JP3029508U - Model car tires - Google Patents

Abstract

(57) [Summary] (Correction) [Problem] To provide a tire capable of stable running and stable handling even during severe use such as high-speed running, sudden steering, or sudden start and braking. The tire main body (1) and a laminate (2) laminated on the inner circumference of the tire main body (1), which is flexible and has a smaller elongation than the tire main body (1).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a model vehicle tire suitable for high speed running.

[0002]

[Prior art]

 As shown in FIGS. 6 to 8, the conventional model automobile tire (B) is a molded product made entirely of rubber. Therefore, even when a model car is driven at a high speed of 50 to 80 km / h as in recent years, as shown in Fig. 6, the centrifugal force causes the tire (B) to swell, and a material with a strong grip is used. However, there was a problem that the ground contact area was reduced and stable handling was not possible. In addition, when the steering wheel is turned suddenly to change the direction while driving, as shown in Fig. 7, the tire (B) is twisted and the handling reaction drops extremely, or in extreme cases the handling becomes impossible, The tire (B) was sometimes detached from the wheel (3 '). In addition, as shown in Fig. 8, the tire (B) may be pulled and displaced when the vehicle starts or brakes suddenly, which may reduce the acceleration performance or cause the brakes to not work, so it cannot be used under severe conditions. There is a problem.

[0003]

[Problems to be solved by the device]

 The problem to be solved by the present invention is to develop a tire capable of stable running and stable handling even under severe use such as high-speed running, sudden steering or sudden starting / braking.

[0004]

[Means for Solving the Problems]

 The model automobile tire (A) of "claim 1" is laminated on the "tire body (1) and the inner periphery of the tire body (1), and has flexibility and a tire body (1). ) It is composed of a laminate (2) having a smaller elongation. ”

According to this, when traveling at high speed, the tension caused by the centrifugal force is applied to the laminate (2) having a smaller elongation than the rubber laminated on the inner circumference of the tire body (1), and the tire body (1) The swelling and deformation are less likely to occur, and stable driving is possible even at the time of severe use such as high-speed running, sudden steering or sudden start / break.

"Claim 2" is Example 1 (A1) of a model automobile tire (A), in which the laminate (2) is a fiber or cloth and the fiber direction is specified. (1) and the fiber or cloth disposed on the inner circumference of the tire body (1) in at least one of the circumferential direction of the tire body (1) and the direction perpendicular to the circumferential direction. The laminated body (2) is laminated. ”

According to this, when the tire body (1) tries to swell in the direction in which its diameter increases due to centrifugal force during high-speed traveling, or when the tire (A) touches down due to sudden start and sudden braking. Even if it tries to expand partially, most of the tension and grounding force based on the centrifugal force are carried by the circumferential fibers laminated on the inner circumference of the tire body (1) to prevent deformation of the tire body (1). It will prevent and guarantee stable driving. Further, the fibers in the direction perpendicular to the circumferential direction also become the resistance force when the center part of the tire (A) is about to bulge in an arcuate cross section due to the high speed running of the tire (A) as shown in FIG. It works to prevent the tire (A) from expanding.

[0008] "Claim 3" is Example 2 (A2) of a model automobile tire (A), in which the laminate (2) is a fiber or cloth and the fiber direction thereof is specified. 1) and a laminated body (2) of fibers or cloth arranged in the inner circumference of the tire body (1) such that the fiber direction thereof is inclined with respect to the circumferential direction of the tire body (1). I'm characteristic.

According to this, when the steering wheel is suddenly turned during high-speed running, the tire (A) tends to twist in the direction in which it disengages from the wheel, but the direction of the force is the circumferential direction of the tire body (1). It is a direction that is inclined with respect to the direction and substantially coincides with the fiber direction of the laminate (2), and it is possible to prevent derailment due to twisting of the tire (A).

[0010] "Claim 4" is Example 3 (A3) of the model automobile tire (A), wherein the laminate (2) is a fiber or cloth and is composed of two layers, and the fiber direction of each layer Is defined. One layer is "the direction in which the fiber direction coincides with the circumferential direction of the tire body (1)" and the other layer is in the "bias direction". High speed running is achieved by the laminate (2) of these two fibers or cloths. Swelling of the tire (A) at the time of traveling, deformation of the tire (A) at the time of rapid start, twisting of the tire (A) due to sudden handling at high speed, etc. can be completely prevented, and extremely stable running is realized.

[0011] "Claim 5" defines the material of the laminate (2) and is characterized in that "the laminate (2) such as fiber or cloth is formed of aramid fiber". According to this, since it has excellent heat resistance and almost no elongation, it not only can withstand the high temperature during tire formation, but also the material (B) swells during high-speed running and during rapid start-up. It is possible to completely prevent the deformation of the tire (A) and the twisting of the tire (A) due to the sudden steering wheel during high speed driving.

[0012]

【Example】

 Hereinafter, the present invention will be described in detail with reference to illustrated embodiments. The model vehicle tire (A) of the present invention comprises a tire body (1) and a laminated article (2) (a cloth in this embodiment) integrally laminated on the inner circumference thereof as shown in FIGS. It is composed of. The tire body (1) is made of rubber and is attached to the outer periphery of the foil (3), and the ears (4) of which are fitted in the groove (5) on the outer periphery of the wheel (3). It is crowded. The material of the rubber is not particularly limited, but is appropriately selected according to the application, and for racing, a soft rubber having a large grip is used. Moreover, a trad is engraved on the outer peripheral surface thereof as required.

