Disc brakes

• US 4,373,616 A
• Filed: 01/26/1981
• Issued: 02/15/1983
• Est. Priority Date: 09/28/1978
• Status: Expired due to Fees

• Current Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.)
• Original Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.)
• Inventors: Kondo, Toshio
• Primary Examiner(s): Reger, Duane A.
• Application Number:
  US06/228,186
• Time in Patent Office: 750 Days
• Field of Search: 188/72.4, 188/73.32, 188/73.39, 188/73.43, 188/73.45
• US Class Current: 188/73.45
• CPC Class Codes: F16D 2055/0008 Brake supports
• CPC Class Codes: F16D 2055/007 Pins holding the braking members
• CPC Class Codes: F16D 55/2265 the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing
• CPC Class Codes: F16D 65/095 Pivots or supporting members therefor

Abstract

A disc brake includes a caliper slidably supported by an adapter through a caliper supporting pin, each one end portion of a pair of friction pads being in contact with an arm portion of the adapter and each of the other end portions of the friction pads being in contact with the inside wall portion of the caliper whereby braking torque exerted under vehicle forwarding movement is directly received by the adapter and is received by the adapter through the caliper and the caliper supporting pin under vehicle reverse movement.

Claims

1. A disc brake assembly for a wheel of a vehicle having a non-rotatable part comprising:

a rotatable disc plate secured to said wheel for unitary rotation therewith;

first and second friction pads for frictional engagement with a first and second side of said rotatable disc plate, respectively;

an adapter secured to said non-rotatable part of the vehicle, said adapter including a base portion extending in the radial direction with respect to said disc and being secured to said non-rotatable part of said vehicle by bolts, said adapter further including a first arm portion including a first hole, said adapter further including a second arm portion including a second hole;

caliper means including an opening for allowing said pads to pass therethrough and a fluid actuator disposed therein for moving said first and second friction pads into engagement with said disc plate, said caliper means being movably supported by said adapter and said pads being supported by said caliper means via supporting members extending therebetween, wherein said caliper means includes a cylinder portion, a reaction portion and two connecting portions at the top of said caliper means and connecting said cylinder portion and said reaction portion;

wherein one of said connecting portions is provided with a recess opening to the outer circumferential surface of said disc, and wherein a second of said connecting portions is quadrilateral in section and is farther from said non-rotatable part of said vehicle than is said one of said connecting portions;

caliper supporting means secured to said caliper means and slidably supported by said adapter for guiding movement of said caliper means, said caliper supporting means comprising a pair of pins, one of said pins being positioned in, and protected by, said recess of said one of said connecting portions and in said first hole, the second of said pins being positioned radially below said cylinder portion of said caliper means and in said second hole;

said friction pads contacting said adapter at a first end portion thereof and directly contacting said caliper at a second end portion thereof opposite said first end portion, said second end portion comprising said first arm portion, to thereby receive braking torque exerted under a vehicle forward movement condition directly by said adapter and to receive braking torque exerted under a vehicle reverse movement condition by said caliper and said caliper supporting means.

2. A disc brake assembly as set forth in claim 1, further comprising an elastic boot member within which said pin member is disposed.