CN217197760U

CN217197760U - Car suspension system and car

Info

Publication number: CN217197760U
Application number: CN202220245402.8U
Authority: CN
Inventors: 李玉洁; 黄颖; 田子龙; 任超
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2022-01-29
Filing date: 2022-01-29
Publication date: 2022-08-16
Anticipated expiration: 2032-01-29

Abstract

The application provides an automobile, which comprises an automobile suspension system, wherein the automobile suspension system comprises a power assembly, a left suspension component arranged on a left longitudinal beam and a right suspension component arranged on a right longitudinal beam, an elastic shaft of the suspension system formed by connecting elastic centers of the left suspension component and the right suspension component forms a first orthographic projection on a transverse plane, a torque shaft of the power assembly forms a second orthographic projection on the transverse plane, the included angle between the first orthographic projection and the second orthographic projection is 0-2 degrees, the first orthographic projection intersects with a central line in the length direction of the left longitudinal beam at a first intersection point, the first orthographic projection intersects with a central line in the length direction of the right longitudinal beam at a second intersection point, the second orthographic projection intersects with the central line in the length direction of the left longitudinal beam at a third intersection point, the second orthographic projection intersects with the central line in the length direction of the right longitudinal beam at a fourth intersection point, and the distance between the first intersection point and the third intersection point is 0-30 mm, the distance between the second intersection point and the fourth intersection point is 0-30 mm, and the NVH decoupling performance of the suspension system can be effectively improved within the numerical range.

Description

Car suspension system and car

Technical Field

The utility model belongs to the technical field of the automotive power assembly suspension system technique and specifically relates to an automotive suspension system and car are related to.

Background

The power assembly suspension decoupling performance is an important index of the suspension system NVH performance design, and is a key design index of working conditions such as idling of the whole vehicle, gear shifting impact, start-stop, threshold-crossing impact and the like, and the positions of the elastic shaft and the torque shaft of the suspension system are in important relation to the NVH performance of the suspension system, so that the positions of the elastic shaft and the torque shaft of the suspension system are reasonably designed, and the NVH performance of the suspension system can be effectively improved.

SUMMERY OF THE UTILITY MODEL

The utility model provides an automobile suspension system and car, it can realize good NVH suspension decoupling zero performance.

The utility model adopts the technical scheme as follows:

an automobile suspension system comprises a power assembly, a left suspension component arranged on a left longitudinal beam and a right suspension component arranged on a right longitudinal beam, wherein the left suspension component and the right suspension component are uniform suspension devices, a connection line of an elastic center of a suspension device of the left suspension component and an elastic center of a suspension device of the right suspension component forms a suspension system elastic shaft, the suspension system elastic shaft forms a first orthographic projection on a transverse plane, a torque shaft of the power assembly forms a second orthographic projection on the transverse plane, an included angle between the first orthographic projection and the second orthographic projection is 0-2 degrees, the first orthographic projection intersects with a length direction center line of the left longitudinal beam at a first intersection point, the first orthographic projection intersects with a length direction center line of the right longitudinal beam at a second intersection point, the second orthographic projection intersects with the length direction center line of the left longitudinal beam at a third intersection point, and the second orthographic projection intersects with the length direction center line of the right longitudinal beam at a fourth intersection point, the distance between the first intersection point and the third intersection point is 0-30 mm, and the distance between the second intersection point and the fourth intersection point is 0-30 mm.

In one embodiment, the first and third intersections are spaced apart from each other by a distance of 0-25 mm, and the second and fourth intersections are spaced apart from each other by a distance of 0-25 mm.

In one embodiment, the length center line of the left longitudinal beam comprises a first position and a second position, an orthographic projection formed by the elastic center of the suspension device of the left suspension assembly on the transverse plane is positioned between the first position and the second position, and the distance between the first position and the second position is 38 mm-42 mm; the length center line of the right longitudinal beam comprises a third position and a fourth position, the orthographic projection formed by the elastic center of the suspension device of the right suspension assembly on the transverse plane is positioned between the third position and the fourth position, and the distance between the third position and the fourth position is 38 mm-42 mm.

In one embodiment, a suspension apparatus includes:

the passive side bracket is used for connecting the automobile frame;

the driving side bracket is used for connecting the power assembly;

the inner cavity is arranged on the driven side bracket; and

the main spring elastic piece is arranged in the inner cavity; the main spring elastic piece comprises a limiting block and a connecting end, the connecting end comprises two symmetrically arranged connecting pins, the inner wall of the inner cavity is provided with two symmetrically arranged clamping grooves, and the tail ends of the two connecting pins are matched with the clamping grooves.

