WO2008035437A1

WO2008035437A1 - Vehicle tire

Info

Publication number: WO2008035437A1
Application number: PCT/JP2006/318862
Authority: WO
Inventors: Fusayoshi Fukunaga; Yasuto Fukunaga
Original assignee: Fukunaga Office Co., Ltd.
Priority date: 2006-09-22
Filing date: 2006-09-22
Publication date: 2008-03-27

Abstract

A vehicle tire having an adequate impact absorption function to provide the vehicle with excellent ride quality and enabling replacement of only a tread pattern section when it wears out. The vehicle tire has a tread (2) for a vehicle, which tread forms the outer peripheral surface of the tire, and a wheel (3) for a vehicle, to which the tread can be detachably attached. The tread and the wheel are constructed as separate bodies, and a repulsion section for absorbing an impact applied to the tread is provided in an open region formed between the tread and a base section (3a) of the wheel.

Description

Specification

Tires for vehicles

Technical field

[0001] The present invention relates to a vehicle tire. More specifically, the present invention relates to a vehicle tire having a structure in which no air chamber is formed between the vehicle wheel and the vehicle tread.

Background art

[0002] A pneumatic tire adopts a structure in which an air chamber in a sealed region is formed between a vehicle wheel and a vehicle tread. In a pneumatic tire, various functions required for a vehicle tire for the first time by injecting appropriate air into the air chamber Demonstrate. That is, (1) If the internal pressure of the air chamber is too low, the resistance will be increased by deformation!] And the steering performance will be reduced. (2) If the internal pressure of the air chamber is too high, the tire will be deformed. Although there is almost no loss, the vibration will be great and the ride quality will be poor, or the ground contact area of the tire will be small. Therefore, for pneumatic tires, it is important to adjust the internal pressure of the air chamber.

[0003] Therefore, various methods for adjusting the internal pressure of the air chamber from the vehicle body side to increase or decrease the pressure have been proposed. For example, Patent Document 1 includes a diaphragm valve and a spool valve. A mechanism is disclosed in which an air pressure adjusting valve is installed on the tire side, and a pressure control valve and a pressure release valve are installed on the vehicle body side. The mechanism described in Patent Document 1 increases, neutralizes, or neutralizes the air pressure adjustment valve by the pressure difference between the internal pressure of the air chamber and the air pressure supplied from the vehicle body side adjusted by the pressure control valve and the pressure release valve. By controlling to the decompression position, the internal pressure of the air chamber can be controlled.

[0004] Here, pneumatic tires are excellent in load support function, grounding impact absorption function and force transmission function (acceleration, stop, direction change), and by these functions, many vehicles, particularly automobiles, motorcycles, bicycles, Although it is favorably used for trucks, it is possible to cause a major accident if a pneumatic tire is used in an environment subject to trauma or if a puncture occurs. There is a need to develop alternative solid solid tires.

[0005] However, in the case of solid tires, the impact associated with the load is caused solely by the compression elasticity of rubber. It has been pointed out that the driver has a lot of fatigue when continuously driving for a long period of time when the ride feels uncomfortable.

As shown in FIG. 12, which eliminates these problems, a pair of left and right annular beat cores 102a and 102b are arranged inside the tread portion 101, and a reinforcing layer 103 is arranged between these beat cores. Constructed with a large number of cords stretched so as to be arranged diagonally in the tire circumferential direction while being slanted with respect to the axial direction of the tire between the beat cores, and continuous in the tire circumferential direction inside the reinforcing layer The technology to provide the gap 104 is proposed, and the load received by the tread part by such a technique is borne by the reinforcing layer while holding the load by the cord tension while efficiently absorbing the load. (For example, refer to Patent Document 2).

[0006] Patent Document 1: Japanese Patent Laid-Open No. 4 287705

Patent Document 2: JP 2006-175983 A

Disclosure of the invention

Problems to be solved by the invention

[0007] By the way, in the above-described solid tire, when a tire mountain (tread pattern) that is only a part of the surface in contact with the ground is worn away, the performance of the tire is greatly reduced and slipping is caused. Due to the loss of safety, it was necessary to replace the tires (whole), which caused problems in resource utilization efficiency. Although most of the old tires generated from tire replacement are recycled, they are mostly recycled, but in the first place they are handled in large quantities. I was asked.

[0008] The present invention was devised in view of the above points, and enhances the shock absorbing function to ensure the comfort of the ride and only the tread pattern portion when the tread pattern is worn down. An object of the present invention is to provide a vehicle tire that can be replaced.

Means for solving the problem

[0009] In order to achieve the above object, a vehicle tire according to claim 1 includes a vehicle tread constituting a tire outer peripheral surface, and a vehicle wheel to which the vehicle tread is detachably attached. A vehicle tire comprising: the vehicle tread; and the vehicle wheel; Is configured as a separate body, and a repulsion portion that absorbs an impact received by the vehicle tread is provided in an open area formed between the vehicle tread and the base portion of the vehicle wheel.

[0010] Here, the repulsion part that absorbs the impact received by the vehicle tread is provided in the open area formed between the vehicle tread and the vehicle wheel base, so that only the vehicle tread is provided. In addition, the impact can be absorbed even in the repulsion part, and the impact that cannot be absorbed only by the vehicle tread can be absorbed. That is, in general, a solid tire absorbs an impact caused by a load load exclusively by the elastic structure of the tire (for example, the compression elasticity of a rubber material constituting a vehicle tread). It is possible to obtain comfortable riding comfort by absorbing not only the elastic structure of the torso but also the repulsion part.

[0011] Further, since the vehicle tread and the vehicle wheel are configured as separate bodies, that is, the vehicle tread and the vehicle wheel are configured as a single body, only the vehicle tread is configured. Exchange is possible and resource saving is realized.

