JPH0133024Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an overflow water level switching device for a washing machine that changes the overflow water level by expanding and contracting an overflow pipe from an operation panel section.

[Technical background of the invention]

Conventionally, in a washing machine, for example, a two-tub washing machine, as shown in FIG. One end of a connecting rod 4 is connected to the operating member 3, and the other end of the connecting rod 4 is connected to a wire 5.
By connecting to the overflow pipe 6 which is vertically expandable and retractable provided in the lower washing tank overflow chamber via etc., the overflow pipe 6 is expanded and contracted through the connecting rod 4 and the wire 5 etc. by operation of the operating member 3, A device is provided that allows the overflow water level to be changed by using this function.

[Problems with the Background Art] However, in the above conventional device, when the operating member 3 is operated, the other end of the connecting rod 4 does not move up and down in a straight line, but draws an arcuate trajectory A. Due to the extra movement caused by the bulge, the other end of the connecting rod 4 moves up and down by an amount Ls that is smaller than the operating amount Lo of the operating member 3, and therefore the overflow pipe 6 is expanded and contracted. The amount was also small, causing the problem that a sufficient switching width of the overflow water level could not be obtained.

[Purpose of invention]

The present invention has been made to solve the above-mentioned problems, and therefore, its purpose is to provide a washing machine overflow water level switching device that can provide a sufficient overflow water level switching width.

[Summary of the idea]

The present invention provides a connecting rod with a protrusion and a guide rib that slides into contact with the protrusion and guides the connecting portion of the connecting rod on the overflow pipe side vertically in a straight line. It is characterized in that the overflow pipe side connection part of the connecting rod can be moved vertically in a straight line.

[Example of idea]

An embodiment of the present invention will be explained below with reference to FIGS. 2 to 6. First, in FIG.
Reference numeral 1 designates an outer case of a washing machine, for example, a two-tub type washing machine, and an operation panel 13 is provided above this through an operation box base 12 in an obliquely upwardly facing manner. 14
is an operation guide groove provided on the operation panel 13 at the top and bottom and extending back and forth, and a knob-like operation member 15 is slidably provided here, so that the operation member 15
is provided on the operation panel 13 so as to be movable up and down along its diagonal surface. Reference numeral 16 denotes a connecting rod having one end connected to the lower end of the operating member 15;
7 is a wire whose one end is connected to the other end of the connecting rod 16, and the other end of this wire 17 is connected to a bellows pipe, for example, which is vertically extendable and retractable, provided in the overflow chamber of the washing tub (not shown) below. It is connected to the overflow pipe 18 through a connecting ring 19. Here, the connecting rod 16 is constructed as shown in FIG. 3 in detail, that is, a hooking portion 20 for the wire 17 is provided at the other end, which is the overflow pipe side connecting portion, and one side ( A protrusion 21 protruding like a pin on the left side in the figure
A rib-shaped protrusion 22 is provided on the upper surface of the connecting rod 16 so that only the other end side of the connecting rod 16 has a gradually descending slope and extends substantially over the entire length of the connecting rod 16. In contrast, a hole 23 through which the connecting rod 16 passes is formed in the bottom of the operation base 12 where the other end of the connecting rod 16 is located close to, and as shown in FIGS. 4 and 5. As shown in FIG. 5, there are guide ribs 24 and 25 that extend straight upward and downward from the hole 23 and face each other in a manner that only the lower ends are separated from each other. ) and is formed with a guide rib 26 that projects downward from the front edge of the hole 23 to the same position as the lower end of the guide rib 24, and when the operating member 15 is in the uppermost position as shown in FIG. The connecting rod 16 is located approximately at the top between the guide ribs 24 and 25.
The protrusion 21 is inserted and positioned.

Now, in the case of this embodiment configured as above,
When the operating member 15 at the uppermost position is held and operated to lower it, the connecting rod 16 causes the protrusion 21 to slide into contact with the guide rib 24 as shown by the solid line in FIG. The other end of the guide rib 24 descends while being guided in a straight line, and then the protrusion 21 comes into sliding contact with the lower end of the guide rib 24. 22 is brought into sliding contact with the guide rib 26, whereby the other end portion descends while being guided linearly. When the other end of the connecting rod 16 descends in this manner, the overflow pipe 18 is contracted via the wire 17, and the overflow pipe 1, which is the overflow port, is thereby contracted.
Since the upper end opening of 8 is lowered, the overflow water level of the washing tub (not shown) is continuously switched from the "high" position to the "medium" position, and from the "middle" position to the "low" position. On the other hand, when the operating member 15 that has reached the lowest position is lifted and operated upward, the protrusion 22 first comes into sliding contact with the guide rib 26, contrary to the above.
Next, the protrusion 21 slides on the guide rib 25 and the other end of the connecting rod 16 is linearly guided and raised, so that the overflow pipe 18 is also extended and its upper end opening, which is the overflow port, is raised, and thus The water level in the washing tub is also continuously switched from the "low" position to the "medium" position and from the "medium" position to the "high" position.

As described above, according to this embodiment, the connecting rod 16 is connected to the overflow pipe side by slidingly contacting the protrusion 21 with the guide ribs 24 and 25 and the protrusion 22 with the guide rib 26 as the operating member 15 moves up and down. The other end is guided in a straight line up and down, and does not bulge in an arc like the conventional one.
Therefore, the operating member 15 moves up and down by an amount Lo' that is substantially the same as that of the operating amount Lo, thereby allowing the overflow pipe 18 to expand and contract to a greater extent than before, and the switching width of the overflow water level to be sufficiently increased.

Note that the configuration may be changed to a configuration in which only one set of the protrusion 21 and the guide ribs 24 and 25 and the protrusion 22 and the guide rib 26 are provided.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, but may be implemented with appropriate modifications within the scope of the gist.

[Effect of idea]

As is clear from the above, the present invention provides an overflow system that can be expanded and contracted up and down by operating an operating member that is provided on the operating panel section so as to be able to move up and down. In the overflow water level switching device for a washing machine, which changes the overflow water level by expanding and contracting a pipe, the connecting rod is provided with a protrusion, and the protrusion is brought into sliding contact with the overflow water level of the connecting rod. This device is characterized by the provision of a guide rib that guides the pipe-side connecting portion vertically and linearly, and the overflow pipe can be expanded and contracted by an amount that is approximately the same as the amount of operation of the operating member, so that the overflow water level can be adjusted. This provides an excellent effect in that a sufficient switching width can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view of the main part showing a conventional structure, and FIGS. 2 to 6 show an embodiment of the present invention, FIG. 2 is a longitudinal sectional side view of the main part, and FIG. FIG. 4 is a vertical cross-sectional side view of the guide rib portion; FIG. 5 is a cross-sectional view of the guide rib portion taken along line - in FIG. 4; FIG. 6 is a protrusion of the connecting rod for explaining the action. and FIG. 6 is a longitudinal cross-sectional side view of a guide rib portion. In the figure, 13 is an operation panel, 15 is an operation member, 1
6 is a continuous rod, 18 is an overflow pipe, 21 and 22 are protrusions, and 24, 25, and 26 are guide ribs, respectively.

Claims (1)

[Scope of utility model registration request] By operating an operating member provided on the operating panel so that it can be moved up and down, an overflow pipe that can be extended and contracted up and down is expanded and contracted via a link whose one end is connected to the operating member, thereby changing the overflow water level. , wherein the connecting rod is provided with a protrusion, and
An overflow water level switching device for a washing machine, characterized in that a guide rib is provided which guides the overflow pipe side connecting portion of the connecting rod vertically and linearly by slidingly contacting the protrusion.