阅读说明：本技术 一种扭力梁悬架 (Torsion beam suspension ) 是由 李小俊 霍才仁 古宇 朱甲旺 吴光淮 张龙 姜永胜 赵康波 吴焱杰 于 2020-05-18 设计创作，主要内容包括：本发明公开一种扭力梁悬架,包括扭力梁组件以及两个安装座；所述扭力梁组件包括沿左右向沿伸设置的扭力横梁以及设于所述扭力横梁两端的两个安装部,所述扭力横梁具有在水平面内的投影区域；两个所述安装座分别安装至两个所述安装部的上端面上,所述安装座用以安装轮毂,每一所述安装座具有用于对应所述轮毂的安装中心,两个所述安装中心之间形成一安装中心线,所述安装中心线在水平面内的投影线对应所述扭力横梁的部分位于所述投影区域内。本发明中,两个所述安装座用以分别安装轮毂,将所述安装座设于所述安装部的上端面上,并使得所述安装中心线在水平面内的投影线位于所述投影区域内,使得侧倾中心保持在安装中心线上,提高侧倾中心的位置。(The invention discloses a torsion beam suspension, which comprises a torsion beam assembly and two mounting seats; the torsion beam assembly comprises a torsion beam extending along the left-right direction and two mounting parts arranged at two ends of the torsion beam, and the torsion beam is provided with a projection area in a horizontal plane; the two installation bases are respectively installed on the upper end faces of the two installation portions, the installation bases are used for installing hubs, each installation base is provided with an installation center corresponding to the hub, an installation center line is formed between the installation centers, and the part, corresponding to the torsion beam, of the projection line of the installation center line in the horizontal plane is located in the projection area. In the invention, the two mounting seats are used for respectively mounting the wheel hubs, the mounting seats are arranged on the upper end surface of the mounting part, and the projection line of the mounting center line in the horizontal plane is positioned in the projection area, so that the roll center is kept on the mounting center line, and the position of the roll center is improved.)

1. A torsion beam suspension, comprising:

the torsion beam assembly comprises a torsion beam extending along the left-right direction and two mounting parts arranged at two ends of the torsion beam, and the torsion beam is provided with a projection area in a horizontal plane; and the number of the first and second groups,

the two installation bases are installed on the upper end face of the installation portion respectively, the installation bases are used for installing hubs, each installation base is provided with an installation center corresponding to the hub, an installation center line is formed between the installation centers, and the part, corresponding to the torsion beam, of the projection line of the installation center line in the horizontal plane is located in the projection area.

2. The torsion beam suspension according to claim 1, wherein the torsion beam assembly further includes a plurality of welded plates extending in the left-right direction, and the plurality of welded plates are joined to each other to form the torsion beam.

3. The torsion beam suspension according to claim 2, wherein at least one of the weld plates has a lightening hole formed therethrough.

4. The torsion beam suspension according to claim 2, wherein a plurality of the weld plates are joined end to end in the axial direction of the torsion beam to form a mounting space extending in the left-right direction in the torsion beam;

the torsion beam assembly further comprises a reinforcing pipe which extends leftwards and rightwards, and the reinforcing pipe is arranged in the installation space.

5. The torsion beam suspension according to claim 1, wherein the torsion beam suspension further includes a tie rod extending in the left-right direction, and one end of the tie rod is rotatably mounted to a rear side surface of one of the mounting portions along a front-rear direction axis, and the other end is adapted to be mounted to a vehicle body.

6. The torsion beam suspension according to claim 1, wherein the torsion beam suspension further comprises a shock absorbing device, the shock absorbing device comprising two damper assemblies, lower mounting ends of the two damper assemblies being mounted to rear side surfaces of the two mounting portions, respectively, and upper mounting ends of the two damper assemblies being adapted to be mounted to a vehicle body.

7. The torsion beam suspension according to claim 6, wherein a mounting plate extending in the front-rear direction is provided on a front side surface of at least one of the mounting portions;

the damping device further comprises a damping spring, and the damping spring is used for being installed between the installation supporting plate and the vehicle body.

8. The torsion beam suspension according to claim 7, wherein the damping means further comprises an upper rubber cushion for being provided between the damping spring and the vehicle body; and/or the presence of a gas in the gas,

damping device still includes lower rubber cushion, lower rubber cushion is used for locating damping spring with between the mounting plate.

9. The torsion beam suspension according to claim 7, wherein the shock absorbing device further includes a cushion block mounted to an upper end surface of the mounting portion between the two mounting seats.

10. The torsion beam suspension according to claim 1, wherein a connecting arm extending in the front-rear direction is provided on the front side of the mounting portion, and a free end of the connecting arm is adapted to be mounted to a vehicle body.

Technical Field

The invention relates to the field of manufacturing and designing of vehicles, in particular to a torsion beam suspension.

