JP2002052893A - Clip for writing utensil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clip for a writing utensil capable of being accurately molded even if a decorative member is repeatedly molded and capable of firmly mounted on the pocket or the like of a suit. SOLUTION: The leading end of a clip main body 10 is inserted in the bag- shaped fixing part formed to the rear surface of the decorative member 20 molded from a synthetic resin and the slip-off preventing projection formed to the leading end part of the rear surface of the clip main body is fitted in the slit part 22 of the fixing part and locked with a pair of the locking projections 23 formed in opposed relation to the upper end of the slit part. In the clip thus constituted for the writing utensil, the locking projections are formed to the inner surface of the fixing part and the gap part 24 between a pair of the opposed locking projections consists of a wide part 24b and a narrow part 24a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clip for a writing implement having a decorative body made of synthetic resin at the tip.

[0002]

2. Description of the Related Art A clip of a writing instrument is a large part attached to a tail end surface of a cap or a barrel. Therefore, an original function of fixing the writing instrument to clothes when the writing instrument is attached to a pocket of clothes. Besides, it is a part where design elements are regarded as important. For this reason, there is a case where a decorative member made of a synthetic resin in the shape of, for example, a famous character is attached to the tip of the clip to make the clip more interesting.

An example of a structure for attaching a decorative body formed of a synthetic resin to the tip of a clip body will be described. A bag-shaped fixing portion is formed on the back side of the decorative body, and the tip of the clip body is inserted into this fixing portion. A retaining projection is formed at the front end of the rear surface of the clip body, and the retaining projection is fitted into the slit of the fixing portion, and the retaining projection is formed by a pair of engaging members formed facing the upper end of the slit. The decorative body is locked to the stop projection so as not to fall off.

Generally, a clip of a writing implement has a ball portion formed on the back surface of the tip, and when the clip is attached to a clothes pocket or the like, the ball portion is pressed against the cloth of the clothes and the writing instrument is firmly inserted into the clothes pocket. When the decoration is attached to the tip of the clip body, the fixing part formed on the back side of the decoration protrudes from the back of the tip of the clip body, so the fixing part plays the role of this ball. do.

[0005]

FIGS. 7 and 8 show a conventional example of a decorative body. 7 and 8, a bag-shaped fixing portion 21 is provided on the back surface of the decorative body 20 formed of synthetic resin.
Are formed, and a slit portion 22 in the axial direction is formed on the back surface of the fixed portion 21. As shown in FIGS. 1 and 2, the retaining projection 11 formed on the inner surface of the distal end of the clip body 10 is fitted into the slit portion 22.
A pair of locking projections 23 are formed opposite to each other at the upper end. Therefore, the gap 2 between the pair of locking projections 23, 23
4 is narrower.

FIG. 9 shows a mold structure for molding a conventional decorative body. A cavity of the decorative body 20 is defined by a pair of mother dies D1 and D2 and a nest C. A pin P for forming the gap 24 is provided in the matrix D1, but since the width of the gap 24 is narrow, the pin P is longer than the width, and its dimensions are as follows. , Length × width is, for example, 1.5 mm × 0.5 mm. Therefore, the pin portion P
When the injection molding is repeated, the pin portion P is deformed, and the gap portion 24 and the locking projection 23 cannot be accurately formed.

Further, as described above, since the fixing portion formed on the back side of the decorative body projects from the back surface of the tip of the clip body, the fixing portion functions as this ball portion, but the back surface of the fixing portion is substantially flat. Therefore, when the writing implement is attached to the pocket of clothes, the back of the flat fixing part and the peripheral surface of the cap or shaft cylinder press the cloth etc., but in this state only the elasticity of the clip Then, there is also a problem that it can not be securely attached to clothes pockets.

Accordingly, an object of the present invention is to provide a writing instrument clip which can be accurately formed even when a decorative body is repeatedly formed and can be firmly attached to a pocket of clothes.

[0009]

In order to achieve the above object, according to the first aspect of the present invention, the tip of the clip body is provided on a bag-shaped fixing portion formed on the back surface of a decorative body formed of synthetic resin. The retaining projection formed at the front end of the back surface of the clip body is fitted into the slit of the fixing part, and the retaining projection is engaged with a pair of locking projections formed opposite the upper end of the slit. In the clip for a writing instrument that is locked, a locking projection is formed on the inner surface side of the fixed portion,
The gap between the pair of opposing locking projections is made up of a wide portion and a narrow portion.

[0010]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIGS. 1 to 4 show a main part of an embodiment of a writing instrument clip according to the present invention.
In FIG. 1, a retaining projection 11 in the axial direction is formed on the back surface on the distal end side of the clip body 10 made of synthetic resin.
The tip of the clip body 10 is the decorative body 2 described below.
0 and is fixed.

