KR100362852B1 - Door lock device in a drum-type washing machine - Google Patents

Abstract

The present invention is to simplify the structure of the door lock device, to lower the unit cost of the device, to simplify the assembly process and to reduce the defective rate at the same time to improve the reliability.

To this end, the present invention provides a main body having a long shape in the horizontal direction, a slider which is provided to be slidable to the main body, and at the same time a bent groove is formed in a predetermined portion, and to limit the moving range of the slider. Provided is a door lock device for a drum washing machine including a control member inserted into a bending groove and having a protrusion formed on a predetermined portion to move along the bending groove, and a moving means for moving the control member.

Description

Door lock device in a drum washing machine {Door lock device in a drum-type washing machine}

The present invention relates to a drum washing machine, and more particularly to a door lock device for a drum washing machine.

In general, the drum washing method is a method of washing by using the friction force of the rotating inner tub and the laundry by receiving the driving force of the motor while the detergent, the washing water and the laundry are put in the inner tub, and the damage of the laundry is almost No, the laundry is not tangled with each other, knocking and rubbing has the advantage of producing a laundry effect.

Hereinafter, the schematic structure of the conventional drum washing machine and the structure of the prior art apparatus will be described with reference to the accompanying drawings.

1 is a view illustrating a conventional drum washing machine, and an outer tub (not shown) is installed inside the cabinet 10, and an inner tub 20 is provided at a center of the outer tub of the driving motor (not shown). It is installed to be rotated by receiving power.

And the drum washing machine is provided with a door 30 for the laundry input and withdrawal in front of the cabinet (10).

In addition, the conventional drum washing machine, when the door 30 is opened during washing, the detergent, washing water, laundry in the inner tub 20 is discharged to dirty the surroundings, so to prevent this in advance in the cabinet (10) The door lock device 40 is provided.

In addition, one side of the door 30 is provided with a door-shaped latch 31 having a hook shape to correspond to the door lock device 40.

Meanwhile, as illustrated in FIGS. 2A and 3A, the door lock device 40 has a long shape in a horizontal direction (arrow direction in FIG. 2A) and has a socket so that the door bracket 31 is drawn out on one side thereof. 41a is formed and the other side is provided with a main body 41 formed with a full-length chamber (41b) so that the bimetal portion is seated, and the main body 41 is slidable in the horizontal direction and the opening 41a is formed to correspond to the gasket hole ( 42) and a drive 43 detachably provided on the slider and the main body and moved between the drive 43 and the rib 41c formed on one side of the drive and the main body when the door is locked. Compression spring 44 for preventing the flow of the drive, and the sliding bolt 45 is slidably provided on the main body to hold the drive retracted to prevent the door from opening after the door lock. And, the sliding bolt is configured to include a bimetal portion for applying a moving force to be inserted into the sliding sliding gap formed by the drive.

In addition, as shown in FIG. 2A, the bimetal part generates heat when power is applied to the first connector 45 and the second connector 46 to which external power is applied, and the first connector and the second connector. And a bimetal 49 which is expanded by the heat generating member to add a moving force to the sliding bolt 45.

The operation of the conventional door lock device configured as described above is as follows.

First, in order to explain the operation of the door lock device, it will be described in detail by dividing the door lock, the door lock after washing, and the door after washing.

First, when the door is locked, as shown in FIGS. 2A and 3A, the slider slidably provided in the main body 41 is attached to the hook-shaped door bracket 31 provided in the door 30. To push in the direction of the arrow.

That is, when the door closer 31 is inserted into the opening 42a formed in the slider 42, the end of the door closer touches the fragment 42b bent around the opening, and gradually the slider moves in the direction of the arrow. When it is retracted and finally locked completely, the slider 42 is retracted back a predetermined distance and at the same time, the end of the hook shaped door bracket passes through the kit hole 41a of the main body, and is formed around the kit hole as shown in FIG. 2B. It is seated in the groove 41d and hooked.

At this time, as shown in FIG. 2B, the drive 43 mounted on the slider 42 is also retracted backwards, so that a gap A is generated in the battlefield as much as the drive is retracted.

Second, after the door lock, as shown in Figure 2b and 3b, when the power is applied to the first connector 46 and the second connector 47, it is provided between the first connector and the second connector The heat generating member 48 generates heat, and the bimetal 49 expands to move the end of the second connector.

In addition, one end of the bimetal 49 is connected to the sliding bolt 45, so that the sliding bolt moves together.

That is, the sliding bolt 45 is a gap A formed by the drive 43 being retracted, and as shown in FIG. 2C, the sliding bolt 45 is inserted and prevents the front / rear movement of the drive. The slider also does not move accordingly.

Third, at the time of washing, as shown in FIGS. 2C and 3C, the sliding bolt 45 is continuously inserted into the gap A to prevent the door 30 from being opened.

