JPH0510053Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a lever handle device for a drain valve. More specifically, the present invention relates to a lever handle device for operating a valve piece of a drain valve for discharging water in a branch pipe and holding it in a predetermined position by vertically moving a valve piece housed in a jacket pipe.

Conventional technology A typical type of water drain valve is the anti-freeze drain valve used in cold regions.When water is not used for a long time, the water in the branch pipe is drained to prevent freezing. It's summery. Among these, there is a type in which a valve piece is installed in the outer pipe of the drain valve so as to be able to slide up and down, and the valve piece is moved by an operating device attached to the upper part of the outer pipe. Many such operating devices have been proposed in the past, but some have complicated structures and are expensive, while others lack stability in operation.

Issues to be Solved by New Ideas By the way, antifreeze drain valves are operated almost every day during the cold season.
It is essential that the device be easy to operate and have stability.

This invention was made in view of the above points,
It is an object of the present invention to provide a lever handle device for a drain plug that is easy to operate, has stability, has a simple structure, and can be manufactured at low cost.

Means for solving the problem In order to achieve the above purpose, in this invention,
The valve piece is attached to the upper part of the outer pipe of the drain valve, and is housed in the outer pipe.
A lever handle device for a water drain valve, which is operated between a position of a lever that is rotatable in a plane extending in the mantle; a connecting member that is movable in the axial direction of the mantle tube and is adapted to be connected to a valve piece in the mantle pipe; a connecting rod whose other end is rotatably connected to the upper end of the connecting member at a position eccentric from the first axis via the axis of the connecting rod; a fixed spring hanging member provided on the frame; a spring that is disposed between the shaft of the valve member and the spring hanging member and applies a force to the second shaft in a direction that moves the second shaft away from the spring hanging member; the lever comprises first and second stopper members that abut the levers at corresponding first and second rotational positions, respectively, to prevent the levers from rotating beyond the first and second rotational positions; When the second axis rotates between the first and second rotational positions, the motion trajectory of the second axis is the first
The straight line connecting the axis of the spring and the spring hanging member intersects with each other.

Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 is a front view of a lever handle device 1 for a drain valve according to an embodiment of the present invention, and the lever handle device 1 has a frame 2 consisting of a pair of frame bodies 3 and 4 having a substantially symmetrical shape. ing. The lever handle device 1 is then attached to the upper part of the mantle tube using a cap nut 20.

Figures 2 and 3 are side views seen from the right side of Figure 1 with the frame body 4 removed, and the valve pieces (not shown) in the outer pipe of the drain valve are at the upper and lower limit positions, respectively. It corresponds to the state in which it is located.

A shaft 5 is implanted in the frame body 3, and a lever 6 is rotatably mounted around the shaft 5. The lever 6 is provided with a knob portion 7 extending outside the frame 2 at its tip. As shown in FIG. 6, the lever 6 is generally connected to a disc part 9 having a hole 10 into which the shaft 5 is fitted, and an arm part 11 extending from the disc part 9. A radially long elongated hole 12 is formed in the disc portion 8, which will be described later. Reference numeral 13 denotes a joint as a connecting member that is connected to the upper end of a spindle (not shown) that is connected to the upper part of the valve piece and moves up and down together with the valve piece. Reference numeral 14 denotes a connecting rod connected between the lever 6 and the joint 13, and one end of which connects the lever 6 through a pin 15 extending rotatably and slidably across the elongated hole 12 of the lever 6. The other end is connected to the upper part of the joint 13 via a pin 16. It is also possible to connect the connecting rod 14 to the upper part of the spindle by using the spindle itself as a connecting member. Reference numeral 17 is also a spring hook pin implanted in the frame body 3, and a spring 18 is hooked between the spring hook pin 17 and the pin 15, and this spring 18 is placed far from the spring hook pin 17 with respect to the pin 15. I am constantly applying force to make it go away. The protruding tips of the shaft 5 and the spring hook pin 17 are adapted to be received in corresponding holes formed in the frame body 4, respectively.

FIG. 4 is a partial plan view of the frame body 3, and FIG. 5 is a sectional view taken along the line -- in FIG.

The frame body 3 is formed at its center with a boss 19 into which the shaft 5 is insert molded, and this boss 19 is formed with a groove 21 extending in the circumferential direction over a certain angular range. The frame body 4 is also formed almost symmetrically with the frame body 3, and the boss 1
A hole (not shown) for receiving one end of the shaft 5 and a groove 21' (not shown) having the same shape as the groove 21 are formed in the lever 5' (not shown). When the lever 5 is rotated, both ends of the pin 15 move while being guided in the groove 21 and the groove 21', respectively.

Figure 2 corresponds to when the valve piece is at the upper limit position,
The pin 15 is urged by a spring 18 and comes into contact with the upper end 22 of the groove 21, and also with the outer end 12a of the elongated hole 12 of the lever 6. Therefore, the force of the spring 18 holds the joint 13 and thus the valve piece and the lever 6 in the position shown in FIG. 2, and further counterclockwise rotation of the lever 6 is prevented.

