KR19990068574A - Door locking divice for a washing machine - Google Patents

Abstract

The present invention relates to a door lock device for a washing machine, the operation structure is simplified because the contacts (51a, 53a) is selectively ON / OFF while the locker (3) is selectively locked / unlocked by the linear movement of the slider (7) In addition, the ground plate 53 is always elastically supported by the spring 6 so that the switch function is satisfactorily maintained, thereby greatly improving the reliability of the operation, and the small size due to the simplification of the operation structure and the structure of the components. It is easy to manufacture and the product cost is reduced.

Description

Door locking device for washing machine {Door locking divice for a washing machine}

The present invention relates to a door lock device for a washing machine, and more particularly, to a simple operation structure, to improve the reliability of operation, convenient assembly work, and a door lock device for a washing machine easy to manufacture small.

As is well known, when the door of the washing machine is opened during washing, the user may be injured. Especially, when the door is installed at the front of the washing machine, water or laundry flows out, and according to the operating state of the washing machine, It is desirable to allow the door to be selectively opened.

Therefore, recently, a door locking device which is operated and controlled according to an electric control signal is mainly used, and FIGS. 4 and 5 show an example of such a conventional door locking device.

4 and 5, the conventional door locking device includes a coil assembly 120 which is operated and controlled according to an electrical control signal; A slider 170 which is elastically supported by the coil spring 123 of the coil assembly 120 and selectively moved by the plunger 124 or the rocker 130 of the coil assembly 120; A rocker 130 which is rotatably supported by a torsion spring 140 and fixed when the striker installed in the door is inserted; A plurality of terminals 151, 152, 153 for power supply and contact sensing; A case 110 in which these components are seated; It consists of a cover (not shown) covering the opening of the case 110.

The terminals 151, 152 and 153 are connected to the terminal 153 and the coil assembly 120 having a terminal 152 directly connected only to the coil assembly 120 and a leaf spring 153a provided with a contact 153b. Consists of a terminal 151 that is selectively connected to the terminal 153 with a spring (153a), 152 is a terminal for power supply, 153 is a terminal for contact detection, 151 is for power supply and contact detection It is a public terminal.

An inclined portion 172 and a locking jaw 173a, 173b, and 173c are formed at the front end of the slider 170 (right direction in FIGS. 4 and 5; Is formed to protrude, and the locking jaw 174 is formed at the tip of the left side of the slider 170 (upward direction in FIGS. 4 and 5; below), and the right side (downside in FIGS. 4 and 5) facing the slider 170. Direction; the same below)) The leaf spring seating portion 176 and the spring seating portion 175 is formed at the front end portion.

The slider 170 is elastically fixed in the forward direction to the case 110 via the coil spring 123 of the coil assembly 2, so that the slider 170 can be selectively moved by a direct external force, The link fixing part 116 of the case 110 is provided with a pusher 182, a link support 181, and a link 180 having a connection part 183 to be rotatable in one direction.

The coil assembly 120 is provided with a plunger 24 which is elastically supported by the coil spring 123, and the rocker 130 is elastically fixed to the case 110 via the torsion spring 140. do.

Guide rockers 130a and 130b are formed in the rocker 130. When the rocker 130 is forcibly lifted up, some of the locking projections 173a and 173b of the slider 170 are guide grooves 130a and 130b. 130b) is moved to prevent the malfunction occurs. In addition, the pusher 130c is formed in the rocker 130 so that the slider 170 is lifted up by force and the slider 170 is supported by the locking jaws 173a, 173b, and 173c of the slider 170. When the rocker 130 is moved in the rear direction and is rotated downward by the restoring force of the torsion spring 140 while the locker 130 is separated from the latching jaws 173a, 173b, and 173c of the slider 170, the push unit 130c is When the inclined support 173d of the slider 170 is pushed to the right, the front tip of the slider 170 is moved to the right, while the rocker 130 is lowered by the torsion spring 140, The inclined support portion 173d of the slider 170 is in close contact with the push portion 130c to maintain the inclined state of the slider 170.

On the other hand, the case 110, the striker insertion hole 113 is inserted into the striker of the door, the coil assembly seating portion 111, the rocker shaft (131a, 131b) to which the coil assembly 120 is fitted is seated and fixed Rocker shaft seating portion (112a, 112b, 112c), the link fixing portion 116, the rocker 130 is forcibly lifted by hinged rotatably hinged in one direction, slider 170 is coil spring Stoppers 117a and 117b are formed to allow the slider 170 to stop at an appropriate position when moved forward by 123, and a plurality of ribs into which terminals 151, 152 and 153 are inserted and fixed are formed.

