KR20030065272A - Cover locking device of washing machine - Google Patents

Abstract

A lid lock of a washing machine, which is a simple electrical structure without using complicated mechanisms, and can be locked securely so that the reliability can be improved and the manufacturing cost can be reduced. Freely swing the outer tank inside, and freely rotate the washing and dewatering tank with the rotary blades in the bottom of the outer tank, and cover it with an upper cover having a clothes inlet to the washing and dewatering tank at the top of the outer box. In the washing machine provided with a lid to open and close the clothes inlet, and the lid lock device to lock the lid unopened during dehydration operation, the lid lock device for the slider and the slider formed with the front end of the lid and fixed to the permanent magnet Electrons placed at right angles and moving the sliders to their locked and unlocked positions And it was composed of a yoke of the electromagnet.

By configuring in this way, the effect of being able to lock a lid using the attraction force of a magnet, without making a complicated mechanical structure is acquired.

Description

COVER LOCKING DEVICE OF WASHING MACHINE}

The present invention relates to a lid lock of a washing machine.

For example, as shown in FIG. 8, the fully automatic washing machine of one tank type freely swings the outer tank in the outer box 1 and washes and dehydrates the rotary vane 2 at the bottom of the outer tank. The tank 3 is provided freely to rotate, the periphery of the upper opening of the outer box 1 is covered with the upper cover 4, and the opening of the upper portion of the washing and dehydrating tank 3 is opened and closed freely with the lid 5. Doing. In the figure, reference numeral 6 denotes a water supply valve, and 7 denotes an operation panel provided at a front portion of the upper cover 4 and provided with setting buttons for setting operation details and the like.

Since the lid 5 is used integrally with the washing machine and the clothes dryer, and the clothes dryer is often installed at the top of the washing machine, the lid 5 is required to lower the height, and the back lid 5a and It is divided into two parts before and after the front lid 5b, and has a structure in which the center is folded by the hinge portion of the central portion. A handle 25 for opening and closing operation is attached to the rear portion of the front lid 5b.

In the washing machine having such a structure, the entire process of water supply, washing, rinsing, and dehydration proceeds automatically, but in the dehydrating stroke, the washing and dewatering tank 3 rotates at a high speed in order to blow the water of the laundry by centrifugal force. For this reason, it is necessary to close the lid 5 and prevent the lid 5 from easily opening during the dehydration operation.

As a structure therefor, as shown in FIG. 9, the lid switch 21 and the lid lock 24 which detect the opening / closing of the lid 5, for example to the operation panel 7 side of the front lid 5b. The lid closing signal from the lid switch 21 is outputted to the operation control unit by a known microcomputer, and it is confirmed that the lid 5 is closed. Then, dehydration operation is started, and during the dehydration operation, the lid locking device 24 The lid 5 is prevented from opening.

The lid locking device 24 has a mechanical structure, for example, by a combination of the locking ring 24a and the locking recess 24b, and is formed on the locking recess 24b integrally formed on the lid 5 side. The hook ring 24a formed on the operation panel 7 side is hooked and fixed.

The lid locking device 24 of such a mechanical structure has a complicated structure in order to prevent the lid from being securely opened. And the complexity of the structure also affects reliability.

An object of the present invention is to solve the irrationality of the conventional example, and to use a simple washing machine without the complicated mechanism and to secure the lid securely to improve the reliability and at the same time reduce the manufacturing cost To provide a lid lock.

1 is a plan view showing an embodiment of a lid locking device of the washing machine of the present invention,

Figure 2 is a longitudinal front view of the release state showing an embodiment of the lid lock of the washing machine of the present invention,

Figure 3 is a longitudinal front view of a locked state showing an embodiment of the lid locking device of the washing machine of the present invention,

4 is an energizing circuit diagram of an electronic coil of the lid locking device of the present invention;

5 is a waveform diagram of current flowing through the electronic coil of the lid lock of the present invention;

6 is a plan view of the washing machine provided with a lid locking device of the present invention,

7 is a front view cut out a part of the washing machine provided with a lid lock of the present invention,

8 is a perspective view of a washing machine,

9 is a plan view of a washing machine provided with a lid lid according to the related art.

