Patent ID: 7230193
Filing Date: 2007-06-12
Classification: H01H

Abstract:
1. A jerk-initiated switch adapted to be mounted on and to be in electric contact with a support, said jerk-initiated switch comprising: a housing adapted to be mounted on the support in an upright direction, and having an inner housing wall which defines an accommodation chamber therein; first and second terminals which are disposed to define a switching action enabling path of a straight length that crosses said accommodation chamber, and which are coupled to effect a change of an electric switching state in response to an interruption of said switching action enabling path; a ball member received rollably in said accommodation chamber, said ball member being configured such that when said housing is jerked, said ball member is displaceable from a first position, where said ball member is disposed to interrupt said switching action enabling path so as to establish a first electric switching state, to a second position, where said ball member is disposed outside said switching action enabling path so as to establish a second electric switching state; and a momentum reducing member which is disposed in said accommodation chamber, and which is configured to yield under impact from said ball member so as to reduce momentum of said ball member when said ball member is displaced from the first position to the second position, wherein said ball member directly engages said momentum reducing member in the second position, and disengages from said momentum reducing member in the first position.