove in the lead unlock state as shown in FIG. 10A or 10B;

FIG. 11B is a plan view showing the position of the connection bar working arm immediately after the connection bar trajectory in the inner groove of the heart cam passes the ascending surface as shown in FIG. 10C.

FIG. 11C is a plan view showing the position of the connection bar working arm in the heart cam inner groove in the lead lock state as shown in FIG. 10D; FIG.

Explanation of symbols for each part of the drawing

1: switch case 2: solenoid

3: Plunger 4: Compression Spring

5: connection bar 500: working arm

6: tension spring 7: lead lock slide

70: heart cam 700: cam home

701: outside guide 702: inside guide

702a: V groove 703: stopper

704: Ascending surface 71: Latch part

8: Hook holder 801: locking jaw

9: Compression spring 10: Slide arm                 

11: Return spring 12: Lead lock / unlock detection switch

13: Lead open / close detection switch push

130: combed side 131: guide rod

132: guide 14: push guide bracket

15: Lead open / close detection switch 16: Hook

160: hook rod portion 160a: hook head

160b: reinforced rib 161: pushing rod portion

162: frame rod portion 17: compression spring

18: Lock manual release strap L: Lead

B: The body

The present invention relates to a washing machine, and more particularly to a lid lock device of a washing machine.

In general, a washing machine is a product that removes various contaminants attached to clothes, bedding, etc. by using the emulsification of the detergent and the friction action of the water flow due to the rotation of the washing blade and the impact of the pulsator on the laundry. After detecting the quantity and type, the washing method is automatically set, and the washing water is supplied to the appropriate level according to the quantity and type of the laundry, and then washing is performed under the control of the microcomputer.                         

1 is a view illustrating a conventional washing machine, a water tank (not shown) is installed inside the body B, and a combined washing / dehydration tank is received from a driving motor (not shown) inside the water tank. It is installed to be rotatable.

And, the washing machine is provided with a lid (L) for laundry input and withdrawal on the upper body (B).

In addition, in order to ensure safety in the rotation of the washing-and-water dewatering tank, the lid (L) is provided with a lid opening and closing detection switch (not shown) for rotationally driving the washing-and-water dewatering tank in a state in which the lid is closed, In addition, the lock device for preventing the lid (L) from opening during rotation of the washing / drying dehydration tank is provided.

However, such a conventional lead lock device has the following problems or disadvantages in terms of structure and operation.

First, the conventional lead lock device has a structure in which the lid is closed while the lid is closed, so that a safety accident may occur when children are trapped in the washing tank due to carelessness or the like.

That is, in the related art, when the lid is closed in a state in which a young child is dropped into the washing tank, there is a problem in that the lid cannot be opened out.

Second, the conventional lead lock device is a structure in which the solenoid is operated to release the lead lock state only when the lock release button is pressed while the power is on, so that the read lock is not released when the power is turned off.

That is, there is a problem in that the lead cannot be opened when the power is turned off due to the power failure lamp.

Third, there is a disadvantage in that there is an excessive time delay in performing the locking and unlocking operations of the lead.

Fourth, the conventional lead lock device has a very complicated operation structure, which results in a deterioration in fabrication and assembly of parts.

The present invention is to solve the above-mentioned problems, by enabling the opening and closing of the lid even when the power off, it is possible to protect the child from the safety accident caused by the child missing in the washing tank can not open the lid and improved operation reliability It is an object of the present invention to provide a lead lock device for a washing machine.

