JPH09315114A - Valve core connecting and disconnecting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely pinch a head of a valve core by inserting a barrel part for holding a tool for rotation and a stopper for holding the tool for rotation into a holder part. SOLUTION: Before installing a valve core connecting and disconnecting tool in a valve core 13, a barrel part 2 thereof is drawn to a stopper 3 side so as to open a stopper 9. A tip of a holder part 1 is lightly pushed to the valve core 13, and a shaft 15 of the valve core 13 is inserted into a shaft pinching hole 7 through a shaft constraining hole 6. The barrel part 2 is slid in the direction of the tip of the holder part 1 so as to narrow a slit 9. As a result, the shaft constraining hole 6 of the holder part 1 securely pinches the shaft 15 of the valve core 13, and the shaft pinching hole 7 securely pinches the tip of the shaft 15 of the valve core 13. Thereafter, the barrel part 2 or the stopper 3 of the valve core connecting and disconnecting tool is turned so as to connect or disconnect the valve core 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool for easily and surely attaching / detaching a valve core screwed to a tire valve of an automobile.

[0002]

2. Description of the Related Art Conventionally, when attaching or detaching a valve core screwed to a tire valve of an automobile, a valve core rotation 11 at the head of a valve cap 10 as shown in FIG.
Or using a valve core attachment / detachment tool or valve core driver that has a similar mechanism.

[0003]

However, with the above tool, the head of the valve core is merely sandwiched and cannot be reliably gripped. Therefore, when the valve core is attached to or detached from the tire valve, the valve core often comes off or falls from the tool. In particular, in the outer tire of the double tire of the rear wheel of a truck or bus, the tire valve faces inward, and the tire wheel and the tire valve are close to each other. For this reason, the work space is very narrow, and it is difficult for the hands themselves to enter, making the work extremely difficult.

The tires of trucks and buses have a much higher air pressure than tires of general passenger cars.
For this reason, the air in the tire was blown out strongly from the tire valve during the work, and it was difficult to even hold the valve core on the tool. Moreover, the valve core was often blown away by air and lost. The present invention has been invented to solve these problems.

[0005]

As shown in FIG. 1, a tire valve attaching / detaching tool of the present invention comprises a holder portion 1, a body portion 2 and a stopper 3. The tip of the holder part 1 is
It comprises a shaft holding hole 6 for securely holding the shaft of the valve core, a shaft holding hole 7 for holding the tip of the valve core shaft, and a head holding piece 8 for holding the head of the valve core. Each of these parts is divided into two pieces by a slit having an appropriate interval, and a spring hole 5 at the end of the slit has an appropriate elasticity.
The body 2 and the stopper 3 are inserted into the holder 1, and the pin 16 is inserted into the stopper 3 and the pin hole 4 of the holder 1.
The holder part 1 and the stopper 3 are fixed by penetrating into. The tip of the holder part 1 has a diameter slightly larger than that near the center and is tapered.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The valve core attaching / detaching tool of the present invention is
As shown in FIG. 3, the body 2 is not attached to the valve core 13 before mounting.
Is pulled to the stopper 3 side and the slit 9 is left open. Then, the tip of the holder part 1 is lightly pressed against the valve core 13 and slightly rotated left and right (maximum 90 °).
The shaft 15 of the valve core 13 passes through the shaft holding hole 6 and penetrates into the shaft holding hole 7. Then, the head 14 of the valve core 13 is sandwiched by the head holding pieces 8 of the holder portion 1. Next, when the body 2 is slid toward the tip of the holder 1, the slit 9 is narrowed because the tip of the holder 1 is slightly thicker in diameter than the center and tapered. As a result, the shaft holding hole 6 of the holder 1 securely grips the shaft 15 of the valve core 13, the shaft holding hole 7 surely holds the tip of the shaft 15 of the valve core 13, and the head holding piece 8 holds the head of the valve core 13. You will definitely grasp 14. In this state, by turning the body portion 2 or the stopper 3, the holder portion 1 is also turned and the valve core 13 can be attached and detached.

