JPH0462946U

JPH0462946U -

Info

Publication number: JPH0462946U
Application number: JP10521490U
Authority: JP
Priority date: 1990-10-08
Filing date: 1990-10-08
Publication date: 1992-05-28

Description

[Brief explanation of the drawing]

第１図は本考案の要部断面正面図、第２図は押
上げ時における従来例の正面断面図、第３図は降
下操作用電動シリンダ装置の正面図である。１……ボールねじ軸、２……摩擦板、３……ス
トツパ、５……クラツチ摩擦板、６……基端部の
ねじ部、７……逆止輪、８……クラツチ歯車、Ａ
……作動筒、Ｃ……外筒、Ｎ……ボールナツト、
Ｗ……荷重物体、Ｍ……モータ。 FIG. 1 is a sectional front view of a main part of the present invention, FIG. 2 is a front sectional view of a conventional example at the time of pushing up, and FIG. 3 is a front view of an electric cylinder device for lowering operation. 1...Ball screw shaft, 2...Friction plate, 3...Stopper, 5...Clutch friction plate, 6...Threaded portion at base end, 7...Retaining ring, 8...Clutch gear, A
... Actuating cylinder, C ... Outer cylinder, N ... Ball nut,
W...load object, M...motor.

Claims

[Scope of utility model registration request]

An outer cylinder through which the screw shaft is inserted is fixed to a housing housing a drive device that rotationally drives the base end of the screw shaft, and the outer cylinder is slid in the axial direction by a nut externally fitted onto the screw shaft. The base end of the actuating cylinder is fixed, and the outer periphery of the nut and the inner periphery of the outer cylinder are engaged by spline, so that the nut slides only in the axial direction without accompanying rotation due to the rotation of the screw shaft, In an electric cylinder device in which a load object is attached to the distal end of the actuating cylinder, the driving device has a proximal end between a fixed friction plate fixed to the proximal end of the screw shaft and a stopper attached to the distal end of the proximal end. A vertical drive clutch including a drive clutch friction plate that is screwed into a threaded part, and a non-return retaining ring loosely engaged with the base end between the clutch friction plate and the rotating friction plate. Electric cylinder device.