JPH0629574Y2 - One-hand operated valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a valve of a one-handed operation type, in which a ball cock can be opened and closed with one hand.

(Prior Art) Conventionally, a ball cock is often used as a valve for opening and closing a flow path of a liquid agent having a high viscosity such as an adhesive. The ball cock includes a ball valve having a through hole and a valve seat that is in surface contact with the ball valve. In the open position, the opening provided in the valve seat and the through hole of the ball valve are aligned with each other. In the closed position, the flow passage is formed, and the opening is provided in the valve seat and the through hole of the ball valve does not coincide with each other so that the flow passage is blocked. Therefore, the ball cock has almost no possibility of being clogged, and even if it is clogged,
With the ball valve in the open position, the clogging can be easily eliminated by causing the rod-shaped body to penetrate the flow path. Therefore, it is particularly suitable for opening and closing the flow path of a liquid agent that has a high viscosity and is easily hardened, such as an adhesive agent.

(Problems to be solved by the invention) However, in the ball cock, it is necessary to rotate the ball valve 90 degrees in one direction during the opening operation, and it is necessary to rotate the ball valve 90 degrees in the opposite direction during the closing operation. However, since the load is considerably heavy, it was difficult to operate the ball cock with one hand when the ball cock was inserted in the middle of the flow path. Therefore, it has been strongly desired to realize a mechanism that allows a ball cock inserted in the middle of the flow path to be operated with one hand.

In order to operate with one hand, it is usually considered to use grip strength. Grip force is a force in the direction of squeezing the palm, and a fairly strong force can be obtained, but since this is a unidirectional force, it can be used only when the ball cock is opened or closed. Therefore, it is possible to perform either one of the opening operation and the closing operation by gripping force and the other operation by the restoring force of the spring, but in this case, the restoring force of the spring must be sufficiently strong. I won't. Then, there is a problem that a very large operation force is required when performing an operation in a direction against the restoring force of the spring.

Therefore, for example, as disclosed in Japanese Utility Model Laid-Open No. 47-26429, hook wheels having engaging holes formed at intervals of approximately 90 degrees are attached to the rotary shaft of the valve. It is conceivable that the other end of the link member, one end of which can be engaged with the engaging hole, is pivotally supported by the lever, and the pivot shaft of the valve is rotated only in one direction by operating the lever. However, if you want to insert a valve in the middle of the flow path, there is a problem that it will be an obstacle unless you make it compact, and in order to operate the lever with one hand, you can grasp with the palm There is a need to.

The present invention has been made in view of such a point, and an object thereof is to open and close a ball cock inserted in the middle of a flow path with one hand so that it can be easily operated with one hand. In providing the valve.

(Means for Solving Problems) In the one-hand operation type valve according to the present invention, in order to solve the above-mentioned problems, as shown in FIGS. A grip 13 with a fluid conduit 14,
The fluid conduit 1 is attached to one end of the grip 13.
4, a ball cock A having a ball valve 30 continuously rotatable about a direction perpendicular to the flow path of the fluid conduit 14 and a rotation for rotating the ball valve 30 of the ball cock A. A hook 33 mounted on the shaft 32 and having engaging holes 37 formed at intervals of approximately 90 degrees in the peripheral portion thereof, and a hook on a side opposite to the grip 13 with respect to the rotating shaft 32 of the ball cock A. A lever 40 having one end pivotally supported about an axis parallel to the moving shaft 32, a first spring 42 for urging the lever 40 in a direction in which the other end of the lever 40 is separated from the grip, and a first spring 42. A stop pin 43 for restricting a rotation range of the lever 40 so that the lever 40 is urged by the spring 42 so that the lever 40 is stopped together with the grip 13 in a substantially V-shape. To the hook 33 Comprising an engaging engagement pin 53 into the hole 37, the link member 50 pivotally supported at the other end to the lever 40
And the second spring 5 for urging the engaging pin 53 of the link member 50 in the direction of engaging with the engaging hole 37 of the hook 33.
2 is provided.

