WO2001017802A1

WO2001017802A1 - Wheel

Info

Publication number: WO2001017802A1
Application number: PCT/JP2000/006105
Authority: WO
Inventors: Kotaro Ono; Heinrich Baumgartner
Original assignee: Washi Kosan Co., Ltd.
Priority date: 1999-09-08
Filing date: 2000-09-07
Publication date: 2001-03-15
Also published as: JP2001071701A

Abstract

A wheel having a tire installed thereon and capable of regulating a pressure of gas inside a tire without feeding gas from the outside, wherein one or more hollow portions are provided in the wheel, at least one portion is formed as a sealed one, an atmospheric pressure inside the sealed portion is set higher than the atmospheric pressure inside the tire, and the high pressure gas is fed into the tire, and the sealed portion is formed by making hollow a spoke portion or by providing a hollow part at a rim part; as an example, a spoke sealing portion (4) is formed in four spokes of the wheel (1), a gas passage (12) is formed in each spoke, and an opening (13) is provided so as to communicate with a tire sealing portion (5), these sealing portions communicate with each other through a directional switching valve, an air valve (10) is provided at the end part of the directional switching valve and compressed air is filled into each sealed portion and, when a tire pressure is increased, the directional switching valve is operated to communicate a high pressure spoke sealed portion to a gas passage so as to fill high pressure gas into the tire by a pressure difference.

Description

TECHNICAL FIELD The present invention relates to a wheel for a wheel in which the gas pressure inside a tire can be adjusted in a wheel equipped with a tire.

[Background technology] Wheels are indispensable when traveling on the ground at high speed such as motorcycles, vehicles, and airplanes, and are important security components in reducing vibration and stabilizing the ground. Normally, tires are mounted, and gas is hermetically sealed inside the tires. In order to fill the tire with gas, an air valve is provided on the wheel side to inject compressed air so that the pressure inside the tire does not decrease. However, when driving at high speed and receiving a large load, the tire rotates while deforming, so that some air leaks from the fitting part between the wheel and the tire, and the confidentiality of the tire is impaired by picking up nails etc. The pressure inside the tire may decrease. Also, when traveling on a general road and an expressway, it is preferable to change the pressure inside the tires.When traveling on an expressway, the pressure is increased by about 10 to 20% compared to when traveling on an ordinary road. It is desirable to set. As described above, the management of the air pressure inside the tire is an important daily inspection item, but at present, it is up to the maintenance staff to ask the maintenance staff to adjust the air pressure when refueling.

A large number of prior arts related to a system for confirming the air pressure of the evening from the driver's seat and further increasing or decreasing the pressure have been disclosed. For example, Japanese Unexamined Patent Publication No. 55-156706 discloses tires. By providing a diaphragm-type air reservoir on the side of the wheel disc to communicate with the tire interior and changing the volume of the air reservoir, the air pressure in the tire interior can be changed at any time, whether high or low. The wheels of the constructed agricultural vehicle are described. In this case, air is not newly replenished from the outside. Japanese Patent Application Laid-Open No. Hei 4-31010 discloses a technique in which air is supplied from the outside to change the tire volume and change the tire air pressure. In the side wall portion of the tire, a compartment is provided which is isolated from the tire air chamber, and fluid supply / discharge means for supplying / discharging fluid to / from the compartment is provided. Means to control The supply and discharge of the fluid is performed through a pipe extending from the center of the axle. A number of other prior art techniques have been disclosed for adjusting tire pressure, which supplies air by connecting a pipe extending from the center of the axle to a valve of a wheel. Supplying air from a fixed outside to the tire on which the rotating tire is mounted is inevitably required to use a rotating joint, which is not preferable from the viewpoint of durability and design. The air valve is indispensable as an air supply port, and is usually attached to the outer peripheral edge of the wheel. However, in Japanese Patent Application Laid-Open No. 8-67101, a hollow portion of a wheel having a hollow spoke is provided. A wheel that supplies a pressurized air by providing a tire pressure valve at a hub as a compressed air flow path is shown. Therefore, since the tire pressure valve can be arranged at a position close to the center of rotation, it can be covered with the center cover of the wheel, which is advantageous for protecting the tire pressure valve and also for the rotation weight balance. It works. Although there is pressurized air in the hollow spokes, the air pressure is equal because the passage communicating with the inside of the tire is provided, and the air volume is large. No adjustments have been made.

