Torsion beam assembly and vehicle

Abstract

The torsion beam assembly comprises a torsion beam, a longitudinal arm is arranged at the end of the torsion beam, a mounting support connected with a vehicle body is arranged at the front end of the longitudinal arm, a first connecting support and a mounting structure are arranged at the rear end of the longitudinal arm, the first connecting support is used for being connected with a wheel, and the mounting structure is used for being connected with the wheel. The mounting structure is used for mounting the vibration reduction structure; wherein the torsion beam is provided with a weakening opening, and the opening width of the weakening opening is configured to be gradually reduced from the middle of the torsion beam to the two ends of the torsion beam. According to the torsion beam assembly, the weakening opening with the opening width gradually decreasing from the middle of the torsion beam to the two ends of the torsion beam is formed in the torsion beam, the bounce correlation of a left wheel and a right wheel can be reduced under the condition that the structural strength of the torsion beam is guaranteed, then the service life of the torsion beam can be prolonged, and the NVH performance of a vehicle is improved; and the weight of the torsion beam can be reduced by arranging the weakening opening, so that the lightweight design of the vehicle can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle manufacturing, in particular to a torsion beam assembly and a vehicle with the torsion beam assembly. Background Art

[0002] With the development of the national economy and the continuous improvement of living standards, vehicles are becoming more and more important in people's travel. The comfort of vehicle use needs to be emphasized during vehicle production and manufacturing. And to ensure the roll stability of the vehicle, the torsion beam assembly is widely used in existing vehicles. The wheels of the vehicle can be respectively installed at both ends of the torsion beam. When one side wheel bounces up and down, it drives the other side wheel to bounce accordingly, thereby reducing the tilt or shake of the whole body. And because it has a certain torsional stiffness itself, it can play the same role as the anti-roll bar, thereby increasing the roll stiffness of the vehicle and improving the roll stability of the vehicle. And compared with other structures, the torsion beam assembly has the advantages of simple manufacturing, light weight and low cost. However, the existing torsion beam assembly has a high correlation between the bounces of the left and right wheels, resulting in poor NVH performance and riding comfort of the vehicle, and there is room for improvement. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, the utility model provides a torsion beam assembly, which can reduce the correlation between the bounces of the left and right wheels while ensuring the structural strength of the torsion beam, extend the service life of the torsion beam, improve the NVH performance of the vehicle, thereby improving the riding comfort of users, and can improve the lightweight design of the vehicle.

[0004] The torsion beam assembly according to an embodiment of the utility model includes: a torsion beam, a longitudinal arm is provided at the end of the torsion beam, a mounting bracket connected to the vehicle body is provided at the front end of the longitudinal arm, and a first connection bracket and a mounting structure are provided at the rear end of the longitudinal arm. The first connection bracket is used to connect with the wheel, and the mounting structure is used to mount the damping structure; wherein, a weakening opening is provided on the torsion beam, and the opening width of the weakening opening is configured to gradually decrease from the middle of the torsion beam towards both ends.

[0005] The torsion beam assembly according to an embodiment of the utility model, by providing a weakening opening on the torsion beam with an opening width gradually decreasing from the middle of the torsion beam towards both ends, can reduce the correlation between the bounces of the left and right wheels while ensuring the structural strength of the torsion beam, thereby extending the service life of the torsion beam, improving the NVH performance of the vehicle to improve the riding comfort of users, and setting the weakening opening can reduce the weight of the torsion beam, thereby improving the lightweight design of the vehicle, with better use effect and wider application range.

[0006] According to some embodiments of the utility model, the weakening opening is configured to open backward.

[0007] For the torsion beam assembly according to some embodiments of the present utility model, the projection of the weakening opening in the vertical direction is an arc line, and the center of curvature of the arc line is located at the rear side of the torsion beam.

[0008] For the torsion beam assembly according to some embodiments of the present utility model, the width of the weakening opening in the longitudinal direction is less than or equal to half of the width of the torsion beam in the longitudinal direction.

