Acceleration detector with high response sensitivity
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorToshiyuki Yamashita
Life of this patent
Estimating the term…
Abstract
An acceleration detector including a mass member and a fixed contact, which keep contact with each other by an elastic member that presses the mass member to the fixed contact. When a vehicle undergoes an impact from its left side in its traveling direction, for example, and the mass member receives inertial force that exceeds the pushing force of the elastic member, the mass member moves toward the elastic member, thereby separating from the fixed contact. By providing the mass member and the fixed contact on both sides of the elastic member, side-to-side impact applied to the vehicle can be detected. The acceleration detector with such a configuration can detect the impact acceleration at high response sensitivity and in both directions.
Claims17
An acceleration detector for detecting acceleration exceeding a reference acceleration, said acceleration detector comprising:
- a fixed contact;
- a mass member having its first end in contact with said fixed contact;
- and
- an elastic member that has its first end in contact with a second end of said mass member, and presses said mass member to said fixed contact, wherein
- when said mass member, undergoing an inertial force exceeding a force of said elastic member, moves toward said elastic member, a conducting state between said mass member and said fixed contact is broken,
- wherein said mass member is composed of a conductive material, and said fixed contact comprises a plurality of fixed contacts, a first end of each of which makes contact with said mass member, and wherein when said mass member moves toward said elastic member, a conducting state between said plurality of fixed contacts via said mass member is broken.
An acceleration detector for detecting acceleration exceeding reference acceleration, said acceleration detector comprising:
- a first fixed contact;
- a second fixed contact;
- a first mass member having its first end made contact with said first fixed contact;
- a second mass member having its first end made contact with said second fixed contact;
- and
- an elastic member that has its first end made contact with a second end of said first mass member and its second end made contact with a second end of said second mass member, and that presses said first mass member to said first fixed contact and said second mass member to said second fixed contact, wherein
- when at least one of said first mass member and said second mass member, undergoing an inertial force exceeding a pushing force of said elastic member, moves toward said elastic member, said mass member that moves breaks its contact with one of said first fixed contact and said second fixed contact that kept contact with it.
An acceleration detector for detecting acceleration exceeding a reference acceleration, said acceleration detector comprising:
- a first fixed contact;
- a second fixed contact;
- a first mass member having its first end in contact with said first fixed contact;
- a second mass member having its first end in contact with said second fixed contact;
- and
- an elastic member that has its first end made contact with a second end of said first mass member and its second end in contact with a second end of said second mass member, and that presses said first mass member to said first fixed contact and said second mass member to said second fixed contact, wherein
- when at least one of said first mass member and said second mass member, undergoing an inertial force exceeding a force of said elastic member, moves toward said elastic member, said mass member that moves breaks its contact with one of said first fixed contact and said second fixed contact,
- wherein said first mass member comprises a first contacting portion and said second mass member comprises a second contacting portion, said first and second contacting portions making contact with each other before said elastic member reaches its elastic yield point when at least one of said first mass member and said second mass member moves.
Dependencies are inferred from the claim text.