[Description of the code]

One… Outer box, 2... Rotary vanes, 3... Washing and dewatering bath, 4... Top cover, 5... Lid, 5a... Back cover, 5b... Front lid, 6.. Feed valve, 7.. Control panel, 8.. Lid lock, 9.. Electronic coil, 10... York, 11... Iron core, 12... Attachment screw, 13.. Permanent magnet, 13a... . Projection, 14... Slider, 14a... Lid catch, 15.. Guide hole, 16... Commercial power, 17... . Control unit, 18... Bidirectional thyristor, 19... Hang hole, 20... Rotation detection unit, 21... Lid switch, 24.. Lid lock, 25.. Handle, 24a ... Hanging ring, 24b... Hanging recess

In order to achieve the above object, the present invention firstly freely supports an outer tank in an outer box to swing freely, and freely provides a washing-and-dehydrating tank having a rotary blade in the bottom of the outer tank to rotate freely, and an upper portion of the outer box. In the washing machine which is covered with an upper cover having a clothes opening to the washing and dewatering tank, and provided with a lid to open and close the clothes opening, and a lid locking device for locking the lid unopened during dewatering operation, the lid locking device covers the tip of the lid. The slider is formed by an electromagnet by forming a slider formed on the engaging portion and fixed to the permanent magnet, an electromagnet disposed at a right angle to the slider and moving the slider to the engaging position and the releasing position, and the yoke of the electromagnet. The magnetic circuit moves to the locked position and released position, and moves to the locked position and released position. After a permanent magnet it is so is adsorbed to the yoke of an electromagnet held in that position, to lock the lid by the suction force of the magnet without the complex mechanical structure.

Secondly, the slider is moved by forward and reverse energization to the electromagnet, and after interrupting the energization to the electromagnet, the permanent magnet fixed to the slider is adsorbed to the yoke of the electromagnet and fixed at the latching or releasing position of the lid. Is securely moved in the direction of the locking position or the releasing position, and after moving to the locking position or the releasing position, it is attracted to the yoke of the electromagnet in the non-excited state of the electromagnet and fixed at that position. Therefore, the lid is securely locked during the dehydration operation, and when the washing and dehydration tank stops rotating after the dehydration operation is completed, the lid is unlocked and the lid can be opened and closed freely.

During the dehydration operation, the slider can be held in the locked position by the suction force of the yoke even if the outlet of the washing machine is disconnected or a power failure occurs and the power supply is cut off or the control function of the control device is lost. It can keep the lock state and secure the safety.

[Examples of the Invention]

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a plan view showing an embodiment of the lid lock of the washing machine of the present invention, Figure 2 is a longitudinal front view showing an embodiment of the lid lock of the washing machine of the present invention, the washing machine is provided with a lid lock of the present invention The overall configuration of is the same as in the conventional example shown in Fig. 8, so the detailed description thereof will be omitted.

In the washing machine provided with a lid locking device of the present invention, as shown in the plan view of Figure 6 lid switch for detecting the opening and closing of the lid 5 on the side in contact with the operation panel 7 in the front position of the front lid (5b) ( 21), and as shown in the top view of FIG. 6 and the longitudinal front view of FIG. 7, the lid locking device 8 is attached to the lower surface of the upper cover 4 at the rear side of the front cover 5b. Fixed by.

As shown in Figs. 1 to 3, the lid locking device 8 is composed of a combination of an electromagnetic coil fixed to the yoke and a permanent magnet fixed to the slider. The iron core 11 is fixed in the longitudinal direction by the attachment screw 12 at the center of the bottom portion, and the electromagnetic coil 9 is wound around the iron core 11.

