JP7378758B2 - screw cap - Google Patents

Description

The present invention relates to a screw cap that is decorated, and more particularly, to a screw cap that has means that can be positioned during decoration.

Containers consisting of a container body and a screw cap that is screwed onto the mouth of the container body are used for a variety of purposes, and depending on the purpose, the containers are decorated with printing or other decorations. There is. When decorating not only the container body but also the screw cap, depending on the form of the decoration, there are cases where it is necessary to ensure that there is no misalignment between the decoration of the screw cap and the decoration of the container body.

In order to prevent the decoration from shifting and to accurately apply the decoration to the specified location on the screw cap, it is necessary to identify the direction of the screw cap and position it when decorating the screw cap. Therefore, it is necessary to accurately decorate a predetermined position, but positioning is particularly difficult in the case of a screw cap having a cylindrical side surface.

Conventionally, methods for positioning the screw cap when decorating the screw cap include forming a large part of the stopper at the hem of the screw cap and using it as a positioning member, and placing a positioning means at the beginning of the screw. Another method used is to provide a positioning rib on the inner surface of the side surface of the screw cap (see Patent Document 1).

JP2012-81966A

However, the conventional method of positioning screw caps has the problem that when using the stopper at the hem of the screw cap, the positioning function cannot be achieved unless the screw position is constant. There is a problem in that it is not possible to focus smoothly, and there is also a problem in that the method of providing a positioning rib on the inner surface of the side surface of a screw cap cannot be applied to a cap that is screwed together.

Therefore, an object of the present invention is to provide a screw cap that solves the positioning problem of conventional screw caps, and an object of the present invention is to provide a screw cap that can be easily positioned while keeping the screw start smooth. do.

The screw cap of the present invention is a screw cap that is attached to the mouth of a container body, and the screw cap has an upper surface and a cylindrical side surface, and the inner surface of the side surface has a cylindrical shape. , and a screw is provided, and the bottom surface of the upper surface portion is provided with an arcuate inclined surface in which the screw and the lead are equal to or smaller than each other.

The inclined surface is provided as a convex portion that slopes downward from the bottom surface.

The inclined surface is provided as a convex portion that slopes downward from an annular convex portion provided on the bottom surface.

The sloping surface is provided as a recess that slopes upward from the bottom surface.

The screw cap of the present invention is a screw cap that is attached to the mouth of a container body, and the screw cap has an upper surface and a cylindrical side surface, and the inner surface of the side surface has a cylindrical shape. , and a screw is provided, and the bottom surface of the upper surface part is provided with an arcuate inclined surface in which the lead is the same as or smaller than the screw, so that the inclined surface interlocking with the screw The screw cap can now be fixed at a predetermined position during decorating work, and furthermore, since no member is provided on the screw itself, capping performance can be maintained.

Since the inclined surface is provided as a convex portion that slopes downward from the annular convex portion provided on the bottom surface, the annular convex portion can be used as a wall for accommodating a packing or the like.

Since the inclined surface is provided as a recess that slopes upward from the bottom surface, the recess can be hidden by attaching a packing to the entire bottom surface when using the screw cap.

FIG. 3 is a perspective view from below of the screw cap of the first embodiment. It is a perspective sectional view from below of the screw cap of a 1st embodiment. It is a bottom view of the screw cap of 1st Embodiment. It is a perspective view from below of the screw cap of 2nd Embodiment. It is a perspective cross-sectional view from below of the screw cap of 2nd Embodiment. It is a bottom view of the screw cap of 2nd Embodiment.

The screw cap of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view of a screw cap 1 according to a first embodiment of the present invention, and FIG. 2 is a perspective cross-sectional view. What is shown in FIG. 3 is a plan view.

As shown in FIGS. 1 to 3, a screw cap 1 according to a first embodiment of the present invention is composed of a cylindrical side surface portion 2, a top surface portion 3 integrally formed on the top of the side surface portion 2, A screw 4 provided on the inner surface of the side surface portion 2 is screwed into and fixed to the mouth portion (not shown) of the container body. An annular convex portion 6 is provided on the bottom surface of the upper surface portion 3 so as to protrude downward, and serves as a wall when fixing the packing 7 to the screw cap 1. An inclined surface 5 is provided.

The height of the annular protrusion 6 is set to be less than the lead of the screw 4, and the annular protrusion 6 is formed at a predetermined distance from the inner surface of the side surface portion 2. The packing 7 is housed between the gasket 6 and the inner surface of the side surface portion 2 .

