JP3423914B2 - Equipment for filling tires - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is suitable for filling tires of automobile wheels, particularly large-sized vehicle wheels with air or nitrogen gas, and also for tires of small-sized or medium-sized vehicle wheels with air or nitrogen gas. The present invention relates to a tire filling device that can be used to fill a tire.

[0002]

2. Description of the Related Art Generally, pneumatic tires are used for automobile wheels, and the compressed air or compressed nitrogen gas is filled in these tires by an air valve attached to a rim or a tube of the wheel.

An example of the structure of these air valves is shown in FIG.

That is, in the air valve a, a valve body b having a threaded portion inside is provided at the tip of a pipe attached to a rim or a tube, and inside the valve body b is a valve core c commonly known as a bug. It is screwed and formed airtight.

Incidentally, d is a cap that covers the valve body b.

FIG. 12 is a detailed view of the valve core c.

That is, the valve core c has a valve seat portion e having a threaded portion f, a valve rod g inserted through the center of the valve seat portion e, and a spring h, and the valve rod g is a head. The inner valve n is abutted against the valve seat portion e by the elastic force of the spring h. , Keep it airtight.

When the tire is filled with air or nitrogen gas, first, the cap d is removed from the air valve a, and then the air chuck of the conventional tire filling device is pressed against the air valve a. The conventional air chuck has a protrusion at the center of the air supply port, and the protrusion is at the center of the air valve a.
Of the valve seat g as it abuts against the head of the valve and pushes down the valve rod g against the elastic force of the spring h.
From the air chuck, high-pressure air from the air chuck passes around the valve rod g, enters the air valve a through the valve gap,
The tire is filled.

[0009]

However, since the valve gap at the time of opening the valve is extremely narrow and the air flow path around the valve rod g is also narrow, it has a large capacity, especially for tires of large vehicles. A tire having a high set pressure has a problem that it takes a long time to fill with air or nitrogen gas and is defective.

For this reason, in the case of filling a tire of a large vehicle, the valve core c is removed from the air valve a to increase the hole diameter of the air valve a, and air is supplied into the tire quickly after the valve core is supplied. A method of screwing c into the air valve a is partially performed.

However, in this method, since the valve core c is screwed in against the ejection of high-pressure air, skill is required and there is a safety problem.

It is an object of the present invention to solve these problems and to provide a tire filling device which shortens the tire filling time of a large vehicle and is excellent in safety.

[0013]

In order to achieve the above object, the present invention is a tire filling apparatus for filling an automobile wheel having an air valve with air or nitrogen gas, having a bent portion in the middle of the main body. Formed in a tubular body, a chucking means for the air valve is provided at one end of the flow path of the tubular body, and the other end of the flow path is connected to a pipe line connected to a supply source of air or nitrogen gas, A valve core rotation driving means screwed into the air valve and a bulging portion of a valve rod head in the center of the valve core are detachably engaged with the bent portion of the flow path. And a gripping means for gripping the valve core.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a first embodiment of the present invention.
It will be described with reference to FIG.

FIG. 1 is a tire filling apparatus 1 according to this embodiment.
2 is a partially cutaway front view of the main body, and the main body has a T-shape having an L-shaped flow passage 2d communicating with one of the horizontal pipe portion 2a and the vertical pipe portion 2c and an extension flow passage 2f branched from the bent portion 2e. And a fitting hole 2b into which a head of an air valve 10 described later is fitted, and an air valve fitted into the fitting. A chucking means for the air valve 10 is formed by including a stopper mechanism 3 for locking the head of the air valve 10.

That is, the stopper mechanism 3 has a claw portion 3 at the tip of a lever 3a rotatably supported by the T-shaped tubular body 2.
b, and the air valve 10 fitted in the fitting hole 2b.
The claw portion 3b is engaged with a threaded portion on the outer circumference of the head of the head, and the claw portion 3b is constantly pressed toward the threaded portion by the elastic force of the spring 3c so that the air valve 10 is fitted into the fitting hole 2b. It is locked so that it will not come off.

