A front suspension torsion bar spring arrangement structure and a longitudinal beam assembly

Abstract

The present invention discloses a front suspension torsion bar spring arrangement structure and a longitudinal beam assembly. The front suspension adopts a double-wishbone torsion bar spring independent suspension. The front suspension torsion bar spring arrangement structure includes a front suspension torsion bar spring and a longitudinal beam on the same side as the front suspension torsion bar spring. The main body of the rod of the front suspension torsion bar spring is arranged inside the longitudinal beam, hiding the torsion bar spring of the suspension system, protecting the front suspension torsion bar spring, and playing roles such as aesthetics, space saving, wind prevention, dust prevention, waterproofing, corrosion prevention, and prevention of external force damage.

Description

Technical Field

[0001] The present invention relates to the technical field of torsion bar springs, and particularly relates to a front suspension torsion bar spring arrangement structure and a longitudinal beam assembly. Background Art

[0002] For existing vehicles with a double-wishbone torsion bar spring independent front suspension, most of them arrange the torsion bar spring outside the longitudinal beam structure, that is, the torsion bar is arranged inside the longitudinal beam, and the disadvantages of the exposed torsion bar are as follows: it is not aesthetically pleasing; it occupies the space of other chassis parts; the torsion bar is prone to interference with surrounding parts during movement; during vehicle driving, sewage, dust, corrosive substances, stones, etc. can damage the torsion bar. This reduces the performance of the suspension system and even causes it to fail. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a front suspension torsion bar spring arrangement structure and a longitudinal beam assembly, which arrange the front suspension torsion bar spring inside the longitudinal beam structure and use the longitudinal beam structure to achieve hiding and protection.

[0004] To solve the above technical problem, the present invention provides a front suspension torsion bar spring arrangement structure. The front suspension adopts a double-wishbone torsion bar spring independent suspension, including a front suspension torsion bar spring and a longitudinal beam on the same side as the front suspension torsion bar spring. The main body of the rod of the front suspension torsion bar spring is arranged inside the longitudinal beam, hiding the torsion bar spring of the suspension system, protecting the front suspension torsion bar spring, and playing roles such as being aesthetically pleasing, saving space, preventing wind, dust, water, corrosion, and external force damage.

[0005] Optionally, the top surface of the front end of the longitudinal beam is low and in a stepped shape, and the space at the top of the front end is used to arrange the front end of the front suspension torsion bar spring; the inner side surface of the middle part of the longitudinal beam gradually inclines outward, so that the tail end of the front suspension torsion bar spring penetrates and extends out.

[0006] Since the main body of the rod of the front suspension torsion bar spring is arranged along the vehicle's front-rear direction, i.e., the X direction, the front end is fixedly connected to the upper wishbone, and the tail end is fixedly connected to the vehicle frame. Through the overall structural design of the longitudinal beam, the front end of the front suspension torsion bar spring is placed in the stepped space at the front end, the rod of the front suspension torsion bar spring extends into the interior of the longitudinal beam, and the longitudinal beam generally has a cavity structure; the tail end extends out for fixation. The whole structural design is ingenious and the layout is reasonable.

[0007] To solve the above technical problem, the present invention provides a longitudinal beam assembly based on the above front suspension torsion bar spring arrangement structure. The longitudinal beam has a double-layer structure, including a longitudinal beam body at the bottom and a front sealing plate and a middle sealing plate arranged on the top surface of the longitudinal beam body. The middle sealing plate includes a U-shaped groove-shaped main body. The top surface height of the front sealing plate is lower than that of the middle sealing plate. The inner side surface of the tail end of the middle sealing plate inclines outward, and a notch is provided on the inner side surface of the tail end.

[0008] In the above-mentioned longitudinal beam assembly, through the longitudinal beam with a double-shaped structure, a step shape is formed at the front end by using a relatively short front sealing plate. The front suspension torsion bar spring is hidden by the middle sealing plate and passes through the notch. The overall design of the longitudinal beam structure is ingenious, achieving better hidden protection for the front suspension torsion bar spring.

[0009] Furthermore, the longitudinal beam body and the middle sealing plate are linearly arranged along the vehicle Y direction in front of the notch, and gradually incline outward from the notch to the tail end.

[0010] Furthermore, the middle sealing plate includes a left side plate, a right side plate, and a front end plate. Both the left side plate and the right side plate are in an L-like shape and are welded to form a U-shaped groove-like main body. The front end plate is arranged at the front end of the groove-like main body and has the same height as the front sealing plate.

[0011] Furthermore, an upper mounting bracket is provided between the front sealing plate and the front end plate. The upper mounting bracket is used to connect the front upper cross arm and the front end of the front suspension torsion bar spring, so that the mounting point of the front suspension torsion bar spring is directly opposite to the groove cavity of the middle sealing plate along the vehicle Y direction.

