KR101108432B1 - Door-lock with a broken locker sensor - Google Patents

Abstract

The present invention relates to a door lock device for use in home appliances, the case 10 having a through hole 11 formed on one side; An operating plate 20 rotatably installed in the case 10 and elastically supported so that one end thereof protrudes through the through hole 11; A locker 30 which is slid by the rotation of the operating plate 20; A stopper (40) positioned behind the locker (30) to limit the movement of the locker (30); A drive device for moving the stopper 40; It is a technical feature that the damage detection means 60 for detecting whether the locker 30 is damaged in the door lock is provided.

As a result, when the user is forcibly opening the door while the door is locked, the locker is broken, the damage detecting means in the door lock device detects this and can quickly and easily know that the door lock device is broken.

Door lock, washing machine, automatic washing machine, breakage detection

Description

DOOR-LOCK WITH A BROKEN LOCKER SENSOR}

The present invention relates to a door lock device for use in home appliances, and more particularly, when the user is forced to open the locked door to the door lock device is broken, the user can easily recognize and replace the locker to detect the damage of the locker It relates to a door lock device having a function.

In general, fully automatic home appliances are provided with a door lock device that locks the user from arbitrarily opening the door during operation.

The door lock device is mainly applied to a washing machine, and since the washing machine is opened while the washing machine door is opened, there is a safety risk because the inner washing tank is exposed so that the door is automatically locked so that the door is not opened during washing.

The door lock device is equipped with an opening and closing pin for opening and closing the door cover by the solenoid inside the case, the opening and closing pin is projected to the outside of the case by the operation of the solenoid to fix the door.

At this time, when a user applies a force to open the locked door forcibly, a large shear force is generated at the protruding end of the opening / closing pin, and the tip of the opening / closing pin is broken by such shearing force, thereby easily losing its function as a door lock device. .

However, since the user cannot easily recognize the broken state of the door lock, the replacement of the door lock device is not only delayed, but also the user may easily open the door during the operation of the washing machine, thereby causing a safety accident.

The present invention is to improve the problems of the prior art as described above, the present invention can cope in advance with the safety accident caused by the door is arbitrarily opened by the user to replace the door lock device if the door lock device is broken easily and quickly. It is to provide a door lock device.

The present invention according to the above object and the case is formed with a through hole on one side; An operating plate rotatably installed in the case and elastically supported such that one end protrudes through the through hole; A locker sliding by the rotation of the operating plate; A stopper positioned behind the locker to limit the movement of the locker; A drive device for moving the stopper; This is achieved by providing breakage detecting means for detecting whether the locker is broken in the door lock.

At this time, the damage detection means is provided with a sliding bar or a rotating plate that is elastically supported by a spring member so that one end is in close contact with one surface of the locker and is provided with a micro switch which is grounded at the other end of the sliding bar or the rotating plate, or the locker It may be implemented to have a magnet in the end of the, and having a sensor for detecting the presence or absence of the magnet.

The present invention is a door lock that automatically locks the door so that the door does not open arbitrarily when the home appliance is used, when the user forcibly opens the door and the locker is broken, the damage detecting means grasps the broken door lock device to operate insignificantly. At the same time, by sending an abnormal signal to the control unit, the user can immediately recognize the breakage of the door lock.

Hereinafter will be described in more detail with reference to the accompanying drawings showing an embodiment of the present invention.

The present invention is an automatic door lock device used in home appliances, when the user forcibly opens the door in the locked state, the locker of the door lock device can be broken, the door lock that can be immediately recognized to the user that the locker is broken in this way To provide a device.

To this end, the door lock is provided with a damage detecting means, wherein the door lock includes a case 10 having a through hole 11 formed at one side thereof as shown in FIGS. 1 to 3; An operating plate 20 rotatably installed in the case 10 and elastically supported so that one end thereof protrudes through the through hole 11; A locker 30 which is slid by the rotation of the operating plate 20; A stopper (40) positioned behind the locker (30) to limit the movement of the locker (30); And a driving device for moving the stopper 40.

The door lock 1 is installed at the main body side of the home appliance, and has a plate-shaped case 10 having an appropriate size as shown in FIGS. 1 to 3, and a cover covering an upper surface of the case 10. It consists of a) and consists of a housing having a storage space therein.

One side of the case 10 is formed with a through hole 11 partially opened to allow the operation plate 20 and the locker 30 to be described later, and the case 10 having the through hole 11 formed thereon. The hanger main body 2 provided in the door side is slidably moved to the side outside.

In addition, a plurality of protrusions are formed on the inner surface of the case 10. These protrusions are used for fixing, supporting, or guiding a plurality of constituent units installed in the case 10. Various changes may be made in order to implement the same, and detailed description thereof will be omitted.

