JPH10263269A - Fully automatic washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fully automatic washing machine with which cost down is attained by simplifying assembly by easily attaching a permanent magnet to the lid of laundry in/out opening, etc. SOLUTION: Concerning this fully automatic washing machine, a permanent magnet 31 is provided on an outer lid 18 for opening/closing the laundry in/out opening, a lead switch 39 to react to the magnetic force of permanent magnet 31 is provided on a top cover 14 near the opening, and the lead switch 39 is opened/closed by disconnecting/connecting the permanent magnet 31 with the open/close of outer lid 18. Then, the rectangular parallelopiped permanent magnet 31 is fixed by being simultaneously molded in a magnet housing part 18 provided integrally with the rear side section of fore side one end part of outer lid 18 and is provided so as to laterally parallelly and proximately arrange the permanent magnet 31 and the lead switch 39 within the almost same horizontal plane when the outer lid 18 is closed, the lead switch 39 is closed while reacting to the magnetic force of permanent magnet 31, and the permanent magnet 31 is easily and surely attached onto the outer lid 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fully automatic washing machine in which a reed switch is operated by opening and closing a lid to which a permanent magnet is attached.

[0002]

2. Description of the Related Art Conventionally, for example, in a fully automatic washing machine, when the outer lid is opened while the washing and spin-drying tub is rotating, the power of a motor for rotating the washing and spin-drying tub is turned off, and further, a brake device is provided. Activate, the washing and dewatering tub is forcibly stopped. As a result, safety is ensured against the user inadvertently putting his hand in the rotating washing and dewatering tub. In such a device, a permanent magnet is provided on the outer lid and a reed switch is provided opposite to the permanent magnet, and when the outer lid is closed, the reed switch is closed in response to the magnetic force of the permanent magnet. Power can be supplied to the motor, and when the outer lid is opened, the permanent magnet is separated, the magnetic force is weakened, the reed switch is opened, and the power to the motor is turned off. The conventional fully automatic washing machine that operates as described above is configured as follows.

Hereinafter, a conventional technique will be described with reference to FIGS. FIG. 20 is a side view of a main part, FIG. 21 is a partial sectional view, and FIG. 22 is a characteristic diagram of a permanent magnet.
20 to 22, reference numeral 1 denotes a fully automatic washing machine, and 2 denotes an outer box in which a water receiving tub is elastically suspended inside by an elastic suspension mechanism (not shown). Is stored. Reference numeral 3 denotes a top cover having a laundry access opening 4 provided at the upper end of the outer box 2, and reference numeral 5 denotes an outer lid pivotally supported by the top cover 3 which opens and closes the laundry access opening 4. Reference numeral 6 denotes a control unit provided in the top cover 3, and 7 denotes a rectangular solid permanent magnet mounted in a concave portion 8 formed on the inner side of the front side of the outer lid 5. It is fitted together with a sponge-like elastic member (not shown) so as to prevent rattling and sound generation, and is configured so that the opening of the recess 8 is welded or adhered to the cover plate member 9 so as not to fall off.

A reed switch 10 is mounted inside the top cover 3 so as to face the permanent magnet 7 below the opening and closing direction of the outer cover 5 when the outer cover 5 is closed. When the outer lid 5 is closed, the permanent magnet 7 and the reed switch 10 are closest to each other. At this time, the distance between the permanent magnet 7 and the reed switch 10 in the opening / closing direction of the outer lid 5 is H. _{It is 0} . On the other hand, when the outer lid 5 is opened, the opening / closing dimension L of the outer lid 5 increases, and the separation dimension H between the permanent magnet 7 and the reed switch 10 increases.
The magnetic force F of the permanent magnet 7 acting on the reed switch 10 decreases. Position the magnetic force F becomes F ₁ to F ₂ is the operation range of the reed switch 10, i.e., open and close the outer lid 5 dimensions L
Reed switch 10 but be open until the L ₁ ~L ₂
Opens, and the power supply to the motor stops. In addition, the outer lid 5
For separation dimension of the permanent magnet 7 and the reed switch 10 is H ₀ in the closed state, the separation dimension of both when reed switch 10 is operated to open the _{(H 0 + L 1) ~} (H 0 + L
₂ )

[0005] However, in the above prior art,
To attach the permanent magnet 7 to the outer lid 5, the cover plate member 9 must be welded or bonded after being fitted into the recess 8 together with the elastic member, and the elastic member or the cover plate member that is separate from the permanent magnet 7. 9 and also requires an assembling operation for attaching the elastic member and the cover plate member 9 to the outer lid 5, so that the working time is lengthened, and the assembling is not easy and costly. .