[0012] In addition, resource saving can be achieved by forming an open area between the vehicle tread and the base of the vehicle wheel. In other words, an air chamber is not formed between the vehicle tread and the base of the vehicle wheel main body, as in the case of a solid (no occurrence of a puncture, a situation where a stagnation does not occur). When a vehicle tread having a configuration in which the air chamber is filled with a rubber material or the like is attached, when replacing the vehicle tread due to wear of the tread pattern, While it is necessary to replace the solid area that is not worn, it is necessary to replace the tread pattern when an open area is formed between the vehicle tread and the base of the vehicle wheel. When replacing a tread for a vehicle due to wear and tear, it is a matter of course that the force release area is not exchanged, so resource saving can be realized by the area of the open area.

[0013] Note that an open area is formed between the vehicle tread and the vehicle wheel base, that is, an air chamber (sealed area) between the vehicle tread and the vehicle wheel base. ) Is formed and is obscene, so there will be no occurrence of punctures!

The term “vehicle” here refers to the transportation of passengers such as automobiles, motorcycles, trains, and aircraft. For example, and is not limited to so-called automobiles.

[0014] Further, in the vehicle tire according to claim 2, the vehicle tread is disposed through a predetermined gap with the vehicle wheel in a normal state, and when the vehicle tread receives an impact, It is configured to be movable in the radial direction of the vehicle wheel.

[0015] Here, the vehicle tread is disposed through a predetermined gap from the vehicle wheel while the vehicle tread is in a normal state, that is, the vehicle tread is not particularly impacted, and the vehicle tread is subjected to the impact. Since the vehicle wheel is configured to be movable in the radial direction, the impact received by the vehicle tread can be absorbed by the vehicle tread moving freely. In other words, at least a part of the impact received by the vehicle tread is moved by the vehicle tread itself, so that energy can be consumed and the impact received by the vehicle tread can be absorbed.

[0016] Further, the repulsion part of the vehicle tire according to claim 3 absorbs the impact when the vehicle tread receives an impact exceeding a predetermined value.

[0017] Here, when the vehicle tread receives an impact exceeding a predetermined value, the vehicle wheel is provided with a repelling portion that absorbs the impact, so that it cannot be absorbed only by the elastic structure of the vehicle tread. It can absorb shocks and provide a comfortable ride.

[0018] Here, "impact exceeding a predetermined value" means an impact that cannot be absorbed by the vehicle tread alone. In other words, the impact that can be absorbed only by the vehicle tread is absorbed by the vehicle tread, and the impact is absorbed by the repelling part that cannot be absorbed by the vehicle tread.

[0019] Furthermore, in the vehicle tire according to claim 4, the repulsion part has a resistance to the vehicle tread against the movement or deformation of the vehicle tread radially inward of the vehicle wheel. As a configuration to give power.

[0020] Here, the repelling part receives the vehicle tread by applying resistance to the vehicle tread against the vehicle tread moving or deforming inward in the radial direction of the vehicle wheel. The impact can be absorbed by the repulsion part.

[0021] Further, in the vehicle tire according to claim 5, the repulsion portion is a predetermined distance from the vehicle tread. The vehicle tread is deformed and abuts against the repulsion part when the vehicle tread receives an impact exceeding a predetermined value.

[0022] Here, the repelling portion is arranged with a predetermined gap from the vehicle tread, and when the vehicle tread receives an impact exceeding a predetermined value, the vehicular tread is deformed and comes into contact with the repelling portion. The shock received by the vehicle tread is absorbed by the deformation of the vehicle tread (first-stage shock absorption), and then the vehicle tread comes into contact with the repulsion part so that the repulsion part becomes the vehicle tread. The impact can be absorbed in two stages, such as absorbing the impact (second stage impact absorption), and the impact received by the vehicle tread can be absorbed effectively.

[0023] Furthermore, in the vehicle tire according to claim 6, the vehicle tread is attached to be movable in a radial direction of the vehicle wheel via a fixing member, and is fixed by the fixing member. It is configured to maintain a predetermined shape at the position.

[0024] Here, the vehicle tread is restricted in its free movement by the fixing member and can maintain the predetermined shape at the predetermined position, that is, the position in the circumferential direction of the vehicle wheel that does not adversely affect the traveling. In addition, since the vehicle tread can be maintained at the position in the width direction of the vehicle wheel that does not adversely affect traveling, stable traveling is possible.

[0025] Further, the vehicle tire according to claim 7 includes a fixing member configured to be movable in a radial direction along a guide formed on the vehicle wheel, with the fixing member being interposed therebetween. By attaching the vehicle tread to the vehicle wheel, the vehicle tread is arranged with a predetermined gap from the vehicle wheel, and the vehicle tread moves in the radial direction of the vehicle wheel. It is configured to be possible.

Here, the vehicle tread is arranged with a predetermined gap from the vehicle wheel, and the vehicle tread is configured to be movable in the radial direction of the vehicle wheel, so that the vehicle tread is received. The impact can be absorbed by the free movement of the vehicle tread. In other words, energy consumed by the vehicle tread itself moving at least part of the impact received by the vehicle tread can absorb the impact received by the vehicle tread.

[0027] Here, as an example of the guide, a recess is formed in the vehicle wheel, and the inside of the recess is a fixing member. Is configured to be movable, the fixing member is a rod-shaped member having an outer diameter smaller than the inner diameter of the recess, and one end of the rod-shaped member is attached to the annular vehicle tread and the other end is in the recess. By adopting such a configuration, the vehicle tread can be attached very easily, and the vehicle tread ring can be prevented from falling off.

That is, when the vehicle tread is attached, the fixing member (rod-like member) is inserted into the recess so that the protrusion of the recess force can be reduced as much as possible and the vehicle tread can be easily attached. In addition, if the vehicle tread is dropped due to the vehicle tread being configured in an annular shape, there is no danger.

[0028] Further, in the vehicle tire according to claim 8, the vehicle tread is composed of a plurality of rod-like members or plate-like members made of an elastic material, and each rod-like member or plate-like member is the same rod-like member or The longitudinal direction of the plate-like member is arranged along the radial direction of the vehicle wheel.

