Independent suspension adopting torsion bar spring and vehicle

Abstract

The utility model provides an independent suspension adopting a torsion bar spring. The independent suspension comprises a torsion bar spring body, a ball pin assembly and a swing arm assembly. The outer end of the torsion rod spring body is installed on a vehicle body through a vehicle body end installation support, at least one positioning assembly is arranged in the middle section of the torsion rod spring body, and the torsion rod spring body is connected to the vehicle body or a vehicle frame. The end portion of the inner side end of the torsion rod spring body is connected with the first end of a ball pin seat of the ball pin assembly, the ball pin is arranged on the ball pin seat, the second end of the ball pin seat is connected with one end of the swing arm body, and the swing arm body is connected with a frame or an auxiliary frame through a swing arm fixing support at the other end of the swing arm body. The independent suspension adopting the torsion bar spring is simple in structure, has good space arrangement performance, can provide good suspension rigidity and damping performance, and can improve the controllability and stability of a vehicle. The utility model further provides the vehicle with the independent suspension.

Description

Technical Field

[0001] The present application relates to the technical field of automobile suspension, and in particular, to an independent suspension using a torsion bar spring; the present application also relates to a vehicle using the independent suspension using the torsion bar spring. Background Art

[0002] In the field of automobile manufacturing, independent suspension systems are widely used to improve the comfort, handling and stability of automobiles. Independent suspension systems allow each wheel to move independently to adapt to uneven roads and vehicle handling requirements. Currently, common independent suspension systems include McPherson suspension, double wishbone suspension and multi-link suspension.

[0003] However, existing independent suspension systems have some limitations in some aspects. For example, common independent suspensions use coil springs to provide support and shock absorption functions for the suspension system. However, coil springs take up a relatively large space, which limits their use for many vehicles with limited chassis layout space.

[0004] To this end, the prior art has used torsion bar springs instead of coil springs in independent suspension systems in some cases to overcome the above-mentioned technical defects; however, although the independent suspension system using torsion bar springs provided by the prior art solves the problems existing in the use of coil springs, it still has obvious defects, especially the structure is too complicated and cannot be well adapted to vehicles with limited chassis layout space; in addition, the independent suspension system using torsion bar springs provided by the prior art cannot provide the requirements for flexible adjustment of installation dimensions. Utility Model Content

[0005] The present application provides an independent suspension using a torsion bar spring, which aims to solve the problem of overly complex structure in the prior art; in some preferred embodiments based on the independent suspension, the installation size can be flexibly adjusted to meet the requirements of specific vehicles and even different models during the specific installation process. The present application also provides a vehicle using the above-mentioned independent suspension using a torsion bar spring.

[0006] The embodiment of the present application provides an independent suspension using a torsion bar spring, including a torsion bar spring body, a ball stud assembly, and a swing arm assembly;

[0007] The outer end of the torsion bar spring body is installed on the vehicle body through a vehicle body end mounting bracket, and at least one positioning assembly is provided in the middle section of the torsion bar spring body to connect the torsion bar spring body to the vehicle body or the frame; the inner end of the torsion bar spring body is connected to the first end of the ball pin seat of the ball pin assembly, the ball pin is provided on the ball pin seat, the second end of the ball pin seat is connected to one end of the swing arm body, and the swing arm body is connected to the frame or the subframe through the swing arm fixing bracket at the other end.

[0008] Optionally, a spline connection is adopted between the outer end of the torsion bar spring body and the vehicle body end mounting bracket.

[0009] Optionally, the positioning assembly includes a press-fit bushing and a clamp cooperating therewith, and the two clamps are cooperating on the outer diameter surface of the middle section of the torsion bar spring body, and are connected to the vehicle body or frame through a bolt fixing structure arranged on the wing of the press-fit bushing.

[0010] Optionally, the structure in which the end of the inner section of the torsion bar spring body is connected to the first end of the ball pin seat of the ball pin assembly adopts an adjustable connection structure.

