CN1239771C

CN1239771C - Lid locking device of washer

Info

Publication number: CN1239771C
Application number: CNB021406693A
Authority: CN
Inventors: 广冈博; 猪濑邦夫
Original assignee: Nihon Kentetsu Co Ltd; Mitsubishi Electric Corp
Current assignee: Nihon Kentetsu Co Ltd; Mitsubishi Electric Corp
Priority date: 2002-01-31
Filing date: 2002-07-12
Publication date: 2006-02-01
Anticipated expiration: 2022-07-12
Also published as: TW564277B; KR20030065272A; JP3967600B2; JP2003220295A; KR100501175B1; CN1435526A

Abstract

The invention provides a lid locking device for a washing machine in an electrically simple structure without using complicated mechanisms, capable of surely locking a lid, improving reliability and reducing a manufacture cost. In the washing machine, an outer tub is freely swingably suspended inside an outer box, a washing and dehydrating tub having a rotary blade at a bottom part is freely rotatably disposed inside the outer tub, the upper part of the outer box is covered with a top cover with a clothes feeding port to the washing and dehydrating tub, the lid is provided so as to open and close the clothes feeding port and the lid locking device 8 for locking the lid so as not to be opened during a dehydrating operation is provided. The lid locking device 8 is constituted of a slider 14 for which a tip is formed at a lid locking part 14a and a permanent magnet 13 is fixed, an electromagnetic coil 9 arranged at a position perpendicular to the slider 14 and moving the slider 14 to a locking position and a release position and the yoke 10 of the electromagnetic coil 9.

Description

The lid blocking device of washing machine

Technical field

The present invention relates to the lid blocking device of washing machine.

Background technology

Full-automatic single casing washing machine for example as shown in Figure 8, the outer shell swing is hung freely and is propped up in outer container 1, rotation is equipped with the washing and dewatering cylinder 3 that the bottom has rotor 2 freely in the outer shell, cover peripheral part of the upper opening of outer container 1 with top cover 4, open and close the top opening of closing washing and dewatering cylinder 3 freely with lid 5.Among the figure, symbol 6 is water-supply valves, and symbol 7 is guidance panels, and this guidance panel is located at the front portion of top cover 4, is equipped with the setting button of setting usefulness such as running content on it.

Above-mentioned lid 5 is set as a kind of like this structure, promptly since washing machine and clothes dryer use integratedly, and, in this case, washing machine top is provided with clothes dryer more, establishes lowlyer so requirement will be covered 5 height, and front and back are divided into bonnet 5a and protecgulum 5b two parts, hinge portion by the centre carries out middle folding, and the rear portion of protecgulum 5b is equipped with the handgrip 25 that carries out opening and closing operations.

In the washing machine of this structure, feedwater, washing, rinsing, dehydration overall process are carried out automatically, at dehydration procedure, disperse because of centrifugal action makes the moisture of washings, so washing and dewatering cylinder 3 rotation at a high speed.Therefore, must closing cap 5 in the dehydration running, and require to cover 5 and be difficult for opening.

In order to make this structure, as shown in Figure 9, the lid switch 21 and the lid blocking device 24 that inspection cover 5 are opened and closed usefulness are located at for example guidance panel 7 one sides of protecgulum 5b, the lid shutdown signal that lid switch 21 sends is output to the well-known micro-processor controlled operation control section of using, confirm to cover 5 closed after, the running that begins to dewater, and, in dehydration running, utilize and cover blocking device 24 and make and cover 5 and be difficult for opening.

This covers blocking device 24, aspect mechanical realization, for example ends recess 24b by card claw stop 24a and card and combines, and the card claw stop 24a card that is formed at guidance panel 7 one sides ends being integrally formed at the card that covers 5 one sides and ending in the recess 24b.

Summary of the invention

The lid blocking device 24 of this mechanical realization is not opened and is made complicated structure in order to ensure lid.And complex structure also can influence reliability.

The objective of the invention is to eliminate the shortcoming of above-mentioned conventional example, a kind of lid blocking device of washing machine is provided, this lid blocking device does not use complicated mechanical, electrical construction is simple, and can really the lid locking be lived, can improve reliability, also can reduce production costs simultaneously.

In order to achieve the above object, the invention provides a kind of lid blocking device of washing machine, wherein outer shell is swung to hang freely and is propped up in outer container, in this outer shell, rotation is equipped with the washing and dewatering cylinder that the bottom has rotor freely, the top of this outer container is covered by the top cover that has in described washing and dewatering cylinder the clothing class input port of dropping into the clothing class, also be provided be used for opening and closing the lid of described clothing class input port and described lid locking is lived and make the described lid blocking device that can not open in the dehydration running that covers.The characteristics of above-mentioned lid blocking device are, described lid blocking device is formed the slide block that covers fastener and be fixed with permanent magnet, is formed on the described stop hole that covers and inserted by described lid fastener, is configured in perpendicular on the position of this slide block and make described slide block put and remove the electromagnet that moves between the position and the yoke of this electromagnet constitutes at the card stop bit by front end.Like this, slide block is just put and is removed between the position at the card stop bit because of the formed magnetic circuit of electromagnet and moves, moving to after the card stop bit puts and remove the position, permanent magnet is held by the yoke of electromagnet, and remain on this position, so do not need complex mechanical construction, utilize the attraction of magnet just the lid locking can be lived.

