JPH0423870U

JPH0423870U -

Info

Publication number: JPH0423870U
Application number: JP6557690U
Authority: JP
Priority date: 1990-06-21
Filing date: 1990-06-21
Publication date: 1992-02-26

Description

[Brief explanation of the drawing]

面図第１〜３図はこの実施例を示すもので、第
１図は断面図、第２図は第１図の矢示部のかし
め態様を示す要部拡大図、第３図は第１図の凸部
であつて第２図とは別のかしめ態様を示す要部拡
大図、第４，５図は従来機構を示すもので、第４
図はパワーシリンダの断面図、第５図は第４図の
要部拡大図である。１……シリンダ体、２，１２……ピストン、２
ａ，１２ａ……軸孔、３，４……ピストンロツド
、７，１３……凸部、６ａ，１３ｂ……段部、８
……第１リング溝、１１……第１スナツプリング
部材、１５……第２リング溝、１６……第２スナ
ツプリング部材。 1 to 3 show this embodiment; FIG. 1 is a sectional view, FIG. An enlarged view of the main part of the convex part in the figure showing a different caulking mode from that shown in Figure 2. Figures 4 and 5 show the conventional mechanism;
The figure is a sectional view of the power cylinder, and FIG. 5 is an enlarged view of the main part of FIG. 4. 1... Cylinder body, 2, 12... Piston, 2
a, 12a...Shaft hole, 3, 4...Piston rod, 7, 13...Protrusion, 6a, 13b...Step, 8
...First ring groove, 11...First snap spring member, 15...Second ring groove, 16...Second snap spring member.

Claims

[Scope of utility model registration request]

A piston with a shaft hole formed in the cylinder body is slidably installed inside the cylinder body, and a piston rod is inserted into the shaft hole. While a convex portion is formed at the opening end, a first ring groove is provided on the outer periphery of the piston rod, a first snap spring member is attached to the first ring groove, and one side of the first snap spring member is brought into contact with the stepped portion. In addition, in the piston fixing mechanism that plastically deforms the convex portion formed on the other end of the piston to integrally connect the piston to the piston rod together with the first snap spring member, a stepped portion is formed on the inner periphery of the convex portion. On the other hand, a second ring groove is provided on the outer periphery of the piston rod, a second snap spring member is attached to the second ring groove, the convex portion is plastically deformed, and the stepped portion formed on the convex portion is inserted into the second snap spring member. The piston fixing mechanism has a structure in which the piston and the piston rod are integrally connected by pressing the two stepped portions formed at both ends of the piston in pressure contact with the first and second snap spring members.