[0011] Optionally, the second end of the ball pin seat is connected to the structure of the swing arm body, and an adjustable connection structure is adopted.

[0012] Optionally, the adjustable connection mechanism is a bolt connection or a threaded connection.

[0013] Optionally, the Y-direction dimension of the independent suspension can be adjusted through the adjustable connection structure.

[0014] Optionally, the torsion bar spring body has a bent structure.

[0015] Optionally, the ball pin seat is an overall V-shaped structure.

[0016] Optionally, an independent suspension using a torsion bar spring as described in any of the above items is adopted.

[0017] Compared with the prior art, the independent suspension using a torsion bar spring provided in the present application comprises a torsion bar spring body, a ball pin assembly, and a swing arm assembly; the outer end of the torsion bar spring body is installed on the vehicle body through a vehicle body end mounting bracket, and at least one positioning assembly is provided in the middle section to connect the torsion bar spring body to the vehicle body or the frame; the end of the inner section of the torsion bar spring body is connected to the first end of the ball pin seat of the ball pin assembly, the ball pin is provided on the ball pin seat, the second end of the ball pin seat is connected to the swing arm body, and the swing arm body is connected to the frame or the subframe through the swing arm fixing bracket; the above-mentioned independent suspension using a torsion bar spring has a simple structure, so that it has good spatial placement performance, and the use of a torsion bar spring can provide good suspension stiffness and shock absorption performance, thereby improving the handling and stability of the vehicle.

[0018] In a preferred embodiment of the present application, the structure in which the inner end of the torsion bar spring body is connected to the first end of the ball pin seat of the ball stud assembly adopts an adjustable connection structure; similarly, the structure in which the second end of the ball pin seat is connected to the swing arm body may also adopt an adjustable connection structure; through the above-mentioned adjustable connection structure, the Y-direction dimension of the independent suspension can be adjusted to meet occasions with different requirements, thereby effectively increasing the adaptability of the above-mentioned independent suspension structure using a torsion bar spring to the usage occasions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 is a side view of an independent suspension using a torsion bar spring provided in an embodiment of the present application;

[0021] Figure 2 A top view of an independent suspension using a torsion bar spring provided in an embodiment of the present application;

[0022] Figure 3 The independent suspension using a torsion bar spring provided in the embodiment of the present application is provided along the Figure 2 Sectional view of AA in the middle;

[0023] Figure 4 The independent suspension using a torsion bar spring provided in the embodiment of the present application is provided along the Figure 2 Cross-sectional view of the middle BB;

[0024] Figure 5 A side view of an independent suspension using a torsion bar spring provided in an embodiment of the present application;

[0025] Figure 6 The independent suspension using a torsion bar spring provided in the embodiment of the present application is provided along the Figure 5 Cross-sectional view of the CC section;

[0026] Figure 7 An axonometric view of an independent suspension using a torsion bar spring provided in an embodiment of the present application.

[0027] Reference numerals:

[0028] Vehicle body end mounting bracket 1, positioning assembly 2, press-fit bushing 2-1, clamp 2-2, torsion bar spring body 3, ball stud assembly 4, ball stud seat 4-1, ball stud 4-2, swing arm assembly 5, swing arm body 5-1, swing arm fixing bracket 5-2. DETAILED DESCRIPTION

[0029] Many specific details are described in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present application. Therefore, the present application is not limited to the specific implementation disclosed below.

[0030] A specific implementation of an independent suspension using a torsion bar spring provided by the present application will be described in detail below. Figures 1 to 5 The accompanying drawings of the present application are used to illustrate the technical solutions involved in the embodiments.

[0031] An embodiment of the present application provides an independent suspension using a torsion bar spring.

[0032] The present application provides an independent suspension using a torsion bar spring. Figure 1-Figure 5 As shown, the independent suspension using the torsion bar spring includes: a torsion bar spring body 3, a ball stud assembly 4 and a swing arm assembly 5.

