JP2008114576A - Cap of writing utensil etc. - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the trouble that a removable cap of a writing utensil, e.g. a ballpoint pen, a marking pen, etc. can keep it satisfactorily airtight sealed but can easily get lost when removed, and besides, is hazardous for children as evident in the past accident that they swallow the cap. <P>SOLUTION: This cap is contrived in the way that it is divided into two sections, one being a sleeve part which slides on the barrel of a writing utensil and the other being a head part which protects and seals the pen point, and yet these two parts are not completely separable from each other but hinge-connected so that the cap can be freely opened and closed. In order to use this gadget as a pen, the head part is released open and the barrel part is made to slide to the opposite side of the pen point with the head part left as it is. Further, a larger raised portion than the inside diameter of the sleeve part, is formed near both ends of the barrel part so as not to allow the sleeve part to fall off. Thus the cap does not come off the writing utensil. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention provides a cap that can be used without removing it from a pen shaft such as a ballpoint pen or a sign pen.

  Conventional caps such as writing instruments that can be used without removing from the pen shaft can protect the pen tip, but there are few that can be sealed sufficiently.

Problems to be solved by the invention

  Protect the nib without removing the cap of the writing instrument from the pen shaft, and ensure that the pen is well sealed.

Means for solving the problem

  The present invention employs the following means in order to solve the above problems. It is possible to separate the cylinder part of the cap that passes through the pen shaft that becomes the grip part of the ballpoint pen and the sign pen, and the arch-shaped cap head that seals and protects the pen tip, but completely To provide a hinge connection part on one side without separation, and to open and close the cylinder part and the head part, and to close and protect the pen point when the cylinder part and the head part are closed and in a complete cap state. However, when used as a pen or the like, it can be used by opening the head and sliding the cylinder part with the head attached to the vicinity of the pen shaft end on the opposite side of the pen tip. In the vicinity of both ends, a technical means was adopted in which a protrusion or the like for making the cylinder part larger than the inner diameter of the cylinder part was provided so that the cylinder part did not fall off from the pen shaft.

Embodiments of the present invention will be described based on examples with reference to the drawings.
FIG. 1 shows a cap (B) according to the present invention, which is composed of a cap cylinder (1) and a cap head (2). The cap cylinder (1) and the cap head (2). Is connected by the hinge connecting portion (3) and represents a state in which the head (2) is opened.
FIG. 2 shows the cap (B) of the present invention as in FIG. 1, but the cap head (2) is placed on the tube portion (1) of the cap so as to cover the cap. The hook (6) with a convex detent at the tip provided in (2) is fitted into the concave hook (7) provided on the cap cylinder (1) to indicate a completely closed lock state. Yes.
FIG. 3 shows an embodiment in which the pen tip is sealed and protected by covering the writing instrument (A) such as a ballpoint pen or a sign pen with the cap (B) of the present invention.
Further, the writing instrument (A) is provided with protrusions (13) at the upper end and the lower end, respectively, for preventing the cap (B) from falling off the writing instrument (A).
FIG. 4 shows an embodiment in which the head (2) of the cap (B) of the present invention is opened and slid to the opposite end side of the pen tip (12) when using a writing instrument (A) such as a ballpoint pen or a sign pen. It is an example.

Explanation of symbols

A ... Writing instrument B ... Cap 1 ... Cap portion 2 ... Cap head 3 ... Hinge connecting portion 5 ... Clip portion 6 ... Hanging portion 7 ... Hanging portion 11 ... Pen shaft portion 12 ... Pen tip portion 13 ... Projection portion 14 ... Anti-slip part

Claims (1)

  In caps for writing instruments such as ballpoint pens and sign pens, bisect the cylinder part of the cap that passes through the pen shaft that serves as the grip part of the pen and the arched cap head that seals and protects the pen tip Provided with a hinge connecting part on one side without being completely separated so that the cylinder part and the head part can be opened and closed, and the cylinder part and the head part are closed and the pen is in a complete cap state. The tip is sealed and protected, but when used as a pen or the like, the head is opened and the cylinder is slid with the head attached to the end of the pen shaft on the opposite side of the pen tip. A cap for a writing instrument or the like, which can be used, but is provided with protrusions or the like in the vicinity of both ends of the pen shaft so that the tube portion does not fall off the pen shaft.

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