In order to achieve the above object, the present invention provides a solenoid installed on one side of the switch case, a plunger built in the solenoid and retracted or advanced depending on whether the solenoid is on or off, and a plunger outer periphery to advance the plunger forward. An elastic member installed on a surface, a connection bar having one end hinged to the plunger tip, and one end connected to the other end of the connection bar and fixed to the other end on a switch case opposite to the solenoid, and to receive a tension force when the plunger is retracted The heart cam is integrally provided to move up and down in conjunction with the tension spring, which is installed in the area between the plunger and the tension spring and moves forward and backward of the connection bar by the solenoid and the spring, and the plunger advances according to the solenoid operation. Lowers during operation to maintain hook lock Is installed at the lower side of the lead lock slide and the lead lock slide to face each other in the right and left directions along the forward and backward directions of the plunger and is pushed away from each other when the hook head enters, and then approaches the neck portion below the hook head when the hook entry is completed. After the lowering of the lead lock slide according to the operation of the solenoid and the hook holder (chocker) is prevented to retreat by the latch action of the lead lock slide, and the hook holder is installed on the outside of the hook holder respectively to close the hook holder A compression spring pressurized toward the side, a slide arm provided on one side of the lead lock slide, a return spring to impart a return force in a direction in which the lead lock slide is raised, and a slide arm according to the lowering of the lead lock slide Is turned on to detect a read lock condition A lock / unlock detection switch, a lid open / close detection switch pressing piece provided on the switch case so as to be movable under the hook holder in the same direction as the hook entry direction, and a switch to guide the lifting and lowering action of the lid opening / closing detection switch pressing piece; A pressing piece guide bracket provided on the case, a lid opening / closing detection switch installed on the switch case to detect whether the lid is opened or closed as the contact point of the lid opening / closing switch is raised or lowered, and the lid is closed. Accordingly, a hook rod to enter between the hook holders on both sides is formed in parallel with the hook rod portion and the hook rod portion, and the push rod portion and the hook rod portion and the push rod portion to push the lid open / close detection switch pushing piece. Including a hook consisting of a frame rod formed across The lid lock apparatus of the washing machine as characterized in that the property is provided.                     

An embodiment of the present invention configured as described above will be described in detail with reference to the accompanying drawings.

Figure 2 is a plan view showing the structure of the lead lock device of the present invention, Figure 3 is a perspective view of the hook of Figure 2, Figure 4 is a plan view showing only the lead lock slide of Figure 2, Figure 5 is a line I-I of Figure 2 This is a longitudinal cross section along.

And, Figure 6 is a perspective view of the connection bar of Figure 2, Figure 7 is a perspective view of the push opening and closing detection switch pressing piece of Figure 2, Figure 8 is a perspective view of the hook holder of Figure 2, Figure 9 is a plunger assembly of Figure 2 It is a perspective view shown.

The lead lock device of the present invention is composed of a lead lock switch assembly mounted on the washing machine main body B and a hook 16 mounted on the lid L.

The lead lock switch assembly may include a solenoid 2 installed at one side of the switch case 1 and a built-in solenoid 2 to retreat or move forward depending on whether the solenoid is turned on or off. The plunger 3, a compression spring 4, which is an elastic member installed on the outer circumferential surface of the plunger 3, so that a restoring force acts in the direction of advancing the plunger 3 forward, and one end hinged to the tip of the plunger 3 One end is connected to the other connection bar 5 and the other end of the connection bar 5, and the other end is fixed on the switch case 1 opposite the solenoid 2 and receives a tension force when the plunger 3 is retracted. It is installed in the region between the tension spring (6), which is an elastic member, and the plunger (3) and the tension spring (6) and in conjunction with this when the forward and backward operation of the connection bar (5) by the solenoid (2) and the spring To move up and down The lead cam slide 70 is provided integrally and acts to lower the plunger 3 according to the operation of the solenoid 2 to maintain the hook lock state, and to the lower side of the lead lock slide 7. It is installed to face to the left and right sides along the forward and backward direction of the plunger (3) is pushed away from each other when entering the hook head (160a) and approached at the completion of entering the hook (16) to access the neck portion below the hook head (160a) A hook holder 8 which is loosened and is prevented from retreating by the latching action of the lead lock slide 7 after completion of the lowering of the lead lock slide 7 according to the operation of the solenoid 2, and the hook holder (8) a compression spring (9), which is an elastic member which is provided on an outer side and presses the both side hook holders (8) toward the adjacent side, a slide arm (10) provided on one side of the lead lock slide (7), and Lead lock slide 7 is turned on by the pressing action of the return spring 11 which gives a return force in the direction in which 7) rises, and the slide arm 10 according to the fall of the said lead lock slide 7, and detects a lead lock state. A lead lock / unlock detection switch 12, and a lid opening / closing detection switch pressing piece 13 installed on the switch case 1 to be movable under the hook holder 8 in the same direction as the hook entry direction. And the push piece guide bracket 14 provided on the switch case 1 to guide the lifting and lowering action of the lid open / close detection switch pressing piece 13 and the lead open / close detection switch pressing piece 13 according to the lifting and lowering of the lead opening / closing detection switch pressing piece 13. It is composed of a lead open and close detection switch 15 provided on the switch case 1 to detect whether the contact is turned on or off to open or close the lead.