The bottom of the fitting hole 2b is formed flat.

The extension flow path 2 at the location of the other lateral pipe portion 2g
An elongated rod-shaped valve tool 4 is installed at the tip of f so as to pass through the lateral tube portion 2g.

The valve tool 4 is axially supported by a bearing 5 so that it can slide in an airtight manner.

The valve tool 4 has both a rotation driving means for the valve core 11 and a gripping means for holding the valve core 11, which will be described later.

That is, at the tip of the valve tool 4, as shown in FIGS. 2 and 3, a bifurcated driver 4a for rotationally driving the valve core 11, and a head portion of the valve rod 11a at the center of the valve core 11. And a chuck mechanism 4Z that inserts the bulged portion 11c into the shaft hole 4b to sandwich it.

The chuck mechanism 4Z presses these balls 4d into the shaft hole 4b, and a plurality of balls 4d which are installed on the inner wall of the shaft hole 4b so that the tips thereof can move forward and backward. It consists of spring 4c.

The balls 4d and the ridges 4c are installed in a groove 4e provided in the outer peripheral portion of the valve tool 4, and the groove 4e is formed in such a manner that the head of the valve rod 11a is aligned with the shaft hole 4b. When fitted, the position of the neck root of the bulging portion 11c of the head and the position of the groove 4e are arranged so as to exactly overlap each other.

The flow path 2 of the vertical tube portion 2c of the T-shaped tubular body 2
A pipe line 6 made of a flexible rubber hose is connected to the tip of d, and the pipe line 6 is connected to a supply source of compressed air or nitrogen gas via a three-way valve 7.

Reference numeral 8 is a joint to the supply source of the compressed air or nitrogen gas.

Next, the usage and operation of this embodiment will be described.

FIG. 4 shows a state in which the tire filling device 1 of the present embodiment is mounted on the air valve 10 of the wheel of an automobile.

That is, first, the air valve 10 with the cap removed is inserted into the fitting hole 2b with the lever 3a pressed down against the elastic force of the spring 3c, and the top of the air valve 10 is the bottom of the fitting hole 2b. Abutting against.

When the pushing down of the lever 3a is stopped, the lever 3a operates so as to push the claw portion 3b at the tip end against the air valve 10 by the elastic force of the spring 3c.

A threaded portion for screwing a cap is formed on the outer periphery of the air valve 10, and the claw portion 3b engages with the threaded portion to separate the tire filling device 1 from the air valve 10. Tie it so that it doesn't exist.

A valve core 11 as shown in FIG. 5 is screwed into the inside of the air valve 10, and a pair of locking projections 11b is provided at the upper end of the valve core 11 so as to project therefrom.

The valve tool 4 installed in the tire filling device 1 attached to the air valve 10 is lowered, and the bifurcated driver 4a provided at the tip of the valve tool 4 is engaged with the locking projection. 11f, handle 4f
By rotationally driving the valve core 11, the threaded valve core 11 can be pulled out from the air valve 10.

When the valve tool 4 is lowered, the bulging portion 11c of the valve rod 11a in the central portion of the valve core 11 is fitted into the shaft hole 4b of the valve tool 4 and is attached to the valve tool 4. Since the chuck mechanism 4Z that holds the neck portion of the bulging portion 11c is operated by the action of the ball 4d and the spring 4c that are installed, the valve core 11 is removed from the valve tool 4 even after the valve core 11 is extracted from the air valve 10. It does not come off.

Thus, the air or nitrogen gas remaining in the tire (not shown) flows back into the tire filling device 1, so the cock of the three-way valve 7 is opened as necessary to release these residual gases. can do.

Next, compressed air or nitrogen gas can be supplied through the pipe line 6 at a predetermined pressure to fill the tire with a predetermined pressure in a short time.