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a lid for opening and closing an opening for taking in and out laundry, and a permanent cover facing a reed switch. When installing the magnet, no separate parts are required, the assembly work time is not lengthened, it can be fixed easily and securely, and the reed switch can be easily and reliably mounted. It is an object of the present invention to provide a fully automatic washing machine capable of reducing costs.

[0007]

A fully automatic washing machine according to the present invention is provided with a permanent magnet on a lid for opening and closing an opening for taking in and out laundry, and a reed switch near the opening for responding to the magnetic force of the permanent magnet. In a fully automatic washing machine in which a permanent magnet comes and goes with the opening and closing of the lid to open and close the reed switch, the permanent magnet is fixed to a magnet storage unit integrally formed with the lid, and the permanent magnet and the reed switch are connected to each other. Are provided side by side when the lid is closed, and the reed switch operates in response to the magnetic force of the permanent magnet. It is characterized in that a part is exposed to the outside from the opening of the magnet storage part,
Further, the reed switch is mounted on the mounting plate, and the mounting plate is mounted by holding the mounting plate on a rib portion protruding on the inner surface side of the top cover provided with the laundry entrance opening. The reed switch is further mounted and held on a rib portion protruding on the inner surface side of the top cover provided with the laundry access opening. Also, a fully automatic washing machine having a water receiving tub elastically suspended in an outer box and containing a washing and dewatering tub therein, and an inner lid for opening and closing an opening of a tub cover provided above the water receiving tub. In the machine, the tank cover is provided with a reed switch on the upper surface,
The inner lid has a permanent magnet fixed to a magnet storage portion having a locking claw and an opening, and the reed switch operates in response to a change in magnetic force of the permanent magnet corresponding to opening and closing of the inner lid. It is a feature.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

First, a first embodiment will be described with reference to FIGS. 1 is a longitudinal sectional view showing a schematic configuration, FIG. 2 is a perspective view of an upper part with a part cut away, FIG. 3 is a sectional view of a main part viewed from a side, and FIG. FIG. 5 is a view of the state where the outer lid is closed as viewed from below, FIG. 5 is a cross-sectional view of a main part viewed from the front side, FIG. 6 is a characteristic diagram of the permanent magnet, and FIG. 7 is a circuit diagram. , FIG. 8 is a block diagram, and FIG. 9 is a partial plan view of the operation panel, and FIG.
FIG. 9B is a partial plan view showing normal operation, FIG. 9B is a partial plan view showing abnormal lid opening, FIG. 9C is a partial plan view showing abnormal imbalance, and FIG. FIG. 11 is a perspective view of the main part of the modified embodiment from below, FIG. 11 is a cross-sectional view of the main part of the first modified embodiment, and FIG. 12 is a perspective view of the main part of the second modified embodiment from below. 13 is a sectional view of a main part of a second modification, FIG. 14 is a perspective view of the upper part of a fully automatic washing machine according to a third modification, and FIG. 16 is a cross-sectional view of the main portion of the outer lid according to a third modification, and FIG. 16A is a cross-sectional view taken along the line AA in FIG. FIG. 16 (b)
FIG. 16 is a cross-sectional view taken along the line BB in FIG. 15.

In FIG. 1 to FIG. 9, reference numeral 11 denotes a fully automatic washing machine for both dehydration, which is provided with a top cover 14 having a laundry inlet / outlet 13 at an upper end of an outer box 12 and a lower end at a lower end. Has legs 15 at the four corners of the bottom. A control unit 16 for controlling the washing and dewatering process is provided at the front of the top cover 14.
Is provided on the outer surface of the top cover 14 and the outer lid 18 for opening and closing the laundry access opening 13.
Is provided. Although not shown, a water inlet for connecting a water supply hose is provided at a rear portion of the top cover 14.

