Structure and method for connecting torsion bar with outer shaft in automobile steering system
A technology of automobile steering system and connecting structure is applied in the field of automobile steering system and the connecting structure of torsion bar and outer shaft in automobile steering system, which can solve the problems of low connection stability and easy falling off of pins, so as to achieve firm and reliable assembly, The effect of low machining accuracy and simple structure
Active Publication Date: 2012-07-04
台州永安转向器有限公司
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Problems solved by technology
In the above-mentioned patent, the torsion bar is connected with the steering screw through the bolt. In this connection method, the bolt is easy to fall off, and the connection stability is not high.
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[0038] Such as figure 1 and figure 2 As shown, one end of the torsion bar 1 in the automobile steering system is a connecting end, and the outer shaft 2 has a connecting hole 2a. In this connection structure, there is a spline 1a outside the connection end of the torsion bar 1 . The connecting hole 2a of the outer shaft 2 has a spline groove matching the spline 1a. The hardness of the torsion bar 1 is greater than that of the outer shaft 2. The spline 1a cooperates with the spline groove to make the torsion bar 1 and the outer shaft 2 interference fit.
[0039] In this embodiment, the end of the spline 1a has a tapered introduction portion 1c, and the introduction portion 1c is a chamfer of the end of the spline 1a.
[0040] The middle part of the torsion bar 1 has a columnar riveting column 1b near the spline 1a, and the port of the connecting hole 2a has a larger riveting part 2b that matches the riveting column 1b, and the riveting column 1b is pressed on the riveting T...
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The invention provides a structure and a method for connecting a torsion bar with an outer shaft in an automobile steering system, belonging to the technical field of machinery, and solving the problem that an inserted pin between a torsion bar and an outer shaft in the existing automobile steering system is easy to fall off, and the connecting stability of the torsion bar and the outer shaft is poor. In the structure for connecting the torsion bar with an outer shaft in an automobile steering system, one end of the torsion bar is a connecting end, the outer shaft is provided with a connecting hole, the connecting end of the torsion bar is provided with a spline, the connecting hole of the outer shaft is provided with a spline groove matched with the spline, the hardness of the torsion bar is greater than that of the outer shaft, and the spline is matched with the spline groove, so that the torsion bar and the outer shaft are circumferentially fixed. The structure and method disclosed by the invention have the advantages of low processing precision, firm assembling, high connecting stability, and the like.
Description
technical field [0001] The invention belongs to the technical field of machinery, and relates to an automobile steering system, in particular to a connection structure and a connection method between a torsion bar and an outer shaft in the automobile steering system. Background technique [0002] Torsion bar is one of the core parts of hydraulic steering system and electric steering system. The quality of its assembly directly affects the performance of the steering gear and the safety of the car, and it is a key control process. [0003] However, at present, the assembly of the torsion bar of the steering gear is usually fixed by spline interference press fitting, that is, the torsion bar with the spline is pressed into the light hole of the outer shaft. After the spline is pressed in, the connection in the direction of rotation is reliable. There is a possibility of loosening due to vibration and impact. Once the shaft is loosened, it may come out. If the torsion bar comes...
Claims
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IPC IPC(8): B62D5/24
Inventor 李孙建
Owner 台州永安转向器有限公司