JPS5941843Y2 - Chewless tire inflation device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an air injection device for tubeless tires.

This type of device has been researched and technologically developed with the main goals of shortening the air injection time and shortening the cycle time.

Therefore, equipment to supply a large capacity of compressed air is inevitably required, and the operation of the air injection device itself is complicated and the structure must be complicated, resulting in high manufacturing costs and maintenance. It also has the disadvantage of being difficult to manage.

This idea aims to develop a device that is in line with recent trends in the field, where the demand for low-cost devices is increasing, and is easy to handle and does not require skilled technology. The purpose of this invention is to further improve the versatility of the device and to solve the drawbacks of the conventional device described above.

The gist of the tubeless tire inflation device of the present invention for achieving this purpose is that the inner diameter is equal to the inner diameter of the concave part where the center of the wheel rim is depressed, and the outer diameter is beyond the bead part of the tubeless tire. Further, a pneumatic tube attached to a pair of upper and lower members whose dimensions are set so as to extend to the side wall and configured such that at least the lower part moves up and down is held in a predetermined position by a positioning pin inserted into the wheel center hole. By pressing both sides of the set tubeless tire, the area from the outer surface of the flange of the wheel rim to the side wall of the tubeless tire is kept airtight, and compressed air is injected from the air inlet of the tire using a nozzle. be.

Next, the configuration of this invention will be explained with reference to illustrated embodiments.

FIG. 1 shows an overall side view, in which 1 is a tire to which a wheel 2 (see FIG. 3 described later) is assembled;
2 is a conveyor for conveying the tire 1, and in this embodiment, as shown in the plan view of FIG. and a tire regulating conveyor section 3d.

And each conveyor part 3a-3d is roller 4...
A free roller conveyor is used in which multiple rollers are arranged in parallel and rotatably supported.

Further, the central conveyor section 3a is provided with a cutout portion P where no rollers 4 are present at a suitable location in the conveyance direction A, and a tire stopper 5 is provided which can freely rise and fall from the cutout portion P toward the conveyance direction side.

This stopper 5 is attached to a fluid pressure cylinder 7 provided on a frame 6 of the air injection device.
By expanding and contracting, the posture is changed to a standing position, and the tire 1 being conveyed on the conveyor 3 is positioned exactly at the cutout portion P.
Stop at the position.

Note that the tire 1 can also be stopped manually by the operator, in which case the stopper 5 and the cylinder 7 are unnecessary.

Reference numeral 8.9 is a plate-shaped member provided above and below the cutout portion P forming a part of the conveyor conveyance surface, and is a plate-like member provided above and below the cylinders 10 and 11 provided on the frame 6, respectively. Rod 10a.

11a, and is configured to move up and down by the expansion and contraction operations of cylinders io and 1i.

In addition, tubes 12 and 13 of automobile tires, etc., into which an appropriate amount of air is injected are provided on the opposing surfaces of the members 8 and 9, respectively.
For example, as shown in FIG. 3, a plurality of rubber plates 14...
are bonded and fixed with adhesive, and the lower member 9 has a positioning pin 15 fixedly protruding from its center as shown in FIG.

The air tubes 12 and 13 are shown in FIGS. 2 and 3, respectively.
As shown in the figure, the inner diameter is equal to the inner diameter of the recessed part 201 in which the center of the wheel rim part 2b is depressed, and the outer diameter extends beyond the bead part 1a of the tubeless tire 1 to the side walls 1b, lb of the tubeless tire 1. The dimensions are set to reach up to

Further, reference numeral 202 in the figure represents a flange continuous in the circumferential direction provided at each end of the rim portion in the axial direction.

16 is a hose for injecting compressed air into the tubeless tire 1, and a compressed air injection nozzle 17 is attached to the tip thereof, and the base end is connected to a pressure gauge 18.

This pressure gauge 18 is connected to a pump (not shown) via appropriate piping.

In the figure, 19.degree. 1g is a guide rod for the upper and lower members 8, 9, 20.degree. 20' is a guide metal, and 21 is a cylindrical body with an open top, which is arranged concentrically with the positioning pin 15.

Although not shown, the cylinders 10 and 11 for moving the stopper actuating cylinder 7 member up and down are each configured to be operated by a switching valve.

Similarly, when supplying compressed air, it is configured to be operated using a push button.

Next, the operation of injecting air into the tubeless tire 1 using the above configuration will be explained.

First, the stopper 5 is placed in an upright position by operating the switching valve, and the operator conveys the tubeless tire 1 on the roller conveyor 3 until it comes into contact with the stopper 5.

Next, another switching valve is operated to operate the cylinder 11 and raise the member 9.

At this time, the operator inserts the positioning pin 15 into the center hole 2a of the wheel 2 to position the tire 1.

As the member 9 rises, the tube 13 moves above the conveyor conveyance surface, and while the tubeless tire 1 is lifted upward from the conveyor 3, the cylinder 10 is actuated, and the member 8 is lowered to lower both sides. The tubeless tire 1 is held in a pressed state by the tubes 12 and 13 of the members 8 and 9.

(See Fig. 3) Then, connect the compressed air injection nozzle 17 to the air injection port 22 formed in the wheel rim portion 2b,
Press the push button to inject compressed air.

When the air pressure in the tire 1 reaches a specified pressure, a pressure switch is activated and the supply of compressed air is automatically stopped.

In this case, since the tube 12.13 contains air and is flexible, even if the air pressure inside the tire 1 increases, the space B surrounded by the tire 1, the rim part 2b, and the tube 12.13 is kept airtight. It is highly effective and keeps it sealed.

In other words, the flange 2 of the tire bead portion 1a and the rim portion 2b
02, the inside and outside thereof, that is, the range extending from the outer surface of the flange 202 of the rim portion 2b to the side walls 1b, 1b of the tubeless tire 1 is kept airtight.

