Electro-Acoustic Converter and Electronic Device Using the Same
Electro-acoustic converter ( 35 ) such as a speaker includes frame ( 26 ) attached to magnetic circuit member ( 24 ), diaphragm ( 27 ) attached to frame ( 26 ), voice coil ( 28 ) attached to this diaphragm ( 27 ) and having a part of which disposed in magnetic gap ( 25 ) in magnetic circuit member ( 24 ), terminal ( 30 ) made by bending a metal plate and being brought into contact with a power supply unit of an electronic device in which electro-acoustic converter ( 35 ) is installed by utilizing a spring pressure of this metal plate, and stopper ( 29 ) restricting bending of the metal plate forming this terminal ( 30 ) within a reversible limit of its metal material.
1 . An electro-acoustic converter comprising:
a magnetic circuit member;
a frame attached to this magnetic circuit member:
a diaphragm attached to an outer periphery of this frame;
a voice coil attached to this diaphragm, a part of the voice coil being disposed in a magnetic gap in the magnetic circuit member;
a terminal coupled to a lead of this voice coil, the terminal being made by bending a single conductive metal plate, and the terminal being brought into contact with a power supply unit of an electronic device in which the electro-acoustic converter is installed by utilizing a spring pressure of this metal plate; and
a stopper provided on the magnetic circuit member, the stopper being configured with a protrusion made of a same material as the magnetic circuit member for restricting bending of the metal plate forming the terminal within a reversible limit of its metal material.
2 . The electro-acoustic converter of claim 1 , wherein the stopper is provided on a back of a yoke of the magnetic circuit member.
3 . The electro-acoustic converter of claim 2 , wherein the stopper is integrally formed with the yoke.
4 . The electro-acoustic converter of claim 1 , wherein the stopper is provided on a back of a lower plate of the magnetic circuit member.
5 . The electro-acoustic converter of claim 4 , wherein the stopper is integrally formed with the lower plate.
6 . The electro-acoustic converter of claim 1 , wherein the stopper is covered with an insulator.
7 . An electronic device in which the electro-acoustic converter of claim 1 is installed.
8 . An electronic device in which the electro-acoustic converter of claim 2 is installed.
9 . An electronic device in which the electro-acoustic converter of claim 3 is installed.
10 . An electronic device in which the electro-acoustic converter of claim 4 is installed.
11 . An electronic device in which the electro-acoustic converter of claim 5 is installed.
12 . An electronic device in which the electro-acoustic converter of claim 6 is installed.