The problem to be solved by the present invention is to provide a wheel for a wheel on which a tire is mounted, which can adjust the pressure of the gas inside the tire without supplying gas from the outside. [Disclosure of Invention] According to the present invention, one or more hollow portions are provided in a wheel, and at least one of the hollow portions is configured as a sealed portion, and the internal pressure of the sealed portion is higher than the pressure inside the tire. It is set to pressure. A sealing portion provided separately from the gas sealing portion inside the tire is preferably used, and the other sealing portion having a hollow spoke portion is suitably used. Normally, the gas pressure inside the tire Taking the passenger cars as an example is about 2 kgf Z cm ^2, the gas pressure is Mashiku set preferences to even higher pressures of the sealing portion provided on another supra 6 Even if the volume is small at 15 kgf / cm ² , it can be regarded as 3 to 8 times the volume when converted to the pressure inside the tire. The inside of the rim may be partially partitioned to form a sealed portion. The gas sealed inside the separately provided sealing portion is not limited to air, but may be nitrogen gas or the like.

Then, a valve is provided on the wheel so that gas can be injected into the tire from the sealed portion by a pressure difference. The valve may be installed directly on the rim that separates the sealed part from the sealed part inside the tire, or it may be installed in the center of the hub and connected to each sealed part by piping. In this case, a valve that can be switched in multiple directions is used. Use lever screws, bolts, etc., and make sure that the valves are easily operated with scales, marks, ball latches, etc. so that they can be easily switched and adjusted from the outside.

In addition, as described above, a valve is provided so that gas can be injected into the tire from the sealed portion by a pressure difference, and the injection amount can be adjusted by attaching a pressure gauge or making contact with the pressure gauge. Provide a nozzle to which the pressure gauge can be attached or contacted in one direction of the multi-way switching valve.

Further, an inlet for injecting compressed air from the outside is provided in the aforementioned valve. As the inlet, a commonly used type of air valve can be used. The valve Manually switch using a multi-way switchable valve, first open the circuit leading to the inlet and the tire seal and inject 2 kgf / cm ² of compressed air, then open the circuit leading to the seal and 6 to: 15 injecting compressed air kgf / cm ^2. If the valve is placed in the center of the hub and an inlet is attached to it, it can be covered with a center power bar for attaching the emblem, so that the inlet valve as an inlet can be hidden from outside. .

After the operation described above, it is necessary to reduce the pressure of the pressurized tire sealing portion. For example, this is a case where the vehicle travels on a general road after finishing high-speed traveling. In this case, one circuit of the multi-way switching valve shall be connected to the atmosphere, and the gas inside the tire will be discharged to the outside through the multi-way switching valve configured so that the above switching is easy and the position is clear. Release.

For easier operation, one or more spokes are provided with a sealed high-pressure gas part, and externally visible graduations or symbols are provided in the path between these high-pressure gas parts and the inside of the tire. A valve to be attached and adjusted is arranged, and the tire pressure is adjusted by selecting the scale or symbol. The gas pressure of the tire that rises when the gas in one high-pressure gas part is injected into the tire due to the pressure difference is checked in advance, and the gas is discharged from one high-pressure gas part by advancing the scale by one. If it is necessary to inject gas into the tire from two or more high pressure gas parts, this can be quantitatively achieved by advancing the scale by two or more. Since the wheel may specify the mounted tire and can know the volume inside the tire, if the pressure of the high-pressure gas part is specified, the pressure inside the tire will be determined by one high-pressure gas part Can be announced. Further, by providing a gauge insertion hole having a valve mechanism for measuring the pressure in the tire, high-pressure gas can be injected while observing the air pressure.

[Brief description of drawings] FIG. 1 is a cross-sectional view taken along a plane passing through a rotation axis of a wheel for a wheel of the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

3 (a) is an exploded perspective view of a direction switching valve used in the wheel for a wheel according to the present invention, (b) is a perspective view in a practical case, and (c) is a front view. .

FIG. 4A is a perspective view of a direction switching valve according to another embodiment, and FIG. 4B shows a piston portion. (C) is a front view of the scale plate.

