A torsion beam capable of self-adapting correction of screw perpendicularity

Abstract

This invention discloses a torsion beam with adaptive correction for screw perpendicularity, comprising: a wheel mounting plate having a wheel mounting surface and a first mounting hole; a hub mounting seat fitted to the wheel mounting surface, the hub mounting seat having a second mounting hole corresponding to the first mounting hole; a screw inserted through the first mounting hole and the second mounting hole, the diameter of the screw being smaller than the first mounting hole and the second mounting hole; the screw being equipped with a first stop and a second stop, the first stop having a first stop surface and the second stop having a second stop surface, the first stop surface abutting against the wheel mounting plate, and the second stop surface abutting against the hub mounting seat, at least one of the first stop surface and the second stop surface being a spherical surface. In the above solution, the screw can adaptively adjust its oscillation, reducing the possibility of screw damage and ensuring connection reliability.

Description

Technical Field

[0001] This invention relates to the field of vehicle parts technology, and more specifically to a torsion beam that can adaptively correct the verticality of a screw. Background Technology

[0002] The torsion beam, as the rear suspension of the chassis, connects the vehicle body and tires, serves as a guide, and can withstand the forces and torques of elastic elements, shock absorbers, and buffer blocks.

[0003] In automotive theory, the most critical dimensions for a torsion beam are the toe angle and camber angle. The torsion beam includes a wheel mount plate, which connects to the wheel mount. The angle of the wheel mounting surface on the wheel mount plate directly determines the toe angle and camber angle. Generally, the wheel mount plate and wheel mount are connected by bolts and nuts; therefore, the wheel mount plate needs to be designed with mounting holes (through holes or threaded holes) and wheel mounting surfaces.

[0004] In the manufacturing process of a torsion beam, a typical procedure is as follows: first, the wheel mounting surface and mounting holes of the wheel mounting plate are machined, with the wheel mounting surface perpendicular to the mounting holes; then, the wheel mounting plate and related components of the torsion beam are welded together. Because welding deformation is unavoidable during the welding process, the wheel mounting surface of the wheel mounting plate needs to be machined again after welding to meet the high-precision requirements for toe-in and camber angles.

[0005] However, after secondary processing, the mounting hole and the wheel mounting surface are often not perpendicular. As a result, during the subsequent tightening of the bolts, the bolt thread and the inner wall of the mounting hole are prone to interference, which may cause the bolt to be unable to be screwed in, or the bolt and nut to be difficult to tighten. In severe cases, it may even cause the bolt to deform or break.

[0006] Therefore, how to provide a solution to overcome or alleviate the above-mentioned defects remains a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0007] The purpose of this invention is to provide a torsion beam that can adaptively correct the verticality of a screw. In this torsion beam, the screw can be adaptively adjusted to swing, which can reduce the possibility of screw damage and help ensure the reliability of the connection.

[0008] To solve the above-mentioned technical problems, the present invention provides a torsion beam with adaptive correction of screw perpendicularity, comprising: a wheel mounting plate having a wheel mounting surface and a first mounting hole; a hub mounting seat fitted to the wheel mounting surface, the hub mounting seat having a second mounting hole corresponding to the first mounting hole; a screw inserted through the first mounting hole and the second mounting hole, the diameter of the screw being smaller than the first mounting hole and the second mounting hole, the screw being configured with a first stop and a second stop, the first stop having a first stop surface and the second stop having a second stop surface, the first stop surface abutting against the wheel mounting plate, the second stop surface abutting against the hub mounting seat, and at least one of the first stop surface and the second stop surface being a spherical surface.

[0009] In the above solution, at least one of the first and second stop surfaces is a spherical surface. This spherical design allows the screw, equipped with the first and second stop components, to oscillate relative to its own axis. Furthermore, the screw's diameter is smaller than the diameters of the first and second mounting holes, providing space for the screw's oscillation adjustment and reducing the possibility of interference between the screw and the inner walls of the first and second mounting holes. Thus, during screw installation, the oscillation adjustment generated by the spherical design corrects the screw's perpendicularity to the wheel mounting surface, thereby improving the smoothness and reliability of screw installation and largely avoiding screw deformation and breakage issues mentioned in the background art.