In addition, the case 110 and the rocker 130 have locking jaws 114 and 132, respectively, so that both front ends 141 and 142 of the torsion spring 140 inserted into the rocker shafts 131b and 131c are supported, respectively. In addition, spring fixing parts 115 and 175 are formed at the right end portions of the case 110 and the slider 170 to fix the coil spring 160. The coil spring 160 pushes the right front end of the slider 170 in the forward direction so that the slider 170 is elastically supported in the left direction.

Referring to the operation state of the conventional door lock device, first, as shown in Figure 4, the rocker 130 is lowered downward by the torsion spring 140, by applying an external force to the striker (not shown) of the door When the rocker 130 is forcibly lifted upward by pushing into the striker insertion hole 113, the slider 170 is moved forward by the coil spring 123 of the coil assembly 120, and the front of the slider 170 is moved forward. Since the front end portion is moved to the left side by the reinforced coil spring 160, when the external force applied to the door is removed, as shown in FIG. 5, the slider 170 is disposed at the engaging jaws 173a, 173b, and 173c of the slider 170. The front end of the rocker 130 is supported to maintain the rocker 130 in a lifted state. That is, the rocker 130 is biting the striker of the door. In this case, the contact 153b of the leaf spring 153a and the contact 151a of the terminal 151 contact each other due to the elasticity of the leaf spring 153a.

In addition, in the state as shown in FIG. 5, when the slider 170 is forcibly moved backward by applying an external force, the rocker 130 is separated from the locking jaws 173a, 173b, and 173c, so that the slider 170 is moved. Removing the external force applied to the rocker 130 by the torsion spring 4 is lowered to the state shown in FIG. Here, as a method of applying an external force to the slider 170, first, power is applied to the coil assembly 120 so that the pusher portion 124a of the plunger 124 pushes the slider 170 toward the rearward direction. Forcibly pulling the connecting portion 183 of the link 180, the pusher 182 of the link 180 is to push the slider 170 in the rear direction. In this case, since the leaf spring 153a is flipped to the right by the slider 170, the contact 153b of the leaf spring 153a is spaced apart from the contact 151a of the terminal 151 by a predetermined interval.

Therefore, the control means (not shown) of the washing machine detects a short circuit of the contacts 151a and 153b to recognize whether the door is in an open state or a closed state, so that the door cannot be opened or opened depending on whether the washing machine is operated. And, it is possible to control such that the washing machine is operated or not operated depending on whether the door is locked.

However, the door locking device according to the prior art is in accordance with German Patent No. 35 27 670 A1, the rocker 130 is supported by the movement of the slider 170, the leaf spring by the rotation of the slider 170 Since the contact 153b of 153a and the contact 151a of the terminal 151 are short-circuited, the operation structure becomes considerably complicated, which lowers the reliability of the operation and constrains the miniaturization of the product due to the need for an operating space. There are disadvantages.

In addition, the door lock device according to the prior art is a structure of each component is quite complicated and their arrangement is three-dimensional, so the assembly work is very difficult, and the mechanical between each component in order to improve the reliability of operation Tolerances have to be reduced, resulting in higher product costs.

On the other hand, the door lock device according to the prior art, since the slider 170 is moved to the front, rear, left and right, there is a problem that the link 180 that can be rotated around the hinge axis to move the slider 170 must be provided separately.

The present invention has been invented to solve the above problems, the operation structure is simplified, the reliability of the operation is improved, the assembly work is convenient, and the object of providing a door lock device for a washing machine that can be compactly manufactured. have.

1 is an exploded perspective view of a door locking device according to the present invention;

Figure 2 is a plan view for explaining the operating state of the door lock device according to the present invention, a state in which the door lock device is released,

3 is a plan view for explaining the operating state of the door locking device according to the present invention, the door locking device is locked state,

Figure 4 is a plan view for explaining the operating state of the door locking device according to the prior art, corresponding to Figure 2,

FIG. 5 is a plan view illustrating an operating state of a door locking device according to the related art, and is a correspondence diagram of FIG. 3.