[0029] Here, a tread for a vehicle is constituted by a plurality of rod-like members or plate-like members each having an elastic material force, and each rod-like member or plate-like member extends in the longitudinal direction of the rod-like member or the plate-like member. By arranging them along the radial direction, when the vehicle tread is subjected to an impact, the rod-like or plate-like members constituting the vehicle tread can restrain each other and prevent buckling deformation. The impact received by the vehicle tread can be effectively absorbed by the vehicle tread itself.

[0030] Further, in the vehicle tire according to claim 9, the vehicular tread has a recess formed on an inner peripheral surface, or a recess formed on the inner peripheral surface, and is predetermined in a circumferential direction of the recess. Reinforcing members are provided at intervals.

[0031] Here, since the recess is formed in the inner peripheral surface of the vehicle tread, the impact received by the vehicle tread can be absorbed by the vehicle tread itself being deformed. In other words, the vehicle tread itself can absorb the impact received by the vehicle tread by consuming energy by deforming at least a part of the impact received by the vehicle tread itself. A concave portion is formed on the inner peripheral surface of the vehicle tread and reinforcing members are provided at predetermined intervals in the circumferential direction of the concave portion, thereby suppressing excessive deformation of the vehicle tread. ff¾ can be.

[0032] Further, in the vehicle tire according to claim 10, a reinforcing member arranged annularly in a state where each of the plurality of core members receives a compressive force is embedded in the tread for the vehicle, or It arrange | positions in the radial direction inner side of the said wheel for vehicles rather than the tread for vehicles.

[0033] Here, since the reinforcing member is arranged in an annular shape with each of the plurality of core members receiving a compressive force, when the reinforcing member receives an impact, the applied force is also applied to the spring. It can function like this and absorb the impact. Therefore, the reinforcement member is embedded in the vehicle tread or disposed radially inside the vehicle wheel with respect to the vehicle tread so that the impact received by the vehicle tread can be absorbed by the reinforcement member. it can.

The invention's effect

[0034] In the vehicle tire to which the present invention described above is applied, the shock absorbing function can be enhanced to obtain the comfort of the ride center. Further, when the tread pattern is worn down, only the tread pattern portion is provided. Can be exchanged.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings to provide an understanding of the present invention. Although the following examples describe several methods for attaching the vehicle tread to the vehicle wheel, the methods for attaching the vehicle tread to the vehicle wheel are limited to the methods described below. It can be done in any way that is not necessary. In the following examples, (1) a vehicle wheel having a wall structure in which walls are formed on both edges of the base (Figs. 1, 2, 3, 5, 5, 7, 9 and 10) and (2) a vehicle wheel (see FIGS. 6, 8, and 11) having a support structure in which a support (including a core) is formed on the base. Forces explaining two types The vehicle tire to which the present invention is applied is not limited to a vehicle wheel having a wall structure or a column structure.

FIG. 1 is a schematic diagram for explaining an example of a vehicle tire to which the present invention is applied (FIG. 1 (a) is a schematic perspective view, and FIG. 1 (b) is a schematic cross-sectional view). The vehicle tire 1 shown here includes an annular vehicle tread 2 that constitutes the tire outer peripheral surface, and a vehicle wheel 3 to which the vehicle tread 2 is detachably attached. The surface of the vehicle tread 2 is A tread pattern for preventing slipping is formed.

[0037] As shown by A in Fig. 1 (a), the vehicle tread 2 is composed of a plurality of rod-like members 2a having elastic material force such as rubber material. Specifically, the rod-like member 2a is arranged in a vertical state from the base portion side (radially inner side of the vehicle wheel) of the vehicle tread 2 to the surface layer portion side (radially outer side of the vehicle wheel). Arranged so that the longitudinal direction of 2a and the radial direction of vehicle wheel 3 are aligned, rod-like members 2a are fixed to each other at random positions to constitute vehicle tread 2. That is, one bar-like member 2a is fixed at a different height from each of the adjacent bar-like members 2a. Here, the rod-shaped member 2a having a circular cross-section is taken as an example, but a bar-shaped member having a quadrangular cross-section, a rod-shaped member having a pentagonal cross-section, or the like may be used. Further, a tread for a vehicle may be configured by combining rod-shaped members having different cross-sectional shapes.

[0038] Here, in the present embodiment, as the vehicle tread 2, a force tread 2 that is explained by taking as an example a rubber tread 2 that is entirely made of an elastic material is necessarily used. The whole need not be made of an elastic material. For example, it may be a vehicle tread having a structure in which a rubber material is bonded to a substrate made of a hard material (steel plate).

[0039] Further, in this embodiment, the description is given by taking the cross-sectional plate-like vehicle tread 2 as an example. As shown in Figs. 4 (a) and 4 (b), Concave portions 2c are formed on the peripheral surface, or as shown in FIG. 4 (c), concave portions 2c are formed on the inner peripheral surface of the vehicle tread 2, and reinforcing plates 2d are formed at predetermined intervals in the circumferential direction of the concave portions 2c. Is preferable. FIG. 4 (a) shows a case where a single recess 2c is formed, and FIG. 4 (b) shows a case where two recesses 2c are formed.

[0040] The vehicle wheel 3 includes an annular base portion 3a and wall portions 3b provided on both edges of the base portion 3a. One end of a rod-like fixing member 5 (an example of a fixing member) that can move in the radial direction of the vehicle wheel 3 in the recess 4 is screwed into a nut 20 embedded in the vehicle trade 2, etc. By configuring the end to be located in the recess 4, the vehicle tread 2 is attached to the vehicle wheel 3 through a gap of 3 cm to 5 cm. [0041] It should be noted that the gap between the vehicle wheel 3 and the vehicle tread 2 is the type of vehicle using the vehicle tire, the application of the vehicle tire, the air suspension attached to the vehicle using the vehicle tire, etc. It will vary depending on.