[0007]

Embodiments of the present invention will be described with reference to the drawings. FIG. 3 is a side view showing a state where the valve core attaching / detaching tool of the present invention is inserted into a tire valve. The holder portion 1 of the valve core attaching / detaching tool is lightly pressed against the head 14 and the shaft 15 of the valve core 13 screwed to the tire valve 12. At this time, the body 2 is pulled toward the stopper 3. Rotate the stopper 3 slightly to the left and right (up to 90
The shaft 15 of the valve core 13 is held by the holder portion 1.
It penetrates into the shaft holding hole 6. And head 1 of the valve core 13
4 is set so as to engage with the head holding piece 8 of the holder portion 1. At the same time, the shaft 15 of the valve core 13 is attached to the holder 1
It is set so that it can also be meshed with the shaft holding hole 7.

From such a state, the valve core attaching / detaching tool of the present invention shown in FIG. 4 is inserted into a tire valve, and the holder is held to hold the valve core head and shaft by sliding the body. As shown in the side view, the body portion 2 of the valve core attaching / detaching tool is slid toward the tip of the holder portion 1. Then, since the tip of the holder part 1 is slightly thicker than the center and has a tapered shape, the slit 9 is narrowed, and the shaft holding hole 6 of the holder part 1 securely grips the shaft 15 of the valve core 13, The gripping hole 7 reliably grips the tip of the shaft 15 of the valve core 13, and the head gripping piece 8 securely grips the head 14 of the valve core 13. Therefore, the valve core 13 is securely held by the valve core attachment / detachment tool and never comes off. In this state, by turning the body portion 2 or the stopper 3 of the valve core attaching / detaching tool, the holder portion 1 is also turned and the valve core 13 can be attached / detached. When removing the valve core 13 from the tire valve 12 or inserting it into the tire valve 12, the valve core attaching / detaching tool securely holds the valve core 13 so that the valve core attaching / detaching tool comes off the valve core attaching / detaching tool or is blown away by the intense air in the tire. It is possible to work easily and reliably with one hand, without getting tired.

When the work is completed, the body portion 2 of the valve core attaching / detaching tool is slid again toward the stopper 3 side. Then, the slit 9 of the holder portion 1 is opened as it is, the shaft holding hole 6 opens the shaft 15 of the valve core 13, and the shaft holding hole 7 and the head holding piece 8 are simply attached to the shaft 15 and the head 14 of the valve core 13. It will just be in mesh. Therefore, the valve core attaching / detaching tool can be easily detached from the valve core 13.

The valve core attachment / detachment tool of FIG. 1 has a shorter overall length so that the valve core of the outer tire of the double tire of the rear wheel of a truck or bus can be easily attached / detached. It may be longer depending on the type. Further, the body portion 2 and the stopper 3 are in the shape of a hexagonal column, but may be in other shapes such as a column.

[0011]

As described above, when the valve core attaching / detaching tool of the present invention is used when attaching / detaching the valve core screwed to the tire of the automobile, the valve core can be held by the attaching / detaching tool itself. It never falls. Therefore, work can be performed easily and reliably with one hand, and workability is dramatically improved. Further, even when used in a tire having a high air pressure such as a truck or a bus, it is possible to prevent the tire valve from being scattered or lost due to the intense air in the tire.

[Brief description of drawings]

FIG. 1 is a sectional view (a) and a front view (b) of a valve core attaching / detaching tool of the present invention.

FIG. 2 is a side view (a) and a front view (b) of a conventional valve cap.

FIG. 3 is a side view showing a state where the valve core attaching / detaching tool of the present invention is inserted into a tire valve.

FIG. 4 is a side view showing a state in which the valve core attaching / detaching tool of the present invention is inserted into a tire valve, and the head and shaft of the valve core are held by the holder by sliding the body.

[Explanation of symbols]

 1 Holder Part 2 Body Part 3 Stopper 4 Pin Hole 5 Spring Hole 6 Shaft Holding Hole 7 Shaft Holding Hole 8 Head Holding Piece 9 Slit 10 Valve Cap 11 Rotating Valve Core 12 Tire Valve 13 Valve Core 14 Head 15 Shaft 16 Pin

Claims (1)

[Claims] 1. A shaft holding hole (6), a shaft holding hole (7), a head holding piece (8), a spring hole (5) as a spring mechanism, and a slit (9) for holding the valve core. The holder part (1) having the above-mentioned means is inserted with a body part (2) for gripping and rotating the tool, and a stopper (3) for preventing the body part (2) from falling off and gripping and rotating the tool. A valve core attachment / detachment tool characterized by