Title:
EXHAUST GAS RECIRCULATION VALVE
Document Type and Number:
Japanese Patent JP2022070328
Kind Code:
A
Abstract:
To provide an exhaust gas recirculation valve which can suppress the adhesion of foreign matters included in atmospheric air which flows in from an atmospheric hole to a slide face of a bearing or a valve shaft.SOLUTION: An exhaust gas recirculation valve 100 comprises: an actuator 101 in which a valve shaft 120 is protrusively arranged; a bearing 130 for bearing the valve shaft 120; a housing 110 having an atmospheric hole 112 in a position in a direction in which the actuator 101 exists rather than a position in which the bearing 130 is held, and forming a cavity 113 having the atmospheric hole 112; a coil spring 140 arranged in the cavity 113; and coatings 150 doubly arranged at a strand of the coil spring 140 and opening and closing a space at the inside of an outside diameter of the coil spring 140 out of the cavity 113, and a space at the outside of the outside diameter, being coatings 150 formed into double-noren (shop curtain) shapes and having a plurality of notches which progress toward the strand in a radial direction of the strand of the coil spring 140 in different positions in a direction in which the strand of the coil spring 140 extends.SELECTED DRAWING: Figure 2
Inventors:
KANEI SHIGEO
Application Number:
JP2020179338A
Publication Date:
May 13, 2022
Filing Date:
October 27, 2020
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
F02M26/68; F02M26/74; F16K1/32; F16K27/02; F16K51/00
Attorney, Agent or Firm:
Sanno domestic and foreign patent office