JPH08303637A - Open / close valve with locking mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] The structure is simplified by using a structure in which the lock plate is pivotally supported on the rising part of the lever with a handle, and the lock part of the lock plate is spring-biased to lock to both sides and the upper part of the valve sleeve. The switching operation performance, lock performance, and reliability are improved. [Structure] In an on-off valve in which a lever 5 with a handle 5c arranged on a valve sleeve 1 is rotated X to rotationally operate a rotary valve 2 in a valve sleeve via a valve shaft 2b to control opening and closing, a rise of a lever with a handle is performed. The finger hook 1 which is pivotally supported on the portion 5b and rotates Y in a plane substantially perpendicular to the rotation X of the lever 5.
1b and a lock plate 11 with a lock portion 11a are provided,
A tension spring 16 is stretched between the lock portion 11a and the lever base plate portion 5a to lock the lock portion 11a by spring-biasing Z to the valve closed and valve open positions.
1d (21d) is provided on one side 1c and the other side 1d of the valve sleeve, and further, at least the upper portion 1b of the valve sleeve 1, the lock portion 11a of the lock plate is spring-biased to the valve half-open position. Locking lock part 21 for Z and locking
The feature is that a, 21b, and 21c are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid (liquid, steam, compressed air, etc.) which is installed in pipes of various kinds of equipment and devices and locked at each position of valve closing and valve opening or half valve opening. ) Shutoff and flow, or also relates to an on-off valve with a lock mechanism for adjusting the flow rate.

[0002]

2. Description of the Related Art In piping of various equipment and devices,
The lever with a handle arranged on the upper side of the valve sleeve rotates the valve element inside the valve sleeve via the valve shaft, and shuts off the fluid (liquid, vapor, compressed air, etc.) in the piping and adjusts the flow rate or flow rate. An on-off valve is installed.

However, since the on-off valve may be mistakenly touched by a lever with a handle to be switched, for example, a rotary operation key is removably fitted to a rotary valve arranged in a valve sleeve, and the rotary valve is To prevent the rotary valve from rotating at the valve closed position, or to lock (lock if necessary) the valve for rotating the rotary valve to the valve sleeve with bolts or keys, or for rotary operation. Locking means for various mechanisms have been developed, such as mounting a locking member on a lever and abutting the locking portion of the locking member against a valve sleeve or the like to prevent rotation of a rotary valve.

[0004]

The conventional locking means of the on-off valve requires the above-mentioned rotary operation key, bolt or key, lock or lock member, etc., and is used for attachment / detachment to / from the on-off valve, locking / unlocking. There is a problem in switching operability, lock performance, reliability, etc., such as requiring time and effort and not being able to easily perform switching operation at any time.

The present invention was developed in order to solve the above-mentioned problems. The object of the present invention is to rotatably support a lock plate on the rising portion of a lever with a handle and to lock the lock plate. It is an object of the present invention to provide an opening / closing valve with a locking mechanism, which has a structure in which a portion is biased by a spring and is locked to both sides or an upper portion of a valve sleeve, and the switching operability, locking performance, and reliability are improved as well as the mechanism is simplified.

[0006]

SUMMARY OF THE INVENTION The present invention relates to an on-off valve for controlling opening / closing by rotating a lever with a handle arranged on a valve sleeve to rotationally operate a rotary valve in the valve sleeve via a valve shaft. A lock plate with a finger hook and a lock that rotates in a plane substantially perpendicular to the rotation of the lever is pivotally supported on the rising part of the lever with a tension spring between the lock and the base of the lever. A locking mechanism is provided on one side and the other side of the valve sleeve that is tensioned to lock the locking portion by spring-biasing the locking portion to the valve closing position and the valve opening position. Also, the lock plate is rotated by a one-touch operation so that the lock portion can be locked by spring-biasing the valve closed position and the valve open position, and the switching operation is facilitated to improve the lock performance and reliability.

Further, at least an upper portion of the valve sleeve is provided with a locking lock portion for biasing the lock portion of the lock plate to the valve half-open position by spring to bias the lock portion of the lock plate to the half-open position. By locking
The valve closing and opening as well as the valve half-opening are facilitated to improve the flow rate control performance.

