CN206606023U - A kind of McPherson independent front suspension - Google Patents

Abstract

The utility model provides a McPherson front independent suspension, comprising a shock absorber bracket assembly, a steering knuckle connected with the shock absorber bracket assembly through a connecting bracket and a lower swing arm connected with the connecting bracket; The bracket has a first shaft hole, a second shaft hole and a third shaft hole, the first shaft hole and the second shaft hole are oppositely arranged, and the first fastener passes through the first shaft hole and the second shaft hole to fix the steering knuckle At the connecting bracket, so that the line connecting the first shaft hole and the second shaft hole forms the kingpin axis, the second fastener passes through the third shaft hole to pivotably connect the lower swing arm with the connecting bracket. The two parts of the steering knuckle and the connecting bracket of the utility model are designed to be connected by shaft holes, which can improve the steering operation force, steering return performance and increase braking stability; the shaft between the connecting bracket and the lower swing arm of the suspension of the utility model The hole connection solves the problem of too much freedom of external movement after the traditional MacPherson suspension is changed to a solid kingpin MacPherson front independent suspension.

Description

A McPherson front independent suspension

technical field

The utility model relates to an automobile chassis suspension system, in particular to a McPherson front independent suspension.

Background technique

With the gradual intensification of urbanization, the road space inside the city has been severely limited, and the requirements for the passing performance and maneuverability of the vehicle are getting higher and higher.

As an important index to measure the passing performance and maneuverability of a car, the performance of the chassis of the car is very important. The car chassis generally uses MacPherson independent suspension, which can not only guarantee the cost of the whole vehicle, but also meet the requirements of the front cabin space, so as to meet the layout of the powertrain, and this kind of independent suspension increases the physical After the kingpin axis, many performance indicators can be quantified separately, and the chassis performance has been greatly improved.

The traditional MacPherson independent suspension has the characteristics of simple structure, compactness, and less space. sexual performance.

As a steering axle, the MacPherson front independent suspension needs to have a degree of freedom of rotation around the axis of the kingpin to realize steering movement in order to ensure the kinematic performance of the suspension; it also needs to have a degree of freedom of turning around the direction parallel to the longitudinal axis degrees to realize the up and down jumping movement, that is, the three components of the steering knuckle, connecting bracket and lower swing arm ensure two degrees of freedom. The traditional McPherson front independent suspension steering knuckle and connecting bracket are integrated into a whole, through the connection between the connecting bracket and the lower swing arm with a ball joint, and two degrees of freedom are realized with one connection point, which undoubtedly results in a suspension degree of freedom Too many questions.

Utility model content

In order to solve the problem that the McPherson front independent suspension has too much freedom of external movement after the traditional MacPherson suspension is changed to a solid kingpin MacPherson suspension, the utility model proposes a MacPherson front independent suspension In the suspension, the connection between the steering knuckle and the connecting bracket is designed as an axle-hole connection, and the connection between the connecting bracket and the lower swing arm is also designed as an axle-hole connection.

A further purpose of the utility model is to propose a MacPherson front independent suspension, said MacPherson front independent suspension, comprising:

Shock absorber bracket assembly;

a steering knuckle connected to said shock absorber bracket assembly through a connecting bracket; and

a lower swing arm connected to the connecting bracket;

The connecting bracket has a first shaft hole, a second shaft hole and a third shaft hole, the first shaft hole and the second shaft hole are oppositely arranged, and the first fastener passes through the first shaft hole and the second shaft hole The second shaft hole is used to fix the steering knuckle at the connecting bracket, so that the line connecting the first shaft hole and the second shaft hole forms the kingpin axis, and the second fastener passes through The third shaft hole is used to pivotally connect the lower swing arm with the connecting bracket.

Further, one end of the lower swing arm has a first block and a second block opposite to the first block, a space is defined between the first block and the second block;

There is a first through hole at the first block, and a second through hole opposite to the first through hole at the second block; the second fastener is set to be able to pass through the The first through hole, the third shaft hole and the second through hole are used to pivotally connect the lower swing arm with the connecting bracket.

Further, the connecting bracket has a third block, and the third shaft hole is arranged at the third block;

The third block is configured to be insertable at the space between the first block and the second block.

