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Thin loudspeaker

A loudspeaker, thin technology, applied in the direction of sensors, electrical components, etc., can solve the problems of size and performance constraints, and achieve the effect of suppressing rise, eliminating distortion, and good acoustic characteristics

Pending Publication Date: 2022-04-15
FOSTER ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] At the same time, in addition to miniaturization, the speaker 202 for automatic emergency notification needs to be thinner, and the size and performance are restricted.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0072] In order to develop a speaker for a vehicle emergency notification system that satisfies the above-mentioned specifications, the present inventors produced Figure 11 A preliminary prototype of the thin speaker shown.

[0073] Figure 11 Among them, 1' is a damper for vibratingly supporting the voice coil bobbin 4b. The inner peripheral end 1a' of the damper 1' is attached to the outer peripheral surface of the voice coil bobbin 4b with an adhesive, and the lower surface of the outer peripheral end 1g' of the damper 1' is attached to the right side of the thin bracket 10 in the drawing. upper surface.

[0074] The caliber of the thin bracket 10 of this preliminary prototype is formed, for example, to 40 mm, so as to be suitable for an emergency notification system of the eCall system. In addition, the overall height of the thin speaker S' is 10 mm. During operation, when the audio current flows in the voice coil 4a, the voice coil 4a placed in the magnetic field vib...

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Abstract

A curved portion that descends in an arcuate shape is formed in the damper inner peripheral portion, a corrugated portion is formed from an outer peripheral end of the curved portion to the damper outer peripheral portion, and a length of the damper inner peripheral portion is shorter than a length of the corrugated portion.

Description

technical field [0001] The present disclosure relates to a thin speaker, and more particularly, to a thin speaker suitable for use as a notification speaker in a next-generation automatic accident notification system (ACN: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Notification: Automatic Collision Not...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R9/02H04R9/04H04R9/06
CPCH04R9/02H04R2499/13H04R9/043H04R7/18H04R9/025
Inventor 市川浩平
Owner FOSTER ELECTRIC CO LTD
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