JPH0635940Y2 - Paper lid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a paper lid fitted to a circular container body.

[Conventional technology]

The paper lid is designed so that it can be easily inserted into and removed from the container body and can be provided at low cost. For example,
As disclosed in Japanese Patent No. 52-10679, an inner winding rib is provided on the inner periphery of the upper edge portion of the ring body forming the paper lid, the lower end portion of the ring body is folded back inward, and the top plate is sandwiched between the folded piece and the inner winding rib. What you do
-As disclosed in JP-A-50981, bend the outer edge of the top plate downward,
A paper lid that attaches this downward piece to the inner circumference of the ring.
As in the 04 publication, aluminum foil and resin film are laminated on the inner surface of the top plate, the outer edge of the top plate is bent downward, and the downward piece is sandwiched between the ring and the folded piece folded back inside. Things are known.

The outer peripheral surface of each of these paper lids forms a smooth surface perpendicular to the top plate.

[Problems to be solved by the device]

When fitting a conventional paper lid to the container main body, it is necessary to determine the top and bottom of the paper lid to be fitted, but in the manual fitting of the paper lid, it is possible to determine the top and bottom of the paper lid. However, there is a problem that it is not suitable for mass production, and in the automatic fitting of the paper lid by the automatic feeder (also called a parts feeder), the ring peripheral wall 16 of the paper lid 11 is the top plate 12 as shown in FIG. As opposed to
Due to the vertical smooth surface, it was difficult to determine the top and bottom of the paper lid by the automatic feeder.

The present invention has been made in view of the above problems of the prior art, and an object thereof is to provide a paper lid suitable for automatic fitting.

[Means for Solving the Problems]

In order to achieve the above object, the paper lid of the present invention is provided with a bulging portion that is curved outward from the outer peripheral surface of the ring body at the lower end portion of the ring body whose upper part is closed by a top plate.

[Action]

The bulging portion that is curved outward from the lower end of the ring body reinforces the circumferential wall of the ring body and also makes the paper lid fall toward the top plate side from the upright state.

〔Example〕

Hereinafter, the structure of the paper lid of the present invention will be described with reference to the drawings of the embodiments. In the paper lid 1, a top plate 2 is provided on an upper portion of a ring body 5, and the top portion of the ring body 5 is closed by the top plate 2, and the lower end portion of the ring body 5 is In addition, the bulged portion 7 is formed so as to be curved outward from the outer peripheral surface 5a of the ring body.
The ring body 5 has the upper end portion 6a of the cylindrical peripheral wall 6 wound inward, and the inner winding rib 8 circumscribing the outer periphery of the top plate 2 on the inner periphery of the upper edge portion.
Is provided, and the lower end of the peripheral wall 6 is bent outward so that the ring 5
A bulging portion 7 which is curved outward from the peripheral wall 6 at the lower end of the peripheral wall 6, or the lower end of the peripheral wall 6 is folded back to the inner periphery, and the folded back piece 6b and the overlapping lower end of the peripheral wall 6 are bent outward, A bulged portion 7 is formed at the lower end of the wheel 5 so as to be curved outward from the peripheral wall 6. The top plate 2 provided on the upper part of the wheel 5 has a disc shape, and its outer peripheral portion 2a
Is wound with the upper end portion 6a of the peripheral wall 6 and is locked to the inner winding rib 8 or the outer peripheral portion 2a of the top plate 2 is bent downward, and the downward piece 3 is attached to the peripheral wall 6. Alternatively, the downward piece 3 of the top plate 2 is sandwiched between the peripheral wall 6 and the folded piece 6b at the lower end thereof. The top plate 2 and the wheel 5 are made of elastic paperboard or waterproof paper.

In the paper lid 1 shown in FIG. 3, the lower end portion of the peripheral wall 6 is folded back to the inner periphery, and the folded piece 6b and the overlapped lower end of the peripheral wall 6 are pressed upward to form the peripheral wall 6
The bulging portion 7 that is curved outward is formed only on the lower end portion of the. When forming the bulging portion 7, it is desirable to use the pressing dies D1 and D2, but it may be formed by other means.

The structure for attaching the top plate 2 to the wheel body 5 is not limited to the above-described example. For example, the lower end portion of the peripheral wall 6 is folded back inward, and the folding piece 6b is provided inside the peripheral wall to overlap the peripheral wall 6 with each other.
It is also possible to bend the lower end of the folded piece 6b outward to form the bulge 7 or to form the bulge 7 only on the lower end of the peripheral wall 6 and then attach the top plate 2 to the upper part of the peripheral wall 6. Is.

[Effect of device]

Since the paper lid of the present invention is configured as described above, it has the following effects.

Since the bulging portion provided at the lower end portion of the ring body is curved outward from the peripheral wall of the ring body, the bulging portion is easily fitted to the container body and also serves to reinforce the peripheral wall. This bulging portion is characteristic when the paper lid is aligned in the automatic feeder and fits into the container body. If the paper lid of the present invention is erected and aligned, the bulging portion is located at the lower end of the wheel. Since the paper lid is provided, the paper lid does not stand up and tilts toward the top plate side and falls toward the top plate side. That is, the paper lid that opens to the left tilts to the right, and the paper lid that opens to the right tilts to the left, so if you guide only one of them by the guide plate and return the other to align them again, It is possible to align so as to open toward and automatically fit.

Therefore, the paper lid of the present invention is most suitable as a paper lid for mass-produced ice cream, water cans, and the like.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a paper lid of the present invention, FIGS. 2 and 3 are partially cutaway front views of an example paper lid, and FIGS. 4 and 5 are cross-sectional views showing an example of forming a bulge portion. 6 (a) and 6 (b) are cross-sectional views of a main part of a conventional paper lid, and FIG. 7 is a cross-sectional view showing an example of alignment of the conventional paper lid,
FIGS. 8A and 8B are sectional views showing an example of the arrangement of the paper lid of the present invention. 1.11 …… Paper lid, 2,12 …… Top plate, 5 …… Wheel, 5a …… Rim outer surface, 6,16 …… Peripheral wall, 6a …… Top end, 6b …… Folding strip,
7 ... Bulging part, 8,18 ... Internal winding rib, D, D1, D2 ... Press die,
G: Information board

Claims (1)

[Scope of utility model registration request] 1. An inner winding rib (8) which winds an upper end (6a) of a peripheral wall (6) forming a ring (5) around an outer edge of a top plate (2) which closes the upper part of the ring (5). ), And a bulging portion (7) that is bent outward from the outer peripheral surface (5a) of the ring body is provided on the lower end of the peripheral wall (6) over the entire circumference.