[0008]

In the opening / closing valve for controlling the opening / closing by rotating the lever with the handle arranged on the valve sleeve to rotate the rotary valve in the valve sleeve through the valve shaft, a finger hook portion is provided at the rising portion of the lever with the handle. The lock plate with the lock part is pivotally supported, tension springs are stretched between the lock part and the base part of the lever, and locking lock parts of the lock part of the lock plate are provided on one side and the other side of the sleeve. The lock mechanism is used, and the lock mechanism is easily attached to the on-off valve to simplify the structure.

In addition, the lock portion of the lock plate is easily switched between the valve closed position and the valve open position by a one-touch operation in which the lock plate and the lever are simultaneously gripped and rotated. At the valve closed position, the lock portion is locked. The locking lock part on one side of the valve sleeve is spring-biased and locked, and at the valve open position, the locking part is spring-biased and locked by the locking lock part on the other side of the valve sleeve, and the lock part is locked at any locking position. Unless the plate and lever are simultaneously rotated in a substantially right-angled direction, they are not accidentally unlocked, and excellent switching operation performance and reliable opening / closing performance can be obtained.

Further, when the lock part of the lock plate is locked to the locking lock part provided at least at the upper part of the valve sleeve by the one-touch operation, the lock part is locked to the valve half-open position by a strong spring bias, Similarly, this valve half-open lock is not deliberately released, and it is possible to obtain excellent reliable valve half-open performance together with the above-mentioned valve closing and opening performance such that the flow rate of the fluid can be adjusted and controlled easily and accurately. .

[0011]

1 and 3 show a first embodiment of the present invention, and FIG. 2 shows a second embodiment. In the figure, 1 is a valve sleeve of an on-off valve, 2 is a rotary valve rotatably arranged in the valve sleeve, 5 is a lever with a handle 5c for arranging on the valve sleeve and switching the rotary valve via a valve shaft 2b, 7 is a stopper provided to project on the valve sleeve, 11 is a lock plate with a lock portion 11a pivotally supported on the lever 14b and finger hook portions 11b and 11c, 16 is a tension spring stretched between the lock plate and the lever, 15 And 21a to 21d are locking locks provided on the valve sleeve.

The first embodiment will be described in detail (see FIGS. 1 and 3). As shown in the drawing, the rotary valve 2 is inserted into the valve sleeve 1 (nut portions are formed at both ends), and the press nut 3 is screwed. The rotary valve 2 is rotatably arranged between the rotary valve 2 and the internal valve seat 1a, and the valve shaft 2b screwed onto the rotary valve 2 is projected to the upper portion 1b of the valve sleeve. Further, the fitting hole 5d of the base plate portion 5a of the lever 5 with the handle 5c is inserted into the valve shaft 2b through the washer 4a.
And the nuts 4c are fitted to the washer 4b and the stopper 7 is projectingly provided on the upper portion 1b of the valve sleeve.
Grasp c and rotate the lever 5 as shown by the arrow X to move the valve shaft 2
The valve closing position (see FIGS. 1A and 1B) at which one side surface 5e of the lever substrate portion 5a abuts one side of the stopper 7 to block the flow of fluid by rotating the rotary valve 2 via b, and the substrate portion. 5a
The projection 5f of the valve contacts the other surface of the stopper 7 so that the flow hole 2a of the rotary valve 2 is aligned with the valve sleeve 1 and is an open / close valve that is switched to a valve open position (see FIG. 1C) through which fluid flows. .

The substrate 5a of the lever 5 and the handle 5
The central portion of the lock plate 11 is provided with a shaft hole 12a, 12b, a sleeve 14a, a screw shaft 14
b, a washer 14c, and a nut 14d rotatably support the shaft 14b, and a tension spring 16 is stretched between the mounting portion 13a of the lock plate 11 and the hole 13b of the base portion 5a of the lever 5, and the tension spring 16 is used. Rock plate 1
1 The lock portion 11a on the front end side is spring-biased in the direction of the arrow Z, and the locking lock portion 15 is provided on one surface 1c of the valve sleeve 1 by padding (or cutting) and the other surface 1d itself is locked. As the portion 1d, at the valve closed position (see FIGS. 1A and B),
The lock portion 11a of the lock plate 11 is abutted against the locking lock portion 15 of the valve sleeve 1 by the spring bias Z and is locked. The finger hooks 11b and 11c provided on the other side of the lock plate 11 are pushed by a finger to rotate the lock plate Y against the spring bias Z (in a plane substantially perpendicular to the rotation X).
The lock plate 11 and the lever 5 are easily rotated by a one-touch operation in which the handle 5c of the lever 5 is lifted and the handle 5c of the lever 5 is rotated X at the same time, so that the valve open position (see FIG. 1C).
When released, the end surface of the lock portion 11a comes into contact with the other side 1d (locking lock portion) of the valve sleeve 1 under the spring bias Z to be locked, and is similarly switched to the valve closed position and locked. It is an on-off valve with a mechanism.