5A is a cross-sectional view showing another embodiment, FIG. 5B is a vertical cross-sectional view of a gas injection member, and FIG. 5C is a front view.

Explanation of reference numerals

1,1a Wheels for wheels

2 Aluminum alloy wheels

2a spoke

2b rim

3 tires

4 spoke seal

5 Tire seal

6 Vent pipe

7 Knop

8 Switching valve

9 hose

10 Air valve

12 Gas passage

13 Opening

14,14a cylinder , 15a bis ton

Port

, 18a flange

Rotary drive

Hand dollar

Spiral groove

Vent

cover

scale

, 45 ball plunger knob

Cylinder per flange Piston flange Sealing valve

Scale plate

Outer rim

Sealing member

Joint

Rim sealed part Tire sealed part Gas injection member Cylindrical

Bottomed cylinder

Valve

Cavity

, 64 opening hole 66 USD

67 Mating groove

70 scale plate

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described based on an example with reference to FIG.

[Example 1]

FIG. 1 is a vertical cross-sectional view of a wheel 1 for a wheel according to the present invention, which is opened on a plane passing through a rotation axis. 2 is an aluminum alloy wheel, and 3 is a tire. The wheel 2 is composed of a hollow spoke 2a and a rim 2b, and the manufacturing method is not particularly limited, and the two are welded and integrated. The hollow part of the spoke is sealed, and the spoke sealing part 4 is formed, and a ventilation pipe 6 is provided in a part thereof. The space formed by the rim 2 b and the mounted tire 3 forms a tire sealing part 5. A direction switching valve 8, which will be described later, is provided at the center of the hub 7, and connects each port to the ventilation pipe 6 with a hose 9. At one end of the direction switching valve 8, an air valve 10 for injecting compressed air having a structure generally used as an injection port is attached, and a cover 1 with an emblem or the like covering the surface thereof is attached. 1 is installed. Figure 2 shows a cross-sectional view taken along the line A-A.

FIG. 2 is a cross-sectional view taken along the line AA in FIG. The wheel 1 comprises a rim 2b integrally joined to five hollow spokes 2a extending from a hub 7 and a tire 3 mounted thereon, forming a spoke sealing portion 4 and a tire sealing portion 5. I have. The feature of this example is that one of the spoke sealing portions is used as a gas passage 12. The gas passage 12 is provided with an opening 13 communicating with the tire sealing portion 5. In the center of the hub 7 there is a directional change valve 8, which is connected to the spoke sealing part 4 and the gas passage 12 by a hose 9 to the empty honey. Is tied. Further, a air valve 10 is attached to the outer end face of the direction switching valve 8, so that compressed air can be injected from an external compressor. The procedure for injecting compressed air is as follows. Manually open the circuit connecting the direction switching valve 8 to the layer valve 10 and the gas passage 12 and inject compressed air from the compressor to adjust the gas pressure in the tire sealing portion 5 to a predetermined pressure (passenger car). Then about 2 kgf / cm ² ). Next, the circuit of the direction switching valve is manually opened by opening the circuit of the valve 10 and the spoke sealing portion 4, and high-pressure compressed air (6 to 15 kgf cm ² ) is injected. In this example, since there are five spokes, there are four spoke-sealed portions 4, and injection is performed simultaneously through each port of this circuit. After that, all circuits are closed and the vehicle is driven. If it is desired to increase the gas pressure in the sealed portion 5 by 10 to 20% during high-speed traveling, the direction switching valve 8 is manually opened to open the circuit between the spoke sealed portion 4 and the gas passage 12 to supply high-pressure air. Embed. When detecting the gas pressure in the sealed portion 5 of the tire, the circuit connecting the air valve 10 and the gas passage 12 is opened, and the pressure is detected by a generally used pressure gauge. This circuit can also help to reduce the air pressure in the tire seal 5, such as when driving off a highway into an open road. The tip of the hair valve may be pressed as usual. Further, a circuit communicating with the atmosphere may be provided in the direction switching valve. In the above description, the direction switching valve was manually operated. However, it is also possible to operate the direction switching valve from a remote position by providing an electric drive unit.

