Micro speaker
AssigneeSound Solutions International Co., Ltd.
InventorsSusanne Windischberger, Maria Papakyriacou
Life of this patent
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Abstract
A speaker comprises a permanent magnet (2) and a coil (8) positioned around the permanent magnet (2) and attached to a membrane (10), wherein the membrane comprises an elastomer of thickness less than 0.3 mm and with a Young's modulus below 100 MPa.
Claims16
A speaker comprising a permanent magnet, and a coil positioned around the permanent magnet and attached to a membrane, wherein the membrane is a single layer monolithic structure formed from an elastomer of thickness less than 0.3 mm and with a Young's modulus below 100 MPa.
A method of manufacturing a speaker, comprising:
- forming a membrane from an elastomer, wherein the membrane is a single layer monolithic structure and has thickness less than 0.3 mm and a Young's modulus below 100 MPa;
- attaching a coil to the membrane;
- and
- assembling the speaker by suspending the membrane, such that the coil is positioned around a permanent magnet.
A micro speaker comprising:
- a body portion comprising a frame and a lid, the lid having an opening;
- a magnetic circuit comprising a yoke, a permanent magnet contained within the yoke, and an upper plate attached to an upper surface of the permanent magnet;
- and
- a vibration system, comprising:
- a voice coil fitted into a gap between the permanent magnet and an inner surface of the yoke;
- and
- a speaker membrane attached to the voice coil and affixed to the frame, the speaker membrane formed from a single layer elastomer having a thickness less than 0.3 mm and a Young's modulus below 100 MPa.
Dependencies are inferred from the claim text.