JPH0444508U

JPH0444508U -

Info

Publication number: JPH0444508U
Application number: JP8690590U
Authority: JP
Priority date: 1990-08-20
Filing date: 1990-08-20
Publication date: 1992-04-15

Description

[Brief explanation of the drawing]

第１図は本考案の実施例に係るアクチユエータ
の要部断面図、第２図は従来例に係るアクチユエ
ータの断面図である。１……ボデイ、２……シリンダ、３……ピスト
ン、４……ロツド、５，６……プレート、７……
スリーブ、８……凹部、９……ロツク用シリンダ
、１０……ロツク用ピストン、１１……スプリン
グ、１２……テーパ孔、１３……鋼球、１４……
係合段部、１５……傾斜案内面、１６……空気抜
き孔、１７……連通孔、１８……ストツパ段部。 FIG. 1 is a sectional view of essential parts of an actuator according to an embodiment of the present invention, and FIG. 2 is a sectional view of an actuator according to a conventional example. 1...Body, 2...Cylinder, 3...Piston, 4...Rod, 5, 6...Plate, 7...
Sleeve, 8... recess, 9... locking cylinder, 10... locking piston, 11... spring, 12... tapered hole, 13... steel ball, 14...
Engagement step portion, 15... Inclined guide surface, 16... Air vent hole, 17... Communication hole, 18... Stopper step portion.

Claims

[Claims for Utility Model Registration] 1. A body 1 having cylinders 2, 2 installed therein;
a piston 3 reciprocating within the cylinders 2, 2;
3, the piston 3 is inserted through the body 1;
, 3 connected to the rods 4, 4 and the body 1
a plate 5 arranged externally of the cylinder 2, connected to the ends of the rods 4, 4;
In this actuator, the body 1 and the plate 5 are moved relative to each other by supplying and discharging pressure to the body 1, and the plate 5 is provided with a recess 8 into which the sleeve 7 is inserted and withdrawn freely. , a locking cylinder 9 is provided inside the sleeve 7 and communicates with the cylinders 2, 2;
A locking piston 10 is attached to the locking cylinder 9.
is inserted, and the locking piston 10 is moved forward toward the distal end of the sleeve 7 by the elastic force of the spring 11, and the locking cylinder 9
A required number of tapered holes 12 are provided on the outer periphery of the tip of the sleeve 7, a steel ball 13 is inserted into each of the tapered holes 12, and the steel ball 13 is inserted into the locking hole. piston 10
When the locking piston 10 moves forward, it is pressed by the locking piston 10 to project outward from the tapered hole 12, and when the locking piston 10 moves backward, it can be freely retracted into the tapered hole 12, and the recess 8 An actuator characterized in that an engaging stepped portion 14 is provided on an inner wall of the actuator to engage the steel ball 13 and prevent the sleeve 7 from coming off. 2. The actuator according to item 1, characterized in that a stopper step 18 is provided on the outer circumferential surface of the sleeve 7 and comes into contact with the opening periphery of the recess 8.