JPH0759984A - Lid switch device for washing machine - Google Patents

Abstract

PURPOSE:To enable a switch main body to be operated so as to be opened if there exists even a slight release of a lid, thereby make it possible to keep the lid safe in operation, and furthermore enable the lid to surely function. CONSTITUTION:A transmission lever 35 is bent at the halfway section in one side 37 so as to allow a bent section 42 to be brought in contact with a passive section 33 wherein the transmission lever is pivotally supported rotatably between the passive section 33 projected out of the closing center section 32 of a lid 30 and a switch main body 34 which is disposed while being faced to the passive section. Let the other side 38 be then brought into contact with the actuating button 45 of the switch main body 34, and the rotation of the transmission lever 35 while a contact point with the passive section 33 is being changed from the bent section 42 at one side 37 to a tip end section 43 when the lid 30 is released, is so designed as to allow the operating stroke of the actuating button 45 of the switch main body 34 by the other side 38 to be altered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine lid switch device which responds to opening and closing of a washing machine lid.

[0002]

2. Description of the Related Art Conventionally, in a washing machine, when a lid is opened during a dehydration operation, a lid switch responds to the opening and the motor is de-energized and a brake device is operated to operate the dehydration tank. It is provided that the rotation is quickly stopped so that there is no risk of touching the dehydration tank during high speed rotation.

In the case of this, specifically, as shown in FIG. 10, a drive portion 4 is provided so as to project rearward (right side in the drawing) from an opening / closing center portion 3 pivotally supported by a shaft 2 of a lid 1. A switch main body 5 is arranged further to the rear of the transfer unit 4 so as to face it. Further, a transmission lever 6 is rotatably supported by a shaft 7 between the switch body 5 and the transmission portion 4, and one end 8 of the transmission lever 6 is provided with a tip portion 8a. The tip portion 9a of the other side 9 of the moving portion 4 is in contact with the operation button 10 of the switch body 5 from above. Further, a counterclockwise turning force is applied to the transmission lever 6 by the spring 11.

With such a structure, when the lid 1 is closed, the transmission lever 6 is provided with the spring 11 on the one side 8 by the activating portion 4.
Is pushed up against the spring force of the switch body 5 and the operating button 10 of the switch body 5 is pushed down by the other side 9, so that the movable contact 12 is pressed against the fixed contact 13 in the switch body 5 to assume a closed state. Has become.

When the lid 1 is opened from this state, the transmission lever 6 is rotated counterclockwise by the spring force of the spring 11 so that the one side 8 follows the transmitting portion 4 and the other side 9 is rotated.
The depression of the operation button 10 of the switch body 5 due to is released. Therefore, in the switch body 5, the movable contact 12 separates from the fixed contact 13 and changes to the open state.

[0006]

In the case of the above, if the lid 1 is lifted at the front end (not shown) by, for example, 60 to 100 [mm] or more to open it, the switch body 5 operates to open, but a slight amount less than that. When the switch body is opened, the switch body 5 does not operate to open and the rotation of the dehydration tank cannot be stopped.

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to open the lid of the switch body even if the lid is slightly opened, so that the lid switch of the washing machine can be strictly safe. To provide the equipment.

[0008]

In order to achieve the above object, in a lid switch device for a washing machine according to the present invention, an intermediate portion on one side of a transmission lever is bent and the bent portion is used as a activating portion of the lid. When the lid is opened, the transmission lever is rotated by changing the contact point with the actuating part from the bent part on the one side to the tip part, thereby changing the operation stroke of the switch body by the other side. The feature is that it is made to do.

In this case, the distance from the opening / closing center of the lid to the bent portion on one side of the transmission lever, the distance from the bent portion on one side of the transmission lever to the rotation center portion, and the rotation center portion of the transmission lever. It is recommended that the distance from to the contact portion with the switch body on the other side be approximately equal.

Further, it is preferable that the bent portion on one side of the transmission lever is bent in an arc shape having a larger diameter toward the tip end side.

[0011]

According to the above means, the operation stroke of the switch main body by the other side of the transmission lever when the lid is opened is large while the transmission lever is in contact with the bending portion (halfway portion) on one side with the transmission portion. , It becomes smaller when the tips come into contact. Therefore, the operation stroke can be increased, so that the switch main body can be quickly opened, that is, the switch main body can be opened by a slight opening of the lid.

Further, in that case, the distance from the opening / closing center of the lid to the bent portion on one side of the transmission lever, the distance from the bent portion on one side of the transmission lever to the center of rotation, and the rotation of the transmission lever. If the distance from the central portion to the contact portion with the switch body on the other side is set to be almost equal, the operation stroke of the switch body can be easily set.

