SYRINGE-TYPE EJECTOR
FIG3 is a perspective view including a partial cross section showing an enlarged engagement portion of a barrel and a nozzle of the syringe type ejection device according to the first embodiment
FIG3 is a perspective view including a partial cross section showing an enlarged engagement portion of the barrel and the nozzle of the syringe type ejection device according to the first embodiment. As shown in FIG3, barrel 10 has a neck 13 having a small outer diameter. Large-diameter portion 11 is attached to neck 13. Neck 13 and large-diameter portion 11 are provided with a discharge space 11a. Since the plurality of hooks 34 are flexible (elastic), and engage large-diameter portion 11 in the state shown in FIG3, the elasticity of biasing portion 31 can be utilized to press first surface 11f against packing 60.
perspective view
30
nozzle
11
large-diameter portion
62
through hole
34
hooks hook
31
biasing portion
16
bore
61
convex portions
10
barrel
33
nozzle body
36
holding space
70
core
60
packing
32
through holes through hole
13
neck
['1. A syringe type ejection device comprising: a barrel; a nozzle disposed to face the barrel; and an annular packing interposed between the barrel and the nozzle, the barrel having a tip end portion provided with a discharge space for discharging liquid, the tip end portion including a first surface facing the nozzle, the nozzle being provided with a holding space for holding a core, the holding space being in communication with the discharge space, the nozzle including a second surface facing the first surface, the annular packing being provided to be in contact with the first surface and the second surface to enable movement of the liquid from the discharge space to the holding space, and the syringe type ejection device further comprising a biasing portion that biases the first surface and the second surface toward the annular packing.', '4. The syringe type ejection device according to claim 2 or 3, wherein the tip end portion has a large-diameter portion, and the biasing portion engages the large-diameter portion.', '5. The syringe type ejection device according to claim 4, wherein the biasing portion has a plurality of hooks that engage the large-diameter  portion.', '6. The syringe type ejection device according to claim 5, wherein the biasing portion is flexible, and a through hole extending through a thickness of the nozzle is provided in a portion of the nozzle in proximity of the biasing portion.']