Riveting fixing sleeve structure for intermediate shaft of vehicle steering system

Abstract

The utility model discloses a riveting fixed sleeve structure for a vehicle steering system intermediate shaft, which comprises a universal joint support and an intermediate shaft, the universal joint support comprises a support main body and a connecting column which protrudes outwards relative to the support main body, the outer wall of the connecting column is provided with a concave structure along the circumferential direction, and the concave structure is provided with a through hole. A connecting hole sleeved on the connecting column is formed in the end part of the middle shaft; and an inner convex structure matched with the concave structure is formed on the hole wall of the connecting hole in a riveting pressing manner. The utility model has the beneficial effects that the cost is reduced and the collision collapse performance is improved while the connection strength is ensured.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a riveted fastening sleeve structure for the intermediate shaft of a vehicle steering system. Background Technology

[0002] The vehicle steering system is a core component of automotive safety and handling, and the connection method between the intermediate shaft and the universal joint directly affects the reliability of the steering system and its collision safety performance. Currently, the traditional connection method between the intermediate shaft and the universal joint mainly uses bolts. While this method offers high connection strength and reliability, it is complex to assemble, requiring precise torque control during installation, which increases production time and labor costs. Furthermore, in the event of a collision, the steering system needs a certain degree of crumple zone to absorb impact energy and reduce injury to the driver. Bolted connections, due to their high structural rigidity, struggle to achieve ideal crumple zone performance, potentially increasing the risk of injury to the driver in a collision. Utility Model Content

[0003] In view of this, the present invention provides a riveted fastening sleeve structure for the intermediate shaft of a vehicle steering system, which reduces costs and improves collision crumple performance while ensuring connection strength.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A riveted fastening structure for an intermediate shaft in a vehicle steering system, characterized in that: it includes a universal joint support and an intermediate shaft, the universal joint support includes a support body and a connecting post protruding outward relative to the support body, the outer wall of the connecting post is provided with a recessed structure along the circumference, the end of the intermediate shaft is provided with a connecting hole fitted on the connecting post, and the wall of the connecting hole is riveted with an inner convex structure that matches the recessed structure.

[0006] The above structure uses a riveting process to mechanically interlock the intermediate shaft and the connecting column, resulting in high connection strength. It eliminates the need for other connecting parts, reducing costs and facilitating connection. Furthermore, in the event of a vehicle collision, the riveted connection structure can achieve controlled crumple, absorbing impact energy and improving safety.

[0007] Preferably, the end of the connecting hole is interference-fitted onto the connecting post. This structure further improves the connection strength.

[0008] Preferably, the circumferential side of the connecting column includes two symmetrical anti-rotation planes and two symmetrical arc surfaces. This structure prevents relative rotation between the universal joint support and the intermediate shaft, optimizes stress distribution, and improves connection strength.

[0009] Preferably, the recessed structure is an annular groove, the inner convex structure is an annular protrusion adapted to the annular groove, and the outer wall of the intermediate shaft, corresponding to the annular protrusion, is an annular recessed structure. Using this structure, the force is evenly distributed, and the connection is firm.

[0010] Preferably, the recessed structure includes four recesses distributed on the four sides of the connecting column, and the inner convex structure consists of four point-like protrusions adapted to the four recesses. The position of the point-like protrusions on the outer wall of the intermediate shaft is a point-like recessed structure. Using the above structure, multi-point fixing and stable connection are achieved.

[0011] Preferably, after the intermediate shaft is fixed onto the connecting column, there is a gap between its end face and the support body. This structure ensures connection strength while providing superior collapse resistance.

[0012] Preferably, the four sides of the outer end of the connecting post are provided with beveled surfaces for the connecting end. With the above structure, the beveled surfaces can guide the intermediate shaft to be smoothly inserted into the connecting post, facilitating the connection.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. A fixed connection is formed through riveting. The recessed structure on the connecting post and the protruding structure on the connecting hole cooperate to form a mechanical interlock, significantly improving the strength and reliability of the connection. At the same time, this connection method eliminates the need for additional fasteners, simplifying the assembly process and reducing costs.

[0015] 2. It has good crumple zone performance, enabling it to avoid collisions in a timely manner, effectively absorb impact energy, and reduce injury to the driver. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0017] Figure 2 This is a schematic diagram of one side of universal joint support 1;

[0018] Figure 3 This is a schematic diagram of the other side of the universal joint support 1;

[0019] Figure 4 To show the cross-sectional view of the annular groove 12a1;

[0020] Figure 5 A cross-sectional view showing the gap between the support body 11 and the intermediate shaft 2;

[0021] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0022] Figure 7To show the cross-sectional view of pit 12a2;

[0023] Figure 8 A schematic diagram illustrating the dotted protrusions 21a2;

[0024] Figure 9 A schematic diagram illustrating the annular protrusion 21a1. Detailed Implementation

[0025] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0026] like Figure 1 , Figure 2 and Figure 5 As shown, a riveted fastening structure for the intermediate shaft of a vehicle steering system includes a universal joint support 1 and an intermediate shaft 2. The universal joint support 1 includes a support body 11 and a connecting post 12 protruding outwards from the support body 11. The outer wall of the connecting post 12 has a circumferential recessed structure 12a. The end of the intermediate shaft 2 has a connecting hole 21 fitted onto the connecting post 12. The end of the connecting hole 21 is interference-fitted onto the connecting post 12, and its hole wall has a riveted inner convex structure 21a matching the recessed structure 12a. The recessed structure 12a on the connecting post 12 and the inner convex structure 21a on the connecting hole 21 cooperate to form a mechanical interlock. This connection method significantly improves the strength and reliability of the connection. Simultaneously, this connection method eliminates the need for additional fasteners, simplifying the assembly process and reducing costs. Furthermore, this solution achieves an ideal crumple zone effect, enabling timely avoidance of collisions, effectively absorbing impact energy, and reducing injury to the driver.

