US Patent 11175702 Scroll mouse

A scroll mouse includes a casing, a scroll wheel mouse and a waterproof module. The casing includes a first opening and a second opening. The scroll wheel includes a first rotation shaft and a second rotation shaft. The waterproof module includes a waterproof cap and a waterproof ring. A first gap between the first rotation shaft and the first opening is sealed by the waterproof cap. A second gap between the second rotation shaft and the second opening is sealed by the waterproof ring. Since the foreign liquid is prevented from entering an inner portion of the casing, the scroll mouse has the waterproof function.