That is, as the second connector 47 moved by the bimetal 49 contacts the third connector 50, the heating member 48 continuously generates heat, and the bimetal continues to receive heat. Thus, the sliding bolt 45 connected to the bimetal stays in the gap A.

Therefore, even if an external force acts on the slider 42 holding the door latch 31, it becomes a state which cannot be moved.

Fourth, when the door is opened after washing is finished, as shown in FIGS. 2C and 3C, when the power applied to the first, second, and third connectors 46, 47, and 50 is cut off, the heating member 48 ) Is rapidly cooled and at the same time the bimetal 49 is in place, the sliding bolt 45 is also in place.

Therefore, the drive 43 can be moved. That is, the drive 43, which prevented the movement of the slider 42 when the door is opened, is separated from the gap A, and the door bracket is pushed against the fragment 42b of the slider so that the slave 42 As the door is pulled out of the main body 41, the door 31 is opened.

However, the conventional door lock device made as described above has the following problems.

As described above, the door lock device, the slider and the drive is moved when locking, and is equipped with a compression spring, which is a separate elastic member to prevent the flow of the drive, and a separate sliding to prevent the flow of the slider when washing after locking As the bolt catches the drive and the slider, the auxiliary parts bound to the slider which are the main parts of the locking device occupy a plurality as described above.

Therefore, the increase in the number of parts is a major factor to increase the unit price of the equipment, which causes cost problems.

In addition, as the number of parts increases, the assembly process is lengthened, and the defect rate is increased, thereby decreasing the reliability of the device.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art, and the object of the present invention is to simplify the structure of the door lock device, reduce the unit cost of the device, simplify the assembly process, and reduce the defective rate and improve reliability. .

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

2a to 2c is a rear view showing the internal structure and the door locking process of the conventional door lock device.

Fig. 2A is a state diagram showing the state at the time of door opening and the direction of movement of the slider at the time of door locking with an arrow.

Figure 2b shows the state at the time of the door locking and the state showing the direction of movement of the sliding bolt at the time of washing after the door locking by the arrow.

Figure 2c is a state diagram showing the state at the time of washing after locking the door and the direction of movement of the sliding bolt after washing with an arrow.

3a to 3c is a front view showing the internal structure and the door locking process of the conventional door lock device.

Fig. 3A is a state diagram showing the state at the time of door opening and the direction of movement of the slider at the time of door locking with an arrow.

Figure 3b shows the state at the time of the door locking and the state showing the direction of movement of the sliding bolt at the time of washing after the door lock with an arrow.

Figure 3c is a state diagram showing the state at the time of washing after locking the door and the direction of movement of the sliding bolt after washing with an arrow.

4 is a perspective view showing a front portion and a side portion of the door lock device according to the present invention.

5 is a perspective view showing a control member and a slider of the door lock device according to the present invention.

6a to 6c is a rear view for showing the internal structure and door locking process of the door lock device of the present invention.

Fig. 6A is a state diagram showing the state at the time of door opening and the direction of movement of the slider at the time of door locking with an arrow.

6B is a state diagram showing the state at the time of door locking and the direction of movement of the control member at the time of washing after door locking with an arrow.

Figure 6c is a state diagram showing the state at the time of washing after the door lock and the direction of movement of the control member after washing with an arrow.

7a to 7c is a front view showing the internal structure and the door locking process of the door lock device of the present invention.

Fig. 7A is a state diagram showing the state at the time of door opening and the direction of movement of the slider at the time of door locking with an arrow.

7B is a state diagram showing the state at the time of door locking and the direction of movement of the control member at the time of washing after the door locking is indicated by the arrow.

Figure 7c is a state diagram showing the state at the time of washing after the door lock and the direction of movement of the control member after washing with an arrow.

Explanation of symbols for main parts of the drawings

30: door 31: door latch

60: main body 61: ketch ball

62: battlefield 63: guide

70: slider 71: bending groove

71a: end toward the opening 71b: bend

71c: opposite end of opening 72: opening

73: intercept 80: control material

81: protrusion

In order to achieve the above object, the present invention provides a main body having a long shape in the horizontal direction, a slider which is provided to be slidable in the main body, and at the same time a bent groove is formed in a predetermined portion, and a moving range of the slider is defined. Provided is a door lock device for a drum washing machine, which is inserted into the bending groove and includes a control member having a protrusion formed on a predetermined portion to move along the bending groove, and a moving means for moving the control member.

Referring to the drawings to describe the above content in more detail as follows.

4 is a perspective view showing a front portion and a side portion of the door lock device according to the present invention, Figure 5 is a perspective view showing a control member and a slider of the door lock device according to the present invention.