The inclined surface 5 is formed as a convex portion extending in an arc shape downward from the lower surface of the annular convex portion 6 with the same width as the annular convex portion 6 . The inclined surface 5 has a lead equal to or smaller than the lead of the screw 4. When the screw cap 1 of this embodiment is attached to a jig for holding a decorative object of a printing device, for example, in order to decorate, the screw cap 1 corresponds to the inclined surface 5 in the form of a convex portion on the jig. When a recess is provided and the screw cap 1 is screwed and attached, the inclined surface 5 is inserted into the recess, the step at the end of the inclined surface 5 abuts the end of the recess, and the screw The cap 1 can be accurately positioned and fixed in a constant relative position to the jig.

When the screw cap 1 of this embodiment is screwed onto the mouth of the container body, the upper end of the mouth comes into contact with the packing 7, so the inclined surface 5 is positioned inside the mouth. However, the use of the screw cap 1 is not affected at all. Further, since the screw 4 of the screw cap 1 can have a smooth starting point as in the conventional case, sufficient capping performance can be ensured.

The length of the arc-shaped inclined surface 5 of the screw cap 1 may be within one circumference. There is no particular restriction on the width of the inclined surface 5. The sloped surface 5 only needs to have a lead equal to or smaller than the lead of the screw 4, so when changing the lead of the screw 4, the lead of the sloped surface 5 should be changed in the same way. It is possible to deal with this. If the lead of the inclined surface 5 is made larger than the lead of the screw 4, it will become impossible to remove the screw cap 1 from the mold after molding the screw cap 1 with a mold. Accordingly, the lead of the inclined surface 5 needs to be changed to be equal to or smaller than the lead of the screw 4. Further, it is also possible to provide the inclined surface 5 directly on the bottom surface of the upper surface portion 3 without providing the annular convex portion 6.

Further, the shape of the side surface portion 2 is not limited to a cylindrical shape, and the inner surface may have a cylindrical shape such that the screw 4 is provided, and the outer surface may have various shapes other than the cylindrical shape. It is possible.

Next, a screw cap 11 according to a second embodiment will be explained. As shown in FIGS. 4 to 6, the screw cap 11 of the second embodiment includes a cylindrical side surface portion 12 and an upper surface portion 13 integrally formed on the upper portion of the side surface portion 12. An inclined surface 15 is provided on the bottom surface of the container 13, and is screwed and fixed to the opening of the container body by a screw 14 provided on the inner surface of the side surface portion 12.

The sloped surface 15 is provided in the form of a concave portion that slopes upward from the bottom surface and extends in an arc shape, and the sloped surface 15 has a lead that is equal to or smaller than the lead of the screw 14. . If the lead of the inclined surface 15 is made larger than the lead of the screw 14, the screw cap 11 cannot be removed from the mold after the screw cap 11 is molded. The lead is the same as or smaller than the lead of the screw 14.

When the screw cap 11 of this embodiment is attached to a jig of a printing device, a convex portion corresponding to the inclined surface 15 in the form of a concave portion is provided on the jig, and the screw cap 11 is screwed into the jig. When attached, the protrusion of the jig is inserted into the inclined surface 15 in the form of a recess, the step at the end of the inclined surface 15 abuts the end of the protrusion, and the screw cap 11 is inserted into the jig. The relative position with the tool can always be accurately positioned and fixed in a constant state.

The screw cap 11 of this embodiment can be used as various types of screw caps because the inclined surface 15 is formed in the form of a recess. For example, even when a packing is attached to the entire bottom surface of the upper surface portion 12 of the screw cap 11, since the inclined surface 15 does not protrude, the packing can be attached without any special processing.

The screw cap 11 of this embodiment, like the screw cap 1 of the first embodiment, can smoothly focus the thread start of the screw 14 as in the conventional case, and therefore has sufficient capping performance as in the conventional case. can be secured.

1, 11 Screw cap 2, 12 Side part 3, 13 Top part 4, 14 Screw 5, 15 Inclined surface 6 Annular projection 7 Packing

Claims (4)

A screw cap attached to the mouth of the container body,
The screw cap has an upper surface portion and a cylindrical side surface portion,
The inner surface of the side part has a cylindrical shape and is provided with a screw,
An arcuate inclined surface for positioning in the vertical direction is integrally provided on the bottom surface of the upper surface portion,
A screw cap characterized in that the lead of the inclined surface is equal to or less than the lead of the screw, and is not zero. The screw cap according to claim 1, wherein the inclined surface is provided as a convex portion that slopes downward from the bottom surface. The screw cap according to claim 1, wherein the inclined surface is provided as a convex portion that slopes downward from an annular convex portion provided on the bottom surface. The screw cap according to claim 1, wherein the inclined surface is provided as a recess that slopes upward from the bottom surface.