Progressively stamped clip-on noise damping shim for friction assembly, and method and apparatus for producing clip-on noise damping shim

a technology of friction assembly and noise damping shim, which is applied in the direction of mechanical equipment, manufacturing tools, shaping tools, etc., can solve the problems of shim subject to significant force, noise can be produced, and additional shim material is required for tabs, etc., to achieve the effect of improving noise damping shim

Inactive Publication Date: 2014-05-22
UTIL CANADA LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This method reduces production costs and time by integrating tab formation and shim body creation, resulting in a more efficient and cost-effective noise damping solution for friction assemblies.

Problems solved by technology

Due to the relative movement during the engagement of the friction materials and the rotor, squeal noise can be produced.
In this construction, the shim is subject to significant force between the friction assembly and the piston or caliper pushing the shim against the brake pad during the braking operation.
However, the provision of the tabs requires additional shim material.

Method used

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  • Progressively stamped clip-on noise damping shim for friction assembly, and method and apparatus for producing clip-on noise damping shim
  • Progressively stamped clip-on noise damping shim for friction assembly, and method and apparatus for producing clip-on noise damping shim
  • Progressively stamped clip-on noise damping shim for friction assembly, and method and apparatus for producing clip-on noise damping shim

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Embodiment Construction

[0024]Referring to FIGS. 1 to 3, a noise damping shim 10 according to an embodiment of the present invention is described. This embodiment describes a noise damping shim that is suitably clipped on a friction assembly of a disc brake for an automotive braking system. In a different embodiment, a noise damping shim of a different shape may be suitably used for a different type of a friction assembly.

[0025]The noise damping shim 10 has a shim body 20 and tabs 30. The noise damping shim 10 is clipped on a friction assembly (not shown) using the tabs 30 to provide a noise damping function when the friction assembly is in use. The shim body 20 has a predetermined shape suitable for the friction assembly. The shim body 20 typically has a generally flat shape.

[0026]Tabs 30 extend outwardly from the periphery 22 of the shim body 20. Typically, a number of tabs 30 are provided on a shim body 20 at locations that are strategically determined to minimize movements of the shim relative to the f...

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Abstract

A noise damping shim for a friction assembly is produced by a pre-slit step and a bend and blank step. The pre-slit step forms pre-slits in a shim material at locations where tabs of a noise damping shim are to be formed. The bend and blank step bends each of the tabs at a bent angle relative to the shim material while simultaneously blanking a shim body from the shim material to produce a noise damping shim having bent tabs extending outwardly from a periphery of the shim body.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a noise damping shim for a friction assembly, and more specifically, to a progressively stamped clip-on noise damping shim, and a method and apparatus for producing a clip-on noise damping shim.BACKGROUND OF THE INVENTION[0002]A typical brake system uses one or more friction assemblies. A friction assembly comprises a brake pad having a friction material mounted on a backing plate. A friction assembly is a replaceable element. For example, in a typical disc brake, a rotating disc or rotor rotates with a wheel of a vehicle. A pair of opposing friction assemblies, also referred to as brake pads, are composed of a friction surface supported by a metal backing plate and are positioned on opposite sides of the rotor such that both friction materials face to the rotor. Outside the friction assemblies are a piston and a corresponding caliper, respectively. When the brake is actuated and the piston and caliper are advanced closer ...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): F16D65/00
CPCB21D24/005B21D37/08B21D5/042Y10T29/49F16D65/0006
InventorLATIFI, M. REZAKRYSPIN, JERZY
OwnerUTIL CANADA LIMITED