One ; Case, 11; Coil assembly seat,

12a, 12b, 12c; Rocker shaft seat, 13; Striker insertion hole,

14; Locking jaw, 15a, 15b; Guide,

16; Locking jaw, 17; Pusher Insert Groove,

18a, 18b; Fixed protrusions, 19a and 19b; Terminal Insert Groove,

2 ; Coil assemblies, 21,22; Power supply terminal,

23; Coil spring, 24; plunger,

24a; Pusher portion, 24b; Body Part,

24c; Hanging jaw, 3; Locker,

31a, 31b, 31c; Rocker shaft, 32; Torsion Spring Seating,

4 ; Torsion springs, 41,42; Tiptoe,

5; Terminal for contact sensing, 51; Terminal 1,

51a; Contact, 52; Terminal 2,

53; Contact plate, 53a; Contact,

6; Leaf spring, 7; Slider,

71; Body 71a; Hanging,

72; Pusher, 73; Guide,

73a; Guide hole 74; Supporting,

75; Jamming, 8; cover,

81,82; Through hole, 83, 84; Terminal insertion hole for power supply.

The present invention for achieving the above object, the coil assembly which is operationally controlled in accordance with the electrical control signal; A slider which is elastically supported by the coil spring of the coil assembly and selectively moved by the plunger or rocker of the coil assembly; A rocker that is rotatably supported by a torsion spring and fixed when the striker installed in the door is inserted; Power supply terminal and contact sensing terminal; A case in which these components are seated; A door lock device for a washing machine comprising a cover covering an opening of a case, the terminal for detecting a contact comprising: a first terminal provided with a contact at an inner end thereof; A second terminal spaced apart from the first terminal by a predetermined interval; One end is provided with a contact point, and the contact plate is inserted and fixed to the inner end of the second terminal so as to be rotatable at a predetermined angle, and elastically supported by a spring, while the slider is provided with a pusher, The locker is selectively locked / released by linear movement, and the contact point is selectively turned on / off.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of a door locking device according to the present invention, according to the present invention, the door locking device, the coil assembly (2) which is operated and controlled in accordance with an electrical control signal; A slider 7 which is elastically supported by the coil spring 23 of the coil assembly 2 and selectively moved by the plunger 24 or the rocker 3 of the coil assembly 2; A rocker (3) rotatably supported by a torsion spring (4) to fix it when the striker installed in the door is inserted; Power supply terminals 21 and 22 and contact sensing terminals 5; A case 1 in which these components are seated; It consists of a cover 8 covering the opening of the case 1.

The contact detecting terminal 5 includes: a first terminal 51 provided with a contact 51a at an inner end portion thereof; A second terminal 52 spaced apart from the first terminal 51 by a predetermined interval; One end portion is provided with a contact 53a, which is inserted into and fixed to the inner end portion of the second terminal 52 so as to be rotatable at a predetermined angle, and comprises a contact plate 53 which is elastically supported by the spring 6. . The power supply terminals 21 and 22 are configured in pairs and installed in the coil assembly 2.

A guide portion 73 provided with a guide hole 73a (see FIGS. 4 and 5) at the front end of the quadrangular cylindrical slider body 71 (the right direction in FIGS. 1 and 4 and 5; ) Is formed, and a supporting protrusion 74 is formed on the front surface of the guide portion 73, while a protruding pusher portion 72 is formed on the rear surface of the slider body 71. In addition, a locking protrusion 75 protruding out of the cover 8 is formed on the upper portion of the guide portion 73 of the slider 7 so that the slider 7 can be selectively moved by an external force.

The coil assembly 2 is provided with a plunger 24 which is elastically supported by the coil spring 23, and the rocker 3 is elastically fixed to the case 1 via the torsion spring 4. do.

Meanwhile, the case 1 includes a striker insertion hole 13 into which a striker (not shown) of a door is inserted, a coil assembly mounting portion 11 into which the coil assembly 2 is fitted, rocker shafts 31a and 31b, Rocker shaft seating portions 12a, 12b, 12c on which 31c) is seated and fixed, pusher portion insertion grooves 17c, to which the pusher portion 72 of the coil assembly 2 is movable, and a terminal for contact sensing 5 Terminal insertion grooves 19a and 19b into which the first terminal 51 and the second terminal 52 are inserted, a plurality of guide protrusions 15a and 15b, and a spring 6 and the first and second terminals 51, respectively. Fixing protrusions 75 to which 52 are fixed are formed, respectively.

In addition, the case 1 and the rocker 3 are respectively provided with locking projections 14 and 32, and both tip portions 41 and 42 of the torsion spring 40 inserted into the rocker shafts 31b and 31c are respectively supported. do.