In one embodiment, two opposite sides of the limiting block in the first direction are respectively provided with a buffer block protruding along the radial direction of the limiting block.

In one embodiment, the two connecting legs extend obliquely from the main spring elastic member toward the inner wall of the cavity and gradually move away from each other in the first direction.

In one embodiment, two opposite side walls of the slot are respectively formed with a groove, and two opposite side walls of the connecting leg are respectively formed with a bump for matching with the groove.

In one embodiment, a buffer space is formed between the two connecting legs and the inner wall of the inner cavity.

In an embodiment, the distance between the center of mass of the powertrain and the first orthographic projection in the vehicle length direction is less than or equal to 15 mm.

An automobile comprises the automobile suspension system.

The utility model has the advantages that:

the suspension system elastic shaft forms a first orthographic projection on a transverse plane, a torque shaft of a power assembly forms a second orthographic projection on the transverse plane, the first orthographic projection and a length direction center line of a left longitudinal beam intersect at a first intersection point, the first orthographic projection and a length direction center line of a right longitudinal beam intersect at a second intersection point, the second orthographic projection and a length direction center line of the left longitudinal beam intersect at a third intersection point, and the second orthographic projection and a length direction center line of the right longitudinal beam intersect at a fourth intersection point; according to the method, the included angle between the first orthographic projection and the second orthographic projection is controlled to be 0-2 degrees, the distance between the first intersection point and the third intersection point is controlled to be 0-30 mm, the distance between the second intersection point and the fourth intersection point is controlled to be 0-30 mm, and the NVH decoupling performance of the suspension system can be effectively improved within the numerical range.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings, there is shown in the drawings,

fig. 1 is a schematic view of the overall structure of a suspension device according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structure diagram of a suspension device according to an embodiment of the present invention;

fig. 3 is a schematic position diagram of the first orthographic projection and the second orthographic projection according to the embodiment of the present invention.

Reference is made to the accompanying drawings in which: 10. a passive side bracket; 11. an inner cavity; 12. a buffer space; 13. mounting holes; 21. A limiting block; 211. a buffer block; 212. a collar; 213. an elastic center; 22. a connecting end; 221. a connecting pin; 30. a driving side bracket; 40. a length direction center line of the left longitudinal beam; 41. a first intersection point; 42. a third intersection point; 43. a first position; 44. a second position; 50. the length direction center line of the right longitudinal beam; 51. a second intersection point; 52. a fourth intersection point; 53. a third position; 54. a fourth position; 60. a first orthographic projection; 70. and a second orthographic projection.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

The present embodiments provide an automobile including an automobile suspension system, preferably a three-point pendulum and four-point torque axle primary load bearing suspension, of a transverse front drive total arrangement. The automobile suspension system comprises a left suspension assembly arranged on the left longitudinal beam and a right suspension assembly arranged on the right longitudinal beam, the length direction of the left longitudinal beam is parallel to that of the right longitudinal beam, and the left suspension assembly and the right suspension assembly both comprise a suspension device. Referring to fig. 1 and 2, fig. 1 shows an overall structure of the suspension device, and fig. 2 shows a cross-sectional structure of the suspension device. The line connecting the elastic center 213 of the suspension of the left suspension assembly and the elastic center 213 of the right suspension assembly is the suspension system elastic axis. Referring to fig. 3, the elastic axis of the suspension system forms a first orthographic projection 60 on a transverse plane, wherein the transverse plane is a plane passing through both the longitudinal center line of the left longitudinal beam and the longitudinal center line of the right longitudinal beam, and the plane may be a horizontal plane; the torque axis of the power assembly forms a second orthographic projection 70 on the transverse plane, the included angle between the first orthographic projection 60 and the second orthographic projection 70 is 0-2 degrees, the first orthographic projection 60 and the length direction central line 40 of the left longitudinal beam intersect at a first intersection point 41, the first orthographic projection 60 and the length direction central line 50 of the right longitudinal beam intersect at a second intersection point 51, the second orthographic projection 70 and the length direction central line 40 of the left longitudinal beam intersect at a third intersection point 42, the second orthographic projection 70 and the length direction central line 50 of the right longitudinal beam intersect at a fourth intersection point 52, the distance between the first intersection point 41 and the third intersection point 42 is 0-30 mm, preferably 0-25 mm, and the distance between the second intersection point 51 and the fourth intersection point 52 is 0-30 mm, preferably 0-25 mm. Within the numerical range, the NVH decoupling performance of the suspension system can be effectively improved. Wherein the torque axis of the powertrain is determinable for a powertrain. When the power assembly does free torsional vibration, the main inertia shaft is necessarily used as a torsional central shaft, and when a disturbing force or moment acts on the main inertia shaft of the engine, the engine translates or rotates along the main inertia shaft. In fact, for the powertrain, the torsional external force comes from the crankshaft of the engine, and the crankshaft and the main inertia shaft are generally not coincident but have a certain included angle, so that under the action of the external moment, the engine does not rotate along any main inertia shaft but rotates around a special shaft, and the shaft is the torque shaft. When the position of the torque axis is changed, the position of the elastic axis of the suspension system can be adjusted in the design stage, so that the relative positions of the elastic axis and the torque axis of the suspension system are in a relatively adaptive position.