[0012] Furthermore, a rear sealing plate is also provided on the top surface of the longitudinal beam body. The rear sealing plate is connected to the middle sealing plate to close the top surface of the longitudinal beam body.

[0013] Even further, the rear sealing plate is gradually inclined outward.

[0014] In summary, by adopting the above-mentioned front suspension torsion bar spring arrangement structure and longitudinal beam assembly, the front suspension torsion bar spring of the suspension system is hidden, playing roles such as being aesthetically pleasing, saving space, windproof, dustproof, waterproof, corrosion-proof, and preventing external force damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In the drawings:

[0016] Figure 1 is an overall schematic diagram of the front suspension torsion bar spring arrangement structure of the present invention.

[0017] Figure 2 is a first split schematic diagram of the front suspension torsion bar spring arrangement structure of the present invention.

[0018] Figure 3 is a second split schematic diagram of the front suspension torsion bar spring arrangement structure of the present invention.

[0019] Figure 4 is a top view of the front suspension torsion bar spring arrangement structure of the present invention.

[0020] Figure 5 is an overall structure diagram of the longitudinal beam assembly of the present invention.

[0021] Figure 6 is an overall split structure diagram of the longitudinal beam assembly of the present invention.

[0022] Figure 7 It is the sectional view of the middle gusset plate of the longitudinal beam assembly of the present invention.

[0023] Figure 8 It is the disassembled structure view of the middle gusset plate of the longitudinal beam assembly of the present invention.

[0024] Figure 9 It is the structure view of the upper mounting bracket of the longitudinal beam assembly of the present invention.

[0025] Figure 10 It is the disassembled structure view of the upper mounting bracket of the longitudinal beam assembly of the present invention.

[0026] Figure 11 It is the structure view of the card slot of the longitudinal beam assembly of the present invention.

[0027] Figure 12 It is the structure view of the first longitudinal beam joint of the longitudinal beam assembly of the present invention.

[0028] In the figure, 1. front suspension torsion bar spring; 2. longitudinal beam; 21. longitudinal beam body; 211. induction groove; 22. front gusset plate; 23. upper mounting bracket; 24. middle gusset plate; 241. notch; 242. right side plate; 243. front end plate; 244. left side plate; 25. rear gusset plate; 26. card slot; 27. first longitudinal beam joint; 28. second longitudinal beam joint; 29. lower mounting bracket; 3. floor. Detailed implementation manners

[0029] The following further describes the detailed implementation manners of the present invention with reference to the accompanying drawings. It should be noted here that the description of these implementation manners is for helping to understand the present invention, but does not limit the present invention.

[0030] Embodiment 1

[0031] As Figures 1-3 shown, a front suspension torsion bar spring arrangement structure of the present invention, the front suspension adopts a double-wishbone type torsion bar spring independent suspension, including a front suspension torsion bar spring 1 and a longitudinal beam 2 on the same side as the front suspension torsion bar spring 1. The rod body main body of the front suspension torsion bar spring 1 is arranged inside the longitudinal beam 2, hiding the torsion bar spring of the suspension system, protecting the front suspension torsion bar spring 1, and playing roles such as beauty, space saving, wind prevention, dust prevention, waterproof, anti-corrosion, and external force damage prevention.

[0032] Optionally, the front end top surface of the longitudinal beam 2 is low and in a stepped shape, and the front end top space is used to arrange the front end of the front suspension torsion bar spring 1; the inner side surface of the middle part of the longitudinal beam 2 gradually inclines outward, so that the tail end of the front suspension torsion bar spring 1 penetrates and extends out.

[0033] As Figure 4As shown, since the rod body of the front suspension torsion bar spring 1 is arranged in the vehicle's front-rear direction, i.e., the X direction, the front end is fixedly connected to the upper cross arm, and the tail end is fixedly connected to the vehicle frame. In order to be able to hide the rod body inside the longitudinal beam 2, in the height direction, i.e., the vehicle's Z direction: the top surface of the front end of the longitudinal beam 2 is designed to be lower, forming a stepped shape, so that the front end of the front suspension torsion bar spring 1 is arranged on the top of the front end surface of the longitudinal beam 2, and the height is lower than the maximum height surface of the hidden section behind the longitudinal beam 2; in the vehicle's left-right direction, i.e., the Y direction: the rod body of the front suspension torsion bar spring 1 is located between the two side walls of the longitudinal beam 2. The best way is that the section of the longitudinal beam 2 corresponding to the rod body of the front suspension torsion bar spring 1 is arranged in a straight line along the X direction of the vehicle. In addition, the tail end of the front suspension torsion bar spring 1 requires space to arrange the anti-torsion structure, so it generally extends out of the longitudinal beam 2 for fixation. The inner side surface of the part of the longitudinal beam 2 corresponding to the tail end of the front suspension torsion bar spring 1 inclines towards the outside of the vehicle body. Here, the outside refers to the side away from the vehicle body relative to the longitudinal beam 2 when looking down from the height direction. In this way, the tail end of the front suspension torsion bar spring 1 can penetrate the inner side wall of the longitudinal beam 2 and extend to the inside of the longitudinal beam 2 for fixation, realizing the hiding of the rod body of the front suspension torsion bar spring 1.