[0033] Among them, the body-end mounting bracket 1 is connected to one end of the torsion bar spring body 3, and adopts an adjustable connection structure or a fixed structure. The adjustable connection structure includes but is not limited to bolts, threaded connections, etc. The body-end mounting bracket 1 refers to a connection structure used to fix the automobile body and components such as the chassis or engine. The body-end mounting bracket 1 not only needs to bear the weight of the vehicle, but also needs to bear various dynamic loads during driving. The body-end mounting bracket can be connected to the automobile by bolt connection, welding, bonding, snap connection, spline connection, etc. The body-end mounting bracket 1 can be installed at multiple positions of the automobile. For example, the body-end mounting bracket 1 can be used to connect the engine and the body to absorb the vibration generated by the engine. The body-end mounting bracket 1 connects the suspension system and the body to provide support for the suspension system.

[0034] In the embodiment of the present application, the outer end of the torsion bar spring body 3 is mounted on the vehicle body or frame through the vehicle body end mounting bracket 1. The outer end of the torsion bar spring body 3 is splined to the vehicle body end mounting bracket 1. Those skilled in the art may also choose other connection methods such as bolt connection, welding, and snap connection according to actual needs. At least one positioning component 2 is provided in the middle section of the torsion bar spring body 3, which is used to connect the torsion bar spring body 3 to the vehicle body or frame. In the preferred embodiment of the present application, the positioning component 2 includes: a press-fit bushing 2-1 and a clamp 2-2 matched therewith, and the two are clamped on the outer diameter surface of the middle section of the torsion bar spring body 3, and the connection with the vehicle body or frame is achieved by a bolt fixing structure provided on the wing of the press-fit bushing 2-1. This connection method can provide good space placement performance and can adapt to vehicles with limited chassis layout space. Those skilled in the art may also choose to add other common positioning components, such as rubber bushings, etc. according to actual needs.

[0035] The torsion bar spring body 3 is an important innovative part of this embodiment. The torsion bar spring body 3 is usually made of high-strength steel, has good elasticity and durability, and is a long strip of metal rod with both ends fixed, wherein the outer end is installed on the vehicle body or frame through the vehicle body end mounting bracket 1 as described above, and the middle rod body can be twisted; the above-mentioned positioning component 2 is set in the middle to connect it to the vehicle body or frame; the other end of the torsion bar spring body 3 is connected to one end of the ball pin component 4, and finally connected to the swing arm component 5 through the ball pin component 4. The torsion bar spring body 3 utilizes the elasticity of its material to elastically support the weight of the vehicle, maintain the balance and stability of the vehicle, and absorb shocks and vibrations. When the vehicle is traveling on an uneven road, the torsion deformation of the torsion bar spring body 3 can absorb shocks and vibrations, and the torsion bar spring body 3 after twisting has a tendency to return to its original state, which provides elastic restoring force for the suspension system. In addition, the torsion bar spring body 3 can also provide stable wheel positioning, which helps to improve the vehicle's handling and stability and adapt to different driving conditions. At the same time, compared with metal springs, the stress distribution generated by the torsion bar spring when twisted is more uniform, which helps to reduce metal fatigue.

[0036] The torsion bar spring body 3 itself is a slender rod with a relatively small volume and space occupied. Compared with traditional coil springs or leaf springs, torsion bar springs do not require a large curling space; secondly, the torsion bar spring absorbs and releases energy by twisting. This force transmission method does not require additional mechanical parts, such as the spring seat of the coil spring or the bracket of the leaf spring, making the force transmission more efficient. At the same time, the elastic energy stored per unit volume of the torsion bar spring is large, which means that under the same volume, the torsion bar spring can provide more energy storage; thirdly, due to the compactness of the torsion bar spring, the design of the entire suspension system can be simplified, reducing the number of suspension components, thereby saving space, and the torsion bar Springs can also be designed with different lengths and stiffnesses as needed, which allows them to adapt to various space constraints. By adjusting the installation angle of the fixed end of the torsion bar spring, automatic adjustment of the vehicle body height can be easily achieved; and some torsion bar spring designs allow adjustment of their stiffness, which can adjust the performance of the suspension without changing the size of the torsion bar spring itself; torsion bar springs usually have good durability due to their structural characteristics, and can withstand long-term repeated loading without fatigue damage, and torsion bar springs do not require lubrication, thereby reducing maintenance costs and potential maintenance problems. The maintenance of torsion bar springs is also relatively simple, and usually only requires checking the fixing of the torsion bar and the wear of the connecting parts.