(Operation) When the lever 40 is in the position shown by the solid line in the figure, the force of the spring 52 causes the engagement pin 53 of the link member 50.
Is in contact with the outer peripheral edge of the hook 33. When the lever 40 is rotated from the position shown by the solid line in the drawing to the position shown by the broken line in the drawing, the engagement pin 53 engages with the engagement hole 37, and the hook 3
3 is pushed by the link member 50 and rotates counterclockwise in the figure. When the lever 40 reaches the position shown by the broken line in the figure, the hook 33 is rotated by approximately 90 degrees. Therefore, the ball valve 30 changes from the open state to the closed state or from the closed state to the open state.

Next, when the lever 40 returns from the position shown by the broken line in the drawing toward the position shown by the solid line in the drawing, the engaging pin 53 of the link member 50 causes the engaging pin 53 of the link member 50 to move by the force of the spring 52.
While tracing the peripheral portion of the above, it gets over the hook-shaped portion of the engagement hole 37 at the front of 90 degrees and reaches the position shown by the solid line in the figure. At this time, since the lever 40 is returned by the force of the spring 42, the opening / closing operation of the ball valve 30 can be performed with one hand.

(Embodiment) Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view of a one-hand operation type valve according to an embodiment of the present invention, and FIG. 2 is a sectional view of the same. This one-hand operation type valve is used, for example, in a liquid agent pressure-feeding device for applying a highly viscous liquid agent such as an adhesive, by inserting it in the middle of a liquid agent pressure-feeding channel. A fluid conduit 14 is fitted inside the grip 13. A ball cock A is attached to one end of the grip 13. This ball cock A is a ball valve 3 that constitutes a valve body.
0, and an inner tube 21 and an outer tube 22 that form a ball housing that houses the ball valve 30. On the outer peripheral surface of the front end portion of the outer tube 22, a male screw portion for coupling with the flow path is provided. A rotary shaft 32 of the ball valve 30 is provided on the side surface of the outer pipe 22.
The side hole portion 23 into which is inserted is projected. The inner peripheral surface of the rear end portion of the outer tube 22 is screwed to the outer peripheral surface of the front end portion of the inner tube 21. The inner peripheral surface of the rear end of the inner tube 21 and the outer peripheral surface of the front end of the fluid conduit 14 are screwed together. The outer peripheral surface of the rear end portion of the fluid conduit 14 and the inner peripheral surface of the front end portion of the coupling pipe 11 are screwed to each other.
On the outer peripheral surface of the rear end portion of the coupling pipe 11, a male screw portion for coupling with the flow path is provided. A hexagonal nut 12 is screwed onto the outer peripheral surface of the central portion of the coupling pipe 11, and the hexagonal nut 12 and the rear end of the outer pipe 22 abut on both ends of the grip 13, respectively. , 14, 21, 22 are connected to the grip 13.

A valve seat 24 is provided between the ball valve 30 and the inner pipe 21, and a valve seat 2 is provided between the ball valve 30 and the outer pipe 22.
5 are provided. The outer peripheral surface of the ball valve 30 has a valve seat 24.
And 25 are kept in surface contact. The valve seats 24 and 25 are provided with round holes that communicate with the inner pipe 21 and the outer pipe 22, respectively. Further, the ball valve 30 is provided with a through hole 31 having substantially the same sectional shape as the round hole. The ball valve 30 has an axis in a direction perpendicular to the through hole 31,
A rotating shaft 32 for rotating the ball valve 30 is connected. Two ring-shaped recesses for accommodating the O-ring 36 are provided on the outer peripheral surface of the rotating shaft 32.
A hook 33 is attached to the outer end of the rotating shaft 32 using a washer 34 and a hexagon nut 35. Engagement holes 37 are formed in the periphery of the hook wheel 33 at intervals of approximately 90 degrees.

The lever 40 is rotatably supported by a rotation shaft 41, and is urged clockwise by a spring 42 in the drawing. The range in which the lever 40 can rotate in the clockwise direction is restricted by the stop pin 43. When the lever 40 is pulled toward the grip 13 with a finger while holding the grip 13 in the palm of the hand, the grip 13 rotates to the position shown by the broken line in the figure.