[0034] As Figure 5 and Figure 6 shown, a longitudinal beam assembly of the present invention based on the above front suspension torsion bar spring arrangement structure, the longitudinal beam 2 has a double-layer structure, including a longitudinal beam body 21 at the bottom and a front sealing plate 22 and a middle sealing plate 24 arranged on the top surface of the longitudinal beam body 21. The middle sealing plate 24 includes a U-shaped groove-like main body. The top surface height of the front sealing plate 22 is lower than that of the middle sealing plate 24. The inner side surface of the tail end of the middle sealing plate 24 inclines towards the outside, and a notch 241 is provided on the inner side surface of the tail end.

[0035] Optionally, as Figure 4 shown, the longitudinal beam body 21 is arranged in a straight line along the Y direction of the vehicle in front of the notch 241, and from the notch 241 to the tail end, it is gradually inclined towards the outside. The groove-like main body structure of the middle sealing plate 24 is also arranged along the Y direction of the vehicle.

[0036] Optionally, as Figure 7 shown, the longitudinal beam body 21 is of a U-shaped stamping part structure, and other parts are welded to the longitudinal beam body 21 by spot welding, and an energy absorption structure such as an induction groove 211 is designed at its front end;

[0037] Optionally, the front sealing plate 22 is of a U-shaped stamping part structure, and is connected to the front end of the longitudinal beam body 21 by spot welding technology to form a closed cavity structure to strengthen the longitudinal beam body 21, and a liquid leakage groove and mounting points are designed on it. The liquid leakage groove is used for discharging the electrocoating electrophoresis liquid.

[0038] Optionally, as Figure 7 and Figure 8As shown, the middle sealing plate 24 is U-shaped and welded with the longitudinal beam body 21 and the floor 3 to form a closed cavity, hiding the front suspension torsion bar spring 1, and playing the role of aesthetics, space saving, windproof, dustproof, waterproof, corrosion-resistant, and anti-external force damage. Figure 9 As shown, the middle sealing plate 24 is an assembly part, which consists of three parts: a left side plate 244, a right side plate 242 and a front end plate 243, which are assembled by spot welding. The left side plate 244 and the right side plate 242 are L-shaped and are welded together to form a U-shaped groove-shaped main structure of the middle sealing plate 24. The front end plate 243 is welded to the front end of the middle sealing plate 24, and has the same or similar height and structure as the front sealing plate 22. It is welded to the opening of the longitudinal beam body 21 to provide sufficient space for the installation of the front overhang.

[0039] Optionally, an upper mounting frame 23 is provided between the front sealing plate 22 and the front end plate 243 for mounting the front suspension upper cross arm and the front end of the front suspension torsion bar spring 1. Figure 9 and Figure 10 As shown, the upper mounting frame 23 is a welded assembly consisting of three parts welded together and is welded to the longitudinal beam body 21 and the front sealing plate 22 by shielded welding.

[0040] Optionally, a rear sealing plate 25 is further provided on the top surface of the longitudinal beam body 21. The rear sealing plate 25 is provided at the rear of the middle sealing plate 24 and is an integral stamped U-shaped beam welded with the longitudinal beam body 21 and the floor 3 to form a closed cavity. The overall shape of the rear sealing plate 25 is the same as that of the longitudinal beam body 21 at the corresponding position, and is gradually inclined outward in a horizontal plane or viewed from top to bottom.

[0041] Optional, such as Figure 11 As shown, the longitudinal beam 2 is provided with a slot 26 at the end position corresponding to the front suspension torsion bar spring 1. Figure 10 As shown, the card slot 26 is an integral stamping structure, which is welded with the longitudinal beam body 21, the rear cover plate 25, the floor 3, and the cross beam, connects the longitudinal beam 2 and the cross beam, and serves as a torsion arm mounting point of the front suspension torsion bar spring 1.

