JP3063879U - Pencil cap - Google Patents

Abstract

(57) [Problem] To provide a novel pencil cap that is extremely safe and durable and has good yield. An opening (2) is provided in the head end surface of a cap body (1), and a trough-shaped folding edge (3) having a semicircular cross section is provided at a cutting edge of the opening (2) by bending the cutting edge inward. Things.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a pencil cap having an opening at the head end for ensuring safety and the like.

[0002]

[Prior art]

 A cap for a pencil 6 with its head end face 7 closed as shown in FIG. 2 is known.

[0003] Such a pencil cap has a fatal danger of accidentally swallowing it by an infant and pinching the trachea or the like, or scratching the inner wall of the trachea or the like. In the manufacturing process, there were defects such as tear holes on the head end face due to so-called deep drawing, the amount of disposal as a defective product was relatively large, and the yield was poor.

Therefore, the present inventor has implemented a type as shown in FIG. 3 in order to solve the above-mentioned defect.

[0005] However, in this type, an opening 2 is provided at the head end of the cap body 1 and a cylindrical bead 5 having a circular cross section is formed on a cut edge thereof, and the cut edge is formed in a cylindrical shape on the inner side. The product is poorly manufactured because it is provided as a finished product by folding it into a shape, that is, it requires a multi-step and many steps to form the cylindrical bead 5, resulting in lower cost and lower cost. It was found that there were problems such as difficulty in conversion.

[0006]

[Problems to be solved by the invention]

 The purpose of the present invention is to provide a new pencil cap that solves the above-mentioned defects and problems at once.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the pencil cap according to the present invention is provided with an opening 2 in the head end surface of the cap body 1, and the incision of the opening 2 is bent inward to form a half-section. This is provided with a gutter-shaped folded edge 3 having a circular shape.

[0008]

【Example】

 In the embodiment of the present invention shown in FIG. 1, a metal plate is subjected to pressure drawing to form a cap body 1, an opening 2 is provided at the head end of the cap body 1, and a cut edge of the opening 2 is A trough-shaped bent edge 3 having a semicircular cross section is provided by bending the cut edge portion inward, and a concave groove-shaped throttle portion 4 is provided at an intermediate position of the cap body 1.

[0009]

[Effect of the invention]

 In the pencil cap according to the present invention, an opening 2 is provided in the head end surface of the cap body 1, so even if an infant accidentally swallows it and holds it on the trachea or the like, the opening is provided through the opening 2. Since it is possible to secure a communicating ventilation path, it is possible to completely avoid the danger caused by gripping, and since the trough-shaped bent edge 3 is provided at the cut edge of the opening 2, The trough-shaped folded edge 3 has a preferable advantage that it helps to avoid the danger of scratching the inner wall of the trachea and the like and helps to reinforce the cut edge of the opening 2, and furthermore, the head end face is broken during the manufacturing process to form a hole. Even if such a breach is to be cut by cutting the opening 2, the occurrence of defective products as described in the above-mentioned prior art can be remarkably reduced and the disposal for the disposal can be achieved. Work can be eliminated, and Since the gutter-shaped folded edge 3 in the present invention does not require many steps in a multi-stage manner as in the case of the above-mentioned conventional example of a cylindrical bead, the productivity is extremely high and the cost can be reduced. It is suitable and has a favorable effect such as extremely high yield.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing a conventional example.

FIG. 3 is a sectional view showing another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cap main body 2 Opening hole 3 Gutter-shaped fold 4 Throttle part 5 Cylindrical ball rim 6 Pencil 7 Head end face

Claims (1)

[Utility model registration claims] An opening 2 is provided in a head end surface of a cap body 1 and a trough-shaped folding edge 3 having a semicircular cross section is formed at a cutting edge of the opening 2 by bending the cutting edge inward. A pencil cap characterized in that: