Title:
流量制御弁
Document Type and Number:
Japanese Patent JP6860336
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To eliminate unsatisfactory state in which a controlling operation becomes unstable when a driving operation is started (when a low voltage driving is performed) even under severe use environment such as a heat cycle and to assure high degree of safety and reliability in operation.SOLUTION: When a flow control valve 1 is constituted to comprise a valve body mechanism part 5 having a plunger part 7 for supporting a valve body part 6 with a valve part 6s formed by rubber raw material R and displaced in an axial direction Fs in correspondence with a value of a driving voltage applied to a solenoid part 3 and having an elastic member 8 for elastically supporting this plunger part 7 and an orifice part 9 arranged in front of an axial direction Fs of the valve part 6s to define a flow passage J and formed with metallic raw material M having a valve seat part 9s to be opened or closed, there is provided a DLC film forming layer 10 in which a surface 9sf of the valve seat part 9s to which at least the valve part 6s is abutted has a predetermined film thickness Ls improving a peeling characteristic when the valve part 6s abutted against said surface 9sf is spaced apart.SELECTED DRAWING: Figure 1
Inventors:
Yoshiki Daiki
Application Number:
JP2016243352A
Publication Date:
April 14, 2021
Filing Date:
December 15, 2016
Export Citation:
Assignee:
Takano Co., Ltd.
International Classes:
F16K25/00; F16K31/06
Domestic Patent References:
| JP201025303A | ||||
| JP2001295948A | ||||
| JP2000283315A | ||||
| JP2009167924A | ||||
| JP201242038A | ||||
| JP2007100740A |
Attorney, Agent or Firm:
Shimoda Shigeru