In addition, in the case where the bent portion on one side of the transmission lever is bent in an arc shape having a larger diameter toward the tip end side, the operation stroke of the switch body can be gradually changed from a large portion to a small portion. The user's operation feeling can be improved.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. First of all, FIG. 2 shows an outer box 21 of the entire washing machine, in which a tub 22 for storing a water is provided. A dewatering tub 23 also serving as a washing tub is arranged in the tub 22, and a stirring member 24 for washing is arranged in the dewatering tub 23. Further, a drive mechanism 26 mainly composed of a motor 25 is disposed on the outer lower portion of the tub 22, and the drive mechanism 26 stops the dehydration tub 23 during washing to rotate the agitator 24, and during dehydration. The dehydration tank 23 is rotated together with the stirring body 24. In addition, there is a tub 2 on the lower outside of the tub 22
Drain valve 27 and drain hose 28 for draining from inside 2
Etc. are also arranged.

On the other hand, a top cover 29 is mounted on the outer box 1, and a lid 30 is pivotably mounted on the top cover 29 by a shaft 31 at the rear end so as to be opened and closed. As shown in FIG. 3, the lid 30 is provided with a drive portion 33 projecting rearward from the opening / closing center portion 32 around the shaft 31. The drive portion 33 faces the drive portion 33 and further rearward thereof. Is provided with a switch body 34, and a transmission lever 35 is rotatably supported by a shaft 36 between the switch body 34 and the transfer portion 33.

Here, the transmission lever 35 integrally has one side 37 out of one side (front side) 37 and the other side (rear side) 38 which are located with the shaft 36 as a boundary, while the other side 3
8 is a separate lever 39, and the lever 39 is pulled by a spring 40 to be integrated. The lower end of the lever 39 is located on the circumferential side of the tub 22,
When the dehydration tub 23 causes abnormal vibration during dehydration, it is pushed by the tub 22 that also abnormally vibrates, and rotates around the fulcrum 41 against the spring force of the spring 40 to open the switch body 34. It is like this.

On the other hand, one side 3 of the transmission lever 35
7 is bent in a V shape, the bent portion 42 is brought into contact with the transfer portion 33 from above, and the tip portion 43 is separated from the transfer portion 33. Further, the other side 38 has a tip portion 44.
Is brought into contact with the operation button 45 of the switch body 34 from above. The switch body 34 has a movable contact 46 inside.
And a fixed contact 47, and the movable contact 46 is used as the operation button 4
It is raised and lowered by 5 to be brought into contact with and separated from the fixed contact 47.

Further, in this case, as shown in FIG.
0 from the opening / closing center 32 to the bent portion 42 of the one side 37 of the transmission lever 35, the distance r2 from the bent portion 42 of the one side 37 of the transmission lever 35 to the center of rotation of the shaft 36, and the transmission. The distance r3 from the center of rotation of the lever 35 to the contact portion of the switch body 34 on the other side 38 with the operation button 45 is set to be substantially equal. In addition, a counterclockwise turning force is applied to the transmission lever 35 by a spring 48.

Next, the operation of the above structure will be described. First, in the state in which the lid 30 is closed, the transmission lever 35 pushes up the one side 37 against the spring force of the spring 48 by the transfer portion 33 and the other side 38, as shown in FIG. The operation button 10 is pushed down, so that the movable contact 46 is brought into pressure contact with the fixed contact 47 in the switch main body 34 to assume a closed state.

When the lid 30 is opened from this state, the transmission lever 35 is rotated counterclockwise by the spring force of the spring 48, causing the one side 37 to follow the transfer portion 33. At this time, the one side 37 of the transmission lever 35 follows the bending portion 42 by contacting the transfer portion 33 with the bending portion 42 halfway as shown in FIG. 1, and thereafter, as shown in FIG.
To contact the activating section 33 and follow. Therefore, as compared with the distance from the tip end portion 43 of the transmission lever 35 to the shaft 36, the bending portion 42 of the transmission lever 35 to the shaft 3 is compared.
The distance to 6 is smaller, and therefore the transmission lever 3
In No. 5, the power point side called "lever" is moved a short distance in the middle and then moved a long distance. Therefore, as shown in FIG. 5, the other side 38 of the transmission lever 35 (the force point side referred to as the “lever”) is turned to a large stroke halfway, and then turned to a small stroke, depending on the lever ratio. Since the stroke from the middle is the same as the conventional one, the stroke is rotated with a larger stroke than the conventional one up to the middle, whereby the operation button 10 of the switch body 34 by the tip portion 44 is rotated. The pressing of the movable contact 46 is released earlier than before, and the movable contact 46 is separated from the fixed contact 47 in the switch body 34, that is, the opening operation is accelerated. Thus, with this structure, the switch main body 34 is opened by a slight opening of the lid 30, and it is possible to perform the safety sufficiently strictly.

In addition, not only the bent portion (intermediate portion) 42 of the transmission lever 35 follows the activating portion 33 of the lid 30 as described above, but also the tip end portion 43 of the lid 30 causes the activating portion of the lid 30 from the middle. Since it follows 33, there is no disengagement of the transmission lever 35 from the drive section 33, and it is possible to function reliably.

