A torsion beam, rear suspension and vehicle

Abstract

The utility model discloses a torsion beam, rear suspension and car, including torsion beam, vertical arm and positioning board, torsion beam extends along the transverse direction, and vertical arm mirror image sets up in the both ends of torsion beam, and vertical arm forms the cavity structure along the length direction extension, and the cavity structure forms the positioning board installation mouth that extends along the transverse direction outward in the rear end of vertical arm, and the positioning board has certain thickness, and the positioning board embeds in positioning board installation mouth along the thickness direction, and is welded with vertical arm. The vertical arm forms left vertical arm and right vertical arm, and the rear end of left vertical arm and right vertical arm respectively welds the positioning board, and the positioning board can be connected with bearing. Wherein, the positioning board embeds in the inside of positioning board installation mouth of left and right vertical arm respectively, and the positioning portion no longer abuts with the end face of vertical beam, so that the positioning board can adopt miniaturization configuration, and the weight is reduced. Meanwhile, through the installation angle before welding of positioning board in the inside of positioning board installation mouth, the desired camber and toe-in angle can be simply realized, thereby realizing diversification, and the needs of multiple vehicle types can be satisfied.

Description

Technical Field

[0001] This utility model is applicable to the automotive field, and in particular relates to a torsion beam, a rear suspension, and an automobile. Background Technology

[0002] In modern automotive suspension systems, torsion beams are widely used in the rear suspension designs of many economy cars and light vehicles. As a simple and cost-effective solution, torsion beams not only effectively provide lateral stability but also offer advantages such as simplified manufacturing processes and reduced production costs. However, despite their widespread use, traditional torsion beam designs still face several challenges, particularly in terms of vehicle handling, comfort, lightweighting, and overall rigidity. Existing torsion beams typically employ a relatively simple structure, which, while meeting basic stability requirements, is prone to insufficient rigidity and poor handling under complex road conditions or high loads.

[0003] In the existing technology, the positioning plate used to install bearings on the torsion beam mainly adopts a structure in which it is directly welded to the end of the longitudinal arm. That is, the plate surface of the positioning plate is welded to the end of the longitudinal arm. This setting scheme limits the installation angle of the positioning plate and cannot meet the diverse needs of multiple vehicle models.

[0004] In summary, the problems existing in the relevant technologies urgently need to be solved. Utility Model Content

[0005] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a torsion beam, a rear suspension and an automobile.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] In a first aspect, a torsion beam includes a torsion beam, a longitudinal arm, and a positioning plate. The torsion beam extends laterally, and the longitudinal arm is mirror-disposed at both ends of the torsion beam. The longitudinal arm forms a cavity structure extending along its length. The cavity structure forms a positioning plate mounting opening extending laterally outward at the rear end of the longitudinal arm. The positioning plate has a certain thickness and is fitted into the positioning plate mounting opening along its thickness direction and welded to the longitudinal arm.

[0008] In conjunction with the first aspect, in some implementations of the first aspect, the longitudinal arm includes a first wall panel and a second wall panel, the first wall panel and the second wall panel are formed by sheet metal stamping, at least one of the first wall panel and the second wall panel is provided with a folded edge, and the first wall panel and the second wall panel are fastened and welded together by the folded edge to form the cavity structure.

[0009] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, the first wall panel and the second wall panel form a rectangular positioning plate mounting opening at the rear end of the longitudinal arm, and the positioning plate is a rectangle corresponding to the positioning plate mounting opening.

[0010] In combination with the first aspect and the above-mentioned implementation methods, in some implementation methods of the first aspect, the cross-section of the torsion beam is an n-shape with the opening facing downwards, and the front and rear lower edges of the torsion beam are provided with outwardly extending flanges.

[0011] Combining the first aspect and the above-mentioned implementation methods, in some implementation methods of the first aspect, the cross-section of the torsion beam gradually narrows from both ends to the middle, forming a variable cross-section structure that is large at both ends and narrows in the middle.

[0012] In conjunction with the first aspect and the above-described implementations, some implementations of the first aspect further include a vehicle body mounting bracket. The vehicle body mounting bracket includes a top frame forming a frame structure. The top frame has multiple bolt holes and a first ear seat and a second ear seat extending downwards opposite each other. The top frame, the first ear seat, and the second ear seat are integrally cast. The front end of the longitudinal arm is provided with a sleeve. The sleeve is disposed between the first ear seat and the second ear seat, and the sleeve has a bushing connected to the first ear seat and the second ear seat.