Background

Automotive suspensions are divided into three categories: the suspension system comprises an independent suspension, a dependent suspension and a semi-independent suspension, wherein the independent suspension is like a flower connecting rod suspension, the structure is complex, the dependent suspension is like a steel plate spring suspension, the comfort is crossed, the semi-independent suspension is like a torsion beam suspension, the comfort is good, the structure is simple, and the lateral impact resistance is strong; in a torsion beam suspension, the roll center is an important index for judging the roll resistance of a vehicle.

The roll center is determined by connecting the mounting point of the longitudinal beam of the suspension to the axis of symmetry of the suspension, intersecting the axis of the central rotation axis of one wheel, and connecting the intersection to the ground of the other wheel, wherein the intersection of the connecting line and the central axis of the vehicle is the roll center. In the existing torsion beam suspension, the roll center of the whole vehicle is low, the roll moment is large, the roll angle is large, the roll rigidity is small, and the control performance is poor.

Disclosure of Invention

The invention mainly aims to provide a torsion beam suspension and aims to solve the problem of a side-tipping center bottom.

To achieve the above object, the present invention provides a torsion beam suspension including:

the torsion beam assembly comprises a torsion beam extending along the left-right direction and two mounting parts arranged at two ends of the torsion beam, and the torsion beam is provided with a projection area in a horizontal plane; and the number of the first and second groups,

the two installation bases are installed on the upper end face of the installation portion respectively, the installation bases are used for installing hubs, each installation base is provided with an installation center corresponding to the hub, an installation center line is formed between the installation centers, and the part, corresponding to the torsion beam, of the projection line of the installation center line in the horizontal plane is located in the projection area.

Optionally, the torsion beam assembly further includes a plurality of welding plates extending left and right, and the plurality of welding plates are spliced with each other to form the torsion beam.

Optionally, at least one of the welding plates is provided with a lightening hole in a penetrating manner.

Optionally, in the axial direction of the torsion beam, the plurality of welding plates are connected end to form a mounting space extending in the left-right direction in the torsion beam;

the torsion beam assembly further comprises a reinforcing pipe which extends leftwards and rightwards, and the reinforcing pipe is arranged in the installation space.

Optionally, the torsion beam suspension further includes a tie rod, the tie rod extends in the left-right direction, one end of the tie rod is rotatably mounted to the rear side surface of one of the mounting portions along the front-back axis, and the other end of the tie rod is used for being mounted to the vehicle body.

Optionally, the torsion beam suspension further includes a damping device, the damping device includes two damper assemblies, lower mounting ends of the two damper assemblies are correspondingly mounted to rear side faces of the two mounting portions, and upper mounting ends of the two damper assemblies are used for being mounted to a vehicle body.

Optionally, the front side surface of at least one mounting portion is provided with a mounting supporting plate extending in the front-back direction;

the damping device further comprises a damping spring, and the damping spring is used for being installed between the installation supporting plate and the vehicle body.

Optionally, the damping device further comprises an upper rubber cushion, and the upper rubber cushion is arranged between the damping spring and the vehicle body; and/or the presence of a gas in the gas,

damping device still includes lower rubber cushion, lower rubber cushion is used for locating damping spring with between the mounting plate.

Optionally, the damping device further comprises a buffer block, and the buffer block is mounted on the upper end face of the mounting portion and located between the two mounting seats.

Optionally, the front side of the mounting portion is provided with a connecting arm extending forwards and backwards, and the free end of the connecting arm is used for being mounted on the vehicle body.

In the technical scheme of the invention, the two mounting seats are used for mounting the wheel hubs respectively, the mounting seats are arranged on the upper end surface of the mounting part, and the projection line of the mounting center line in the horizontal plane is positioned in the projection area, so that the roll center is kept on the mounting center line, and the position of the roll center is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view showing a position structure of a roll center in the prior art;

fig. 2 is a schematic top view of a torsion beam suspension according to the present invention;

FIG. 3 is a rear view of the torsion beam suspension of FIG. 1;

fig. 4 is a structural view illustrating the position of the roll center.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Torsion beam suspension	33	Buffer block
1	Torsion beam assembly	A1	Mounting point
				11	Torsion beam	B1	Intersection point
111	Lightening hole	C1	Wheel ground
				112	Mounting support plate	X1	Center point of axis
12	Tie rod	Y1	Central axis of rotation
				13	Connecting arm	P1	Center of current heeling
2	Mounting seat	B2	Installation center line
				31	Shock absorber assembly	P2	Center of roll
32	Damping spring

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Automotive suspensions are divided into three categories: the suspension system comprises an independent suspension, a dependent suspension and a semi-independent suspension, wherein the independent suspension is like a flower connecting rod suspension, the structure is complex, the dependent suspension is like a steel plate spring suspension, the comfort is crossed, the semi-independent suspension is like a torsion beam suspension, the comfort is good, the structure is simple, and the lateral impact resistance is strong; in a torsion beam suspension, the roll center is an important index for judging the roll resistance of a vehicle.