[0009] For the torsion beam assembly according to some embodiments of the present utility model, the torsion beam is configured as a circular tube beam, and the opening width of the weakening opening is less than or equal to the diameter of the torsion beam.

[0010] For the torsion beam assembly according to some embodiments of the present utility model, the length of the weakening opening is less than the total length of the torsion beam; and / or, the weakening opening is symmetrically arranged with respect to the middle part of the torsion beam.

[0011] For the torsion beam assembly according to some embodiments of the present utility model, a bushing is provided at the front end of the longitudinal arm, the mounting bracket is rotatably mounted on the front end of the longitudinal arm through the bushing, and the mounting bracket is provided with at least one mounting point for connecting with the vehicle body.

[0012] For the torsion beam assembly according to some embodiments of the present utility model, the longitudinal arm includes a first sub-plate and a second sub-plate, the first sub-plate and the second sub-plate are spliced and connected together and jointly define a through-setting portion for passing through the end of the torsion beam.

[0013] For the torsion beam assembly according to some embodiments of the present utility model, the mounting structure includes a mounting portion and a second connecting bracket, the mounting portion is used for mounting a coil spring, the second connecting bracket is adapted to be connected with a shock absorber, and the first connecting bracket is located outside the mounting portion.

[0014] The present utility model also provides a vehicle.

[0015] For the vehicle according to the embodiments of the present utility model, it includes the torsion beam assembly described in any one of the above.

[0016] The vehicle and the above-mentioned torsion beam assembly have the same advantages as those of the prior art, which will not be elaborated here.

[0017] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0019] Figure 1 is a schematic structural view of a torsion beam assembly according to an embodiment of the present invention;

[0020] Figure 2 is a schematic partial structure view of a torsion beam assembly according to an embodiment of the present invention Figure 1 ;

[0021] Figure 3 is a schematic partial structure view of a torsion beam assembly according to an embodiment of the present invention Figure 2 ;

[0022] Figure 4 is a schematic partial structure view of a torsion beam assembly according to an embodiment of the present invention Figure 3 .

[0023] Reference numerals:

[0024] torsion beam assembly 100,

[0025] torsion beam 1, weakened opening 11,

[0026] longitudinal arm 2, first sub-plate 21, second sub-plate 22, penetrating portion 23, mounting sink 24, bushing 3, damping hole 31, second connection hole 32, first connection bracket 4, second connection bracket 5, mounting portion 6, mounting bracket 7, connecting plate 71, first connection hole 711, mounting point 72, weight reduction hole 73. Detailed Description of the Embodiment

[0027] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, features defined as "first", "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0029] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] Unless otherwise specified, the front-rear direction in this application is the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction is the transverse direction of the vehicle, i.e., the Y direction; and the up-down direction is the vertical direction of the vehicle, i.e., the Z direction.

[0031] The following refers to Figures 1 - 4 Describe the torsion beam assembly 100 according to an embodiment of the present utility model. It can reduce the bounce correlation of the left and right wheels while ensuring the structural strength of the torsion beam 1, extend the service life of the torsion beam 1, improve the NVH performance of the vehicle, thereby improving the user's riding comfort, and can also improve the lightweight design of the vehicle.

[0032] As Figures 1 - 4 shown, the torsion beam assembly 100 according to an embodiment of the present utility model includes: a torsion beam 1.

[0033] Longitudinal arms 2 are provided at the ends of the torsion beam 1. An installation bracket 7 connected to the vehicle body is provided at the front end of the longitudinal arm 2, and a first connection bracket 4 and an installation structure are provided at the rear end of the longitudinal arm 2. The first connection bracket 4 is used to connect to the wheel, and the installation structure is used to install a damping structure. Among them, the torsion beam 1 is provided with a weakened opening 11, and the opening width of the weakened opening 11 is configured to gradually decrease from the middle of the torsion beam 1 towards both ends.