The structure of the manual directional switching valve 8 will be described with reference to FIG. The direction switching valve 8 includes a cylinder part 14 and a biston part 15. In the figure, the button part is extracted and shown. Ports 16 to which the hoses 9 are connected are arranged at five locations on the same circumferential surface of the cylinder portion 14 and open to the cylinder hollow portion 17. There are five ports and they are shown as 16a-e. The flange 18 fixed to the cylinder constitutes a fitting portion for fitting a rotation drive portion 19 rotatably fitted to the tip thereof, and marks 20 A, B, and C are added. Have been. Mark C is not visible, but they are equally distributed in three places so that the position of biston 15 can be seen. Further, the rotation drive section 19 is provided with a handle 21 and a drive pin 22 fixed therethrough. Piston drive member between rotary drive 19 and cylinder 14

A screw groove 24 is engraved on the surface of the screw and a screw groove 24 is formed on the surface.The screw drive member 23 is rotated on the cylinder by the rotation of the handle 21 by engaging with the drive pin 22 described above. Drive back and forth without. Although not shown, a slide bearing is incorporated into the surface of the cylinder 14 and the inner surface of the bistone driving member 23 to smooth the longitudinal movement of the biston driving member.

The biston 15 has a hollow portion 25 having an opening only on one side, and an air valve 10 and a piston driving piece 26 are screwed into the opening. The biston driving piece is fitted into the notch 27 provided at the end of the above-mentioned biston driving member, pressed down by the ring 28 and fixed. By rotating the handle 21 with such a configuration, the biston 15 can be positioned in the cylinder. Some parts are shown in section to clarify the interior of the biston. Section A has one vent hole

30 is provided, which communicates with port 16e and communicates with gas passage 12 (see Fig. 2). Section B is provided with ventilation holes 30 at four locations, communicating with ports 16a, b, c, d, respectively, and leading to spoke sealing portion 4. In section C, vent holes 30 are provided at five locations, which are the locations that communicate with ports a, b, c, d, and e and allow the spoke seal and tire seal to communicate. In this configuration, the position of the section A, B, or C to be selected is determined by the rotation angle of the rotation drive unit 19, and the rotation position can be confirmed by the marks 20a, b, and c. Reference numeral 31 denotes a sealing material for maintaining airtightness, and reference numeral 32 denotes a depression hit by a ball plunger for rotational positioning. As described above, when the position of section A is selected and compressed air is injected from the air valve 10, the compressed air is injected into the sealed portion of the tire through the gas passage 12 shown in FIG. At the position, high-pressure compressed air can be injected into the spoke seal, and at the position of section C, the high-pressure gas at the spoke seal can be injected into the tire seal by utilizing the pressure difference. Monitors the pressure in the tire seal In this case, the handle 21 can be quickly rotated to return to the position of the cross section A, and the air pressure valve 10 can be brought into contact with a generally used pressure gauge. In addition, it is also possible to drive the biston using electric means such as a motor and a solenoid, and the present invention includes providing another port and a vent to provide a gas flow path. It is. The switching valve shown in this example is a three-way switching valve, and a switching valve having another configuration may be used.

FIG. 3B is a perspective view showing the appearance of the directional control valve 8 in a practical case. The cylindrical cover 33 is fitted to the flange 18. Knob 33 is provided on the side of handle 21 and the handle is turned with a finger. The mark 34 is a mark on the handle that is rotated and used as a guide to match the scale 35 described on the cover.A ball plunger 36 is provided on the force par for accurate positioning. . The ball fits into the recess 32 provided in the handle 21 described above. Characters may be written around the scale in addition to symbols to identify the position of the direction switching valve as shown in Fig. (C). In the figure, the valve means the air valve 10, the tire indicates the tire sealing part, and the high pressure part indicates the spoke sealing part which seals the high pressure gas.

[Example 2]

FIG. 4A shows a direction switching valve 8a showing another embodiment. The cylinder 14a has a bottom and an opening on one side, and is fixed to a flange 18a. Ports 16a, b, c and d mentioned above are arranged at a fixed angle on the same circumferential surface, but port 16e is located at a distance in the axial direction. A cylinder flange 40 is provided on the opening side of the cylinder, and rotatably fits with a piston flange 41 of a bistone 15a shown in FIG. The piston 15a has a cylindrical shape, and a piston flange and an air valve 10 are fixed on one side and open on the other side. The vent hole 30 is located at a position that communicates with the ports 16a to 16d when the piston 15a is incorporated into the cylinder 14a. Port 16e is open in the cylinder without contact with piston 15a, but a sealing valve Provide 42 and rotate using a screwdriver to seal port 16e. This port has a role to seal the gas inside the tire because it communicates with the tire sealing part. In the first embodiment described above, the biston moves back and forth in the axial direction, but in this embodiment, only the rotation is performed.