Further, one end of the lower swing arm has a first mounting hole;

The connecting bracket has a U-shaped connecting portion, and the U-shaped connecting portion has a second mounting hole and a third mounting hole opposite to the second mounting hole;

One end of the lower swing arm is configured to be inserted through the U-shaped connection portion, so that the second fastener can pass through the second mounting hole, the first mounting hole and the second mounting hole in sequence. the third mounting hole.

Further, the connecting bracket is provided with a lug, and the lug is located on one side of the connecting bracket.

Further, the lug includes a first lug and a second lug opposite to the first lug, the first lug and the second lug define a space;

The second lug is close to the side of the third block of the connecting bracket.

Further, the first shaft hole is disposed at the first lug, and the second shaft hole is disposed at the second lug.

Optionally, the first fastener and the second fastener are bolts, screws or screw pins.

The two components of the steering knuckle and the connecting bracket of the utility model are designed to be connected by shaft holes. Therefore, the kingpin axis can greatly increase the Y-axis span, and the kingpin inclination angle and kingpin inclination angle of the entire McPherson front independent suspension The ideal parameters can be obtained for the offset distance, so various performances of the chassis such as steering force, steering return performance and increased braking stability can be improved.

Further, the kingpin axis of the McPherson front independent suspension described in the utility model is shifted to the outside, which effectively reduces the distance from the wheel center, the ground contact point to the steering axis, thereby generating unfavorable forces and When the torque fluctuates, due to the reduction of the radius of rotation, the resulting vibration of the steering wheel can be greatly reduced.

Further, the connecting bracket of the MacPherson front independent suspension described in the utility model is connected with the shaft hole between the lower swing arm, so that the original connection bracket and the ball hinge connection of the lower swing arm are changed into a shaft hole connection structure, which consists of two The degree of freedom is reduced to one degree of freedom, so the utility model solves the problem of the freedom of the external movement of the McPherson front independent suspension after the traditional McPherson independent suspension is changed to the physical kingpin MacPherson independent suspension. Too many questions.

According to the following detailed description of specific embodiments of the utility model in conjunction with the accompanying drawings, those skilled in the art will be more aware of the above and other objectives, advantages and features of the utility model.

Description of drawings

Hereinafter, some specific embodiments of the present utility model will be described in detail in an exemplary rather than restrictive manner with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the attached picture:

Fig. 1 is the schematic structural diagram of existing McPherson independent suspension and steering knuckle assembly;

Fig. 2 is the structural diagram of independent suspension before McPherson according to an embodiment of the present invention;

Fig. 3 is an exploded view of the front independent suspension of McPherson according to an embodiment of the present invention;

Fig. 4 is an enlarged view of the U-shaped connection part of the connecting bracket and a part of the lower swing arm of the McPherson front independent suspension of the utility model in Fig. 2 .

detailed description

Fig. 1 is a schematic structure diagram of an existing McPherson independent suspension and steering knuckle assembly. As shown in Figure 1, the existing MacPherson independent suspension can generally include a MacPherson independent suspension 1 and a steering knuckle structure 2, wherein the upper end of the steering knuckle structure 2 is connected to the MacPherson independent suspension 1 The shock absorber 101 is fixedly connected, and the lower end of the steering knuckle structure 2 is connected with the lower swing arm 102 of the MacPherson independent suspension 1 through a ball pin 201 . During the running of the vehicle, the relative distance between the lower arm 102 of the MacPherson independent suspension 1 and the fixed point of the steering knuckle structure 2 and the fixed point of the shock absorber 101 and the steering knuckle structure 2 is constantly changing. , the distance between the fixed point of the lower swing arm 102 and the steering knuckle structure 2 and the fixed point of the shock absorber 101 and the steering knuckle structure 2 decreases. On the contrary, when the vehicle jumps down, the distance between the lower swing arm 102 and the steering knuckle structure 2 The fastening point and the distance between the fastening point of the shock absorber 101 to the steering knuckle structure 2 increases. Further, the change of the relative distance between the lower swing arm 102 of the MacPherson independent suspension 1 and the fixed point of the steering knuckle structure 2 and the fixed point of the shock absorber 101 and the steering knuckle structure 2 is not only the distance along the vertical direction The change of the vehicle is also accompanied by the change of the distance in the front and rear direction of the vehicle. These distance changes make the steering performance of the car unstable. At the same time, the instability of the steering system in turn affects the performance of the MacPherson independent suspension 1.