Therefore, air leakage between the tire bead portion 1a and the rim portion 2b is prevented.

Further, even if there are uneven letters, figures, etc. on the side surface of the tire, the spaces B and y can be kept sealed due to the flexibility of the tube.

When the inflation is finished, each cylinder 10, 11 is operated to raise the upper member 8, lower the lower member 9, place the tire 1 on the conveyor 3, lower the stopper 5, and transport it backwards. Waiting for uninflated tires to be delivered.

It should be noted that this invention is not limited to the specific structure of the above embodiment, but includes design changes made within the scope of the technical idea of this invention.

For example, in the above embodiment, both the upper and lower members 8 and 9 are movable up and down, but the upper member 8 may be fixed and only the lower member 9 can be moved up and down. 15 is attached to the lower member 9, but it can also be attached to the upper member 8.

To summarize the above, the tubeless tire inflation device according to the present invention includes a pair of members disposed facing upwardly and downwardly with respect to the conveying surface of a conveyor for conveying tubeless tires assembled on wheels, and having an inner diameter of The center of the wheel rim is equal to the inner diameter of the concave part, and the outer diameter extends beyond the bead of the tubeless tire to the side wall of the tubeless tire, and the air is attached to each member. a positioning pin protruding from the center of one of the members;
The cylinder is equipped with a cylinder that moves at least the lower member up and down, and a nozzle that injects compressed air. When the tubeless tire reaches a position where the upper and lower members face each other on the conveyor, the cylinder is actuated to move the positioning pin to the wheel. While inserting it into the center hole and positioning it, press the area from the outer surface of the flange of the wheel rim on both sides of the tire to the side wall of the tubeless tire to keep it sealed, and then inject compressed air from the air inlet with a nozzle. Since it is designed to be injected, it has the following advantages.

■ The manual handling operations required for air injection work are simple and do not require technical skill.

For example, as shown in Japanese Unexamined Patent Publication No. 46-102, an annular member made of an elastomer material with an inner diameter close to the outer diameter of the flange portion of the rim is provided between the rim and the tire side wall to inflate the tire. If the annular member is designed to roll out from between the rim and the tire side wall, first, the tire is moved so that both side walls of the tire are disposed between the rim and the tire side wall. Attach the annular member to the rim so that it approaches the concave depression in the center of the rim (strain it), and secondly, seat the annular member between the rim and the tire sidewall so that the annular member does not roll out too quickly. In order to do this, the annular member is held in the N position by hand against the pressure of the tire, and in order to facilitate the transmission effect of the annular member, a lubricant is applied to the annular member, etc. However, with this invention, the tubeless tire can be installed at a predetermined setting position of the device, and the positioning pin is correctly inserted into the center hole of the wheel. All you have to do is position the tire so that the tire is positioned properly, and it has the advantage of being extremely easy to handle and requiring no technical skill.

■ In order to maintain airtightness at the abutment between the rim flange and the tire bead during air injection, the above-mentioned known technology has the disadvantage that the rim flange is limited to a shape that allows the annular member to easily roll out. In contrast, with the present invention, it is sufficient to simply press the tube into contact with both sides of the tire.
Therefore, it can be applied even if the shape of the rim flange is curled inward, as shown in the example drawings, for example.
Combined with the effect (2) described below, this has the advantage of further increasing versatility.

■ The structure is extremely simple.

For example, by forcibly pushing down the bead at the upper end of the tire,
Conventional devices that create a gap between the tire and the rim and inject air through that gap have a large number of components and a complex structure, whereas in this design, the upper and lower members simply hold the tire. The structure is simple because air is injected using a separate nozzle.

Moreover, it has the advantages of low manufacturing cost, easy maintenance and management, and resistance to failure.

■ Also, since air is injected through a nozzle rather than an air inlet, it takes some time, but only a small volume of compressed air is required, so there is no need for large equipment for supplying compressed air as in the past.

■ Since the tire is held in place by the tube during inflation, it is possible to maintain a high airtightness even if there are uneven patterns on the side of the tire.

Furthermore, by adjusting the amount of air within the tube, it is possible to optimize the adhesion between the tube and the tire side surface and the wheel rim.

■ It is versatile and can be applied to tires of various sizes by simply replacing the tube.

[Brief explanation of the drawing]

The drawings show an embodiment of the tubeless tire inflation device according to this invention, in which FIG. 1 is an overall side view, FIG. 2 is a plan view of the main part, and FIG. 3 is a side sectional view of the main part. 1...Tubeless tire, 2...Wheel, 3...Conveyor, 8,9...
Members, 10, 11...Cylinder, 12, 13...
...tube, 15 ... positioning pin, 16 ... side wall, 201 ... recess, 202 ... flange.

Claims (1)

[Scope of utility model registration request] A pair of members are provided facing upwardly and downwardly with respect to the conveyor surface of the conveyor that conveys the tubeless tires assembled on the wheels, and the inner diameter is equal to the inner diameter of the concave part where the center of the wheel rim part is concave. and a pneumatic tube attached to each member, the outer diameter of which is sized so that it extends beyond the bead of the tubeless tire to the side wall of the tubeless tire, and a pneumatic tube that protrudes from the center of one of the members. a cylinder for vertically moving at least the lower member of the members, and a nozzle for injecting compressed air, and when the tubeless tire reaches a position facing the upper and lower members on the conveyor, the cylinder is actuated. While inserting a positioning pin into the wheel center hole to perform positioning, press the range extending from the outer surface of the flange of the wheel rim portion on both sides of the tire to the side wall of the tubeless tire with the tube to maintain a sealed state;
An air injection device for tubeless tires, characterized in that compressed air is injected from an air injection port through a nozzle.