Located at both sides of the yoke 10 above the upper surface of the electromagnetic coil 9, the guide hole 15 of the slider 14 of the nonmagnetic material described later is provided, and the lower surface of the guide hole 15 Both end sides of the slider 14 having the permanent magnet 13 fixed to the center were inserted freely to move, and the end portion of the slider 14 located on the front lid 5b side was used as the lid catching portion 14a.

In this case, the slider 14 has a cross section having a “co” shape, and the recess formed on the lower surface is an insertion portion of the permanent magnet 13, but the permanent magnet 13 is inserted and mounted on the recess. The lower part protrudes slightly below the slider 14, and is formed in the protrusion part 13a.

In this state, the permanent magnets 13 are horizontally arranged with a gap above the vertically disposed electromagnetic coils 9, and both are disposed at right angles. In addition, the permanent magnet 13 is attached to the slider 14 so that the N poles or the S poles at both ends of the permanent magnets 13 move to the position opposite to the upper portion of the electromagnetic coil 9.

On the other hand, on the side wall of the front lid (5b) was provided a locking hole (19) into which the lid locking portion (14a) formed at the end of the slider (14) is inserted.

4 is a diagram showing an energizing circuit of the electromagnetic coil 9, in which the control device 17 and the electromagnetic coil 9 to which the lid switch 21 and the rotary detection unit 20 of the washing and dehydrating tank 3 are connected. Is connected in parallel to the commercial power supply 16, and the bidirectional thyristor 18 is serially connected to the electromagnetic coil 9.

Next, the operation of the lid locking device of the present invention will be described for the dehydration operation. When the washing stroke proceeds to the dehydration stroke, and the lid 5 is closed and the output from the lid switch 21 is input to the controller 17, the lid lock device 8 is output by the output from the controller 17. Is energized by the electromagnetic coil 9 of FIG. At this time, the controller 17 sends a trigger signal to the gate circuit of the bidirectional thyristor 18 so as to energize only the positive side of the alternating current waveform in Fig. 5A, and the bidirectional thyristor 18 The same waveform as B) is supplied to the electromagnetic coil 9.

When the electric current of such a waveform is supplied to the electromagnetic coil 9, as shown in FIG. 2, the iron core 11 which faces the N pole of the permanent magnet 13 magnetizes to the N pole, and the permanent magnet 13 is carried out. Since the yoke 10 on the S-pole side is magnetized to the S-pole on the contrary, the magnetic pole surface is in the repulsive state, and the slider 14 starts to move in the direction of the arrow on the left side in FIG.

Then, if the center of the permanent magnet 13 is moved to the upper side of the iron core 11, this time is in the suction state on the contrary, the slider 14 is further moved in the direction of the left arrow, the tip as shown in FIG. The lid locking portion 14a is inserted into the locking hole 19 formed in the front lid 5b, and the lid 5 is hooked and fixed by the slider 14.

After that, since the timer of the control device 17 operates and the gate signal is cut off, the bidirectional thyristor 18 is turned off and the energization to the electromagnetic coil 9 is cut off, so that the permanent magnet 13 fixed to the slider 14 is held. It is attracted to the yoke 10 on the side of the lid 5 and fixed to this locking position.

At the same time, the dehydration mechanism is energized to start the dehydration operation, and the washing and dewatering tank 3 and the rotary blade 2 rotate at high speed. During this dehydration operation, the permanent magnet 13 is adsorbed to the yoke 10 on the lid 5 side even if the outlet is disconnected, a power failure occurs, or the control capability of the control unit 17 is lost. Since it is possible to open and close the lid 5, it is possible to ensure safety during dehydration operation. In this case, since the protrusion 13a of the permanent magnet 13 abuts on the yoke 10 and functions as a stopper to prevent further movement, the permanent magnet 13 is held at this suction position.

