KR100792991B1 - Vehicle Wheel - Google Patents

Abstract

SUMMARY OF THE INVENTION The present invention provides a wheel having a rim configured to prevent a bead portion of a tire from sliding on a contact surface with a rim or a bead portion rolled over from a rim, and is operated by air pressure inside the tire on the rim. By providing a projection that is, the internal air pressure of the tire pushes the projection provided on the surface of the rim to the bead to prevent the bead from slipping in the advancing direction of the rim, and to prevent the bead from slipping out of the rim while sliding outward. It was made possible.

Description

Automotive Wheel {Vehicle Wheel}

1 is a cross-sectional view of the main portion of an embodiment of the present invention

2 is a cross-sectional view of main parts of another embodiment of the present invention.

3 is an exemplary view of a protrusion that is a main part of the present invention.

Figure 4 is a cross-sectional view showing an example of the bead portion of the automobile tire used in the wheel of the present invention

<Explanation of symbols for the main parts of the drawings>

2 ............ rim

3 ............ Bead part of tire

4, 5 ......... through-hole

6 ............ Pressure transfer passage

7 ............ Protrusion

81 ............ forced piston

82 ............ action piston

9 ............ Spring

The present invention is to provide a rim configured to prevent the bead portion of the tire from sliding on the contact surface with the rim or the bead portion rolls off from the rim.

The slip phenomenon of the tire bead portion generated when the vehicle is driven causes a slip of the tire seated on the rim during braking, which causes a decrease in braking performance. In addition, due to the rapid sliding between the bead portion and the wheel friction occurs on the bottom surface of the bead and the rim resulting in heat generation and damage to the bead portion.

In addition, there is a possibility that a roll-over phenomenon, in which the tire is released from the rim, may occur during a high-speed abrupt cornering of the vehicle. Also, in the adoption of a technology for preventing such roll-over, the tire is punctured. Even in run-flat tires that can ensure safety even in the event of a burnout, a technique for preventing slip of the bead portion and detachment of the tire has become very important.

Therefore, in order to prevent the bead slip and the detachment of the tire as described above, there have conventionally been formed a comb pattern or fine uneven portion on the bottom surface of the bead, and recently, grooves in the rim and protrudes a portion of the bottom of the bead And a method of preventing slipping by combining the protrusions have been proposed. However, the above methods have the drawback that the nonuniform contact between the bead and the rim or deformation of the tire occurs when the tire is mounted and removed.

Accordingly, the present invention, by installing a projection that is operated by the air pressure inside the tire on the rim, to prevent the projection from the rim while the bead slips in the running direction or the bead slips in the outward direction by pressing the bead with the air pressure of the tire When the present invention will be described with reference to the accompanying drawings as follows.

The present invention is characterized in that it is an automobile wheel formed by forming a protruding portion (7) which is protrudingly mounted on the rim (2) where the bead portion (3) of the tire is located. In order to install the projection 7 on the rim 2 so that it can be projected, the present invention is to install the through hole 5 in the bead installation portion of the rim 2, and to install the protrusion 7 in the through hole 5, The bottom part of the protrusion part 7 is installed in the cylinder 71, maintaining airtightness, and is installed so that the cylinder 71 may communicate with the inside of a tire via the through hole 4 through the pressure transmission path 6. Thus, when the air is pressurized into the tire, the internal air pressure of the tire acts to cause the protrusion 7 to go outward through the through hole 4 and the pressure transfer path 6.

It is preferable that the path through which the internal air pressure transmits the pressure to the protrusion is as described above, but as shown in FIG. 2, the oil pressure for the hydraulic device is filled in the pressure transmission passage 6, and the pressure is applied to the through hole 4 side. The piston 81 is provided, and the working piston 82 is provided on the through hole 5 side of the bottom of the bead part 3, and the protrusion 7 can be formed on the working piston 82. By making the cross sectional area of the urged piston 81 larger than the cross sectional area of the working piston 82, the working force can be increased on the principle of lever.

Then, the protrusions 72 are formed on the surface of the protrusions 7, or the recesses 31 corresponding to the shape of the protrusions 7 are formed on the beads 3 to further slip the beads 3. Can be reduced.

According to the present invention configured as described above, when the air is pressurized into the tire, the air pressure inside the tire is transmitted to the protrusion 7 through the through hole 4 and the pressure transmission path 6, so that the protrusion 7 protrudes toward the bead 3. While the projections 72 formed on the surface of the protrusions 7 are embedded in the bead portion 3 to prevent the bead portion 3 slipping.

Then, by forming the recess 31 corresponding to the shape of the protrusion 7 at the bottom of the tire bead 3, when the protrusion 7 enters the recess 31, the sliding of the bead 3 is perfectly performed. I can eliminate it.

The projections 7 need to be provided with restoring means for restoring the projections 7 back below the surface of the rim when the air pressure of the tire is lowered. The present invention provides a spring 9 to the projections 7 for this purpose. Installed. By the way, the hydraulic pressure oil is filled in the pressure transmission passage 6, the piston 81 is provided on the through hole 4 side, and the actuating piston 82 is provided on the through hole 5 side of the bottom of the bead part 3. In the case of the embodiment in which the projection 7 is formed in the working piston 82, the restoring spring 91 may be installed in the piston 81 that is forced as shown in FIG.

According to the present invention configured as described above, when the air is pressurized into the tire, the air pressure is transmitted to the protrusion 7 through the through hole 4 and the pressure transfer passage 6, so that the protrusion 7 protrudes toward the bead 3, and the protrusion 7 The projections 72 formed on the surface are embedded in the bead portion 3 to prevent slippage of the bead portion 3, thereby reducing the risk of deterioration of braking performance due to the sliding of the bead portion, furthermore, There is an effect that can greatly prevent the roll-over phenomenon of the tire due to the slip.

Claims (8)

delete In the case where the protrusions 7 are mounted on the rim 2 where the bead part 3 of the tire is located, the protrusions 7 are mounted so that the protrusions 7 are mounted so that the bead installation portion of the rim 2 is formed. It has a working piston 82 installed while maintaining airtightness in the cylinder 71 provided in the through hole 5 formed in the through hole 5, the cylinder 71 communicates with the inside of the tire via the through hole 4 through the pressure transfer passage 6; Car wheel, characterized in that the installation. The pressure transmission passage (6) according to claim 2, wherein the pressure transmission passage (6) is filled with oil for hydraulic equipment, and a piston (81) is provided on the through hole (4) side, and the through hole (5) of the bottom of the bead portion (3) is provided. Car wheel, characterized in that the working piston 82 is installed on the side. 4. An automobile wheel according to claim 3, characterized in that the cross sectional area of the force piston (81) is made larger than the cross sectional area of the working piston (82). delete 3. The wheel for an automobile according to claim 2, wherein a spring (9) is provided at the bottom of the projection (7). 5. An automobile wheel according to claim 3 or 4, characterized in that a spring (91) is provided at the bottom of the forced piston (81). The wheel for an automobile according to any one of claims 2 to 4, wherein the bead portion (3) is provided with a recess portion (31) corresponding to the shape of the protrusion portion (7).

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