The length center line 40 of the left longitudinal beam comprises a first position 43 and a second position 44, the orthographic projection formed by the elastic center 213 of the suspension device of the left suspension assembly on the transverse plane is positioned between the first position 43 and the second position 44, and the distance between the first position 43 and the second position 44 is 38 mm-42 mm, preferably 40 mm; the right longitudinal beam comprises a third location 53 and a fourth location 54 on the length centre line 50, the centre of elasticity 213 of the suspension of the right suspension assembly being located in an orthographic projection formed on the transverse plane between the third location 53 and the fourth location 54, the distance between the third location 53 and the fourth location 54 being 38 mm-42 mm, preferably 40 mm. When the positions of the elastic center 213 of the suspension of the left suspension assembly and the elastic center 213 of the suspension of the right suspension assembly are changed, the position of the elastic axis of the suspension system is also changed, so that the elastic axis of the suspension system can be adapted to the torque axis of various positions.

Please refer to fig. 1-2. The suspension device comprises a driven side bracket 10 used for connecting the automobile frame, an active side bracket 30 used for connecting the power assembly, an inner cavity 11 arranged on the driven side bracket 10 and a main spring elastic part arranged in the inner cavity 11. The driven side bracket 10 is provided with a mounting hole 13, the driven side bracket 10 is fixedly connected to the left longitudinal beam or the right longitudinal beam through a fastener, and specifically, the fastener penetrates through the mounting hole 13 and then is connected with the left longitudinal beam or the right longitudinal beam. The material of main spring elastic component can be the rubber material, main spring elastic component includes stopper 21 and link 22, link 22 includes the connection foot 221 that the bisymmetry set up, inner chamber 11 inner wall is equipped with the draw-in groove that the bisymmetry set up, the end and the draw-in groove cooperation of two connection feet 221, can improve the joint strength of main spring elastic component and inner chamber inner wall like this, can also set up flexible filler between the end of connection foot 221 and the draw-in groove, the filler plays the cushioning effect, under the external force is crowded, the filler shrink, it can produce the displacement to connect foot 221, thereby make the skew take place for the position of main spring elastic component, suspension's elasticity center 213 also can take place corresponding change. The mounting position of the passive side bracket 10 on the left longitudinal beam or the right longitudinal beam is fixed and unchangeable, in the design and manufacture stage, according to actual requirements, the position of the inner cavity 11 can be deviated towards the left side of the passive side bracket 10 or deviated towards the right side, correspondingly, the main spring elastic part can be deviated towards the right side or deviated towards the left side, and then the position of the elastic center 213 of the suspension device is changed, so that the elastic center is deviated towards the left and the right within the stroke range of 0-40 mm, and thus the adjustable range of the elastic shaft of the suspension system can be improved, so that the elastic shaft of the suspension system can be adapted to various torque shafts at different positions, and by adjusting the relative positions of the elastic shaft and the torque shaft of the suspension system, the good NVH decoupling performance of the suspension system is obtained.

Referring to fig. 1-2, in the present embodiment, the limiting block 21 is provided with a mounting groove, the driving side bracket 30 is inserted into the mounting groove, and preferably, the mounting groove is provided with a collar 212, and the driving side bracket 30 is inserted into the collar 212. The two opposite sides of the limiting block 21 in the first direction are respectively provided with a buffer block 211 protruding along the radial direction of the limiting block 21, so that a buffering effect can be achieved.