Between the inner circumference of the tire (A) and the outer circumferential surface of the wheel (3), a sponge (6) which is a substitute for a tube is arranged to keep the shape of the tire (A). . When the tire (A) is fitted into the wheel (3), it is fixed with an adhesive so that they will not shift.

As the laminate (2) laminated on the inner circumference of the tire (A), cloth is generally used, but fibers (or yarns) may be used. The fiber direction is the circumferential direction of the tire main body (1), the direction perpendicular to the circumferential direction of the tire main body (1), the circumferential direction of the tire main body (1) + the direction perpendicular to the circumferential direction (= for cloth), The direction in which the tire body (1) is inclined with respect to the circumferential direction (= bias direction) may be mentioned. The number of laminated layers (2) such as fibers or cloths is 1 or more. When the number of laminated layers is 2, a combination of A << circumferential direction of tire body (1) + direction inclined with respect to circumferential direction of tire body (1) (= bias direction) >>, B << direction perpendicular to circumferential direction + A combination of the direction inclining with respect to the circumferential direction of the tire body (1) (= bias direction), C << circumferential direction of tire body (1) + direction orthogonal to circumferential direction (= for cloth) and tire body A combination of (1) direction inclining with respect to the circumferential direction (= bias direction) >> is conceivable.

The material of the fiber or cloth laminate (2) to be laminated is not particularly limited as long as it is flexible and has a smaller elongation than rubber, but in consideration of heating during manufacturing. It is preferable that it has excellent heat resistance and a small tensile elongation in consideration of strength during use. A aramid fiber woven fabric is used in this embodiment. When the number of laminated layers is one (A1) (A2), the fibers are arranged so that the fiber direction is the circumferential direction of the tire (A) and the direction perpendicular to the circumferential direction, or in the bias direction. In the case of the cloth (A3), one of the cloths is arranged in the circumferential direction of the tire (A) and a direction perpendicular to the circumferential direction, and the other is arranged in the bias direction. The laminated woven fabric is embedded in the inner peripheral surface of the tire main body (1) in a band shape and integrated with the tire main body (1).

Model cars to which such tires (A) are applied are mainly model cars of radio control operation, and there are motor-driven cars and engine-driven cars. Especially, engine-driven cars can run at high speed. is there.

However, when a model car in which the tire (A) is attached to the wheel (3) is run by radio control operation, when the vehicle is running at high speed, centrifugal force acts on the tire (A) that is rotating at high speed. Then, it tries to swell in the direction in which its diameter increases. However, the tension resulting from the centrifugal force is applied to the laminate (2) such as fibers or cloth laminated on the inner circumference of the tire body (1), and the tire body (1) is unlikely to swell or deform. In particular, when the fiber direction is the circumferential direction, the direction in which the tension is applied matches the fiber direction, and the swelling of the tire (A) is effectively prevented. The same applies when suddenly starting or braking, preventing the tire (A) from deforming at the ground contact area.

In addition, in order to match the course and to prevent contact and collision with other model cars in the vicinity, the steering wheel may be turned suddenly during high speed driving. In that case, the force applied to the tire (A) is The tire (A) is twisted with respect to the circumferential direction of the tire (A). In this case, if the fiber direction of the laminate (2) is the inclination direction (bias direction) with respect to the circumferential direction of the tire (A), the fiber direction and the direction of the deforming force are substantially the same, and the tire (A) Prevents derailment due to twisting. As a result, it is possible to realize much more stable running than the conventional tire (A) made of only rubber. Since the laminate (2) has flexibility, the performance of the tire (1) is not impaired.

[0019]

[Effect of device]

 According to the present invention, a laminated material such as fiber or cloth having a smaller elongation than the tire is laminated on the inner circumference of the tire main body, so that it can be used for severe driving such as high speed running, sudden steering or sudden start / braking. It also enables stable running.

[Brief description of drawings]

FIG. 1 is a sectional view of a tire according to the present invention.

FIG. 2 is a sectional view of a first embodiment of a tire according to the present invention.

FIG. 3 is a sectional view of a second embodiment of a tire according to the present invention.

FIG. 4 is a sectional view of a tire according to a third embodiment of the present invention.

FIG. 5 is a front sectional view of a tire according to the present invention.

FIG. 6 is a cross-sectional view showing swelling of a conventional tire at high speed running.

FIG. 7 is a cross-sectional view showing a twist of a tire that occurs when a conventional tire changes its direction.

FIG. 8 is a front cross-sectional view showing the deformation of a conventional tire at the time of sudden start and sudden braking.

[Explanation of symbols]

 (A) ... Tire (1) ... Tire body (2) ... Fiber or cloth laminate

Claims (5)

[Scope of utility model registration request] 1. A model vehicle, comprising: a tire main body; and a laminate laminated on the inner circumference of the tire main body and having flexibility and a smaller elongation than the tire main body. tire. 2. A tire main body and fibers laminated on the inner circumference of the tire main body, the fiber direction of which is at least one of the circumferential direction of the tire main body and the direction perpendicular to the circumferential direction, or A model automobile tire characterized by being formed of a laminate of cloth. 3. A tire body and a laminated body of fibers or cloth arranged in an inner periphery of the tire body in a direction in which the fiber direction is inclined with respect to the circumferential direction of the tire body. Characteristic model car tires. 4. A tire body, and a laminate of fibers or cloth disposed on the inner circumference of the tire body in at least one of the circumferential direction of the tire body and the direction perpendicular to the circumferential direction. A model automobile tire characterized in that a laminate of fibers or cloth arranged in a direction in which the fiber direction is inclined with respect to the circumferential direction of the tire body is laminated. 5. The model vehicle tire according to claim 1, wherein the fiber or cloth laminate is formed of aramid fiber.