[0042] Optionally, the inner side wall of the longitudinal beam 2 is also provided with a first longitudinal beam joint 27, a second longitudinal beam joint 28 and a lower mounting frame 29 for connecting the cross beam. The first longitudinal beam joint 27 and the second longitudinal beam joint 28 are both integral stamping structures, which are welded and fixed to the longitudinal beam body 21 and the side of the middle sealing plate 24, and are used to connect the longitudinal beam 2 and the cross beam. Figure 12 As shown, the first longitudinal beam joint 27 is located at the notch 241, close to the point where the front suspension torsion bar spring 1 passes through the longitudinal beam 2. The lower mounting frame 29 is a welded assembly, which is connected to the longitudinal beam body 21 by spot welding to provide a mounting point for the front suspension lower cross arm.

[0043] In use, the front end of the front suspension torsion bar spring 1 is mounted on the upper mounting bracket 23, and the mounting point is located directly in front of the groove cavity of the middle sealing plate 24, so that the rod body of the front suspension torsion bar spring 1 extends into the groove cavity of the middle sealing plate 24 and passes out through the notch 241 at the tail end of the middle sealing plate 24 and is fixed on the card slot 26 structure.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the scope of its protection. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that after reading the present invention, various changes, modifications or equivalent replacements can still be made to the specific embodiments of the invention, but these changes, modifications or equivalent replacements are all within the scope of protection of the claims pending for the invention.

Claims

1. A longitudinal beam assembly based on the front suspension torsion bar spring arrangement structure, characterized in that the front suspension adopts a double-wishbone torsion bar spring independent suspension. The front suspension torsion bar spring arrangement structure includes a front suspension torsion bar spring (1) and a longitudinal beam (2) on the same side as the front suspension torsion bar spring (1). The main body of the rod of the front suspension torsion bar spring (1) is arranged inside the longitudinal beam (2); the top surface of the front end of the longitudinal beam (2) is low and in a stepped shape. The space at the top of the front end is used to arrange the front end of the front suspension torsion bar spring (1). The inner side surface of the middle part of the longitudinal beam (2) gradually inclines outward, so that the tail end of the front suspension torsion bar spring (1) penetrates and extends out; the longitudinal beam assembly is of a double-layer structure, including a longitudinal beam body (21) at the bottom and a front sealing plate (22) and a middle sealing plate (24) arranged on the top surface of the longitudinal beam body (21). The middle sealing plate (24) includes a U-shaped groove-shaped main body. The top surface height of the front sealing plate (22) is lower than that of the middle sealing plate (24) to form a stepped shape at the front end of the longitudinal beam (2). The inner side surface of the tail end of the middle sealing plate (24) inclines outward, and a notch (241) is arranged on the inner side surface of the tail end; the front end of the front suspension torsion bar spring (1) is installed directly in front of the groove cavity of the middle sealing plate (24). The main body of the rod of the front suspension torsion bar spring (1) extends into the groove cavity of the middle sealing plate (24) and passes out at the notch (241) at the tail end of the middle sealing plate (24), hiding the main body of the rod of the front suspension torsion bar spring (1) through the middle sealing plate (24).

2. The longitudinal beam assembly according to claim 1, characterized in that, The longitudinal beam body (21) and the middle sealing plate (24) are arranged in a straight line along the vehicle Y direction in front of the notch (241) and are gradually inclined outward from the notch (241) to the tail end.

3. The longitudinal beam assembly according to claim 1, characterized in that, The middle sealing plate (24) includes a left side plate (244), a right side plate (242) and a front end plate (243). Both the left side plate (244) and the right side plate (242) are in a similar L shape and are welded to form a U-shaped groove-shaped main body. The front end plate (243) is arranged at the front end of the groove-shaped main body and has the same height as the front sealing plate (22).

4. A longitudinal beam assembly according to claim 3, characterized in that, An upper mounting bracket (23) is arranged between the front sealing plate (22) and the front end plate (243). The upper mounting bracket (23) is used to connect the front upper cross arm and the front end of the front suspension torsion bar spring (1), so that the mounting point of the front suspension torsion bar spring (1) is directly opposite to the groove cavity of the middle sealing plate (24) along the vehicle Y direction.

5. A longitudinal beam assembly according to claim 1, characterized in that, A lower mounting bracket (29) is arranged on the inner side surface of the longitudinal beam body (21). The lower mounting bracket (29) is used to connect the front lower cross arm.

6. A longitudinal beam assembly according to claim 1, characterized in that, The longitudinal beam body (21) is in a U-shaped groove shape and an induction groove (211) is arranged at the front end.

7. A longitudinal beam assembly according to claim 1, characterized in that, A rear sealing plate (25) is further arranged on the top surface of the longitudinal beam body (21). The rear sealing plate (25) is connected to the middle sealing plate (24) to seal the top surface of the longitudinal beam body (21).

8. A longitudinal beam assembly according to claim 7, characterized in that, The rear sealing plate (25) is gradually inclined outward.

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