Title:
VALVE DEVICE
Document Type and Number:
Japanese Patent JP2017089789
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a valve device which improves responsiveness in valve opening by inhibiting inclination of a positive-pressure spring.SOLUTION: A valve device 10 comprises: a valve case 15 provided with a valve chamber V and a valve seat 26; a valve element 40 having a seal part 41 which contacts with and separates from the valve seat 26, and an outer peripheral part 50 arranged to extend for a predetermined length along the inner periphery of the valve chamber V; and a positive-pressure spring S1 biasing the valve element 40 towards the valve seat 26 of the valve case 15. On the outer peripheral part 50 of the valve element 40, plural openings 55 are formed, which extend in the axial direction of the outer peripheral part 50 and are arranged at predetermined intervals in the circumferential direction. Ribs 28 are provided, which are arranged to protrude from the inner periphery of the valve chamber V of the valve case 15 towards the inner diameter direction of the valve case 15, pass through the respective openings 55 of the valve element 40 and regulate radial movement of the positive-pressure spring S1.SELECTED DRAWING: Figure 2
Inventors:
YAMAGUCHI HIROHARU
Application Number:
JP2015222012A
Publication Date:
May 25, 2017
Filing Date:
November 12, 2015
Export Citation:
Assignee:
PIOLAX INC
International Classes:
F16K24/00; B60K15/035; F02M37/00; F16K15/18; F16K17/196
Attorney, Agent or Firm:
Shigeru Matsui