| 摘要 |
PROBLEM TO BE SOLVED: To provide the substrate mounting structure of a vibration motor in which self alignment is carried out as cream solder melts even if there is a gap in alignment of the flat footprint of a metal holder frame and a bonding pattern at the time of automatic mounting. SOLUTION: The substrate mounting structure comprises a vibration motor 1 having a metal holder frame 20 to which a motor case 11 is fitted and a pair of external terminal pieces 31 and 32 fixed to a resin end lid 30, and a printed wiring board 2 having a bonding pattern 41 of the shape symmetric for the centerline L and overlapping the flat footprint 23 of the metal holder frame 20 and power supply patterns 42 and 43 contiguous to the bonding pattern 41 and overlapping the external terminal pieces 31 and 32 of symmetric arrangement for the centerline L correspondingly. The metal holder frame 20 has front protrusions 23b, 23c and a rear protrusion 23d on the flat footprint 23, and the bonding pattern 41 has front extension pattern surfaces 41b, 41c where the front protrusions 23b, 23c overlap the main bonding pattern surface 41a correspondingly, and a rear extension pattern surface 41d overlapping the rear protrusion 23d. COPYRIGHT: (C)2009,JPO&INPIT
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