In this embodiment, the two connecting legs 221 extend obliquely from the main spring elastic member toward the inner wall of the internal cavity 11 and gradually move away from each other in the first direction, so that the main spring elastic member can obtain a good rigidity in the left-right direction. In order to further increase the connection strength between the connection pin 221 and the inner wall of the inner cavity 11, two opposite side walls of the slot are respectively provided with a groove, and two opposite side walls of the connection pin 221 are respectively provided with a bump for matching with the groove.

In this embodiment, a buffer space 12 is formed between the two connecting legs 221 and the inner wall of the inner cavity 11, so that the flexibility of the main spring elastic member can be improved, and a better buffer effect can be obtained.

In this embodiment, the distance between the center of mass of the powertrain and the elastic axis of the suspension system in the vehicle length direction is less than or equal to 15mm, thereby further defining the range in which the position of the elastic axis of the suspension system can be varied.

As long as the idea created by the present invention is not violated, various different embodiments of the present invention can be arbitrarily combined, and all the embodiments should be regarded as the content disclosed by the present invention; the utility model discloses an in the technical conception scope, carry out multiple simple variant and different embodiments to technical scheme and go on not violating the utility model discloses the arbitrary combination of the thought of creation all should be within the protection scope.

Claims

1. An automobile suspension system comprises a power assembly, a left suspension component arranged on a left longitudinal beam and a right suspension component arranged on a right longitudinal beam, wherein the left suspension component and the right suspension component are uniformly suspended in a suspension device, and a connection line of an elastic center of the suspension device of the left suspension component and an elastic center of the suspension device of the right suspension component forms an elastic shaft of the suspension system, and the automobile suspension system is characterized in that the elastic shaft of the suspension system forms a first orthographic projection on a transverse plane, a torque shaft of the power assembly forms a second orthographic projection on the transverse plane, an included angle between the first orthographic projection and the second orthographic projection is 0-2 degrees, the length direction center line of the first orthographic projection and the left longitudinal beam intersects at a first intersection point, the length direction center line of the first orthographic projection and the right longitudinal beam intersects at a second intersection point, and the length direction center line of the second orthographic projection and the left longitudinal beam intersects at a third intersection point, the second orthographic projection and the length direction center line of the right longitudinal beam intersect at a fourth intersection point, the distance between the first intersection point and the third intersection point is 0-30 mm, and the distance between the second intersection point and the fourth intersection point is 0-30 mm.

2. The vehicle suspension system of claim 1 wherein said first intersection point and said third intersection point are spaced apart from each other by a distance of 0-25 mm and said second intersection point and said fourth intersection point are spaced apart from each other by a distance of 0-25 mm.

3. The vehicle suspension system of claim 1 wherein the left side rail includes a first location and a second location along a centerline of the length of the left side rail, an orthographic projection of the center of elasticity of the suspension of the left suspension assembly onto the transverse plane being between the first location and the second location, the first location and the second location being spaced from each other by a distance of 38mm to 42 mm; the length center line of the right longitudinal beam comprises a third position and a fourth position, an orthographic projection formed by the elastic center of the suspension device of the right suspension assembly on the transverse plane is located between the third position and the fourth position, and the distance between the third position and the fourth position is 38 mm-42 mm.

4. The vehicle suspension system of claim 1, wherein the suspension arrangement comprises:

the passive side bracket is used for connecting the automobile frame;

the driving side bracket is used for connecting the power assembly;

the inner cavity is arranged in the driven side bracket; and

5. The vehicle suspension system according to claim 4, wherein said stopper is provided with a bumper protruding in a radial direction of said stopper on opposite sides in said first direction; the first direction is parallel to a length direction of the left side member.

6. The vehicle suspension system according to claim 4 wherein said connecting legs extend obliquely from said main spring elastic member toward said inner cavity wall and are gradually spaced apart from each other in a first direction; the first direction is parallel to a length direction of the left side member.

7. The suspension system of claim 4, wherein the slot is defined by a groove on each of two opposite sidewalls of the slot, and the connecting leg is defined by a protrusion on each of two opposite sidewalls of the connecting leg for engaging the groove.

8. The vehicle suspension system of claim 4 wherein a buffer space is defined between said connecting legs and said interior wall of said interior cavity.

9. The vehicle suspension system of claim 1 wherein a distance between a center of mass of the powertrain and the first orthographic projection in a vehicle length direction is less than or equal to 15 mm.

10. An automobile, characterized by comprising the automobile suspension system according to claims 1-9.