JPH0315646Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a drain valve operating device, and particularly relates to a remote control device for operating a drain valve installed nearby outdoors from indoors.

In the Tohoku region, which has less snowfall than in the past, during the winter months, people operate water drain valves installed outside from inside their homes to prevent water pipes from freezing. The drain valve operating device used for this purpose uses a universal joint with a rotation ratio of 1:1, or changes the direction via a bevel gear and reduces the rotation ratio to about 1:2 before outputting. A typical example is one with increased torque. However, the former device uses a universal joint to change the direction of power transmission, which provides strength and has the advantage of absorbing bending of the transmission shaft, but the rotation ratio is 1:1 and the output torque is However, the loss of the device is smaller than the torque required to actually turn the handle, and the diameter of the drain valve is large, making it unusable when force is required to operate the handle. The latter has the advantage of using a bevel gear to change the rotation ratio and increase the output torque, making it possible to operate a drain valve with a large diameter. It is necessary to increase the strength of the gear because all the force from the bending of the transmission shaft acts on the gear, and the load acting on the gear is too large, making it prone to wear and tear, which poses another problem in terms of durability. I had left it behind. In view of the above problems, the present invention is an improvement on the conventional mechanical remote control device for a drain valve, and its configuration is as follows.

A power transmission system in which a transmission shaft connected to a drain valve spindle is connected to one end of a universal joint rotatably attached to a support base, and a passive shaft of a speed reduction mechanism using planetary gears is directly connected to the other end. A cover that covers the device is fitted into the support base, and a pipe is extended from the side of the support base, and two polygonal fitting fittings are provided in the pipe and protrude from the power transmission device. housing a drive shaft consisting of a shaft;
An operating handle is provided at the tip of this drive shaft. The structure and operation will be explained below according to the embodiments shown in the drawings. FIG. 1 is a diagram showing the use of the device of the present invention, in which a transmission shaft 3 is connected to a spindle 2 of a drain plug 1 protruding from underground, and the transmission shaft 3 is connected to a power transmission device 4. A handle 7 is provided at the tip of the drive shaft 5 where the drive shaft 5 and pipe 6 extend from the transmission device 4 and are located indoors. Therefore, by operating the handle 7 from indoors during cold winter, power can be transmitted and the drain valve 1 can be operated, thereby draining water and making it possible to achieve a non-freezing condition. .
FIG. 2 shows a portion of a power transmission device as an embodiment of the present invention. A universal joint 4'' is rotatably attached to a support base 40, with the transmission shaft 3 connected to the drain valve 1 fixed at one end, and the passive shaft 4'a of the reduction mechanism 4' directly connected to the other end. The driven shaft 4'a is coupled to a drive gear 4'd which is directly connected to the drive shaft 5 via a fixed internal gear 4'b and three planetary gears 4'c. The drive shaft 4'a is configured to rotate approximately 1/2 for each rotation.The drive shaft 5 is made up of a square rod 5a and a square pipe 5b that are fitted together, and the length is free. The pipe 6 is extended from the side surface 40a of the support base 40, and the two pipes 6a and 6b are fitted to increase the length. The handle 7 is attached to the tip of the drive shaft 5, and the cap 8 is attached to the tip of the pipe 6. 5
This prevents vibration. A cover 4 is attached to the support stand 40.
0' are fitted together to prevent rain, dust, etc. from entering the power transmission device 4. With the above configuration, when the handle 7 is turned, the passive shaft 4'a rotates with amplified torque via the planetary gear 4'c.
The universal joint 4'' receives the torque at that time, changes the direction, and can finally transmit the transmission shaft 3 to the spindle 2.

According to the present invention, the load due to bending or deflection of the transmission shaft 3 is absorbed by the universal joint 4'', and by using the planetary gear 4'c, a small reduction mechanism with a simple structure can be constructed, and the torque can be increased. This has the effect of almost achieving the purpose of being able to operate large-diameter water drain valves that are difficult to handle.In short, the present invention directly connects the passive shaft of a reduction mechanism that uses a universal joint and a planetary gear to reduce loss. The main idea is to make the drive shaft small, and at the same time, it should consist of at least two shafts that fit together in a polygon so that the length of the drive shaft can be adjusted according to the wall thickness, and the drive shaft can be freely adjusted within that range. It is possible to freely change the number of joints, the number and shape of gears, and the shape of the drive shaft.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the state of use of the present invention, and FIG. 2 is a sectional view of the main part of the present invention. 1... Water drain plug, 2... Spindle, 3... Transmission shaft, 4... Power transmission device, 4'... Speed reduction mechanism,
4'a... Passive shaft, 4'b... Internal gear, 4'c...
Planetary gear, 4'd...drive gear, 4''...universal joint, 40...support stand, 40a...side surface of support stand,
40'...Cover, 5...Drive shaft, 6...Pipe,
7...Handle.

Claims (1)

[Scope of utility model registration request] Power generated by connecting a transmission shaft connected to the spindle of a water drain valve to one end of a universal joint rotatably attached to a support base, and directly connecting the passive shaft of a speed reduction mechanism with a planetary gear interposed to the other end. A cover covering the transmission device is fitted into the support base, and a pipe is provided extending from the side of the support base, and the pipes are provided inside the pipe to protrude from the power transmission device and are polygonally fitted to each other. An operating device for a drain faucet, which houses a drive shaft consisting of two shafts that enables length adjustment and transmission of rotational force, and a handle is provided at the tip of the drive shaft.