[0037] In this embodiment, the torsion bar spring may adopt a bent structure, for example, an L-shaped structure, with one end providing torque and the other end replacing the swing arm. In this way, the torsion bar spring can replace the ordinary coil spring to provide stiffness for the entire vehicle, and can also act as a part of the swing arm, so that the structure is simple and the cost is lower. It also saves layout space to a great extent, especially the layout space of the wheel side, and can have a larger tire envelope, providing more optimization space for steering.

[0038] In the preferred embodiment of the present application, the ball pin assembly 4 includes: a ball pin seat 4-1 and a ball pin 4-2. One end of the ball pin 4-1 is spherical, and the other end is rod-shaped. The spherical end cooperates with the inner spherical surface provided by the ball pin seat 4-1 to provide a hinge point. The ball pin seat 4-1 is a V-shaped structure as a whole. One end of the V-shaped structure is the first end, which is connected to the inner end of the torsion bar spring body 3. The connection structure can adopt an adjustable connection structure. The adjustable connection mechanism is, for example, bolted or threaded. The other end of the V-shaped structure of the ball pin seat 4-1 is the second end, which is connected to the swing arm body 5. The connection can also adopt an adjustable connection structure. The adjustable connection mechanism is, for example, bolted or threaded. By adopting an adjustable connection structure, the Y-direction dimension (i.e., the width dimension) of the ball pin seat can be adjusted to meet the needs of more wheelbase models, and the ball pin seat can be locked to avoid disengagement. The length can be infinitely adjusted within a certain range to adapt to the suspension sharing problem of more vehicles on the same platform, saving the component development cycle, material management costs, mold costs, etc.

[0039] In the embodiment of the present application, the swing arm assembly 5 comprises: a swing arm body 5-1 and a swing arm fixing bracket 5-2. The swing arm body 5-1 is connected to the vehicle frame or the sub-frame via the swing arm fixing bracket 5-2.

[0040] The swing arm body 5-1 may be designed to be straight, curved or have a specific shape to adapt to different suspension layouts and vehicle performance requirements, and the swing arm body 5-1 may be provided with one or more connection points for connecting with other suspension components such as wheels, shock absorbers, stabilizer bars, etc. In this embodiment, one end of the swing arm body 5-1 is connected to the second end of the V-shaped ball pin seat 4-1, and the other end of the swing arm body 5-1 is connected to the swing arm fixing bracket 5-2 by bolts, welding or clamps, and then connected to the frame or subframe through the swing arm fixing bracket 5-2.

[0041] The swing arm fixing bracket 5-2 may be provided with bolt holes or threaded holes for connecting with the vehicle body or other components of the suspension system. The main function of the swing arm fixing bracket 5-2 is to fix the swing arm body 5-1 to the frame or subframe to ensure the stability of the suspension system.

[0042] In the embodiment of the present application, when the swing arm body 5-1 is used in combination with the swing arm fixing bracket 5-2, they are responsible for transferring the dynamic load of the wheel to the vehicle body and ensuring the correct relative position between the wheel and the vehicle body.

[0043] The above-mentioned independent suspension using torsion bar springs is used in a vehicle, and thus an embodiment of a vehicle using the independent suspension of the present application is obtained. When in use, a pair of the independent suspensions can be used symmetrically on wheels in the same row at the front and rear positions, or can be used on all wheels. According to the specific installation environment, the adjustable connection structure can be used to adjust the independent suspensions to meet the different assembly requirements of each installation position.