A water receiving tub 20 is elastically suspended inside the outer case 12 by an elastic suspending mechanism 19, and an upper end portion of the water receiving tub 20 is used for taking in and out of laundry and the like. A tank cover 22 having an opening 21 is fixed. A washing and dewatering tub 24 provided with a balance ring 23 at an upper end portion is rotatably housed in the water receiving tub 20.
5 and a lint filter (not shown) are provided, and a stirrer 26 is provided on the inner bottom.

A motor 2 is provided on the outer bottom of the water receiving tank 20.
7, a mechanism 28 for transmitting the rotational force of the motor 27 to the washing / dewatering tub 24 and the agitator 26, and a drain valve 29, a drain hose 30, and the like are further provided. The mechanism 28 includes the washing and dewatering tub 24 and the stirring body 2.
A clutch mechanism for switching transmission of rotational force to the motor 6,
The washing and dewatering tub 24 is configured to have a brake device and the like for braking and releasing the braking.

Here, the clutch mechanism and the brake device of the mechanism section 28 and the drain valve 29 are connected to the agitator 26 in a state where the drain valve 29 is closed and the washing and dewatering tub 24 is stopped during washing in the washing process. The torque of the motor 27 is transmitted,
At the time of dehydration, the drain valve 29 is opened and the rotational force of the motor 27 is transmitted to the agitator 26 and the washing and dewatering tub 24. And at the time of washing, the stirrer 26 is rotated forward and reverse,
Washing or the like is performed on the laundry put in the tub by washing water flowing in the tub. In addition, at the time of dehydration, dehydration is performed by rotating both the stirring body 26 and the washing and dehydrating tub 24 at high speed. Further, rinsing is performed by opening the drain valve 29 and pouring water with the stirring body 26 and the washing and dewatering tub 24 stationary. Further, a rectangular parallelepiped permanent magnet 31 is formed integrally with the outer lid 18 and fixed to the inner side, which is the back surface of the front end on one side of the outer lid 18. That is,
The permanent magnet 31 is fixed so as to simultaneously form the box-shaped magnet housing portion 32 and to house the permanent magnet 31 in the magnet housing portion 32 when the outer lid 18 is formed of a synthetic resin material. . The through hole 33 is formed in the center of the permanent magnet 31. During the integral molding process, the permanent magnet 31 is supported and processed by inserting the through hole 33 into a pin of a molding die. After the forming process, the through-hole 33 is exposed from the opening 34 formed by the pin of the forming die of the magnet housing portion 32.

An operating member 35 extends rearward of the outer lid 18 at the rear thereof. On the other hand, at the rear of the top cover 14, an operating lever 36 with which the distal end of the operating member 35 of the outer lid 18 is engaged is provided. When the outer cover 18 is widely opened, the operating member 35 is rotated around the rotation shaft 38 of the outer cover 18, and the operating lever 3 is engaged with the distal end of the operating member 35.
6 is depressed, and the abnormal vibration detection switch 37 is opened by the depressing movement of the operation lever 36. Conversely, when the outer lid 18 is closed, the distal end of the operating member 35 rotates upward, the operating lever 36 that has been pressed down moves upward, and the abnormal vibration detection switch 37 closes.

On the other hand, the top cover 14 has a reed switch 39 in the side front portion thereof, and when the outer cover 18 is closed, the reed switch 39 is arranged so as to be arranged side by side with respect to the permanent magnet 31 fixed to the outer cover 18. It is attached to the edge position of the laundry entry / exit opening 13 so as to face each other in the same horizontal plane. The power of the motor 27 is turned off and on by the opening and closing operation of the reed switch 39. The reed switch 39 is attached to the top cover 14 by screwing the reed switch 39 to the mounting plate 40 and bending the bent portion 41 at one end of the mounting plate 40 to which the reed switch 39 is mounted.
Control unit 1 provided in front of top cover 14
6, a rib 4 vertically extending downward in the storage recess 42.
3 through the side wall opening 44 of the storage recess 42 for positioning and holding.
The mounting is performed by screwing the mounting plate 40 to the mounting portion 45 on the inner surface side of the mounting plate. 46 is a reed switch 39
Lead wire 39 from the reed switch 39 to the side wall opening 44
The connector 47 provided at the end of the lead wire 46 is connected to the connector 49 of the lead wire 48 of the control unit 16.