In the opening / closing valve with the locking mechanism of the first embodiment, the lever 5 with the handle 5c and the locking plate 11 are provided.
1A and 1B, the side surface 5e of the base portion 5a of the lever comes into contact with the stopper 7 to close the valve, and the side surface of the lock portion 11a of the lock plate 5 becomes the side of the valve sleeve 1. The locking lock portion 15 on the one side 1c is abutted under the spring bias Z to be locked to the valve closed position, resists the spring bias Z, and simultaneously locks the lock plate 11 and the lever 5 in a substantially perpendicular direction. Unless the rotation Y and X are performed, this valve closing lock cannot be deliberately released.

Further, the lock plate 1 is rotated Y against the spring bias Z with the fingers by the finger hooks 11b and 11c.
By the one-touch operation of raising the 1a side and simultaneously gripping the handle 5c and rotating the lever 5 X, the projection 5f of the base plate portion 5a comes into contact with the stopper 7 to the valve open position, and when released, the lock portion 11a of the lock plate is released. The end surface of the valve sleeve 1 is on the other side 1d (locking lock portion) under the spring bias Z.
Is locked at the valve open position, the lock plate 11 is rotated Y against the spring bias Z, and at the same time the lever 5 is rotated at a substantially right angle X, the valve open lock is not released inadvertently. Similarly, the lock plate 11 and the lever 5 can be grasped at the same time and easily switched to the valve closed position and locked by a one-touch operation of rotating Y and X.

In the opening / closing valve with the lock mechanism of the first embodiment, as described above, the lock plate 11 is pivotally supported 14b on the rising portion 5b of the lever 5 with the handle, and the tension spring 16 is attached to the lock plate to make the valve sleeve. Locking parts 1 of the locking parts 11a of the locking plate 11 on both sides of
5, 1d (in the first embodiment, the other surface itself of the valve sleeve 1 is formed in the locking lock portion), the locking mechanism can be easily attached to the on-off valve with a simple structure.

Further, as described above, the lock portion 11a of the lock plate can be easily switched to both sides of the valve sleeve 1 by a one-touch operation of gripping the lock plate 11 and the lever 5 with the handle and rotating Y, X. It is possible to lock and close the valve, and the lock of the valve close and the valve open causes the lock plate 11 to rotate Y against the spring bias Z and at the same time does not rotate the lever 5 in a substantially perpendicular direction. limit,
Both locks cannot be released. That is, the unlocking is practically impossible unless an operation is performed, and erroneous valve opening / closing operations are effectively prevented, and excellent switching operation performance as well as opening / closing performance and reliability are obtained. In the above-described first embodiment, the other surface 1d of the valve sleeve 1 itself is formed as a locking lock portion, but if necessary, the other surface 1d is locked by a fitting groove or a protrusion as shown in FIG. A lock portion 21d is provided (see FIG.
However, the reliability of the valve opening lock can be further improved.

In the second embodiment shown in FIG. 2, 1/3 valve half-open or 1/2 is provided in the upper portion 1b of the valve sleeve 1 along the rotation locus of the locking portion 11a of the lock plate 11 as compared with the first embodiment.
Valve lock half-open, 2/3 valve half-open locking lock parts 21a, 21
The structure is characterized in that b and 21c are provided, and the locking lock portion 21d for opening the valve is provided on the other side 1d of the valve sleeve 1, and the other configurations are similar to those of the first embodiment. Each of the locking lock portions 21a to 21d is formed in the fitting groove of the lock portion 11a of the lock plate in the figure, but a structure such as a pair of protrusions is provided between them as locking lock portions. You can also Further, the number of locking locks is increased or decreased as necessary, and the valve opening is displayed on each locking lock to facilitate the operation.