[0034] Among them, the torsion beam assembly 100 has the advantages of simple manufacturing, light weight, and low cost. The vehicle wheels can be respectively installed at both ends of the torsion beam 1. When one wheel bounces up and down, it drives the other wheel to bounce correspondingly, thereby reducing the tilt or sway of the entire vehicle body. Moreover, due to its own certain torsional stiffness, it can play the same role as a lateral stabilizer bar, thereby increasing the roll stiffness of the vehicle and improving the roll stability of the vehicle.

[0035] Specifically, the torsion beam assembly 100 is provided with a torsion beam 1. The torsion beam 1 can be set as a tubular structure, and its cross-section can be set as a rectangle, an ellipse, a circle, etc. Both ends of the torsion beam 1 can be respectively connected with longitudinal arms 2 by means of welding or the like, and the end of the torsion beam 1 is connected to the middle position of the longitudinal arm 2. The torsion beam 1 extends along the transverse direction of the vehicle, that is, the torsion beam 1 extends along the left-right direction of the vehicle, and the two longitudinal arms 2 can extend along the front-back direction of the vehicle. An installation bracket 7 is provided at the front end of the longitudinal arm 2. The installation bracket 7 can be connected to the front end of the longitudinal arm 2 by means of a connecting piece or the like, and the installation bracket 7 can be connected to the vehicle body by means of a connecting piece or the like. The connecting piece can be set as a bolt or the like, so that the torsion beam assembly 100 can be connected to the vehicle body.

[0036] Furthermore, a first connecting bracket 4 and an installation structure are also provided at the rear end of the longitudinal arm 2. The first connecting bracket 4 is connected to the rear end of the longitudinal arm 2 by means of welding or the like, and the first connecting bracket 4 can be connected to the vehicle wheel by means of a connecting piece or the like. The connecting piece can be set as a bolt or the like, so that the wheel can be fixedly connected to the torsion beam assembly 100, thereby increasing the roll stiffness of the vehicle and improving the roll stability of the vehicle. Moreover, the installation structure can also be connected to the rear end of the longitudinal arm 2 by means of welding or the like. The installation structure can be used to install a damping structure, and the damping structure is connected to the vehicle body, thereby improving the NVH performance of the vehicle and improving the user's comfort.

[0037] Among them, the torsion beam 1 is also provided with a weakening opening 11. The weakening opening 11 can be cut by laser or the like, or the sheet material can be cut before stamping. The opening width of the weakening opening 11 is configured to gradually decrease from the middle of the torsion beam 1 towards both ends, that is, the weakening opening 11 can be set as an elliptical opening or a rhombus opening, etc. In this embodiment, the weakening opening 11 is set as an elliptical opening. The setting of the weakening opening 11 in the torsion beam 1 enables the torsion beam 1 to undergo a certain amount of torsional deformation when stressed at both ends, thereby weakening the correlation of the left and right wheel bounces, improving the NVH performance of the vehicle, and improving the user's riding comfort. Moreover, the opening width of the weakening opening 11 gradually decreases from the middle of the torsion beam 1 towards both ends, which can ensure the structural strength on both sides of the torsion beam 1, prevent the torsion beam 1 from bending, deforming, etc., extend the service life of the torsion beam 1, and the setting of the weakening opening 11 can reduce the weight of the torsion beam 1, thereby improving the lightweight design of the vehicle.

[0038] According to the torsion beam assembly 100 of the embodiment of the present utility model, by providing a weakened opening 11 on the torsion beam 1 with an opening width gradually decreasing from the middle of the torsion beam 1 towards both ends, the correlation of the bouncing of the left and right wheels can be reduced while ensuring the structural strength of the torsion beam 1. Furthermore, the service life of the torsion beam 1 can be extended, the NVH performance of the vehicle can be improved, so as to enhance the riding comfort of the user. Moreover, by providing the weakened opening 11, the weight of the torsion beam 1 can be reduced, and thus the lightweight design of the vehicle can be improved, with better use effects and a wider application range.

[0039] In some embodiments, the weakened opening 11 is configured to be open towards the rear.

