CN109703308B - Automobile and double-fork arm type rear suspension thereof - Google Patents

Abstract

The invention provides an automobile and a double wishbone rear suspension thereof. The double wishbone rear suspension includes a wheel bracket (1) and two shock absorbers installed on the wheel bracket (1). (2), and upper and lower fork arms (4) and lower fork arms (5) articulated with the wheel bracket (1), which has a through hole for the drive shaft (6) to pass through , the two shock absorbers (2) are symmetrically arranged on the front and rear sides of the wheel axis, and the upper fork arm (4) and the lower fork arm (5) are arranged on the upper and lower sides of the wheel axis, and are opposite to each other. The wheel bracket (1) rotates within the cross-section of the vehicle body. The double-wishbone rear suspension provided by the present invention can be applied to rear-wheel drive vehicles without hindering the arrangement of the drive shaft. Moreover, by improving the stress condition of the lower wishbone, the risk of breakage is reduced, making the car more comfortable to ride. Comfort is improved.

Description

A kind of automobile and its double wishbone rear suspension

Technical field

The invention relates to the field of automobile technology, and in particular to an automobile and a double wishbone rear suspension thereof.

Background technique

Double-wishbone suspension is currently one of the most beneficial suspension forms for improving the handling stability and smoothness of a car. In the existing double-wishbone suspension in the form of a wishbone, the shock absorber is usually installed on the A-shaped lower fork. On the middle beam of the arm, this causes the lower wishbone to bear the additional bending moment from the shock absorber, which is prone to fracture failure. Moreover, because the position of the shock absorber hinders the arrangement of the drive shaft, the double wishbone suspension of this structure The frame cannot be applied to the drive axle, which limits the flexibility of the car's drive system design. Therefore, how to improve the double wishbone suspension in the form of a wishbone so that it can be applied to the drive axle and improve the stress on the lower wishbone, It has become an urgent technical problem to be solved by those skilled in the art.

Contents of the invention

In view of this, the present invention provides a car and a double-wishbone rear suspension thereof. The double-wishbone rear suspension can be applied to rear-wheel drive cars without hindering the arrangement of the drive shaft. Moreover, by improving the lower The stress on the fork arm reduces the risk of breakage and improves the ride comfort of the car.

In order to achieve the above objects, the present invention provides the following technical solutions:

A car's double-wishbone rear suspension, including:

a wheel carrier having a through hole for a drive shaft to pass through;

Two shock absorbers installed on the wheel carrier, the two shock absorbers are symmetrically arranged on the front and rear sides of the wheel axis; and

An upper fork arm and a lower fork arm are hingedly connected to the wheel bracket. The upper fork arm and the lower fork arm are arranged on the upper and lower sides of the wheel axis and rotate relative to the wheel bracket within the cross section of the vehicle body.

Preferably, in the above-mentioned double wishbone rear suspension, the lower end of the shock absorber is hinged to the wheel bracket, and the upper end is hinged to the body or frame, and the shock absorber is on the body relative to the wheel bracket. Rotation in cross section.

Preferably, in the above-mentioned double wishbone rear suspension, the wheel carrier includes an annular intermediate body arranged vertically, and the upper and lower ends of the intermediate body are fixedly connected with the first branch for installing the fork arm. The first support is a horizontal cylinder.

Preferably, in the above-mentioned double wishbone rear suspension, two L-shaped ones are symmetrically arranged with the middle body at a position that is 90° away from the first support in the circumferential direction of the intermediate body. The bracket is fixedly connected to the body. The long side of the bracket extends longitudinally along the vehicle body, and the short side faces the inside of the vehicle body. The end of the short side of the bracket has a second support for installing the shock absorber. The second support The seat is a fork-shaped structure.

Preferably, in the above-mentioned double wishbone rear suspension, the shock absorber is covered with a coil spring.

Preferably, in the above-mentioned double wishbone rear suspension, the upper wishbone and/or the lower wishbone are A-shaped.

An automobile includes a double-wishbone rear suspension, and the double-wishbone rear suspension is the double-wishbone rear suspension disclosed in any one of the above.

According to the above technical solution, it can be seen that the double wishbone rear suspension for automobiles provided by the present invention is provided with two shock absorbers. These two shock absorbers are installed on the wheel bracket and are symmetrically arranged on the wheel. The front and rear sides of the axis, therefore, not only avoid the lower wishbone from bearing the additional bending moment from the shock absorber, but also avoid the installation position of the drive shaft. In addition, the two shock absorbers form a certain span in the longitudinal direction of the body. Comfort can be effectively improved. It can be seen that the double wishbone rear suspension provided by the present invention can be applied to rear-wheel drive vehicles without hindering the arrangement of the drive shaft. Moreover, after the stress condition of the lower wishbone is improved, the This reduces the risk of breakage and improves the ride comfort of the car.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without exerting creative efforts.

Figure 1 is a three-dimensional schematic diagram of a double-wishbone rear suspension of an automobile provided by an embodiment of the present invention;

Figure 2 is a perspective view of the double wishbone rear suspension provided by the embodiment of the present invention from another perspective;

Figure 3 is a three-dimensional schematic view of component 1 in Figure 1;

Figure 4 is a schematic diagram of the arrangement relationship between the double wishbone rear suspension and the drive shaft provided by the embodiment of the present invention.

Marked in the picture are:

1. Wheel bracket; 11. Intermediate body; 12. Bracket; 13. First support; 2. Shock absorber; 3. Coil spring; 4. Upper wishbone; 5. Lower wishbone; 6. Drive shaft.