When the outer cover 18 is closed, the permanent magnet 31 and the reed switch 39 are arranged side by side substantially horizontally, and the two are closest to each other. The distance between the outer cover 39 and the outer cover 39 in the opening and closing direction is substantially zero. For this reason, when the distance between the permanent magnet 31 and the reed switch 39 is the same as the distance H ₀ between the permanent magnet and the reed switch when the outer lid is closed in the above-described conventional technique, FIG. As shown by a two-dot chain line, the outer lid 18 is slightly opened. Further, when the outer cover 18 is opened, the opening / closing dimension L of the outer cover 18 increases, and the separation dimension between the permanent magnet 31 and the reed switch 39 increases.
, The magnetic force F of the permanent magnet 31 acting on the magnet becomes smaller. This magnetic force F is the operating range of the reed switch 39, F _{1 to} F ₂
, Ie, the opening / closing dimension L of the outer lid 18 is L _{01 to} L
By opening the reed switch 39 until it reaches ₀₂ , the reed switch 39 is opened, and the motor 27 is disconnected from the power supply. Note that the opening / closing dimensions L _{01 to} L _{02 at} this time are such that when the outer cover 18 is closed, the separation dimension between the permanent magnet 31 and the reed switch 39 is substantially 0, so that the two dimensions when the reed switch 39 is opened as it is. Is the separation dimension of

The overall circuit configuration is as shown in FIG. 7. The electronic unit 50 is divided into a first electronic unit 51 and a second electronic unit 52 and is built in the control unit 16. I have. Further, the electronic unit 50 is provided with a microcomputer 53,
The operation of the washing / dewatering process is controlled based on a preset operation program and control contents set prior to the start of operation. The microcomputer 53 includes a power switch 54, various operation switches 55, and a reed switch 3.
9. Operation signals of the water level sensor 56, the rotation sensor 57, and the abnormal vibration detection switch 37 are input.

The operation of the motor 27, the drain valve 29, and the water supply valve 59 is controlled by the microcomputer 53 via the drive circuit 58 based on these operation signals, and the buzzer 60 notifies the end of the stroke according to the control contents. In addition, a display operation of notifying of an abnormality and indicating a stroke state by the various display units 61 is performed. In the circuit diagram of FIG. 7, reference numeral 62 denotes a signal line, which transmits a signal from a connection point between the abnormal vibration detection switch 37 and the reed switch 39 connected in series to the first electronic unit 51. The order of the opening and closing operations of the abnormal vibration detection switch 37 and the reed switch 39 is determined based on the input signal.

In the apparatus having the above-described structure, the power on / off button 63 of the operation panel 17 is operated and the power switch 54 is turned on. When the outer cover 18 is closed, the permanent magnet 31 fixed to the outer cover 18 and the top cover 1 are closed.
The reed switch 39 mounted in the side 4 is located side by side in substantially the same horizontal plane, the reed switch 39 is closed in response to the magnetic force of the permanent magnet 31, and the abnormal vibration detection switch 37 is closed. Become. After that, a predetermined laundry dehydration process setting is input through the operation panel 17,
The process is started by operating the start / pause button 64 of the operation panel 17. Then, while the normal operation is continued, the start / pause button 64 is continuously lit to indicate that the normal operation is being performed.

Also, during the dehydration process, the outer lid 18 slightly
For example, when opened about 20 mm, the permanent magnet 31 and the reed switch 39 are separated by a certain distance, and
Is opened, a signal from this opening operation is input to the first electronic unit 51 through the signal line 62, and the microcomputer 53 stops supplying power to the motor 27 during the dehydration operation. Then, the brake device of the mechanism 28 operates,
The rotation of the washing and dewatering tub 24 stops. When the outer lid 18 is further opened greatly, the tip of the operating member 35 rotates downward,
The operating lever 36 with which the distal end of the operating member 35 is engaged is pushed down, and the abnormal vibration detection switch 37 is opened.

