JPH0535257Y2 - - Google Patents

Description

[Detailed description of the invention] [Summary] By forming a protective cover with a predetermined color when the lever for operating the on-off valve is positioned at a predetermined position, the on-off valve can be opened or closed. This is to prevent forgetting to close it.

[Industrial application field]

The present invention relates to an opening/closing mechanism that opens and closes a flow passage of a predetermined tube by rotating a lever, and in particular, is formed so that a colored protective cover is attached when the lever is positioned at a predetermined position. Regarding the opening/closing mechanism.

Pipes arranged to deliver gas, liquid, etc. are usually equipped with an opening/closing mechanism, and are configured to open when in use and close when not in use.

If the opening/closing or closing operation of the opening/closing mechanism is forgotten, a serious accident may occur, and consideration is generally given to displaying the opening/closing or closing state.

However, even if such a display is provided, the display is meaningless if the display and the state of the opening/closing mechanism do not match.

Therefore, in order to prevent such forgetting of opening/closing operations, it is desirable that the display and the state of the opening/closing mechanism always match.

[Conventional technology]

Conventionally, the configuration was as shown in the conventional explanatory diagram of FIG. In FIG. 3, a is a plan view and b is a side view.

As shown in FIG. 3, an on-off valve 1 is connected to a tube 3 having a flow path 4 through which a predetermined gas or liquid flows from the direction of arrow A to the direction of arrow B.
By rotating the lever 10 of the on-off valve 1, the gas or liquid flowing through the flow path 4 is closed and opened.

When opening, closing, and closing the on-off valve 1 by operating the lever 10 in this manner, it is difficult to determine whether the on-off valve 1 is actually opened, closed, or closed based on the rotation direction of the lever 10. .

Therefore, the display board 11 is locked, and an indication of opening/closing of the display board 11, for example, a color or the words "open/close" is displayed on the front and back of the display board, and each time the lever 10 is operated, the front and back are reversed. In some cases, the actual state of the on-off valve 1 can be determined.

[Problem that the invention attempts to solve]

However, with such a configuration, it is difficult to always reverse the display plate 11 when operating the lever 10, and there are cases where the lever 10 is operated but the display plate 11 is forgotten to be reversed. The state of the door and the display on the display board 11 do not match, and the door remains open or remains closed, resulting in the same accident as described above.

[Means for solving problems]

FIG. 1 is a side view of the principle of the present invention.

As shown in FIG. 1, a lever 2 that is rotated,
It comprises an on-off valve 1 which is opened and closed by the rotation of the lever 2, and a tube 3 connected to both ends of the on-off valve 1, and a flow path 4 formed from one side of the tube 3 to the other. The opening/closing mechanism is opened and closed by an opening/closing valve 1, and the lever 2 is provided with a protrusion 5, and the protrusion 5 has a mounting hole 6C that can be freely inserted and removed, and when the lever 2 is positioned at a predetermined position. , a side wall portion 6 into which the protrusion 5 is inserted into the mounting hole 6C and which is mounted so as to cover the outer periphery of the on-off valve 1;
B is provided with a protective cover 6 formed with B, and
The exposed portion 6A of the protective cover 6 is colored with a predetermined color.

With this configuration, the above-mentioned problems are solved.

[Effect]

That is, a protective cover is provided that is closed only when the lever is positioned at a predetermined position, and it is possible to determine whether the opening/closing valve is open or closed based on the color of the protective cover.

Therefore, with this configuration, if the lever is located at a location other than the predetermined location, the protective cover will not be attached, which would cause a discrepancy between the actual status of the open/close valve and the display. Things like this can be avoided.

〔Example〕

The present invention will be explained in detail below with reference to FIG.
FIG. 2 is an explanatory view of one embodiment of the present invention, in which a is a side view and b is a perspective view. The same reference numerals indicate the same objects throughout the figures.

As shown in FIG. 2a, the lever 2 is provided with a protrusion 5, and a protective cover 6 is attached to the lever 2 as shown by the arrow D, but the rest of the structure is the same as described above.

As shown in b, this protective cover 6 is made of a metal material or a synthetic resin material.
The exposed portion 6A is colored in a predetermined color, and the inner periphery is provided with a mounting hole 6C that can be inserted into and removed from the protrusion 5, and further,
It is formed by providing a side wall portion 6B that is inserted into the outer periphery of the on-off valve 1.

Therefore, when the lever 2 is rotated and positioned in the vertical direction in the figure, the protective cover 6 can be attached, but when the lever 2 is positioned horizontally, the side wall portion 6B comes into contact with the tube 3, and the protective cover 6 can be attached. The cover 6 cannot be attached.

Therefore, for example, if the outer periphery of the on-off valve 1 is made red and the exposed part 6A of the protective cover 6 is made white, when the on-off valve 1 with the lever 2 positioned horizontally is in the closed state, the protective cover 6 can be attached. Therefore, when the on-off valve 1 is in the closed state, it always turns red, and it is possible to avoid a mismatch between the display and the actual closed state.

[Effect of idea]

As described above, according to the present invention, the protective cover can be attached only when the lever is positioned at a predetermined position.

Therefore, since the display caused by installing the protective cover corresponds to whether the on-off valve is open or closed, it is possible to prevent accidents caused by discrepancies between the actual open/closed state and the display, which has a great practical effect. It is.

[Brief explanation of the drawing]

Fig. 1 is a side view of the principle of the present invention, Fig. 2 is an explanatory view of an embodiment according to the present invention, a is a side view, b is a perspective view, Fig. 3 is a conventional explanatory view, and a is a plan view. ,b
shows a side view. In the figure, 1 is an on-off valve, 2 is a lever, and 3
4 is a tube, 4 is a flow path, 5 is a protrusion, 6 is a protective cover, 6A is an exposed portion, 6B is a side wall portion, and 6C is a mounting hole.

Claims (1)

[Claims for Utility Model Registration] Comprising a lever 2 that rotates, an on-off valve 1 that is opened and closed by the rotation of the lever 2, and a tube 3 connected to both ends of the on-off valve 1, A flow path 4 formed from one side of the tube 3 to the other side.
is an opening/closing mechanism that is opened and closed by the opening/closing valve 1, and when the lever 2 is positioned at a predetermined position, the lever 2 is inserted into and removed from projections 5 formed at at least two opposing positions. A protective cover 6 is provided with a side wall portion 6B for sandwiching the opening/closing valve 1, and a protective cover 6 is provided with a mounting hole 6C on the inner wall, and has a side wall portion 6B for sandwiching the opening/closing valve 1.
By inserting and removing the mounting hole 6C, the protective cover 6 is formed so that it can be attached freely, and the attachment of the protective cover 6 covers the lever 2 and the opening/closing valve 1, and the protective cover 6 also covers the lever 2 and the on-off valve 1. The opening/closing mechanism is characterized in that the exposed portion 6A of the opening/closing valve 6 is colored in a color different from that of the opening/closing valve 1.