When the lever 6 is rotated clockwise against the force of the spring 18 from the state shown in FIG. 2, the pin 15 moves into the groove 2.
While moving while being guided by 1, joint 13
moves downward. When the position of the pin 15 crosses the straight line connecting the shaft 5 and the spring-loaded pin 17 to the opposite side, the spring 18 exerts a force to rotate the lever 6 clockwise via the pin 15, and the lever 6 The pin 15 rotates until it comes into contact with the lower end 23 of the groove 21, and the valve piece reaches the lower limit position as shown in FIG. 3. In this state, the lever 6 and the valve piece are held, and the lever Further clockwise rotation of 6 is prevented. Even in this state, pin 15
is in contact with the outer end 12a of the elongated hole 12.
If you release your hand from the lever 6 before reaching the above state, the lever 6 will be returned to the state shown in FIG. 2 by the force of the spring 18, and will be at an intermediate position between FIG. It never stops.

The case in which the valve piece is operated in the opposite direction is clear from the above description, and will therefore be omitted.

In this embodiment, as shown in FIG. 4 and FIG.
5 and 26 are formed, respectively. The same applies to the frame body 4. The recesses 25 and 26 are aligned with the elongated holes 12 of the disk portion 8 of the lever 6 in FIGS. 2 and 3, respectively. Extends a certain length in the same direction as the elongated hole 12,
The inner end thereof is formed to be further away from the shaft 5 than the inner end 12b of the elongated hole 12. That is, while the lever 6 is stopped in the state shown in FIGS. 2 and 3,
When the joint 13 moves downward or upward, respectively, the pin 15 moves in the direction toward the shaft 5 in the elongated hole 15, enters into the depressions 25 and 26, and comes into contact with the inner ends 22a and 23a. This will prevent further movement.

In other words, when a water faucet is suddenly opened or closed, water hammer due to the sudden change in water pressure acts on the valve top, and this shocking force acts on the lever, causing it to switch to the opposite side. A so-called self-propelling phenomenon may occur.

However, in this embodiment, as described above,
The lever 6 has a long hole 12, and the pin 15 has a guide groove 21.
Since depressions 22 and 23 were provided at both ends of the
As described above, even if the water hammer acts, the force does not act as a force to rotate the lever 6, and the self-propelling phenomenon of the lever 6 is prevented.

FIG. 7 shows a lever 30 according to another embodiment of the present invention.
shows a side view of the

The lever 30 has substantially the same shape as the lever 6 of the first embodiment, but a disc portion 31 thereof is partially formed with slits 32 to form a bifurcated shape. Elongated holes 34a and 34b having the same shape are provided in the forked portions 33a and 33b, respectively.
With one end of the connecting rod 14 inserted into this slot 32, the pin 15 is inserted. In this embodiment, two springs 18 are used and are disposed along both side surfaces 35a and 35b of the disc portion 31. Therefore, the spring force acts symmetrically on the lever 6, and the operation of the lever 6 and thus the valve piece becomes very smooth.

Effects of the Invention Since the lever handle device for a water drain valve according to the present invention has the above-described structure, its operation is simple and the valve piece can be reliably and stably held at a predetermined position. Furthermore, it is possible to provide a lever handle device that has a simple structure and is inexpensive.

[Brief explanation of the drawing]

FIG. 1 is a front view of a lever handle device according to an embodiment of the present invention, and FIGS. 2 and 3 are side views with one of the frame bodies removed.
The states of the lever handle device corresponding to the states in which the valve pieces are located at the upper and lower limit positions are shown, respectively. FIG. 4 is a partial plan view of the frame body, FIG. 5 is a sectional view taken along the line - in FIG. 4, FIG. 6 is a plan view of the lever, and FIG. 7 is a side view of the lever according to the second embodiment. . 2... Frame, 5... Shaft, 6... Lever, 1
3... joint, 14... connecting rod, 15... pin, 17... spring hanging pin, 18... spring.

Claims (1)

[Claims for Utility Model Registration] (1) A valve piece that is attached to the upper part of a jacket pipe of a drain valve and that is housed in the jacket pipe is moved between a first position and a second position in the axial direction of the jacket pipe. A lever handle device for a water drain valve that is operated between a frame attached to the upper part of the mantle tube and a first shaft implanted in the frame, which rotates within a plane extending in the axial direction of the mantle tube. a lever arranged to be movable in the axial direction of the mantle; a coupling member adapted to be connected to a valve piece in the mantle; a connecting rod whose other end is rotatably connected to the lever at a position eccentric from the first axis to the upper end of the connecting member; a fixed spring hook member provided on the frame; The second shaft is disposed between the second shaft and the spring hanging member, and always applies a biasing force in a direction that moves the second shaft away from the spring hanging member.
a spring acting on the shaft of the lever; first and second stopper members for preventing rotation of the second shaft beyond two rotational positions when the lever rotates between the first and second rotational positions; A lever handle device for a drain valve, wherein a movement locus intersects a straight line connecting the first axis and the spring hanging member. (2) A guide groove is formed in the frame to guide the second shaft when the lever rotates, and walls at both ends of the guide groove constitute the first and second stopper members. The lever handle device for a drain cock according to claim 1. (3) The lever handle device for a drain plug according to claim 2, wherein the hole for receiving the first shaft of the lever is an elongated hole, and a recess is provided in the inner circumferential wall at the end of the guide groove. (4) The portion of the lever that is connected to the connecting rod is bifurcated, the connecting rod is inserted between the two prongs, and the spring is inserted between the two prongs. 2. The lever handle device for a drain valve according to claim 1, wherein the lever handle device is provided with two.