Multi-disc brake

• US 4,598,799 A
• Filed: 11/27/1984
• Issued: 07/08/1986
• Est. Priority Date: 11/30/1983
• Status: Expired due to Fees

• Current Assignee: Societe Anonyme D.B.A.
• Original Assignee: Societe Anonyme D.B.A.
• Inventors: Thioux, Alain
• Primary Examiner(s): Stoner, Jr., Bruce H.
• Assistant Examiner(s): Gilday, Michael P.
• Application Number:
  US06/675,166
• Time in Patent Office: 588 Days
• Field of Search: 188/71.5, 188/71.4, 188/71.3, 188/71.2, 188/73.2, 188/218 XL, 188/18 A, 188/26, 188/58, 188/218 A, 192/106.1, 192/70.17
• US Class Current: 188/71.5
• CPC Class Codes: F16D 2055/0062 Partly lined, i.e. braking surface extending over only a part of the disc circumference
• CPC Class Codes: F16D 2065/1316 radially segmented
• CPC Class Codes: F16D 2065/1348 resilient
• CPC Class Codes: F16D 2065/1364 with relative movement axially
• CPC Class Codes: F16D 2065/1392 Connection elements
• CPC Class Codes: F16D 2065/1396 Ancillary resilient elements, e.g. anti-rattle or retraction springs
• CPC Class Codes: F16D 3/06 specially adapted to allow axial displacement
• CPC Class Codes: F16D 55/025 with two or more rotating discs at least one of them being located axially
• CPC Class Codes: F16D 55/224 with a common actuating member for the braking members
• CPC Class Codes: F16D 55/26 without self-tightening action
• CPC Class Codes: F16D 65/123 comprising an annular disc secured to a hub member; Discs characterised by means for mounting

Abstract

Multi-disc brake, of the type incorporating at least one first rotary disc firmly fixed to the wheel of the vehicle and a second rotary disc mounted so as to slide on a support component itself firmly fixed to the wheel, the driving in rotation of the second disc by the said support component being effected by the intermediary of complementary splines having a gear tooth profile. To overcome the undersirable effects of the tilting moment exerted on the sliding disc (2) by the thrust of the actuating cylinder (12), the invention is arranged to provide this disc with axial guiding projections (14) engaging in openings of corresponding shape (15) arranged in the other disc (1).

Claims

1. A multi-disc brake for a vehicle, comprising a first rotary disc firmly fixed at a radially inner portion to a wheel of the vehicle and a second rotary disc mounted radially inwardly so as to be capable of sliding in an axial direction on a radially inner support component which is also fixed firmly to the wheel, said second rotary disc and the radially inner support component including complementary-shaped splines having a gear tooth profile and meshed together to provide rotation of the second rotary disc by the support component while allowing axial displacement of the second rotary disc, a set of friction pads carrying friction linings for application against surfaces of the discs by a hydraulic cylinder disposed in a caliper, the caliper extending radially outwardly and over the discs and friction linings and the friction linings extending only over a limited annular sector of peripheral areas of the discs, axial projections circumferentially spaced-apart and extending from the second rotary disc, the projections extending into and engaging complementary-shaped openings in the first rotary disc, the projections located at a radially inner portion of the second rotary disc and adjacent the splines which cause the second rotary disc to rotate with the radially inner support component, the projections and openings having lunule-shaped cross-sections and the projections integral with the second rotary disc, the projections having only radially outer surfaces engaging corresponding wall surfaces of the respective openings, each projection having radial and circumferential clearances with the respective opening, and a device for generating torque disposed between a lateral flank of at least one of the projections and an opposite wall of the corresponding opening, the device urging circumferentially the projections and openings against one another in engagement and in a circumferential direction corresponding to transmission of braking torque.

2. The brake according to claim 1, wherein the device comprises an elastic solid compressed and inserted between the lateral flank and opposite wall.

3. The brake according to claim 2, wherein the elastic solid comprises two blocks made of elastomeric material and biased apart from one another by means of a peg.