The operation procedure will be described below. FIG. 4C is a front view of the scale plate 43, which is engraved on the piston flange 41. Mark 4 4 is engraved on the cylinder flange. When the scale plate 4 3 is rotated by putting a finger on the knob 3 7, the piston 15 a is also rotated together. And open the sealing valve 42 to open the path to the port 16e and the tire seal. In this state, compressed air is injected from the air valve 10 to adjust the pressure in the tire to a predetermined pressure. Inspection of the air pressure is performed by using a normal air pressure gauge to make contact with the air valve 10. Thereafter, the sealing valve 42 is sealed using a screwdriver. Next, rotate the scale 1 so that the position of the symbol 1 described as the high pressure part of the scale plate matches the mark 4 4. In the rotation positioning, the ball plunger 45 attached to the cylinder flange 40 is brought into contact with the recess of the biston flange 41. The position where the symbol 1 coincides with the mark 4 4 is the position where the vent hole 30 communicates with the port 16a. Consists of a gaseous part. In the same manner, the scale plate is sequentially rotated in the order of symbols 2 to 4 to form high-pressure gas portions in the four spokes. Further, rotate the scale plate to match the position of symbol N with the mark, and complete the operation of injecting compressed air. The position of the symbol N indicates the neutral position, and the vent hole 30 does not communicate with any port.

Next, if it is desired to increase the pressure in the tire during traveling, the sealing valve 42 is opened, and the position of the high-pressure part symbol 4 on the scale plate matches the mark. At this time, high-pressure compressed air flows from the high-pressure gas section through the port 16d, the piston vent hole 30, and the port 16e into the tire through the cylinder, and the gas pressure in the tire increases. One high It is necessary to know in advance how much the gas pressure in the tire can be increased by using the compressed air in the pressurized gas part.However, since the tire suitable for the wheel can be specified, the high pressure gas part With the gas pressure value of the above, the rise value of the air pressure in the designated tire can be notified. If the compressed air of one high-pressure gas part is used, assuming that the pressure in the tire increases by 5%, if the compressed air of four high-pressure gas parts is used, the tire pressure of about 20% will be increased. Can rise. When the work to increase the gas pressure in the tires is completed, quickly rotate the scale plate to the position of V-T or N and contact the gauge with the air valve 10 to check the air pressure. It may be used for traveling at the position of this scale, but it is safer if the sealing valve 42 is closed.

In order to reduce the pressure inside the raised tire, the sealing valve 42 should be opened and the protruding part communicating with the valve element of the air valve 10 should be pressed to release the compressed air. Perform the following operations to perform The scale plate is rotated to the symbol position of the used high-pressure portion, and the protrusion of the air valve 10 is pressed while the sealing valve 42 is closed to discharge the remaining compressed air. Compressed air remaining is about 2. 2 ~ 2. 5 kgf / cm 2 because they correspond to the pressure in the raised tire, because equals to Repa atmospheric air first valve 1 0 is opened, If the sealing valve 42 is opened in this state, a certain amount of gas in the tire can be stored. Since the pressure of the stored gas is at least equal to the pressure inside the tire and higher than the atmospheric pressure, the air valve is opened again to discharge the stored gas. By repeating this operation, the gas pressure in the tire can be accurately reduced. However, it is necessary to notify that the weight loss rate will not be constant every time since the pressure inside the tire will gradually decrease as the weight loss after the first time in the repeated operation, but practically within the error range Things. In this situation, it is necessary to clearly indicate to the user that the same phenomenon occurs when the pressure in the tire is sequentially injected into the tire from the high-pressure gas portion. Although not particularly exemplified, a pressure gauge may be installed in the air valve using a pressure gauge capable of bleeding and injecting air while monitoring air pressure, and pressurizing and depressurizing the air. In this case, position the scale plate at the position of V-T or N. [Example 3]

FIG. 5 (a) shows an example in which a sealing portion is provided on the rim. An annular sealing member 51 is welded to an outer rim 50 of the wheel la for welding with a joining portion 52 to form a rim sealing portion 53. The rim sealing portion extends over the entire circumference and is a single sealing portion in this example. Reference numeral 54 denotes a disk, 55 denotes a part of the mounted tire, and 56 denotes a sealed portion of the tire. A gas injection member 57 that penetrates the rim sealing portion 53 and reaches the tire sealing portion is provided airtight by applying caulking 58 to the penetrating portion.

