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Brake shoe

a technology for brake shoes and brake pedals, applied in brake types, friction linings, brake pedals, etc., can solve the problems of high dampening of humming, squeaking and crumpling noises, and achieve the effect of keeping the development of noise and the transmission of vibrations onto the steering wheel or the brake pedal continuously low

Inactive Publication Date: 2007-10-18
KURZ GERHARD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention provides a brake shoe that reduces noise and vibration during braking and steering. The brake shoe has an intermediate layer with a three-dimensional surface structure that improves the stiffness and dampening properties of the brake lining. The friction lining is soft and elastic in the tangential direction, reducing juddering and pulsation. The three-dimensional surface structure of the intermediate layer also affects the compressibility and dampening of the brake lining. The soft and highly dampening material of the intermediate layer can be used to adjust stiffness and dampening properties without changing the friction material. The three-dimensional surface structure of the intermediate layer can be oriented symmetrically or asymmetrically relative to the carrier plate. The method for manufacturing the brake shoe involves pre-molding the material of the intermediate layer and then finishing molding the friction lining and carrier plate. The brake shoe reduces noise and vibration during braking and steering.

Problems solved by technology

The influencing of the compressibility results in a high dampening of humming, squeaking and crumpling noises.

Method used

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Examples

Experimental program
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Effect test

first embodiment

[0044] a brake shoe 1, shown in FIG. 1, comprises a metallic carrier plate 2 having first arranged thereon an intermediate layer 4 functioning as a dampening layer between the friction lining 6 and the carrier plate 2.

[0045] The intermediate layer4 comprises, on the side thereof facing towards the friction lining 6, a three-dimensional surface structure 5 provided with projections 8 engaging the friction lining 6. The friction lining 6 is correspondingly adapted to the surface contour 5 of the intermediate layer 4 and comprises a friction material of the usual type.

[0046] In FIG. 1, the surface structure 5 of that side of the intermediate layer 4 which is facing towards the friction lining 6 is indicated by the interrupted line. Thus, the embodiment according to FIG. 1 presents a three-dimensional surface structure of the intermediate layer 4 which, when viewed in cross-section, has a wave shape. FIG. 3 is a sectional view taken along the line III-III in FIG. 1, from which it can b...

third embodiment

[0050]FIG. 4 shows a third embodiment comprising projections 8 having sinusoidal or triangular shapes as viewed in cross section, with the projections, in contrast to the embodiment according to FIG. 3, extending in a transverse direction relative to the radial axis of symmetry 10 of brake shoe 1. This can be best seen in FIG. 5 which is a sectional view taken along the line V-V in FIG. 4.

fourth embodiment

[0051] Illustrated in FIG. 6 is a fourth embodiment wherein the surface structure 5 extends at an inclination relative to the carrier plate 2, thus forming a wedge-shaped intermediate layer 4 with three-dimensional surface structure 5.

[0052] In this arrangement, the projections of the surface structure 5 can have any one of the various cross-sectional shapes illustrated in FIG. 11. The surface structure 5 can be inclined about one or two axes. For instance, the inclination can be adjusted relative to the radial axis of symmetry 10 and / or an axis which is orthogonal to this axis of symmetry 10 and parallel to the carrier plate 2.

[0053] The embodiment according to FIGS. 7 and 8 presents a surface structure 5 comprising dot-shaped projections 8″.

[0054]FIG. 7 is a sectional view taken along the line VII-VII in FIG. 8, and FIG. 8 is a sectional view taken along the line VIII-VIII in FIG. 7.

[0055] The embodiment according to FIG. 9 presents an asymmetrical arrangement of the projection...

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Abstract

In a brake shoe (1) comprising a carrier plate (2) having arranged thereon first a dampening and noise-reducing intermediate layer (4) and then a friction lining (6), it is provided that the intermediate layer (4), on the side thereof facing towards the friction lining (6), comprises a three-dimensional surface structure, and that the friction lining (6) on the carrier-plate side is adapted to the surface contour (5) of the intermediate layer (4).

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a divisional application of U.S. application Ser. No. 10 / 332,529 filed on Jul. 2, 2003 and now U.S. Pat. No. ______.BACKGROUND OF THE INVENTION [0002] The invention relates to a brake shoe. [0003] It is already known to arrange a dampening intermediate layer between a carrier plate and a friction lining. This intermediate layer has a uniform layer thickness of 3 mm, for instance. This intermediate layer is useful, e.g., for bonding the friction lining to the carrier plate with high strength. [0004] In known brake linings, undesired accompanying phenomena will occur during braking, depending on the wear condition of the brake shoe. With increased wear, for instance, brake shoes are known to contribute to a heightened generation of brake noises because the friction linings tend to become harder and lose compressibility with increased service life and thermal stress. For this reason, the friction linings will become les...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F16D69/00B29C43/14F16D65/092F16D69/04
CPCF16D69/04F16D2069/0491F16D2069/0441F16D2069/007
Inventor KURZ, GERHARDSCHNELL, WILFRIEDEICHNER, GEORGHOFFRICHTER, WOLFGANG
Owner KURZ GERHARD
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