When the outer cover 18 is opened, the electronic unit 5
0 is the reed switch 39 and the abnormal vibration detection switch 37
Are detected by the signal from the signal line 62, and when the abnormal vibration detection switch 37 is sequentially opened after the reed switch 39, it is determined that the outer lid 18 is in the open state and the lid is opened abnormally. Is notified to the sound of the buzzer 60 for a certain period of time, and the start / pause button 64 on the operation panel 17 blinks and lights up, and the water injection / rinse lamp of the course display section 65 lights up in green. When the reed switch 39 is closed with the outer lid 18 closed and the laundry in the washing and dewatering tub 24 is in an unbalanced state, and the abnormal vibration occurs, the abnormal vibration detection switch 37 is activated. The opening operation is performed, and the occurrence of abnormal vibration is notified by the sound of the buzzer 60. At the same time, the start / pause button 64 blinks and lights, and the water injection / rinsing lamp of the course display section 65 lights and displays in red.

With the above configuration, the permanent magnet 3
An elastic member that fits 1 into the front side back surface portion of the outer lid 18 to prevent rattling when the permanent magnet 18 is fixed;
It can be fixed by integral molding with the outer lid 18 without using a separate member such as a lid plate member that is welded or bonded after being fitted, and can be easily and simply performed without a long assembling operation. It can be fixed securely. Further, since the permanent magnet 31 and the reed switch 39 can be arranged side by side at a close distance in a substantially same horizontal plane with the outer lid 18 closed, the magnetic force acting on the reed switch 39 is increased, and the reed switch 39 is increased. 39 reliably performs the closing operation. Further, when the outer cover 18 is opened and closed, the reed switch 39 responds in a relatively wide range in the opening and closing direction. Even if the outer cover 18 is slightly opened due to a slight vibration or the like, the reed switch 39 is opened immediately. It is easy to use without operating. Further, the mounting of the reed switch 39 is performed by pressing the mounting plate 40 on which the reed switch 39 is mounted by pressing the bent portion 41 at one end thereof against the rib 43 suspended in the storage recess 42. Since it is attached to the inner surface side of the top cover 14 by positioning and holding, the positioning is easy and the assembly is simple and reliable.

A reed switch 39 is provided on the front side of the outer lid 18 to detect opening and closing of the outer lid 18.
Separately, an abnormal vibration detection switch 37 is provided on the rear side of the outer lid 18 to detect the imbalance state of the laundry in the washing and spin-drying tub 24, and the operation order of the reed switch 39 and the abnormal vibration detection switch 37. Can be detected, so that a lid opening abnormality with the outer lid 18 kept open can be reliably transmitted to the user. Further, even when a process including a dehydration process is performed with the outer cover 18 kept open, the outer cover 1
It can be known from the notification of the lid opening abnormality that the opening 8 is open, and since the outer lid 18 is open, the operation is stopped in the dehydration process and the user does not notice that the process is completed without performing the dehydration. There is no misunderstanding. In addition, when only the washing step or the like that does not include the dehydration step is performed with the outer lid 18 opened, the abnormality notification is not performed because there is no need for the abnormality notification. Further, since the occurrence of abnormal vibration due to the unbalanced state and the lid opening abnormality in the dehydration process are notified in different forms, the two can be immediately discriminated.

The mounting of the reed switch 39 is not limited to the above-described embodiment.
The first modification and the second modification shown in FIG. That is, in the first modified example shown in FIGS. 10 and 11, the reed switch 39 is directly attached to the inner surface portion 66 of the inner wall constituting the laundry access opening 13 of the top cover 14a. The reed switch 39 is sandwiched between three ribs 68 vertically extending downward from the ceiling surface 67 of the top cover 14a and a partition wall 69 that partitions the inside of the top cover 14a, and is formed on the inner surface portion 66. The engaging projection 71 formed on the extended rib 70 is engaged with a mounting hole 72 formed on the reed switch 39 while being elastically deformed so as not to fall down. With this configuration, the reed switch 39 can be mounted without using a mounting plate or a mounting screw, and mounting is easier than in the above embodiment.