[0042] Further, the outer diameter of the rod-shaped fixing member 5 is configured to be smaller than the inner diameter of the concave portion 4, and for the convenience of attaching and detaching the rod-shaped fixing member 5 (specifically, when screwing, or A partial region of the rod-like fixing member 5 is configured to have a polygonal cross section (for example, a hexagonal cross section) so that the work can be performed using a spanner or the like when releasing the screw.

Here, in the present embodiment, the rod-like fixing member 5 is described as an example in which the rod-like fixing member 5 is configured to be movable in the radial direction of the vehicle wheel 3. 2 is configured to be movable so that the impact received by the vehicle tread 2 can be absorbed by the movement of the vehicle tread 2, and the rod-like fixing member 5 is not necessarily in the radial direction of the vehicle wheel. No need to be configured to be movable.

Here, in this embodiment, the case where the vehicle tread 2 is attached to the vehicle wheel 3 by screwing one end of the rod-like fixing member 5 with the nut 20 and positioning the other end in the recess 4 is described. The force described as an example As long as the vehicle tread 2 can be attached to the vehicle wheel 3, it can be attached by any method. However, since the vehicle tread 2 is mounted so as to be movable inward in the radial direction of the vehicle wheel 3, it can be expected to absorb an impact by the amount of energy consumed by the movement of the vehicle tread 2. It is preferable that the tread 2 is attached so as to be movable radially inward of the vehicle wheel 3.

Furthermore, the rod-like fixing member 5 is sufficient if the vehicle tread 2 can be attached to the vehicle wheel 3, and is not necessarily fixed to the vehicle tread 2. Specifically, in this embodiment, the rod-like fixing member 5 and the vehicle tread 2 are fixed, but, for example, as shown in FIG. 5 (a), another member (inside the vehicle tread 2) ( In the case of FIG. 5 (a), the vehicle tread 2 may be attached to the vehicle wheel 3 by fixing the reinforcing ring 7) and the rod-like fixing member.

In FIG. 10, a guide plate 50 (an example of a guide) provided with a hole (not shown) is attached to the inner side of the wall portion 3b, and the vehicle wheel is mounted more than the guide plate 50. Radially inward The case where the receiving part 51 is provided is shown. That is, as a method of attaching the vehicle tread 2, a guide plate as shown in FIG. 10 without forming the recess 4 may be used.

[0047] The other end of the rod-shaped fixing member 5 has an inner diameter of the recess 4 such that the other end side of the rod-shaped fixing member 5 can move in the radial direction of the rod-shaped fixing member 5, and the rod-shaped fixing member is located in the vicinity of the inlet of the recess 4. By configuring the vicinity of the entrance of the recess 4 to such an extent that 5 cannot move in the radial direction, that is, by configuring the rod-shaped fixing member 5 to be movable with the vicinity of the entrance of the recess 4 as a fulcrum, The tread 2 can move in the width direction or circumferential direction of the vehicle wheel 3, and the vehicle tread 2 can move according to the ground contact surface, so that stable running can be expected.

In this embodiment, the case where the vehicle tread 2 is attached to the vehicle wheel 3 by the rod-like fixing member 5 is described as an example, but the fixing member is used for the vehicle. It is sufficient if the vehicle tread 2 can be attached to the wheel 3, and any member may be in any shape, and it is not necessarily a rod-like plate-like fixing member. A vehicle tread 2 may be attached to the wheel 3.

[0049] Further, the material of the nut 20 embedded in the vehicle tread 2 may be iron or a rigid plastic material instead. In addition, as shown in FIG. 1B, the nut 20 is provided with a first plate-like member 21 for reducing the vertical displacement, and also reduces the displacement in the twisting direction (rotating direction) due to tightening or the like. Therefore, it is preferable to provide the second plate-like member 22. Furthermore, the first plate-like member 21 and the second plate-like member 22 are rounded at the ends, for example, reducing damage to surrounding materials when subjected to vibration or impact during travel. realizable.

[0050] Here, in this embodiment, the vehicle tread 2 is composed of a plurality of rod-like members 2a, and each rod-like member 2a is arranged in a vertical state on the base portion side force surface layer side of the vehicle tread 2. As described above, the vehicle tread 2 is not necessarily composed of a plurality of rod-like members 2a, and each rod-like member 2a must be arranged vertically from the base side to the surface layer side of the vehicle tread 2. For example, as shown by B in FIG. 1 (a), it is composed of a plurality of plate-like members 2b, and each plate-like member 2b is arranged in a vertical state on the base layer side of the tread 2 for the vehicle. It may be done. [0051] Further, the vehicle tread 2 is formed by laminating a hollow cylindrical member 2e made of a rubber material rich in elasticity, for example, as indicated by C in FIG. 1 (a), or a rubber material rich in elasticity. The substantially U-shaped frame member 2f formed by the above structure may be laminated, or may be configured by the first rubber material rich in elasticity, as indicated by D in FIG. 1 (a). The hollow cylindrical member 2e is laminated in a state where the second rubber material softer than the first rubber material is filled in the hollow portion of the hollow cylindrical member 2e, or a substantially U-shaped frame made of the first rubber material rich in elasticity. The body member 2f may be laminated with the second rubber material filled more softly than the first rubber material.

[0052] In addition, since the vehicle tread 2 and the vehicle wheel 3 are configured as separate bodies, and the vehicle tread 2 is detachably attached to the vehicle wheel 3, the vehicle wheel The region formed by the base portion 3a of the vehicle 3 and the vehicle tread 2 (the region indicated by the symbol a in the figure) is open, that is, the region formed by the base portion 3a of the vehicle wheel 3 and the vehicle tread 2 Is not a sealed space like the air chamber of a conventional pneumatic tire. Here, “the area is open” means that the area formed only by the base portion 3a of the vehicle wheel 3 and the vehicle tread 2 is open. If a region formed by the base portion 3a of the vehicle wheel 3 and the vehicle tread 2 is open even if a separate body (for example, a support member described later) is filled, the “region” Is open to the public.