In addition, the hook 16 includes a hook rod 160 and a hook rod 160 having a hook head 160a provided at a distal end of the hook 16 to enter between both hook holders 8 as the lid L is closed. ) And a pushing rod portion 161 which is formed in parallel with the push opening and closing detection switch pressing piece 13 and the frame rod portion 162 formed across the hook rod portion 160 and the pushing rod portion 161. Is made of.

In this case, reinforcing ribs 160b for reinforcing strength of the hook rod unit 160 are formed at both sides of the hook rod unit 160.

On the other hand, the heart cam 70 of the lead lock slide 7 is a portion named as the movement trajectory of the connection bar 5 along the cam groove 700 is shaped similar to the heart (heart); An outer guide 701 and a V-shaped inner guide 702 having a hexagonal structure for guiding the horizontal movement of the connection bar 5 according to the plunger 3 forward and backward to the vertical movement of the lead lock slide 7. ) And a stopper 703 protruding toward the V groove 702a of the inner guide 702 inside the outer guide 701, and the connection bar 5 of the cam groove 700 of the heart cam 70. On the area of the cam groove 700 from the unlock point of the trajectory to the middle point of the lock and the unlock, as shown in FIG. 5, there is a rising surface 704 of which height increases.

In addition, both ends of the lower end of the lead lock slide 7 with respect to the hook holder 8 to prevent the retraction of the hook holder 8 upon completion of the lowering of the lead lock slide 7 according to the operation of the solenoid (2). The latch portion 71 is provided with a latch action.

In addition, the front end of the hook holder 8 is formed in a streamlined structure to facilitate the entry of the hook head (160a).

In addition, portions other than both edges of the bottom surface of the lead lock slide 7 are recessed to minimize the contact area with the switch case 1. That is, both edges of the bottom surface of the lead lock slide 7 have a blade shape.

On the other hand, an upper surface of the lid open / close detection switch pressing piece 13 abuts an inner surface of a switch cover (not shown) matching the switch case 1 so as to be opposite to the hook 16 entry direction with respect to the switch pressing piece. Guide rod portion 131 for guiding the compression spring 17, which is an elastic member for imparting a return force in the direction is formed, and the inclined surface 130 for pressing the contact of the switch at the front end of the switch pressing piece (13) It is provided.

In addition, guide pieces 132 are formed on both side surfaces of the lead opening / closing detection switch pressing piece 13 so as to be guided by the inner groove of the pressing piece guide bracket 14 so that the lifting movement of the pressing piece is exactly linear.

In addition, a lock manual release strap 18 is provided at the rear of the plunger 3 to manually release the lock state of the lid L by pulling back the plunger 3.

The operation of the lead lock device of the present invention configured as described above is as follows.

First, a process of detecting the case of closing the lead in the open state of the lead L and a subsequent locking process of the lead will be described.

In order to close the lid in the open state of the lid L as shown in FIG. 10A, the hook head 160a of the hook 16 mounted on the lid L must enter between the two hook holders 8. 8) is supported by the compression spring (9) of the rear, so that a constant force must be applied to the hook head (8) while the opening of the hook head (160a) is made.

As such, when the hook head 160a enters, the pushing rod part 161 formed side by side with the hook rod part 160 provided with the hook head 160a returns to the lead open / close detection switch pressing piece 13. The lid opening / closing detection switch pressing piece 13 is pushed while the compression spring 17 for compression is compressed.

