JP4535323B2 - Plastic cap - Google Patents

Description

  The present invention relates to a synthetic resin cap with a sealing mechanism.

The upper surface of the peripheral wall to be fitted to the outer surface of the container body neck is closed with a lid body that hangs the cylinder from the outer periphery of the top plate, the rear upper end of the peripheral wall and the lower rear end of the cylinder are hinged, and It is possible to open and close the lid centering on the hinge by the finger-hanging ridge, and to peel off the rear end of the rod-shaped protrusion protruding backward from the rear surface of the vertical plate to the peripheral wall portion below the finger-hanging ridge A synthetic resin cap is known in which the upper end of the vertical plate and the front end portion of the finger-hanging ridge are meshed with each other, and the lid cannot be opened or closed unless the vertical plate is removed ( Patent Document 1)
Japanese Utility Model Publication 8-275

  In the above conventional example, a vertical plate is used as a sealing body, but the sealing body is separately molded with respect to the cap and bonded to the peripheral wall of the cap.

  According to the present invention, the entire cap can be formed integrally, and the outer surface of the sealing portion is covered with a cover plywood to improve the appearance, and dust adheres to the upper surface of the engaging ridge that protrudes from the front surface of the cap peripheral wall as a part of the sealing mechanism. Thus, the cap appearance is not impaired.

As a first means , the outer peripheral wall 13 of the inner plug 11 with an opening mechanism that seals the container body mouth portion is fitted to the outer surface of the container body neck portion 2, and the lower end and the inner surface of the outer peripheral wall 13 are connected to the upper portion. A cap 21 in which the upper surface of the peripheral wall 22 on which the outer peripheral wall 13 is loosely fitted is closed with a lid body 25 that hangs the cylinder 27 from the outer periphery of the top plate 26, and the upper rear surface of the peripheral wall 22 and the lower rear surface of the cylinder 27 are connected by a hinge 20. The engaging ridge 24 is projected forward from the front surface of the peripheral wall 22, and the covering ply 30 covering the front surface of the engaging ridge is weakened for breaking the upper and left and right side edges of the covering ply to the front surface of the cylinder 27. The upper surface of the second engaging protrusion 31 that is connected to and suspended from the wires 29 and 32 and is laterally provided on the inner surface of the cover plate is engaged with the lower surface of the engaging protrusion 24, and the second engaging protrusion 31 The lower covering plate part was used as a covering part 33 for peeling the covering plate.

  As a second means, the first means is provided and the front upper end portion of the lid cylinder 27 projects forward to form a lid opening finger hanging protrusion 28, and the front edge of the finger hanging protrusion The upper edge of the covering ply 30 was suspended through a weakening line 29 for breaking.

And a third means, to the container body opening neck 2 an outer surface, the outer peripheral wall 13 of the opening mechanism with inner plug 11 to seal the container body mouth fitted, and connects the outer peripheral wall 13 the lower end and the inner surface The upper surface of the peripheral wall 22 in which the outer peripheral wall 13 is loosely fitted into the upper portion is closed with a lid 25 that hangs the cylinder 27 from the outer periphery of the top plate 26, and the upper part of the rear surface of the peripheral wall 22 and the lower part of the rear surface of the cylinder 27 are connected to the hinge 20 The engaging ridge 24 protrudes forward from the front surface of the peripheral wall 22 and the covering ply board 30 covering the front surface of the engaging ridge is broken to the front surface of the cylinder 27. The lower end of the engaging protrusion 24 and the lower surface of the engaging protrusion 24 are brought into contact with the lower end of the engaging protrusion 24 into the through-hole 34 formed in the cover plywood. The covered plywood portion below the through-hole 34 was used as a knob 33 for peeling the covered plywood.

As a fourth means, a cylindrical part that has the first, second, or third means described above and that stands upward on the outer peripheral portion of the upper wall of the inner plug 11 placed on the container body mouth part. At the same time, the lower inner surface of the lid cylinder 27 was fitted into the upper outer surface of the cylindrical portion in an airtight manner.

In the present invention, the cover plate 30 that hangs down by connecting the upper edge and both the left and right sides to the front surface of the lid cylinder covers the engagement protrusion 24 that protrudes from the front surface of the peripheral wall, and is thus a cap with a sealing mechanism. Regardless of the fact, the appearance can be improved, and the engaging ridge is covered with the covering ply board 30, so that dust does not adhere to the upper surface of the engaging ridge and it does not become unsightly. Also because the a knob portion 33 of the plywood peeling covering the covering plywood portion of the hole down, it is easy closure release by the covering plywood removed. Further, the cap 21 and the inner plug 11 can be integrally molded, and the cost of molding them with a synthetic resin material can be reduced.