After that, the valve tool 4 is lowered again, the handle 4f is rotationally driven to screw the valve core 11 to the air valve 10, and the lever 3a is pushed down to remove the tire filling device 1 from the air valve 10. The tire filling work is completed.

The chuck mechanism that holds the bulging portion 11c by its neck portion and releasably engages the valve rod 11 can adjust the holding force by adjusting the elastic force of the spring 4c. can do.

A second embodiment of the present invention will be described with reference to FIG.

The tire filling device 1'of this embodiment is
The method of mounting the air valve 10 is different from that of the tire filling device 1 of the first embodiment.

That is, in the second embodiment, the air valve 1
The attachment to 0 was performed by a cap nut 12 provided at one end of the lateral tube portion of the T-shaped tubular body 2 '.

That is, the cap nut 12 is a T-shaped tubular body 2 '.
Is rotatably attached to one end of the horizontal bar of the
A is formed in a hexagonal shape and can be rotationally driven by a spanner or the like, and internally has a screw portion 12b that engages with a screw portion on the outer periphery of the air valve 10.

By removing the cap of the air valve 10 and screwing the tire filling device 1 ′ with the cap nut 12, high pressure air or nitrogen is applied to the tire in the same procedure as in the first embodiment. It can be filled with gas.

A third embodiment of the present invention will be described with reference to FIGS.
Will be described.

The tire filling apparatus 1 ″ according to the third embodiment shown in FIG. 7 has a structure in which the head portion of the valve rod of the air valve is pressed against the tire filling apparatus 1 shown in the first embodiment. The connection body 13 as a means is attached.

FIG. 8 shows a vertical sectional view of the connector 13.

That is, the connecting body 13 has a tubular body portion 13a.
13b of the air valve 10 is formed into a structure having the same screw as the head 10a of the air valve 10, and the other end thereof has a fitting hole 13c into which the head 10a of the air valve 10 can be fitted. A projecting portion 13d is axially projected at the center of the.

The end surface of the protrusion 13d is formed as a concave surface having a spherical recess.

Further, there is a center hole 13e on the side of the one end 13b of the main body 13a, and the center hole 13e is a communication hole 13f.
Through the fitting hole 13c.

Next, the usage and operation of the third embodiment will be described.

Tire filling device 1 '' according to the present embodiment
Is used to fill the tire with air or nitrogen gas without removing the valve core 11 from the air valve 10 of the vehicle wheel.

That is, when the tire filling device 1 according to the first embodiment is used for filling a tire having a small capacity such as a tire of a passenger car or a small car, the tire filling device 1 is used.
Air valve 1 with connection body 13 attached and cap removed
If the fitting hole 13c of the connecting body 13 is pressed from above and pressed, the protruding portion 13d presses the bulging portion 11c at the center of the air valve 10 and pushes down the valve rod 11a.
High pressure air or nitrogen gas supplied through the tire is injected into the tire.

Since the end surface of the protrusion 13d is formed as a concave surface having a spherical recess, the bulging portion 11 is formed.
The contact with c is performed smoothly.

By thus attaching the connecting body 13 as an attachment, the tire filling device 1 according to the first embodiment or the tire filling device 1 ′ according to the second embodiment can be used in passenger cars or It can be used for small cars in the same manner as the conventional tire filling device.

FIG. 9 and FIG. 1 show the fourth embodiment of the present invention.
This will be described with reference to 0.

Also in this embodiment, a pressing means for pressing the head portion of the valve rod of the air valve is attached to the tire filling device 1 or 1 ', and the pressing means of this embodiment has a cylindrical shape. The rod-shaped body 14 is used.

A protruding portion 14b of the same shape as the protruding portion 11c of the valve rod 11a is projected at one end of the rod-shaped body 14, and a spherical recess is formed at the other end 14c of the rod-shaped body 14. A concave surface having is formed.

The rod-shaped body 14 is the tire filling device 1 described above.
It is inserted into the T-shaped tubular body 2 through the fitting hole 2b and attached to the valve tool 4.

