| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a speaker frame which is light, excellent in audio reproduction capability and suitable for installation in a vehicle such as an automobile, and an electrodynamic speaker using the same. <P>SOLUTION: In an electrodynamic speaker, a speaker frame is formed with a substrate having a core composed of resin foam and a surface material layer including a thermosetting resin and covering a surface of the core. The substrate comprises: an open hole penetrating the substrate in a front-back direction and covered its inner surface by the surface material layer; and a sub-frame fixing part fixing a sub-frame by including the open hole. A coupling member includes a screw penetrating the open hole of the sub-frame fixing part and a nut engaged with the screw. The sub-frame fixing part of the speaker frame is held tightly by causing the nut arranged on a front side of the sub-frame fixing part and the sub-frame arranged on a back side of the sub-frame fixing part to approach mutually by the screw. <P>COPYRIGHT: (C)2012,JPO&INPIT |