As shown in Figs. 4 and 5, the door lock device of the present invention is provided with a main body 60 having an elongated shape in a horizontal direction (arrow direction in Fig. 6A), and slidable to the main body and at a predetermined portion. A slider 70 having a bending groove 71 and a protrusion 81 formed at a predetermined portion to be inserted into the bending groove to move along the bending groove so as to limit the moving range of the slider. It consists of the control material 80 and the moving means which moves the said control material.

Here, the main body 60 is a place where the slider 70, the control member 80 and the moving means are built, and is installed in the door part 40 of the cabinet 10 which is an outer case of the drum washing machine. When the door is locked, a bracket hole 61 is formed at one side to insert a door bracket (see 31 of FIG. 1) formed in the door (see 30 of FIG. 1), and the rear surface of the bracket may be seated so that the end of the door bracket is seated. A hook groove (see 64 in FIG. 6B) is formed at the periphery thereof, a guide 63 is formed at the front portion to guide the movement of the slider 70, and the protrusion 81 of the control member 80 moves to the rear portion. A through hole (not shown) is formed to be inserted and inserted into the bending groove 71 of the slider 70 positioned at the front portion, and an electric field chamber (see 62 in FIG. 6B) is formed at the rear surface to seat the moving means. It is done.

The slider 70 is slidably mounted to the main body 60 to be moved by the door ketches when the door ketches 31 are pulled in and out, and are restricted by the control member 80. The opening 72 is formed at a position corresponding to the catch hole 61 formed in the main body, and both sides in the horizontal direction (arrow direction in FIG. 6A) of the opening are pushed by the door latch inserted into the opening. A bent portion 73 bent to the rear portion is formed, and a bent groove 71 is formed in a predetermined portion located at the side of the electric field chamber 62, and has a predetermined length in the horizontal direction and ends toward the opening 72. The addition is made by the "b" shape which is a shape bent in the moving direction of the control member 80.

In addition, the controller member 80 restricts the movement of the slider 70 differently when the door is locked, when the door is locked after the door lock, and when the door is opened after the end of the washing. The protrusion 81 is formed at the same time, and when the door is locked, the protrusion is seated at the end portion 71a of the bending groove 71 toward the opening, thereby preventing the slider from continuously retreating backward. When washing after locking the door, the protrusion 81 is moved by the moving means to prevent the door 30 from opening, and is seated on the bent portion 71b of the bending groove of the slider. The protrusion is seated on the opposite end 71c of the opening of the bent groove so that the slider is moved only a predetermined distance.

On the other hand, the moving means is to add a moving force for moving the control member 80, it may take a variety of forms because it requires a force enough to move the control member.

For example, the control member 80 can be moved using a solenoid (not shown), the control member can be moved by a cylinder (not shown) using pneumatic pressure, and a motor (not shown) is used. To move the control member.

The moving means used in the present invention includes all of the above, and the embodiment of the specific moving means will be described taking the use of the bimetal 94 as shown in FIG. 6A.

A power supply (not shown) and a first connector 91 and a second connector 92 are mounted in a horizontal direction (see arrow direction) to each other in the electric compartment 62 of the main body so as to receive the power. The bimetal 94 is fixed to the connector 92, and a heating member 95 is generated between the first connector 91 and the bimetal 94 to generate heat by applying power, and the heating member flows. A spring 96 is provided between the first connector and the rib of the main body to prevent it.

When the bimetal 94 is expanded when the power is applied, the third connector 93, which is in contact with the second connector 92, is inserted into the electrical chamber 62 to maintain the expanded state of the bimetal during washing. Is mounted.

Operation of the present invention made as described above is performed as follows.

First, when the door is locked, as shown in FIGS. 6A and 7A, the slider 70 slidably provided in the main body 60 is attached to the hook-shaped door bracket 31 provided in the door 30. To move in the direction of the arrow.

That is, when the door closer 31 is inserted into the opening 72 formed in the slider 70, the end of the door closer touches the fragment 73 formed bent on both sides of the opening, the slider gradually moves to an arrow. Retreat in the direction.

Thereafter, as shown in FIG. 6B, the door 30 is completely locked while the end portion of the door bracket 31 is seated in the hook groove 64 formed in the main body 60. The slider 70 to be moved is stopped by moving a predetermined distance.

The reason for this is that as shown in FIG. 7B, since the protrusion 81 formed in the control member 80 is inserted into the bending groove 71 formed in the slider 70, the slider is moved to the left in the drawing. The bent groove also moves along the protruding portion, because when the end portion 71a of the bent groove toward the opening of the main body reaches the protruding portion, the bent groove stops moving further.

Second, as shown in FIGS. 6B and 7B, when power is applied to the first connector 91 and the second connector 92 after the door locking, the first connector 91 and the bimetallic 94 are applied. The heating member 95 provided therebetween generates heat to expand the bimetal, and the second connector 92 is moved by the displacement generated.