As an improvement, the utility model changes the ball pin 201 of the connecting member in FIG. 1 , and adopts a shaft-hole connection. Fig. 2 is a structural diagram of a McPherson front independent suspension according to an embodiment of the present invention. As shown in Figure 2, the utility model provides a MacPherson front independent suspension 3, the MacPherson front independent suspension 3 may generally include a shock absorber bracket assembly 4, and a shock absorber bracket assembly 4 through the steering knuckle 6 connected with the connecting bracket 5 and the lower swing arm 7 connected with the connecting bracket 5 .

Fig. 3 is an exploded view of a McPherson front independent suspension according to an embodiment of the present invention. As shown in Figure 3, one side of the connecting bracket 5 of a McPherson front independent suspension 3 proposed by the utility model is provided with two opposite lugs, including a first lug 8 and a second lug 9; The first lug 8 has a first shaft hole 10, the second lug 9 has a second shaft hole 11; the connecting bracket 5 also has a third shaft hole 12, because the first shaft hole 10 and the second shaft hole 11 It is arranged on the same side of the connecting bracket 5, so the first fastener can pass through the first shaft hole 10 and the second shaft hole 11 to fix the steering knuckle 6 at the connecting bracket 5, so that the first shaft hole 10 and the second shaft hole 11 The line connecting the second shaft holes 11 forms the kingpin axis, and the second fastening member passes through the third shaft hole 12 to pivotally connect the lower swing arm 7 to the connecting bracket 5 . One end of the lower swing arm 7 has a first block 13 and a second block 14 opposite to the first block 13, a space is defined between the first block 13 and the second block 14; There is a first through hole 15, and the second block 14 has a second through hole 16 opposite to the first through hole 15; the second fastener can pass through the first through hole 15, the third shaft hole 12 and the second through hole in sequence. The two through holes 16 pivotally connect the lower swing arm 7 to the connecting bracket 5 . There is also a third block 17 on the connecting bracket 5, and the third shaft hole 12 is arranged on the third block 17; the third block 17 can be inserted into the space between the first block 13 and the second block 14 place.

Fig. 4 is an enlarged view of the U-shaped connection part of the connecting bracket and a part of the lower swing arm of the McPherson front independent suspension of the utility model in Fig. 2 . As shown in Figure 4, one end of the lower swing arm 7 has a first mounting hole 18; the connecting bracket 5 has a U-shaped connection portion, and the U-shaped connection portion has a second mounting hole 19 and a third mounting hole opposite to the second mounting hole 19 20 ; one end of the lower swing arm 7 can be inserted through the U-shaped connection part, so that the second fastener can pass through the second installation hole 19 , the first installation hole 18 and the third installation hole 20 in sequence. In addition, the solution conceivable by those skilled in the art may also be that the lower swing arm 7 has a U-shaped connection portion. The two fasteners can pass through the above-mentioned multiple installation holes in sequence for connection.

Optionally, the first fastener and the second fastener are bolts, screws or screw pins.

Specifically, the steering knuckle 6 of the McPherson front independent suspension 3 of the present utility model is connected with the connecting bracket 5 shaft holes through the kingpin axis formed by the connecting line of the first shaft hole 10 and the second shaft hole 11; It is connected with the shaft hole of the lower swing arm 7 through the shaft hole; there is a degree of freedom of rotation around the kingpin axis between the steering knuckle 6 and the connecting bracket 5; due to the shaft hole connection mode between the connecting bracket 5 and the lower swing arm 7, it will become A degree of freedom of rotation around the parallel longitudinal axis; the steering knuckle 6 and the connecting bracket 5 are designed to be connected by shaft holes, the kingpin axis can greatly increase the Y-axis span, and the kingpin inclination, kingpin inclination of the entire suspension The ideal parameters can be obtained for the offset distance in the pin; the shaft-hole connection between the connecting bracket 5 and the lower swing arm 7 changes the original ball joint connection between the connecting bracket 5 and the lower swing arm 7 into a shaft-hole connection structure, with two degrees of freedom It is reduced to one degree of freedom; the effect of reducing the degree of freedom is that it can improve various performances of the chassis such as steering operation force, steering return performance and braking stability, effectively reducing the distance from the wheel center, the ground contact point to the steering axis, As a result, when unfavorable force and torque fluctuations occur at the tires, the resulting steering wheel vibration can be greatly reduced due to the reduced radius of rotation.