[0040] Specifically, the torsion beam assembly 100 is provided with a torsion beam 1 extending in the transverse direction, and the torsion beam 1 is provided with a weakened opening 11. The opening width of the weakened opening 11 is configured to gradually decrease from the middle of the torsion beam 1 towards both ends, so that when the two ends of the torsion beam 1 are stressed, certain torsional deformation can occur, thereby weakening the correlation of the bouncing of the left and right wheels and improving the NVH performance of the vehicle to enhance the riding comfort of the user.

[0041] Furthermore, the weakened opening 11 is configured to be open towards the rear. Longitudinal arms 2 are provided at both ends of the torsion beam 1. The longitudinal arms 2 extend in the front-rear direction. A first connecting bracket 4 is connected to the rear end of the longitudinal arm 2, and the first connecting bracket 4 is used to connect to the wheel, that is, the wheel is located behind the torsion beam 1. By setting the weakened opening 11 to be open towards the rear, that is, setting the weakened opening 11 to be open towards the position of the wheel relative to the torsion beam 1, when the vehicle travels on a bumpy road section, the force received by a single-side wheel can be reduced from being transmitted to the other side wheel, thereby weakening the correlation of the bouncing of the left and right wheels and improving the NVH performance of the vehicle and the riding comfort of the user.

[0042] At the same time, by configuring the weakened opening 11 to be open towards the rear, it can be avoided that stones and other sundries splashed by the road surface during vehicle driving enter the torsion beam 1 through the weakened opening 11, so as to increase the weight of the torsion beam 1, reduce the energy consumption of the vehicle, improve the lightweight of the vehicle, and in the case of liquid accumulation on the road surface, it can be avoided that the liquid enters the torsion beam 1 through the weakened opening 11, so as to cause corrosion and other conditions to the inner wall of the torsion beam 1 and extend the service life of the torsion beam 1.

[0043] In some embodiments, the projection of the weakened opening 11 in the vertical direction is an arc line, and the center of curvature of the arc line is located at the rear side of the torsion beam 1. The torsion beam assembly 100 is provided with a torsion beam 1, and the torsion beam 1 extends in the left-right direction of the vehicle, and as Figure 1As shown, the torsion beam 1 is provided with a weakened opening 11. The opening width of the weakened opening 11 is configured to gradually decrease from the middle of the torsion beam 1 towards both ends, and the projection of the weakened opening 11 in the vertical direction is an arc line, such that the middle part of the torsion beam 1 has a lower torsional stiffness, which can ensure that the left and right wheels do not interfere with each other when bouncing, improve the riding comfort, and can avoid stress concentration at the edge of the weakened opening 11, etc., to ensure the reliability of the torsion beam 1. And the center of curvature of the arc line is located at the rear side of the torsion beam 1, that is, the weakened opening 11 can open towards the rear, and the wheels are located behind the torsion beam 1. Furthermore, the correlation of the left and right wheel bounces can be weakened, and the NVH performance of the vehicle and the riding comfort of the user can be improved.

[0044] In some embodiments, the width of the weakened opening 11 in the longitudinal direction is less than or equal to half of the width of the torsion beam 1 in the longitudinal direction. For example, Figure 1 As shown, the torsion beam 1 is provided with a weakened opening 11. The opening width of the weakened opening 11 is configured to gradually decrease from the middle of the torsion beam 1 towards both ends, and the width of the weakened opening 11 in the longitudinal direction is less than or equal to half of the width of the torsion beam 1 in the longitudinal direction, that is, the width of the weakened opening 11 in the longitudinal direction can be set to be less than half of the width of the torsion beam 1 in the longitudinal direction, or can be set to be equal to half of the width of the torsion beam 1 in the longitudinal direction. Furthermore, the structural strength of the torsion beam 1 can be ensured, and at the same time, the middle part of the torsion beam 1 can have a lower torsional stiffness to ensure that the left and right wheels do not interfere with each other when bouncing and improve the riding comfort.

[0045] In some embodiments, the torsion beam 1 is configured as a circular tube beam, and the opening width of the weakened opening 11 is less than or equal to the diameter of the torsion beam 1.

