US 9,941,083 B2Granted

Pressure switch

AssigneeKabushiki Kaisha Saginomiya Seisakusho

InventorsKenichi Matsuyama, Satoshi Miyakawa, Yoshihiro Hamabe

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Abstract

A pressure switch is disclosed. The pressure switch includes a housing and a pressure-receiving chamber that communicates with a duct to which an operating pressure is supplied. The pressure switch also includes a diaphragm assembly with a diaphragm that is displaced in response to a pressure inside the pressure-receiving chamber. The pressure switch also includes a movable contact that comes into contact with a fixed contact accommodated in a center portion of an inside of the housing when the pressure inside the pressure-receiving chamber is above a certain value. One of the movable contact and the fixed contact has radially diverging contact faces that are arranged such that contact between the fixed contact and the moveable contact can be established with at least two of the radially diverging contact faces at the same time.

Claims5

Dependent claims

A pressure switch comprising:

a housing to accommodate a connection terminal having a fixed contact into a center portion of an inside of the housing;
a pressure-receiving chamber communicating with a duct to which an operating pressure is supplied;
and
a diaphragm assembly having a diaphragm configured to be displaced in response to a pressure inside the pressure-receiving chamber and provided with a movable contact to come into contact with the fixed contact when the pressure inside the pressure-receiving chamber is equal to or above a predetermined value,
wherein the movable contact is integrally formed on a center portion of the diaphragm, and
wherein at least one of the movable contact formed on the diaphragm and the fixed contact has a plurality of radially diverging contact faces, and
wherein at least two or more faces of the radially diverging contact faces formed on one of the movable contact and the fixed contact are positioned to be able to contact an other of the fixed contact and the movable contact at the same time.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/932,779Filed 4 Nov 2015
Priority: JP 2014-2270337 Nov 2014
Published: US 2016/0133408 A112 May 2016
Granted: 10 Apr 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H01H 35/34
Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow: actuated by diaphragm
H01H 1/06
Contacts: characterised by the shape or structure of the contact-making surface, e.g. grooved
H01H 35/343
Actuated by diaphragm: by snap acting diaphragm
H01H 35/346
Actuated by diaphragm: in which the movable contact is formed or directly supported by the diaphragm