As described above, when the dehydration stroke progresses and reaches a predetermined time, the output of the control device 17 stops the operation of the dehydration mechanism and ends the dehydration operation. At this time, even if the power supply to the dehydration mechanism is blocked, the washing and dewatering tank 3 containing a lot of laundry continues to rotate by inertia. Therefore, this rotation is detected by the rotation detection part 20, and the lid holding | maintenance state shown in FIG. 3 is hold | maintained until it confirms that washing | cleaning and dehydration tank 3 stopped rotation.

After that, when the rotation stop of the washing-and-dehydrating tank 3 is confirmed, reversal of the waveform as shown in FIG. 5C opposite to when the electromagnetic coil 9 is capped from the controller 17 is performed. Energize Ryu. As a result, a repulsive magnetic field is generated between the permanent magnet 13 and the electromagnetic coil 9 fixed to the slider 14, and the slider 14 moves in the right arrow direction in FIG. 14a comes out of the locking hole 19, and the locking of the lid 5 is released. Thus, opening and closing operation of the lid 5 by the handle 25 is possible.

In this manner, the state of FIG. 2 is again obtained. In this state, even if the energization of the electromagnetic coil 9 is stopped, the protrusion 13a on the right side of the permanent magnet 13 in FIG. 2 is adsorbed to the yoke 10. The slider 14 does not move even if there is an impact from the outside while maintaining this state.

As described above, the lid locking device of the washing machine according to the present invention firstly freely supports the outer tub in the outer box and freely rotates the washing / dehydrating tank having the rotary vane at the bottom in the outer tub. In the washing machine provided with a lid to cover the top of the outer box having a clothes inlet to the washing and dewatering tank, the lid to open and close the clothes inlet, and a lid lock to lock the lid unopened during dewatering operation, the lid lock The apparatus comprises a slider having a tip formed on a capping portion and having a permanent magnet fixed thereto, an electromagnet arranged at a right angle to the slider and moving the slider to a locking position and a releasing position, and the slider having the yoke of the electromagnet. The magnetic circuit formed by the electromagnet moves to the locked position and the released position, After moving to the value and the location is because the permanent magnet is absorbed to the yoke of an electromagnet held in that position, to lock the lid by the suction force of the magnet without the complex mechanical structure.

Secondly, the slider is moved by forward and reverse energization to the electromagnet, and after interrupting the energization to the electromagnet, the permanent magnet fixed to the slider is adsorbed to the yoke of the electromagnet and fixed at the latching or releasing position of the lid. Is securely moved in the direction of the locking position or the releasing position, and after moving to the locking position or the releasing position, it is attracted to the yoke of the electromagnet in the non-excited state of the electromagnet and fixed at that position. Therefore, the lid is securely locked during the dehydration operation, and when the washing and the dehydration tank stops rotating after the dehydration operation is completed, the lid is unlocked and the lid can be opened and closed freely.

Also, during the dehydration operation, the slider can be held in the locked position by the suction force of the yoke even if the outlet of the washing machine is disconnected or a power failure occurs and the power supply is cut off or the control function of the control device is lost. The lid can be kept locked to ensure safety.

Claims (2)

A top cover freely swings and supports the outer tank in the outer box, and freely rotates the washing and dewatering tank with a rotary blade in the bottom of the outer box, and an upper cover having a clothes inlet to the washing and dewatering tank at the top of the outer box. In the washing machine provided with a lid lock to cover the lid, and to open and close the clothing opening, and to lock the lid unopened during dehydration operation, The lid locking device comprises a slider having a tip end formed on the lid locking portion, fixed to a permanent magnet, disposed at a right angle with respect to the slider, an electromagnet for moving the slider to a locking position and a releasing position, and a yoke of the electromagnet. Lid lock on the washing machine. The method of claim 1, The slider is moved by forward and reverse energization to the electromagnet, and after interrupting the energization to the electromagnet, the permanent magnet fixed to the slider is absorbed by the yoke of the electromagnet and fixed to the locking or releasing position of the lid. Lid lock.