CN212499773U - Automobile rear suspension system and automobile having the same - Google Patents
Automobile rear suspension system and automobile having the same Download PDFInfo
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- CN212499773U CN212499773U CN202020527164.0U CN202020527164U CN212499773U CN 212499773 U CN212499773 U CN 212499773U CN 202020527164 U CN202020527164 U CN 202020527164U CN 212499773 U CN212499773 U CN 212499773U
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- 239000000725 suspension Substances 0.000 title claims abstract description 50
- 239000006096 absorbing agent Substances 0.000 claims abstract description 50
- 230000035939 shock Effects 0.000 claims abstract description 50
- 239000003381 stabilizer Substances 0.000 claims description 62
- 230000008878 coupling Effects 0.000 description 8
- 238000010168 coupling process Methods 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009510 drug design Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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Abstract
本实用新型提供了一种汽车后悬架系统及具有其的汽车，包括副车架、轴节、下摆臂、前束臂、纵臂和减振器弹簧总成，所述减振器弹簧总成包括减振器和弹簧，所述副车架和所述轴节通过所述下摆臂和所述前束臂连接，所述纵臂的一端和所述轴节连接，另一端和汽车车身连接，所述减振器弹簧总成的一端和所述轴节连接，另一端和所述汽车车身连接。本实用新型提供的汽车后悬架系统，不仅能通过以较低的悬架成本实现整车操纵稳定性和平顺性能,改善NVH(噪声、振动与声振粗糙度)性能，同时应用到电动车上还可以改善采用扭梁和四连杆存在的电池X向空间较小问题，可布置大电池，实现电动车的高续航。
The utility model provides an automobile rear suspension system and an automobile having the same, comprising a subframe, a shaft section, a lower swing arm, a toe-in arm, a trailing arm and a shock absorber spring assembly, the shock absorber spring assembly is It includes a shock absorber and a spring, the subframe and the axle section are connected through the lower swing arm and the toe-in arm, one end of the trailing arm is connected with the axle section, and the other end is connected with the vehicle body , one end of the shock absorber spring assembly is connected with the shaft joint, and the other end is connected with the vehicle body. The automobile rear suspension system provided by the utility model can not only realize the steering stability and smooth performance of the whole vehicle with a lower suspension cost, and improve the NVH (noise, vibration and harshness) performance, but also can be applied to electric vehicles. It can also improve the problem of small space in the X-direction of the battery with the use of torsion beams and four-bar linkages, and can arrange large batteries to achieve high battery life of electric vehicles.
Description
Technical Field
The utility model relates to the field of automotive technology, concretely relates to suspension system and have its car behind car.
Background
The design of a suspension system is an important component of chassis design, particularly, a rear suspension has an extremely important effect on the stability and comfort of the whole vehicle, and the rear suspension system not only influences the operation stability and the smoothness of the whole vehicle, but also influences the design of vehicle body arrangement and man-machine arrangement. Common rear suspension systems mainly include non-independent suspensions such as an integral bridge and the like, torsion beam semi-independent suspensions, three-link, four-link, five-link and the like. The three-link suspension system is an independent suspension, the balance of stability and comfort is higher than that of a torsion beam, the X-direction space is better than that of a four-link, space is provided for the arrangement of batteries of automobiles, particularly electric vehicles, and the weight and the cost are smaller than those of the four-link and the five-link.
The existing three-link suspension system is difficult to realize the balance of the operating stability and the smooth performance of the whole vehicle on one hand, and on the other hand, the included angle between a longitudinal arm and the horizontal plane of the whole vehicle is small, so that the X-direction distance between the longitudinal arm and the wheel center is large, the X-direction spatial arrangement is not facilitated, and the three-link suspension system is particularly applied to electric vehicles. The technical problems of improving space and the operation stability and the smoothness performance of the whole vehicle are generally solved by adjusting the arrangement relation of a shock absorber and a rear lower swing arm in a rear suspension system in the conventional three-link suspension system in the market, but the adjustment mode has limitation, and the problems of small whole vehicle performance and small X-direction space of the rear suspension system cannot be comprehensively solved.
SUMMERY OF THE UTILITY MODEL
For solving the problem that the whole car performance of current rear suspension system is difficult to timing and X to the space undersize, the utility model provides a rear suspension system of car and have its car.
