The second spring of a car wheel

Abstract

This invention provides a spring for car wheels that can absorb even large vibrations by having the forces of the first and second springs reinforce each other during strong vibrations. [Solution] The first spring 1 and the second spring 2 are passed between the spring stopper 3 and the damper shaft 4, with the second spring 2 placed outside the first spring 1. When the damper shaft 4 is extended, the second spring 2 does not contact the spring stopper 3 and there is a gap between them, and when the damper shaft 4 is compressed, the second spring 2 contacts the spring stopper 3 and there is no gap.

Description

Technical Field

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[0001] This invention relates to the second spring of a vehicle wheel.

Background Art

[0002] Conventionally, the elastic energy of the spring constant of the spring of a vehicle wheel was constant, and large vibrations could not be absorbed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Summary of the Invention

Problems to be Solved by the Invention

[0004] This had the following drawbacks. Conventionally, the elastic energy of the spring constant of the spring of a vehicle wheel was constant, large vibrations could not be absorbed, and there was no secondary spring to assist the main spring. Also, since the third coil spring (33) of Patent Document 2 was placed inside the first coil spring (31), the third coil spring (33) was structurally small, weak, short, and insufficient to assist the first coil spring (31), resulting in a weak effect. This invention was made to eliminate the above-mentioned drawbacks.

Means for Solving the Problems

[0005] The first spring (1) and the second spring (2) are passed between the spring stopper (3) and the damper shaft (4), with the second spring (2) placed on the outside of the first spring (1). When the damper shaft (4) is extended, the second spring (2) does not contact the spring stopper (3) and there is a gap between them, and when the damper shaft (4) is compressed, the second spring (2) contacts the spring stopper (3) and there is no gap. This invention is a second spring for a car wheel, having the above configuration. [Effects of the Invention]

[0006] During large vibrations, the forces of the first spring (1) and the second spring (2) reinforce each other, allowing even large vibrations to be absorbed. Therefore, thanks to the second spring with a high coefficient of restitution, it moves smoothly without any jerky movements. [Brief explanation of the drawing]

[0007] [Figure 1] This is a front view of the present invention. [Figure 2] This is a cross-sectional view of the present invention. [Figure 3] This is a plan view of the present invention. [Figure 4] This is an explanatory diagram of the cross-section when the second spring (2) is compressed. [Figure 5] This is an explanatory diagram of the cross-section when the second spring (2) is extended. [Figure 6] This is an explanatory diagram of a cross-section when there is no gap between the second spring (2) and the spring stopper (3). [Figure 7] This is an explanatory diagram of a cross-section when there is an opening between the second spring (2) and the spring stopper (3). [Figure 8] This is Figure 2 of Patent Document 2. [Figure 9] This graph shows the relationship between the length and strength of the spring in this invention. [Figure 10] This is a graph showing the relationship between the length and strength of the spring described in Patent Document 2.

Best Mode for Carrying Out the Invention

[0008] Hereinafter, the embodiments for carrying out the present invention will be described. Pass the first spring (1) and the second spring (2) between the spring stopper (3) and the damper shaft (4), and place the second spring (2) outside the first spring (1). When the damper shaft (4) is extended, the second spring (2) does not contact the spring stopper (3) and there is a gap. When the damper shaft (4) is contracted, the second spring (2) contacts the spring stopper (3) and there is no gap. Therefore, during large vibrations, the forces of the first spring (1) and the second spring (2) reinforce each other, and even large vibrations can be absorbed.

Explanation of Reference Numerals

[0009] 1 First spring 2 Second spring 3 Spring stopper 4 Damper shaft 5 Damper stopper 6 Damper case 7 Damper oil

Claims

[Claim 1] A spring for a car wheel, characterized in that a first spring (1) and a second spring (2) are passed between a spring stopper (3) and a damper shaft (4), with the second spring (2) placed outside the first spring (1), and when the damper shaft (4) is extended, the second spring (2) does not contact the spring stopper (3) and there is a gap, and when the damper shaft (4) is compressed, the second spring (2) contacts the spring stopper (3) and there is no gap.

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