JP2539175Y2 - Container lid - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container lid used as a lid of a container in which, for example, a snack confectionery or the like is put.

2. Description of the Related Art Conventionally, as a bottom cover of a container for storing snacks, for example, a metal bottom cover which is fixed to an open end of a paper cylindrical body by winding is known.

Problems to be Solved by the Invention However, the conventional metal lid has a problem that the material cost is high, and the work of fixing the metal lid to the body by winding is troublesome, and the cost is high.

An object of the present invention is to provide a container lid that solves the above-mentioned problem.

Means for Solving the Problems A lid for a container according to the present invention is attached to an open end of a cylindrical body having at least one end opened and an annular projection protruding inward at a periphery of the open end. A lid which is formed entirely of plastic and has an annular groove which is formed on the periphery of the surface facing the trunk side and which is open to the trunk side and into which the annular projection of the cylindrical trunk is fitted, over the entire circumference. A closed wall that closes the opening of the cylindrical body is formed at a portion of the inner peripheral wall of the annular groove on the side of the annular groove bottom wall, and a portion of the inner peripheral wall closer to the tip of the inner peripheral wall than the closed wall is located on the outer peripheral wall side. The protruding projection is formed so as to form an annular shape over the entire circumference of the inner peripheral wall as a whole, and the interval between the tip of the projection and the outer peripheral wall of the annular groove is made smaller than the width of the annular projection of the cylindrical body. A slit or notch is formed on the inner peripheral wall of the groove from its tip. Is what it is.

Action According to this lid, since the whole is made of plastic, material costs are lower than those made of metal. In addition, an annular groove which is open to the body side and is forcibly fitted with the annular protrusion of the cylindrical body is formed over the entire periphery at the peripheral edge of the surface facing the body side, and the bottom wall side of the annular wall in the inner peripheral wall of the annular groove. A closed wall that closes the opening of the cylindrical body is formed at a portion of the inner peripheral wall, and a projection protruding toward the outer peripheral wall is formed at a portion of the inner peripheral wall that is closer to the distal end of the inner peripheral wall than the closed wall. The distance between the tip of the projection and the outer peripheral wall of the annular groove is made smaller than the width of the annular projection of the cylindrical body, and a slit or notch is formed on the inner peripheral wall of the annular groove from the tip. Since it is formed, when the annular projection formed at the opening end of the trunk is forcibly pushed into the annular groove of the lid, the annular projection of the cylindrical trunk is deformed and the inner peripheral wall of the annular groove is deformed. By bending inward, the annular protrusion is forcibly fitted into the annular groove. Further, the deformed annular projection and the bent inner peripheral wall are restored to their original shapes by their own elastic force, thereby preventing the annular projection from dropping out of the annular groove. Therefore, the lid can be easily attached to the opening end of the body.
Further, when the lid attached to the trunk is pulled away from the trunk, the annular projection of the cylindrical trunk is deformed, and the inner peripheral wall of the annular groove is bent inward, so that the annular projection is moved from the annular groove. Be pulled out. Therefore, the lid can be easily removed from the body.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. Throughout the drawings, the same components and portions are denoted by the same reference characters, and description thereof is omitted. Also, in the following description,
The upper and lower sides of each drawing are referred to as upper and lower sides.

1 and 2 show a container in which the lid according to the present invention is used as a bottom lid.

In FIGS. 1 and 2, the container comprises a cylindrical body (1), a top lid (2) attached to the upper end of the body (1) and closing the upper end opening, and a lower end of the body (1). And a bottom cover (10) attached to the lower portion to close the lower end opening.

The body (1) is formed of paper, a composite material mainly composed of paper, plastic, a composite material mainly composed of plastic, or the like. At the lower end of the body (1), an inward curl (1a) (annular protrusion) is formed over the entire circumference. When the body (1) is made of plastic, instead of the inward curl (1a),
An annular inward projection made of a solid bead may be integrally formed.