[0027] like Figure 2 and Figure 3 As shown, the circumferential sides of the connecting column 12 include two symmetrical anti-rotation planes 12b and two symmetrical arc surfaces 12c. The anti-rotation planes 12b prevent relative rotation between the intermediate shaft 2 and the connecting column 12, while the arc surfaces 12c optimize stress distribution and improve connection strength. Figure 5 As can be seen, after the intermediate shaft 2 is fixedly sleeved on the connecting column 12, a gap is left between its end face and the support body 11 to improve the impact crushing performance. The four sides of the outer end of the connecting column 12 are provided with inclined surfaces 12d. The inclined surfaces 12d can guide the connecting hole 21 to be smoothly inserted into the connecting column 12, reduce assembly resistance, and improve assembly efficiency.

[0028] During assembly, the connecting column 12 is provided with a recessed structure 12a, and the connecting hole 21 at the end of the intermediate shaft 2 is a cylindrical structure. After the connecting hole 21 is fitted onto the connecting column 12, the inner convex structure 21a is formed on the hole wall of the connecting hole 21 by riveting process, so as to fix the intermediate shaft 2 and the connecting column 12. This assembly method has the advantages of low cost and high efficiency.

[0029] Example 1

[0030] like Figure 1 , Figure 4 and Figure 9 As shown, the recessed structure 12a is an annular groove 12a1, and the wall of the connecting hole 21 is riveted to form an annular protrusion 21a1 that matches the annular groove 12a1. The outer wall of the intermediate shaft 2 is an annular recessed structure 2a corresponding to the annular protrusion 21a1. This connection method has high connection strength and uniform force distribution.

[0031] Example 2

[0032] like Figure 6 , Figure 7 and Figure 8 As shown, the difference between this embodiment and Embodiment 1 is that the recessed structure 12a includes four recesses 12a2 distributed on the four sides of the connecting post 12, instead of an annular groove 12a1. The connecting hole 21 has dot-shaped protrusions 21a2 riveted to match the recesses 12a2, forming a multi-point fixed connection. The outer wall of the intermediate shaft 2, corresponding to the dot-shaped protrusions 21a2, is a dot-shaped recessed structure 2b. This design further improves the stability and torsional resistance of the connection.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A riveted retaining sleeve structure for an intermediate shaft in a vehicle steering system, characterized in that: The device includes a universal joint support (1) and an intermediate shaft (2). The universal joint support (1) includes a support body (11) and a connecting post (12) protruding outward relative to the support body (11). The outer wall of the connecting post (12) is provided with a recessed structure (12a) along the circumferential direction. The end of the intermediate shaft (2) is provided with a connecting hole (21) fitted on the connecting post (12). The wall of the connecting hole (21) is riveted with an inner convex structure (21a) that matches the recessed structure (12a).

2. The riveted fastening sleeve structure for the intermediate shaft of a vehicle steering system according to claim 1, characterized in that: The end of the connecting hole (21) is interference-fitted onto the connecting post (12).

3. The riveted sleeve structure for the intermediate shaft of a vehicle steering system according to claim 1, characterized in that: The circumferential side of the connecting column (12) includes two symmetrical anti-rotation planes (12b) and two symmetrical arc surfaces (12c).

4. The riveted fastening sleeve structure for the intermediate shaft of a vehicle steering system according to claim 1, characterized in that: The recessed structure (12a) is an annular groove (12a1), the inner convex structure (21a) is an annular protrusion (21a1) adapted to the annular groove (12a1), and the position of the outer wall of the intermediate shaft (2) corresponding to the annular protrusion (21a1) is an annular recessed structure (2a).

5. A riveted retaining sleeve structure for an intermediate shaft of a vehicle steering system according to claim 3, characterized in that: The recessed structure (12a) includes four recesses (12a2) distributed on the four sides of the connecting column (12), and the inner convex structure (21a) is four dot-shaped protrusions (21a2) adapted to the four recesses (12a2). The position of the outer wall of the intermediate shaft (2) corresponding to the dot-shaped protrusions (21a2) is a dot-shaped recessed structure (2b).

6. A riveted retaining sleeve structure for an intermediate shaft of a vehicle steering system according to claim 1, characterized in that: After the intermediate shaft (2) is fixedly sleeved on the connecting column (12), there is a gap between its end face and the support body (11).

7. A riveted retaining sleeve structure for an intermediate shaft of a vehicle steering system according to claim 3, characterized in that: The four sides of the outer end of the connecting column (12) are provided with inclined surfaces (12d) for the connecting end.

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