US 6,293,374 B1Granted

Drum brake seal structure for all-terrain vehicle wheel

AssigneesHonda Giken Kogyo Kabushiki Kaisha, Arai Seisakusho Co., Ltd.

InventorsHiroaki Tomita, Bunzo Seki, Akio Handa, Seiji Kurimoto, Eiji Katabami

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Abstract

A drum brake includes a brake drum attached to an axle, and a brake panel. The brake drum includes a disc portion and a cylindrical portion extending from an outer peripheral end portion of the disc portion towards the brake panel. On an outer peripheral end portion of the cylindrical portion, there is mounted a seal member. The brake panel includes an annular flat surface portion, and a cylindrical projecting portion projecting from an outer peripheral end portion of the annular flat surface portion towards the brake drum so as to surround the seal member. The seal member has plural resilient axial sealing lips and at least one resilient radial sealing lip. The axial sealing lips are in sealing contact with the annular flat surface portion, and the radial lip is in sealing contact with an inner peripheral surface of the cylindrical projecting portion. Even if the brake drum is axially displaced away from the brake panel due to accidental bending of the axle, the radial sealing lip remains sealingly contact with the inner peripheral surface of the projecting portion.

Claims2

Dependent claims

A drum brake seal structure for an all-terrain vehicle wheel, comprising:

a brake panel;
a drum including a disc portion and a cylindrical portion extending from an outer peripheral end portion of said disc portion towards said brake panel;
a seal member mounted on a mounting portion of an outer peripheral end portion of said cylindrical portion of said drum, said brake panel being disposed sidewardly of said cylindrical portion of said drum and having an annular flat surface portion and a cylindrical projecting portion projecting from an outer peripheral end portion of said annular flat surface portion axially of said drum;
said cylindrical projecting portion extending on a radially outward side of said seal member so as to substantially surround said mounting portion, said seal member being disposed between an inner circumferential surface of said cylindrical projecting portion and an outer peripheral end portion of said cylindrical portion and including plural sealing lips held in sealing contact with said brake panel, at least one of said sealing lips being in sealing contact with an inner circumferential surface of said cylindrical projecting portion.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 09/655,539Filed 6 Sep 2000
Priority: JP 11-28078130 Sep 1999
Granted: 25 Sep 2001
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

F16D 51/00
Brakes with outwardly-movable braking members co-operating with the inner surface of a
F16D 65/10
Braking members; Mounting thereof: drums for externally- or internally-engaging brakes
F16J 15/3456
Pressing means: without external means for pressing the ring against the face, e.g. slip-ring with a resilient lip
F16D 2051/005
Parts or details of drum brakes: protective covers

Family

No related US applications are recorded in the indexed filing history.

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