JPS58200780A - Safety device for dehydrating and washing machines - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a safety device for a washing machine that automatically turns off the power and stops operation if abnormal vibrations occur during spin-drying rotation of a washing and washing tub.

This type of safety device prevents the spinning of water from occurring due to the swinging of the tank when spin-driving is performed in an unbalanced state due to uneven clothing.
It detects the change of 1γ and turns off the power. The user opens the lid above the spin-drying/washing tub, corrects the unevenness of the clothes in the spin-drying/washing tub, and then closes the lid. In this case, the safety device is automatically reset by the opening and closing operation of the lead, and it is inevitable that the safety device will become energized again. It's 4.
During normal dehydration operation, it is necessary to stop the dehydration operation when the lid is opened to ensure safety.

The present invention provides a safety device that requires relatively complicated operations as described above, with an extremely simple structure that also functions as an interrupter for energization by opening and closing the lid. Examples thereof will be described below with reference to the accompanying drawings.

In the figure, 1 is the outer frame of the washing machine, and inside the frame, a plurality of support rods 3 y (suspended by a plurality of support rods 3 y (vibration proof) support a water tank 4 in an anti-vibration manner.A water tank Inside the water tank 4, a dewatering/washing tub 6 with a clothes agitation pulsator 5 rotatably disposed at the inner bottom is arranged so that it can be rotated for dehydration. , a bearing box 8, etc. are fixed.A substantially donut-shaped aquarium cover 9 is arranged at one edge of the aquarium 4, and has functions such as reinforcing the upper edge of the aquarium and preventing water droplets from flying off. are doing.

10 is an upper tank part arranged above the outer frame 1, approximately in the center part,
A lid 11 is provided so as to be openable and closable via the shaft support portion 11A. Reference numeral 12 denotes a rear panel section of the upper tank section 10, in which electric control parts such as a time switch (not shown), a changeover switch 13, and a water supply solenoid valve (not shown) are disposed, and there are also electrical control parts according to the present invention. However, a safety device 14 is provided.

The movements of the safety device 14 are as described above, and can be roughly divided into three types. That is, one [] is an operation of stopping the driving of the drive motor 7 when the lid 11 is opened during the dehydration operation. Second, the clothes were extremely loose in the spin-drying/washing tub 6.

When performing dewatering operation in a so-called unbalanced state, in order to prevent the occurrence of abnormal vibrations caused by this, the vibration of the water tank 4 or the water tank force (-9) is detected and the drive motor 7 is This is an action to stop the drive.Furthermore, the third action is when the user operates the safety device 14.
This is an operation that automatically resets +Ji when the lid 11 is opened, the clothes in the spin-drying/washing tub 6 are corrected, and the lid 11 is closed.

Hereinafter, the configuration of the safety device 14 will be explained in detail based on FIG. 2. A retainer 16 made of an insulating material such as synthetic ml resin is crimped to the tip and is close to the operating protrusion 16 projecting rearward of the lid 11 and is engaged and released when the lid 11 is opened and closed, and is connected to the switch board 17. The movably supported switch lever 18 is pressed upward by the engagement lever 16 by the closing operation of the lid 11, so that the switch lever 18 pivots around the pivot supporting protrusion 19 of the switch base 17. As shown in FIG. 2, it rotates clockwise.

The switch lever 18 is made of steel wire, and has a coil portion 2o formed into a round shape with a round branch, which is loosely fitted into the protrusion portion 19 of the switch board 17 described above.

The switch board 17 is made of a thin steel plate, and has a substantially U-shaped cross section taken in a direction 4g perpendicular to the plane of the paper in FIG. The above-mentioned sliding switch 2 is placed inside this switch board 17.
Place 1.

Switch 21 (d) A switch base 22 made of a synthetic resin material having electrical insulation properties, a fixed side contact piece 24 having a fixed contact 23 fixed to its tip, a button 25 made of a synthetic resin material to its tip, and the above-mentioned fixed contact. It is constructed by integrally fixing a movable side contact piece 26A to which a rI movable contact 26 corresponding to 23 is fixed.By pressing the button 26 upward, the riI movable contact 26 comes into contact with the fixed contact 23. Electrical conduction occurs, and the drive motor 7 becomes capable of driving tjf.