The 2nd, above-mentioned slide block moves because of carrying out forward and reverse energising to this electromagnet, cutting off after the electromagnet energising, the permanent magnet that is fixed on the slide block is held by the yoke of electromagnet, described slide block only just blocks to be put or removes on the position at the card stop bit of described lid, so slide block moves to the direction that the position was put or removed to the card stop bit really, is moving to after the card stop bit puts or remove the position, held by the yoke of electromagnet under the non-excited state of electromagnet, card ends on this position.Therefore, in dehydration is turned round, will cover locking really, and when washing and dewatering cylinder shut down after the dehydration running finished, remove and cover locking, freely open-close lid.

In addition, in the dehydration running, even for example the socket of washing machine breaks away from, or produce to have a power failure and break off power supply, make control device function out of hand, utilize the attraction of yoke also slide block can be remained on the card stop bit and put, in the dehydration running, keep covering blocking, can guarantee safety.

Description of drawings

Fig. 1 is the vertical view of form of implementation of the lid blocking device of expression washing machine of the present invention.

Fig. 2 is the vertical section front view of disarm state of form of implementation of the lid blocking device of expression washing machine of the present invention.

Fig. 3 is the vertical section front view of blocking of form of implementation of the lid blocking device of expression washing machine of the present invention.

Fig. 4 is the solenoid alive circuit figure to lid blocking device of the present invention.

Fig. 5 is the current waveform figure to the solenoid energising of lid blocking device of the present invention.

Fig. 6 is the vertical view that is provided with the washing machine of lid blocking device of the present invention.

Fig. 7 is the front view after the washing machine that is provided with lid blocking device of the present invention removes a part.

Fig. 8 is the stereogram of washing machine.

Fig. 9 is the vertical view that is provided with the washing machine of existing lid blocking device.

The invention embodiment

Below, with reference to the accompanying drawings form of implementation of the present invention is elaborated.Fig. 1 is the vertical view of form of implementation of the lid blocking device of expression washing machine of the present invention, and Fig. 2 is its vertical section front view, and being equipped with the present invention, to cover the overall structure of washing machine of blocking device the same with conventional example shown in Figure 8, so detailed here.

The washing machine that is equipped with lid blocking device of the present invention is shown in the vertical view of Fig. 6, in the forward position of protecgulum 5b with guidance panel 7 contacted sides, be provided with and detect the lid switch 21 that covers 5 switching usefulness, and for example shown in the vertical section front view of the vertical view of Fig. 6, Fig. 7, in protecgulum 5b sidepiece rear position, with mounting screw will cover blocking device 8 be fixed on top cover 4 below.

Lid blocking device 8 is as Fig. 1～shown in Figure 3, as essential structure, be that the permanent magnet combination that will be fixed on solenoid on the yoke, be fixed on the slide block forms, longitudinally be fixed on the centre position, bottom of yoke 10 of コ font unshakable in one's determination 11 with mounting screw 12, twining solenoid 9 around this iron core 11.

In the two side of this yoke 10 one, top position on be positioned at above-mentioned electromagnetic wire Fig. 9 is provided with the pilot hole 15 of nonmagnetic material slide block 14 described later, the two ends of slide block 14 are moved insert freely in this pilot hole 15, the following central authorities of this slide block are fixed with permanent magnet 13, and the end of slide block 14 that will be positioned at protecgulum 5b one side is as lid fastener 14a.

In this case, slide block 14 is set as section and is the コ font, and the recess that forms below under the state in permanent magnet 13 assigns into this recess, makes the bottom give prominence to and formation protuberance 13a than slide block 14 as the portion of assigning of permanent magnet 13 slightly downwards.

At this state, permanent magnet 13 is configured to level, leaves the gap above the solenoid 9 that vertically disposes, and both are configured in the upright position.Permanent magnet 13 is installed on the slide block 14, so that in the shift position of permanent magnet 13, makes the N utmost point at two ends or the S utmost point come position in opposite directions, top with solenoid 9.

The sidewall of protecgulum 5b is provided with to insert and covers the stop hole 19 that fastener 14a uses, and this fastener is formed on the end of above-mentioned slide block 14.