[0053] In addition, the vehicle tread 2 is pressed outward from the base portion 3a of the vehicle wheel 3 by expanding in a region formed by the base portion 3a of the vehicle wheel 3 and the vehicle tread 2. A tube 6 (an example of a repulsion part) is arranged. By pressing the vehicle tread 2 outward from the base portion 3a of the vehicle wheel 3 with the tube 6, the vehicle tread 2 is disposed at a position that holds a predetermined gap from the vehicle wheel 3. It becomes.

[0054] Here, in this embodiment, the force is described by taking the case where the tube 6 is used as an example of the repulsion part as an example. The repulsion part removes the vehicle tread 2 from the base part 3a of the vehicle wheel 3. It is sufficient if it can be pressed outward, and the tube 6 is not necessarily required.

FIG. 10 shows the case where the coil spring 8 is used as the repulsion part, and the vehicle tread 2 is attached to the vehicle wheel 3 by the coil spring 8 provided on the base part 3a of the vehicle wheel. Press outwardly from the base 3a of the base.

Further, in the present embodiment, the rod-shaped fixing member 5 is configured to be detachable from the recess 4 by making the outer diameter of the rod-shaped fixing member 5 smaller than the inner diameter of the recess 4, so that the annular vehicle As illustrated in FIG. 2, a stopper 5a is provided on the rod-shaped fixing member 5 and the wall 3b of the vehicle wheel 3 is illustrated. If the rod-shaped fixing member 5 is configured not to fall out of the recess 4 by providing the locking portion 4a and the stopper portion 5a and the locking portion 4a abut, the vehicle tread 2 must be It does not have to be annular, and may be divided in the circumferential direction.

In the vehicle tire configured as described above, when the vehicle tread 2 is attached to the vehicle wheel 3, first, a rod-shaped fixing member to the back of the recess 4 provided in the vehicle wheel 3. 5 is inserted, that is, substantially all of the rod-like fixing member 5 is inserted into the recess 4 so that the rod-like fixing member 5 protrudes only from the recess 4 (see FIG. 3A). ).

Subsequently, the vehicle tread 2 is fitted onto the vehicle wheel 3 (see FIG. 3 (b)), and then one end of the rod-like fixing member 5 is screwed into the nut 20 embedded in the vehicle tread 2. This completes the attachment of the vehicle tread 2 to the vehicle wheel 3 (see FIG. 3 (c)).

[0058] In the vehicle tire to which the present invention described above is applied, when the vehicle tread 2 receives an impact, the rod-like members 2a adjacent to each other function to restrain each other and prevent buckling. In addition, the vehicle tread 2 can sufficiently absorb the impact. Furthermore, the impact that the vehicle tread 2 could not absorb is absorbed when the vehicle tread 2 tries to move radially inward of the vehicle wheel 3 against the pressing force of the tube 6. Therefore, the impact received by the vehicle tread 2 can be absorbed sufficiently.

[0059] Further, even if the tread pattern of the vehicle tread 2 is worn out due to long-term use, it is sufficient to replace only the vehicle tread portion which is a worn portion, which is sufficient for resource saving. They can contribute and are economical.

[0060] In the vehicle tire to which the present invention is applied, the sidewall of the recess 4 and the side surface of the rod-shaped fixing member 5 come into contact with each other, and the movable range of the rod-shaped fixing member 5 is restricted. Deviation amount of the vehicle tread 2 screwed with the member 5 (deviation in the circumferential direction of the vehicle wheel) The amount of displacement of the vehicle tread 2 can be controlled to such an extent that it does not adversely affect the running of the vehicle.

[0061] Further, in the vehicle tire to which the present invention described above is applied, it is sufficient to replace only the worn vehicle tread as compared with a general-purpose pneumatic tire, which can greatly save raw materials. It can be said that it is economically superior while reducing wasteful use of resources. In addition, since an open area is formed between the vehicle wheel base and the vehicle tread, it is considered to be excellent in safety due to structural punctures and bursts. Furthermore, since there are no wall, shoulder and beat portions that are generally difficult to manufacture, the manufacturing process of the vehicle tread can be simplified.

FIG. 5 (a) is a schematic diagram for explaining a modified example (1) of an example of a vehicle tire to which the present invention is applied. In the vehicle tire 1 shown here, the vehicle tread 2 is An annular reinforcing ring 7 (an example of a reinforcing member) is provided on the inner side. Specifically, the vehicle tread 2 is screwed to the surface of the reinforcing ring 7. The other points are the same as in the example of the vehicle tire to which the present invention is applied.

[0063] As shown in Fig. 5 (b), the reinforcing ring 7 is constituted by a plurality of core members 7a connected in a rosary shape by a piano wire, a wire or the like. Tensile force is applied to the piano wires and wires to the extent that they receive compressive force from the adjacent core material 7a. Specifically, it is fixed in a state where a sufficient pressing force is applied to each core material _7a connected in a rosary shape with a piano wire or a wire. Each core member 7a is covered with an elastic material 7b (for example, a rubber material).

Here, in this embodiment, the case where the reinforcing ring 7 is provided inside the vehicle tread 2 has been described as an example. However, the reinforcing ring 7 receives the impact from the vehicle tread 2. It is sufficient that a repulsive force can be applied at this time, and it is not always necessary to install it inside the vehicle tread 2. As shown in FIG. 5 (c), it may be embedded in the vehicle tread 2. However, as shown in FIG. 5 (d), it may be provided inside the vehicle tread 2 and embedded in the vehicle tread 2.

[0065] The core material 7a arranged in an annular shape is covered with the elastic material 7b, and the main purpose is to prevent the core material 7a from damaging the vehicle tread 2. From the reinforcement phosphorus When embedding the groove 7 in the vehicle tread 2, it is not necessary to cover each core material 7a with the elastic material 7b.

[0066] In this embodiment, the force described by taking as an example the case where a plurality of core members 7a are annularly arranged as the reinforcing ring 7 is described. The reinforcing ring 7 functions like a spring and has an impact. For example, a steel sheet formed in an annular shape may be used.

