Anti-rotation switch

The utility model discloses an anti-rotation switch, which comprises a cover plate, a base and a button, the cover plate is sleeved on the button, the base is internally provided with an accommodating cavity, a first pin, a second pin and an elastic sheet, the accommodating cavity is internally provided with a limiting notch, the button is provided with a limiting bulge, the limiting bulge extends into the limiting notch, and the elastic sheet is arranged on the base. The side wall of the limiting notch is located on the horizontal rotation track of the limiting protrusion, and the button drives the elastic piece to achieve contact or separation of the first pin and the second pin. The button is not easy to rotate, the structure is stable, and the direction of the sheath is ensured. 本实用新型公开了一种防旋转开关，其中，包括盖板、基座以及按钮，盖板套设在按钮上，基座内设有容纳腔室、第一引脚、第二引脚以及弹片，容纳腔室内设有限位缺口，按钮上设有限位凸起，限位凸起伸入至限位缺口内，限位缺口的边壁位于限位凸起的水平旋转轨迹上，按钮驱动弹片实现第一引脚与第二引脚的接触或分离；本实用新型按钮不易旋转、结构稳定、保证护套的方向。