Pressure reducing valve

Details Pressure reducing valve Pressure reducing valve

G - Physics

05

D

G05D 16/06 (2006.01) F16K 17/30 (2006.01) F16K 31/365 (2006.01) F16K 49/00 (2006.01)

Patent

CA 2748702

In a pressure reducing valve, a valve mechanism including a valve body that can be seated on a valve seat is housed in a body and a valve shaft portion which is coaxially connected to the valve body is linked to a central part of a diaphragm. A diaphragm rod (85) that integrally has a first retainer (83) abutting against one face of the diaphragm (16) is inserted through the central part of the diaphragm (16); and at least a second retainer (84) is sandwiched between the other face of the diaphragm (16) and an engagement portion (89) which is formed by crimping one end portion of the diaphragm rod (85) on a spring chamber side, thereby forming a diaphragm assembly (90) including at least the diaphragm (16), the second retainer (84), and the diaphragm rod (85) that integrally has the first retainer (83). Further, the diaphragm rod (85) of the diaphragm assembly (90) is linked to the valve shaft portion (34b). Accordingly, the productivity at the time of assembling the pressure reducing valve can be enhanced.

Soupape de décharge configurée de telle manière qu'un mécanisme de soupape doté d'un élément de soupape capable de prendre appui sur un siège de soupape soit contenu dans un corps et qu'un tronçon d'axe de soupape relié de façon coaxiale à l'élément de soupape soit également relié à la section centrale d'un diaphragme. On fait passer une tige (85) de diaphragme comprenant un premier élément (83) de retenue qui entre en contact avec une surface du diaphragme (16) à travers la section centrale du diaphragme (16) et au moins un deuxième élément (84) de retenue est pris en sandwich entre l'autre surface du diaphragme (16) et une section (89) d'accrochage formée par sertissage, côté chambre à ressort, d'un tronçon d'extrémité de la tige (85) de diaphragme. Ceci forme un ensemble diaphragme (90) comprenant au moins : la tige (85) de diaphragme comprenant le premier élément (83) de retenue ; le diaphragme (16) ; et le deuxième élément (84) de retenue. La tige (85) de diaphragme de l'ensemble diaphragme (90) est reliée au tronçon d'axe de soupape. La configuration ci-décrite accroît la productivité de montage de la soupape de décharge.

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