[0010] Meanwhile, the implementation of the above scheme also optimizes the process of first processing the wheel mounting plate and then welding the wheel mounting plate and related parts of the torsion beam to process the torsion beam. This is conducive to the promotion of the process, which is relatively simple, has low equipment investment, low machining cost, and high production cycle, and can reduce the cost of the whole vehicle.

[0011] Optionally, one of the first stop and the second stop is integral with the screw to form a bolt, and the other of the first stop and the second stop is a nut.

[0012] Optionally, both the first stop and the second stop are nuts.

[0013] Optionally, one of the first stop surface and the second stop surface is a plane and the other is a sphere.

[0014] Optionally, the first stop surface is a sphere, and the second stop surface is a plane.

[0015] Optionally, the section of the first mounting hole away from the hub mounting seat is a spherical hole section, the inner wall surface of the spherical hole section is spherical, and the first stop surface and the inner wall surface of the spherical hole section are in contact.

[0016] Optionally, it also includes a crossbeam and a trailing arm, the trailing arm being located on both sides of the crossbeam, and the wheel mounting plate being connected to one end of the trailing arm.

[0017] Optionally, it also includes a bushing disposed at the other end of the longitudinal arm.

[0018] Optionally, a shock absorber mounting bracket may also be included.

[0019] Optionally, a spring mounting plate may also be included. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a specific embodiment of the torsion beam that can adaptively correct the verticality of the screw provided by the present invention;

[0021] Figure 2 for Figure 1 Cross-sectional view in the AA direction.

[0022] The annotations in the attached figures are explained as follows:

[0023] 1 Wheel mounting plate, 11 Wheel mounting surface, 12 First mounting hole, 121 Spherical hole segment, 13 Wheel mounting back side;

[0024] 2 hub mounting brackets, 21 second mounting holes;

[0025] 3 screw, 31 first stop, 311 first stop surface, 32 second stop, 321 second stop surface;

[0026] 4 crossbeams;

[0027] 5 longitudinal arms;

[0028] 6. Bushing;

[0029] 7. Vibration damper mounting bracket;

[0030] 8. Spring mounting plate. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] In the description of the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0033] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, "linking" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0034] In the description of embodiments of the present invention, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0035] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of a specific embodiment of the torsion beam with adaptive correction of screw perpendicularity provided by the present invention. Figure 2 for Figure 1 Cross-sectional view in the AA direction.

[0036] like Figure 1 and Figure 2 As shown, the present invention provides a torsion beam that can adaptively correct the verticality of the screw, including a wheel mounting plate 1, a wheel hub mounting seat 2, and a screw 3.

[0037] The wheel mounting plate 1 has a wheel mounting surface 11, a first mounting hole 12, and a wheel mounting back surface 13. During initial machining, the wheel mounting surface 11 and the wheel mounting back surface 13 are parallel, and both are perpendicular to the central axis of the first mounting hole 12.

[0038] However, after the wheel mounting plate 1 and related components of the torsion beam are welded, the wheel mounting surface 11 needs to undergo secondary processing due to welding stress and deformation to meet the dimensional requirements of parameters such as toe angle and camber angle. This may cause the wheel mounting surface 11 and the wheel mounting back surface 13 to be non-parallel, resulting in the wheel mounting surface 11 and the central axis of the first mounting hole 12 not being perpendicular. In this embodiment of the invention, the included angle between the wheel mounting surface 11 and the wheel mounting back surface 13 can be denoted as α.

[0039] The wheel hub mounting seat 2 is fitted to the wheel mounting surface 11. The wheel hub mounting seat 2 has a second mounting hole 21, which corresponds to the first mounting hole 12.