In the second modification shown in FIGS. 12 and 13, the reed switch 39 on the ceiling 67 of the top cover 14b is directly attached. Attachment is performed by projecting a rib 73 and a projection 74 on the ceiling surface 67 of the top cover 14b, and projecting a locking rib 75 on the inner surface portion 66 of the inner wall. 7
4 is engaged with the mounting hole 72, and the reed switch 39 is sandwiched between the inner surface portion 66 of the inner wall and the rib 73. With this configuration, the reed switch 39 can be mounted without using a mounting plate or mounting screws, and the mounting is easier than in the above-described embodiment, as in the first modification.

Further, the fixing of the permanent magnet 31 is not limited to the above-described embodiment, and may be configured, for example, as in a third modification shown in FIGS. That is, FIG.
4 to 16, reference numeral 11a denotes a fully automatic washing machine, and a rectangular parallelepiped permanent magnet 31a is integrally formed with the outer lid 18a on the inner side of the outer lid 18a, which is the back surface of one of the front ends. Has been fixed. The permanent magnet 31a simultaneously forms the substantially box-shaped magnet housing portion 76 when the outer lid 18a is formed of a synthetic resin material, and simultaneously forms the magnet housing portion 76.
It is fixed so as to house the permanent magnet 31a therein. Note that the magnet storage section 76 contains the stored permanent magnet 31.
The circular opening portions 77a and 77b are formed so as to expose the lower surface and a part of the upper surface of the permanent magnet 31a, respectively.
Notch grooves 78a, 78b and concave portions 79a, 79b are formed so that a part of the four side surfaces is exposed.

Each of these circular openings 77a, 77b,
The notches 78a and 78b and the recesses 79a and 79b are formed by a support member that supports the permanent magnet 31a in a molding die when the permanent magnet 31a is integrally formed with the outer lid 18a. The circular opening 77b that opens on the upper surface of the outer cover 18a is concealed by attaching a label 80 to the outer cover 18a. With this configuration, the simple rectangular parallelepiped permanent magnet 31a is attached to the outer lid 1.
It can be fixed by simultaneous molding with 8a, and the fixing is easier than in the above embodiment.

Next, a second embodiment will be described with reference to FIGS.
This will be described below. FIG. 17 is a top sectional view of a fully automatic washing machine, FIG. 18 is a perspective view of a main part of a water receiving tank, and FIG.
FIG. 3 is a partial sectional view of the inner lid. The same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted. The configuration of the present embodiment that is different from the first embodiment will be described.

In FIG. 17 to FIG. 19, reference numeral 81 denotes a fully automatic washing machine for both dehydration, and a top cover 82 having a not-shown laundry access opening is provided at the upper end of the outer box 12. The control unit 16 is provided at the front of the top cover 82 so that an operation panel (not shown) is provided on the outer surface of the top cover 82, and an outer lid 83 that opens and closes an opening of a laundry or the like is provided. ing. A water inlet 84 for connecting a water supply hose (not shown) is provided at the rear of the top cover 82. A water receiving tank 85 is elastically suspended inside the outer box 12 by an elastic suspending mechanism (not shown).
Inside 5, a washing and dewatering tub 24 provided with a balance ring 23 at an upper end portion is rotatably housed.

Further, a tub cover 86 made of a synthetic resin having an inner opening for taking in and out of laundry and the like is fixed to the water receiving tub 85 at the upper end thereof.
6 is provided with an inner lid 87 made of synthetic resin for opening and closing the inner opening. The inner cover 87 is provided with a handle 88 for opening and closing at a front portion thereof, and a water receiving portion 89 for supplying water into the washing and dewatering tub 24 at a rear portion. A rectangular parallelepiped permanent magnet 31a is attached to the inner lid 87 so as to be embedded near the handle 88. On the other hand, a reed switch 39 is attached to the upper surface of the tank cover 86 at a position in the closed inner lid 87 that is arranged side by side with the permanent magnet 31a.
When the inner lid 87 is closed, the closing operation is performed in response to the magnetic force of the adjacent permanent magnet 31a. When the inner cover 87 is opened, the permanent magnet 31a is separated from the reed switch 39, the magnetic force acting on the reed switch 39 is weakened, and the reed switch 39 is opened.

