JPH0232230Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a drainage switching device for a two-tub washing machine used in general households.

Conventional structure and its problems Conventionally, in the drainage switching device of this two-tub washing machine, as shown in Fig. 1, the switch box 1
is installed on the top of the washing tub, and the lid 2 of the switch box 1 is
A hook lever 3 is rotatably mounted on the lever, and a hook string 7 is connected to a hook part 6 provided at one end of the hook lever 3. In addition, there is a knob 5 on the shaft of the knob lever 3 that protrudes from the top surface of the top mark.
is inserted, and the handle lever 3 is rotated. The other end of the string 7 is connected to a frame 9 provided on the lower surface of a tank 8 forming a washing tub and a dehydrating tub. By rotating the knob 5, the drain string 7 is pulled upward, and the drain port of the drain frame 9 provided with the valve body is opened. By rotating the knob 5 to its original position, the drain port is closed. With such a configuration, it is possible to store and drain water in the washing tub. However, with this structure, if the water is left in the drainage state (with the lid frame 9 open), the hook portion 6 will always remain pulled by the lid string 7, so the hook portion 6 and the lid 2 will be It was easy to cause problems such as deformation and change in stroke, resulting in poor drainage performance. In addition, a bearing is formed on one side of the comb lever 3, and a hook is formed on the other end, so that the comb string 7
Because of this, when turning the knob 5, the bearing part had to be pried while rotating, which increased the force required to turn the knob 5, and caused abnormal wear of the bearing part. Also Kotsukuhimo 7
It was easy to remove.

Purpose of the invention The present invention solves these conventional problems and provides a drainage switching device for a washing machine that has little change in the stroke and a small turning force of the knob.

Structure of the invention In the drainage switching device of the present invention, a switch arm that can rotate around a first boss is attached to the upper surface of the tank at the bottom of the switch box, and a second boss is provided at the outer circumferential position of the switch arm. This second boss and the valve body built into the Kotuku frame are connected by a Kotuku string, and further, the movement from the knob is transmitted to the third boss provided on the Kotuku arm, so that the movement of the knob causes the rotation of the Kotuku arm. A lever is provided to change the position, and the movement of this lever opens and closes a valve body provided on the Kotoku frame, and the first, second, and third bosses are arranged in a substantially L-shape.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In Figures 2 to 4, 11
is a switchboard (hereinafter referred to as a panel),
A bearing hole 12 is provided in the side wall surface of the panel 11.
13 is a rotating lever, and the rotating shaft portion 14 is connected to the panel 1.
1 into the bearing hole 12, and a knob 16 is attached to the shaft portion 15. Further, a U-shaped hook portion 17 is formed on the opposite side of the shaft portion 15 of the rotating lever 13. 18 is a Kotoku arm, and the 2 boards are attached to the 3rd
are connected by a boss 19 and a second boss 20, with first bosses 21 protruding from both sides of the plate.
A string 22 is connected to the second boss 20, and the other end of the string 20 is connected to a frame 24 provided on the lower surface of the tank 23. The third boss 19 is adapted to be attached to a groove 25 of a hook portion 17 formed on the rotary lever 13. The first boss 21 provided on the Kotoku arm 18 is connected to the tank 2.
3. Insert it into the groove 26 provided on the top surface of the first boss 2.
It is designed to be able to rotate approximately 90 degrees using 1 as a fulcrum.

To explain the operation in the above configuration, by rotating the knob 16 approximately 90 degrees from the washing position and moving it to the draining position as shown in FIG.
Since the rotating lever 13 rotates 90 degrees around
The hook portion 17 moves approximately 90 degrees to the right. Hook part 1
7 to the groove 25 of the third boss 19 of the cock arm 18
As a result, the cock arm 18 rotates about 90 degrees about the first boss 11. As a result, the Kotuku string 22 attached to the second boss 20 is attached to the fourth
As the position is moved upward as shown in the figure, the drain port of the pot frame 24 is opened and the water in the washing tub can be drained. With this configuration, the force is applied to the rotating lever 13 attached to the panel 11. The force is applied to the rotating lever 13 during rotation, but when the rotation is finished, the force is applied to the rotating lever 13. Since almost no force is applied to the rotary lever 13, the rotary lever 13 is not deformed. Therefore, changes in the stroke can be made small. Furthermore, by making the center length between the first boss 21 and the third boss 19 of the Kotoku arm 18 longer than the center length between the first boss 21 and the second boss 20, it is possible to easily reduce the rotational force. It is. In addition, by setting the position of connecting the cord of the frame 24 to the right of the center of the first boss 21, if the rotation dead center position is exceeded, the arm 18 will be connected to the frame 24.
Since it can be held in the draining position or the washing position by the spring force of , the plate springs used in the past can be made unnecessary.

5 to 7 show other embodiments of the present invention,
A lock knob 31, which is a type of lever for rotating the lock arm, is arranged on the bottom surface of the panel 11, and a lock knob 32 is inserted from the top surface of the panel 11 through the hole 33 into the mounting hole 34 of the lock lock 31.
It can be slid left and right. Further, a U-shaped hook portion 35 is formed at one end of the rod 31. This hook part 35 is attached to the hook arm 1.
8, the third boss 19 is inserted. In this embodiment, the pivot frame 24 can be opened and closed by sliding the knob 31 left and right in the rotary lever system of the previous embodiment. By doing this, the position of the knob 32 can be changed. It can be provided at a position farther from the position of the cock arm 18, making it easier to operate.

In the above embodiment, the knob operation is a rotating type and a sliding type, but a button type switching is also possible.In short, by using a knob arm to prevent constant force from being applied to the operating knob, it is possible to change the knob stroke. This makes it possible to measure the decrease in operating force.

Effects of the invention As is clear from the above embodiments, the drainage switching device of the present invention has a valve body provided on the Kotuku frame.
By connecting the lever and pivot arm and rotating the arm, no force is constantly applied to the pivoting lever and the pivoting block, which eliminates deformation of the pivoting lever and pivoting arm, thereby reducing changes in the pivoting stroke. can. Furthermore, by utilizing the rotary dead center of the Kotsuku arm, it is possible to provide a drainage switching device with good operability without using the conventionally used plate spring.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional drainage switching device, FIG. 2 is an exploded perspective view of a washing machine drainage switching device showing an embodiment of the present invention, FIG. 3 is a sectional view of the same drainage switching device, and FIG. The figure is a front view of the main part showing the rotating state of the Kotoku arm of the same drainage switching device, Figure 5 is an exploded perspective view of the drainage switching device showing another embodiment of the present invention, and Figure 6 is the same drainage switching device. Cross-sectional view of the main parts when the drain is closed,
FIG. 7 is a sectional view of a main part of the drainage switching device in a state where the drain port is open. 18... Kotoku Arm, 20... Second boss,
21...First boss, 22...Kotuku string, 24
...Kotuku frame.

Claims (1)

[Scope of utility model registration request] A Kotoku arm that can rotate around the first boss is attached to the upper surface of the tank at the bottom of the switch box, a second boss is provided at the outer periphery of the rotation of this Kotuku arm, and the interior is attached to the second boss and the Kotuku frame. Connect the valve bodies with a string,
Furthermore, a lever is provided that transmits the movement from the knob to the third boss provided on the Kotuku arm, changing the movement of the knob into rotation of the Kotuku arm, and the movement of this lever opens and closes the valve body provided on the Kotuku frame. A drainage switching device for a washing machine, wherein the first, second, and third bosses are arranged in a substantially L-shape.