The operation plate 20 is configured to fix or release the locker 30 by the movement of the hook body 2, and is installed in the case 10 and protrudes through one end of the through hole 11. 21 is formed, the other side is formed with an inclined portion 22 in contact with the locker 30, the case 10 is formed with a guide plate 23 for limiting the rotation range of the operating plate 20 is protruded .

At this time, the operation plate 20 is fixed to the spring member (S ₁ ) is installed at one end and the end of the locker 30 is always inserted into the case 10, the operation plate (2) by the hook body (2) The protrusion 21 of the 20 is rotated while being pressed to space the inclined portions 22 to fix the locker 30 to release the locker 30.

The locker 30 is configured to fix the hook mechanism main body 2 provided on the door side, and is implemented in the form of a bar having a length, and has a groove 31 formed on the bottom thereof, The inclined surface 32 is formed on the side surface to be in contact with the inclined portion 22 of the operation plate 20.

In addition, a locking groove 33 is formed at the rear end of the locker 30, which is a part that hangs and stops the stopper 40 so that the horizontally moved locker 30 is not pushed back.

Such a locker 30 is fixed to the inside of the case 10 by the operation plate 20, when the inclined portion 22 is moved while the operation plate 20 is rotated, the elasticity of the spring member (S ₁ ) As a result, the inclined surface 32 of the locker 30 moves horizontally while keeping the state in close contact with the inclined portion 22, whereby the end of the locker 30 passes through the through hole 11 of the case 11. The hanger main body 2 is fixed through the hanger main body 2 of the outer side.

Therefore, the hook hole main body 2 is formed with a hook hole 2 'having a size enough to penetrate the end of the locker 30.

The stopper 40 and the drive device lock the locker 30 by moving the locker 30 horizontally, and then move the stopper 40 to the rear of the locker 30 so that this state cannot be released. The stopper 40 is inserted into the locking groove 33 of the locker, and the locker 30 is prevented from moving backward by the stopper 40 so as to be supported by the locker 30 that has penetrated the hanger main body 2. Configuration.

The driving device may use a solenoid 50 that repeatedly performs an operation of reciprocating the rod 51 by an electrical signal, and at this time, the rod 51 is randomly moved to prevent the rod from being released. 51 may be implemented by further mounting a tension holding member using a leaf spring.

In addition, as another example of the driving device, a motor (not shown) that is generally widely used may be used, and by installing a cam for converting the rotational motion of the motor into a linear reciprocating motion, the stopper 40 moves the rear of the locker 30. Can be fixed and released.

The operation of the operation plate 20, the locker 30, the stopper 40 will be described in more detail through the following examples.

<Example of operation>

Door lock 1 of the present invention, as shown in Figure 4, when the hook mechanism 2 installed on the door side is inserted along the outside of the case 10 of the door lock 1, the protrusion 21 of the operation plate 20 When the hanger is rotated at an appropriate angle in accordance with the downward movement of the main body 2, the operation plate 20 is rotated to move the inclined portion 22, the locker 30 in accordance with the movement of this inclined portion 22 The inclined portion 22 and the inclined surface 32 are horizontally moved as shown in FIG. 5 while keeping the inclined portion 22 and the inclined surface 32 in contact with each other by the elasticity of the spring member S ₁ .

Thus, when the locker 30 moves horizontally and the end part penetrates the through-hole 11 of the case 10, the hanger main body 2 will penetrate together through the hanger main body 2 located in the outer side. It is fixed.

At this time, the locker 30 penetrates through the hanger main body 2, but since the user does not lock the door and simply closes the door, the user should be able to open the door freely at any time. 2) Pulling the locker 30 inserted should be configured to release the fixing while naturally pushing backwards.

Therefore, in the present invention, when the hanger main body 2 rises, the locker 30 inserted therein naturally comes out, and for this purpose, a curved round is formed at the end of the locker 30 and the hook hole 2 '.

In addition, the protrusion of the operating plate 20 pressed by the hook mechanism main body 2 is rotated by the elasticity of the spring member S ₁ , and the inclined portion 22 is inclined surface 32 by the rotation of the operating plate 20. Push to help return the locker 30.

On the other hand, the damage detection means 60 is a configuration in which when the locker 30 is broken, by sending an abnormal signal to the control unit to recognize the breakage of the door lock 1 to the user, generally the locker 30 is forcibly opened The end of the locker 30 protruding out of the through hole 11 of the case 10 is often damaged by being pulled by the door main body 2 by the door. When the locker 30 is broken by the open door, the damage can be easily and accurately determined through the changed length of the locker 30.

