JPH1120838A - Mouth structure of metallic tubular container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the mouth structure of a safe matallic tubular container having no fear that the fingers are cut when extruding the contents and the screw of the cap is damaged. SOLUTION: The top of screw threads 4 constituting the screws 3 formed at the mouth 2 in a tubular container body 1 is formed round and also the external peripheral edge 5 of the front end of the mouth 2 may be made round. The mouth 2 of the matallic tube constituted in such a way is formed to have a round shape at the external peripheral edge 5 of the front end of the mouth and the top of the screw threads 4 and there is no sharpened position in the whole external peripheral body of the mouth through which the contents are extruded and hence there is no fear that one hurts the skin even when he touches it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a mouth structure of a metal tube container.

[0002]

2. Description of the Related Art A cap for closing a mouth is detachably attached to a mouth of a metal tube container of this kind by a screw. As shown in FIG. 3, the opening 10 for attaching the cap has a sharp corner 11 at the outer peripheral edge of the tip, and the top of the screw thread 12 constituting the screw portion is sharply pointed. It is in the form.

[0003] When the contents in the tube container body 13 are ointment or cream, the mouth portion 10 is brought close to the part to which the skin is rubbed, and the contents are directly squeezed out. If the mouth is touched, and the touched portion is a sharp point of the mouth, the skin may be damaged. In particular, the beginning of the thread as the thread introduction point is the sharply pointed thread 12 top, which is particularly dangerous.

In addition, if the cap is forcibly screwed into the cap at the time of screwing in the cap, the screw of the cap may be easily damaged. There was an inconvenience.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a safe metal tube container structure which does not cause a cut accident when the contents are squeezed and used. It is another object of the present invention to provide a mouth structure of a metal tube container that does not break a screw of a cap.

[0006]

According to a first aspect of the present invention, there is provided a metal tube container having a screw portion provided at an opening of a metal tube container, wherein the screw portion has a rounded top portion. It is characterized by having a form. By making the top of the thread round, there is no danger of the skin being touched even if the skin touches the top of the thread. Also, since the top of the screw thread starting portion, which is the screw introduction portion, is rounded, the cap screw is not broken when the cap is screwed. Furthermore, if the outer peripheral edge of the tip of the mouth portion of the metal tube container is rounded as in the invention of claim 2 of the present application, the safety is further improved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an enlarged front view showing a mouth portion of a metal tube container. The metal tube main body 1 is specifically a molded product of aluminum, and a disk-shaped aluminum plank is impact-molded, and a spiral screw portion 3 is formed on the outer peripheral surface of the mouth portion 2 by threading the mouth portion 2. Form. At the time of this thread cutting, the thread 4 is also processed so that the top of the thread 4 constituting the threaded portion 3 has an arcuate roundness. Further, the outer peripheral edge 5 at the tip of the mouth portion 2 is also processed so that the corners are rounded in an arc shape using, for example, a roll.

The mouth portion 2 of the metal tube constructed as described above has a shape in which the outer peripheral edge 5 of the mouth portion and the top of the screw thread 4 are both rounded, and the mouth portion from which the contents are squeezed out. There are no sharp points on the entire outer periphery, and the skin is not likely to be damaged even if touched.

The present invention can be applied not only to a normal mouth structure having an open mouth, but also to a mouth having a sealing lid. In addition, in the case of sealing, as a process for rounding the outer peripheral edge of the front end of the mouth, a so-called curling process of bending the rising piece 6 at the front end inward as shown in FIG. 2 may be performed. Good.

[0010]

According to the invention as set forth in claim 1 of the present application, the screw thread constituting the screw portion spirally provided on the outer periphery of the mouth is formed with a rounded top, so that it can be used during use. Even if the skin touches, it will not be damaged, and it is possible to provide a highly safe mouth structure of the metal tube container. In addition, since the top of the screw thread of the screw introduction portion when the cap is screwed is also rounded, it is also useful for preventing damage to the screw of the cap.

According to the invention described in claim 2 of the present application,
Since the outer peripheral edge at the tip of the mouth is rounded, the safety is further enhanced, and a mouth structure of a metal tube container that is sufficiently compatible with so-called PL method can be provided.

[Brief description of the drawings]

FIG. 1 is a front view showing a main part of the present invention.

FIG. 2 is a cross-sectional view showing another embodiment of the present invention.

FIG. 3 is a front view of a main part of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tube container main body 2 Mouth part 3 Screw part 4 Screw thread 5 Tip outer peripheral edge

Claims (2)

[Claims] 1. A thread (3) provided at a mouth (2) of a tube container body (1) is formed so that a top of a screw thread (4) is rounded. Mouth structure in a metallic tube container that does. 2. The mouth structure of a metal tube container according to claim 1, wherein the outer peripheral edge (5) of the tip of the mouth (2) is rounded.