[0013] In conjunction with the first aspect and the above-described implementations, some implementations of the first aspect further include a spring mounting tray, which is welded to the rear side of the connection position between the torsion beam and the longitudinal arm, and the spring mounting tray is provided with a spring underpad.

[0014] In combination with the first aspect and the above-described implementations, some implementations of the first aspect further include a shock absorber mounting bracket, which is welded to the rear side of the connection position between the longitudinal arm and the spring mounting tray.

[0015] The second aspect is a rear suspension comprising a torsion beam as described in any implementation of the first aspect.

[0016] Thirdly, an automobile includes a rear suspension as described in any implementation of the second aspect.

[0017] One of the above technical solutions has at least one of the following advantages or beneficial effects: In the technical solution of this utility model, the trailing arms are mirror images of the two ends of the torsion beam, forming a left trailing arm and a right trailing arm. Positioning plates are welded to the rear ends of the left and right trailing arms, and the positioning plates can be connected to bearings. The positioning plates are embedded inside the mounting openings of the left and right trailing arms, and the positioning parts no longer abut against the end face of the longitudinal beam, allowing for a miniaturized structure of the positioning plates and reducing weight. Simultaneously, by adjusting the mounting angle of the positioning plates before welding inside the mounting openings, the desired camber and toe angles can be easily achieved, thus enabling versatility and meeting the needs of multiple vehicle models.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of an embodiment of the rear suspension of this utility model;

[0021] Figure 2 This is a schematic diagram of an embodiment of the torsion beam of this utility model;

[0022] Figure 3 This is a schematic diagram of an embodiment of the longitudinal arm of this utility model;

[0023] Figure 4 This is a schematic diagram of one embodiment of the torsion beam of this utility model;

[0024] Figure 5 yes Figure 4 Cross-sectional view at point AA;

[0025] Figure 6 This is a schematic diagram of one embodiment of the vehicle body mounting bracket of this utility model. Detailed Implementation

[0026] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0027] In this utility model, when directions (up, down, left, right, front, and back) are described, it is only for the convenience of describing the technical solution of this utility model, and does not indicate or imply that the technical features referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0028] In this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number; "above," "below," "within," etc. are understood to include the stated number. In the description of this utility model, if "first" or "second" is used, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0029] In this utility model, unless otherwise explicitly defined, terms such as "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; a fixed connection, a detachable connection, or an integrally formed connection; a mechanical connection, an electrical connection, or a connection capable of mutual communication; or the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model based on the specific content of the technical solution.

[0030] in, Figure 1 The reference direction coordinate system of this utility model embodiment is given below, in conjunction with Figure 1 The embodiments of this utility model will be described in the directions shown.

[0031] See Figure 1 , Figure 2 , Figure 3 An embodiment of this utility model provides a torsion beam, including a torsion beam 100, a longitudinal arm 200, and a positioning plate 300. The torsion beam 100 extends laterally, and the longitudinal arm 200 is mirror-displayed at both ends of the torsion beam 100. The longitudinal arm 200 forms a cavity structure extending along the length direction. At the rear end of the cavity structure, a positioning plate mounting opening 201 extending laterally outward is formed. The positioning plate 300 has a certain thickness and is embedded in the positioning plate mounting opening 201 along the thickness direction and welded to the longitudinal arm 200.

[0032] Combination Figure 1 , Figure 2 , Figure 3In the technical solution of this utility model, the trailing arms 200 are mirror images of the torsion beam 100 at both ends, forming a left trailing arm 202 and a right trailing arm 203. Positioning plates 300 are welded to the rear ends of the left and right trailing arms 202 and 203, respectively. The positioning plates 300 can be connected to bearings. The positioning plates 300 are respectively embedded inside the positioning plate mounting openings 201 of the left and right trailing arms 203, so the positioning part no longer abuts against the end face of the longitudinal beam, allowing the positioning plates 300 to adopt a miniaturized structure and reduce weight. Simultaneously, by adjusting the installation angle of the positioning plates 300 before welding inside the positioning plate mounting openings 201, the desired camber angle and toe angle can be easily achieved, thus achieving versatility and meeting the needs of multiple vehicle models.