At this time, the lead opening and closing detection switch pressing piece 13 is accurately linear movement as the guide piece 132 formed on both sides thereof is guided by the inner guide groove of the pressing piece guide bracket 14.

On the other hand, as the hook head 160a enters, the inclined surface 130 of the lead open / close detection switch pressing piece 13 presses the contact point of the lead open / close detection switch 15, and the hook head 160a When the entry is completed, as shown in FIG. 10B, the contact of the lid open / close detection switch 15 is turned on to detect that the lid L is closed.

At this time, when the hook head 160a is opened in the direction away from each other, the hook holder 8 approaches each other by the restoring force of the compression spring 9 as the hook head 160a is completed. The neck is located in the narrow neck.

In the state of FIG. 10B, the lid L is closed but the locking is not yet performed. In this state, the lid L can be opened.

Therefore, in this state, even if the child falls into the washing tank and the lid is closed, the child falling into the washing tank can push the lid L up and open.                     

On the other hand, when the lid (L) is simply closed in this way, but the locking is not made, if you want to lock the lid (L) by pressing the locking button (not shown) to apply a voltage to the solenoid (2) Will be authorized.

That is, when a voltage is applied to the solenoid 2, the solenoid 2 sucks the plunger 3, and thus the connection bar 5 connected to the plunger 3 is pulled to the left in the drawing to form the heart cam 70. It moves along the cam groove 700 of (). (Path along the arrow "A" in FIG. 11)

At this time, the lead lock slide 7 is moved downward by the action of the connection bar 5 and the heart cam 70, and at the same time the slide arm (10) provided on one side of the lead lock slide (7) ) Will also move downward.

In this way, when the lead lock slide 7 is completed to move downward, the latch portion 71 provided on both sides of the lower end of the lead lock slide (7) as shown in Figure 10d is the locking jaw of the hook holder (8) 801 located at the rear to block the retraction of each hook holder 8 to prevent the hook 16 from exiting the hook holder 8, and at the same time the slide provided on one side of the lead lock slide (7) The arm 10 turns on the read lock / unlock detection switch 12 to detect that the lid L is in the locked state.

On the other hand, the voltage applied to the solenoid (2) is the operating arm 500 of the connection bar 5 is the lead (L) unlock position on the cam groove 700 of the heart cam 70 ("ga" position of Figure 11) ) Is only on until it moves to the past position ("or" position in FIG. 11), and then off, after which the lead lock slide 7 is lowered to the locked position.

That is, when the connection bar 5 reaches the position ("I" position in FIG. 11) past the rising surface 704 on the cam groove 700 of the heart cam 70, the power applied to the solenoid 2 is turned off. Due to the restoring force of the compression spring 4 on the outer circumferential surface of the plunger 3 and the tension spring 6 connected to the connection bar 5 and the restoring interval, the connection bar 5 causes the inner guide 702 of the heart cam 70 to rest. By the action of pushing the lead lock slide 7 continues to be lowered, so that the action arm 500 of the connection bar 5 when the read lock is completed, as shown in Figure 11 the cam groove of the heart cam 70 It will be located at the "many" position on the 700.

On the other hand, in the cam groove 700 of the heart cam 70, as shown in Figure 5, the position past the rising surface 704 in the lead (L) unlock position ("low" position of Figure 11) (" A rising surface 704 is provided on a path moving to the " n " position. Therefore, once the working arm 500 of the connection bar 5 passes through the rising surface 704, the rising surface 704 is provided. The position of the action arm 500 of the connection bar 5 in the position "b" of FIG. 11, which is lower than that of FIG. 11, prevents the backing of the connection bar 5.

For reference, FIG. 10C is a plan view showing the door lock device when the action arm 500 of the connection bar 5 reaches the " me " state in FIG. 11, in which the locking of the lid L is performed. A portion of the latch of the lead lock slide 7 is located at the rear of the latching jaw 801 of the hook holder 8 in the ongoing state.

