Patent ID: 8196468
Filing Date: 2012-06-12
Classification: G01H

Abstract:
1. A vibration sensor comprising: a base defining a receiving space and comprising a holding block formed at a center of a bottom of the receiving space; a plurality of cantilever, each cantilever of the plurality of cantilevers comprises a cylindrical side surface, a first end surface, and a second end surface opposite to the first end surface, each cantilever of the plurality of cantilevers connects to the holding block via the second end surface, each cantilever of the plurality of cantilevers defines a guiding cutout extending from the first end surface and along the longitudinal direction of the cantilever with a predetermined distance from the first end surface, the guiding cutout communicates with diametrically opposite side surface of each cantilever of the plurality of cantilevers, the guiding cutout comprising two inner surfaces parallel spaced from each other; a plurality pairs of resistors, each pair of resistors correspondingly received in the inner surfaces from the first end surface to the second end surface, the second end surface of the cantilever connects to the holding block; a conducting ring clipped in the guiding cutouts and slidably contacting with the resistors, the conducting ring comprises a number of conducting parts made of a conducting material, and a number of insulation parts made of insulation, the conducting parts correspondingly contacts with the resistor received in each cantilever; a plurality of helical springs correspondingly sleeved on each cantilever and being compressed by the conducting ring and the holding block; a plurality pairs of first and second pins formed in the holding block for correspondingly connected to the resistors in each cantilever; a plurality of resistance meter correspondingly connected to each pair of first and second pins; and a cover deposited on the base for covering the receiving space.