Switch for vehicle
View Patent ↗A vehicle switch is capable of properly switching on/off electrical connection between fixed contacts. The fixed contacts of the switch are oppositely disposed on a substrate so as to be parallel to a moving direction of a moveable piece. A barrier constituted by a dent or a projection is disposed between the fixed contacts to increase the creeping distance between the fixed contacts. With such a simple structure, the vehicle switch can suppress degradation of insulation characteristics between the fixed contacts, whereby the electrical connections between the fixed contacts are properly established or cut-off.
1. A switch for a vehicle, comprising:
a substrate;
a movable piece movably mounted for movement relative to said substrate in a moving direction between first and second positions;
a first fixed contact and a second fixed contact disposed in parallel along said moving direction on said substrate;
wherein said movable piece includes a first contact section slidably arranged for slidable contact with said first fixed contact upon movement of said movable piece in said moving direction;
wherein said movable piece includes a second contact section slidably arranged for slidable contact with said second fixed contact upon movement of said movable piece in said moving direction;
wherein said substrate includes a barrier disposed between said first and second fixed contacts;
wherein said barrier comprises one of a dent and a projection;
wherein said first fixed contact has a greater length, in said moving direction, than said second fixed contact;
wherein said barrier has a greater length, in said moving direction, than said second fixed contact; and
wherein opposing ends of said barrier both extend beyond opposing ends of said second fixed contact, respectively, along said moving direction.
2. The switch of claims 1 , wherein
said barrier comprises the dent, and said dent comprises one of a slit and a groove.
3. The switch for vehicles of claim 1 , further comprising:
a box-shaped case made of insulating material;
an operation component housed in said case so as to be movable in said moving direction, said operation component holding said movable piece; and
a coil spring disposed between said case and said operation component so as to urge said operation component in a direction away from said substrate.
4. The switch of claim 1 , further comprising:
a flexible resin waterproof cover covering said case and said operation component.
5. The switch of claim 1 , wherein
said substrate is made of insulating material.