CN115447332A - A kind of automobile rear suspension structure and automobile - Google Patents

Abstract

The invention discloses an automobile rear suspension structure and an automobile. The automobile rear suspension structure comprises a front upper arm, a front lower arm, a rear upper arm, a rear lower arm, a front beam arm, a sub-frame and a steering knuckle; the front upper arm comprises a first The connecting shaft and the second connecting shaft, the first connecting shaft connects the steering knuckle, the second connecting shaft connects the subframe; the third connecting shaft in the front lower arm connects the steering knuckle, and the fourth connecting shaft connects the subframe; the rear upper arm The fifth connecting shaft in the rear arm is connected to the steering knuckle, the sixth connecting shaft is connected to the subframe; the seventh connecting shaft in the rear lower arm is connected to the steering knuckle, and the eighth connecting shaft is connected to the subframe; the ninth connecting shaft in the front toe arm is connected to The steering knuckle, the tenth connecting shaft connects the subframe. Set the coordinate range of the key control points on the front upper arm, rear upper arm, rear lower arm and front toe arm in the rear suspension of the car, and improve the overall layout of the rear suspension structure of the car, so that the rear crossbeam on the subframe reaches the rear The distance between the wheel centers can satisfy the rearward movement of the drive motor, thereby increasing the space for the second row of seats.

Description

A kind of automobile rear suspension structure and automobile

technical field

The invention belongs to the technical field of automobile suspension, and relates to an automobile rear suspension structure and an automobile.

Background technique

Automobile suspension is an important system that transmits vertical, longitudinal and lateral forces to the vehicle body. During the operation of the vehicle, the suspension system plays an important role in the handling stability and comfort of the vehicle. More and more models have The suspension form is a multi-link structure, a four-link structure is generally used for mid-size vehicles, and a five-link structure is generally used for medium and large vehicles. In the existing five-link rear suspension scheme, it is difficult to balance the avoidance of wheel jump and the anti-body pitching performance, and the position arrangement of the five-link will limit the X-direction position of the vehicle's drive motor, sacrificing the X-direction of the second row space.

Contents of the invention

The purpose of the present invention is to solve the problem that the layout of the five-link rear suspension in the prior art will limit the X-direction position of the vehicle's drive motor, thereby sacrificing the space for the second row of seats, and provide a rear suspension structure of an automobile and an automobile rear suspension structure. .

In order to achieve the above object, the present invention adopts the following technical solutions to achieve:

An automobile rear suspension structure, comprising a front upper arm, a front lower arm, a rear upper arm, a rear lower arm, a front beam arm, a subframe and a steering knuckle;

The front upper arm includes a first connecting shaft and a second connecting shaft. The first connecting shaft is connected to the steering knuckle, and the second connecting shaft is connected to the subframe. The center coordinates of the second connecting shaft are 2898~2888mm, -411~- 421mm, 77-87mm;

The front lower arm includes a third connecting shaft and a fourth connecting shaft, the third connecting shaft is connected to the steering knuckle, the fourth connecting shaft is connected to the subframe, and the center coordinates of the fourth connecting shaft are 2718-2728mm, -493- -503mm, -86～-96mm;

The rear upper arm includes a fifth connecting shaft and a sixth connecting shaft, the fifth connecting shaft is connected to the steering knuckle, the sixth connecting shaft is connected to the subframe, and the center coordinates of the sixth connecting shaft are 3287~3297mm, -390~- 400mm, 72-82mm;

The rear lower arm includes a seventh connecting shaft and an eighth connecting shaft, the seventh connecting shaft is connected to the steering knuckle, the eighth connecting shaft is connected to the subframe, and the center coordinates of the eighth connecting shaft are 3159 to 3169 mm, -263 to -273mm, -144～-154mm;

The toe arm includes a ninth connecting shaft and a tenth connecting shaft, the ninth connecting shaft is connected to the steering knuckle, and the tenth connecting shaft is connected to the subframe.

A further improvement of the present invention is:

The subframe is connected with the vehicle body through the eleventh connecting shaft and the twelfth connecting shaft.

The coordinates of the connection point between the twelfth connecting shaft and the vehicle body are 3330-3340 mm, -505-515 mm, and 61-71 mm.

One end of the spring is connected to the rear lower arm, and the other end of the spring is connected to the vehicle body.

The rear lower arm is connected with one end of the shock absorber, and the other end of the shock absorber is connected with the vehicle body.

The first connecting shaft, the third connecting shaft, the fifth connecting shaft, the seventh connecting shaft and the ninth connecting shaft are respectively hinged to the steering knuckle.

The second connecting shaft, the fourth connecting shaft, the sixth connecting shaft, the eighth connecting shaft and the tenth connecting shaft are respectively hinged to the sub-frame.

An automobile, comprising the automobile rear suspension structure described in any one of the preceding items.

Compared with the prior art, the present invention has the following beneficial effects:

The present invention improves the overall arrangement scheme of the rear suspension structure of the automobile by setting the coordinate ranges of the key control points of the front upper arm, rear upper arm, rear lower arm and front toe arm in the rear suspension of the automobile, so that the rear suspension on the sub-frame The distance between the crossbeam and the center of the rear wheel can satisfy the rearward movement of the drive motor, thereby increasing the seat space of the second row.