Referring to fig. 1, the roll center is determined by connecting a mounting point a1 of a longitudinal beam of the suspension to a center point X1 of a symmetric axis of the suspension, intersecting a central axis Y1 of a wheel, and connecting an intersection B1 to a ground C1 of another wheel, where the intersection of the connecting line and the central axis of the vehicle is a current roll center P1. In the existing torsion beam suspension, the roll center of the whole vehicle is low, the roll moment is large, the roll angle is large, the roll rigidity is small, and the control performance is poor.

The present invention provides a torsion beam suspension, which aims to solve the problem of low roll center, wherein fig. 2 to 4 are an embodiment provided by the present invention.

Referring to fig. 2 to 4, the present invention provides a torsion beam suspension 100, which includes a torsion beam assembly 1 and two mounting seats 2; the torsion beam assembly 1 comprises a torsion beam 11 extending along the left-right direction and two mounting parts arranged at two ends of the torsion beam 11, and the torsion beam 11 is provided with a projection area in a horizontal plane; two mount pad 2 installs respectively to two on the up end of installation department, mount pad 2 is used for installing wheel hub, each mount pad 2 has and is used for corresponding wheel hub's installation center, two form an installation central line B2 between the installation center, installation central line B2 corresponds at the projection line in the horizontal plane torsion beam 11's part is located in the projection area.

In the technical scheme of the invention, the two mounting seats 2 are used for mounting hubs respectively, the mounting seats 2 are arranged on the upper end surfaces of the mounting parts, the projection line of the mounting center line B2 in the horizontal plane is positioned in the projection area, the roll center P2 is kept on the mounting center line, and the position of the roll center is increased.

In order to improve the torsion of the torsion beam 11, the torsion beam assembly 1 further includes a plurality of welding plates extending along the left-right direction, and the plurality of welding plates are spliced with each other to form the torsion beam 11.

Furthermore, at least one of the welding plates is provided with a lightening hole 111 in a penetrating way. The weight of the torsion beam 11 is reduced by the lightening holes 111.

In addition, in the axial direction of the torsion beam 11, a plurality of welding plates are connected end to form a mounting space extending in the left-right direction in the torsion beam; torsion beam subassembly 1 still includes to the reinforcing tube that extends the setting about following, the reinforcing tube is located in the installation space. Through the reinforcing pipe, the rigidity of the torsion beam is improved, and the use reliability of the torsion beam 1 is ensured.

In this embodiment, the torsion beam suspension 1 further includes a tie rod 12, the tie rod 12 extends in the left-right direction, one end of the tie rod 12 is rotatably mounted to the rear side surface of one of the mounting portions along the front-rear axis, and the other end is used for being mounted to the vehicle body. The rigidity of the torsion beam suspension 100 is improved, certain shock absorption is achieved, and the bearing performance of the whole vehicle is improved.

In addition, the torsion beam suspension 1 further comprises a damping device, the damping device comprises two damper assemblies 31, the lower mounting ends of the two damper assemblies 31 are correspondingly mounted on the rear side surfaces of the two mounting portions, and the upper mounting ends of the two damper assemblies 31 are used for being assembled on a vehicle body. Through the damper assembly, the torsion beam suspension 100 has a certain damping effect, and the comfort of a vehicle is improved.

It should be noted that the shock absorber assembly 31 extends rearward and upward to save the installation space, so that the wheel package is reduced during installation, and the usage space in the vehicle is increased.

Furthermore, the front side surface of at least one mounting part is provided with a mounting supporting plate 112 extending along the front-back direction; the shock absorbing device further comprises a shock absorbing spring 32, and the shock absorbing spring 32 is used for being mounted between the mounting support plate 112 and the vehicle body. Through damping spring 32, further improve the shock attenuation effect of vehicle, improve the use comfort of vehicle.

Furthermore, in order to prolong the service life of the damping spring 32, the damping device further comprises an upper rubber cushion, and the upper rubber cushion is arranged between the damping spring and the vehicle body; the damper spring 32 is protected by the upper rubber.

Similarly, damping device still includes lower rubber cushion, lower rubber cushion is used for locating damping spring with between the mounting plate. To protect the damper spring 32.

It should be noted that, in the arrangement of the two related technical features of the upper rubber cushion and the lower rubber cushion, they may exist alternatively or simultaneously. Obviously, the simultaneous presence brings the best technical effect.

In addition, in order to protect the torsion beam 11, the damping device further includes a buffer block 33, and the buffer block 33 is installed on the upper end surface of the installation portion and between the two installation seats 2. So as to prevent the vehicle from colliding with the torsion beam 11 during shaking.

In this embodiment, the front side of the mounting portion is provided with a connecting arm 13 extending in the front-rear direction, and the free end of the connecting arm 13 is used for mounting on the vehicle body. Thereby mounting the torsion beam suspension 100 to the vehicle body.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents made by the contents of the present specification and drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.