[0033] This invention effectively reduces the mass of the torsion beam while ensuring its rigidity and stability under high loads. Furthermore, the simplified design makes the manufacturing process more efficient and convenient, thereby further reducing production costs.

[0034] The longitudinal arm 200 can be formed by extrusion molding or by welding sheet metal. In some embodiments, see [reference needed]. Figure 3 The longitudinal arm 200 includes a first wall panel 204 and a second wall panel 206. The first wall panel 204 and the second wall panel 206 are formed by sheet metal stamping. At least one of the first wall panel 204 and the second wall panel 206 has a folded edge. The first wall panel 204 and the second wall panel 206 are joined and welded together by the folded edges to form a cavity structure. For example, in... Figure 3 In the illustrated embodiment, the first wall panel 204 and the second wall panel 206 are formed by stamping U-shaped sheet metal and then welding them together. Specifically, the first wall panel 204 and the second wall panel 206 form a pipe-shaped positioning plate mounting opening 201 at the rear end of the longitudinal arm 200. The positioning plate 300 is embedded in the positioning plate mounting opening 201 and then fixed by welding. In this embodiment, the longitudinal arm 200 can be configured with a variable cross-section structure, and the structure formed by welding two wall panels is simple while achieving lightweight design.

[0035] The shape of the positioning plate mounting port 201 can be circular, polygonal, or irregular. See some embodiments for details. Figure 3 The first wall panel 204 and the second wall panel 206 form a rectangular positioning plate mounting opening 201 at the rear end of the trailing arm 200, and the positioning plate 300 is rectangular corresponding to the positioning plate mounting opening 201. By adjusting the mounting angle of the positioning plate 300 inside the rectangular positioning plate mounting opening 201 before welding, the desired camber angle and toe angle can be easily achieved, thus enabling versatility and meeting the needs of multiple vehicle models. In this embodiment, by setting both the positioning plate mounting opening 201 and the positioning plate 300 as rectangles, the mounting angle of the positioning plate 300 before welding can be easily adjusted.

[0036] In some embodiments, see Figure 1 , Figure 2 , Figure 4 , Figure 5 The torsion beam 100 has an n-shaped cross-section with the opening facing downwards, and the front and rear lower edges of the torsion beam 100 are provided with outwardly extending flanges 101. In this embodiment, the torsion beam 100 adopts an n-shaped cross-section, which, together with the horizontal flanges at the ends, can improve torsional stiffness and meet the operational safety performance requirements.

[0037] Further, see Figure 4 The cross-section of the torsion beam 100 gradually narrows from both ends to the middle, forming a variable cross-section structure that is large at both ends and narrows in the middle. In this embodiment, the variable cross-section structure of the torsion beam 100 can reduce weight. This structure can improve durability and prevent stress concentration in the middle of the torsion beam, which could lead to durability damage.

[0038] In some embodiments, see Figure 1 , Figure 6 The torsion beam also includes a vehicle body mounting bracket 400, which connects the torsion beam to the vehicle body. The vehicle body mounting bracket 400 includes a top frame 401 forming a frame structure. The top frame 401 has multiple bolt holes 404 and two opposing, downwardly extending lugs 402 and 403. The top frame 401, the first lug 402, and the second lug 403 are integrally cast. A sleeve 205 is provided at the front end of the longitudinal arm 200, positioned between the first lug 402 and the second lug 403. The sleeve 205 contains bushings that connect to the first lug 402 and the second lug 403. In this embodiment, the vehicle body mounting bracket 400 can be fixed to the vehicle body crossbeam with multiple bolts. When the vehicle moves up and down, the torsion beam swings up and down along the line connecting the center lines of the two end bushings. Due to the use of multi-point bolt installation, directly assembled onto the crossbeam, high precision is achieved, and the impact on performance is smaller compared to the hole offset caused by traditional bracket welding. This ensures optimal design. Simultaneously, the axial force of each bolt can be reduced, preventing overall slippage under extreme conditions. The replaceable body mounting bracket 400, connected by bolts, can be unfolded and replaced when damaged under extreme conditions, avoiding the difficulty of repairing traditional brackets when broken. Furthermore, compared to the previous sheet metal stamping structure, the body mounting bracket 400 in this embodiment is made of cast aluminum or cast iron, offering better strength and durability. Vehicles are subjected to various forces during operation. When subjected to lateral forces, the torsion beam's vertical movement can easily cause lateral transmission, leading to deviation and other adverse effects at high speeds, impacting driving stability. This embodiment, through the newly developed high-strength bracket and multi-point fastening to the body crossbeam, exhibits minimal deformation under lateral forces, significantly improving handling and safety performance compared to traditional methods.