Hereinafter will be described through an embodiment of the damage detection means 60.

<First Embodiment>

As an example of the damage detection means 60, as shown in Figure 6, one end of the locker 30 is elastically supported by the spring member (S ₂ ) so that one end is in close contact with the rotating plate 61 and the rotary plate ( It is implemented with the micro switch 70 actuated by the rotation of 61.

The rotating plate 61 is always kept in close contact with one side of the locker 30 which is horizontally moved by the spring member (S ₂ ), if the end of the locker 30 is broken, the part in close contact with the rotating plate 61 is lost. For this reason, the rotating plate 61 is rotated by the elasticity of the spring member S ₂ , thereby causing damage to the locker 30 by a short circuit of the contact portion 71 of the microswitch 70 that is in contact with the rotating plate 61. It is possible to know whether the breakage.

Second Embodiment

As another example of the failure detecting means 60, as shown in Fig. 7 (a), the sliding bar 62 is elastically supported by the spring member so that one end is in close contact with one side of the locker 30; It may be implemented as a micro switch 70 that is grounded to the other end of the sliding bar (62).

This is the same as the first embodiment is installed so that the sliding bar 62 is in close contact with the one side of the locker 30 by the spring, the locker 30 is broken and the sliding bar 62 is moved by the spring When the close contact with the contact portion 71 of the micro switch 70 provided on the opposite side is released while detecting the abnormality of the door lock.

Third Embodiment

As another example of the failure detection means 60 and the magnet (M) provided in the end of the locker 30, as shown in Figure 7 (b); It may be implemented as a detection sensor 63 for detecting the presence or absence of the magnet (M).

The sensor 63 is configured to detect the presence or absence of the magnet (M) provided at the end of the locker 30 to determine whether the locker 30 is damaged, and is configured to send an abnormal signal to the controller in case of abnormality.

In an embodiment of the present invention, the spring member S ₁ is an elastic spring, and the spring member S ₂ is a coil spring.

The present invention, such that when the end of the locker 30 of the door lock (1) installed in the main body of the home appliance is broken by a door that is forcibly opened, the user can quickly recognize and replace it, a relatively simple configuration There is a technical feature that can accurately determine whether the damage of the locker 30 using the damage detection means (60).

1 is a perspective view showing an example of a door lock device having a damage detection function of the locker according to the present invention,

Figure 2 is an isolated perspective view showing an example of the door lock device with a damage detection function of the locker according to the present invention,

3 is a plan view showing an example of the door lock device having a damage detection function of the locker according to the present invention;

4 and 5 is a state of use of the door lock device having a damage detection function of the locker according to the present invention,

6 is a use state showing an example of the operation of the failure detection means according to the present invention,

7 (a, b) is a partial cross-sectional view showing another example of the failure detection means according to the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

1: door lock 2: hook body

2 ': hanger hole 10: case

11: through-hole 20: operating plate

21: protrusion 22: inclined portion

23: guide plate 30: locker

31: groove 32: inclined surface

33: engaging groove 40: stopper

50: solenoid 60: damage detection means

61: rotating plate 62: sliding bar

63: sensor 70: micro switch

71: contact point M: magnet

S ₁ , S ₂ : spring member

Claims (6)

In the door lock device for restraining the hook mechanism main body 2 installed in the door of the home appliance, A case 10 formed with a housing having a storage space therein and having a through-hole 11 formed at one side of the hanger main body 2; An operating plate 20 which is elastically rotatably installed in the case 10 and whose one end protrudes into the through hole 11 and is pressed and rotated by the hanger main body 2; A locker (30) fixed at one end to the through hole (11) by the rotation of the operation plate (20) to fix the hook mechanism main body (2); A stopper 40 installed at the rear of the locker 30 to limit sliding of the locker 30; Driving means for elevating the stopper 40; It includes a damage detecting means 60 for detecting whether the end of the locker 30 is damaged by contact with the locker 30, The breakage detecting means (60) includes a rotating plate (61) elastically supported by a spring member (S ₂ ) so that one end is in close contact with one surface of the locker (30); Including a micro switch 70 is grounded to the other side of the rotating plate 61, the spring member (S ₂ ) is released to restrain the support for one side of the rotating plate 61 when the end of the locker 30 is broken The rotating plate 61 is rotated by the elasticity of the rotating plate, and the pressing of the micro switch 70 grounded on the other side of the rotating plate 61 is released by the rotation of the rotating plate 61 so as to send an abnormal signal to the controller. Door lock device having a damage detection function of the locker, characterized in that configured. delete delete delete delete The method according to claim 1, The drive means is a solenoid (50) door lock device having a failure detection function of the locker, characterized in that.

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