Brake pad wear detector

Patent metadata

Field	Value
Publication number	US-10697513-B2
Application number	US-201615559313-A
Country	US
Kind code	B2
Filing date	Mar 31, 2016
Priority date	Mar 31, 2015
Publication date	Jun 30, 2020
Grant date	Jun 30, 2020

Abstract

This brake pad wear detector is provided with an attachment part attached to a back plate having a first surface to which a lining in contact with a sliding surface of a disc rotor is secured and a second surface on the side opposite the first surface, an arm part protruding from the attachment part toward the side of the first surface opposite from the second surface, the arm part being curved toward the opposite side, and a contact part provided to the arm part and provided to a position where the contact part will come into contact with the disc rotor when the lining has worn away.

First claim

The invention claimed is:

1. A brake pad abrasion detector for a brake pad comprising a lining configured to be brought into contact with a sliding surface of a disc rotor, and a back plate having a first side surface to which the lining is fixed, a second side surface opposite to the first side surface so that the lining is located on a first side surface side of the back plate, the first side surface facing a first direction and the second side surface facing a second direction opposite the first direction, and an outer peripheral surface connecting the first side surface and the second side surface and facing a third direction different from the first direction and the second direction, the brake pad abrasion detector comprising:
an attachment portion which is a plate-shaped portion having a first surface configured to be in contact with the first side surface and a second surface opposite to the first surface;
a nipping portion configured to be in contact with the second side surface;
a connecting portion connecting the attachment portion and the nipping portion and configured to be in direct contact with the outer peripheral surface of the back plate;
an arm portion configured to project from the attachment portion in the first direction, the arm portion configured to be bent onto the first side surface side of the back plate; and
a contact portion disposed on the arm portion at a position configured to be contacted by the disc rotor when the lining is abraded, wherein
the arm portion has a first extending portion configured to extend in a direction opposite to the contact portion along the first side surface,
the arm portion has a second extending portion disposed at a folded end portion of the first extending portion and configured to extend in the first direction,
the arm portion has a third extending portion disposed at a folded end portion of the second extending portion and extends a direction toward the contact portion,
the arm portion has a fourth extending portion which is disposed at a folded end portion of the third extending portion, is configured to contact the first side surface, and has a fold in a direction toward the contact portion.

2. The brake pad abrasion detector according to claim 1 , wherein the arm portion is configured to be located radially outward of an outer circumference of the disc rotor.

3. The brake pad abrasion detector according to claim 1 , wherein the contact portion is configured to extend in an inner radial direction of the disc rotor.

4. The brake pad abrasion detector according to claim 1 , wherein the nipping portion has an elastic engagement portion configured to be engaged with an engaged portion of the back plate.

Assignees

• Advics Co Ltd

Inventors

• Arakane Shohei

Classifications

• F16D66/024 Primary

  Sensors mounted on braking members adapted to contact the brake disc or drum, e.g. wire loops severed on contact · CPC title

• F16D66/02

  Apparatus for indicating wear · CPC title

• F16D65/092

  for axially-engaging brakes, e.g. disc brakes · CPC title

• F16D66/022 Primary

  indicating that a lining is worn to minimum allowable thickness · CPC title

• F16D65/095

  Pivots or supporting members therefor · CPC title