JPH0589004U - Vehicle wheels - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To provide a vehicle wheel capable of satisfying both cushioning and agility at the same time while traveling. [Structure] The diameter of the rim 3 of the wheel 1 on the outer side of the vehicle body is made larger than the diameter of the rim 4 on the inner side of the vehicle body, and the tire 2
The bead portion is also formed by forming the bead portion 5 outside the vehicle body larger than the bead portion 6 inside the vehicle body so as to correspond to the diameter of the rim. Even if there is an impact during running, the tire portion inside the vehicle body, which has a high flatness rate, can absorb this impact and always have good cushioning performance, and the bead portion outside the vehicle body has a large diameter. Also, when the car is curved, a sharp movement is possible even when the center of gravity is applied to the outside. When the annular protrusion 8 is provided on the bottom of the rim, it is possible to drive the tire even when the bead portion of the tire comes off the rim or is punctured.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle wheel in which a tire is attached to a wheel for use.

[0002]

[Prior Art]

 In a conventional vehicle wheel, the outer diameter of the wheel, that is, the diameter of the tip of the rim of the wheel is the same on the outside and the inside. For example, if the size is 14 inches, the tip of the rim on the inside of the wheel body also Both rim tips were 14 inches. Similarly, in the tire attached to the tire, the outer bead portion and the inner bead portion had the same diameter.

[0003]

[Problems to be solved by the device]

 As the types of vehicles have diversified, it has become necessary to have agile movements and good cushioning properties while driving.However, as mentioned above, the shape of the wheel requires that the wheel rim diameter and the tire bead be different. It is natural that the diameters of the parts are the same inside and outside, and it is not possible to change the diameter, so the tread pattern and flatness of the tires have been changed, and improvements have been made.

However, it is difficult for such a means to satisfy the cushioning property and the agility at the same time during traveling. For example, conventionally used radial tires mainly have an aspect ratio of 82%, and because the tire has a considerable length from the contact surface to the bead, the tire is subject to impact during running. Even after receiving the impact, the bending of the body of the tire made it easier to absorb the impact, but when the vehicle bends while traveling, centrifugal force acts and the degree of bending of the body of the tire increases, I could only move slowly. Therefore, in order to speed up the operation of the car, tires with a low tire flatness ratio of 65% or 55% have come to be attached to the car and used. Although it can operate properly even when turning, the length of the trunk that reaches the bead from the ground contact surface of the tire is small, so it is difficult to absorb the impact due to the bending of the trunk, and the ride comfort of the car is It was bad.

Therefore, an object of the present invention is to provide a vehicle wheel that improves on the conventional drawbacks and satisfies both the cushioning property and the agile movement during traveling of the vehicle.

[0006]

[Means for Solving the Problems]

 The present inventor solves the above problem by paying attention to the fact that the center of gravity is applied to the outside when a car bends, and the diameter of the bead portion of the tire (that is, the flatness of the tire) is changed between the outside and the inside. did.

That is, in the wheel of the present invention, the diameter of the rim on the outside of the vehicle body of the wheel is made larger than the diameter of the rim on the inside of the vehicle body, and the diameter of the bead portion of the tire attached thereto corresponds to the diameter of the rim. As described above, the bead portion outside the vehicle body is formed larger than the bead portion inside the vehicle body.

[0008] Such a wheel is a portion inside the vehicle body where the height of the tire (the distance from the bead portion to the ground contact surface) is large even if the tire has an impact during running, and this impact is moderated. Therefore, it is possible to travel with good cushioning at all times. In addition, the diameter of the bead outside the vehicle body of the tire is large (the flatness is low), so it is possible to move sharply even when the center of gravity is applied to the outside, such as when the car bends. Become.

In such a wheel of the present invention, the material and shape of the wheel and the tire may be the same as those conventionally known except that the diameters of the rim and the bead portion are changed, but when the tire is punctured. In order to prevent the tire from coming off the wheel, it is preferable to provide an annular protrusion on the body of the wheel as shown in Japanese Utility Model Publication No. 1-15523.

That is, the wheel may be an ordinary wheel in which the protrusion does not exist in the annular body, but an annular protrusion having a diameter larger than the tip of the rim outside the vehicle body may be provided in the center of the outer periphery of the annular body. Even if the tire is provided and the tire is damaged, it is preferable that the inner surface of the tire is retained by the annular protrusion to enable stable running. In this case, the annular protrusion is provided with at least one groove that cuts across the protrusion, and one bead portion of the tire having a diameter smaller than that of the annular protrusion is passed through this groove to pass through one of the rims of the wheel. From one side to the other rim side so that the tire can be fitted to the wheel. The depth of this groove is set so that the bead portion of the tire, which has a smaller diameter than the annular protrusion, can pass through with good operability when the tire is installed. It is better to form it 1.5 times or more, especially 2 times or more. Here, the depth of the groove means the distance from the outer peripheral surface of the annular protrusion to the bottom of the groove. Further, it is preferable that the groove has a narrow upper portion and a wide lower portion in terms of both the wearability of the tire and the stability after the tire is mounted.

The shape of the annular protrusion varies depending on the type and size of the vehicle, the width of the wheel, and the like, but it is usually formed so that its cross section is T-shaped or inverted L-shaped. Preferred. When a tire with a large diameter is used, such as a wheel of a bus, a truck, or an airplane, a detachable annular appendage may be provided by further dividing the wheel into an annular protrusion. There is a limit to the height of the annular protrusion that can be provided on the wheel from the standpoint of tire wearability, but when such an annular appendage is provided, one bead portion of the tire is Assemble this annular appendage between the bead portion of the tire and the annular protrusion, transferred to the other of the annular protrusions through the groove, attach the annular appendage to the annular protrusion, and then attach the bead portion of the tire. By mounting it on the rim tip of the wheel, even wheels such as buses can be driven more stably when the tire is damaged.