[0067] In a modification (1) of an example of a vehicle tire to which the present invention is applied, when a deformation force is applied to the reinforcing ring 7, it functions so as to pile up the deformation force and restore it. When the vehicle tread 2 is subjected to an impact and tries to deform, the reinforcing ring 7 applies a force in the direction of holding the shape (annular shape) of the vehicle tread 2, and as a result, the vehicle tread It will be possible to absorb the impact received by DO2.

FIG. 6 is a schematic diagram for explaining a vehicle wheel in a modification (2) of an example of a vehicle tire to which the present invention is applied (FIG. 6 (a) is a schematic perspective view, 6 (b) is a schematic cross-sectional view), and in a modification (2) of an example of a vehicle tire to which the present invention is applied, a support core 11 (repulsion) described below is used instead of the tube 6 as a repulsion part. An example of a part) is provided. Other points are the same as in the example of the vehicle tire to which the present invention is applied.

[0069] The support core 11 shown here includes a first support 15a attached to the base 3a of the vehicle wheel 3, and a first support 15a attached to the base 3a of the vehicle wheel 3 in the same manner as the first support. A second strut 15b mounted so as to face the strut 15a with a predetermined distance, and a rod-like arm rotatably supported between the first strut 15a and the second strut 15b It consists of a part 16 and a support part 17 attached to one end of the arm part 16.

[0070] Now, when the vehicle wheel 3 rotates, the arm portion 16 receives centrifugal force due to the rotation of the vehicle wheel 3, so that the arm portion 16 rotates as the vehicle wheel 3 rotates. The support unit 17 moves up toward the vehicle tread 2 by standing up around the supported mandrel. When the arm portion 16 rises due to the centrifugal force, the other end of the arm portion 16 is fixed by the clamping type fixing member 18 attached between the first support column 15a and the second support column 15b, and the arm portion 16 rises. Thus, the vehicle tread 2 can be pressed outward from the base portion 3a of the vehicle wheel 3. Here, as shown in FIG. 6 (b), the rod-like arm portion 16 of the support core 11 has a support pipe 16A in which a hollow portion is formed and a coil spring 19 attached to an end portion. The coil spring 19 is composed of an intermediate support rod 16B which is pressed toward the vehicle tread 2 in the hollow portion of the support pipe 16A by the urging force of the coil spring 19.

[0072] In the modification (2) of the example of the vehicle tire to which the present invention is applied, the intermediate support rod 16B moves against the coil spring 19 when the vehicle tread 2 receives an impact. By doing so, the impact can be absorbed, and the impact received by the vehicle tread 2 can be sufficiently absorbed.

FIG. 7 is a schematic diagram for explaining a modification (3) of an example of a vehicle tire to which the present invention is applied. In the vehicle tire 1 shown here, a plurality of vehicles are arranged inside the vehicle tread 2. A support member 30 is provided. The support member 30 moves to the vehicle tread 2 side as the tube 6 expands, and the tube 6 presses the vehicle tread 2 outward from the base portion 3a of the vehicle wheel 3 through the support member 30. It will be. The support member 30 is provided with a guide portion 30a, and moves to the vehicle tread side along the guide groove 30b provided in the wall portion 3b of the vehicle wheel 3.

Here, in this modification, the case where a plurality of support members 30 are provided has been described as an example, but it is needless to say that a single annular support member 30 may be provided. It is.

In the modified example (3) of the example of the vehicle tire to which the present invention is applied, since the impact received by the vehicle tread 2 can be dispersed by the support member 30, the vehicle is more fully equipped. The impact on the tread 2 can be reduced.

Further, since the tube 6 presses the vehicle tread 2 via the support member 30, that is, the tube 6 and the vehicle tread 2 are not in direct contact with each other, the tube 6 is caused by the impact received by the vehicle tread 2. It is thought that there is less damage.

FIG. 8 is a schematic diagram for explaining another example of a vehicle tire to which the present invention is applied (FIG. 8 (a) is a schematic perspective view, and FIG. 8 (b) is a schematic cross section). The vehicle tire 1 shown here is composed of an annular vehicle tread 2 made of rubber material that constitutes the tire outer peripheral surface, and a vehicle wheel 3 to which the vehicle tread 2 is detachably attached. It has been.

[0077] The vehicle wheel 3 has an annular base portion 3a and an approximate center of the outer peripheral surface of the base portion 3a. The protrusion 3c is provided with a slot-shaped recess 4 formed in the protrusion 3c. One of the rod-like fixing members 5 that can move in the radial direction of the vehicle wheel 3 in the recess 4 is formed. The vehicle tread 2 is attached to the vehicle wheel 3 by having the end screwed with the nut 20 embedded in the vehicle tread 2 and the other end positioned in the recess 4. Note that the outer diameter of the rod-shaped fixing member 5 is configured to be smaller than the inner diameter of the concave portion 4, and for the convenience of attaching and detaching the rod-shaped fixing member 5 (specifically, when screwing or screwing). A partial region of the rod-shaped fixing member 5 is configured to have a polygonal cross section (for example, a hexagonal cross section) so that the work can be performed using a spanner or the like when releasing.

Further, a coil spring 8 (an example of a repulsion part) is disposed on the outer periphery of the protrusion 3c, and the vehicle tread 2 is pressed outward from the base 3a of the vehicle wheel 3 by the coil spring 8. Thus, the vehicle tread 2 is disposed at a position that holds a predetermined gap (for example, 3 cm to 5 cm) from the vehicle wheel 3.

