Brake apparatus
AssigneeJidosha Kiki Co., Ltd.
InventorsRyuji Ohta, Michio Kobayashi
Life of this patent
Estimating the term…
Abstract
A brake apparatus has an actuator mechanism for bringing a friction member into tight contact with a braking member so as to obtain a braking force, the actuator mechanism including: a moving piezoceramic member which can be elongated/contracted along a direction in which the friction member is urged; a holder disposed between opposing ends of the friction member and the moving piezoceramic member to couple the friction member and the moving piezoceramic member; and members for selectively restraining movement of the moving piezoceramic element in a direction parallel to the direction in which it is urged with respect to a fixing member.
Claims16
A disc brake apparatus having an actuator mechanism for bringing a friction member into tight contact with a disc braking member so as to obtain a braking force, said actuator mechanism comprising:
- a moving piezoceramic member which can be extended/contracted along an urging direction of said friction member;
- a pair of holders respectively disposed between corresponding ends of said friction member and said moving piezoceramic member and at a rear end of said piezoceramic member, said holders being translatable along said direction;
- and
- a pair of restraining means which are respectively mounted on said pair of holders and which comprises restraining piezoceramic members for selectively restraining movement of said holders and said moving piezoceramic member with respect to a fixing means in a direction parallel to the urging direction.
A brake apparatus having an actuator mechanism for bringing a friction member into tight contact with a braking member so as to obtain a braking force, said actuator mechanism comprising:
- a moving piezoceramic member which can be elongated/contracted along an urging direction of said friction member;
- a holder disposed between opposing ends of said friction member and said moving piezoceramic member to couple said friction member and said moving piezoceramic member;
- a cylindrical body;
- a plurality of arcuated pad members radially disposed within said cylindrical body;
- and
- a plurality of restraining means for engaging with end portions of every two adjacent arcuated pad members and for acting so as to bring said arcuated pad members into tight contact with an inner wall surface of said cylindrical body or to separate said arcuated pad members from the inner wall surface thereof,
- said holder supporting said arcuated pad members and said restraining means.
A brake apparatus having an actuator mechanism for bringing a friction member into tight contact with a braking member so as to obtain a braking force, said actuator mechanism comprising:
- a moving piezoceramic member which can be elongated/contracted along an urging direction of said friction member;
- a holder disposed between opposing ends of said friction member and said moving piezoceramic member to couple said friction member and said moving piezoceramic member;
- a cylindrical body;
- two semicircular pad members whose arcuated surfaces oppose each other in said cylindrical body;
- a plurality of restraining means, disposed between opposing ends of said semicircular pad members, for acting to bring said semicircular pad members into tight contact with an inner wall surface of said cylindrical member or to separate said semicircular pad members from the inner wall surface thereof,
- said holder supporting said semicircular pad members and said restraining means.
Dependencies are inferred from the claim text.