[0012]

【Example】

 An example of the present invention will be described with reference to the drawings. In the example of FIG. 1, in a vehicle wheel in which a tire 2 is attached to a wheel 1, the rim 3 on the outer side of the vehicle body of the wheel 1 has a diameter of 16 inches, and the rim 4 on the inner side of the vehicle body has a diameter of 14 inches. .. Also, as a matter of course, the bead portion of the tire 2 is formed so that the diameter of the bead portion 5 on the outer side of the vehicle body is 2 inches larger than the diameter of the bead portion 6 on the inner side of the vehicle body so as to correspond to the diameters of the rims 3 and 4. Has been done.

When such a wheel is attached to the vehicle body, it exhibits the same effect as when a tire having a low flatness ratio is used on the outside of the vehicle body, and operates quickly and accurately even when turning a sharp curve. In addition, since the same effect as using tires with a high flatness ratio and easy to absorb impact can be achieved inside the vehicle body, a ride comfort with good cushioning is always guaranteed.

In this example, an annular protrusion 8 having a diameter larger than that of the tip of the rim 3 outside the vehicle body is provided at the center of the outer periphery of the annular body 7 of the wheel 1. A groove 9 is provided to cut across the portion 8 (see FIGS. 2 and 3), and the depth of the groove 9 is more than twice the height at which the annular protrusion 8 protrudes from the tip of the rim 3 outside the vehicle body. Also, since the lower part of the groove 9 is formed wide, the bead portion 5 of the tire 2 is directed from the rim 4 on the inner side of the vehicle body of the wheel 1 to the rim 3 on the outer side, and the groove 9 is formed. Through this, the tire 2 can be stably attached to the wheel 1.

Therefore, in this example, even if the tire 2 is punctured during traveling, or the bead portion 5 or 6 of the tire 2 comes off the rim 3 or 4 of the wheel 1 due to unreasonable traveling, 2 is held on the surface of the annular protruding portion 8 and can stably run for a long distance.

Next, as another example of the present invention, the wheel of FIG. 4 has a ring-shaped protrusion 8 and a ring-shaped appendage 10 which covers the entire outer peripheral portion of the wheel in at least two parts and is detachably mounted. It is attached. In this case, even if the annular protrusion 8 is not formed so high, the presence of the annular appendage 10 forms a high supporting plane that keeps the back surface of the tire 2 stable when the tire 2 is damaged. This is particularly effective for wheels such as buses and trucks in which the tire 2 has a large height and width.

In this example, the ring-shaped appendage 10 is bolted to the ring-shaped protrusion 8, but the bolt hole has the ring-shaped appendage 10 when the tire straddles the ring-shaped protrusion 8. It is installed at a position substantially the same as or higher than the flange of the rim tip (outer side) so that the mounting operation can be performed between the wheel and the wheel rim. The annular appendage 10 preferably has a substantially inverted L-shaped, F-shaped or T-shaped cross section having a flat surface portion on the outer periphery, as illustrated in FIG. 5, and the ends of the outer peripheral flat portion are fitted to each other. It is composed of 2-4 semi-circular or fan-shaped members that can be fitted together, and when mounted on an annular protrusion, the outer peripheral flat surface portion of each member is continuous and is a true concentric with the annular body. It is preferable to draw a circle.

[0018]

[Effect of the device]

 The wheels of the present invention have tires attached to the wheels, but the diameters of the wheels and tires are changed on the outside and inside of the vehicle body. To do.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of a wheel of the present invention.

2 is a plan view of the wheel of the wheel of FIG. 1. FIG.

3 is a cross-sectional view of the wheel of FIG.

FIG. 4 is a sectional view showing an example of a wheel of the present invention.

5 is a cross-sectional view of essential parts showing a modified example of the wheel of the wheel shown in FIG.

[Explanation of symbols]

 1 wheel 2 tire 3 rim outside vehicle body 4 rim inside vehicle body 5 bead portion outside vehicle body 6 bead portion inside vehicle body 7 annular body portion 8 annular protruding portion 9 groove 10 annular appendage

Claims (4)

[Scope of utility model registration request] 1. In a vehicle wheel in which a tire 2 is attached to a wheel 1, a diameter of an outer rim 3 of the wheel 1 is formed larger than a diameter of an inner rim 4 of the wheel 1, and a bead of the tire 2 is formed. A vehicle wheel characterized in that a bead portion (5) outside the vehicle body is formed larger than a bead portion (6) inside the vehicle body so that the diameter of the portion corresponds to the diameter of the rims (3, 4). 2. The diameter of the rim 3 of the wheel 1 on the outer side of the vehicle body is formed larger than the diameter of the rim 4 of the inner side of the vehicle body. An annular protrusion 8 having a diameter larger than the tip is provided, at least one groove 9 for cutting across the protrusion 8 is provided in the annular protrusion 8, and the depth of the groove 9 is determined by the annular protrusion 8 2. The vehicle wheel according to claim 1, wherein the height is 1.5 times or more the height protruding from the tip of the rim 3 outside the vehicle body. 3. The annular protrusion 8 is detachably attached to the annular protrusion 8 in at least two parts so as to cover the entire outer peripheral portion thereof.
Vehicle wheels. 4. The tire according to claim 1, wherein the diameter of the bead portion 5 on the outer side of the vehicle body of the tire 2 is larger than the diameter of the bead portion 6 on the inner side of the vehicle body.