CN203331771U - Series connection type spring and shock absorber arrangement structure - Google Patents

Abstract

The utility model relates to a series arrangement structure of springs and shock absorbers, which belongs to the technical field of related components of vehicle suspension systems. It includes a spring, a shock absorber, an upper pin shaft of the shock absorber, an upper support and a lower control arm. The upper connection end of the shock absorber is movably connected with the upper support through the upper pin shaft of the shock absorber. Outside the shock absorber, the upper end of the spring is fixedly connected to the upper support, and the lower connection end of the shock absorber and the lower end of the spring are movably connected with the lower control arm. The utility model can make the suspension spring have greater freedom of movement when moving with the vehicle suspension system, effectively reduce the additional bending stress of the suspension spring, and improve the working reliability and service life of the spring.

Description

A tandem spring and damper arrangement

technical field

The utility model relates to a motor vehicle component, in particular to a series arrangement structure of a spring and a shock absorber, and belongs to the technical field of components related to a vehicle suspension system.

Background technique

The arrangement structure of series springs and shock absorbers adopted in the existing motor vehicle suspension system is shown in Fig. The bottom end of the shock absorber is connected with the lower support of the shock absorber 6 through the lower pin shaft 5 of the shock absorber, and at the same time, the lower support of the shock absorber 6 is fixedly connected with the lower control arm 7 of the suspension, so that the upper and lower connection ends of the shock absorber 3 can be connected with the suspension The frame movement is correspondingly rotated; the coil spring 4 is sleeved outside the shock absorber 3, the upper end is fixed on the upper support 2, and the lower end is fixed on the lower control arm 7, and both ends can not rotate relative to the suspension movement. Due to the arrangement of springs and shock absorbers in series, this arrangement saves space, but it also brings the following problems:

1. Because the two ends of the spring are relatively fixed and lack the necessary degrees of freedom, it is easy to cause the spring to undergo significant bending deformation in addition to the normal compression deformation during the movement of the suspension. When the suspension stroke is large, it is easy to cause the spring and The movement of the shock absorbers interferes, thereby adversely affecting the function of the suspension system;

2. The bending deformation of the spring will lead to uneven stress distribution on the spring, and the inner stress of the spring segment where the bending deformation occurs will increase, which will easily lead to its early fracture and affect the reliability and service life of the spring.

Utility model content

The purpose of this utility model is to provide a series arrangement of springs and shock absorbers for the defects of the prior art.

The technical solution adopted by the utility model is: it includes a spring, a shock absorber, an upper pin shaft of the shock absorber, an upper support and a lower control arm, and the upper connection end of the shock absorber passes through the upper pin shaft of the shock absorber and the upper support. The seat is movably connected, the spring is sleeved outside the shock absorber, the upper end of the spring is fixedly connected to the upper support, and the lower connection end of the shock absorber and the lower end of the spring are movably connected with the lower control arm.

Further, the lower control arm is provided with a lifting ear, and the lower end of the spring is fixedly connected with a spring lower support matched with the lifting ear, and the spring lower support is movably connected with the lifting ear through a lower pin. The lower connection end of the shock absorber is movably connected with the lifting lug through the lower pin.

Further, the lower spring support is a ring structure fixed to the lower end of the spring.

Compared with the existing tandem spring and shock absorber arrangement structure, the utility model can make the suspension spring have a greater degree of freedom of movement when moving with the vehicle suspension system, even in the suspension with a large suspension stroke The arrangement of series springs and shock absorbers in the frame system can also avoid the occurrence of interference between the springs and shock absorbers during the movement of the entire system, and at the same time effectively reduce the additional bending stress of the suspension springs and improve the spring performance. Work reliability and service life.

Description of drawings

Fig. 1 is prior art schematic diagram;

Fig. 2 structural representation of the utility model;

Fig. 3 is an exploded view of the utility model.

In the figure, 1-shock absorber upper pin, 2-upper support, 3-shock absorber, 4-spring, 5-shock absorber lower pin, 6-shock absorber lower support, 7-lower control Arm, 8-shock absorber upper bracket, 9-spring lower support, 10-lower pin, 11-hanging lug.

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the utility model, but they do not limit the utility model.

As shown in Fig. 2 and Fig. 3, the utility model includes a spring 4, a shock absorber 3, an upper pin shaft 1 of the shock absorber, an upper support 2, an upper bracket 8 of the shock absorber and a lower control arm 7, and the upper shock absorber The bracket 8 is fixedly connected with the upper support 2, the upper connection end of the shock absorber 3 is flexibly connected with the upper support 2 through the upper pin shaft 1 of the shock absorber, the upper support 8 of the shock absorber, and the spring 4 is set outside the shock absorber 3, The upper end of the spring 4 is fixedly connected to the upper support 2, the lower control arm 7 is provided with a lifting lug 11, and the lower end of the spring 4 is fixedly connected with the lower spring support 9 matched with the lifting lug 11, and the lower spring support 9 passes through the lower pin The column 10 is movably connected with the lifting lug 11, the lower connection end of the shock absorber 3 is movably connected with the lifting lug 11 through the lower pin column 10, and the lower spring support 9 is a suspension ring structure fixed with the spring 4 lower end.

As shown in Figure 3, the lower end of the spring 4 is fixedly connected with the spring lower support 9, and can rotate around the axis I along with the spring lower support 9; The lifting lug 11 on the control arm 7 remains rotationally connected. Through the joint action of the lower spring support 9 and the lower pin 10, the spring 4 can rotate around the axis I and the lower control arm 7 while reciprocating with the compression and stretching of the suspension, so as to prevent the spring 4 from bending and deforming. While interfering with the shock absorber 3, the additional bending stress of the spring 4 is effectively reduced, and its reliability and service life are improved.

At the same time, by rationally arranging the position of the upper mounting point of the coil spring, the rotation amount of the upper end of the coil spring with the movement of the suspension can be controlled within the range of ±5o, so the upper end is still connected by a fixed spring. Compared with the layout structure in which both ends of the spring can be rotated, this structure reduces the layout size of the spring and shock absorber on the one hand, and improves the stability of the spring on the other hand. In addition, the spring will not be significantly damaged. Bending deformation.

The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (3)

1. a tandem spring and shock absorber arrangement structure, it comprises spring, shock absorber, shock absorber upper pin, upper bracket and Lower control arm, on described shock absorber, coupling end is flexibly connected by shock absorber upper pin and upper bracket, described spring is placed in outside shock absorber, described spring upper end is fixedly connected on upper bracket, it is characterized in that: under described shock absorber, coupling end and spring lower end and Lower control arm are flexibly connected.

2. a kind of tandem spring according to claim 1 and shock absorber arrangement structure, it is characterized in that: described Lower control arm is provided with hanger, described spring lower end is fixedly connected with the spring lower support matched with hanger, described spring lower support is flexibly connected by lower pin and hanger, and under described shock absorber, coupling end is flexibly connected by lower pin and hanger.

3. a kind of tandem spring according to claim 2 and shock absorber arrangement structure is characterized in that: described spring lower support for the fixing suspension ring structure in spring lower end.

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