| 摘要 |
A housing is provided with an internal space for accommodating an insert and a cylindrical cap attachment part provided, at the distal end surface thereof, with an opening part communicating with the internal space. An inclined groove that is inclined from the distal end side to the proximal end side of the cap attachment part along the circumferential direction of the cap attachment part is provided on the outer circumferential surface of the cap attachment part. A cap fixing part for attaching a seal cap to the cap attachment part has a cap holding part for holding the outer peripheral surface of the seal cap and an elastic part connected to the cap holding part. The elastic part is provided with a protrusion that is fit into the inclined groove of the outer peripheral surface of the cap attachment part. The cap fixing part is attached to the cap attachment part so as to be capable of being rotated so that the protrusion slides along the inclined groove on the inside of the inclined groove and has springiness that, when the protrusion reaches the end point of the inclined groove, generates elastic force that pushes the cap holding part toward the opening part side so that the seal cap seals the opening part. |
