| 摘要 |
PURPOSE: A mouse is provided to easily assemble the mouse and reduce a cost by simplifying a wheel structure, and to continuously keep a good sensitivity by minimizing the abrasion of serration when a wheel is operated. CONSTITUTION: A wheel button switch(123), a left and a right button switch(121,122), a light emitting element(124), and a light receiving element(125) are installed to an upper face of a PCB(Printed Circuit Board)(120) fixed to a main body(100). A cover(200) covers an upper part of the main body, and includes a right and a left button(202,204) matched with the right and the left button switch. The wheel(300) is placed between the light emitting element and the light receiving element. A wheel shaft(302) is extended to each side direction of a center of both faces. The serration(304) is formed to an inner circumference of one wheel shaft. Penetrating hole parts(306) and non-penetrating parts(308) are equally formed to the side face. A wheel base(140) is fixed to the upper face of the main body and supports one wheel shaft. A hanging projection(146) hung to the serration has elastic force by a tension rib(148). A spring(310) gives the elastic force in an upper direction to the wheel.
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