[0046] Specifically, the torsion beam assembly 100 is provided with a torsion beam 1. The torsion beam 1 extends along the left - right direction of the vehicle, and the torsion beam 1 is set as a tubular structure. In this embodiment, as Figure 1 shown, the torsion beam 1 is configured as a circular tube beam. Setting the torsion beam 1 as a circular tube beam can avoid stress concentration on the torsion beam 1, etc., to ensure the reliability of the torsion beam 1. And the torsion beam 1 is provided with a weakened opening 11, and the opening width of the weakened opening 11 is less than or equal to the diameter of the torsion beam 1, that is, the opening width of the weakened opening 11 can be set to be equal to the diameter of the torsion beam 1, or can be set to be less than the diameter of the torsion beam 1. Furthermore, the structural strength of the torsion beam 1 can be ensured, and at the same time, the middle part of the torsion beam 1 can have a lower torsional stiffness to ensure that the left and right wheels do not interfere with each other when bouncing and improve the riding comfort.

[0047] In some embodiments, the length of the weakened opening 11 is less than the total length of the torsion beam 1; and / or, the weakened opening 11 is symmetrically arranged with respect to the middle of the torsion beam 1.

[0048] Specifically, the torsion beam 1 is provided with a weakened opening 11, and the length of the weakened opening 11 is less than the total length of the torsion beam 1. That is, the torsional stiffness at the middle position of the torsion beam 1 is relatively small, and the lateral stiffness at both ends is relatively large. As a result, both ends of the torsion beam 1 can withstand relatively large lateral forces from the wheels, thereby improving the lateral stiffness of the entire torsion beam assembly 100 and enhancing the handling performance. The middle part of the torsion beam 1 has a relatively low torsional stiffness, which can ensure that the left and right wheels do not interfere with each other when they bounce, thus enhancing the riding comfort.

[0049] Furthermore, the weakened opening 11 can be set as an ellipse or a rhombus, etc., and the weakened opening 11 is symmetrically arranged relative to the middle part of the torsion beam 1. That is, the weakened opening 11 can be symmetrically arranged vertically and can also be symmetrically arranged horizontally, so that the stiffness of the structures at both ends of the torsion beam 1 is the same, and the lateral forces that the wheels can withstand are also the same, avoiding situations such as deformation and fracture due to excessive force on one side of the torsion beam 1, prolonging the service life of the torsion beam 1, and improving the use safety.

[0050] In some embodiments, a bushing 3 is provided at the front end of the trailing arm 2, and the mounting bracket 7 is rotatably mounted on the front end of the trailing arm 2 through the bushing 3. The mounting bracket 7 is provided with at least one mounting point 72 for connecting to the vehicle body.

[0051] Specifically, both ends of the torsion beam 1 are connected to trailing arms 2 extending in the front-rear direction, and a bushing 3 is provided at the front end of the trailing arm 2. An installation notch is formed at the front end of the trailing arm 2, and the installation notch matches the bushing 3. The bushing 3 can be partially located in the installation notch and can be connected to the installation notch by welding or other means, thereby ensuring the reliability of the connection between the bushing 3 and the trailing arm 2. And the mounting bracket 7 is rotatably mounted on the front end of the trailing arm 2 through the bushing 3, and the mounting bracket 7 is connected to the vehicle body, so that the height of the bushing 3 relative to the mounting bracket 7 and the roll center height of the torsion beam assembly 100 can be changed.

[0052] Furthermore, the mounting bracket 7 is provided with two spaced and oppositely distributed connecting plates 71. The connecting plates 71 are formed with first connection holes 711, and the bushing 3 is formed with second connection holes 32. The bushing 3 can extend between the two connecting plates 71, and a connecting member can be sequentially passed through the first connection hole 711 and the second connection hole 32. The connecting member can be set as a bolt or the like, so that the mounting bracket 7 can be movably connected to the bushing 3. And the bushing 3 is provided with a damping layer, and damping holes 31 are arranged in the damping layer. As Figure 2 shown, a plurality of damping holes 31 are provided, and the plurality of damping holes 31 are spaced apart circumferentially. And the damping holes 31 are set as "V"-shaped holes, which are open radially outward, that is, open radially toward the driving direction of the vehicle, so as to reduce the vibration transmitted from the trailing arm 2 to the mounting bracket 7, improve the vehicle NVH performance, and enhance the riding comfort.

