JPS5718199A - Loudspeaker - Google Patents

Loudspeaker

Info

Publication number
JPS5718199A
JPS5718199A JP9275280A JP9275280A JPS5718199A JP S5718199 A JPS5718199 A JP S5718199A JP 9275280 A JP9275280 A JP 9275280A JP 9275280 A JP9275280 A JP 9275280A JP S5718199 A JPS5718199 A JP S5718199A
Authority
JP
Japan
Prior art keywords
bobbin
plate
adhere
pole piece
lower plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9275280A
Other languages
Japanese (ja)
Inventor
Isao Kito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9275280A priority Critical patent/JPS5718199A/en
Publication of JPS5718199A publication Critical patent/JPS5718199A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit

Abstract

PURPOSE:To raise an assembling accuracy so that a radiation surface of a sound wave becomes flat, by inserting a pole piece into a round hole which has been provided in the center of a lower plate, from the bottom of a magnetic circuit, and fixing the pole piece and the lower plate, in a dynamic loudspeaker. CONSTITUTION:A frame 11 is installed to a magnetic circuit assembly consisting of a lower plate 1, a magnet 3 and an upper plate 4, and an assembling jig 13, and a voice coil bobbin assembly consisting of a voice coil 7 and a bobbin 6 are inserted. Subsequently, a damper 5 is inserted into a prescribed position, and the bobbin 6 and the damper 5 are made to adhere. Moreover, a diaphram to which an edge 10 has been made to adhere in advance is inserted into the bobbin 6, and the diaphragm 8 and the bobbin 6, and the edge 10 and the frame 11 are made to adhere, respectively. After an adhesive agent of each part has been hardened, the assembling jig 13 is drawn out from the plate 1, a pole piece 2 is inserted from the rear of the plate 1, and each of them is fixed with a screw. In this way, the respective component parts can be assembled in order at a prescribed position.
JP9275280A 1980-07-09 1980-07-09 Loudspeaker Pending JPS5718199A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9275280A JPS5718199A (en) 1980-07-09 1980-07-09 Loudspeaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9275280A JPS5718199A (en) 1980-07-09 1980-07-09 Loudspeaker

Publications (1)

Publication Number Publication Date
JPS5718199A true JPS5718199A (en) 1982-01-29

Family

ID=14063142

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9275280A Pending JPS5718199A (en) 1980-07-09 1980-07-09 Loudspeaker

Country Status (1)

Country Link
JP (1) JPS5718199A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6071275A (en) * 1983-09-28 1985-04-23 Toshiba Corp Image output device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6071275A (en) * 1983-09-28 1985-04-23 Toshiba Corp Image output device
JPH0254789B2 (en) * 1983-09-28 1990-11-22 Tokyo Shibaura Electric Co

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