JPS607924Y2 - air supply equipment - Google Patents

Description

[Detailed description of the invention] The present invention relates to an air supply tool, and when supplying air to tires, etc., the supply operation is performed while detecting the air pressure supplied to the tire, and in the process of the operation, excessive air pressure may be applied. This relates to an adjustable air supply device.

The structure of conventional air supply devices has an internal check valve to prevent the pressure in the filling part, for example, the pressure inside the tire, from returning. This caused the inconvenience of having to remove the internal pressure and measure it, and if it was found to be insufficient, it had to be reattached and refilled.

This invention was devised in view of the above-mentioned problems and in order to solve them.It is a new air supply device that can smoothly check the pressure regulation of the filling section and supply air efficiently. The purpose is to provide.

Hereinafter, the present invention will be described in detail according to illustrative embodiments.

A denotes a pressure regulating section of the air supply tool B, in which a pressure detection valve a and a pressure regulating valve b are arranged close to each other along the substantially axial direction.

The pressure detection valve a is provided at a rear portion of the bed 1 where the first main body cylinder 2 is fitted, and includes a valve chamber 3 formed in the bed 1 and an annular groove 4 formed in the outer periphery of the iron cylinder 2. A passage 5 connecting the valve chamber 3 is constructed so that it can be opened by a valve 6 in the valve chamber 3.

The annular groove 4 is connected to the inner cavity of the iron cylinder 2 via a passage 7.

The pressure regulating valve b is provided in the rear part of the bed 1 where the first main body cylinder 2 is fitted and in the front part near where the above-mentioned pressure detection valve a is provided, and is opened in the bed 1. A passage 10 connecting the valve chamber 8 and an annular groove 9 formed on the outer periphery of the iron cylinder 2 is configured to be opened by a valve 11 in the valve chamber 8.

The annular groove 9 communicates with the outside of the bed 1 through a passage 12, into which a pipe (not shown) for introducing high-pressure air is fitted.

13 is a passage that communicates the valve chamber 3 and the valve chamber 8.

A second main body cylinder 14 is fitted in the front of the first main body cylinder 2, and a valve chamber 15 is formed in the inner cavity of the fitted part. It passes through the inner cavity of the main body cylinder 14, and its tip 17a faces the mouth receiving portion C at the tip of the air supply tool B.

The second main body cylinder 14 is connected to the bed 1 with an operating cover 18 interposed therebetween.
is fitted in.

An operation adjustment valve d for operating the pawl 19 of the mouth holder C is provided at the front portion of these three valves close to the valve chamber 15.

A valve chamber 20 provided in the droplet 14 of the valve d communicates with the lumen 21 of the droplet 14 by a passage 22, and the valve chamber 20 communicates with an air reservoir 23 by a passageway 24.

Note that 25 is a coil spring for retracting the operating cover 18;
26 is a coil spring that moves the valve stem 17 forward.

Next, the main functions of the pressure regulating section A configured as described above will be explained in conjunction with the air supply device B as follows.

First, the tip 17a of the valve rod 17 facing the front end of the air supply tool B is inserted into the air introduction pipe 27 at the front of the tire valve and pressed.

At this time, the end surface of the air introduction pipe 27 comes into contact with the front end of the mouth rubber 29 located at the front end of the air passage 28, and the air introduction pipe 27
The end of the inner worm and the front end 17a of the valve stem 17 come into contact and push against each other, causing both the worm and the valve stem 17 to move back, and the valve 16 to open.

High pressure air is then supplied into the tire from the passage 12.

That is, the high-pressure air passes from the passage 12, through the annular groove 9 and the passage 10, pushes up the valve 11, and from the valve chamber 8 passes through the passage 13, reaches the valve chamber 3, pushes up the valve 6, and pushes up the valve 6. 7 to reach the inner cavity of the first main body cylinder 2, and is supplied from the valve chamber 15 through the air passage 28 into the tire.

A portion of the high-pressure air guided to the ventilation passage 28 is supplied to the air reservoir 23 through the passage 22, the valve chamber 20, and the passage 24, expanding the air reservoir 23 and simultaneously advancing the actuating lever 23.
The claws 19 are clamped through the chuck holder 32 to clamp the outer peripheral surface of the air introduction pipe 27.

When high-pressure air is supplied and filled into the tire in this manner, the internal pressure increases, and this state is measured by a pressure gauge (not shown) provided near the pressure detection valve a.

When the internal pressure exceeds the predetermined pressure, the pressure regulating valve b
By pressing down and closing the valve 11, the high pressure air supplied from the passage 12 is cut off.

In this way, when the supply to the tire is finished, the operation adjustment valve d is pushed down, the air in the valve chamber 20 is released from the passage 30 to the outside air side, and the operation cover is returned to its original position.
The internal pressure of the pawl 19 is released by the link spring 31, and the pawl 1
9, and remove the air supply tool B.

As mentioned above, in this invention, a pressure regulating valve that regulates the air pressure supplied is installed near the pressure detection valve, so you can adjust the valves as appropriate with the fingertips of one hand, and while looking at the pressure gauge, This has the advantage that air at a certain pressure can be supplied smoothly and efficiently.

[Brief explanation of the drawing]

The accompanying drawing is a longitudinal sectional view of an air supply device in which the present invention can be implemented. A...Pressure adjustment part, B...Air supply device, a
......Pressure detection valve, b...Pressure regulating valve, 1...Bed, 2...Cylinder body.

Claims (1)

[Scope of utility model registration request] A slidable operating cover is provided on the outer periphery of the main body cylinder, an inclined surface is formed on the inner surface of the front end of the operating cover, and a claw in the shape of a divided ring is brought into contact with the inclined surface under pressure, and is provided inside the valve chamber. The valve stem integrated with the valve passes through the inside of the main body cylinder and its tip is positioned near the claw, forming an air reservoir in the space between the outer surface of the main body cylinder and the operating cover, and branching this air reservoir from the ventilation path. What is claimed is: 1. An air supply device that communicates with a passageway and is provided with a check valve in a branch passageway, characterized in that a pressure regulating valve for regulating the air pressure supplied is disposed in the vicinity of a pressure detection valve.