Detailed ways

In order to facilitate understanding, the present invention will be further described below in conjunction with the accompanying drawings.

Referring to FIGS. 1 and 2 , FIG. 1 is a schematic perspective view of a double-wishbone rear suspension of an automobile provided by an embodiment of the present invention. FIG. 2 is a schematic perspective view of the double-wishbone rear suspension from another perspective. The double wishbone rear suspension provided by the embodiment of the present invention includes a wheel carrier 1, a shock absorber 2, an upper wishbone 4 and a lower wishbone 5, wherein the wheel carrier 1 has a drive shaft 6 (see Figure 4) Through the through hole, two shock absorbers 2 are installed on the wheel bracket 1 and are symmetrically arranged on the front and rear sides of the wheel axis. The upper fork arm 4 and the lower fork arm 5 are arranged on the upper and lower sides of the wheel axis. And it is hingedly connected with the wheel bracket 1. The upper fork arm 4 and the lower fork arm 5 rotate relative to the wheel bracket 1 within the cross section of the vehicle body.

Referring to Figure 4, the double wishbone rear suspension provided by the present invention is provided with two shock absorbers 2. These two shock absorbers 2 are installed on the wheel bracket 1 and are symmetrically arranged at the front and rear of the wheel axis. Both sides, therefore, not only avoid the lower wishbone 5 from bearing the additional bending moment from the shock absorber 2, but also avoid the installation position of the drive shaft 6. In addition, the two shock absorbers 2 form a certain span in the longitudinal direction of the vehicle body. , can effectively improve comfort. It can be seen that the double wishbone rear suspension provided by the present invention can be applied to rear-wheel drive vehicles without hindering the arrangement of the drive shaft. Moreover, after the stress condition of the lower wishbone is improved, The risk of breakage is reduced and the ride comfort of the car is improved.

In specific practical applications, the lower end of the shock absorber 2 is generally connected to the wheel bracket 1 by a hinged connection, and the upper end of the shock absorber 2 is generally connected to the vehicle body or frame by a hinged connection. As shown in Figures 1 and 2, in this embodiment , the shock absorber 2 rotates relative to the wheel bracket 1 within the cross-section of the vehicle body.

The shock absorber 2 is usually covered with a coil spring 3, and the upper fork arm 4 and the lower fork arm 5 can be either A-shaped or V-shaped.

The specific structure of the wheel bracket 1 in this embodiment is shown in Figure 3. The wheel bracket 1 includes an annular intermediate body 11 arranged vertically. The upper and lower ends of the intermediate body 11 are fixedly connected with a third fork arm. A support 13, the first support 13 is a horizontal cylinder, that is, the hinge hole of the first support 13 extends along the longitudinal direction of the vehicle body.

Two L-shaped brackets 12 fixedly connected to the intermediate body 11 are symmetrically arranged at a position 90° away from the first support 13 in the circumferential direction of the intermediate body 11. The long sides of the brackets 12 extend longitudinally along the vehicle body, and the short sides of the brackets 12 extend longitudinally along the vehicle body. With one side facing the inside of the vehicle body, the end of the short side of the bracket 12 has a second support for installing the shock absorber 2, and the second support is a fork-shaped structure.

The present invention also provides an automobile, which includes the double wishbone rear suspension disclosed in the above embodiment. Since the double wishbone rear suspension disclosed in the above embodiment has the above technical effects, a car with the double wishbone rear suspension also has the above technical effects, which will not be described again here.

The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be practiced in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. A double-wishbone rear suspension of an automobile, which is characterized in that it includes: Wheel bracket (1), said wheel bracket (1) has a through hole for a drive shaft (6) to pass through, said wheel bracket (1) includes an annular intermediate body (11) arranged vertically, The upper and lower ends of the intermediate body (11) are fixedly connected with a first support (13) for installing the fork arm. The first support (13) is a horizontal cylinder. In the intermediate body Two L-shaped brackets (12) fixedly connected to the intermediate body (11) are symmetrically arranged at a position 90° away from the first bracket (13) in the circumferential direction of (11), so The long side of the bracket (12) extends longitudinally along the vehicle body, and the short side faces the inside of the vehicle body. The end of the short side of the bracket (12) has a second support for installing a shock absorber, and the second support is a fork. shape structure; Two shock absorbers (2) installed on the wheel bracket (1), the two shock absorbers (2) are symmetrically arranged on the front and rear sides of the wheel axis, the two shock absorbers (2) 2) Both are arranged in the vertical direction; and An upper fork arm (4) and a lower fork arm (5) hingedly connected to the wheel bracket (1). The upper fork arm (4) and the lower fork arm (5) are arranged on the upper and lower sides of the wheel axis. , and rotates within the cross-section of the vehicle body relative to the wheel bracket (1). 2. The double wishbone rear suspension according to claim 1, characterized in that the lower end of the shock absorber (2) is articulated with the wheel bracket (1), and the upper end is articulated with the vehicle body or frame, The shock absorber (2) rotates within the cross section of the vehicle body relative to the wheel bracket (1). 3. The double wishbone rear suspension according to claim 1, characterized in that the shock absorber (2) is provided with a coil spring (3). 4. The double wishbone rear suspension according to any one of claims 1 to 3, characterized in that the upper wishbone (4) and/or the lower wishbone (5) are A-shaped. 5. An automobile, including a double wishbone rear suspension, characterized in that the double wishbone rear suspension is the double wishbone rear suspension according to any one of claims 1 to 4.