Furthermore, the automobile rear suspension structure in the present invention can change the coordinates in the X direction, so as to realize the change of the wheelbase of the whole vehicle.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 to Fig. 4 are the three-dimensional structure schematic diagram of automobile rear suspension system of the present invention;

Fig. 5 is the wheel avoidance coordinate schematic diagram of automobile rear suspension structure of the present invention;

Fig. 6 is a schematic diagram of the X-direction avoidance position of the automobile rear suspension structure of the present invention.

Among them: 1-front upper arm, 2-front lower arm, 3-rear upper arm, 4-rear lower arm, 5-front beam arm, 6-subframe, 7-steering knuckle, 8-spring, 9-shock absorber , 101-first connecting shaft, 102-second connecting shaft; 201-third connecting shaft; 202-fourth connecting shaft; 301-fifth connecting shaft; 302-sixth connecting shaft; 401-seventh connecting shaft; 402-the eighth connecting shaft; 501-the ninth connecting shaft; 502-the tenth connecting shaft; 601-the eleventh connecting shaft; 602-the twelfth connecting shaft; 603-the rear beam.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "horizontal", "inside" etc. is based on the orientation or positional relationship shown in the drawings , or the orientation or positional relationship that the product of the invention is usually placed in use is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed in a specific orientation and operation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In addition, when the term "horizontal" appears, it does not mean that the part is required to be absolutely horizontal, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the embodiments of the present invention, it should also be noted that, unless otherwise specified and limited, the terms "setting", "installation", "connection" and "connection" should be interpreted in a broad sense, for example, It can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

The present invention is described in further detail below in conjunction with accompanying drawing:

Referring to Fig. 1-Fig. 4, it is the three-dimensional schematic view of a kind of automobile rear suspension structure of the present invention, comprises front upper arm 1, front lower arm 2, rear upper arm 3, rear lower arm 4, front beam arm 5, auxiliary frame 6, Steering knuckle 7, spring 8 and shock absorber 9; Define the vehicle body length direction as the first direction X, the vehicle body width direction as the second direction Y, the vehicle body height direction as the third direction Z, three directions are perpendicular to each other, with the first, The second and third directions establish a Cartesian coordinate system. The first direction X takes the rear of the vehicle body as the positive direction, the second direction Y takes the direction of the co-pilot position as the positive direction, and the third direction Z takes the upward direction of the vehicle body as the positive direction. The origin of the coordinate system is at the midpoint of the line connecting the centers of the two front wheels.

The front upper arm 1 includes a first connecting shaft 101 and a second connecting shaft 102, the first connecting shaft 101 is connected with the steering knuckle 7, the second connecting shaft 102 is connected with the sub-frame 6, the second connecting shaft 102 is a key control point, and the second connecting shaft 102 is a key control point. The center coordinates of the two connecting shafts 102 are 2898-2888mm, -411--421mm, and 77-87mm. The front lower arm 2 includes a third connecting shaft 201 and a fourth connecting shaft 202, the third connecting shaft 201 is connected with the steering knuckle 7, the fourth connecting shaft 202 is connected with the sub-frame 6, and the fourth connecting shaft 202 is a key control point, The center coordinates of the fourth connecting axis 202 are 2718-2728 mm, -493--503 mm, and -86--96 mm. The rear upper arm 3 includes a fifth connecting shaft 301 and a sixth connecting shaft 302, the fifth connecting shaft 301 is connected to the steering knuckle 7, the sixth connecting shaft 302 is connected to the subframe 6, the sixth connecting shaft 302 is a key control point, and the sixth connecting shaft 302 is a key control point. The center coordinates of the six connecting axes 302 are 3287-3297mm, -390--400mm, and 72-82mm. The rear lower arm 4 includes a seventh connecting shaft 401 and an eighth connecting shaft 402, the seventh connecting shaft 401 is connected to the steering knuckle 7, the eighth connecting shaft 401 is connected to the sub-frame 6, the eighth connecting shaft 402 is a key control point, The center coordinates of the eighth connecting axis are 3159 to 3169mm, -263 to -273mm, and -144 to -154mm. The toe arm 5 includes a ninth connecting shaft 501 and a tenth connecting shaft 502 , the ninth connecting shaft 501 is connected to the steering knuckle 7 , and the tenth connecting shaft is connected to the subframe 6 . Wherein, the first connecting shaft 101, the third connecting shaft 201, the fifth connecting shaft 301, the seventh connecting shaft 401 and the ninth connecting shaft 501 are respectively hinged to the steering knuckle 7; the second connecting shaft 102, the fourth connecting shaft 202, The sixth connecting shaft 302 , the eighth connecting shaft 402 and the tenth connecting shaft 502 are respectively hinged to the sub-frame 6 . By setting the second connecting shaft 102 in the front upper arm 1, the fourth connecting shaft 202 in the front lower arm 2, the sixth connecting shaft 302 in the rear upper arm 3, and the eighth connecting shaft 402 in the rear lower arm 4 as the key Control point, by limiting the coordinate range of the key control point, the overall layout of the rear suspension structure of the car is improved, so that the distance between the rear beam on the sub-frame and the center of the rear wheel can meet the rearward movement of the drive motor, and then Increased second-row seat space.

