DISK BRAKE PAD AND DISK BRAKE APPARATUS
First Claim
1. A disk brake pad supported on a pad support member movably in an axial direction of a rotor for a disk brake, comprising:
- a lining; and
a back plate supporting a back surface of the lining,wherein shapes of opposite sides of the back plate in a circumferential direction of the rotor are asymmetric with respect to the circumferential direction,a first side part of the back plate in the circumferential direction includes a guided portion configured to engage movably in the axial direction with a guiding portion formed in the pad support member, the guided portion is disposed at a position more inward in a radial direction of the rotor than a line of action of a brake tangential force applied in braking, andthe guided portion is configured to engage with the guiding portion so as to support a brake tangential force applied toward a second side part of the back plate which is opposite to the first side part in the circumferential direction in braking, and the back plate is configured to support a brake tangential force applied toward the first side part in braking at a portion of the back plate that exists more outward in the radial direction than the line of action of the brake tangential force applied toward the first side part, so that the back plate is configured to receive a moment pressing down the second side part inward in the radial direction in both of forward-run braking and backward-run braking operations.
1 Assignment
0 Petitions
Accused Products
Abstract
A disk brake pad includes a lining and a back plate supporting the lining. A first side part of the back plate in the circumferential direction includes a guided portion configured to engage movably in the axial direction with a guiding portion of a pad support member. The guided portion is disposed at a position more inward in the radial direction than a line of action of a brake tangential force applied in braking, so as to support a brake tangential force applied toward a second side part of the back plate in the circumferential direction in braking. The back plate is configured to support a brake tangential force applied toward the first side part in braking at a portion thereof that exists more outward in the radial direction than the line of action of the brake tangential force.
17 Citations
16 Claims
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1. A disk brake pad supported on a pad support member movably in an axial direction of a rotor for a disk brake, comprising:
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a lining; and a back plate supporting a back surface of the lining, wherein shapes of opposite sides of the back plate in a circumferential direction of the rotor are asymmetric with respect to the circumferential direction, a first side part of the back plate in the circumferential direction includes a guided portion configured to engage movably in the axial direction with a guiding portion formed in the pad support member, the guided portion is disposed at a position more inward in a radial direction of the rotor than a line of action of a brake tangential force applied in braking, and the guided portion is configured to engage with the guiding portion so as to support a brake tangential force applied toward a second side part of the back plate which is opposite to the first side part in the circumferential direction in braking, and the back plate is configured to support a brake tangential force applied toward the first side part in braking at a portion of the back plate that exists more outward in the radial direction than the line of action of the brake tangential force applied toward the first side part, so that the back plate is configured to receive a moment pressing down the second side part inward in the radial direction in both of forward-run braking and backward-run braking operations. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A disk brake apparatus, comprising:
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a pad support member; a pad, supported on the pad support member so as to move in an axial direction of a rotor for the disk brake apparatus, and including a lining and a back plate supporting a back surface of the lining; and a piston for pressing the pad against a surface of the rotor, wherein a first side part of the pad support member in a circumferential direction of the rotor includes a guiding portion, shapes of opposite sides of the back plate in the circumferential direction are asymmetric with respect to the circumferential direction, the first side part of the back plate includes a guided portion, configured to be engaged movably in the axial direction with the guiding portion, the guided portion is disposed at a position more inward in a radial direction of the rotor than a line of action of a brake tangential force applied in braking, and the guided portion is configured to engage with the guiding portion so as to support a brake tangential force applied toward a second side part of the back plate which is opposite to the first side part in the circumferential direction in braking, and the back plate is configured to support a brake tangential force applied toward the first side part in braking at a portion of the back plate that exists more outward in the radial direction than the line of action of the brake tangential force applied toward the first side part, so that the back plate is configured to receive a moment pressing down the second side part inward in the radial direction in both of forward-run and backward-run braking operations. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification