| 摘要 |
PROBLEM TO BE SOLVED: To provide a leaf spring of a voice coil motor having grooves with the same shape, and three-step linear folding sections formed so as to be mutually parallel, thereby achieving a structure for balancing an elastic force, good elasticity and a rapid recovery effect. SOLUTION: The blade spring includes a plate. The plate is provided with a central hole, and first, second, third and fourth grooves for surrounding a periphery of the central hole. Both end of the second and fourth grooves are located in the center of the first and third grooves. Both end of the first and third grooves are located in the center of the second and fourth grooves. Four elastic folding sections are formed, and distributed over four rounds. COPYRIGHT: (C)2007,JPO&INPIT
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