FIG. 10 is a partially cutaway front view of the tire filling device 1 '''according to the fourth embodiment.

That is, in the tire filling device 1 ''', the bulging portion 14b at one end of the rod 14 is sandwiched between the chuck mechanism 4Z at the tip of the valve tool 4 and the rod 14 is held. There is.

Tire filling device 1 of the fourth embodiment
"" Is also used to fill the tire with air or nitrogen gas without removing the valve core 11 from the air valve of the wheel of the automobile.

That is, the fitting hole 2b is engaged with the air valve 10 with the cap removed, the valve tool 4 is lowered, and the lower end 14c of the rod-shaped body 14 is the bulged portion 11 at the center of the air valve 10.
When c is pressed and the valve rod 11a is pressed down, the high pressure air or nitrogen gas supplied through the pipe 6 causes the rod-shaped body 14 to move.
Is injected into the tire through a gap 15 between the side surface of the tire and the inner surface of the tubular body 2.

By thus attaching the rod-shaped body 14 as an attachment, the tire filling device 1 according to the first embodiment or the tire filling device 1 ′ according to the second embodiment can be used for passenger cars and small cars. On the other hand, it can be used in the same manner as a conventional tire filling device.

Although the main body is formed into a T-shaped tubular body in any of the above-described embodiments, the main body is formed into a tubular body having a bent portion in the middle such as a dogleg shape or an L shape. The tubular body is provided with the chucking means at one end of the flow path, and the other end of the flow path is connected to a pipe line connected to a supply source of air or nitrogen gas, and a bent portion of the flow path is formed. A rotation driving means and a gripping means for the valve core may be provided at the position.

Further, a branched flow path is formed from a bent portion of the flow path of the V-shaped tubular body, and a substantially Y-shaped flow path is formed by the branched flow path and the flow path. A rotation driving means and a gripping means for the valve core may be provided at a location of the passage. Further, if a tire internal pressure measuring pressure regulator is connected to the supply side of the joint 8 to the compressed air or nitrogen gas supply source of this apparatus, highly accurate air or nitrogen gas supply can be performed in a short time.

Furthermore, the other end 2h of the flow passage of the tubular body 2 or 2'is formed into a structure having the same screw as the head portion 10a of the air valve 10 to form an air chuck of a conventional tire filling device. The other end portion 2h may be locked.

[0066]

As described above, according to the present invention, since the valve tool provided in the tire filling device can safely attach and detach the valve core inside the air valve, the high pressure and large capacity particularly in a large vehicle. The effect of being able to safely fill air or nitrogen gas in a short time even for the tires of the above, and to fill the tires in the same manner as in the conventional method even for small cars by adding an attachment Have.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a tire filling device according to a first embodiment of the present invention.

FIG. 2 is a partially cutaway front view of a valve tool portion of the above tire filling device.

3 is a bottom view of the valve tool section shown in FIG. 2. FIG.

FIG. 4 is a partially cutaway front view showing a usage state of the first embodiment.

FIG. 5 is a front view showing an example of a valve core used in an air valve.

FIG. 6 is a partially cutaway front view of the second embodiment of the tire filling device of the present invention.

FIG. 7 is a partially cutaway front view of a third embodiment of the tire filling device of the present invention.

FIG. 8 is a vertical cross-sectional view of the partially connected body according to the third embodiment.

FIG. 9 is a perspective view of a partially rod-shaped body of a fourth embodiment of the tire filling device of the present invention.

FIG. 10 is a partially cutaway front view of the fourth embodiment.

FIG. 11 is a vertical cross-sectional view of an example of the structure of an air valve.

12 is a detailed front view of a valve core used in the air valve shown in FIG.