By using the second means , it is convenient that the lid-opening finger-hanging ridge 28 and the upper end of the cover plate 30 can be used together, and the appearance of the front portion of the cap can be improved.

By using the third means , the sealing mechanism can be simplified.

By using the fourth means, it is possible to easily and reliably open and close the cap lid body and to prevent moisture and the like from entering the cap.

  In the following, the first embodiment shown in FIGS. 1 to 3 will be described. A concave groove 3 is provided at the upper part of the outer surface of the mouth and neck, and a protrusion 4 is provided below the concave groove.

   11 is a known plug with a pull ring. The outer peripheral wall 13 suspended from the outer periphery of the top plate 12 is fitted to the upper outer surface of the container body neck 2 and the lower surface of the outer periphery of the top plate is placed on the upper end of the neck. At the same time, a seal cylinder 14 suspended from the inside of the placement portion is fitted to the inner surface of the mouth neck. From the top surface of the top plate portion above the seal tube, a nozzle tube 15 with its upper end expanded upward and outward is erected, and the top plate portion surrounded by the lower end of the nozzle tube is provided with a groove 16 around the lower surface of the outer periphery of the portion. A connecting rod 18 provided with a pull ring 17 at the upper end from a part of the outer periphery is erected, and the weakened portion above the groove is broken by pulling up the pull ring so that a spout can be formed. The outer peripheral portion of the top plate rises as a cylindrical portion 19, and a concave portion is provided around the upper outer surface of the cylindrical portion.

  Reference numeral 21 denotes a cap, which is integrally formed with the inner plug 11 in the illustrated example. 22 is a peripheral wall of the cap. The inner peripheral wall 13 is loosely fitted into the upper part of the peripheral wall, and the lower end of the outer peripheral wall and the inner surface of the peripheral wall are connected at approximately equal intervals by a plurality of connectors 23. It is made to fit in the upper surface outer peripheral part of the protrusion 4 of the neck outer surface. The peripheral wall 22 has a lower front portion (left side in the figure), and an engaging protrusion 24 is horizontally provided at the upper end of the front portion so as to protrude forward.

  Reference numeral 25 denotes a lid that opens and closes the upper surface of the peripheral wall. The cylinder 27 is suspended from the top plate 26, and the lower inner surface thereof is fitted to the outer surface of the cylindrical portion 19 of the previously described plug. The cylindrical lower portion has a large inner diameter, and a protrusion provided around the inner surface of the large inner diameter portion is fitted into the concave portion of the outer surface of the cylindrical portion. Further, the front part of the cylinder is made to hang down below the rear part so as to be in contact with the upper end of the front part of the lower peripheral wall 22. The upper end of the rear portion (right side of the figure) of the cap peripheral wall 22 and the lower end of the rear portion of the cylinder 27 are connected by a hinge 20.

  The upper end of the front portion of the tube 27 is projected forward to form a finger-hanging ridge 28 for opening and closing the lid, and the covering plate 30 is suspended from the front end of the ridge through a weakening line 29 for breaking. The covering plate has a second engaging protrusion 31 on the inner surface of the lower part, and the second engaging protrusion is engaged with the lower surface of the engaging protrusion 24 at the upper end of the front surface of the peripheral wall 22. Further, the left and right side edges of the cover plate 30 are connected to the outer surface of the cylinder 27 via a breaking weakening line 32, and the left and right lower portions of the cover plate are suspended downward to form a knob 33 for peeling the cover plate.

  4 to 6 show the second embodiment, and FIGS. 7 and 8 show the third embodiment. In these embodiments, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted. Only different parts will be described.

  In the second embodiment, as shown in FIG. 4, the upper end of the covering ply 30 is suspended from the substantially middle part of the lid cylinder 27.

  In the third embodiment, as shown in FIG. 7, a through hole 34 for fitting the engagement protrusion 24 is formed in the covering plate 30 instead of the second engagement protrusion.

  The cap of each of the above embodiments is integrally molded with a synthetic resin material in the lid 25 open state, the lid 25 is closed, the lower inner surface of the cylinder 27 is fitted to the outer surface of the cylindrical portion 19, and the second engagement The protrusion 31 is engaged with the lower surface of the engagement protrusion 24, and the engagement protrusion 24 is fitted into the through hole 34.

