JPH0236464Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a drain valve operating device for a washing machine that is improved in order to reduce the operating force of an operating member.

[Technical background of the invention]

Conventionally, in washing machines, a circular operation member with an integrally extending arm is rotatably provided on the operation panel of the operation box, and an operation transmission member is connected between the end of the arm and the drain valve. They are connected by a barrel string, and the arm portion is rotated based on the clockwise or counterclockwise rotation of the operating member to open and close the drain valve via the string.

[Problems with background technology]

However, in the case of the above-mentioned conventional device, since the arm portion is configured to extend long from the operating member, a large amount of rotational operating force is required for the operating member, resulting in poor operability.

[Purpose of invention]

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide a drain valve operating device for a washing machine that can reduce the operating force of the operating member and improve operability.

[Summary of the idea]

In order to achieve the above object, the present invention includes a first lever whose one end is rotatably supported in an operation box, and a first lever which is engaged with the other end of the first lever.
an operating member for rotationally operating a lever; an intermediate portion is rotatably supported in the operation box, one end is engaged with an intermediate portion of the first lever, and the other end is connected via an operation transmission member; a second lever connected to the drain valve, and the drain valve is opened and closed by rotationally displacing the second lever via the first lever based on the operation of the operating member. It is characterized by the fact that

[Example of idea]

An embodiment of the present invention will be described below with reference to the drawings. First, in Figure 1, 1 is the outer box,
A washing tub 2 is provided inside, and a pulsator is disposed at the bottom of the washing tub 2. Reference numeral 4 denotes an operation box disposed on the outer box 1, and below this an overflow chamber 5 which also serves as a drainage chamber is formed by protruding from the washing tub 2. 6 is a drain hole formed at the bottom of the overflow chamber 5;
A drain hose 7 is connected to this outside the overflow chamber 5. Reference numeral 8 designates a drain valve, and reference numeral 9 designates a support body with the drain valve 8 attached to its lower end, which is movable up and down within the overflow chamber 5, and above the drain valve attachment portion is the drain port 6.
The overflow pipe 10 is connected by communicating with the overflow pipe 10. 11 is a compression coil spring interposed between the outer bottom of the operation box 4 and the upper end of the support 9;
The drain valve 8 is brought into pressure contact with the surrounding area of the drain port 6 through the drain port 6, so that the drain valve 8 is always urged in a direction to close the drain port 6. On the other hand, as shown in detail in FIG. 2, the operation box 4 has an operation panel 13 mounted on a base 12.
The bottom wall of the base 12 is formed with a support portion 14 projecting inward.
Further, the operation panel 13 is formed with a through groove 15 extending in the left and right lateral directions. Reference numeral 16 denotes a first lever provided in the operation box 4 with its lower end rotatably supported by a support shaft 17 projecting rearward from the lower part of the support portion 14, and an engagement hole 18 is provided in the middle of the lever. is forming. Reference numeral 19 denotes a retaining pin inserted into the tip of the support shaft 17, which connects the first lever 16 via the washer 20.
It prevents it from coming out. Reference numeral 21 denotes a guide plate attached to the back side of the operation panel 13 with a pin screw 22. Reference numeral 23 denotes an operating member, which includes a slider 24 that is slidably fitted onto the guide plate 21, and a protrusion 24a that passes through the dustproof body 25 and the through groove 15 on the slider 24. The operator 26 attached to the tip of the
It is provided so as to be slidable along the through groove 15 with respect to the operation panel 13 of the operation box 4. The slider 24 of this operating member 23 has an engaging hole 2.
7, and the upper end of the first lever 16 is inserted into and engaged with this engagement hole 27, so that by sliding the operating member 23, the first lever 16
It is designed so that it can be rotated. Reference numeral 28 denotes a second lever, which has an inverted dogleg shape bent at an angle θ at an intermediate portion 28a as shown in FIG.
a is rotatably supported on the upper part of the support part 14 and provided in the operation box 4. And the second
The tip of the one end 28b of the lever 28 is connected to the first
is inserted into and engaged with the engagement hole 18 of the lever 16, and
A string 29 serving as an operation transmission member is connected to the other end 28c, and the lower end of the string 29 is connected to the hook portion 30 at the upper end of the support 9. In this case, the length from the intermediate portion 28a to one end 28b of the second lever 28 is _l1 , and the length from the intermediate portion 28a to the other end 28c is _l2 ,
Also, the length L 1 from one end 28b to the other end 28c of this second lever 28 is the length _L1 of the first lever 1.
It is set smaller than the length dimension L ₂ from the pivoted part of No. 6 to the upper end. In FIG. 1, numerals 31 and 32 are an upper strainer and a lower strainer that close the opening of the overflow chamber 5 facing into the washing tub 2.