In the switch lever 18, the above-mentioned member 41f16 and
A safety lever 27 made of a thin steel plate or the like is attached to the coil part 20 in the vicinity of the middle arrow part. J Kono Safety L/Bar 2
7ii, l・-tabe k 2 ツ(') く 4JI' 1
ll(28A.

Bend it into an abbreviated shape at 2sB, and attach the lower end 29 to the water tank 4 described above.
16 on the upper edge of the tank cover 9 and on the outside of the aquarium cover 9.

The substantially water-shaped portion 3o between the bent portions 28A and 28B is slightly inclined and positioned at a predetermined distance from the upper end periphery of the aquarium cover 9.

Further, the safety lever 27 has the lower end of the substantially vertical part 31 bent downward on the lid 11 side of the switch base 17, and the lower end of the substantially vertical part 31 is further bent into the locking part 32 bent on the lid 1-117411. It has a sliding opening 33 at 10F.

-1, the upper end of the safety lever 27 is bent toward the switch 21 side, and the bent portion is formed with an elongated hole 34A through which the switch lever 18 described above is inserted. A protruding piece 34B that is subjected to suppression is formed.

] The protruding piece 34B of 11L is located below the AjJri button 25, and the switch lever 18 is located below the operating protrusion 16.
1, the button 25 is moved in the L direction via the protruding piece 34B, and the contacts 26 and 23 are brought into contact with each other.

A compression spring 36 is interposed between the switch board 17 and the safety lever 270 as a pressing spring material. This compression spring 35 is connected to a burring hole-shaped projection 36 integrally formed on the bottom surface of the switch board 17 and a safety lever 2.
By inserting the safety lever 27 between the horizontal part 3o of the switch board 17 and the locking cylinder part 37 formed integrally toward the F direction, the safety lever 27 can be rotated clockwise around the locking part 32 of the switch board 17. direction, and the switch board 17 is
kj and presses downward.

A thin plate-like cover 3 is provided at the upper opening of the switch board 17.
8 is covered by being fitted and fixed to a protrusion 39 formed on the side wall of the switch board 17.

The above is an outline of the configuration of the safety device 4, and its operation will be explained below according to the diagram σ.

FIG. 2 shows a state in which the lid 11 is opened and the C1 contacts 23 and 26 are separated from each other.

FIG. 3 shows the lid 11 in a closed state. That is, the locking element 16 of the switch lever 18 is pushed upward by the operation protrusion 15 of the lid 11, and the button 25 is pressed upward via the protrusion 34B of the safety lever 27, and the movable side contact is pushed upward. Contact point 23. due to bending deformation of piece 26A. '26 comrades are in contact. At this time, the safety lever 27 is connected to the switch board 17.
The opening 33 is pressed by the protrusion 40 formed on the surface of the substantially vertical portion 31 on the side of the cover 11, and the opening 33 slides upward relative to the locking tube 32 of the switch board 17. This movement &:t is performed against the pressing force of the compression spring 36.3) Figure 4 shows that the imbalance of the clothes ψ in the spin-drying/washing tub 6 is extremely severe, causing the shaking of the water tub 4. Indicates a case where the circumference is greater than a specified value (−). When the lower end 29 of the safety lever 27 is pressed by the aquarium cover 9, the safety lever 27 causes the switch board 17 to rotate counterclockwise in FIG. Do this against pressure. Accordingly, the projecting piece 34B () at the upper end of the C1 safety lever 27 slides on the upper surface of the switch lever 18 and moves in the direction h in FIG.
4Bb',) 1. ) The end tongue piece 41 provided at the j section V is removed from the 1.1 river of the button 26, so that the contact point 23.
26 Comrades leave? This causes a movement as a safety device.

Next, the state shown in FIG. 5 will be explained. The state in Figure 5 is rIS
The state shown in FIG. 4 is shown after the rib damage occurs, that is, after the safety device is activated. The contacts 23 and 26 are far apart, and
The lid 11 is in a closed state. FJ end 29 of safety lever 2Y
Since the pressing force no longer works on the safety lever 2,
7 is the pressing force of the re-compression spring 36, and the IF section 32' of the switch board 17 is rotated clockwise around the center. This 1, /) 11
111 Button/25 has already moved towards F, so
The upper tongue piece 41 of the safety lever 27 falls into the four parts 42 formed on the button 25 and fits loosely therein. The state after the rotation of the safety lever 17 as described above is shown in FIG.

