JPS5813186Y2 - Kotuku - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cock with a lockable handle.

Due to security requirements, many cocks used as main valves in general household piping for city gas, LPG, etc. are equipped with a locking mechanism.

The conventional locking mechanism is one that is obvious to those skilled in the art, but usually involves opening a communication port from the nozzle part of the cock to the cock body, cutting a thread on one side, and inserting a small screw. something is being used.

This locking mechanism locks the handle in the closed state,
This prevents gas from being inadvertently resupplied to gas appliances whose pilot flame has gone out.

Subsequently, a demand for a cock that locks the handle even in the open position has arisen in order to enhance security, etc. On the other hand, the handle lock in the open position is sometimes considered inconvenient, so there is a need to increase the number of types of cocks.

The present invention provides a cock that can be selectively used as a handle lock in both the open and intermediate positions and as a handle lock only in the closed position.

The cock of the present invention can lock the nozzle in either the open or closed position, or both positions, and has the following configuration.

That is, the inner cylindrical surface of the central opening of the cock body has an inner circumferential groove between the handle and the stopper, which are inserted into the inner cylindrical surface, and from this inner circumferential groove there are three notches arranged at 90 degree intervals. The chip extends in one direction of the cylinder.

A stop plate is provided between the needle and the stopper and rotates with them, and the stop plate has a small protrusion at its tip.

The small protrusion of this stop plate is housed in the inner circumferential groove,
It is pressed by a spring or the like in the direction in which the notch extends, and the small protrusion fits into the notch and stops rotating at the notch.

Furthermore, a knock pin is provided in a through hole provided in the handle near the small protrusion of the stop plate, and the small protrusion of the stop plate is opened from the notch by operating the knock pin from above the handle.

Examples will be illustrated and explained below.

FIG. 1 is a longitudinal sectional view showing the overall structure of the cock according to the present invention, in which 1 is a main body, 2 is a stopper, 3 is a handle, and 4 is a spring.

The main body 1 has a pipe connection port 1 a t 1 b, a taper hole 1 c for attaching a stopper, and a central opening 11 above the taper hole 1 c.

A circumferential groove 9 having a rectangular cross section is provided on the inner surface of the central opening 11.

The circumferential groove 9 has an upward notch 12 that reaches the upper end surface of the central opening 11 .

As shown in FIG.
They are provided at three locations 12A, 12B, and 12C at 90° intervals except for one location in the axial direction of b.

A circumferential groove 7 having a semicircular cross section is provided below the circumferential groove 9.

The circumferential groove I is an insertion hole 7a penetrating the outer peripheral surface of the central opening 11.
has.

7b is an outer circumferential groove located on the same plane as the circumferential groove 7, and 7c is a cover made of a spring or the like that fits into the outer circumferential groove 7b.

The plug 2 has an outer flow opening 2a and an upper projection, and the outer peripheral tapered surface 2c contacts the tapered hole 1c of the main body 1 and rotates.

As shown in FIG. 4, the handle 3 has a lid part 3a and a grip part 3b.
and a lower protrusion 3c.

As is clear from FIG. 3, the lower protrusion 3c has a round hole 1.
A notch 10 consisting of a straight groove 0a and a straight groove 10b is formed.

The upper protrusion 2b of the stopper 2 is engaged with the straight groove 10.

A plurality of hemispherical locking holes 6 (four in this example) are provided at appropriate intervals on the outer periphery of the lower protrusion 3c.

The locking hole 6 faces the circumferential groove T of the main body 1, and the insertion hole 7a
By inserting the balls 5 and locking them into the respective locking holes 6, the handle 3 is rotatably engaged with the main body 1.

A stop plate 8 is attached to the notch 10 of the lower protrusion 3c.

The stop plate 8 consists of a disc part 8a, a locking part 8b, and a small protrusion 8c at the tip thereof.

The locking portion 8b is locked in a straight groove 10b of the notch 10 of the handle 3, and the stop plate 8 rotates together with the dollar 3.

The small protrusion 8c of the stop plate engages with the circumferential groove 9 of the upper opening 11 of the main body 1, and when the small protrusion 8c reaches the position of the upward notch 12 by rotation of the handle 30, the spring 4
Since the stop plate 8 is pressed upward by the repulsive force, the small protrusion 8c is engaged with the notch 12, and the handle 3 is locked.

In order to unlock the handle, the locking portion M 8 b K of the stop plate 8 is brought into contact with the grip portion 3 of the handle 3 .
A knock pin 13 is provided passing through b.

When the knock pin 13 is pushed down, the locking portion of the stop plate is lowered, and the small protrusion 8c can be reengaged with the circumferential groove 9 of the main body 1, and the handle 3 becomes rotatable.

The spring 4 is appropriately compressed and installed between the upper end surface of the stopper 2 and the disk portion 8a of the stop plate 80, and the stop plate 8 is pressed by the handle 3, so the stopper 2 is always held by the spring 4. Being pressed.

The cock according to the present invention has the above-mentioned configuration, and the grip portion 3b of the handle 3 is A as shown in FIG.

When the cock is in position B or C and the cock is opened or closed, the handle will be locked in either the open or closed position.

(A, B, and C correspond to 12A, 12B, and 12C in FIG. 2).

On the other hand, if you use the handle so that it is in the A, C, or D position, the stop plate will not operate in the D position, so the handle will not be locked in the open position, but will only be locked in the closed position. become.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of the cock according to the present invention, and Fig. 2 is a longitudinal sectional view of the cock according to the present invention.
Figure 3 is a sectional view taken along line A-A in the figure, Figure 3 is a BB cross-sectional view in Figure 1, and Figure 4 is
The figure is a top view of FIG. 1. 1: Main body, 2: Stopper, 3: Handle, 4 Spring, 5
: Ball, 6: Locking hole, 7: Peripheral groove, 8 Nist strip, 9
: Peripheral groove, 10: Notch, 12: Notch.

Claims (1)

[Scope of Claim for Utility Model Registration] A main body having a pipe connection port and a central opening, a plug placed inside the central opening of the main body, and a handle mounted on the central opening of the main body for rotating the plug. In this cock, the inner cylindrical surface of the central opening has an inner circumferential groove between the handle and the stopper, and three notches arranged at 90 degree intervals extend from the inner circumferential groove in one direction to the cylindrical surface. A circumferential groove having an insertion hole is provided below the stub. ...The lower protruding part of the handle is provided with hemispherical locking holes arranged at appropriate intervals on the outer periphery, and the ball is inserted between the locking hole and the circumferential groove between the main body and the handle. By engaging them, they are rotatably integrated. ... between the handle and the stopper, there is a stop plate that is rotated together with them and pushed with elasticity in the direction in which the notch extends, and the stop plate has a small protrusion at one end, and this small One protrusion is provided in the inner circumferential groove, and the protrusion moves within the groove as the handle rotates, and enters into the notch due to the elasticity and is stopped. The dowel pin is provided in a through hole provided on the handle near the small protrusion of the stop plate, and by operating the dowel pin from above, the small protrusion of the stop plate can be released from the notch. A cook characterized by having done.