An apparatus for autofocus having improved stopper structure

The utility model relates to an automatic focusing device with an improved stopper structure. The apparatus for auto-focusing having an improved stopper structure includes: a base frame configured toprovide an internal space; a bracket accommodated in the base frame to move in an optical axis direction; a plurality of balls located between the base frame and the bracket; and a stopper provided atan upper portion of the bracket and having a protruding shape to prevent the plurality of balls from deviating, the stopper allowing an uppermost ball among the plurality of balls to be partially exposed. 本实用新型涉及一种具有改进的止挡器结构的用于自动聚焦的设备。该具有改进的止挡器结构的用于自动聚焦的设备包括：基架，该基架构造成提供内部空间；托架，该托架容纳在所述基架中以沿光轴方向移动；多个滚珠，这些滚珠位于所述基架和所述托架之间；以及止挡器，该止挡器设置在所述托架的上部并且具有突出的形状以防止所述多个滚珠偏离，所述止挡器允许所述多个滚珠中的最上面的滚珠被部分地暴露。