Hereinafter, the process in which the locking of the lid L is released as the solenoid 2 operates while the lid L is locked will be described.                     

In order to unlock the lid in the locked state of the lid L as shown in FIG. 10D, when the voltage is first applied to the solenoid 2, the solenoid 2 sucks the plunger 3, and thus the plunger 3 is removed. The connection bar 5 connected to) is pulled to the left in the drawing to move along the cam groove 700 of the heart cam 70.

In this case, the actuating arm 500 of the connection bar 5 is located at the "many" position of the top surface of the stopper 703 of the cam groove 700 of the heart cam 70, and is at the "ga" position which is the unlock position. Since the movement path of the action arm 500 of the connection bar 5 follows the arrow "B" of FIG.

At this time, the lead lock slide 7 is moved upward in the drawing by the action of the return spring 11 to impart a restoring force to the lead lock slide (7), at the same time provided on one side of the lead lock slide (7) The slide arm 10 is also moved upward.

On the other hand, as the lead lock slide 7 returns to the unlocked state (the state where the action arm 500 of the connection bar 5 is located at the "ga" position of FIG. 11), the hook holder 8 The restraint state of the latch portion 71 is completely eliminated, so that the hook 16 having the neck portion can be pulled out from both hook holders 8, thereby opening the lid L. FIG.

Accordingly, when the user opens the lid L in this state, the hook head 160a of the hook 16 is pulled out of both hook holders 8, and the pushing rod part 161 presses the lid open / close detection switch. It is separated from the piece 13.                     

Accordingly, the lead open / close detection switch pressing piece 13 is pushed by the restoring force of the return compression spring 17 to move toward the rear side of the drawing plane, so as to be separated from the contact of the lead open / close detection switch 15. do.

In short, according to the operation of the solenoid 2, the lead lock depends on the forward and backward movement of the plunger 3 and the position of the action arm 500 of the connection bar 5 in the cam groove 700 of the heart cam 70 at this time. The slide 7 is raised or lowered to make the lid L locked, or to release the locked state of the lid L.

Hereinafter, a process of manually releasing the lid L locking state will be described.

When the power is turned off to the washing machine due to a power failure or a failure in the state in which the lid L is locked, an access cover (not shown) provided on one side of the washing machine main body B is opened, and the access The lock 18 of the lid L is released by pulling the strap 18 installed inside the cover to manually operate the lid lock device.

That is, as the user pulls the strap 18 in the locked state of the lid L as shown in FIG. 10D, a pulling force is applied directly to the plunger 3, and accordingly, a return spring below the lead lock slide 7 is applied. By the action of 11 and the heart cam 70, the lead lock slide 7 immediately rises.

When the lead lock slide 7 is raised, the restraint of the latch portion 71 of the lead lock slide 7 with respect to the hook holder 8 is released so that both hook holders 8 can move in a direction away from each other. Therefore, opening of the lid L is also possible.                     

On the other hand, the present invention is not limited to the above-described embodiment, it is a matter of course that the shape change or the material can be changed in various forms without departing from the scope of the technical idea of the present invention.

The present invention has the following advantages over the conventional lead lock device described above by the configuration and operation as described above.

First, the conventional lead lock device is a structure in which the lead lock state is released by operating the solenoid only when the lock release button is pressed while the power is turned on, and thus the lead lock device cannot be released when the power is turned off. According to the present invention, it is possible to release the read lock state even in the power off state, thereby opening the lead, thereby eliminating the inconvenience of the user due to the power off in the read lock state.

Next, the lead lock device of the present invention has almost no time delay in performing the locking and unlocking operation of the lead, and has a simple shape, which improves the manufacturability and assembly of the parts and secures operation reliability. .

In particular, the lead lock device of the present invention has a structure in which the locking operation is performed by applying power to the solenoid according to the pressing of the locking button after the lid is closed, so that even if the children fall into the washing tank due to carelessness or the like, the lead can be opened out. It will be able to faithfully protect the child from safety accidents.