[0053] In addition, the mounting bracket 7 is provided with at least one mounting point 72, and the vehicle body may be provided with a mounting matching point. The connecting parts may be sequentially inserted into the mounting point 72 and the mounting matching point to connect the mounting bracket 7 to the vehicle body. The connection is convenient and an assembly robot may be used for assembly to improve production efficiency. The connecting parts may be bolts, etc., and the mounting matching points may be nuts pre-embedded in the vehicle body, etc., and three mounting points 72 may be provided. The three mounting points 72 are spaced apart and the connecting lines therebetween form a triangle, thereby improving connection reliability. At the same time, the mounting bracket 7 is provided with a weight-reducing hole 73, which may improve the lightweight design of the vehicle. The mounting bracket 7 has a simple structure and may reduce the installation cost.

[0054] In some embodiments, the longitudinal arm 2 includes a first sub-plate 21 and a second sub-plate 22 . The first sub-plate 21 and the second sub-plate 22 are spliced ​​and connected and jointly define a penetration portion 23 . The penetration portion 23 is used to penetrate the end of the torsion beam 1 .

[0055] Specifically, both ends of the torsion beam 1 are connected to longitudinal arms 2 extending in the front-rear direction, and Figures 2 - 3 As shown, the longitudinal arm 2 is provided with a first sub-plate 21 and a second sub-plate 22, both of which extend in the front-rear direction, and the first sub-plate 21 is located above the second sub-plate 22, and the first sub-plate 21 and the second sub-plate 22 can be connected by welding and splicing, which can improve the rigidity and strength of the longitudinal arm 2, and is not easy to deform when the vehicle is subjected to a large impact, thereby improving the quality of the entire vehicle.

[0056] Furthermore, the first sub-plate 21 and the second sub-plate 22 can jointly define a penetration portion 23, and the end of the torsion beam 1 can be penetrated in the penetration portion 23. The penetration portion 23 can be set as a circular hole or a rectangular hole, and the end of the torsion beam 1 can be correspondingly set as a circular beam or a rectangular beam, etc. After the end of the torsion beam 1 is penetrated in the penetration portion 23, the torsion beam 1 is connected to the longitudinal arm 2 by welding or the like, which can increase the contact area of ​​the connection, thereby improving the connection reliability and ensuring the safety of the vehicle. At the same time, the first sub-plate 21 is formed with an installation groove 24 to install the installation structure, so that the installation structure has two layers of plates, which can improve the strength and rigidity and ensure reliability.

[0057] In some embodiments, the mounting structure includes a mounting portion 6 and a second connecting bracket 5 , the mounting portion 6 is used to mount the coil spring, the second connecting bracket 5 is suitable for connecting to the shock absorber, and the first connecting bracket 4 is located outside the mounting portion 6 .

[0058] Specifically, the rear end of the longitudinal arm 2 is provided with a mounting structure, and the mounting structure is provided with a mounting portion 6 and a second connecting bracket 5. The rear end of the longitudinal arm 2 is formed with a mounting groove 24, and the mounting portion 6 can be connected to the mounting groove 24 by welding or the like. The mounting portion 6 can be set as a limiting column or a limiting protrusion, etc. In this embodiment, as shown in FIG. Figure 1As shown, the installation part 6 is set as a limit post, and the limit post is configured as a cylindrical tubular structure. The helical spring can be limited and clamped to the limit post, and the second installation bracket 7 can be connected to the rear end of the longitudinal arm 2 by means such as welding. The second connection bracket 5 can be used to connect to the shock absorber. Furthermore, the NVH performance of the vehicle can be improved through the helical spring and the shock absorber to enhance user comfort.

