JPS62167960U

JPS62167960U -

Info

Publication number: JPS62167960U
Application number: JP4841086U
Authority: JP
Priority date: 1986-03-31
Filing date: 1986-03-31
Publication date: 1987-10-24

Description

[Brief explanation of the drawing]

第１図はこの考案の１実施例である手動自動切
換式動力伝達装置を組み込んだバルブ用アクチユ
エータの要部断面図、第２図は外鍔と内鍔との係
合状態を示す、第１図における―切断部矢視
断面図、第３図は平歯車と内歯平歯車とが噛合し
た場合の、第１図における―切断部矢視断面
図である。１……小形ウオーム、２……小形ウオームホイ
ール、３……大形ウオーム、４……大形ウオーム
ホイール、５……ケーシング、６……中間駆動軸
、７……すべりキー、８……平歯車、９……外鍔
、１０……手動ハンドル、１１……軸部、１２…
…内鍔、１３……Ｏーリング、１４……内歯平歯
車。 FIG. 1 is a cross-sectional view of a main part of a valve actuator incorporating a manual automatic switching power transmission device, which is an embodiment of this invention, and FIG. FIG. 3 is a cross-sectional view of the cut portion in FIG. 1 taken in the direction of the arrows when the spur gear and the internal spur gear are in mesh with each other. 1...Small worm, 2...Small worm wheel, 3...Large worm, 4...Large worm wheel, 5...Casing, 6...Intermediate drive shaft, 7...Sliding key, 8...Flat Gear, 9... Outer flange, 10... Manual handle, 11... Shaft, 12...
...Inner flange, 13...O-ring, 14...Internal tooth spur gear.

Claims

[Scope of utility model registration request]

A small worm reduction mechanism connected to the output shaft of the driving prime mover, a large worm reduction mechanism connected to the driven shaft, and a small worm wheel of the small worm reduction mechanism are slidably engaged in the axial direction, and , a large worm of the large worm reduction mechanism is fixedly installed, an intermediate drive shaft rotatably supported in a casing, and the small worm wheel are pulled out along the intermediate drive shaft, and the small worm reduction mechanism is moved through the small worm reduction mechanism. a clutch member that interrupts the power transmission path with a clutch member that is slidable in the axial direction of the intermediate drive shaft;
A manual automatic comprising: a shaft portion rotatably supported by a casing in a plane perpendicular to the shaft; and a manual handle for manually rotating the intermediate drive shaft in a state where the power transmission path is cut off. In the switching power transmission device, a spur gear is provided at an extended shaft end of the intermediate drive shaft on the manual handle side, and the shaft engages with the spur gear by moving the shaft in the axial direction inside the shaft of the manual handle. 1. A manual automatic switching power transmission device comprising an internally toothed spur gear whose rotation center is offset from the axis of the spur gear.