Title:
FLOW CONTROL VALVE
Document Type and Number:
Japanese Patent JP2017223292
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a flow control valve capable of maintaining sealability between a housing and a valve stem by improving durability of a lip seal.SOLUTION: An EGR valve includes: a housing including a flow passage; a valve seat provided in the flow passage; a valve body provided so as to be seated in the valve seat; a valve stem in which the valve body is provided at one end part; an actuator for driving the valve stem for moving the valve body with respect to the valve seat; and a lip seal 13 for sealing between the housing and the valve stem and for sealing the actuator from the flow passage. The lip seal 13 includes: a metal ring 21 formed by cylindrical metal; and a rubber part 22 formed by a rubber material held by the metal ring 21. A plurality of communication holes 51 for communicating inside and outside of the metal ring 21 are arranged evenly across the whole area in an outside cylindrical part 31 and an inside cylindrical part 33 of the metal ring 21.SELECTED DRAWING: Figure 3
Inventors:
SHIRAI KAZUYA
Application Number:
JP2016119231A
Publication Date:
December 21, 2017
Filing Date:
June 15, 2016
Export Citation:
Assignee:
AISAN IND
International Classes:
F16K41/08; F02M26/67; F16J15/3204
Attorney, Agent or Firm:
Patent Business Corporation Cosmos Patent Office