The decorative body 20 is formed by injection molding of a synthetic resin, and its shape is selected to be an interesting shape such as a famous character. On the back of the decorative body 20,
A bag-shaped fixing portion 21 is integrally formed. The shape and size of the inner surface of the fixing portion 21 are equal to the shape and size of the tip of the slit body 10. Then, the tip of the clip body 10 is inserted into the fixing portion 21.
A slit portion 22 having a width equal to the width of the retaining projection 11 is formed in the axial direction on the back surface of the fixing portion 21, and when the tip of the clip body 10 is inserted into the fixing portion 21,
The retaining projection 11 is fitted into the slit portion 22.

A pair of locking projections 23 are formed on the upper end of the slit 22 so as to face each other. Then, the upper end of the retaining projection 11 is locked by the locking projection 23, and the decorative body 2
0 is not dropped. Here, as shown in FIG. 4, the locking projection 23 is formed on the inner surface side of the fixing portion 21, and a gap 24 between the pair of locking projections 23, 23.
Is composed of a narrow portion 24a and a wide portion 24b. Incidentally, the width × length of the narrow portion 24a of the gap portion 24 is, for example, 0.5 mm × 0.7 mm, and the width × length of the wide portion 24b is, for example, 1.5 mm × 0.8 mm. It is.

FIG. 5 shows a mold structure for molding the decorative body 20. A cavity of the decorative body 20 is defined by a pair of mother dies D1, D2 and the insert C. And the gap 24
Is provided on the matrix D1 for forming
The pin portion P includes a thin portion for forming the narrow portion 24a and the wide portion 2.
4b is formed of a thick portion. That is, the pin portion P
Has two steps of a thin part and a thick part, and the rigidity is much higher because the length of the thin part forming the narrow part 24a is shorter than that of the conventional example shown in FIG. Therefore, even if the decorative body 20 is repeatedly injection-molded, the pin portion P is not deformed, and the decorative body 20 can be accurately formed.

FIG. 6 shows a state in which such a clip is attached to the cap 30. Since the wide portion 24b having a large width is formed on the back surface of the fixing portion 21, the wide portion 24b is formed on the peripheral surface of the cap 30. It is preferable to provide a projection 31 that penetrates. Then, when the writing implement is attached to a pocket of clothes or the like, the cloth is
Not only is it pressed between the peripheral surface of the cap 30 and the back surface of the fixed portion 21, but it is also pressed while being bent into a crank shape by the wide portion 24 b and the projection 31. Therefore, it can be firmly attached to a clothes pocket or the like.

[0015]

As described above, according to the present invention, the front end of the clip body is inserted into the bag-shaped fixing portion formed on the back surface of the decorative body formed of synthetic resin. In the clip for a writing implement, the retaining projection formed on the fixing portion is fitted into the slit portion of the fixing portion, and the retaining projection is locked on a pair of locking projections formed opposite to the upper end of the slit portion. Since the stop projection is formed on the inner surface side of the fixed part and the gap between the pair of opposing locking projections is made up of a wide part and a narrow part, it can be accurately formed even if the decorative body is repeatedly molded It can be a writing instrument clip that can be securely attached to a clothes pocket or the like.

[Brief description of the drawings]

FIG. 1 is a rear view of a main part of an embodiment of the present invention.

FIG. 2 is a side view of a main part of the embodiment of the present invention.

FIG. 3 is a rear view of the fixing unit.

FIG. 4 is a sectional view taken along line AA of FIG. 4;

FIG. 5 is an explanatory diagram of a mold structure.

FIG. 6 is an explanatory diagram of a state where the camera is attached to a cap.

FIG. 7 is a rear view of a fixing section of a conventional example.

FIG. 8 is a sectional view taken along line BB in FIG. 7;

FIG. 9 is an explanatory view of a conventional mold structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Clip main body 11 Retaining projection 20 Decorative body 21 Fixed part 22 Slit part 23 Locking projection 24 Gap part 24a Narrow part of a gap part 24b Wide part of a gap part 30 Cap 31 Projection

Claims (1)

[Claims] 1. A front end of a clip body is inserted into a bag-shaped fixing portion formed on a back surface of a decorative body formed of a synthetic resin, and a retaining protrusion formed on a front end portion of a back surface of the clip body is fixed to the fixing portion. Fit into the slit of the part,
In the clip for a writing implement, in which the retaining projection is locked to a pair of locking projections formed facing the upper end of the slit portion, the locking projections are formed on the inner surface side of the fixing portion and face each other. A clip for a writing instrument, wherein a gap between a pair of the locking projections includes a wide portion and a narrow portion.