[Explanation of symbols]

1, 1 ′, 1 ″, 1 ′ ″ Tire filling device 2, 2 ′ Tubular body 3 Stopper mechanism 3b Claws 3c, 4c Spring 4a Rotation drive means (bifurcated driver) 4b Shaft hole 4d Ball 4Z Grasping means (Chuck mechanism) 6 conduit 7 three-way valve 10 air valve 11 valve core 11a valve rods 11c, 14b bulge 13 connection 13b protrusion 14 rod 14a groove

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Open 59-187553 (JP, U) Open 60-184706 (JP, U) Open 59-74071 (JP, U) Open 50- 109904 (JP, U) Actual development Sho 54-47704 (JP, U) Actual public 35-3101 (JP, Y1) Actual public 35-22393 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) B60S 5/04

Claims (12)

(57) [Claims] 1. A tire filling device for filling an automobile wheel having an air valve with air or nitrogen gas, wherein a main body is formed into a tubular body having a bent portion in the middle, and one end of a flow path of the tubular body is formed. Is provided with a chucking means for the air valve, and a pipe line connected to a supply source of air or nitrogen gas is connected to the other end of the flow passage, and a bent portion of the flow passage is screwed into the air valve. A rotation driving means for the valve core attached thereto, and a gripping means for detachably engaging the valve core head bulging portion at the center of the valve core and gripping the valve core. A device for tire filling. 2. The main body is formed into a substantially T-shaped or substantially Y-shaped tubular body, one end of a lateral pipe portion of the tubular body is formed at one end of the flow path, and a vertical pipe of the tubular body is formed. 7. A distal end of the flow path is formed at the other end of the flow path, and the rotation driving means and the gripping means are provided at the front end of the branch extension flow path of the bent portion of the flow path. The tire filling device according to 1. 3. The method according to claim 1, wherein a three-way valve is provided in the middle of a pipe line connected to the air or nitrogen gas supply source to form a structure capable of discharging residual air in the tire. The tire filling device according to item 2. 4. The tire filling device according to claim 1 or 2, wherein the chucking means includes a stopper mechanism that can be engaged with and held by the air valve. 5. The stopper mechanism has a claw portion that engages with a threaded portion existing on the outer periphery of the air valve, and a protrusion that presses the claw portion toward the threaded portion of the air valve. The tire filling device according to claim 4, wherein 6. The expansion means is capable of fitting the bulging portion of the head portion of the valve rod with a predetermined pressing force and pulling the fitted bulging portion with a predetermined pulling force. The tire filling device according to claim 1 or 2, further comprising an outlet chuck mechanism. 7. The bulging part chuck mechanism includes a shaft hole into which the bulging part can be inserted, a plurality of balls installed on an inner wall of the shaft hole such that a tip part of the bulging part is protruded so as to be able to advance and retract, 7. The tire filling device according to claim 6, further comprising: a ridge that presses the ball toward the inside of the shaft hole. 8. The tire filling device according to claim 1, wherein a pressing means for pressing the head portion of the valve rod of the air valve is detachably attached. 9. The pressing means is a connecting body composed of a tubular main body portion and a projecting portion protruding in the axial direction of the center of the main body portion, and one end of the connecting body can be attached to and detached from the chucking means. Has a fitting hole into which the head portion of the air valve can be fitted, and the protruding portion is formed when the head portion of the air valve is fitted into the fitting hole. 9. The tire filling device according to claim 8, wherein the device is formed in a structure that presses the head portion of the valve rod at the center of the air valve. 10. The end surface of the protruding portion of the connector is formed into a concave surface having a spherical recess.
The device for tire filling according to. 11. The pressing means comprises a rod-shaped body which is inserted into the tubular body through an insertion hole at a location of the chucking means, and one end of the rod-shaped body expands a head portion of the valve rod. 7. A bulging part having the same shape as the projecting part is projected, and the end face of the other end of the rod-shaped body is formed into a concave surface having a spherical dent, or claim 1 or claim 6 or claim 8. The device for tire filling according to. 12. The tire filling device according to claim 1, wherein the other end of the flow path of the tubular body is formed in a structure having a screw similar to that of the head portion of the air valve.