JPH0158373U

JPH0158373U -

Info

Publication number: JPH0158373U
Application number: JP15402587U
Authority: JP
Priority date: 1987-10-09
Filing date: 1987-10-09
Publication date: 1989-04-12

Description

[Brief explanation of the drawing]

第１図ないし第７図はこの考案の一実施例を示
し、第１図は要部となる中間軸のパイプ部材と軸
部材の固定構造を示す縦断面図、第２図はそのパ
イプ部材にカシメ部を成形する方法を説明するた
めの縦断面図、第３図はその側断面図、第４図は
その成形加工に使用される治具を示す半断面図、
第５図はカシメ部が成形されたパイプ部材に軸部
材を圧入して相互を連結した状態を示す縦断面図
、第６図はその側断面図、第７図はその中間軸で
得られる固定部分の荷重特性を示す線図、第８図
は一般的な中間軸をもつ自動車のステアリング系
を示す斜視図、第９図は従来の中間軸のパイプ部
材と軸部材の固定構造を示す縦断面図、第１０図
はその側断面図、第１１図はその中間軸で得られ
る固定部分の荷重特性を示す線図である。２…ステアリングシヤフト、４…ステアリング
ギアボツクス、５，６…自在継手、７…中間軸、
１０…パイプ部材、１１…軸部材、２０…カシメ
部、２３…円柱部分（固定部）、２５…空隙部。 Figures 1 to 7 show an embodiment of this invention, with Figure 1 being a longitudinal sectional view showing the main part of the pipe member of the intermediate shaft and the fixing structure of the shaft member, and Figure 2 being the main part of the intermediate shaft pipe member and the fixing structure of the shaft member. A longitudinal sectional view for explaining the method of forming the caulked part, FIG. 3 is a side sectional view thereof, and FIG. 4 is a half sectional view showing a jig used for the forming process.
Fig. 5 is a longitudinal sectional view showing a state in which a shaft member is press-fitted into a pipe member with a caulked part and connected to each other, Fig. 6 is a side sectional view thereof, and Fig. 7 is a fixation obtained by the intermediate shaft. Figure 8 is a perspective view showing the steering system of an automobile with a general intermediate shaft; Figure 9 is a vertical cross-section showing the fixing structure of the conventional intermediate shaft pipe member and shaft member. 10 is a side sectional view thereof, and FIG. 11 is a diagram showing the load characteristics of the fixed portion obtained at the intermediate shaft. 2... Steering shaft, 4... Steering gear box, 5, 6... Universal joint, 7... Intermediate shaft,
DESCRIPTION OF SYMBOLS 10... Pipe member, 11... Shaft member, 20... Caulked part, 23... Cylindrical part (fixed part), 25... Cavity part.

Claims

[Scope of utility model registration request]

In a steering shaft structure configured by connecting the steering gear side and the tip of the steering shaft via an intermediate shaft having a universal joint at both ends, the intermediate shaft has one end connected to the one universal joint. A pipe member formed by forming a plurality of crimped parts extending inward on a peripheral wall along the axial direction, and the other universal joint are connected to one end and the other end is press-fitted into the other end of the pipe member and fixed. provided on the outer circumferential surface between a shaft member that is fixed and a fixed part of this shaft member that is fixed by at least the caulking part, and does not allow the shaft member to interfere with the caulking part when an external force in a shrinking direction that exceeds the fixing force is applied. A steering shaft structure characterized in that it is composed of a cavity for making the steering shaft.