Claims (19)

With solenoids, A plunger embedded in the solenoid to retreat or move forward depending on whether the solenoid is on or off; An elastic member installed on an outer circumferential surface of the plunger to advance the plunger forward; A connection bar hinged to one end of the plunger tip, A tension spring having one end connected to the other end of the connection bar to impart a return force to the connection bar when the plunger is retracted; It is installed in the area between the plunger and the tension spring, the heart cam is integrally provided to move up and down in connection with the forward and backward movement of the connection bar by the solenoid and the spring, and the hook descends when the plunger moves forward according to the solenoid operation A lead lock slide which acts to maintain the locked state, It is installed on the lower side of the lead lock slide to face the left and right sides along the forward and backward direction of the plunger and is pushed away from each other when entering the hook head, and approaching when the hook is completed, the neck of the hook head is lowered and the solenoid is operated. Hook holder (chocker) to prevent the retreat by the latching action of the lead lock slide after completion of the descending of the lead lock slide according to, An elastic member installed at an outer side of the hook holder to press the two hook holders toward each other; A slide arm provided at one side of the lead lock slide; A return spring for imparting a return force in a direction in which the lead lock slide is raised; A lead lock / unlock detection switch which is turned on by the pressing action of the slide arm according to the lowering of the lead lock slide to detect the lead lock state; A lid opening / closing detection switch pressing piece installed below the hook holder to be movable in the same direction as the hook entry direction; A pressing piece guide bracket provided to guide the lifting operation of the lid opening and closing switch pressing piece; A lead open / close detection switch installed to detect whether the lead is opened or closed by contacting on or off according to the lift of the lead open / close detection switch pressing piece; The hook rod which enters between the hook holders on both sides as the lid is closed is formed in parallel with the hook rod portion and the hook rod portion, and the push rod portion and the hook rod portion push the lid opening and closing switch pressing piece. And a hook made of a frame rod portion formed across the pushing rod portion. The method of claim 1, The heart cam of the lead lock slide, An outer guide and a V-shaped inner guide for guiding the horizontal movement of the connection bar according to the plunger forward and backward to the vertical motion of the lead lock slide, and the V guide of the inner guide inside the outer guide. Consists of a protruding stopper The lead lock device of the washing machine, characterized in that the cam groove area from the unlock point of the connection bar trajectory of the cam cam of the heart cam to the intermediate point between the lock and the unlock is such that the rising surface of the height cam increases. The method of claim 1, Lead lock device of the washing machine, characterized in that the reinforcing ribs are formed on both sides of the hook rod portion for reinforcing the strength of the hook rod portion. The method according to claim 1 or 2, Both sides of the lower end of the lead lock slide, the lid lock device of the washing machine, characterized in that the latch unit is provided with a latching action to the hook holder to prevent the retraction of the hook holder when the lowering of the lead lock slide according to the operation of the solenoid. The method of claim 4, wherein Opposite end of the hook holder is a lead lock device of the washing machine, characterized in that formed in a streamlined structure to facilitate the entry of the hook head. The method of claim 4, wherein A portion of the bottom surface of the lid lock slide except for both edges is recessed to minimize contact area with the sliding surface, so that both edges of the bottom surface of the lid lock slide have a blade shape. The method of claim 1, On one side of the lid opening / closing detection switch pressing piece, a guide rod portion for guiding an elastic member for providing a return force in a direction opposite to the hook entry direction with respect to the lid opening / closing detecting switch pressing piece is formed, and at the tip of the switch pressing piece. Lead lock device of the washing machine, characterized in that the inclined surface for pressing the contact of the switch when rising. The method according to claim 1 or 7, Leading device of the washing machine, characterized in that the guide piece to be guided by the inner groove of the pressing piece guide bracket on both sides of the lid opening and closing switch pressing piece so that the lifting movement of the pressing piece is exactly linear movement. The method of claim 1, And a lock manual release strap is installed at the rear of the plunger to manually release the lead lock by pulling back the plunger. With switch case, A solenoid installed on one side of the switch case, A plunger embedded in the solenoid to be retracted or advanced depending on whether the solenoid is on or off, an elastic member installed