Title:
弁体駆動装置
Document Type and Number:
Japanese Patent JP7340378
Kind Code:
B2
Abstract:
To provide a valve element driving device that, even in a structure in which a valve element is rotated about an axis of a rotor to open and close a flow path, enables opening and closing of the flow path to be accurately performed with a simple structure.SOLUTION: A valve element driving device comprises a valve body 7 including a rotor 5 for rotating a valve element 4, a stator 9, and a power transmission switching part 6 for switching between a power transmission state, in which the rotational force of the rotor is transmitted to the valve element, and a power non-transmission state. The power transmission switching part comprises a coil spring 27 that is disposed in a power transmission path between the rotor 5 and the valve element 4 and is mounted in a state of applying fastening force to a mounted portion 25 of the rotor, and a rotation regulation part 29 that regulates integral rotation of the coil spring with the rotor. The power transmission state is created by the coil spring rotating integrally with the rotor due to friction by the fastening force, and the power non-transmission state is created by the rotation regulation part regulating the integral rotation of the coil spring with the rotor and by the coil spring slipping against the rotating mounted part.SELECTED DRAWING: Figure 6
Inventors:
Satoru Yokoe
Application Number:
JP2019141224A
Publication Date:
September 07, 2023
Filing Date:
July 31, 2019
Export Citation:
Assignee:
Nidek Instruments Co., Ltd.
International Classes:
F16K31/04
Domestic Patent References:
| JP11243663A | ||||
| JP2015232385A | ||||
| JP2002039405A | ||||
| JP2006316835A | ||||
| JP2000149805A | ||||
| JP2009011072A |
Attorney, Agent or Firm:
Hiroki Ishii