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US 8,556,353 B2Granted
Brake device
AssigneeHitachi, Ltd.
InventorsHideaki Ishii, Kazumoto Sano, Kunihiro Matsunaga, Masaru Sakuma
Life of this patent
Estimating the term…
Abstract
In response to depression of a brake pedal (6), an electric brake (5) mounted on the rear side starts to generate a braking force at the time of stroke h1 before a fluid pressure brake (4) mounted on the front side starts to generate a braking force when the stroke reaches stroke h2. Accordingly, the rear side is able to generate a braking force prior to the front side, whereby it is possible to reduce a rigid feeling, and therefore improve the pedal feeling.
Claims20
A brake device comprising:
- a front braking mechanism operable to perform a braking operation by pressing of a brake pad against a rotating disk rotor with use of a fluid pressure generated in a master cylinder in response to an operation of a braking operator;
- and
- a rear braking mechanism operable to perform a braking operation with use of another power source than the fluid pressure generated in the master cylinder in response to the operation of the braking operator,
- wherein the rear braking mechanism generates a braking force before the front braking mechanism generates a braking force with use of the fluid pressure generated in the master cylinder when the braking operator is operated.
1 more element
A brake device comprising:
- a first braking mechanism operable to perform a braking operation by a caliper adapted to press a brake pad against a rotating disk rotor with use of a fluid pressure generated in a master cylinder in response to an operation of a brake pedal;
- and
- a second braking mechanism operable to perform a braking operation with use of another power source than the fluid pressure generated in the master cylinder in response to the operation of the brake pedal,
- wherein the second braking mechanism generates a braking force before the brake pad is pressed against the rotating disk rotor by the first braking mechanism with use of the fluid pressure in the master cylinder when the brake pedal is operated.
1 more element
A brake device comprising
- a front braking mechanism operable to perform a braking operation by pressing of a brake pad against a rotating disk rotor with use of a fluid pressure generated in a master cylinder in response to an operation of a braking operator;
- a rear braking mechanism operable to perform a braking operation with use of another power source than the fluid pressure generated in the master cylinder in response to the operation of the braking operator;
- and
- an operation detector operable to detect an operation of the braking operator,
- wherein the rear braking mechanism starts to operate when the operation detector detects that the braking operator is operated, and generates a braking force before the operation detector detects that an operation value, for causing the front braking mechanism to generate a braking force with use of the fluid pressure generated in the master cylinder, is achieved.
2 more elements
Dependencies are inferred from the claim text.