[0040] The screw 3 passes through the first mounting hole 12 and the second mounting hole 21. The diameter of the screw 3 is smaller than the diameter d1 of the first mounting hole 12 and the diameter d2 of the second mounting hole 21. The specific dimensional difference can be adjusted according to actual needs and is not explicitly limited here. The screw 3 is equipped with a first stop 31 and a second stop 32. The first stop 31 has a first stop surface 311, and the second stop 32 has a second stop surface 321. The first stop surface 311 abuts against the wheel mounting plate 1, and the second stop surface 321 abuts against the wheel hub mounting seat 2, thereby fixing the wheel hub mounting seat 2 and the wheel mounting plate 1 together. At least one of the first stop surface 311 and the second stop surface 321 is a spherical surface.

[0041] In the above scheme, at least one of the first stop surface 311 and the second stop surface 321 is a spherical surface. This spherical design allows the screw 3, equipped with the first stop surface 31 and the second stop surface 32, to swing relative to its own axis. Furthermore, the diameter of the screw 3 is smaller than the diameter d1 of the first mounting hole 12 and the diameter d2 of the second mounting hole 21, providing space for the swing adjustment of the screw 3 and reducing the possibility of interference between the screw 3 and the inner walls of the first mounting hole 12 and the second mounting hole 21. Thus, during the installation of the screw 3, the swing adjustment generated by the spherical design can correct the perpendicularity of the screw 3 relative to the wheel mounting surface 11, thereby improving the smoothness and reliability of the screw 3 installation and largely avoiding the screw 3 deformation and breakage faults mentioned in the background art.

[0042] Meanwhile, the implementation of the above scheme also optimizes the process of first processing the wheel mounting plate 1 and then welding the wheel mounting plate 1 and related parts of the torsion beam to process the torsion beam. This is conducive to the promotion of the process, which is relatively simple, has low equipment investment, low machining cost, and high production cycle, and can reduce the cost of the whole vehicle.

[0043] After assembly, the central axis of the screw 3 and the central axis of the first mounting hole 12 can be set at an angle, which can be denoted as β, where β = α.

[0044] It should be noted that the aforementioned screw 3 refers to a rod with threads on its outer wall surface. The threads can be distributed in a local area of ​​the rod's axial and circumferential directions, or they can be distributed in the entire area of ​​the rod's axial and circumferential directions. The specific distribution needs to be determined based on the actual situation.

[0045] Combination Figure 2In the embodiment shown in the accompanying drawings, the second stop 32 and the screw can be an integral structure. Thus, the second stop 32 and the screw 3 can be combined to form a bolt, with the second stop 32 acting as the head of the bolt, and the first stop 31 acting as a nut, which can be threadedly connected to the screw 3.

[0046] As a variation of the above embodiment, the first stop 31 and the screw 3 can be an integral structure, and the second stop 32 can be a nut. Alternatively, as another variation of the above embodiment, both the first stop 31 and the second stop 32 can be nuts, in which case the screw 3 can be a stud or the like.

[0047] Of the first stop surface 311 and the second stop surface 321, only one can be a spherical surface to provide the function of swing adjustment of the screw 3, while the other can be a plane. In this way, the connection reliability of the screw 3 is higher.

[0048] For example, such as Figure 2 As shown, the first stop surface 311 can be spherical, and the second stop surface 321 can be planar. During assembly, the spherical first stop surface 311 can provide a swing adjustment function, while the planar second stop surface 321 can fit against the hub mounting seat 2 to improve the reliability of the connection. Furthermore, in this embodiment, the section of the first mounting hole 12 facing away from the hub mounting seat 2 can be a spherical hole section 121, and the inner wall surface of the spherical hole section 121 can be spherical. The first stop surface 311 and the inner wall surface of the spherical hole section 121 fit against each other. With this arrangement, the fitting first stop surface 311 and the spherical hole section 121 can form a spherical kinematic pair, which is more conducive to ensuring the smoothness of the screw 3's swing adjustment.

