KR20110096265A

KR20110096265A - Rotational characterize decreasing typed bush unit

Info

Publication number: KR20110096265A
Application number: KR1020100015616A
Authority: KR
Inventors: 유기대
Original assignee: 현대모비스 주식회사
Priority date: 2010-02-22
Filing date: 2010-02-22
Publication date: 2011-08-30

Abstract

The bush unit of the present invention is composed of a bush (1) press-fitted to the arm side of the components constituting the suspension, and the rotary support (5) to rotate against the external force while surrounding the bush (1), bush (1) Rotation characteristics are implemented without using the deformation of the side rubber mass (4), as well as improving durability, and also lowers the resistance of the bush (1) in accordance with the up and down wheel movement to improve the ride comfort.

Description

Rotational characterize decreasing typed bush unit

TECHNICAL FIELD The present invention relates to a bush, and more particularly, to a rotational characteristic reduction bush unit that enables rotation.

In general, a bush having a rubber mass which is an elastic material is applied to a fastening point of a control arm and a rear cross member.

In this case, the bush is integrally moved by the outer pipe forming the outer appearance is pushed into the control arm, the inner inner pipe of the rubber mass is fixed to the rear cross member side.

As a result, when the bush is rotated, the bush moves in the rotational direction through deformation of the rubber mass.

In general, the ride comfort is improved as the resistance to the vertical movement of the wheel is smaller, so that the resistance according to the rotational characteristics of the bush does not act as a resistance to the vertical movement of the wheel.

However, the bush having a rotational characteristic depending on the deformation of the rubber mass has no choice but to minimize the deformation of the rubber mass in order to improve the ride comfort because the rotational movement resistance can lead to the vertical movement resistance of the wheel.

In addition, the bush having the rotational characteristics as described above also increases the stress in proportion to the increase in the amount of rubber deformation due to rotation, thereby inevitably increases the tendency to cause cracking of the rubber mass.

Accordingly, the present invention has been made in view of the above, and by implementing a rotational characteristic having a movement in the rotation direction without bringing the deformation of the rubber mass, by reducing the stress of the rubber mass to improve the durability, to free rotation direction movement The purpose of the present invention is to improve the rotational characteristics reduction bush which can improve the riding comfort by lowering the resistance to vertical movement of the wheel.

The present invention for achieving the above object, the bush unit is a rubber mass is vulcanized adhesively, the bush is pressed to the arm side of the component constituting the suspension receives a rotational force;

A rotational support surrounding the bush so as not to deform the rubber mass by implementing a rotational characteristic that follows the rotational direction applied to the bush;

Characterized in that configured to include.

The rotatable support surrounds an outer pipe forming an outer appearance of the bush that is pressed into the arm side of the constituting suspension.

The rotating support is composed of a housing fixed to the outer pipe of the bush, a bearing in contact with the outer circumferential surface of the outer pipe and the inner surface of the housing.

The bearing is made of a plastic material.

The housing forms a hollow cylindrical shape, and upper and lower sides of the housing form upper and lower flanges fixed to the outer pipe, respectively.

According to the present invention, it is possible to improve the durability by implementing the rotation characteristics without using the deformation of the rubber mass, and to improve the riding comfort by lowering the bushing resistance during the vertical movement of the wheel.

1 is an exploded view of a rotational characteristic reduced bush unit according to the present invention, Figure 2 is an assembled cross-sectional view of the rotational characteristic reduced bush unit according to the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Since the exemplary embodiments of the present invention may be embodied in various different forms, one of ordinary skill in the art to which the present invention pertains may be described herein. It is not limited to the Example to make.

Figure 1 shows an exploded view of the rotation characteristics reduced bush unit according to the present invention.

As shown, the bush unit is pushed into the arm side of the components constituting the suspension and the rubber mass 4 toward the bush 1 by being rotated against an external force while surrounding the bush 1. Rotational support (5) which improves ride comfort by lowering the resistance of the bush (1) according to the improvement of durability and the wheel movement in the up and down direction by the rotation characteristics implemented without using the deformation of the).

The bush (1) applied to the present embodiment is composed of an inner pipe (2) and the outer pipe (3), between the inner pipe (2) and the outer pipe (3) a rubber mass (4) is vulcanized structure As a result, a conventional bush structure is achieved.

In this embodiment, the rotary support 5 is a bearing (6) in contact with the outer circumferential surface of the outer pipe (3) of the bush (1), and the outer pipe (3) of the bush (1) surrounding the bearing (6) It consists of a housing (7) fixed to.

The bearing 6 is preferably made of a plastic material.

The housing 7 forms a hollow cylindrical shape, and forms upper and lower flanges 8 and lower flanges 9 formed on the upper and lower sides of the housing 7, respectively.

Figure 2 shows an assembled cross-sectional view of the rotation characteristic reduced bush unit according to this embodiment.

As shown, the housing 7 of the rotary support 5 constituting the bush unit is caught by the outer pipe 3 of the bush 1 by using the upper flange 8 and the lower flange 9, (1) and the rotary support 5 forms a state in which they are coupled to each other.

In the assembled state as described above, the plastic bearing 6 according to the present embodiment is positioned inside the housing 7 and maintains contact with the outer circumferential surface of the outer pipe 3 of the bush 1.

Accordingly, in the bush 1 according to the present embodiment, the inner pipe 2 in which the rubber mass 4 is vulcanized is fixed to the rear cross member side, and the outer pipe 3 side mediates the rotation support 5. It is pressed into the arm which forms a suspension.

The bush 1 that is rotated in such an assembled state realizes a rotational characteristic of moving in the direction of rotation from the side of the rotational support 5 before deformation of the rubber mass 4.

That is, by estimating the direction of rotation of the housing 7 via the plastic bearing 6 located between the bush 1 and the housing 7, the bush 1 acts as a resistance to the vertical movement of the wheel on the bush 1 side. It does not generate the rotating characteristic.

As the deformation of the rubber mass 4 side of the bush 1 is prevented as described above, the durability and ride comfort of the bush 1 are improved while the radial dustproof, which is the main role of the rubber mass 4, is maintained. .

In addition, in this embodiment, by greatly reducing the amount of deformation of the bush 1 with respect to the rubber mass 4 in which the amount of deformation and the stress are proportional to each other, it is possible to reduce the crack of the rubber mass 4.

1: bush 2: inner pipe
3: outer pipe 4: rubber mass
5: rotating support 6: bearing
7: housing 8,9: upper and lower flange

Claims

A bush in which the rubber mass is vulcanized and press-fitted to the arm side of the components forming the suspension to receive rotational force;
A rotational support surrounding the bush so as not to deform the rubber mass by implementing a rotational characteristic that follows the rotational direction applied to the bush;
Rotation characteristics reduced bush unit, characterized in that configured to include.

The bushing of claim 1, wherein the rotatable support surrounds an outer pipe forming an exterior of the bush press-fitted to the arm of the constituting suspension.

The bush unit according to claim 2, wherein the rotatable support comprises a housing fixed to the outer pipe of the bush, and a bearing in contact with the outer circumferential surface of the outer pipe and the inner surface of the housing.

4. The bush unit according to claim 3, wherein the bearing is made of a plastic material.

The bushing of claim 3, wherein the housing has a hollow cylindrical shape, and upper and lower sides of the housing form upper and lower flanges fixed to the outer pipe, respectively.