JP2583067Y2 - Fluid dispense cap - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

[0002] The present invention relates to a fluid dispensing cap used by screwing a peripheral wall to a mouth and neck of a container body.

2. Description of the Related Art As shown in Japanese Utility Model Application Laid-Open No. 55-131962, a peripheral wall which is screwed from the outer peripheral edge of a cap top wall to the outer surface of a container body neck and neck is suspended, and a lower surface is engaged with the mouth and neck upper end surface. The top wall portion adjacent to the inside of the outer periphery of the cap top wall to be joined is opened to erect a nozzle, and the main portion of the top wall portion excluding the nozzle and the outer periphery is formed into a dome-shaped ridge that can be elastically deformed. A synthetic resin provided so as to pressurize the inside of the container by pushing the upper part of the dome-shaped protruding portion against its elasticity in the inverted or inclined state of the container body, and to discharge the fluid in the container from the nozzle by the pressurization. Fluid dispensing caps are known.

[0003]

As shown in FIG. 6, the cap has a dome-shaped ridge on a top wall portion between the nozzle 6 and an outer peripheral portion on the side opposite to the outer peripheral portion on the nozzle side. 7, the diameter of the dome-shaped ridge is extremely small as compared with the diameter of the cap top wall, and the outer periphery of the lower part of the dome-shaped ridge is formed in the inward direction formed by the upper part of the ridge. A resilient tubular wall for elastically restoring the pushing part 4c
Since it is necessary to use 4b, the diameter of the pushing portion 4c for actually pressurizing the inside of the container is further reduced, so that there is a disadvantage that the pressing effect is small. In order to eliminate such a defect, as shown in FIG. 5, a method of increasing the height of the dome-shaped protruding portion 7 can be considered. In this case, the pushing portion 4c of the repelling tubular wall portion 4b with respect to the repelling tubular wall portion 4b is used. The bending angle becomes large, so that the elasticity of the pushed-in portion tends to be impossible. As shown in FIGS. 7 and 8, a method in which the entire top wall portion surrounded by the outer peripheral portion 4 a of the cap top wall 4 is formed as a dome-shaped protruding portion is considered. As shown in FIG. 7, the nozzle 6 tilts when the push-in portion 4c is pushed down, so that the fluid ejecting direction becomes unstable.

The present invention eliminates the above-mentioned drawbacks and makes it possible to increase the diameter of the pushing portion at the upper part of the dome-shaped protruding portion as compared with the prior art, thereby enhancing the pressurizing effect in the container when the pushing portion is pushed down. This is what made it possible.

[0005]

In order to solve the problem, a peripheral wall 5 which is screwed from the outer peripheral edge of the cap top wall 4 to the outer surface of the mouth and neck of the container is suspended, and a central portion of the top wall is formed as a dome-shaped raised portion 7 which can be elastically deformed. In a fluid discharging cap, the nozzle 6 rises from a part of the cap top wall adjacent to the inside of the outer peripheral part 4a of the cap top wall 4 to be engaged with the upper end surface of the container body neck.
Almost the entire top wall portion with the nozzle 6 surrounded by the outer peripheral portion 4a is formed in the dome-shaped raised portion 7, and the lower end portion of the nozzle 6 and the outer peripheral portion 4a of the top wall adjacent to the lower end portion have a thick rigidity. It continued at the plate portion 8.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a first embodiment shown in FIGS. 1 and 2 will be described.

Reference numeral 3 denotes a fluid discharge cap, which is integrally formed of a synthetic resin material. The cap hangs down a peripheral wall 5 that is screwed from the outer peripheral edge of the top wall 4 to the outer surface of the mouth and neck. The outer peripheral portion 4a of the top wall 4 is formed as an inward flange portion to be placed on the upper end surface of the mouth and neck portion 2, and the nozzle 6 is formed from a part of the top wall portion inwardly adjacent to the outer peripheral portion 4a. Stand up. The entire top wall portion with the nozzle 6 surrounded by the outer peripheral portion 4a is a dome-shaped raised portion 7, and the lower end portion of the nozzle 6 and the outer peripheral portion of the top wall adjacent to the lower end portion are connected by a thick rigid plate portion 8. Was. The lower portion of the outer periphery of the dome-shaped raised portion 7 excluding the rigid plate portion is formed as a resilient tubular wall portion 4b that is thicker on the outer peripheral portion 4a side and becomes gradually thinner as it goes upward.

In the above configuration, as shown in the figure, the dome-shaped protruding portion excluding the rigid plate portion 8, the upright portion of the nozzle 6, and the resilient tubular wall portion 6a forms the pushing portion 4c.

Reference numeral 9 denotes a seal cylinder which is hung down from the inner edge of the outer peripheral portion 4a of the top wall and fitted to the inner surface of the mouth and neck portion 2.

In the second embodiment shown in FIGS. 3 and 4, the diameter of the dome-shaped protruding portion 7 is slightly smaller than that of the first embodiment described above. It rises from a part of the repelling tubular wall 4b formed by the lower part of the outer periphery of the protruding part 7, and the lower end of the nozzle and the inner edge of the outer part of the top wall are connected by a thick rigid plate part 8. .

[0011]

[Effects of the Invention] The present invention has the above-described configuration, and the entire outer wall 4a of the cap top wall to be engaged with the upper end surface of the container body neck portion 2 has a dome-shaped substantially entire top wall portion with the nozzle 6. Since a thick rigid plate portion 8 is used as the raised portion 7 and the lower end portion of the nozzle 6 and the outer peripheral portion of the top wall adjacent to the lower end portion are continuous with each other, the outer peripheral lower portion of the dome-shaped raised portion 7 excluding the rigid plate portion 8 Form the resilient tubular wall portion 4b, and thus the tubular wall portion 4b
The diameter of the pushing portion 4c formed by the dome-shaped protruding portion surrounded by can be made larger than before, so that pressurizing the inside of the container by pushing down the pushing portion 4c facilitates the fluid in the container. Can be easily poured. In addition, since the lower end of the nozzle 6 and the outer peripheral portion of the top wall adjacent to the lower end are connected by the thick rigid plate portion 8, the nozzle 6 tilts when the pressing portion 4c is pressed down, so that the fluid is discharged. The direction is not uncertain.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a cap of the present invention.

FIG. 2 is a plan view of a cap.

FIG. 3 is a longitudinal sectional view of a cap according to a second embodiment of the present invention.

FIG. 4 is a plan view of the cap.

FIG. 5 is a longitudinal sectional view of a conventional cap.

FIG. 6 is a plan view of the cap of FIG. 5;

FIG. 7 is a longitudinal sectional view of another conventional cap.

8 is a plan view of the cap of FIG. 7;

[Explanation of symbols]

 3 ... Cap 4 ... Top wall 4a ... Outer periphery 4b ... Repelling tubular wall 4c ... Push-in part 7 ... Dome-shaped protruding part 8 ... Rigid plate part

Claims (1)

(57) [Scope of request for utility model registration] 1. A peripheral wall 5, which is screwed from an outer peripheral edge of a cap top wall 4 to an outer surface of a container body neck portion, is suspended, and a central portion of the top wall is formed into an elastically deformable dome-shaped protruding portion 7, and a container body mouth neck portion. In the fluid discharging cap in which the nozzle 6 rises from a part of the cap top wall adjacent to the inside of the outer periphery 4a of the cap top wall 4 to be engaged with the upper end surface of the cap, the nozzle 6 surrounded by the outer periphery 4a is provided. Of the nozzle 6 and the outer peripheral portion 4a of the top wall adjacent to the lower end portion are connected by a thick rigid plate portion 8. And fluid ejection cap.