The permanent magnet 31a is attached to the inner cover 87 so as to fit into a substantially box-shaped magnet housing portion 90 formed by a kiss mold method when the inner cover 87 is formed. The magnet storage portion 90 has a substantially box-like shape provided with a rectangular opening 91 for fitting the permanent magnet 31a on the upper surface of the inner cover 87 and provided so as to protrude into the water receiving tank 85. A locking claw 92 for preventing the permanent magnet 31a from dropping is formed on the opposite side of the rectangular opening 91, and a locking claw 92 is formed on a bottom portion facing the locking claw 92 by a molding die. An opening 93 is provided. The fitting of the permanent magnet 31 a into the magnet housing portion 90 is performed by elastically deforming the locking claw 92 from the rectangular opening 91.

On the other hand, a motor and a mechanism for transmitting the rotational force of the motor to the washing / dewatering tub 24 and the agitator are provided at the outer bottom of the water receiving tub 85, not shown, as in the first embodiment. Have been. The mechanical section includes a clutch mechanism for switching transmission of rotational force to the washing and dewatering tub 24 and the stirring body, a brake device for braking and releasing the braking of the washing and dewatering tub 24, and the like. The operation of the motor, the brake device, and the like is controlled based on the control content set in the control unit 16, and when the reed switch 39 is closed, power can be supplied to the motor that rotates and drives the washing and dewatering tub 24. When the reed switch 39 is opened, the power of the motor is turned off.

In the apparatus having such a structure, the power on / off button on the operation panel is operated to turn on the power switch.
4, when the inner lid 87 is closed and the inner lid 87 is closed, the permanent magnet 31a attached to the inner lid 87 and the reed switch 39 attached to the tub cover 86 are arranged side by side, and the reed switch responds to the magnetic force of the permanent magnet 31a. 39 is closed. afterwards,
The outer lid 83 is closed, the setting input of a predetermined washing and dewatering process is performed through the operation panel, and the predetermined process is started. At this time,
If the inner lid 87 is not sufficiently closed, the reed switch 39 does not close and the operation is not started. Also, if the inner lid 87 is slightly opened due to abnormal vibration or the like during the dehydration process,
The permanent magnet 31a and the reed switch 39 are separated from each other by a predetermined distance or more, the reed switch 39 is opened, and the power supply to the motor during the dehydration operation is stopped. Then, the brake device of the mechanism operates, and the rotation of the washing and dewatering tub 24 stops.

With the above-described configuration, the permanent magnet 31a and the reed switch 39 face each other in a state where the inner cover 87 is closed and the reed switch 39 is located side by side, so that the magnetic force acting on the reed switch 39 is increased. The reed switch 39 is reliably closed. In addition, by closing the outer lid 83 without sufficiently closing the inner lid 87 and starting the operation, it is possible to prevent the inner lid 87 from dancing and generating a loud noise during the dehydration process. The attachment of the permanent magnet 31a to the inner lid 87 for performing this operation can be performed simply and reliably without using a special separate member and without assembling work requiring a long time.

In the above embodiment, the outer lid 83 is also provided.
By attaching a permanent magnet and a reed switch to the top cover 82, the same operation and effect as in the first embodiment can be obtained.

[0036]

As is apparent from the above description, according to the present invention, the permanent magnet can be simply and securely fixed to the lid without using a separate member without a long assembly operation. In addition, the reed switch can be easily and reliably mounted, and effects such as easy assembly and reduced cost can be obtained.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a schematic configuration of a first embodiment of the present invention.

FIG. 2 is a perspective view of the upper part of the first embodiment of the present invention, with a part cut away.

FIG. 3 is a cross-sectional view of a main part of the first embodiment of the present invention as viewed from a side.

FIG. 4 is a view of the first embodiment of the present invention when the outer lid is closed, as viewed from below.

FIG. 5 is a cross-sectional view of a main part of the first embodiment of the present invention as viewed from the front side.

FIG. 6 is a characteristic diagram of the permanent magnet according to the first embodiment of the present invention.