An automobile rear suspension system is characterized by comprising an auxiliary frame, a shaft joint, a lower swing arm, a toe-in arm, a longitudinal arm and a shock absorber spring assembly, wherein the shock absorber spring assembly comprises a shock absorber and a spring; the stabilizer bar is connected with the auxiliary frame, two ends of the stabilizer bar are respectively connected with the stabilizer bar pull rod, one end of the stabilizer bar pull rod is connected with the stabilizer bar, and the other end of the stabilizer bar pull rod is connected with the shock absorber.
Further, the connection point of the stabilizer bar pull rod and the shock absorber is arranged close to the axis of the shock absorber in the x-axis direction of the automobile, and the connection point of the stabilizer bar pull rod and the stabilizer bar is arranged far away from the axis of the shock absorber in the x-axis direction of the automobile.
Further, the included angle between the stabilizer bar pull rod and the yz plane of the automobile is larger than 3 degrees.
Furthermore, the lower swing arm is parallel and level to the wheel center of the automobile in the x-axis direction of the automobile, and the toe-in arm is far away from the wheel center of the automobile in the x-axis direction of the automobile.
Further, the included angle between the longitudinal arm and the xy plane of the automobile is larger than 12 degrees.
Further, the included angle between the force-bearing axis of the spring and the axis of the shock absorber on the xz plane of the automobile is larger than 13 degrees.
Further, the subframe is connected to the vehicle body via four bushings.
Based on the same conception, the utility model also provides an automobile, a serial communication port, including as above the automobile rear suspension system.
The utility model provides a suspension system behind car, including sub vehicle frame, coupling, swing arm, toe-in arm, longitudinal wall, shock absorber spring assembly, stabilizer bar and stabilizer bar pull rod down, shock absorber spring assembly includes shock absorber and spring. The auxiliary frame and the shaft joint are connected with the toe-in arm through the lower swing arm, two ends of the longitudinal arm are connected with the shaft joint and the vehicle body respectively, two ends of the shock absorber spring assembly are connected with the shaft joint and the vehicle body respectively, optionally, the stabilizer bars are assembled to the auxiliary frame through bushings, two ends of the stabilizer bars are connected with the left stabilizer bar pull rod and the right stabilizer bar pull rod, two ends of the stabilizer bar pull rods are connected with the stabilizer bars and the shock absorbers respectively, and finally, the auxiliary frame is connected to the vehicle body through four bushings to complete installation of the rear suspension system.
Specifically, the position relation of a lower swing arm and a toe-in arm is reasonably designed, the reasonable design of lateral force toe-in of a suspension and lateral displacement of a wheel center is realized, and better performance of a rear axle of the whole vehicle is achieved; the angle design between the longitudinal arm and the horizontal plane of the whole vehicle is optimized, the better braking nodding performance of the whole vehicle is realized, and the axle base change is increased, so that the better impact property of the whole vehicle when passing the bank is realized; the design of the included angle between the spring and the axis of the shock absorber is optimized, the stress of the shock absorber is optimized, and the performance of the shock absorber under severe working conditions is improved; the arrangement design of the stabilizer bars and the stabilizer bar pull rods is optimized, large reverse wheel jumping toe-in of the suspension is achieved, and better overall understeer performance is achieved. The structural design of the rear suspension system is guided by performance and arrangement, and through reasonable design of a hard point scheme, all connecting rods are stressed reasonably, labor division is clear, and the stress coupling problem of all rod systems is improved. Good linear running stability in the longitudinal direction is guaranteed, and the deformability of the wheel center under longitudinal impact is met; better lateral support is guaranteed to be provided laterally, the following performance of a rear shaft during steering is realized, and the better stress level of a point bushing on the shock absorber is met; by adding the bushing on the auxiliary frame, the four-point connection is realized on the vehicle body, and the good smoothness and NVH (noise, vibration and harshness) performance of the whole vehicle are realized.
Drawings
Fig. 1 is a schematic structural view of an automotive rear suspension system of the present invention;
description of reference numerals: 1. a damper spring assembly; 2. a trailing arm; 3. a lower swing arm; 4. a stabilizer bar; 5. a toe-in arm; 6. an auxiliary frame; 7. a shaft coupling; 8. a pull rod of the stabilizer bar.