The bottom cover (10) is entirely made of plastic, and has an annular groove (4) which is open upward and in which the inward curl (1a) of the cylindrical body (1) is forcibly fitted. It is formed over the circumference. The height of the inner peripheral wall (4a) of the annular groove (4) is higher than that of the outer peripheral wall (4b), and a portion of the inner peripheral wall (4a) slightly higher than the upper end of the outer peripheral wall (4b) has a radially outer portion. That is, a continuous annular projection (11) protruding toward the outer peripheral wall (4b) is integrally formed over the entire circumference. The upper surface of the annular projection (11) is inclined upward inward in the radial direction, and its inner peripheral edge is continuous with the upper end of the inner peripheral wall (4a) of the annular groove (4). The lower surface of the annular projection (11) is formed in a round shape corresponding to the inward curl (1a). The tip of the annular projection (11) is flat. The annular projection (11) may have the same thickness over the entire width. Also, instead of the continuous annular projection (11), a projection projecting radially outward is intermittently provided.
In addition, a discontinuous annular projection may be formed on the entire inner peripheral wall (4a) so as to be annular as a whole. At the same height as the bottom wall (4c) of the annular groove (4) of the bottom cover (10), a closing wall (6) for closing the lower end opening of the body (1) is integrally formed. In addition, a plurality of slits (12) extending from the upper end are formed in the inner peripheral wall (4a) of the annular groove (4) of the bottom cover (10) at predetermined intervals in the circumferential direction and over the entire height thereof. The slit (12) is used to attach the bottom lid (10) to the lower end of the body (1) when the inner peripheral wall (4a)
Are bent inward in the radial direction to facilitate mounting. Then, the inward curl (1a) at the lower end of the body (1) is forcibly fitted into the annular groove (4), whereby the bottom cover (1) is formed.
0) is attached to the body (1).

In addition, an inward curl may be formed at the upper end of the body (1), and the top cover (2) may have the same configuration as the bottom cover (10). Also, an outwardly projecting annular projection such as an outward curl is formed at the upper end of the body (1), and an engagement portion that engages with the annular projection at the lower end of the peripheral wall portion having a substantially U-shaped cross section. The top cover may be fitted over the upper end of the body (1).

Figs. 3 and 4 show the bottom cover (1
The following shows how to attach to 0). First, as shown in FIG. 3, the inward curl (1a) at the lower end of the body (1) is pressed against the upper surface of the annular projection (11) of the bottom cover (10), and is pressed downward as it is.
Then, as shown in FIG. 4, the inward curl (1a) is deformed and the inner peripheral wall (4a) of the annular groove (4) is bent radially inward.
a) enters into the annular groove (4). As shown in FIG. 1, the inward curl (1a) and the inner peripheral wall (4a)
It returns to its original state due to its own elasticity, thereby preventing the inward curl (1a) from falling out of the annular groove (4).
Thus, the bottom cover (10) is attached to the lower end of the body (1),
The lower end opening of the body (1) is closed by a closing wall (6).

When removing the bottom cover (10) from the lower end of the body (1),
Pull the bottom cover (10) away from the body (1). Then, at this time, the inward curl (1a) is deformed and the inner peripheral wall (4a) of the annular groove (4) is bent radially inward, so that the inward curl (1a) is removed from the annular groove (4). Exit. .

