发明名称 CASING STRUCTURE OF ACOUSTIC EQUIPMENT
摘要 <P>PROBLEM TO BE SOLVED: To prevent generation of chattering sound at the contact portion of the top and the bottom casing parts of the electronic musical instrument in which the casing of the musical instrument is constituted by the top and the bottom casing parts that are individually formed by synthetic resin or the like and to eliminate circuit failure caused by metallic dust or the like. <P>SOLUTION: An upper panel section 100 and a lower body back section 200 are fixed by fixing members 126 and 212 at the portions other than the peripheral portions of the sections 100 and 200. Moreover, a printed substrate 180 is fixed and projected toward the lower direction from a top surface plate 130 of the upper panel section 100 and is mounted on a base board 150 which covers the top surface of the printed substrate 180. Furthermore, top section side wall sections (120, 110a and 124) are projected toward the bottom from the back end section of the upper panel section 100 so as to form a U shaped groove 122 which is opened toward the bottom direction. A bottom back surface plate 210 is provided to project toward the upper direction from the peripheral section of the lower body back section 200 and is inserted into the U shaped groove in a non-contacting state. <P>COPYRIGHT: (C)2006,JPO&NCIPI
申请公布号 JP2006234865(A) 申请公布日期 2006.09.07
申请号 JP20050045076 申请日期 2005.02.22
申请人 YAMAHA CORP 发明人 HABA DAISUKE;SATO MASAO
分类号 G10H1/32;H04R1/02 主分类号 G10H1/32
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