Patent ID: 6495777
Filing Date: 2002-12-17
Classification: H01H

Abstract:
A pressure switch comprising:a deformable pressure sensor device; a link rod attached to the pressure sensor device; the pressure sensor device adapted to receive a pressure input and deform according to the pressure input such that the pressure input causes deformation of the pressure sensor device which then moves the link; a contact point fine-tuning device comprising first and second contact points, movement of the first contact point is controlled by the link rod and the first contact point is detachably contacted with the second contact point when the input pressure is not present, the first contact point is connected to an elastic member positioned above the pressure sensor device; a frame base positioned above the pressure sensor device, the frame base extends upwards from the pressure sensor device and is fixed to the contact point fine-tuning device, the contact point fine-tuning device is disposed on the frame base; a rotary plate adjustably attached to the link rod, the rotary plate includes a supporting section adapted for contacting the elastic member; a contact point fine-tuner device positioned above the first contact point, the distance between the contact point fine-tuner and the first contact point is adjustable; when the pressure input causes the deformation of the pressure sensor device, the supporting section of the rotary plate pushes the elastic member, thereby causing separation between the first and second contact points after a time delay due to the elasticity of the elastic member; and by adjusting the distance between the contact point fine-tuner device and the first contact point, as well as the distance between the supporting section of the rotary plate and the elastic member, the pressure input required to activate the separation between the first and second contact points can be customized.