In the cover 8, a through hole 81 is formed to check the locked / unlocked state of the rocker 81, and the through hole 82 is fitted to expose the locking projection 75 of the slider 7 to the outside. Is formed, through-holes 83 and 84 into which the power supply terminals 21 and 22 are exposed to the outside, and the protrusions 85 into which the exposed power supply terminals 21 and 22 are disposed. 86 is formed.

On the other hand, reference numeral 24a is a pusher portion 24a of the plunger 24, 24b is a body 24 of the plunger 24, 24c is a protrusion to which one end of the coil spring 23 is fixed, the ground plate ( A leaf spring was used as the spring 6 for elastically supporting 53).

Figure 2 is a plan view for explaining the operating state of the door lock device according to the present invention, the door lock is a state diagram released, Figure 3 is a plan view for explaining the operating state of the door lock device according to the present invention, the door The locking device is a locked state diagram. With reference to this, the lockers 3 are selectively locked / released by linear movement of the slider 7, and the contacts 51a and 53a are selectively turned on / off. It will be described in detail the operating state of the door locking device according to the present invention.

First, as shown in FIG. 2, while the rocker 3 is lowered downward by the torsion spring 4, by applying an external force, the striker (not shown) of the door is pushed into the striker insertion hole 13 (see FIG. 1). When the locker 3 is forcibly lifted upward, the slider 7 is moved forward by the coil spring 23 of the coil assembly 2, so that the external force applied to the door is removed, as shown in FIG. Likewise, the slider 7 is supported by the support protrusion 74 of the slider 7 to maintain the state in which the rocker 3 is lifted. That is, the rocker 3 bites the striker of the door. In this case, the ground plate 53 is rotated about the connection with the second terminal 52 by the restoring force of the leaf spring 6 so that the contact 53a of the ground plate 53 is connected to the first terminal 51. It is in close contact with the contact 51a at a predetermined pressure.

In addition, in the state as shown in FIG. 3, when the slider 7 is forcibly moved backward by applying an external force, the rocker 3 and the slider 7 are spaced apart from each other, so that the restoring force of the torsion spring 4 is reduced. By the rocker 130 is pressed downward, and after removing the external force applied to the slider 7, the support protrusion 74 of the slider 7 to the side of the rocker 3 is in close contact with a predetermined pressure in Figure 2 It is shown. Here, as a method of applying an external force to the slider 170, first, power is applied to the coil assembly 2 so that the pusher portion 24a of the plunger 24 pushes the slider 7 backward. For example, there is a method of forcibly pulling the engaging protrusion 75 of the slider 7 to directly move the slider 7 in the rearward direction. In this case, since the pusher portion 72 of the slider 7 pushes the end surface of the ground spring 53 toward the leaf spring 6, the contact 53a of the ground plate 53 is connected to the first terminal ( It is spaced apart from the contact 51a of 51 by a predetermined interval.

Therefore, the control means (not shown) of the washing machine detects a short circuit of the contacts 51a and 53a to recognize whether the door is in an open state or a closed state, so that the door cannot be opened or opened depending on whether the washing machine is operated. And, it is possible to control such that the washing machine is operated or not operated depending on whether the door is locked.

1 to 3, the pusher portion 72 is formed on the rear surface of the slider 7, and the spring 6 has the other front end portion of the ground plate 53 in the forward direction. The pusher portion 72 of the slider 7 which is installed to push and pushes the front end portion of the spring plate 6 of the ground plate 53 in the state in which the rocker 3 is released is moved backward. ) Is spaced apart from the contact 51a of the first terminal 51 by a predetermined interval, and the ground plate 53 is connected to the second terminal by the restoring force of the spring 6 when the locker 3 is locked. Although the contact portion 53a of the ground plate 53 is rotated about the contact portion 52 with the contact portion 51a of the first terminal 51 at a predetermined pressure, the position of the pusher portion 72 In addition, the position of the operation sensing terminal 5 and the position of the spring 6 which is operated in connection with this may be variously modified.

1 to 3, the linear movement direction of the slider 7 and the rotation direction of the rocker 3 are arranged to form an angle of about 90 °, and the front end of the slider 7 is arranged. The support protrusion 74 is formed in the supporter, and in the state in which the rocker 3 is released, the support protrusion 74 of the slider 7 is applied to the side surface of the rocker 3 lowered by the restoring force of the spring 4 at a predetermined pressure. When the rocker 3 is supported by the support protrusion 74 of the slider 7 moved forward in the state in which the rocker 3 is locked and the lifter 3 is locked, the lifter 3 and the slider ( The structure of 7) is greatly simplified.

