JPH0456956U

JPH0456956U -

Info

Publication number: JPH0456956U
Application number: JP9905790U
Authority: JP
Priority date: 1990-09-25
Filing date: 1990-09-25
Publication date: 1992-05-15

Description

[Brief explanation of the drawing]

本考案の実施例、電動ボールねじ装置をジヤキ
に応用した実施例を示す、第１図は断面正面図、
第２図は手動用ハンドルの断面正面図、第３図は
ねじ溝軸取付ギヤの断面図である。１……固定スリーブ基台部、２……移動スリー
ブ、３……移動スリーブ回転防止溝、４……回転
防止ボールベアリング、５……回転防止ボールベ
アリング抜止リング、６……ねじ溝軸、７……透
孔、８……ボールねじ、９……ねじ溝軸取付ギヤ
、１０……モーター、１１……モーター取付ギヤ
、１２……緩衝用ボールベアリング、１３……手
動用ハンドル、１４……半円溝、半球溝。 An embodiment of the present invention, showing an embodiment in which an electric ball screw device is applied to a screwdriver, Fig. 1 is a cross-sectional front view;
FIG. 2 is a sectional front view of the manual handle, and FIG. 3 is a sectional view of the threaded groove shaft-mounted gear. DESCRIPTION OF SYMBOLS 1...Fixed sleeve base part, 2...Moving sleeve, 3...Moving sleeve rotation prevention groove, 4...Rotation prevention ball bearing, 5...Rotation prevention ball bearing retaining ring, 6...Thread groove shaft, 7 ... Through hole, 8 ... Ball screw, 9 ... Thread groove shaft mounting gear, 10 ... Motor, 11 ... Motor mounting gear, 12 ... Buffer ball bearing, 13 ... Manual handle, 14 ... semicircular sulcus, hemispherical sulcus.

Claims

[Scope of Claim for Utility Model Registration] (1) A movable sleeve, a screw groove shaft (helical) for a ball screw to be inserted into the movable sleeve, a movable sleeve rotation prevention groove provided vertically in the movable sleeve, and a fixed sleeve. A ball bearing or a fixing pin that engages with the rotation prevention groove of the movable sleeve is mounted or fixed on the base portion, and a plurality of through holes that engage with the thread groove for the ball screw and the plurality of throughholes are further mounted on the movable sleeve. The same number of ball screws as the holes are installed in the plurality of through holes, and a gear is formed on one side of the thread groove shaft, and a circle perpendicular to the thread groove axis is formed on the lower surface of the gear on one side of the thread groove shaft. A semicircular groove or hemispherical groove for a buffer ball bearing is provided at an inner position of the periphery, and a plurality of buffer ball bearings that fit into the semicircular groove or hemispherical groove for the buffer ball bearing are installed, The movable sleeve is fitted and inserted into the fixed sleeve base, a motor is attached and fixed to the fixed sleeve base, a gear that meshes with the gear on one side of the thread groove shaft is attached to the motor, and the above screw is inserted. The gear on one side of the grooved shaft and the gear of the motor are engaged and interlocked to rotate the motor forward or backward, thereby interlocking the rotation of the threaded grooved shaft, and the rotation prevention groove of the movable sleeve and the fixed sleeve base are interlocked. An electric ball screw device characterized in that the movable sleeve can be moved upwardly or downwardly by the effect of the ball screw by preventing rotation of the movable sleeve with a rotation-preventing ball bearing or a fixing pin on the base. (2) Remove the motor, leave the gear of the motor and attach a manual handle to the gear and rotate it, or install a gear or ratchet gear to the manual handle and rotate or rotate the manual handle in small steps. 2. The electric ball screw device according to claim 1, wherein the movable sleeve can be moved upwardly or downwardly by moving the movable sleeve upwardly or downwardly.