Detailed Description
In order to make the objects, 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 with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, according to the embodiment of the present invention, the rear suspension system of the vehicle includes a sub-frame 6, a journal 7, a lower swing arm 3, a toe-in arm 5, a trailing arm 2, and a damper spring assembly 1, and the damper spring assembly 1 includes a damper and a spring. Wherein, sub vehicle frame 6 and spindle joint 7 are connected with toe-in arm 5 through swing arm 3 down, and the one end and the spindle joint 7 of trailing arm 2 are connected, and the other end and automobile body are connected, and the one end and the spindle joint 7 of shock absorber spring assembly 1 are connected, and the other end and automobile body are connected.
Specifically, one end of the shock absorber is connected to the boss 7 by a bolt, and the other end is connected to the vehicle body by a bolt; the spring is arranged at the upper end and the lower end of the shock absorber and is integrated together; the outer ends of the lower swing arm 3 and the toe-in arm 5 are connected with a shaft joint 7 through a bushing, the inner ends of the lower swing arm and the toe-in arm are connected with an auxiliary frame 6 through a bushing, the front end of the longitudinal arm 3 is connected with a vehicle body through a bushing, and the rear end of the longitudinal arm is connected with the shaft joint 7 through a bushing. The lower end of a stabilizer bar pull rod 8 is connected with a stabilizer bar 4 through a ball pin, the upper end of the stabilizer bar pull rod is connected with a shock absorber through the ball pin, the stabilizer bar 4 is connected with an auxiliary frame 6 through a lining, and the two ends of the stabilizer bar pull rod are connected with a left stabilizer bar pull rod 8 and a right stabilizer bar pull rod 8 through ball hinges; finally, the sub-frame 6 is attached to the vehicle body through four bushings, completing the assembly of the rear suspension system of the vehicle.
This suspension assembly is through above-mentioned relation of connection, and swing arm 3 and toe boom 5 position relation under the rational design simultaneously optimize the angle design of trailing arm 2 and whole car horizontal plane, optimize the axis contained angle design of spring and shock absorber to this structure supports the rear axle automobile body, bears the vertical, side direction and the longitudinal force effect that comes from the road surface, attenuates the vibration on road surface, coordinates the rear axle performance according to arranging and bush performance simultaneously, realizes the operating stability and the smooth-going performance of whole car.
Optionally, the automobile rear suspension system further comprises a stabilizer bar 4 and a stabilizer bar pull rod 8, the stabilizer bar 4 is assembled with the auxiliary frame 6 through a bushing, two ends of the stabilizer bar pull rod are connected with the left and right stabilizer bar pull rods 8, one end of the stabilizer bar pull rod 8 is connected with the stabilizer bar 4, and the other end of the stabilizer bar pull rod 8 is connected with the shock absorber. Through optimizing the arrangement design of the stabilizer bars 4 and the stabilizer bar pull rods 8, the large reverse wheel jumping toe-in of the suspension is realized, and the better understeer performance of the whole vehicle is achieved.
Optionally, the design of the rear suspension system of the automobile coordinates the stabilizer bar 4 and the stabilizer bar pull rod 8, and the connection point of the stabilizer bar pull rod 8 and the shock absorber is arranged close to the axis of the shock absorber in the x-axis direction of the automobile, so that the included angle between the stabilizer bar pull rod 8 and the yz plane of the automobile is 3 degrees, the change of the backward wheel jump toe-in is increased while the space is met, and the rear axle performance of the whole automobile is improved.
Optionally, the position relationship between the lower swing arm 3 and the toe-in arm 5 is reasonably designed, the lower swing arm 3 is arranged to be flush with the wheel center of the automobile in the x-axis direction of the automobile, the toe-in arm 5 is arranged to be far away from the wheel center of the automobile in the x-axis direction of the automobile, and the hard points of the inner point and the outer point of the toe-in arm 5 and the lower swing arm 3 are adjusted. The lateral force close to the wheel center acts on the tire, at the moment, the lateral force is mainly born by the lower swing arm 3, the stress of the toe-in arm 5 can be reduced, and a thinner rod piece can be adopted to realize weight reduction; meanwhile, the rigidity coupling of the bushings of the toe-in arm 5 and the lower swing arm 3 is optimized and coordinated, the reasonable design of the lateral force toe-in and the wheel center lateral displacement of the suspension is realized, and the better performance of the rear axle of the whole vehicle is achieved.