FIG. 7B is a longitudinal sectional view of the gas injection member 57. The gas injection member 57 is composed of a cylinder 59 and a cylinder 60 with a bottom that can rotate airtightly on its inner surface, and a valve 61 having the same configuration as an existing air valve is incorporated therein. Opening holes 63 a and 63 b are provided at two different positions of the cylindrical surface at different rotational angular positions in the hollow portion 62 on the bottom side connected to the valve. In addition, opening holes 64a and 64b are provided in the cylinder 59 at positions that match when these opening holes 63a and 63b rotate and change the position. A sealing material 65 is fitted on the opening side of the rotating bottomed cylinder 60 to secure airtightness with the cylinder 59 and to fix the handle 66. FIG. 7C is a front view of the gas injection member 57, in which a rotating handle 66 is provided with a fitting groove 67 and a mark 68 in which a tool such as a screwdriver is fitted. A scale plate 70 on which a scale 69 for confirming the position of the bottomed cylinder 60 corresponding to this mark is fixed to the cylinder 59. The symbol A on the scale 6 9 is the position where the compressed air injected through the valve 61 communicates with the tire sealing part 56, B is the rim sealing part 53, and C is the rim and tire sealing part. The opening position is shown. The operating procedure is as follows: align the mark with the symbol A on the scale plate 70, inject compressed air at a predetermined pressure into the sealed portion of the tire, and then inject high-pressure compressed air into the sealed portion of the rim according to symbol B. Complete. If you want to increase the tire air pressure while driving, quickly move the mark to position C and send high-pressure compressed air into the tire due to the gas pressure difference. To detect the pressure inside the tire, return the mark to the position of symbol A and open the valve. The measurement may be performed with a commonly used gauge by pressing the tip of the sample. The bottom of the bottomed cylinder 60 may be assembled later by assembling a gas injection member or fitting a related member of the valve 61. If the rim sealing part has a larger volume and is connected to the spoke sealing part or if the inside of the spoke is used as the above gas passage 12, the pressure can be reduced by using the direction switching valve shown in the previous embodiment in the center of the hub. It is also possible to perform control.

[Industrial Applicability] As described above, according to the wheel for a wheel of the present invention, the air pressure of the tire can be increased or decreased at any place as needed. For example, when setting higher than normal tire pressure when shifting to high-speed driving, when pressurizing after driving on unpaved roads with reduced tire pressure, or when tire pressure is reduced for some reason It can also be used for emergency treatment. Although the spoke type wheel has been described, the present invention is not limited to this, and the provision of a cavity in a disk-shaped disk is also included in the present invention.

Claims

Scope of Claim The wheel is provided with one or more hollow portions, at least one of which is configured as a sealed portion, and the internal pressure of the sealed portion is higher than the air pressure inside the tire. Wheels for you.

2. The wheel according to claim 1, wherein a valve is provided so that a gas can be injected into the tire from the sealed portion by a pressure difference.

A valve is provided so that gas can be injected from the sealed portion into the tire by a pressure difference, and the injection amount can be adjusted by attaching a pressure gauge or abutting the pressure gauge. Or a wheel for a wheel according to 2.

The wheel for a wheel according to any one of claims 1 to 3, wherein the valve has an inlet through which compressed air from the outside can be injected.

The wheel according to any one of claims 1 to 4, wherein the air inside the tire is discharged to the outside through the valve in order to reduce the air pressure inside the evening wheel.

—Valve provided with a sealed high-pressure gas portion in the book or spokes, and with an externally visible scale or symbol in the path between the high-pressure gas portion and the tire interior The wheel according to any one of claims 1 to 5, wherein a tire pressure is quantitatively adjusted by selecting a scale or a symbol.