on an outer circumferential surface of the plunger to advance the plunger forward, a connection bar having one end hinged to the plunger tip,  A tension spring having one end connected to the other end of the connection bar and fixed to the other end on the switch case opposite to the solenoid, and receiving a tension force when the plunger is retracted; It is installed in the area between the plunger and the tension spring, the heart cam is integrally provided to move up and down in conjunction with the solenoid and the connection bar by the spring forward and backward movement in conjunction with it, and the hook lock is lowered when the plunger moves forward according to the solenoid operation A lead lock slide that acts to maintain state, It is installed on the lower side of the lead lock slide to face the left and right sides along the forward and backward direction of the plunger and is pushed away from each other when entering the hook head, and approaching when the hook is completed, the neck of the hook head is lowered and the solenoid is operated. Hook holder (chocker) to prevent the retreat by the latching action of the lead lock slide after completion of the descending of the lead lock slide according to, An elastic member installed at an outer side of the hook holder to press the two hook holders toward each other; A slide arm provided at one side of the lead lock slide; A return spring for imparting a return force in a direction in which the lead lock slide is raised; A lead lock / unlock detection switch which is turned on by the pressing action of the slide arm according to the lowering of the lead lock slide to detect the lead lock state; A lid opening and closing switch pressing piece installed on the switch case below the hook holder to be movable in the same direction as the hook entry direction; A pressing piece guide bracket provided on the switch case to guide the lifting and lowering action of the lid opening and closing switch pressing piece; A lead open / close detection switch installed on the switch case to detect whether a lead is opened or closed by contact of the lead open / close detection switch being pushed up and down; A hook rod part which enters between the hook holders and the hook rod part which enters between the hook holders on both sides as the lid is closed is formed across the push rod part and the hook rod part and the pushing rod part that push the lead opening / closing detection switch pushing piece. Lead lock device of a washing machine comprising a hook consisting of a frame rod. The method of claim 10, The heart cam of the lead lock slide, An outer guide and a V-shaped inner guide for guiding the horizontal movement of the connection bar according to the plunger forward and backward to the vertical motion of the lead lock slide, and the V guide of the inner guide inside the outer guide. Consists of a protruding stopper The lead lock device of the washing machine, characterized in that the cam groove area from the unlock point of the connection bar trajectory of the cam cam of the heart cam to the intermediate point between the lock and the unlock is such that the rising surface of the height cam increases. The method of claim 10, Lead lock device of the washing machine, characterized in that the reinforcing ribs are formed on both sides of the hook rod portion for reinforcing the strength of the hook rod portion. The method of claim 10 or 11, Both sides of the lower end of the lead lock slide, the lid lock device of the washing machine, characterized in that the latch unit is provided with a latching action to the hook holder to prevent the retraction of the hook holder when the lowering of the lead lock slide according to the operation of the solenoid. The method of claim 13, Opposite end of the hook holder is a lead lock device of the washing machine, characterized in that formed in a streamlined structure to facilitate the entry of the hook head. The method of claim 13, A portion of the bottom surface of the lid lock slide except for both edges is recessed to minimize contact area with the switch case, so that both edges of the bottom surface of the lid lock slide have a blade shape. The method of claim 10, On one side of the lid opening and closing switch pressing piece, a guide rod portion for contacting the inner surface of the switch cover to the switch case to guide the elastic member to give a return force in the opposite direction to the hook entry direction with respect to the switch pressing piece The lead lock device of the washing machine, characterized in that the front end of the switch pressing piece is provided with a comb surface for pressing the contact of the switch when ascending. The method according to claim 10 or 16, Leading device of the washing machine, characterized in that the guide piece to be guided by the inner groove of the pressing piece guide bracket on both sides of the lid opening and closing switch pressing piece so that the lifting movement of the pressing piece is exactly linear movement. The method of claim 10, And a lock manual release strap is installed at the rear of the plunger to manually release the lead lock by pulling back the plunger. The method according to any one of claims 1, 7, 10, and 16, Lead elastic device of the washing machine, characterized in that the elastic member is a compression spring.

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