| 摘要 |
PROBLEM TO BE SOLVED: To provide an accumulation type ejection nozzle and a syringe type ejector including the same, capable of making a content liquid from a syringe be ejected all at once after compressing the content liquid to a prescribed pressure, and excellent in assembling workability by reducing the number of components.SOLUTION: An accumulation type ejection nozzle includes: a cylindrical body 11 fitted on a tip part 2c of a syringe 2; and a piston 15 disposed inside the cylindrical body 11, and receiving a content liquid force-fed from the syringe 2 to advance. The piston 15 has: a peripheral wall 16 tightly closing the inner face of the cylindrical body 11, and formed with a through hole 19; a partition wall 18 closing the inside of the peripheral wall 16; and a bulging part 20 projecting in a tapered shape from the partition wall 18. The inside of the cylindrical body 11 has a partition 12 formed with an opening part A, and the partition 12 is formed with a plurality of projections 13 disposed around the opening part A and extending toward the piston 15. The inner face of the cylindrical body 11 is formed with a groove 14 communicating the content liquid from the through hole 19 with the opening part A when the piston 15 has pushed and opened the projections 13 and has advanced. |