Figure 4 shows that the power-on circuit of solenoid 9, lid switch 21 and the control device 17 and the solenoid 9 that are connected with the rotation test section 20 of washing and dewatering cylinder 3 are connected in parallel on the source power supply 16, and bidirectional triode thyristor 18 is connected in series with solenoid 9.

Below, the action of the lid blocking device of the present invention of the operation that turns round to dewatering is illustrated.Carry out washing procedure, be converted to dehydration procedure, closing cap 5 is when the output of lid switch 21 is imported in the control device 17, according to the output of control device 17, to solenoid 9 energisings of lid blocking device 8.At this moment, control device 17 is given the gating circuit of bidirectional triode thyristor 18 with the circuits for triggering signal, only makes the positive side energising of the AC wave shape of Fig. 5 (A), and bidirectional triode thyristor 18 waveform that Fig. 5 (B) is such is supplied with solenoid 9.

When the electric current of this waveform leads to solenoid 9, as shown in Figure 2, the iron core 11 extremely relative with the N of permanent magnet 13 is magnetized to the N utmost point, and 10 of the yokes of the S utmost point one side of permanent magnet 13 are magnetized to the S utmost point on the contrary, so magnetic pole strength becomes the repulsion state, slide block 14 beginnings to Fig. 2 left to the direction of arrow move.

When the central mobile of permanent magnet 13 arrives unshakable in one's determination 11 upper portion, become the attraction state on the contrary, thus slide block 14 further left the direction of arrow move, as shown in Figure 3, the lid fastener 14a of front end inserts in the stop hole 19 that is formed on the protecgulum 5b, is blocked by slide block 14 so cover 5.

Then, the timer of control device 17 action, gating signal is interrupted, so bidirectional triode thyristor 18 disconnects, interdicts the energising to solenoid 9, and the yoke 10 that is fixed on permanent magnet 13 tegmentums 5 one sides on the slide block 14 holds, and is fixed on this card stop bit and puts.

Simultaneously, to the dewatering device energising, begin the dehydration running, washing and dewatering cylinder 3 and rotor 2 high speed rotaries.In this dehydration running, even there is socket to break away from, have a power failure, or the situation of control device 17 abilities out of hand and so on takes place, because of permanent magnet 13 remains on the state that the yoke 10 of tegmentum 5 one sides holds, so cover 5 and can not open and close, the security in turning round of can guaranteeing to dewater.This occasion, the protuberance 13a of permanent magnet 13 contacts with yoke 10, works as brake, stops it to be moved further, and holds the position so permanent magnet 13 remains on this.

Carry out dehydration procedure as described above, reach the stipulated time after, because of the output of control device 17 stops the running of dewatering device, finish the dehydration running.At this moment, even interrupt to the dewatering device energising, the washing and dewatering cylinder 3 that many washings are housed can continue rotation because of effect of inertia.Therefore, detect this rotation, till confirming that washing and dewatering cylinder 3 stops the rotation, keep lid card shown in Figure 3 to end state with rotation test section 20.

Then, confirm that washing and dewatering cylinder 3 has stopped the rotation, the reverse current of waveform feeds solenoid 9 shown in just will be when the lid card the ends opposite Fig. 5 (c) of control device 17.Like this, just repel magnetic field being fixed in to produce between permanent magnet 13 on the slide block 14 and the solenoid 9, slide block 14 moves to the right direction of arrow of Fig. 3, and lid fastener 14a deviates from from stop hole 19, removes only cover 5 card.Therefore, available handgrip 25 covers 5 on-off action.

So, become the state of Fig. 2 again, even under this state, stop because the right side protuberance 13a among Fig. 2 of permanent magnet 13 is held by yoke 10, keeping this state, so even external impact etc. is arranged, slide block 14 does not move yet to solenoid 9 energisings.

Claims

1. the lid blocking device of a washing machine, wherein outer shell is swung to hang freely and is propped up in outer container, rotation is equipped with the washing and dewatering cylinder that the bottom has rotor freely in this outer shell, the top of this outer container is covered by having the top cover that drops into the clothing class input port of clothing class in described washing and dewatering cylinder, also be provided with the lid that is used for opening and closing described clothing class input port and described lid locking lived and make the described lid blocking device that to open in the dehydration running that covers, it is characterized in that described lid blocking device is formed the slide block that covers fastener and be fixed with permanent magnet by front end, be formed on the described stop hole that covers and inserted by described lid fastener, be configured in perpendicular on the position of this slide block and make described slide block put and remove between the position electromagnet that moves and the yoke of this electromagnet constitutes at the card stop bit.

2. the lid blocking device of washing machine according to claim 1, it is characterized in that, described slide block moves because of carrying out forward and reverse energising to described electromagnet, cutting off after described electromagnet energising, the described permanent magnet that is fixed on the described slide block is held by this yoke of this electromagnet, and described slide block is only blocked on this card stop bit of described lid is put maybe this releasing position.