In the second embodiment, the lock plate 11 and the lever 5 are simultaneously rotated Y and X as described above, and the lock portion 11a of the lock plate is locked to any one of the lock engaging portions 21a to 21c. When it is locked with the spring bias Z to 21 (locked to 21c in FIG. 2B), the rotary valve 2 is easily set and locked to the valve half-opened state of the required opening, and the tension spring 16 extends and the spring biases. The valve closing performance and the valve opening performance as well as the excellent valve half opening switching performance that the valve half opening lock will not be released unintentionally unless Z is strengthened and the lock plate 11 and the lever 5 are simultaneously rotated Y and X. , Reliability is obtained. Further, at the valve open position, the lock portion 11a of the lock plate 11 is locked and locked by the locking lock portion 21d, so that the lock performance and reliability of the valve opening are further enhanced.

In the illustrated example, the relative fitting angle between the rotary valve 2 and the lever 5 may be changed so that the valve closing position and the valve opening position are mutually changed.

[0021]

As described above, the present invention relates to an on-off valve for rotating and opening and closing a handle valve on a valve sleeve to rotate a rotary valve in a valve sleeve through a valve shaft to control opening and closing,
The lock plate with the finger and the lock part is pivotally supported on the rising part of the lever with handle, and a tension spring is tensioned between the lock part and the base part of the lever to lock the lock part on one side and the other side of the valve sleeve. By forming on the locking lock part of
A lock mechanism is easily attached to the on-off valve to simplify the structure.

Also, the lock part of the lock plate can be easily switched to both the valve closed position and the valve open position by a one-touch operation of rotating the lock plate and the lever at the same time. Also, the lock portion is locked under the bias of the spring so that the lock is not released indiscriminately as described above, and the opening / closing performance and the reliability are remarkably improved together with the switching operation performance of the opening / closing valve.

Also, the locking portion provided on at least the upper portion of the valve sleeve is engaged with the locking portion of the locking plate by a one-touch operation so that the locking portion is easily locked to the valve half-open position under strong spring force. Similarly, the half-open lock of the valve is not deliberately released, and the flow rate of the fluid can be easily adjusted with high precision, so that the half-open performance and reliability of the half-open valve as well as the valve closing performance and the valve opening performance are significantly improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a valve closed position (A), a front view thereof (B), and a front view of a valve open position (c) showing a first embodiment of the present invention.

FIG. 2 is a perspective view of a valve closed position according to the second embodiment (A) and a front view of a valve half open position (B).

FIG. 3 is a development view of each member of the first embodiment.

[Explanation of symbols]

 1 valve sleeve 1b upper part (valve sleeve) 1c one side (valve sleeve) 1d other side (valve sleeve) 2 rotary valve 2b valve shaft 5 lever 11 lock plate 11a lock part (lock plate) 11b, 11c finger hook part (lock plate) ) 14b Axial support (lock plate) 15, (1d, 21d) Locking lock part 16 Tension springs 21a, 21b, 21c Locking lock part X, Y Rotation Z Spring bias

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Taiichi Tsuruta 1-1-19 Higashishimbashi, Minato-ku, Tokyo Yakult Honsha Co., Ltd. (72) Inventor Kazunori Ando 1-1-1 Higashishimbashi, Minato-ku, Tokyo No. 19 Yakult Honsha Co., Ltd. (72) Inventor Yoshiyoshi Kamijo 1-1-1, Higashishinbashi, Minato-ku, Tokyo No. 19 Yakult Honsha Co., Ltd. (72) Inventor Toshikichi Oishi 1-1, Higashishimbashi, Minato-ku, Tokyo No. 19 Yakult Honsha Co., Ltd. (72) Inventor Masahiro Takagi 1-11-1 Higashishimbashi, Minato-ku, Tokyo Yakult Honsha Co., Ltd. (72) Inventor Ichiro Hieda 1-chome, Higashishimbashi, Minato-ku, Tokyo No. 19 Yakult Honsha Co., Ltd.

Claims (2)

[Claims] 1. An on-off valve for rotating and controlling a rotary valve in a valve sleeve through a valve shaft by rotating a lever with a handle arranged on a valve sleeve, wherein a shaft is provided at a rising portion of the handle lever. A lock plate with a finger hook and a lock that rotates in a plane substantially perpendicular to the rotation of the lever is provided, and a tension spring is stretched between the lock of the lock plate and the base of the lever. An on-off valve with a locking mechanism is characterized in that locking lock portions for biasing the lock portion to a valve closed position and a valve open position by spring are provided on one side and the other side of the valve sleeve, respectively. 2. An on-off valve with a locking mechanism according to claim 1, wherein at least an upper portion of the valve sleeve is provided with a locking lock portion for biasing the locking portion of the locking plate to the valve half-open position by a spring. An on-off valve with a characteristic locking mechanism.