Suspension system for vehicle

Patent metadata

Field	Value
Publication number	US-11628702-B2
Application number	US-202117533791-A
Country	US
Kind code	B2
Filing date	Nov 23, 2021
Priority date	Mar 11, 2021
Publication date	Apr 18, 2023
Grant date	Apr 18, 2023

Abstract

A suspension system for a vehicle includes a spring pad coupled to a spring and configured to support the spring connecting a suspension arm and a vehicle body member of the vehicle, where the spring pad includes: a seat part coupled to an end of the spring; a guide part configured to guide upward and downward movements of the seat part; and an elastic part configured to connect the seat part and the guide part and having a length that varies when the seat part moves. In particular, the spring is consistently supported by being coupled to the seat part of the spring pad even in a situation in which an additional rebound further occurs in a full-rebound situation and the spring deviates from a range in which the spring can be extended, thus preventing withdrawal of the spring connecting the suspension arm and the vehicle body member.

First claim

What is claimed is:

1. A suspension system for a vehicle, the suspension system comprising:
a spring pad coupled to a spring and configured to support the spring connecting a suspension arm and a vehicle body member of the vehicle,
wherein the spring pad comprises:
a seat part coupled to an end of the spring;
a guide part configured to guide upward and downward movements of the seat part; and
an elastic part configured to connect the seat part and the guide part and having a length that varies when the seat part moves, wherein the elastic part has an external shape formed in a bellows shape.

2. The suspension system of claim 1 , wherein a spring coupling groove is formed along an outer circumference of the seat part, and the spring is inserted and fixed into the spring coupling groove.

3. The suspension system of claim 1 , wherein the seat part is made of a rubber material to absorb impact and prevent noise.

4. The suspension system of claim 1 , wherein the seat part is made of a rubber material, and an inner steel member made of a steel material is coupled in the seat part to maintain a shape of the seat part.

5. The suspension system of claim 1 , wherein an outer circumferential surface of the guide part is provided as an inclined surface to prevent interference with the seat part when the seat part moves.

6. The suspension system of claim 1 , wherein the guide part is made of any one of engineered plastic or steel to maintain strength.

7. The suspension system of claim 1 , wherein the elastic part is compressed by an elastic force of the spring coupled to the seat part in an empty vehicle state or in the event of a bump, and
wherein in a normal full-rebound situation in which the spring does not deviate from a free height of the spring or when an additional rebound further occurs in the full-rebound situation, the elastic part is decompressed and elastically deformed so that the length thereof increases, such that the spring is prevented from being withdrawn from the spring pad.

8. The suspension system of claim 1 , wherein the elastic part is made of any one of a polyurethane material or a highly compressive polymer material.

9. The suspension system of claim 1 , wherein the guide part of the spring pad is fixed to the vehicle body member positioned above the suspension arm, and an upper end of the spring is coupled to the seat part of the spring pad.

10. The suspension system of claim 1 , wherein the guide part of the spring pad is fixed to the suspension arm, and a lower end of the spring is coupled to the seat part of the spring pad.

11. The suspension system of claim 1 , wherein the spring pad further comprises a pair of spring pads and wherein the guide parts of the pair of spring pads are fixed to the suspension arm and the vehicle body member positioned above the suspension arm, respectively, an upper end of the spring is coupled to the seat part of the spring pad fixed to the vehicle body member, and a lower end of the spring is coupled to the seat part of the spring pad fixed to the suspension arm.

Assignees

• Hyundai Motor Co Ltd
• Kia Corp

Inventors

• Cho Jae Hyun
• Lee Sang Min
• Yoo Sang Hoon
• Lee Hae Seong

Classifications

• B60G11/52

  having helical, spiral or coil springs, and also rubber springs · CPC title

• B60G2202/12

  Wound spring · CPC title

• B60G2206/73

  Rubber; Elastomers · CPC title

• B60G2206/42

  Springs · CPC title

• B60Y2306/09

  Reducing noise · CPC title