FIG. 11 is a schematic diagram for explaining a modification of another example of a vehicle tire to which the present invention is applied (FIG. 11 (a) is a schematic perspective view, and FIG. 11 (b) is a schematic diagram). The vehicle tire 1 shown here includes an annular vehicle tread 2 made of a rubber material constituting the outer peripheral surface of the tire, and a vehicle wheel 3 to which the vehicle tread 2 is detachably attached. It is composed of

[0080] The vehicle wheel 3 includes an annular base 3a, cylindrical protrusions 53 provided near both edges of the outer peripheral surface of the base 3a, and both sides of the protrusions 53 in the circumferential direction. The coil spring 8 is arranged in the hollow portion of the protrusion 53, and the vehicle tread 2 is directed outward from the base portion 3a of the vehicle wheel 3 by the coil spring 8. Thus, the vehicle tread 2 is placed in a position that holds a predetermined gap (3 cm to 5 cm) from the vehicle wheel 3.

In addition, an elongated hole-like recess 4 is formed in the column 52, and one end of a rod-like fixing member 5 that is movable in the radial direction of the vehicle tread 3 is embedded in the vehicle tread 2. The vehicle tread 2 is attached to the vehicle wheel 3 by being configured so that the other end is positioned in the recess 4. The outer diameter of the rod-shaped fixing member 5 is configured to be smaller than the inner diameter of the concave portion 4, and the rod-shaped fixing member 5 is installed and removed for convenience. Therefore, the rod-like fixing member 5 has a polygonal cross section (for example, a hexagonal cross section). Configured).

[0082] In another example of a vehicle tire to which the present invention is applied and its modification, the vehicle tread 2 having a rubber material force can absorb when the vehicle tread 2 receives an impact. The shock that was not received is absorbed when the vehicle tread 2 tries to move inward in the radial direction of the vehicle wheel 3 against the pressing force of the coil spring 8, so that the vehicle tread 2 is sufficiently It can absorb the impact received.

[0083] Further, even if the tread pattern of the vehicle tread 2 is worn out due to long-term use, it is sufficient to replace only the vehicle tread portion that is a worn portion, which is sufficient for resource saving. They can contribute and are economical.

Further, in the vehicle tire to which the present invention is applied, the side wall of the recess 4 and the side surface of the rod-shaped fixing member 5 come into contact with each other, so that the movable range of the rod-shaped fixing member 5 is restricted. The amount of deviation of the vehicle tread 2 screwed with the member 5 can be controlled, and the amount of deviation of the vehicle tread 2 can be controlled to the extent that it does not adversely affect the running of the vehicle.

[0085] Further, in the vehicle tire to which the present invention described above is applied, it is sufficient to replace only the worn vehicle tread as compared with a general-purpose pneumatic tire, which can greatly save raw materials. It can be said that it is economically superior while reducing wasteful use of resources. In addition, since an open area is formed between the vehicle wheel base and the vehicle tread, it is considered to be excellent in safety due to structural punctures and bursts. Furthermore, since there are no wall, shoulder and beat portions that are generally difficult to manufacture, the manufacturing process of the vehicle tread can be simplified.

FIG. 9 is a schematic diagram for explaining still another example of a vehicle tire to which the present invention is applied (FIG. 9 (a) is a schematic perspective view, and FIG. 9 (b) is a schematic cross-sectional view. The vehicle tire 1 shown here is composed of an annular vehicle tread 2 having a rubber material force constituting the tire outer peripheral surface, and a vehicle wheel 3 to which the vehicle tread 2 is detachably attached. ing.

[0087] The vehicle tread 2 is provided with two concave portions 2c on the inner peripheral surface thereof, and reinforcing plates 2d are formed at predetermined intervals in the circumferential direction of the concave portion 2c. The vehicle wheel 3 has an annular base. It consists of a board part 3a and wall parts 3b provided on both edges of the base part 3a. A screw groove 40 is provided in the wall part 3b. Further, the recess 41 provided in the vehicle tread 2 has a bottom 43, and the bottom 43 is provided with a hole (not shown) for inserting the leg of the bolt 42. The tread 2 and the vehicle wheel 3 are attached by screwing using bolts 42.

It should be noted that, after the bolt 42 and the screw groove 40 are screwed together, the recess 41 is not provided in the recess 41 in order to flatten the outer peripheral surface of the vehicle tread 2 so as not to adversely affect traveling. The same kind of material (rubber material) as that used for the vehicle trade 2 is embedded!

[0088] Here, the material of the bolt 42 may be iron or a rigid plastic material instead of this. In addition, as shown in FIG. 9, the bolt 42 is provided with a first plate-like member 21 for reducing the vertical displacement, and a bolt 42 for reducing the displacement in the twisting direction (rotating direction) due to tightening or the like. It is preferable to provide two plate-like members 22. Furthermore, the first plate-like member 21 and the second plate-like member 22 are rounded at the ends, so that, for example, it is possible to reduce damage to surrounding materials when subjected to vibration or impact during travel. it can.

[0089] In addition, an elastic material 9 (an example of a repulsion part) such as a rubber material is disposed in an area formed by the base portion 3a of the vehicle wheel 3 and the vehicle tread 2 and receives an impact. When the vehicle trade 2 is deformed inward of the vehicle wheel 3, the inertia material 9 can absorb the impact.

[0090] It should be noted that the elastic material 9 is not in contact with the vehicle tread 2 and a predetermined gap, so that the vehicle tread 2 and the coasting material 9 are not in contact with each other in a normal state (V, state where the vehicle tread is not impacted). It is arranged through.

Here, in this embodiment, the case where the vehicle tread 2 and the coasting material 9 are arranged so as not to contact each other in a normal state is described as an example. However, the vehicle tread 2 absorbs the case. It is sufficient if the impact that can be generated can be absorbed by the coasting material, and there is no need to arrange the vehicle tread 2 and the coasting material 9 so that they do not contact each other under normal conditions. The tread 2 for use and the coasting material 9 may be arranged so as to contact each other.

However, by disposing the coasting material 9 through the vehicle tread 2 with a predetermined gap, the impact received by the vehicle tread is absorbed by the deformation of the vehicle tread (first stage shock absorption). Then, when the deformation of the vehicle tread 2 progresses and reaches the stage where it comes into contact with the elastic material 9, the elastic material 9 absorbs the impact of the vehicle tread 2 (the second stage of shock absorption) and so on. Therefore, it is preferable to dispose the inertia material 9 with a predetermined gap between the vehicle tread 2 and the vehicle tread 2 because it is considered that more effective shock absorption can be realized. .

