Floating caliper disc brake

• US 7,438,160 B2
• Filed: 09/13/2005
• Issued: 10/21/2008
• Est. Priority Date: 09/15/2004
• Status: Expired due to Fees

• Current Assignee: Akebono Brake Industry Company Limited (Akebono Brake Corporation)
• Original Assignee: Akebono Brake Industry Company Limited (Akebono Brake Corporation)
• Inventors: Maehara, Toshifumi
• Primary Examiner(s): Siconolfi; Robert A.
• Assistant Examiner(s): Nguyen; Vu Q
• Application Number:
  US11/223,920
• Publication Number:
  US 20060054430A1
• Time in Patent Office: 1,134 Days
• Field of Search: 188/73.31, 188/73.35, 188/73.36, 188/73.37, 188/73.38
• US Class Current: 188/73.31
• CPC Class Codes: F16D 2055/0008 Brake supports
• CPC Class Codes: F16D 2055/007 Pins holding the braking members
• CPC Class Codes: F16D 55/2262 the axial movement being guided by open sliding surfaces, e.g. grooves
• CPC Class Codes: F16D 55/22655 Constructional details of guide pins
• CPC Class Codes: F16D 65/095 Pivots or supporting members therefor
• CPC Class Codes: F16D 65/0977 Springs made from sheet metal

Abstract

A caliper 2a is disposed between rotation input side and rotation output side engagement portions 8, 9 of a support member 3a so as to restrict the movement of the caliper 2a in a circumferential direction of a rotor 1. A guide pin 26 which supports the caliper 2a is passed through guide holes 22 formed in pressure plates 11 which make up respective pads 10b in such a manner as to be capable of sliding in an axial direction of the rotor 1, whereby the caliper 2a is supported on the respective pads 10b attachably and detachably to the support member 3a while being allowed to move in the axial direction of the rotor 1 relative to the respective pads 10b.

Claims

1. A floating caliper disc brake comprising:

a support member fixed to a vehicle body;

a pair of pads disposed at both axial sides of a rotor and movably guided in an axial direction of the rotor by the support member;

a pair of arm portions formed in the support member, wherein one of the arm portions and the other of the arm portions are separated apart from each other in a circumferential direction of the rotor;

a caliper disposed between the pair of arm portions so as to be kept from moving in the circumferential direction of the rotor and supported by the pair of pads; and

supporting means provided between the pair of pads and the caliper and for supporting the caliper so that the caliper is movable in the axial direction of the rotor, and the caliper is attachable to and detachable from the support member,

wherein the caliper comprises;

a bridge portion straddling the rotor and the pair of pads;

a claw portion provided at one end of the bridge portion; and

a cylinder portion provided at the other end of the bridge portion, wherein a piston is fittingly mounted in the cylinder portion,

further comprising an opening provided in the bridge portion that penetrates through the bridge portion in a radial direction of the rotor;

wherein the supporting means comprises;

a holding member kept from moving in a radially outward direction of the rotor through engagement with the pair of pads, the holding member projecting outwards of the bridge portion from the opening of the bridge portion; and

a locking member that keeps the caliper from moving in the radial direction of the rotor through engagement with the holding member; and

wherein the holding member is passed through the opening from inward to outward with respect to the radial direction of the rotor, and

the locking member is inserted in the axial direction of the rotor between radially outward edges of the pads and the holding member.

2. The floating caliper disc brake according to claim 1, wherein the holding member is formed into a shape with a substantially C-shaped cross section that straddles the rotor and which is made to open radially inwards of the rotor, and each of the pair of pads comprises a projection projecting in the radial direction of the rotor and having a substantially T-shaped cross section, wherein each of the projection fits in the holding member and is movable in the axial direction of the rotor.

3. The floating caliper discbrake according to claim 2, wherein the pair of pads are movably guided in the axial direction of the rotor relative to the support member through engagement of a recessed groove provided on one of the pair of pads and the support member with a raised portion provided on the other thereof.

4. The floating caliper disc brake according to claim 1, wherein the pair of pads are movably guided in the axial direction of the rotor relative to the support member through engagement of a recessed groove provided on one of the pair of pads and the support member with a raised portion provided on the other thereof.

5. The floating caliper disc brake according to claim 4, further comprising:

a holding spring disposed between the caliper and the pair of pads and the support member and for pressing the pair of pads to the support member in the radial direction so that the raised portion and the recessed groove are engaged.