| 摘要 |
<p>A switch which can be used to actuate brake lights of a vehicle during air brake application. The switch is comprised of a flat-leaf type armature and an air-actuated plunger which is operative to move the flat-leaf type armature to a position where contacts on the armature touch fixed contacts to provide electrical circuit continuity between the fixed contacts. The switch is comprised of a housing, a resilient armature in the housing, a first support for slidably supporting a first end portion of the armature, at least one finger that projects out from the first end portion of the armature toward the second end portion thereof, the outer end portion of the finger being unsupported and having a first contact thereon. A second contact in the housing is in spaced relationship to the first contact. Air pressure actuated apparatus applies force against the armature between the first and second supports to flex the armature and thereby cause the contacts to close. The structure provides a fast make and break and wiping action of the contacts, mitigating the problems of welding of the contacts, contact build-up, etc.</p> |
