Volvo Lastvagnar Ab

Ab Volvo

Johan Hulten

Ingemar Dagh

Mats Fagergren

Brake member where the occurrence of brake squeal when a fluctuating load is applied onto the brake member is reduced by way of a brake member or arrangement that includes a backing plate carrying a brake lining which exhibits at least one contact surface and side surfaces surrounding that contact surface and in which the side surfaces are connected to the contact surface and to the backing plate. The contact surface is adapted to exhibit an edge area surrounding the contact surface and in which at least a portion of the edge area exhibits a local deformation stiffness in a direction vertical to a plane through the contact surface which differs, at most, fifteen percent from the deformation stiffness in a central area in the interior of the contact surface. Utilization of this brake member is equally applicable in disc- and drum-style brake arrangements that can suffer from the occurrence of brake squeal when applying a fluctuating load onto the brake member.

Brake component, disc brake, drum brake, and method for manufacturing a brake component

Brake disc for a vehicle disc brake, comprising a radially inner hub portion (), intended to be non-rotatably joined to a wheel hub, and a surrounding, radially outer disc portion with opposing friction surfaces. The outer disc portion is formed by two disc elements () joined to the hub portion, and which are separated by spacers (), which define passages for cooling air and of which at least some () are in the form of fan vanes to generate an airflow from the passage inlets () at the outer periphery of the disc to the passage outlets () at the outer periphery of the disc.

Brake disc for a vehicle disc brake

Brake disc for a vehicle disc brake, comprising a radially inner hub portion () intended to be non-rotatably joined to a wheel hub and a surrounding, radially outer disc portion with oppositely facing friction surfaces. The outer disc portion is formed of two disc elements () joined to the hub portion, which are separated by spacers (), which define passages for cooling air.

The invention concerns a means ( ) for carrying a friction pad ( ), which is a part of a system for retarding rotational movement, e.g. at a rotating shaft. The carrier means ( ) is intended for distributing the press force from a brake mechanism via a contact surface to the friction pad ( ) mounted upon said means ( ). In its active position, the pad cooperates with the surface ( ) connected to the object of rotation wherein the carrier means ( ) with the friction pad ( ) is oriented extending along a sector of the rotation diameter of the contact surface. The carrier means ( ) is so designed that the value of the local natural angle frequency varies between one end of said sector of the rotation diameter of the contact surface and the other end of said sector.

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Gothenburg, Sweden

Johan Hulten