The steering knuckle 6 and the connecting bracket 5 of the utility model are designed to be connected by shaft holes. Therefore, the kingpin axis can greatly increase the Y-axis span, and the kingpin inclination angle and the kingpin inner offset distance of the entire suspension The ideal parameters can be obtained, so various performances of the chassis such as steering force, steering return performance and increased braking stability can be improved.

The kingpin axis of the suspension described in the utility model deviates to the outside, which effectively reduces the distance from the wheel center, the ground contact point to the steering axis, so that when unfavorable force and torque fluctuations occur at the tires, due to the rotation radius It can greatly reduce the occurrence of steering wheel vibration caused by it.

The shaft hole connection between the connecting bracket 5 and the lower swing arm 7 of the suspension described in the utility model changes the ball hinge connection between the original connecting bracket 5 and the lower swing arm 7 into a shaft hole connection structure, which is reduced from two degrees of freedom to One degree of freedom, so the utility model solves the problem of too much freedom of external movement of the front MacPherson independent suspension 3 after the traditional MacPherson suspension is changed to a solid kingpin MacPherson type suspension.

So far, those skilled in the art should recognize that although a number of exemplary embodiments of the present invention have been shown and described in detail herein, they can still be used according to the present invention without departing from the spirit and scope of the present invention. Many other variations or modifications that conform to the principles of the utility model are directly determined or derived from the disclosed content of the new model. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (8)

1. A MacPherson front independent suspension, comprising: Shock absorber bracket assembly; a steering knuckle connected to said shock absorber bracket assembly through a connecting bracket; and a lower swing arm connected to the connecting bracket; It is characterized in that the connecting bracket has a first shaft hole, a second shaft hole and a third shaft hole, the first shaft hole and the second shaft hole are oppositely arranged, and the first fastener passes through the first shaft hole One shaft hole and the second shaft hole are used to fix the steering knuckle at the connecting bracket, so that the line connecting the first shaft hole and the second shaft hole forms the kingpin axis, and the second tight A fastener passes through the third shaft hole to pivotally connect the lower swing arm with the connecting bracket. 2. The MacPherson front independent suspension according to claim 1, wherein one end of the lower swing arm has a first block and a second block opposite to the first block, the first A space is defined between the block and the second block; The first block has a first through hole, and the second block has a second through hole opposite to the first through hole; Wherein, the second fastener is configured to pass through the first through hole, the third shaft hole and the second through hole in turn, so as to pivotably connect the lower swing arm to the connecting bracket. ground connection. 3. The MacPherson front independent suspension according to claim 2, wherein the connecting bracket has a third block, and the third shaft hole is arranged at the third block; Wherein, the third block is configured to be insertable at the space between the first block and the second block. 4. MacPherson front independent suspension according to claim 1, wherein one end of the lower swing arm has a first mounting hole; The connecting bracket has a U-shaped connecting portion, and the U-shaped connecting portion has a second mounting hole and a third mounting hole opposite to the second mounting hole; Wherein, one end of the lower swing arm is configured to be able to pass through and be inserted at the U-shaped connection part, so that the second fastener can pass through the second installation hole and the first installation hole in turn. and the third mounting hole. 5. The MacPherson front independent suspension according to claim 1, wherein the connecting bracket is provided with a lug, and the lug is located on one side of the connecting bracket. 6. The MacPherson front independent suspension according to claim 5, wherein the lugs include a first lug and a second lug opposite to the first lug, the first lug defining a space with the second lug; Wherein, the second lug is close to the side of the third block of the connecting bracket. 7. The MacPherson front independent suspension according to claim 6, wherein the first axle hole is arranged at the first lug, and the second axle hole is arranged at the second lug . 8. The MacPherson front independent suspension according to claim 1, wherein the first fastener and the second fastener are bolts, screws or screw pins.