[0044] The embodiment of the present application provides an independent suspension using a torsion bar spring and a vehicle using the independent suspension. The independent suspension includes a torsion bar spring body 3, a ball pin assembly 4 and a swing arm assembly 5. The torsion bar spring body 3 is connected to the vehicle body or frame through a positioning assembly 2, the inner end of the torsion bar spring body 3 is connected to the first end of the ball pin seat 4-1 of the ball pin assembly 4, and the second end of the ball pin seat 4-1 is connected to the swing arm body 5. In the preferred embodiment of the present application, the ball pin seat 4-1 and the torsion bar spring body 3 and the swing arm body 5-1 of the swing arm assembly 5 are all bolted, which can adjust the Y-direction dimension (width dimension) of the ball pin seat, and can be locked to avoid slipping out, and the length can be infinitely adjusted within a certain range. The independent suspension using the above-mentioned torsion bar spring has the advantages of simple structure, good spatial placement performance, good suspension stiffness and shock absorption performance, and low cost, and through the adjustable connection structure, the installation size of the independent suspension can be flexibly adjusted to adapt to different usage occasions.

[0045] Although the present application is disclosed as above in the form of a preferred embodiment, it is not intended to limit the present application. Any technical personnel in this field may make possible changes and modifications without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application shall be based on the scope defined by the claims of the present application.

Claims

1. An independent suspension using a torsion bar spring, characterized in that: It comprises a torsion bar spring body (3), a ball pin assembly (4), and a swing arm assembly (5); The outer end of the torsion bar spring body (3) is mounted on the vehicle body through a vehicle body end mounting bracket (1); at least one positioning assembly (2) is arranged in the middle section of the torsion bar spring body (3) to connect the torsion bar spring body (3) to the vehicle body or the frame; the inner end of the torsion bar spring body (3) is connected to the first end of the ball pin seat (4-1) of the ball pin assembly (4); the ball pin (4-2) is arranged on the ball pin seat (4-1); the second end of the ball pin seat (4-1) is connected to one end of a swing arm body (5-1); and the swing arm body (5-1) is connected to the frame or the subframe through the swing arm fixing bracket (5-2) at the other end.

2. The independent suspension using a torsion bar spring according to claim 1, characterized in that: The outer end of the torsion bar spring body (3) and the vehicle body end mounting bracket (1) are connected by a spline.

3. The independent suspension using a torsion bar spring according to claim 1, characterized in that: The positioning assembly (2) comprises a press-fit bushing (2-1) and a clamp (2-2) matched therewith, the two being clamped together on the outer diameter surface of the middle section of the torsion bar spring body (3), and connected to the vehicle body or frame via a bolt fixing structure arranged on the wing portion of the press-fit bushing (2-1).

4. The independent suspension using a torsion bar spring according to claim 1, characterized in that: The inner end of the torsion bar spring body (3) is connected to the first end of the ball pin seat (4-1) of the ball pin assembly (4), and an adjustable connection structure is adopted.

5. The independent suspension using a torsion bar spring according to claim 1, characterized in that: The second end of the ball pin seat (4-1) is connected to the structure of the swing arm body (5-1), and an adjustable connection structure is adopted.

6. The independent suspension using a torsion bar spring according to claim 4 or 5, characterized in that: The adjustable connection structure is a bolt connection or a threaded connection.

7. The independent suspension using a torsion bar spring according to claim 6, characterized in that: The Y-direction dimension of the independent suspension can be adjusted through the adjustable connection structure.

8. The independent suspension using a torsion bar spring according to claim 1, characterized in that: The torsion bar spring body (3) has a bent structure.

9. The independent suspension using a torsion bar spring according to claim 1, characterized in that: The ball pin seat (4-1) is in a V-shaped structure as a whole.

10. A vehicle with independent suspension, characterized in that: An independent suspension using a torsion bar spring as described in any one of claims 1 to 9 is adopted.

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