Vehicle brake pad and a production process thereof
AssigneeITT Italia S.r.l.
InventorsStefano Serra, Umberto Vignolo, Marco Terranova
Life of this patent
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Abstract
Various systems, devices, and methods for a vehicle smart brake pad comprising a sensor such as a force sensing device, and a production process thereof. For example, a production process of a vehicle brake pad can include the following steps in time sequence: applying an electrical circuit a support plate; screen printing on the electrical circuit of at least a first electrode; screen printing on the at least first electrode of a sheet of piezoelectric material; screen printing on the sheet of at least a second electrode; applying a friction pad on the support plate; and bulk polarizing the sheet of piezoelectric material by a supply of power to the at least first and second electrodes.
Claims20
A brake pad comprising:
- a backplate;
- a friction pad;
- and
- a force sensor between the backplate and the friction pad and configured to detect a force applied to the brake pad, the force sensor comprising:
- a sheet of piezoelectric material having a first face and a second face that is opposite the first face;
- a first electrode located on the first face of the sheet of piezoelectrical material;
- and
- a second electrode located on the second face of the sheet of piezoelectrical material, wherein the sheet of piezoelectric material is configured to be bulk polarized in-situ.
A method of manufacturing a brake pad, the method comprising:
- applying an electrical circuit to a backplate;
- applying a force sensor to the electrical circuit, wherein the force sensor comprises a first electrode, a sheet of piezoelectric material, and a second electrode, the first electrode on a first face of the sheet of piezoelectric material, and the second electrode on a second face of the sheet of piezoelectric material opposite the first face;
- applying a friction pad on an opposite side of the electrical circuit from the backplate;
- and
- bulk polarizing the sheet of piezoelectric material in situ.
Dependencies are inferred from the claim text.