At this time, as shown in FIG. 6, when the opening size of the lid 30 is A, the thickness of the lid 30 is t, and the total length of the lid 30 is L, the stroke of the tip end portion 44 of the other side 38 of the transmission lever 35. D (rotation direction) is

[Equation 1] And in this case,

[Equation 2] Therefore,

[Equation 3] Becomes

In addition,

[Equation 4] Therefore, when the opening angle of the lid 30 is B, the transmission lever 3
The rotation angle α of the one side 37 and the rotation angle β of the other side 38 of the switch 5 are the same, and the operation button 1 of the switch body 34
When the angle from the horizontal position to the ascending point of 0 is θ, the stroke H (vertical direction) of the operation button 10 is

[Equation 5] That is, it can be easily obtained by knowing the angle θ.

In contrast to the above, FIGS. 7 to 9 show different embodiments of the present invention, in which one side 3 of the transmission lever 35 is provided.
7 shows that the bent portion 49 of No. 7 is bent in an arc shape having a larger diameter toward the tip portion 503 side, and by doing so, a change from a large operation stroke to the switch main body 34 to a small operation stroke is performed. Gradually,
It is possible to improve the operational feeling of the user.

Incidentally, in this case, the tip portion 43 of the one side 37 of the transmission lever 35 is finally (see FIG. 9) so that the edge portion of the tip portion 43 does not contact the drive portion 33 of the lid 30.
The rotation amount is regulated by 1.

[0026]

The washing machine lid switch device of the present invention is as described above, and has the following effects. First
In addition, in the case of responding to the opening and closing of the lid of the washing machine, it is possible to rotate between the actuating portion projecting from the opening and closing center of the lid and the switch main body arranged opposite to the actuating portion. The middle part of one side of the transmission lever pivotally supported on the above is bent to bring the bent part into contact with the transfer part, and the other side is brought into contact with the switch main body, and when the cover is opened, By changing the contact point with the transfer part from the bent part on one side to the tip part and rotating it, the operation stroke of the switch body by the other side is changed, so that the switch body can be opened even if the lid is slightly opened. It can be operated to open, and it can be rigorously and sufficiently safe. Moreover, there is no disengagement of the transmission lever from the drive part of the lid, and it can function reliably for a long time.

Second, the distance from the opening / closing center of the lid to the bent portion on one side of the transmission lever, the distance from the bent portion on one side of the transmission lever to the center of rotation, and the rotation of the transmission lever. By setting the distance from the central portion to the contact portion with the switch body on the other side to be approximately equal, it is possible to easily set the operation stroke for the switch body.

Thirdly, since the bending portion on one side of the transmission lever is bent in an arc shape having a larger diameter toward the tip end side, the change of the operation stroke of the switch body from a large portion to a small portion is gradually made. Therefore, the operation feeling of the user can be improved.

[Brief description of drawings]

FIG. 1 is a side view of a main part showing an embodiment of the present invention.

[Fig. 2] Side view of the washing machine as a whole

FIG. 3 is a side view of the main portion with the lid closed.

FIG. 4 is a side view of the same portion with the lid open.

FIG. 5 is a diagram showing the relationship between the opening angle of the lid and the operation stroke of the switch body.

FIG. 6 is a side view of the top cover portion with the lid slightly opened.

FIG. 7 is a view corresponding to FIG. 3 showing a different embodiment of the present invention.

FIG. 8 is a view equivalent to FIG.

FIG. 9 is a view corresponding to FIG.

FIG. 10 is a view corresponding to FIG. 1 showing a conventional example.

[Explanation of symbols]

23 is a dewatering tank, 30 is a lid, 32 is an opening / closing center, 33 is an activating section, 34 is a switch body, 35 is a transmission lever, 36 is a shaft (rotation center), 37 is one side, 38 is the other side. , 42
Is a bent portion, 43 is a front end portion, 45 is an operation button, r1 is a distance from the opening / closing center portion of the lid to the bent portion on one side of the transmission lever,
Reference numeral r2 represents a distance from a bent portion on one side of the transmission lever to a rotation center portion, r3 represents a distance from a rotation center portion of the transmission lever to a contact portion with the switch body on the other side, and 49 indicates a bending portion.

Claims (3)

[Claims] 1. A washing machine that responds to opening and closing of a lid, wherein a activating section protruding from an opening / closing center of the lid, a switch main body arranged to face the activating section, and this switch. A transmission lever pivotally supported between the main body and the transmission portion, and a middle portion on one side is bent, and the bending portion is brought into contact with the transmission portion and the other side is brought into contact with the switch body. And changing the operation stroke of the switch body by the other side by rotating the transmission lever by changing the contact point of the transmission lever from the bent portion on one side to the tip portion when the lid is opened. A lid switch device for a washing machine. 2. The distance from the opening / closing center of the lid to the bent portion on one side of the transmission lever, the distance from the bent portion on one side of the transmission lever to the rotation center portion, and the rotation center portion of the transmission lever. 2. The lid switch device for a washing machine according to claim 1, wherein the distance to the contact portion with the switch body on the other side is set to be substantially equal. 3. The lid switch device for a washing machine according to claim 1, wherein a bent portion on one side of the transmission lever is bent in an arc shape having a diameter increasing toward a tip end side.