Optionally, the angle design of the trailing arm 2 and the horizontal plane of the whole automobile is optimized, the front and rear points of the trailing arm 2 are optimized, and the included angle between the trailing arm 2 and the xy plane of the automobile is set to be larger than 12 degrees. The better braking nodding angle is achieved while the space requirement of the battery is met, the better braking nodding performance of the whole vehicle is realized, the wheel base change can be increased, and the better impact property of the whole vehicle passing through the bank is realized.
Optionally, the design of the included angle between the axis of the spring and the axis of the shock absorber is optimized, the S-shaped spring is adopted, and the included angle between the stress axis of the spring and the axis of the shock absorber on the xz plane of the automobile is set to be 13 degrees according to the stress analysis result, so that the lateral force of the shock absorber can be weakened through the spring force, the stress of an upper point bushing of the shock absorber is reduced to a reasonable level, the stress of the shock absorber is optimized, the performance of the shock absorber under severe working conditions is improved, and meanwhile, the arrangement of.
Based on same design, the utility model also provides an automobile, this automobile includes as above the rear suspension system of automobile.
Therefore, the utility model provides a suspension system behind car, including sub vehicle frame 6, coupling 7, lower swing arm 3, toe-in arm 5, trailing arm 2, shock absorber spring assembly 1, stabilizer bar 4 and stabilizer bar pull rod 8, shock absorber spring assembly 1 includes shock absorber and spring. Wherein, sub vehicle frame 6 and coupling 7 are connected through swing arm 3 and toe-in arm 5 down, the both ends of trailing arm 2 respectively with coupling 7, body connection, the both ends of shock absorber spring assembly 1 respectively with coupling 7, body connection, optionally, stabilizer bar 4 assembles through bush and sub vehicle frame 6, both ends respectively with control stabilizer bar pull rod 8 and be connected, stabilizer bar pull rod 8's both ends respectively with stabilizer bar 4, shock absorber connection, finally, sub vehicle frame 6 is connected to the automobile body through four bushes, accomplish the installation of back suspension system.
This suspension assembly passes through above-mentioned relation of connection, swing arm 3 and 5 positional relations of toe-in arm under rational design simultaneously, optimize the angle design of trailing arm 2 and whole car horizontal plane, optimize the axis contained angle design of spring and shock absorber, optimize stabilizer bar 4 and stabilizer bar pull rod 8 and arrange the design, support the rear axle automobile body with this structure, bear the vertical that comes from the road surface, the side direction and the longitudinal force effect, the vibration on decay road surface, simultaneously according to arranging and bush performance coordination rear axle performance, realize the operation of whole car steady, ride comfort and NVH (noise, vibration and sound vibration roughness) performance. The suspension system can be applied to a car or an SUV with balanced requirements on the performance and the cost of the whole car, can realize the operation stability and the smoothness of the whole car by using lower suspension cost, can also improve the X-direction space smaller problem existing in torsion beams and four-bar linkages when applied to an electric car, can arrange a large battery, and realizes high endurance of the electric car.
Of course, the above is a preferred embodiment of the present invention. It should be noted that, for a person skilled in the art, several modifications and decorations can be made without departing from the basic principle of the present invention, and these modifications and decorations are also considered to be within the scope of the present invention.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020527164.0U CN212499773U (en) | 2020-04-10 | 2020-04-10 | Automobile rear suspension system and automobile having the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020527164.0U CN212499773U (en) | 2020-04-10 | 2020-04-10 | Automobile rear suspension system and automobile having the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212499773U true CN212499773U (en) | 2021-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020527164.0U Active CN212499773U (en) | 2020-04-10 | 2020-04-10 | Automobile rear suspension system and automobile having the same |
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| Country | Link |
|---|---|
| CN (1) | CN212499773U (en) |
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2020
- 2020-04-10 CN CN202020527164.0U patent/CN212499773U/en active Active
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