VIBRATION MOTOR

• Main Author: KANAI NAOKI
• Format: Patent
• Language: English; Japanese
• Published: 07.03.2016
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

PROBLEM TO BE SOLVED: To prevent positional displacement of a circuit board, warpage or floating from a base part in a vibration motor in a simple structure.SOLUTION: A vibration motor 1 includes: a base part 12 which is spread vertically to a central axis J1 in a vertical direction; a circuit board 13 that has flexibility and is disposed on the base part 12; a plurality of coils 14 which are fitted on the circuit board 13; a shaft 15 of which the lower end is fixed to the base part 12 and which protrudes upward along the central axis J1; a rotor holder 16 which is supported in a rotatable manner relatively to the shaft 15; a magnet 17 and an eccentric weight 18 which are fitted to the rotor holder 16; and a cover part 11 which covers upper sides and lateral sides of the rotor holder 16 and the eccentric weight 18 at least partially and is fixed to an upper end of the shaft 15 and an outer edge of the base part 12. An outer edge of the circuit board 13 includes a plurality of held portions 41 which are held between the base part 12 and the cover part 11.SELECTED DRAWING: Figure 5 【課題】振動モータにおいて、簡単な構造で、回路基板の位置ずれ、反りまたはベース部からの浮き上がりを抑制する。【解決手段】振動モータ１は、上下方向を向く中心軸Ｊ１に対して垂直に広がるベース部１２と、可撓性を有し、前記ベース部１２上に配置される回路基板１３と、前記回路基板１３上に取り付けられる複数のコイル１４と、前記ベース部１２に下端が固定され、前記中心軸Ｊ１に沿って上方へと突出するシャフト１５と、前記シャフト１５に対して回転可能に支持されるロータホルダ１６と、前記ロータホルダ１６に取り付けられる磁石１７と偏心錘１８と、前記ロータホルダ１６および前記偏心錘１８の上方および側方の少なくとも一部を覆い、前記シャフト１５の上端および前記ベース部１２の外縁部に固定されるカバー部１１と、を備える。前記回路基板１３の外縁部は、前記ベース部１２と前記カバー部１１との間に挟まれる複数の被挟持部４１を含む。【選択図】図５