FIG. 5 shows another embodiment of the bottom cover according to the present invention. In FIG. 5, the connecting portions between the inner peripheral wall (4a) and the outer peripheral wall (4b) of the annular groove (4) of the bottom cover (15) and the bottom wall (4c) correspond to the inward curls (1a). It has a round shape. A continuous annular tongue piece (5) (projection) projecting outward in the radial direction is integrated with the inner peripheral wall (4a) of the annular groove (4) slightly above the upper end of the outer peripheral wall (4b) over the entire circumference. Is formed. The annular tongue (5) is gradually thinner radially outward, and its tip is pointed. The annular tongue piece (5) may have the same thickness over the entire width. Also, instead of the continuous annular tongue (5), a tongue protruding radially outward is intermittently provided.
Further, it may be provided so as to be annular as a whole, and a discontinuous annular tongue piece may be formed. At a position slightly below the annular tongue piece (5) of the bottom cover (15), a closing wall (6) for closing the lower end opening of the body (1) is integrally formed. The lower surface of the annular tongue (5) also has a round shape corresponding to the inward curl (1a). Then, the annular tongue (5) is provided with an inward curl (1) for attaching the bottom cover (15) to the body (1).
When a) is inserted into the annular groove (4), it is turned radially inward as shown by the dashed line in the figure, and the inward curl (1a) is removed to remove the bottom cover (15) from the body (1). ) Is pulled out radially inward in a state opposite to that shown by a chain line in FIG.
Also in this embodiment, a discontinuous annular tongue may be provided instead of the continuous annular tongue (5). A plurality of notches (16) are formed on the inner peripheral wall (4a) of the annular groove (4) from the upper end at predetermined intervals in the circumferential direction. The lower end of the notch (16) extends to the closed wall (6). The notch (16) facilitates attachment by bending the inner peripheral wall (4a) radially inward when attaching the bottom cover (15) to the lower end of the trunk (1) and removing the bottom lid (15) from the trunk (1). It is for doing.

In the above two embodiments, the lid according to the present invention is used for the bottom lid of the container. However, the present invention is not limited to this, and the lid can also be used for the top lid. In this case, the opening-forming cut groove may be formed, and a tab may be fixedly provided in a portion surrounded by the cut groove. In addition, the above 2
In one embodiment, the body of the container is cylindrical, but is not limited to this and may be rectangular.

Effect of the Invention According to the container lid of the invention, as described above, since the whole is made of plastic, material costs are lower than those made of metal. In addition, since the operation of attaching the lid to the opening end of the body becomes easy, the cost is lower than that of the conventional one, in combination with the reduction of the material cost.

Further, according to the container lid of the present invention, as described above, the container can be easily removed from the body,
The following effects are obtained. In other words, the cylindrical body of the container in which snacks and the like are put is made of paper or a composite material mainly made of paper, or made of a plastic material different from the lid or a plastic material different from the lid. Although those formed of composite materials are often used, the necessity of separate collection of refuse has recently increased for the purpose of recycling refuse for resource saving and simplifying disposal. In order to separate and collect garbage, it is necessary to easily remove the lid from the body. According to the container lid of the present invention, this requirement can be satisfied.

[Brief description of the drawings]

Fig. 1 is a partially enlarged sectional view of a container in which a lid according to the present invention is applied to a bottom lid, and Fig. 2 is a partially cutaway perspective view of the whole.
FIG. 3 is a partially enlarged sectional view showing a state before the bottom cover is attached to the lower end of the trunk, FIG. 4 is a partially enlarged sectional view showing a state in the middle of attaching the bottom lid to the lower end of the trunk, and FIG. FIG. 6 is a cross-sectional view of another embodiment of the lid according to FIG. (1) ... trunk, (1a) ... inward curl (annular protrusion),
(4) ... annular groove, (4a) ... inner peripheral wall, (4b) ... outer peripheral wall, (5) ... annular tongue, (10) (15) ... bottom cover, (1
1) ... annular projection, (12) ... slit, (16) ... notch.

Claims (1)

(57) [Scope of request for utility model registration] 1. A lid which is attached to an open end of a cylindrical body having at least one end opened and an inwardly protruding annular projection formed on a peripheral edge of the open end to close the opening. ,
The whole is formed of plastic, an annular groove is formed at the peripheral edge of the surface facing the trunk side, and is formed on the entire periphery of the annular groove which is open to the trunk side and the annular protrusion of the cylindrical trunk is forcibly fitted therein. A closing wall that closes the opening of the cylindrical body is formed at a portion on the groove bottom wall side, and a projection protruding toward the outer peripheral wall side is formed as a whole on the inner peripheral wall tip side of the inner peripheral wall with respect to the inner peripheral wall. It is formed so as to be annular over the entire circumference, the interval between the tip of the projection and the outer peripheral wall of the annular groove is made smaller than the width of the annular protrusion of the cylindrical body, and the slit or the slit is formed on the inner peripheral wall of the annular groove from the tip. A container lid in which a notch is formed.