JPH0419271Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a handle for a manual valve, and more particularly to a handle for a manual valve that increases the operating force when opening and closing the valve.

[Prior art]

A manual valve that manually opens, closes, or adjusts the flow of fluid usually has a handle fixed to a valve shaft extending outward from a casing, and the valve is opened and closed by rotating the handle.

The handle consists of a shaft support member for fixing to the valve shaft and an annular body coupled to the shaft support member, and is adapted to be rotated by holding the annular body by hand.

[Problem that the invention attempts to solve]

Some manual valves are opened and closed frequently, but many are left permanently closed or open for long periods of time and are only opened and closed infrequently. In such manual valves, the valve stem becomes stuck due to rust, etc., and a large amount of force is required to open and close the valve. Therefore, some kind of external force reinforcement means, such as hooking a spanner or the like on the annular body of the handle, must be used to rotate the valve. Ta. In addition, in the case of small manual valves, the entire valve has recently been downsized, and
The diameter of the annular body of the handle is also becoming smaller so that it does not interfere with surrounding equipment. Therefore, although a large rotational force is required to rotate the handle against resistance due to fluid pressure, it is not possible to apply sufficient force for opening and closing operations, and a tool commonly called a Will key is required. It is often carried by an operator at all times to open and close it. Therefore, it is desirable to have a small handle for manual valves that does not require special tools for opening and closing, does not take up much space, and can increase the rotational force during opening and closing operations. It is rare.

[Means for solving problems]

The object of the present invention is to provide a manual valve handle that satisfies these requirements.

The manual valve handle of the present invention includes a shaft support member for fixing to the valve shaft and an annular body connected to the shaft support member, in which a part of the annular body is attached to one end of the handle. It is characterized in that it can be detached to open the ring as a rotating shaft to form an extended handle.

[Embodiments and Effects] Next, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a plan view showing an example of the manual valve handle of the present invention, and FIG. 2 is a schematic perspective view of the portion shown in FIG. 1, with the extension handle 5 removed. As is clear from FIGS. 1 and 2, in the manual valve handle of the present invention, a valve shaft 1 is fitted and fixed to a shaft support member 2 located at the center thereof. The annular body 3 extends from the shaft support member 2 via three radial portions 11 extending radially outward. The connecting portion between the radial portion 11 and the annular body 3 in the portion shown in FIG. 1 is formed in a stepped manner as shown in FIG. 2. A separate arcuate portion forming part of the annular body 3 is an extension handle 5.
, and one end of the handle 5 is connected to the hole 10 in FIG.
It is pivotally connected to the shaft 7 via the shaft 7 as shown in FIG. Thereby, the end of the extension handle 5 can be opened from the chain line state to the solid line state about the shaft 7. The other end connecting portion 6b of the extension handle 5 is detachably secured to the end of the other annular body 3 formed as shown in FIG. 2 by means of a pin 8 or the like. Note that the hole 1 in FIG.
0 can be fitted with it.

Next, to explain the function of this manual valve handle, except when opening the valve, the extension handle 5 is placed in a position as shown by the dotted line in FIG. 1, and is shaped like a normal annular handle. Prior to the valve opening operation, the pin 8 of the coupling part 6b is removed, and the annular body 3 is separated from the ring and rotated to open the ring to the position shown by the solid line in the figure, using the shaft 7 of the coupling part 6a as the rotation axis. When the extension handle 5 is rotated to the position shown by the solid line, the back of the extension handle 5 near the joint 6a comes into contact with the outer circumference of the annular body 3, and its stopper action prevents further rotation. If a force is then applied to the extension handle 5 in the direction of the open arrow in the figure, the valve can be easily opened due to the increased force. When closing the valve, a smaller operating force is required than when opening the valve, so the extension handle 5 can be returned to the position indicated by the dotted line.

The example in the drawing shows a valve suitable for opening the valve, but this is only a representative example since normally a large operating force is often required to open the valve.
Of course, the present invention is not limited to this, and it is also possible to make it suitable for when the valve is closed. In some cases, it may be possible to have both functions.

For example, by reversing the structure of the connecting parts 6a and 6b in the figure, it becomes a handle suitable for cases where a large operating force is required when closing the valve, and by making both the connecting parts 6b in the structure. The handle can be suitable for cases where a large operating force is required to open and close the valve.

Further, as shown in FIG. 4, as the joint parts 6a and 6b,
If a protruding shaft 9 is provided at the end of the annular body 3, and holes 10 into which the protruding shaft 9 can be inserted are provided at both ends of the extension handle 5, the extension handle 5 can be moved in a direction perpendicular to the plane of the drawing. Since the handle can be attached to and detached from the coupling part, it can be made into a handle suitable for both opening and closing the valve. Further, the length of the protruding shaft 9 may be extended by the upper surface of the extension handle 5.

According to another embodiment of the invention, two extension handles as shown in the figure are provided diagonally on the annular body 3;
It is possible to configure the valve so that it can be opened and closed with both hands. In this case, it is preferable to arrange four radial parts 11 provided on the shaft support member at every 90 degrees, and the above-mentioned connecting parts may be applied as is.

In yet another embodiment of the present invention, an operating handle (for example, a grip bar) is provided near the distal end of the extension handle 5 (either one or both ends may be used) in a direction perpendicular to the plane of the drawing. ) can also be provided.

[Effect of idea]

In the present invention, a part of the annular body of the manual valve handle can be detached to open the ring using one end as the rotation axis to form an extended handle, thereby increasing the operating force when opening and closing the manual valve. In addition, by returning the extension handle to its original annular shape after operation, the handle returns to a compact size, preventing it from getting in the way of surrounding equipment or causing external force to be applied to the tip of the protruding handle. There is no fear that the opening/closing operation will occur incorrectly.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an example of the manual valve handle of the present invention, and FIG. 2 is a schematic perspective view of the portion shown in FIG. 1, with the extension handle 5 removed.
FIG. 3 is a partially enlarged side view of the connecting portion 6a of the extension handle 5, and FIG. 4 is a longitudinal sectional view showing another embodiment of the connecting portion 6a, 6b. DESCRIPTION OF SYMBOLS 1... Valve stem, 2... Shaft support member, 3... Annular body, 5... Extension handle, 6a, 6b... Connection part, 7... Shaft, 8... Pin, 9... Protruding shaft, 10 …
...hole, 11...radial part.

Claims (1)

[Scope of utility model registration request] In a manual valve handle consisting of a shaft support member 2 for fixing to a valve stem 1 and an annular body 3 coupled to the shaft support member 2, a part of the annular body 3 rotates around the ring with one end thereof as a rotation axis. A manual handle characterized in that it can be detached to open to form an extension handle 5.