[0049] Please continue to refer to this. Figure 1 In this embodiment of the invention, the torsion beam may further include a crossbeam 4, a longitudinal arm 5, a bushing tube 6, a shock absorber mounting bracket 7, and a spring mounting plate 8.

[0050] The crossbeam 4 is a crucial component of the torsion beam, responsible for suppressing wheel bounce. During vehicle operation, the crossbeam 4 can torsion, and its torsional stiffness and roll stiffness must be matched to the overall vehicle performance. The trailing arm 5 forms the skeleton of the entire torsion beam, providing mounting positions for related components. The aforementioned wheel mounting plate 1 can be mounted on one end of the trailing arm 5. There are two trailing arms 5, located on opposite sides of the crossbeam 4. The bushing tube 6 is located at the other end of the trailing arm 5, used to mount bushings, which are then connected to the vehicle body. The shock absorber mounting bracket 7 is used to mount shock absorbers; the type of shock absorber is not limited here, but can include hydraulic shock absorbers. The spring mounting plate 8 is used to mount coil springs and bears their static and dynamic reciprocating forces.

[0051] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A twist beam that can self-adaptively correct the perpendicularity of a screw rod, characterized in that, include: The wheel mounting plate (1) has a wheel mounting surface (11) and a first mounting hole (12). A wheel hub mounting seat (2) is fitted to the wheel mounting surface (11). The wheel hub mounting seat (2) has a second mounting hole (21) that corresponds to the first mounting hole (12). A screw (3) is inserted into the first mounting hole (12) and the second mounting hole (21). The diameter of the screw (3) is smaller than that of the first mounting hole (12) and the second mounting hole (21). The screw (3) is equipped with a first stop (31) and a second stop (32). The first stop (31) has a first stop surface (311), and the second stop (32) has a second stop surface (321). The first stop surface (311) abuts against the wheel mounting plate (1), and the second stop surface (321) abuts against the wheel hub mounting seat (2), thereby fixing the wheel hub mounting seat (2) and the wheel mounting plate (1) together. At least one of the first stop surface (311) and the second stop surface (321) is a spherical surface. Of the first stop surface (311) and the second stop surface (321), one is a plane and the other is a sphere.

2. The torsion beam with adaptive correction for screw perpendicularity according to claim 1, characterized in that, One of the first stop (31) and the second stop (32) is integral with the screw (3) to form a bolt, and the other of the first stop (31) and the second stop (32) is a nut.

3. The torsion beam with adaptive correction for screw perpendicularity according to claim 1, characterized in that, Both the first stop (31) and the second stop (32) are nuts.

4. The torsion beam with adaptive correction for screw perpendicularity according to any one of claims 1-3, characterized in that, The first stop surface (311) is a spherical surface, and the second stop surface (321) is a plane.

5. The torsion beam with adaptive correction for screw perpendicularity according to claim 4, characterized in that, The first mounting hole (12) is a spherical hole section (121) away from the hub mounting seat (2). The inner wall surface of the spherical hole section (121) is spherical. The first stop surface (311) and the inner wall surface of the spherical hole section (121) are in contact.

6. The torsion beam with adaptive correction for screw perpendicularity according to any one of claims 1-3, characterized in that, It also includes a crossbeam (4) and a longitudinal arm (5), the longitudinal arm (5) being located on both sides of the crossbeam (4), and the wheel mounting plate (1) being connected to one end of the longitudinal arm (5).

7. The torsion beam with adaptive correction for screw perpendicularity according to claim 6, characterized in that, It also includes a bushing (6) disposed at the other end of the longitudinal arm (5).

8. The torsion beam with adaptive correction for screw perpendicularity according to claim 6, characterized in that, It also includes the shock absorber mounting bracket (7).

9. The torsion beam with adaptive correction for screw perpendicularity according to claim 6, characterized in that, It also includes a spring mounting plate (8).

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