[0059] Furthermore, the first connection bracket 4 is connected to the rear end of the longitudinal arm 2 by means such as welding, and the first connection bracket 4 is arranged outside the installation part 6, that is, the first connection bracket 4 is connected to the side of the longitudinal arm 2 away from each other. The first connection bracket 4 is used to connect to the wheel. Arranging the first connection bracket 4 outside the installation part 6 facilitates the connection between the first connection bracket 4 and the wheel, and further can ensure the connection reliability and improve the use safety of the vehicle.

[0060] The present utility model also proposes a vehicle.

[0061] The vehicle according to the embodiment of the present utility model includes the torsion beam assembly 100 of any one of the above.

[0062] For the vehicle according to the embodiment of the present utility model, the torsion beam assembly 100 is provided with an installation bracket 7. The installation bracket 7 can be connected to the bottom of the vehicle body through connecting parts, etc. And the torsion beam assembly 100 can reduce the jumping correlation of the left and right wheels while ensuring the structural strength of the torsion beam 1 by providing a weakening opening 11 with an opening width gradually decreasing from the middle of the torsion beam 1 towards both ends. Furthermore, the service life of the torsion beam 1 can be extended, the NVH performance of the vehicle can be improved to enhance the user's riding comfort, and setting the weakening opening 11 can reduce the weight of the torsion beam 1. Furthermore, the lightweight design of the vehicle can be improved, and the use effect is better and the applicable range is wider.

[0063] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0064] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A torsion beam assembly, characterized in that: include: A torsion beam, wherein a longitudinal arm is provided at the end of the torsion beam, a mounting bracket connected to the vehicle body is provided at the front end of the longitudinal arm, and a first connecting bracket and a mounting structure are provided at the rear end of the longitudinal arm, wherein the first connecting bracket is used to be connected to the wheel, and the mounting structure is used to install a vibration reduction structure; The torsion beam is provided with a weakened opening, and the opening width of the weakened opening is configured to gradually decrease from the middle portion of the torsion beam toward both ends.

2. The torsion beam assembly according to claim 1, characterized in that: The weakened opening is configured to open rearward.

3. The torsion beam assembly according to claim 2, characterized in that: The vertical projection of the weakened opening is an arc line, and the center of curvature of the arc line is located at the rear side of the torsion beam.

4. The torsion beam assembly according to claim 2, characterized in that: The width of the weakened opening in the longitudinal direction is less than or equal to half of the width of the torsion beam in the longitudinal direction.

5. The torsion beam assembly according to claim 1, characterized in that: The torsion beam is configured as a circular tubular beam, and the opening width of the weakened opening is smaller than or equal to the diameter of the torsion beam.

6. The torsion beam assembly according to claim 1, characterized in that: The length of the weakened opening is less than the total length of the torsion beam; And / or, the weakened opening is symmetrically arranged with respect to the middle portion of the torsion beam.

7. The torsion beam assembly according to any one of claims 1 to 6, characterized in that: A bushing is provided at the front end of the longitudinal arm, and the mounting bracket is rotatably mounted on the front end of the longitudinal arm through the bushing. The mounting bracket is provided with at least one mounting point for connecting with the vehicle body.

8. The torsion beam assembly according to any one of claims 1 to 6, characterized in that: The longitudinal arm includes a first sub-plate and a second sub-plate, the first sub-plate and the second sub-plate are spliced ​​and connected and jointly define a penetration portion, and the penetration portion is used to penetrate the end of the torsion beam.

9. The torsion beam assembly according to any one of claims 1 to 6, characterized in that: The mounting structure comprises a mounting portion and a second connecting bracket, wherein the mounting portion is used to mount a coil spring, the second connecting bracket is suitable for being connected to a shock absorber, and the first connecting bracket is located outside the mounting portion.

10. A vehicle, characterized in that: A torsion beam assembly comprising any one of claims 1-9.

Images