The present invention relates to an endoscope accessory assembly, mainly comprising a hollow tube body, a positioning ring and a sleeve. The hollow tube body includes an outer wall surface configured with a first and second screw segments which are arranged at interval. The positioning ring including an inner wall surface configured with a screw segment is capable of shifting along an axial direction of the hollow tube body. The sleeve includes an inner wall surface configured with a screw segment. When the sleeve is sleeved onto the hollow tube body, the screw segment of the sleeve is located between the first and second screw segments of the hollow tube body, the screw segment of the sleeve is abutted against the first screw segment of the hollow tube body, and the positioning ring is capable of pushing against the sleeve so as to fix the sleeve on the hollow tube body. Accordingly, the sleeve of the endoscope accessory assembly of the present invention can be accurately, rapidly and conveniently positioned on the hollow tube body.本發明有關於一種內視鏡配件組,其主要包括有一中空管體、一定位環以及一套筒。該中空管體之外壁面具有間隔設置之第一與第二螺紋段,該定位環之內壁面具有螺紋段且該定位環可沿該中空管體軸向位移,以及該套筒之內壁面具有螺紋段。當該套筒套設於中空管體時,該套筒之螺紋段位於中空管體之第一與第二螺紋段之間,該套筒之螺紋段係頂抵於中空管體之第一螺紋段,該定位環可推抵該套筒,而固定該套筒於中空管體上之位置。藉此,本發明之內視鏡配件組之套筒能夠準確、快速且方便地定位於該中空管體。1...內視鏡配件組10...中空管體11...第一開口12...第二開口13...第一螺紋段14...第二螺紋段15...中間段16...擋緣17...身部20...定位環21...螺紋段30...套筒31...開口33...螺紋段35...穿孔50...全反射鏡