The lever 40 is formed in a substantially V shape, and a link member 50 is pivotally supported by a rotating shaft 51 at a bent portion thereof. The link member 50 is biased by a spring 52 in the counterclockwise direction in the figure. The link member 50 is a hook 3
It is provided with two semi-circular plates which are arranged at positions such that they sandwich 3 from both sides with a slight gap, and an engagement pin 53 which connects the free end sides of the semi-circular plates. This engagement pin 53
Are engaged with the engaging holes 37 of the hook 33.

A latch piece 60 is pivotally supported on the lever 40 by a rotary shaft 61. The latch piece 60 is biased by a spring 62 in the clockwise direction in the figure. Lever 4 of the latch piece 60
An operating portion 65 of the latch piece 60 is provided on the outer side of 0, and a latch claw 64 is provided on the inner side of the lever 40 of the latch piece 60. Lever 4
When 0 reaches the position shown by the broken line in the drawing, the latch claw 64 of the latch piece 60 overcomes the force of the spring 62 and overtakes the latch pin 63, and then is engaged with the latch pin 63 by the force of the spring 62, and the lever 40 Latches so that it stops at the position indicated by the broken line in the figure. While holding the grip 13 in the palm of the hand, operate the operating portion 65 of the latch piece 60 with a finger,
When the latch piece 60 is rotated counterclockwise in the figure against the force of the spring 62, the latch claw 64 and the latch pin 63 are provided.
The lever 40 is returned to the position shown by the solid line in the figure by the force of the spring 42.

The base 44 is integrated with the outer tube 22 of the ball cock A, and includes the rotating shaft 41, the stop pin 43, and the latch pin 63.
Etc. are held by this base 44. Further, the lever 40 is formed in a substantially U-shaped cross section, and its pivot portion is mounted so as to straddle the outside of the base 44.

Instead of the hexagon nut 35, a cross-shaped direction indicating member is attached, and one of the vertical and horizontal lines of the cross is red,
The other is colored blue, and the valve is "open" when the blue line is in the flow direction, and the valve is "closed" when the red line is in the flow direction. By making it possible to grasp the open / closed state of the valve from the outside,
It is easy to use.

(Effect of the Invention) In the present invention, since the continuously rotatable ball valve is used as described above, it is possible to make the opening operation direction and the closing operation direction of the ball cock the same. It was possible to realize a ball cock that can be operated with one hand, and when the grip is pulled to the lever, the rotation axis of the ball valve is rotated and the lever is returned by the spring. Since the rotation axis of the ball valve is not rotated, the restoring force of the spring may be small,
Therefore, it is possible to reduce the load when operating the lever against the force of the spring.

Further, since the fluid conduit is provided inside the grip, and the lever has a stop pin that restricts the rotation range of the lever so that the lever stops in a substantially V-shape with the grip, There is an advantage that the valve that can be operated by one hand can be provided in a compact form by using the gripping force to pull the lever toward the grip while using the valve as a flow path.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention, and FIG. 2 is a vertical sectional view of the same. 13 is a grip, 14 is a fluid conduit, 30 is a ball valve, 3
Reference numeral 2 is a rotary shaft, 33 is a hook, 37 is an engaging hole, 40 is a lever, 42 is a spring, 50 is a link member, 52 is a spring, and 53 is an engaging pin.

Claims (1)

[Scope of utility model registration request] 1. A grip having a fluid conduit therein, and a grip attached to one end of the grip to communicate with the fluid conduit,
A ball cock having a ball valve continuously rotatable about a direction perpendicular to the flow path of the fluid conduit, and a rotary shaft for rotating the ball valve of the ball cock, the ball cock being mounted on the peripheral part of the ball cock. A hook wheel having engagement holes formed at intervals of 90 degrees,
A lever whose one end is pivotally supported at a portion opposite to the grip with respect to the pivot shaft of the ball cock about a direction parallel to the pivot shaft, and the other end of the lever is separated from the grip. A first spring for urging the lever, and a first spring
A stop pin for restricting the turning range of the lever so that the lever is urged by the spring to stop the lever together with the grip in a substantially V-shape.
A link member having one end provided with an engagement portion engageable with the engagement hole of the hook and the other end pivotally supported by a lever, and the engagement portion of the link member engaged with the engagement hole of the hook. The second to urge in the direction
A one-hand operation type valve characterized by comprising a spring of.