Title:
OPERATION UNIT
Document Type and Number:
Japanese Patent JP2017082826
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an operation unit manually operating a valve shaft of an adjustment valve, and having a paradox planetary gear mechanism capable of being fixed at a desired position.SOLUTION: An operation unit 100 has: a sun gear 3a rotated while receiving torque by a driving motor 2; a fixed internal gear 5 fixed and disposed in a manner of surrounding the sun gear, and having teeth on its inner peripheral face; a plurality of planetary gears 4_1 to 4_2 engaged with the sun gear and the fixed internal gear and rotating while revolving around the sun gear; a movable internal gear 6 disposed coaxially with the fixed internal gear, having teeth engaged with the planetary gears on its inner peripheral face, and rotatably disposed; an output shaft 7 connected to the movable internal gear for rotating a valve shaft of an adjustment valve; and manual operation mechanisms 3b, 8 for rotating and the sun gear or the planetary gears by the force applied thereto from the outside of a housing 1.SELECTED DRAWING: Figure 1
Inventors:
OHASHI TOMOFUMI
Application Number:
JP2015208850A
Publication Date:
May 18, 2017
Filing Date:
October 23, 2015
Export Citation:
Assignee:
AZBIL CORP
International Classes:
F16K31/05; F16K31/53
Attorney, Agent or Firm:
Masaki Yamakawa
Shigeki Yamakawa
Shigeki Yamakawa