Diaphragm and solenoid valve equipped with diaphragm
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United States of America Patent
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N/A
Issued Date -
Mar 16, 2006
app pub date -
Sep 8, 2005
filing date -
Sep 14, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A linear solenoid valve having a solenoid element having a plunger driven by a coil assembly and a valve element having a spool shifted by being pushed by the plunger. A diaphragm serves as an isolator for the solenoid element and includes an outer periphery portion attached to a yoke; an inner periphery portion attached to the spool; and a film portion elastically deformable in response to the shifting of the spool. The film portion is undulated and includes an outer annular protrusion disposed in an outer periphery area thereof and having a relatively large radius of curvature, and an inner annular protrusion disposed in an inner periphery area thereof and having a relatively small radius of curvature. The outer annular protrusion protrudes in a shifting direction of the spool, whereas the inner annular protrusion protrudes in a direction opposite to the direction in which the outer annular protrusion protrudes.
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