Next, the operation of the above configuration will be explained. Now, drain port 6
When the drain valve 8 is closed, the first and second levers 16 and 28 are in the state shown in FIG. From this state, hold the operator 26 of the operating member 23 and move it along with the slider 24 to the through groove 15.
When the state shown in FIG. 4 is brought to the state shown in FIG. 5 by sliding in the direction of arrow A in FIG. The first lever 16 is rotated in the direction of arrow B, and the second lever 28 is rotated in the direction of arrow B around the intermediate portion 28a. This rotation of the second lever 28 pulls up the support body 9 and, by extension, the drain valve 8 via the string 29 against the biasing force of the compression coil spring 11, thereby opening the drain port 6. In this case, as the operating force F for operating the operating member 23, if f is the force for opening the drain valve 8 including the biasing force of the compression coil spring 11 at the upper end of the support 9, then F≒
It is expressed as f×l ₂ /l ₁ ×L ₁ /L ₂ . Therefore, in this case, since the length L ₁ of the second lever 28 is set smaller than the length L ₂ of the first lever 16, the operating force F can be reduced. In order to change the drain port 6 from the open state to the closed state by the drain valve 8, the operating member 23 is moved as indicated by the arrow A.
This can be done by performing a sliding operation in the opposite direction.

Here, in the state shown in FIG. 4, the second lever 28
The tensile force (represented by vector f') from the load side applied to the other end portion 28c is at the neutral position on the intermediate portion 28a, which is the center of rotation of the second lever 28, and therefore the state shown in FIG. When the first lever 16 is rotated in the direction of arrow B, the above-mentioned tensile force exceeds the neutral position upwardly, so that the state shown in FIG. 5 is reached without applying the operating force F due to the so-called toggle action. This state is maintained.

As described above, according to this embodiment, the drain valve 8 is opened and closed by rotating and displacing the second lever 28 via the first lever 16 based on the operation of the operating member 23. The operating force of the member 23 can be reduced and the operability can be improved. Further, especially according to this embodiment, the operating member 23 is provided slidably with respect to the operating panel 13 of the operating box 4, and the operating member 2
Since the drain valve 8 is opened and closed by the reciprocating operation in step 3, when rotating the circular operating member, it is necessary to increase the outer diameter of the operating member in order to reduce the operating force. However, in this embodiment, the operating force is constant and small regardless of the size of the operating member, and therefore the operating member 23 can be made smaller, and as a result, the operating panel 13 and the operating box 4 can be made smaller.
The design of the operation panel 13 can be improved because the area occupied by the operation member 28 on the operation panel 13 can be reduced.

It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, and may be implemented by appropriately changing the shapes of the first and second levers 16 and 23, etc., without departing from the scope of the invention. It is possible.

[Effect of idea]

As is clear from the above description, the present invention includes a first lever whose one end is rotatably supported in an operation box, and a first lever which is engaged with the other end of the first lever. an operating member for rotationally operating the first lever; an operating member rotatably supported in the middle part in the operating box, one end part of which is engaged with the middle part of the first lever, and the other end part of which is connected to the drain valve via an operation transmission member; and a second lever connected to each other, and the drain valve is opened and closed by rotationally displacing the second lever via the first lever based on the operation of the operating member. This feature provides an excellent practical effect in that the operating force of the operating member can be reduced and the operability can be improved.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a partial vertical sectional view of a washing machine, FIG. 2 is an enlarged vertical sectional view of the operation box, FIG. 3 is a schematic side view of the main parts, and FIG. 5 and 5 are views corresponding to FIG. 3, respectively, shown in different states for explaining the operation. In the drawing, 4 is an operation box, 8 is a drain valve, 13 is an operation panel, 16 is a first lever, 23 is an operation member,
28 is a second lever, 29 is a string (operation transmission member)
shows.

Claims (1)

[Claims for Utility Model Registration] 1. A first lever whose one end is rotatably supported in an operation box, and a lever which is engaged with the other end of the first lever to rotate the first lever. An operating member to be operated, an intermediate portion rotatably supported within the operating box, one end engaged with an intermediate portion of the first lever, and the other end connected to a drain valve via an operation transmission member. and a second lever, and the drain valve is opened and closed by rotationally displacing the second lever via the first lever based on the operation of the operating member. Drain valve operating device for washing machines. 2. According to claim 1 of the utility model registration claim, the operating member is slidably provided on the operating panel of the operating box, and the drain valve is opened and closed by reciprocating operation of the operating member. Drain valve operating device for the washing machine described.