Title:
CAPACITOR MICROPHONE UNIT AND MANUFACTURING METHOD THEREOF
Document Type and Number:
Japanese Patent JP2016072807
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To eliminate leakage of contact portions between an insulation seat and a stationary electrode that is disposed oppositely to a diaphragm, in a capacitor microphone unit where an edge of the stationary electrode is supported by the insulation seat.SOLUTION: A capacitor microphone unit 1 includes: a diaphragm 22 which is vibrated by sonic waves; a stationary electrode 24 which is disposed oppositely to the diaphragm; and an insulation seat 2 which supports the stationary electrode in contact with the edge of the stationary electrode. At an edge of the insulation seat, a ring-shaped projection 4 which protrudes towards the radially inside while being tapered closer to the stationary electrode and includes a ring-shaped distal end face 4a along the edge of the stationary electrode is formed. The edge of the stationary electrode is supported by the distal end face of the ring-shaped projection, and between the insulation seat and the stationary electrode, an adhesive 8 which is shrunk by being cured is provided on a tapered surface of the ring-shaped projection. By curing the adhesive, the contact portions between the insulation seat and the stationary electrode are bonded.SELECTED DRAWING: Figure 1
Inventors:
AKINO YUTAKA
Application Number:
JP2014200337A
Publication Date:
May 09, 2016
Filing Date:
September 30, 2014
Export Citation:
Assignee:
AUDIO TECHNICA KK
International Classes:
H04R19/01; H04R19/04; H04R31/00
Domestic Patent References:
| JP2011176612A | 2011-09-08 | |||
| JP2008113280A | 2008-05-15 | |||
| JP2012039445A | 2012-02-23 | |||
| JPH0654399U | 1994-07-22 | |||
| JP2000050386A | 2000-02-18 |
Attorney, Agent or Firm:
Kinoshita Shigeru
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