  When opening the lid, the cover plate 30 is peeled off by pulling the knob 33 upward and outward, and the lid is opened by pushing the upper front end of the cylinder upward and rearward. Open.

  In each of the above embodiments, the inner plug 11 and the cap 21 are integrally molded, but the cap peripheral wall 22 may be fitted to the outer surface of the outer peripheral wall 13 of the inner plug, and the inner plug 11 may be separated. There is no need to have a pull ring. For example, a pouring hole is made in the center of the top plate of the inner plug, and the plug is suspended from the lid top plate so that the plug opens and closes the pouring hole by opening and closing the lid. It may be provided. It is also conceivable that the inner peripheral wall of the inner plug and the peripheral wall of the cap are integrated into one peripheral wall. It is also possible to open and close the container body mouth portion with only the lid without providing the inner stopper.

It is sectional drawing shown in the state which fitted this invention cap to the container body opening neck part. 1 is a perspective view of the cap. 2 is a perspective view showing a state in which the cover plate is removed from the cap. It is sectional drawing of this invention cap shown in 2nd Embodiment. 4 is a perspective view of the cap. 5 is a perspective view showing the cover plate removed from the cap. It is sectional drawing of the cap shown in 3rd Embodiment. 7 is a perspective view of the cap.

Explanation of symbols

11 Inner plug 13 Outer wall
19 Tube 20 Hinge
21 Cap 22 Perimeter wall
23 Connector 24 Engaging protrusion
25 Lid 27 Tube
28 Fingering ridge 29 Weakening line
30 Covering ply 31 31 Second engaging protrusion
32 Weakened wire 33 Knob
34 Through hole

Claims (4)

The outer wall 13 of the inner plug 11 with an opening mechanism that seals the container body mouth is fitted to the outer surface of the container body neck 2 and the lower end and the inner surface of the outer wall 13 are connected to play the outer wall 13 into the upper part. A cap 21 in which the upper surface of the fitted peripheral wall 22 is closed with a lid body 25 that hangs a cylinder 27 from the outer periphery of the top plate 26, and the upper rear surface of the peripheral wall 22 and the lower rear surface of the cylinder 27 are connected by a hinge 20, (22) The front surface of the engagement protrusion 24 is projected from the front surface of the engagement protrusion 24, and the covering ply board 30 covering the front surface of the engagement protrusion is formed. The upper surface of the second engaging protrusion 31 that is horizontally connected to the inner surface of the covering plate is engaged with the lower surface of the engaging protrusion 24, and the covering plate is below the second engaging protrusion 31. synthetic resin cap, characterized in that the knob portion 33 for said cover plywood peeled portion. The upper end of the front surface of the lid cylinder 27 projects forward to form a lid-opening finger-hanging ridge 28, and the upper edge of the covering ply 30 is suspended from the front edge of the finger-hanging ridge via a breaking weakening line 29. The synthetic resin cap according to claim 1 , wherein the synthetic resin cap is provided. The outer wall 13 of the inner plug 11 with an opening mechanism that seals the container body mouth is fitted to the outer surface of the container body neck 2 and the lower end and the inner surface of the outer wall 13 are connected to play the outer wall 13 into the upper part. the fit is not a peripheral wall 22 top, closed by a lid 25 hanging down the cylinder 27 from the top plate 26 periphery, a cap and a plane upper and cylinder 27 rear lower after the peripheral wall 22 hinge 20 connects, the peripheral wall 22 front The projecting ridge 24 is protruded forward from the cover projection plate 30 covering the front surface of the engagement projecting strip, and the upper edge and the left and right side edges of the cover ply plate are connected to the front surface of the cylinder 27 via the breaking weakening lines 29 and 32. The tip of the engaging protrusion 24 is fitted into the through hole 34 formed in the covering plate by bringing the lower surface of the through hole 24 and the lower surface of the engaging protrusion 24 into contact with each other. A synthetic resin cap characterized in that a lower covering plate portion is a knob 33 for peeling the covering plate. The outer peripheral portion of the upper wall of the inner plug 11 placed on the container body mouth portion is a cylindrical portion 19 that rises upward, and the lower inner surface of the lid cylinder 27 is hermetically sealed to the upper outer surface of the cylindrical portion. The synthetic resin cap according to claim 1, 2, or 3, wherein the cap is fitted.