At this time, since one end of the bimetal 94 is inserted into and coupled to the slit 82 formed in the control member 80, the control member also moves together.

That is, as the control member 80 moves, the protrusion 81 formed in the control member also moves along, and the protrusion is inserted into the bent portion 71b of the bent groove formed in the slider 70 to be seated.

As a result, even if an external force enough to open the door 30 is applied to the door, the door is never opened because the slider 70 holding the door bracket 31 cannot move.

Third, during washing, as shown in FIGS. 6C and 7C, the protrusion 81 of the control member should be seated at the bent portion 71b of the bent groove of the slider so that the door 30 is not opened. In order for the protrusion 81 to be seated in the bending groove 71, the displacement of the bimetal 94 must be maintained continuously.

If the displacement of the bimetal 94 is not maintained and returned to its original position, the slider 70 holding the door 30 is moved.

Accordingly, when an external force is applied to the door 30, the door is opened, and the laundry and the wash water in the inner tub (see 20 in FIG. 1) are released to the outside, or the consumer knows that the washing is finished. If you put your hand into the inner tub, a fatal accident may occur.

That is, in order to prevent this, the control member 80 is moved by the displaced displacement as the bimetal 94 heats up after the door locking, wherein the control member 80 is disposed between the bimetal 94 and the second connector 92. As the protrusion 83 protruding from the seat is seated, the protrusion moves the second connector 92 toward the third connector 93 simultaneously with the movement of the control member.

Thereafter, as the second connector 92 comes into contact with the third connector 93, the bimetal 94 continues to be applied with a constant voltage, so that the bimetal continues to maintain the expanded displacement.

Therefore, the protrusion 81 of the control member is continuously seated in the bent portion 71b of the bent groove of the slider to block the movement of the slider 70, so that the door 30 held by the slider also continues. You will be caught.

Fourth, when the door is opened after washing is finished, as shown in FIGS. 6C and 7C, when the power applied to the first, second, and third connectors 91, 92, and 93 is cut off, the bimetal 94 ) Is in the original position, the control member 80 is also in the original position.

Accordingly, the protrusion 81 of the control member, which is seated in the bent portion 71b of the bent groove of the slider, is also disengaged from the bent portion. As shown in FIG. The door is opened as it is released from the door lock device while pushing the section 73 of the slider.

As described above, since the present invention can reduce the number of parts of the conventional door lock device, the production cost can be reduced.

That is, the door lock device according to the present invention can implement the same operation as described above even without the drive and the compression spring used in the prior art.

On the other hand, even if the operation implementation of the door lock device according to the present invention is the same as in the prior art, as the parts are reduced as described above, the probability of malfunction of the device in the inoperable state generated between the parts is significantly reduced.

In addition, as the parts are reduced, the friction generated by the contact between the parts is reduced, and as the structure is simplified, the probability of foreign matter being caught between the parts is reduced.

Therefore, the aging of parts caused by friction and foreign matter is significantly reduced, which can further extend the life of the device.

And as the number of parts is reduced, the assembly process is simplified and mass production is possible, and the defect rate is remarkably reduced.

And all the effects mentioned in the detailed description of the invention.

Claims (4)

The main body which was long in the horizontal direction, A slider which is provided to be slidable in the main body and has a bent groove in a predetermined portion; A control member having a protrusion formed in a predetermined portion to be inserted into the bending groove and movable along the bending groove to limit the moving range of the slider; The door lock device of the drum washing machine, characterized in that it comprises a moving means for moving the control member. The method of claim 1, The main body; When the door is locked, a bracket hole is formed at one side so that the door bracket formed in the door is inserted, A guide is formed in the front portion to guide the movement of the slider, The through hole is formed so that the protrusion of the control member is inserted into the rear portion is inserted into the bending groove of the slider located in the front portion, The door lock device of the drum washing machine, characterized in that the electric compartment is formed in the rear portion so that the movement means and the control member is seated. The method of claim 1, The slider; The opening is formed at a position corresponding to the catch hole formed in the main body, Fragments bent to the rear part are formed on both sides of the horizontal direction of the openings so as to be pushed by the door closer inserted into the openings. The bent groove is formed in a predetermined portion located on the battlefield side, and has a predetermined length in the horizontal direction, and the end portion toward the opening portion has a "b" shape that is bent in the moving direction of the control member. A door lock device for a drum washing machine. The method of claim 1, The control member is; The protrusion is formed at the same time as the main body is slidable, When the door is locked, the protrusion is seated at the end portion of the bent groove facing the opening, thereby preventing the slider from continuously retreating back, When washing after locking the door, the protrusion is moved by the moving means to prevent the door from being opened and seated in the bent portion of the bent groove of the slider. When the door is opened after completion of washing, the door lock device of the drum washing machine, characterized in that the projection is seated on the opposite end of the opening of the bending groove so that the slider is moved only a predetermined distance.