Bendix Spicer Foundation Brake LLC

James Seaman

Manouchehr Sabeti

Kevin D Hantak

Kyle Swansegar

An arrangement and method for mounting a brake disc to an axle hub of a vehicle is provided. The arrangement includes wedge-shaped holes at an radially inner region of the brake disc, corresponding wedge-shaped key inserts, a retaining device such as a retaining ring, and mounting devices such as bolts or studs and nuts that pass through the retaining ring and keys to bias the keys against the axle hub. The circumferential sides of the wedge shapes are aligned with radial lines extending from the rotation axis of the axle hub. This arrangement and method provides a simple, robust and easily installed brake disc mounting that minimizes heat transfer between the brake disc and the axle hub and accommodates thermal expansion of the brake disc and the axle hub to minimize thermal expansion-induced stresses to the brake disc.

Brake disc mounting arrangement

A composite exciter ring for use in a vehicle brake system includes a base layer and a cover layer that is disposed on the base layer. The base layer is made of a ceramic material that insulates the cover layer from a heat source generated during brake activation. The cover layer is made of a plastic material and that defines openings. Each opening exposes a different part of the base layer. The ceramic material includes an additive infused therein. The additive has an effect on a magnetic field.

Thermally isolated composite exciter ring

An arrangement and method for mounting a brake disc to on axle hub of a vehicle is provided. The arrangement includes wedge-shaped holes at an radially inner region of the brake disc, corresponding wedge-shaped key inserts, a retaining device such as a retaining ring, and mounting devices such as bolts or studs and nuts that pass through the retaining ring and keys to bias the keys against the axle hub. The circumferential sides of the wedge shapes are aligned with radial lines extending from the rotation axis of the axle hub. This arrangement and method provides a simple, robust and easily installed brake disc mounting that minimizes heat transfer between the brake disc and the axle hub and accommodates thermal expansion of the brake disc and the axle hull to minimize thermal ex pans ion-induced stresses to the brake disc.

A brake disc arrangement to be located at an end of an axle of a vehicle driven by an electric motor includes a rotor assembly having multiple rotor assembly pieces joined together with fasteners, as well as an adaptor. The pieces mentioned include rotor sections defining an engagement portion having surfaces to be contacted by friction pads. The rotor assembly also includes an attachment base and an intermediate section, surrounding a rotor assembly axis of rotation, extending along the rotor assembly axis of rotation between the engagement portion and the attachment base. When assembled, the adaptor extends between a wheel hub base and the attachment base of the rotor assembly so that the rotor assembly is securable to the wheel hub. The adaptor defines an internal volume within which a housing for the electric motor and at least a portion of the wheel hub are receivable.

Multi-piece rotor for use with an electric wheel end drive motor

An internally ventilated brake disc with a disc coning reducing arrangement is provided in which temperature differences between inboard and outboard sides of the brake disc are minimized in order to reduce coning-causing differential thermal expansion. Between a radially inner region of a brake disc that includes brake disc-to-axle hub mounting features and a radially outer region the mass of the inboard side of the brake disc is distributed in a manner that reduces the amount of differential thermal expansion occurring during brake application between the inboard and outboard sides of the brake disc, thereby minimizing thermally-induced coning effects. The inboard side disc plate portion may having an increasing axial thickness in the direction from the radially outer region to the radially inner region, providing additional material mass to receive and dissipate heat energy received during a braking event.

Brake disc with coning-compensating arrangement

A system is provided for suppressing undesired brake pad motion during brake application, and for installing and removing brake pads utilizing the inventive arrangements. The brake pads and a carrier mount having complementary surface features that retain the brake pad when the brake pad is in its installed position, and a brake pad biasing structure that biases the brake pad in the radially outward direction to bias the contact faces of the mount horn and the brake pad against one another to suppress brake pad kick and vibration and related wear and component fatigue. The radially-outward biasing force may be applied by a spring-loaded plunger located within a bore of a mount horn of the brake pad carrier against a radially-inner surface of a portion of the brake pad extending laterally over the mount horn.

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Avon, OH, United States of America

James Seaman