FIG. 7 is a circuit diagram according to the first embodiment of the present invention.

FIG. 8 is a block diagram according to the first embodiment of the present invention.

9A and 9B are partial plan views of the operation panel according to the first embodiment of the present invention. FIG. 9A is a partial plan view showing a normal operation, and FIG. 9B is a partial plan view showing a lid opening abnormality. FIG. 9 (c) is a partial plan view showing an imbalance abnormality.

FIG. 10 is a perspective view from below of a main part of a first modified example according to the first embodiment of the present invention.

FIG. 11 is a cross-sectional view of a main part of a first modified example according to the first embodiment of the present invention.

FIG. 12 is a perspective view from below of a main part of a second modified example according to the first embodiment of the present invention.

FIG. 13 is a cross-sectional view of a main part of a second modification according to the first embodiment of the present invention.

FIG. 14 is a perspective view of an upper part of a fully automatic washing machine of a third modification according to the first embodiment of the present invention.

FIG. 15 is a diagram of a third modified example according to the first embodiment of the present invention as viewed from below a main part of the outer lid.

16 is a cross-sectional view of a main part of an outer lid according to a third modification of the first embodiment of the present invention. FIG. 16 (a) is a cross-sectional view taken along the line AA in FIG. 15, and FIG. FIG. 16B is a cross-sectional view as viewed in the direction of arrows BB in FIG. 15.

FIG. 17 is a sectional view of an upper portion of the fully automatic washing machine according to the second embodiment of the present invention.

FIG. 18 is a perspective view of a main part of a water receiving tank according to a second embodiment of the present invention.

FIG. 19 is a partial sectional view of an inner lid according to the second embodiment of the present invention.

FIG. 20 is a side view of a main part of the related art.

FIG. 21 is a partial sectional view of a conventional technique.

FIG. 22 is a characteristic diagram of a permanent magnet in the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 12 ... Outer box 13 ... Laundry opening / closing opening 14 ... Top cover 18, 18a ... Outer cover 31, 31a ... Permanent magnet 32, 76, 90 ... Magnet storage part 34, 93 ... Opening part 39 ... Reed switch 40 ... Mounting plate 41 ... Bending portions 43, 68, 73 ... Ribs 70 ... Extension ribs 71 ... Locking projections 72 ... Mounting holes 74 ... Projections 75 ... Locking ribs 77a, 77b ... Circular opening portions 78a, 78b ... Notch grooves 79a, 79b ... Recess 85 ... water receiving tank 86 ... tank cover 87 ... inner lid 92 ... locking claw

Claims (5)

[Claims] 1. A permanent magnet is provided on a lid for opening and closing an opening for taking in and out laundry, and a reed switch is provided near the opening to respond to the magnetic force of the permanent magnet. In a fully automatic washing machine in which the reed switch is opened and closed by separating and connecting,
Affixing the permanent magnet to a magnet housing integrally formed with the lid, and providing the permanent magnet and the reed switch so as to be side by side when the lid is closed,
A fully automatic washing machine wherein the reed switch operates in response to the magnetic force of the permanent magnet. 2. The fully automatic washing machine according to claim 1, wherein the permanent magnet has a part of its outer surface exposed to the outside through an opening of the magnet storage part. 3. The reed switch is mounted on a mounting plate, and the mounting plate is mounted by holding the mounting plate on a rib portion protruding from an inner surface of a top cover provided with a laundry access opening. The fully automatic washing machine according to claim 1, wherein the washing machine is provided. 4. A reed switch mounted on a top cover provided with a laundry access opening and held by a rib portion protruding from an inner surface of the top cover.
Fully automatic washing machine as described. 5. A water receiving tub which is elastically suspended in an outer case and houses a washing and dewatering tub therein, and an inner lid for opening and closing an opening of a tub cover provided on an upper part of the water receiving tub. In the automatic washing machine, the tub cover is provided with a reed switch on an upper surface, and the inner lid is formed by fixing a permanent magnet to a magnet accommodating portion having a locking claw and an opening. A fully automatic washing machine which operates in response to a change in magnetic force of the permanent magnet corresponding to opening and closing.