Meanwhile, according to the present embodiment, the power supply terminals 21 and 22 are configured in pairs and installed in the coil assembly 2, but may be variously modified in connection with the operation sensing terminal 5. For example, only one of the pair of power supply terminals 21 and 22 may be selected to be spaced apart by a predetermined interval in the same manner as the first and second terminals 51 and 52, and the selected power supply terminal ( 21 or 22 is connected to the + terminal of the coil assembly 2, and the second terminal 52 is connected to the-terminal of the coil assembly 2, the second terminal 52 for power supply and operation detection It can also be shared.

In addition, since the slider 7 of the door locking device according to the present invention repeats only linear movement, the locking protrusion 75 is integral to the slider 7 without the need to install a separate link 180 mentioned in the related art. By molding the mold, it is possible to reduce the number of members.

According to the present invention as described above, since the contactor is selectively turned on / off while the rocker is selectively locked / released by linear movement of the slider, the operation structure is simplified, and the ground plate is always elastically supported by the spring. Since the switch function is satisfactorily maintained, the reliability of the operation is greatly improved, and the compact manufacturing becomes easy.

In addition, according to the present invention, the structure of each component is considerably simplified, the arrangement of them is made sequentially, the assembly work is simple and easy, there is an advantage that the product cost is reduced.

On the other hand, if the locking projection for direct operation control is integrally formed on the slider of the door locking device according to the present invention, there is an advantage that the number of members is reduced.

The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the following claims.

Claims (5)

A coil assembly 2 which is operated and controlled in accordance with an electrical control signal; A slider 7 which is elastically supported by the coil spring 23 of the coil assembly 2 and selectively moved by the plunger 24 or the rocker 3 of the coil assembly 2; A rocker (3) rotatably supported by a torsion spring (4) to fix it when the striker installed in the door is inserted; Power supply terminals 21 and 22 and contact sensing terminals 5; A case 1 in which these components are seated; In the door lock device for a washing machine comprising a cover (8) covering the opening of the case (1), The contact detecting terminal 5 includes: a first terminal 51 provided with a contact 51a at an inner end portion thereof; A second terminal 52 spaced apart from the first terminal 51 by a predetermined interval; The contact 53a is provided at one of the front end portions, and the contact plate 53 is inserted and fixed to the inner front end of the second terminal 52 so as to be rotatable at a predetermined angle and is elastically supported by the spring 6. On the other hand, the slider 7 is provided with a pusher portion 72, the locker (3) is selectively locked / unlocked by the linear movement of the slider 7, while the contacts (51a, 53a) is selectively ON / OFF Door lock device for a washing machine characterized in that it is. The rocker according to claim 1, wherein the pusher portion (72) is formed on the rear surface of the slider (7), and the spring (6) is installed to push the other tip of the ground plate (53) in the forward direction. In the state in which (3) is released, the pusher portion 72 of the slider 7 moved in the rearward direction pushes the tip end side of the spring 6 of the ground plate 53 so that the contact 53a of the ground plate 53 is closed. The ground plate 53 is connected to the second terminal 52 by a restoring force of the spring 6 in a state where the locker 3 is locked by a predetermined distance from the contact 51a of the first terminal 51. Is rotated about the center of the contact plate (53a) of the ground plate 53, the door lock device for a washing machine, characterized in that the contact with a predetermined pressure to the contact (51a) of the first terminal (51). 2. The slider according to claim 1, wherein the linear movement direction of the slider 7 and the rotational direction of the rocker 3 are arranged to form an angle of about 90 degrees, and a support protrusion 74 is formed at the front end of the slider 7. In the state in which the rocker 3 is released, the support protrusion 74 of the slider 7 comes into close contact with a predetermined pressure on the side of the rocker 3 lowered by the restoring force of the spring 4, and the rocker 3 is locked. In the state, the door lock device for a washing machine, characterized in that the rocker (3) is supported by the support protrusion (74) of the slider (7) moved forward to maintain the lifted state. The door lock device for a washing machine according to claim 1, wherein the power supply terminals (21, 22) are configured in pairs and installed in the coil assembly (2). The door lock device for a washing machine according to any one of claims 1 to 3, wherein the slider (7) is provided with a locking protrusion (75) protruding out of the cover (8).