Anti-squeal shim
AssigneeTrelleborg Sealing Solutions Kalmar AB
InventorsJonas Karl-Gustaf Andersson, Nils Marcus Olsson, Lars Christian Dahl
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Abstract
An anti-squeal shim includes at least a first metal layer and an elastomer layer that is bonded to the first metal layer. The at least first metal layer is configured as a first electrode for electrical connection to a resistance measuring system, and the elastomer layer is configured with structural spatial features that enable the elastomer layer to obtain a reduced thickness when subjected to a mechanical force in a direction perpendicular to the elastomer layer.
Claims6
An anti-squeal shim, comprising:
- a metal layer;
- and
- an elastomer layer that is bonded to the metal layer;
- wherein the metal layer is configured as a first electrode electrically connectable to a resistance measuring system;
- and
- wherein the elastomer layer is configured with structural spatial features that comprise a plurality of hollows containing a gas that is a remnant of an evaporated liquid, the hollows being distributed inside the elastomer layer and configured to enable the elastomer layer to obtain a reduced thickness (T1) when being subject to a mechanical force (F) in a direction perpendicular to the elastomer layer.
A method of manufacturing anti-squeal shims, comprising the steps of:
- producing an elastomer sheet from an elastomer mixture, the elastomer sheet comprising structural spatial features that comprise a plurality of hollows inside the elastomer sheet that contain a gas that is a remnant of an evaporated liquid;
- bonding a metal sheet to the elastomer sheet;
- and
- dividing the bonded metal sheet and elastomer sheet into individual anti-squeal shims, each of the anti-squeal shims comprising a metal layer and an elastomer layer;
- wherein the metal layer of each anti-squeal shim is configured as an electrode that is electrically connectable to a resistance measuring system.
A brake system, comprising:
- a caliper;
- a brake pad assembly operably attached to the caliper, the brake pad assembly comprising:
- a brake pad;
- and
- an anti-squeal shim attached to the brake pad, the anti-squeal shim comprising:
- a metal layer;
- and
- an elastomer layer that is bonded to the metal layer;
- wherein the metal layer is configured as a first electrode electrically connectable to a resistance measuring system;
- and
- wherein the elastomer layer is configured with structural spatial features that comprise a plurality of hollows containing a gas that is a remnant of an evaporated liquid, the hollows being distributed inside the elastomer layer and configured to enable the elastomer layer to obtain a reduced thickness (T1) when being subject to a mechanical force (F) in a direction perpendicular to the elastomer layer;
- and
- a brake disk positioned to be engaged by the brake pad assembly.
An anti-squeal shim, comprising:
- a metal layer;
- and
- an elastomer layer that is bonded to the metal layer;
- wherein the metal layer is configured as a first electrode electrically connectable to a resistance measuring system;
- and
- wherein the elastomer layer is configured with structural spatial features that comprise a plurality of hollows distributed inside the elastomer layer, the hollows comprising microspheres of a polymeric material, the hollows being configured to enable the elastomer layer to obtain a reduced thickness (T1) when being subject to a mechanical force (F) in a direction perpendicular to the elastomer layer.
Dependencies are inferred from the claim text.