In the vehicle tire to which the present invention described above is applied, when the vehicle tread 2 receives an impact, the elastic tread 2 has a strong impact that the vehicle tread 2 having a rubber material force cannot absorb. Since it is absorbed, the impact received by the vehicle tread 2 can be sufficiently absorbed.

[0093] Further, even if the tread pattern of the vehicle tread 2 is worn out due to long-term use, it is sufficient to replace only the vehicle tread portion which is a worn portion, which is sufficient for resource saving. They can contribute and are economical.

[0094] Further, in the vehicle tire to which the present invention described above is applied, it is sufficient to replace only the worn vehicle tread as compared with a general-purpose pneumatic tire, which can save a lot of raw materials. It can be said that it is economically superior while reducing wasteful use of resources. In addition, since an open area is formed between the vehicle wheel base and the vehicle tread, it is considered to be excellent in safety due to structural punctures and bursts. Furthermore, since there are no wall, shoulder and beat portions that are generally difficult to manufacture, the manufacturing process of the vehicle tread can be simplified.

Brief Description of Drawings

FIG. 1 is a schematic diagram for explaining an example of a vehicle tire to which the present invention is applied.

FIG. 2 is a schematic diagram for explaining a modification of the vehicle tire shown in FIG. 1.

FIG. 3 is a schematic view for explaining attachment of a vehicle tread.

FIG. 4 is a schematic diagram for explaining a modification of the vehicle tread.

FIG. 5 is a schematic diagram for explaining a modified example (1) of an example of a vehicle tire to which the present invention is applied.

FIG. 6 is a schematic diagram for explaining a vehicle wheel in a modification (2) of an example of a vehicle tire to which the present invention is applied. FIG. 7 is a schematic diagram for explaining a modification (3) of an example of a vehicle tire to which the present invention is applied.

[8] FIG. 8 is a schematic diagram for explaining another example of a vehicle tire to which the present invention is applied. [9] FIG. 9 is a schematic diagram for explaining still another example of a vehicle tire to which the present invention is applied.

[10] FIG. 10 is a schematic diagram for explaining a case where a coil spring is used as the repulsion part.

[11] FIG. 11 is a schematic diagram for explaining a modification of another example of a vehicle tire to which the present invention is applied.

[12] FIG. 12 is a schematic diagram for explaining a conventional solid tire.

Explanation of symbols

1 Vehicle tire

2 Vehicle tread

2a Rod-shaped member

2b Plate member

2c recess

2d reinforcement plate

2e Frame member

2f Tubular member

3 Hoiinore for vehicles

3a Foundation

3b wall

3c Projection

4 Recess

4a Locking part

5 Rod-shaped fixing member

5a Stopper part

6 tubes

7 Reinforcement ring a Core material

b Elastic material

Coil spring Elastic material

1 Support core 5a First support column 5b Second support column 6 Arm 6A Support pipe 6B Middle support rod 7 Support unit

8 Nipping type fixing member 9 Coil spring 0 Nut

1 First plate member 2 Second plate member 0 Support member 0a Guide part

0b Guide groove

0 Thread groove

1 Recess

2 Bonoreto

3 Bottom

0 Guide plate

1 Receiver

2 Column

3 Protrusion

Claims

The scope of the claims

[1] A vehicle tread that constitutes a tire outer peripheral surface;

A vehicle tire comprising a vehicle wheel to which the vehicle tread is detachably attached;

The vehicle tread and the vehicle wheel are configured as separate bodies, and the impact received by the vehicle tread is in an open area formed between the vehicle tread and a base portion of the vehicle wheel. Absorbing repulsion part was provided

A vehicle tire characterized by that.

[2] The vehicle tread is arranged through a predetermined gap with the vehicle wheel in a normal state, and is configured to be movable in a radial direction of the vehicle wheel when the vehicle tread receives an impact. The

The vehicle tire according to claim 1, wherein:

[3] The repulsion part absorbs an impact when the vehicle tread receives an impact exceeding a predetermined value.

The vehicle tire according to claim 1, wherein:

[4] The repulsion part imparts resistance to the vehicle tread against movement or deformation of the vehicle tread radially inward of the vehicle wheel.

The vehicle tire according to claim 1, wherein:

[5] The repelling part is arranged with a predetermined gap from the vehicular tread, and when the vehicular tread receives an impact exceeding a predetermined value, the vehicular tread is deformed and the repulsive part Abut

The vehicle tire according to claim 1, wherein:

[6] The vehicular tread is attached to the moving wheel in a radial direction of the vehicular wheel via a fixing member, and maintains a predetermined shape at a predetermined position by the fixing member.

The vehicle tire according to claim 1, wherein:

[7] A fixing member configured to be movable in a radial direction along a guide formed on the vehicle wheel, The vehicle tread is attached to the vehicle wheel via the fixing member, so that the vehicle tread is disposed with a predetermined gap from the vehicle wheel.

2. The vehicle tire according to claim 1, wherein the vehicle tread is configured to be movable in a radial direction of the vehicle wheel.

[8] The vehicle tread includes a plurality of rod-like members or plate-like members made of an elastic material, and each rod-like member or plate-like member has a longitudinal direction of the rod-like member or the plate-like member. Arranged along the radial direction

The vehicle tire according to claim 1, wherein:

[9] The vehicle tread has recesses formed on the inner peripheral surface, or recesses formed on the inner peripheral surface and provided with reinforcing members at predetermined intervals in the circumferential direction of the recess.

The vehicle tire according to claim 1, wherein:

[10] A reinforcing member arranged annularly in a state where each of the plurality of core members receives a compressive force is embedded in the vehicle tread, or radially inward of the vehicle wheel from the vehicle tread. Arranged

The vehicle tire according to claim 1, wherein: