JPH0389498U

JPH0389498U -

Info

Publication number: JPH0389498U
Application number: JP14988789U
Authority: JP
Priority date: 1989-12-26
Filing date: 1989-12-26
Publication date: 1991-09-12

Description

[Brief explanation of the drawing]

第１図は、本考案の第１実施例を示す一部破断
斜視図、第２図は、同実施例のコイルを示す斜視
図、第３図は、第１図−線に沿う断面図、第
４図は、本考案の第２実施例を示す一部破断斜視
図、第５図は、第４図−線に沿う断面図、第
６図は、第２実施例の取り付け状態における正面
図、第７図は、本考案の第３実施例を示す第４図
−線に相当する断面図、第８図は、従来のピ
ツクアツプ装置を示す断面斜視図、第９図は、他
の従来のピツクアツプ装置を示す一部破断斜視図
、第１０図は、第９図−線に相当する弦振動
時におけるデツドポイントの発生状態を示す説明
図である。１０……ピツクアツプ装置、１１……ピツクア
ツプ本体、１２……ケーシング、１３……永久磁
石、１６，２６……コイル、２１……タツピング
ビス、２３……上部フランジ、２４……下部フラ
ンジ。 FIG. 1 is a partially cutaway perspective view showing a first embodiment of the present invention, FIG. 2 is a perspective view showing a coil of the same embodiment, and FIG. 3 is a sectional view taken along the line of FIG. 1. Fig. 4 is a partially cutaway perspective view showing the second embodiment of the present invention, Fig. 5 is a sectional view taken along the line of Fig. 4, and Fig. 6 is a front view of the second embodiment in the installed state. , FIG. 7 is a cross-sectional view taken along the line of FIG. 4 showing a third embodiment of the present invention, FIG. 8 is a cross-sectional perspective view showing a conventional pickup device, and FIG. 9 is a cross-sectional view of another conventional FIG. 10, which is a partially cutaway perspective view showing the pickup device, is an explanatory diagram showing the state in which a dead point occurs during string vibration, which corresponds to the line in FIG. 9. DESCRIPTION OF SYMBOLS 10...Pickup device, 11...Pickup main body, 12...Casing, 13...Permanent magnet, 16, 26...Coil, 21...Tapping screw, 23...Upper flange, 24...Lower flange.

Claims

[Claims for Utility Model Registration] (1) A permanent magnet that forms a magnetic field around it, and the vibration of a string within the magnetic field formed by this permanent magnet is converted into an electrical signal by changes in the magnetic flux of the magnetic field and output. What is claimed is: 1. An electromagnetic pickup device having a coil, characterized in that the coil is directly wound around the permanent magnet. (2) Claim 1, wherein the coil has a rectangular cross section and has an insulating film formed on its surface.
The electromagnetic pickup device described. (3) The electromagnetic pickup device according to claim 1, wherein the permanent magnet is integrally provided with an upper flange extending at least in the string tensioning direction at a portion facing the string. . (4) The permanent magnet is further provided with a lower flange extending at least in the direction in which the string is stretched, at a portion facing the upper flange;
4. The electromagnetic pickup device according to claim 3, wherein the coil is wound between both lower flanges. (5) The lower flange is provided with a mounting hole, and a fixing member for fixing the permanent magnet to the stringed instrument is inserted into the mounting hole, and the fixing member is made of a magnetic material. An electromagnetic pickup device according to claim 4. (6) covering the upper flange and the coil;
6. The electromagnetic pickup device according to claim 4, further comprising a casing made of a box having an open bottom, the bottom opening of the casing being closed by the lower flange.