[0039] Further, see Figure 1 , Figure 2The torsion beam also includes a spring mounting tray 500, which is welded to the rear side of the connection between the torsion beam 100 and the longitudinal arm 200. The spring mounting tray 500 is provided with a spring under-pad 501, through which the spring can be supported and mounted on the spring mounting tray 500. In this embodiment, the spring mounting tray 500 is welded to the rear side of the connection between the torsion beam 100 and the longitudinal arm 200, which effectively improves the structural strength of the connection between the torsion beam 100 and the longitudinal arm 200, and also reduces weight and space through this compact design.

[0040] In some embodiments, see Figure 1 , Figure 2 The torsion beam also includes a damper mounting bracket 600, which is welded to the rear side of the connection point between the longitudinal arm 200 and the spring mounting tray 500. In this embodiment, this compact design reduces weight and space.

[0041] See Figure 1 The present invention also provides a rear suspension, including a shock absorber 700, a spring 800, and a torsion beam in any of the above embodiments.

[0042] An embodiment of this utility model also provides an automobile, including the rear suspension of any of the above embodiments.

[0043] In the description of this specification, references to terms such as "example," "embodiment," or "some embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A torsion beam, characterized in that, The device includes a torsion beam, a longitudinal arm, and a positioning plate. The torsion beam extends laterally, and the longitudinal arm is mirror-located at both ends of the torsion beam. The longitudinal arm forms a cavity structure extending along its length. The cavity structure forms a positioning plate mounting opening extending laterally outward at the rear end of the longitudinal arm. The positioning plate has a certain thickness and is fitted into the positioning plate mounting opening along its thickness direction and welded to the longitudinal arm.

2. The torsion beam according to claim 1, characterized in that, The longitudinal arm includes a first wall panel and a second wall panel. The first wall panel and the second wall panel are formed by stamping sheet metal. At least one of the first wall panel and the second wall panel is provided with a folded edge. The first wall panel and the second wall panel are fastened and welded together by the folded edge to form the cavity structure.

3. The torsion beam according to claim 2, characterized in that, The first and second wall panels form a rectangular positioning plate mounting opening at the rear end of the longitudinal arm, and the positioning plate is a rectangle corresponding to the positioning plate mounting opening.

4. The torsion beam according to claim 1, characterized in that, The cross-section of the torsion beam is n-shaped with the opening facing downwards, and the front and rear lower edges of the torsion beam are provided with outwardly extending flanges.

5. The torsion beam according to claim 4, characterized in that, The cross-section of the torsion beam gradually narrows from both ends to the middle, forming a variable cross-section structure that is large at both ends and narrows in the middle.

6. The torsion beam according to claim 1, characterized in that, It also includes a vehicle body mounting bracket, which includes a top frame forming a frame structure. The top frame has multiple bolt holes and a first ear seat and a second ear seat extending downwards opposite each other. The top frame, the first ear seat and the second ear seat are integrally cast. The front end of the longitudinal arm is provided with a sleeve, which is disposed between the first ear seat and the second ear seat. The sleeve has a bushing that connects to the first ear seat and the second ear seat.

7. The torsion beam according to claim 1, characterized in that, It also includes a spring mounting tray, which is welded to the rear side of the connection between the torsion beam and the longitudinal arm, and the spring mounting tray is provided with a spring underpad.

8. The torsion beam according to claim 7, characterized in that, It also includes a shock absorber mounting bracket, which is welded to the rear side of the connection position between the longitudinal arm and the spring mounting tray.

9. A rear suspension, characterized in that, The torsion beam includes any one of claims 1 to 8.

10. A car, characterized in that, Includes the rear suspension as described in claim 9.

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