JPS6227255U

JPS6227255U -

Info

Publication number: JPS6227255U
Application number: JP11948685U
Authority: JP
Priority date: 1985-08-03
Filing date: 1985-08-03
Publication date: 1987-02-19

Description

[Brief explanation of the drawing]

図は本考案の一実施例を示すもので、第１図は
最短縮状態のシリンダ装置を示す断面正面図、第
２図は第１図の―断面図、第３図は最伸長状
態のシリンダ装置を示す一部断面正面図である。１……シリンダ装置、２……シリンダ筒、３…
…中間ロツド、４……先端ロツド、５……電動機
、５ａ……出力軸、６……駆動ねじ棒、７……フ
ランジ接手、８……中空ねじ棒、９……フランジ
付ナツト、１０……軸受部材、１０ａ……ベアリ
ング、１１……鋼球、１２……案内レール、１３
……フランジ付ナツト、１４……ダストシール、
１６，１８，１９，２０……近接スイツチ、１７
，２２……鉄片。 The figures show one embodiment of the present invention, in which Fig. 1 is a cross-sectional front view showing the cylinder device in the most contracted state, Fig. 2 is a cross-sectional view of the cylinder device in Fig. 1, and Fig. 3 is the cylinder device in the most extended state. FIG. 2 is a partially sectional front view showing the device. 1... Cylinder device, 2... Cylinder tube, 3...
...Intermediate rod, 4...Tip rod, 5...Electric motor, 5a...Output shaft, 6...Drive threaded rod, 7...Flanged joint, 8...Hollow threaded rod, 9...Flanged nut, 10... ... Bearing member, 10a... Bearing, 11... Steel ball, 12... Guide rail, 13
... Nut with flange, 14 ... Dust seal,
16, 18, 19, 20... Proximity switch, 17
, 22... Iron piece.

Claims

[Scope of utility model registration request]

It has a cylinder cylinder equipped with an electric motor at the base end, a tubular intermediate rod fitted into the cylinder cylinder so as to be removable from the distal end, and a tip rod fitted into the intermediate rod so as to be removable from the distal end. In a screw type two-stage cylinder device that is inserted into the center of the cylinder cylinder and is driven to expand and contract by the rotation of a threaded rod driven by the electric motor, a hollow tip rod is engaged with an inner circumferential surface of an intermediate rod. The intermediate rod is engaged with the inner peripheral surface of the cylinder to restrict rotation and is inserted so as to be movable in the axial direction.A male thread is formed on the outer periphery and a female thread is formed on the proximal end. A hollow threaded rod having a hollow threaded portion and a driving threaded rod that is screwed into the female threaded portion of the hollow threaded rod and inserted into the hollow threaded rod, and the proximal end of the driving threaded rod is connected to the output shaft of the electric motor. The intermediate rod is connected and arranged in the axial direction at the center of the cylinder, an annular bearing is provided at the base end of the intermediate rod, and the base end of the hollow threaded rod having a female thread formed on the inner periphery of the bearing part is rotated. possible and locked for axial movement,
A screw type two-stage cylinder device, characterized in that a female threaded portion is provided on the base end side of the tip rod, and the male thread of the hollow threaded rod is screwed into the female threaded portion.