Next, the operation of resetting the state shown in FIG. 5 to the normal usage state shown in FIG. 2 will be explained.

When the lid 11 is in the open state in FIG. 5, that is, in the state shown by the dotted line, the safety lever 27 slides its opening 33 in the direction F with respect to the engagement IE section 32 due to the pressing force of the compression spring 35. . Safely, the upper end tongue piece 41 of While doing so, return the button 25 downwards and reset it.

The reset state is as shown in Fig. 2. From the state shown in Fig. 2, when the lid 11 is closed, the contact 2
3.26 Comrades meet again and become drivers.

FIG. 6 shows the configuration of the safety device 14 by disassembling the entire system 11 and explaining the configuration of the safety device 14.

The switch board 17 is made of a thin steel plate in a U-shape with one side open.
The switch base 23 is positioned so that the contacts 23, 26 of 1, the button 25, etc. are arranged, and the switch board 17 is
It is attached to the walls on both sides. On the other hand, a thin plate-like cover 38 is placed over the upper opening of the switch board 17.
It is attached by penetrating and bending protrusions 39 integrally formed on the upper ends of both side walls of 70.

The function of the front pica cover 38 is that, for example, when the changeover switch 13 and the like are arranged above the rear pile section 120 and the safety device 14 as shown in Fig. 1, water droplets can enter and fall through the installation gap, etc.
The purpose of the switch 21 is to prevent water from splashing on the contact portions of the switch 21. Therefore, in view of its movement, the cup q-38 may be a simple press punched member such as a thin steel plate or a notebook made of synthetic resin material.

On the other hand, mounting pieces 44 are cut and raised on both side walls of the switch board 17, and appropriate small holes are provided in the mounting pieces 44 to form mounting holes 45. The mounting piece 44 has a mounting hole 46
The notches in both side walls of the switch board 17 created by forming the mounting pieces 44, which are identified by the mounting screws 46, are screwed onto the panel base island of the rear panel section It through the mounting screws 46, Contact 23.2 through cutout 47
6 was made visible.

As described above, the present invention has safety features (due to the presence of a lifting platform for sweat checking the operating status of the contacts in the FI switch, and a cover to prevent water droplets from entering), which cannot be seen from above. However, since the contact parts of the switch are visible through the notches formed on both side walls of the switch board, the notches can be removed at the same time as the mounting piece is formed. It is possible to provide a safety device that is easy to operate and has a simple structure.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view of a general dehydrating/washing machine, Fig. 2 is a top view of the safety device in an embodiment of the present invention, and Fig. 3 shows the operation of the safety device when the door is closed. 4 is a sectional view for explaining the operation when unbalance of clothing is detected. FIG. 6 is a sectional view showing the reset state.
The figure is an exploded perspective view of the safety device. 1...Outer frame, 4...Aquarium, 6...
・Dehydration/washing tub, 7... Drive motor, 11.
...Lid, 17...-Switch board, 18.
...Swivel, telebar, 21...Switch, 23...-Fixed contact, 24...Fixed side contact piece, 26...Movable contact, 26A...
Movable side contact piece, 27...Safety lever, 35...
... Compression spring (spring material), 38...-cover,
44...Mounting piece, °゛Name of agent Patent attorney
Toshio Nakao and 1 other person Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 7

Claims (1)

[Scope of Claims] A water tank that is supported in a hanging vibration-proof manner within an outer frame and has a dewatering/washing tub rotatably arranged inside the water tank, a lid that can open and close the upper opening of the water tank, and a lid that is linked to the opening and closing of the lid. A switch that turns off and on the power supply to the drive motor, a switch board with Konosu Note installed, and 1 on this switch board! :11 A switch lever that is movably pivoted and rotates in conjunction with opening and closing of the lid, and this switch. A safety lever that is displaced by the operation of the telebar and operates the movable side contact piece of the switch, and a spring material interposed between the switch board and the safety lever, and the switch board is arranged in a substantially U-shape with an upward opening. The switch is arranged inside the switch board, and a cover is arranged on the upper opening side of the switch board, and a panel above the outer frame is arranged on both side walls of the switch board. A safety device for a dehydrating/washing machine in which a contact point of a front switch can be visually seen through a notch formed by cutting and raising a mounting piece for fixing it to a base.