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US 2002/0170774 A1Published application
Speaker parts and method of manufacturing same
AssigneePioneer Corporation
InventorToshihiro Ishigaki
Life of this patent
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Abstract
A speaker edge is molded of a rubber material with 0.1 wt % to 10 wt % short fibers added to the rubber material which ranges from 1.0 mm to 10 mm in length and are resistant to softening by heat, in which the short fibers are oriented to the radial direction of the edge.
Claims10
A speaker part, comprising a rubber material with short fibers of from 1.0 mm to 10 mm in length added to the rubber material and orientated in a predetermined direction, for molding the speaker part.
A method of manufacturing a speaker part, comprising the steps of:
- a mixing process for mixing a rubber material with short fibers of from 1.0 mm to 10 mm in length added to the rubber material, by use of rollers to orient the short fibers in the sending direction of the rollers;
- a producing process for cutting the rubber material, mixed in said mixing process, in a direction approximately perpendicular to the orientation direction of the short fibers to produce a rubber compound having a predetermined width;
- and
- a pressing process for pressing the rubber compound produced in said producing process to stretch the rubber compound approximately in the orientation direction of the short fibers to mold the rubber compound into a required shape of the speaker part.
1 more element
Dependencies are inferred from the claim text.