The subframe 6 is connected to the vehicle body through the eleventh connection shaft 601 and the twelfth connection shaft 602, and the coordinates of the connection points between the twelfth connection shaft 602 and the vehicle body are 3330-3340 mm, -505-515 mm, and 61-71 mm. It can better take into account the avoidance performance of the wheel and the anti-pitching performance of the vehicle body. See Figure 5, which is a curve diagram of the avoidance performance of the wheel.

The automobile rear suspension structure among the present invention also comprises spring 8 and shock absorber 9, and spring 8 and shock absorber 9 are oppositely arranged, and one end of spring 8 and one end of shock absorber 9 are respectively connected with rear lower arm 4, and spring 8 The other end of the shock absorber and the other end of the shock absorber 9 are respectively connected with the vehicle body.

Referring to Fig. 6, it is a schematic diagram of the X-direction avoidance position of the rear suspension structure of the automobile in the present invention. The sub-frame 6 in the rear suspension structure of the automobile is designed as a frame structure, and the rear beam 603 and the twelfth connecting shaft 602 are in the X direction of the whole vehicle. The distance ② between the front side of the rear beam 603 and the center of the rear wheel in the X direction of the vehicle can reach 310mm, which facilitates the rearward movement of the drive motor, thereby increasing the seat space of the second row. The automobile rear suspension structure in the present invention allows the coordinate change in the X direction to realize the change of the wheelbase of the whole vehicle.

The embodiment of the present invention also provides an automobile, which includes the rear suspension structure of the automobile described in the above embodiments.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (8)

1. A rear suspension structure of an automobile is characterized by comprising a front upper arm (1), a front lower arm (2), a rear upper arm (3), a rear lower arm (4), a toe-in arm (5), an auxiliary frame (6) and a steering knuckle (7);

the front upper arm (1) comprises a first connecting shaft (101) and a second connecting shaft (102), the first connecting shaft (101) is connected with a steering knuckle (7), the second connecting shaft (102) is connected with an auxiliary frame (6), and the center coordinates of the second connecting shaft (102) are 2898-2888 mm, -411-421 mm and 77-87 mm;

the front lower arm (2) comprises a third connecting shaft (201) and a fourth connecting shaft (202), the third connecting shaft (201) is connected with a steering knuckle (7), the fourth connecting shaft (202) is connected with an auxiliary frame (6), and the center coordinate of the fourth connecting shaft (202) is 2718-2728 mm, -493-503 mm, -86-96 mm;

the rear upper arm (3) comprises a fifth connecting shaft (301) and a sixth connecting shaft (302), the fifth connecting shaft (301) is connected with a steering knuckle (7), the sixth connecting shaft (302) is connected with an auxiliary frame (6), and the center coordinates of the sixth connecting shaft (302) are 3287-3297 mm, -390-400 mm and 72-82 mm;

the rear lower arm (4) comprises a seventh connecting shaft (401) and an eighth connecting shaft (402), the seventh connecting shaft (401) is connected with a steering knuckle (7), the eighth connecting shaft (402) is connected with an auxiliary frame (6), and the center coordinates of the eighth connecting shaft (402) are 3159-3169 mm, -263-273 mm, -144-154 mm;

the toe-in arm (5) comprises a ninth connecting shaft (501) and a tenth connecting shaft (502), the ninth connecting shaft (501) is connected with the steering knuckle (7), and the tenth connecting shaft (502) is connected with the auxiliary frame (6).

2. A rear suspension structure for a vehicle according to claim 1, wherein said sub-frame (6) is connected to the vehicle body through an eleventh connecting shaft (601) and a twelfth connecting shaft (602).

3. The rear suspension structure of an automobile as claimed in claim 2, characterized in that the coordinates of the connection point of the twelfth connection shaft (602) and the automobile body are 3330-3340 mm, -505-515 mm, 61-71 mm.

4. The rear suspension structure of an automobile as claimed in claim 1, wherein the rear lower arm (4) is connected to one end of a spring (8), and the other end of the spring (8) is connected to the automobile body.

5. A rear suspension structure for an automobile according to claim 1, wherein said rear lower arm (4) is connected to one end of a shock absorber (9), and the other end of the shock absorber (9) is connected to the automobile body.

6. A rear suspension structure of an automobile according to claim 1, wherein the first connecting shaft (101), the third connecting shaft (201), the fifth connecting shaft (301), the seventh connecting shaft (401) and the ninth connecting shaft (501) are respectively hinged to a knuckle (7).

7. The rear suspension structure of an automobile according to claim 1, wherein the second connecting shaft (102), the fourth connecting shaft (202), the sixth connecting shaft (302), the eighth connecting shaft (402) and the tenth connecting shaft (502) are respectively hinged to a sub-frame (6).

8. An automobile characterized by comprising the automobile rear suspension structure of any one of claims 1 to 7.

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