A protection device includes a cover body, a tongue piece, a combination structure, an actuation structure and a buckling structure. The combination structure enables the rear end of the cover body to be connected with the tail part of the tongue piece. The tongue piece is provided with a flexible part for maintaining the head part of the tongue piece in an opening position. The actuation structure is arranged on the tongue piece. When a butterfly needle retracts into the tongue piece, the actuation structure, as well as the tongue piece, moves from the opening position to a closing position. The buckling structure is arranged on the cover body or the tongue piece for preventing the tongue piece from being separated from the cover body. As a result, the needle head of the butterfly needle can be protected by the cover body and the tongue piece, so as to maintain the safety of the medical waste recycler and further provide the effects of labor-saving and automation.一種保護裝置,包括一蓋體、一舌片、一結合構造、一致動結構與一卡扣結構。該結合構造讓蓋體後端與舌片尾部聯結在一起。該舌片有一可撓部,使舌片頭部維持在一張開位置。該致動結構設在舌片,在一蝴蝶針具退入舌片時,該致動結構連帶舌片從張開位置來到一閉合位置。該卡扣結構設在蓋體或舌片,阻止舌片離開蓋體。如此,該蝴蝶針具的針頭被蓋體與舌片保護,維護醫療廢棄物回收者的安全,兼具省力與自動等效果。10‧‧‧蓋體11‧‧‧前端部12‧‧‧後端13‧‧‧側板14‧‧‧主翼片15‧‧‧容納部16‧‧‧卡榫17‧‧‧第一位階面18‧‧‧第二位階面19‧‧‧凸曲面20‧‧‧舌片21‧‧‧頭部22‧‧‧尾部23‧‧‧可撓部24‧‧‧側片25‧‧‧副翼片26‧‧‧結合孔27‧‧‧斜邊30‧‧‧帶31‧‧‧隆起部32‧‧‧孔44‧‧‧支柱46‧‧‧凹部48‧‧‧凸柱50‧‧‧凸緣52‧‧‧鉤部54‧‧‧卡掣塊56‧‧‧斜面60‧‧‧通道
