JPS6144064Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a ball type valve.

Generally, a ball type valve has a handle attached to the handle shaft that rotates the valve so as to be directly connected to the handle, and the handle is attached by a screw at the top. Therefore, the handle can be easily removed by loosening the screw, and the handle is removed when not in use to prevent unauthorized use. however,
Since the handle shaft is in a state of protruding outward, the handle shaft can be easily rotated using a jig such as pliers, and the water supply can be used without permission. Even if the handle is not used without permission, if the handle shaft is allowed to rotate, there is a risk of water leakage due to tampering.

The present invention was developed in view of these circumstances, and its purpose is to enable the handle attached to the handle shaft to be removed in a water-stopped state;
The present invention aims to provide a valve having a structure in which the handle shaft is not exposed to the outside.

The present invention will be explained in more detail with reference to the illustrated embodiments. 1 is the main body of a ball valve, and the main body has a built-in ball valve that opens and closes with a rotation of 90 degrees, which is commonly used. ,
A handle shaft 2 for rotating the ball valve is formed to protrude upward. A cylindrical body 3 is screwed so as to surround this handle shaft 2 and is fixed integrally therewith. This cylindrical body 3 has a stepped portion and a threaded portion 4, and a vertical groove 5 is carved on the inside of the cylindrical body 3, and this groove connects to a horizontal groove 6 approximately in the middle. It's on. This lateral groove 6 is carved in the circumferential direction of the inner periphery over a range of about 90 degrees, and is formed to have an L-shape together with the groove 5.
Further, the outer circumferential surface of the handle shaft 2 is provided with a large number of grooves 7 in the vertical direction along the entire circumference, so that it can be engaged with a drive shaft to be described later and can also slip in the circumferential direction, that is, in the rotational direction. There is a vertically processed section to prevent this from happening.

A handle 8 for rotating this handle shaft 2
is removably attached to the drive shaft 9 with, for example, a screw 10, and a protrusion 11 that fits into the groove 5 described above is provided on the side surface of the lower end of the drive shaft, and the lower end is a cavity 12. A groove 13 that substantially coincides with the groove 7 of the handle shaft 2 is provided on the inner wall of the cavity, so that it can be slidably fitted with the handle shaft in the axial direction and not slip in the circumferential direction. There is. Further, a cap-shaped ring 14 is fitted onto the drive shaft 9, and the screw thread provided inside the cap-shaped ring 14 is threaded into the threaded portion 4, thereby stabilizing the installation of the drive shaft 9. Prevents it from slipping out.

The relationship between the groove 5 of the cylinder 3 and the protrusion 11 of the drive shaft 9 is such that they are arranged in the same direction when the ball valve provided in the valve is in the closed state, and in the same direction when the ball valve is in the open state. A protrusion 11 is located within the horizontal groove 6 so that it will never come out.

The valve of the present invention having the configuration described above is
When the water supply is not used for a long period of time, the handle 8 is rotated 90 degrees to face the direction perpendicular to the water pipe, and the internal ball valve is closed. In this position, return the cover ring 14 and
When the handle 8 is unscrewed and the handle 8 is pulled upward, the protrusion 11 is located within the groove 5 and can be moved upward, and the drive shaft 9 comes out of the handle shaft 2 and is located within the cylindrical body 3. It becomes impossible to drive the handle shaft 2. Incidentally, after the drive shaft 9 is pulled out, it is sufficient to cover the threaded portion 4 with a blind cover or a cap.

When reusing the water supply, remove the blind lid or cap, align the protrusion 11 with the groove 5, and insert the drive shaft 9. The groove 7 of the handle shaft 2 will fit into the groove 13 of the cavity 12. When the drive shaft 9 and handle shaft 2 are fitted together without slipping, and the handle 8 is rotated 90 degrees to the right in the figure, the protrusion 11 will fit into the horizontal groove 6, and the drive shaft will not come out. At the same time, the ball valve opens and the water supply starts flowing. Therefore, the handle or the drive shaft cannot be removed when water is being used, and the drive shaft can only be removed when the ball valve is closed when not in use.

As explained above, an L-shaped groove is provided in the cylindrical body surrounding the handle shaft, and a drive shaft with a handle, which has a protrusion guided by this groove on the lower end side surface, can be freely inserted into and removed from the cylindrical body. Moreover, it is designed so that it cannot be removed when water is flowing, and can only be removed when the ball valve is closed.
If you remove the drive shaft with the handle when not using it for a long period of time, you will not be able to rotate the handle shaft with other jigs, and it will prevent water leakage due to unauthorized use or forgetting to close the valve. It has the excellent effect of being able to completely prevent it.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing the main parts of a valve according to the present invention, and FIG. 2 is a perspective view showing only the main parts of the valve, with a part thereof shown in cross section. 1... Main body of the ball valve, 2... Handle shaft, 3... Cylindrical body, 4... Threaded portion, 5... Vertical groove, 6... Horizontal groove, 7, 13... Groove, 8...
...Handle, 9...Drive shaft, 10...Screw, 11
... protrusion, 12 ... cavity, 14 ... cap-shaped ring.

Claims (1)

[Scope of utility model registration request] A circumferential slip prevention processing part is provided along the vertical direction on the upper circumferential surface of the handle shaft connected to the ball valve, and a cylindrical body is attached to surround the handle shaft, and a vertical groove is formed on the inner circumferential surface of the cylindrical body. and a horizontal groove are formed in an L-shape, a protrusion that fits into the groove is provided on the lower end side surface, a hollow portion is provided at the lower end into which the handle shaft fits without slipping in the circumferential direction, and a handle is provided at the upper end. A drive shaft is provided that is detachably attached to the ball valve, and when the ball valve is in a closed state,
A valve characterized in that the projection and the L-shaped groove are arranged in such a relationship that the drive shaft is located in a vertical groove from which the drive shaft can be pulled out.