JP2006192576A - Writing instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a writing instrument that can suppress deformation of a decorative piece, is difficult to catch a user's nails and the like, and is difficult to drop off, and can be attached in a predetermined direction.
A mounting portion 4b formed integrally with a clip 4 to which a decorative piece 7 is attached, and locking protrusions 4f and 7a and locking holes 4e and 7b formed on the mounting portion 4b and the decorative piece 7. At least two sets of fixing means, and slits 4d formed on three sides of the mounting portion 4b so as to surround the fixing means located on the ball portion 4g side of the clip 4. The decorative piece 7 is fixed to the clip 4 by being fitted into the hole.
[Selection] Figure 3

Description

  The present invention relates to a writing instrument in which a decorative piece is attached to a clip.

  The decorative piece in the writing instrument is attached mainly for the purpose of displaying the appearance of the appearance design, precautions for use, ink color display, character product, advertisement, product name, and the like. Since this type of decorative piece is usually a molded body of synthetic resin or the like, it is attached to a clip or the like of a writing instrument by using means such as adhesion, welding, and uneven fitting.

In the conventional attachment method, first, adhesion by an adhesive is mentioned, but in the case of adhesion by an adhesive, there are problems such as a decrease in appearance on appearance due to the protrusion of the adhesive and a decrease in adhesive strength over time.
In addition, the welding has problems such as a restriction of the material to be used due to a difference in melting point between the materials and a scratch on the decorative piece due to the welding pressure.
Furthermore, in the case of concave / convex fitting, there is a problem that if the pitch between the concave portion and the convex portion varies, it becomes difficult to align and cannot be attached.

  In order to solve such a problem, the applicant of the present application has intensively studied a mounting method using a method by concave-convex fitting, and can easily attach a decorative piece, and further, a writing instrument that does not impair the appearance of the exterior design, This is proposed in Japanese Patent Publication No. 2003-200694.

The proposed writing instrument will be described with reference to FIGS. 10 and 11 show a cap 50 used for a ballpoint pen or the like, and a clip 52 is attached to the tip of the cap body 51 as shown in the figure. A decorative piece 53 is attached to the front surface of the clip 52.
The decorative piece 53 is formed with two locking projections 53a and 53b in the longitudinal direction, and the clip 52 is formed with two locking holes 52a and 52b for locking with the locking projections 53a and 53b. Yes.

  At least one of the locking holes (the locking hole 52b in the writing instrument shown in FIG. 11) is formed as a long hole extending in the writing tool axial direction (the axial direction of the cap body 51). Yes. The locking hole 52b is formed as an elongated hole in the axial direction of the cap body 51 as described above, but the direction perpendicular to the axial direction is formed to have the same dimensions as the locking hole 52a. ing.

As described above, since the locking hole 52b is formed as an elongated hole in the axial direction of the cap body 51, even if the pitch of the locking hole and the locking projection is varied, the variation can be absorbed and assembled easily. It can be carried out.
Further, as described above, the locking hole 52b is formed into an elongated hole, so that when the load is applied to press-fit the decorative piece 53 during assembly, the locking protrusion 53b of the decorative piece 53 is perpendicular to the locking hole 52b. Even if it cannot be press-fitted into the press, it can be assembled without increasing the press-fitting.

Japanese Patent Laid-Open No. 2003-200694

When the cap body 51 and the clip 52 sandwich the edge of the pocket, the edge of the notebook, or the like, the clip 52 is expanded outward as indicated by the arrow in FIG. That is, the clip 52 and the decorative piece 53 are deformed.
At this time, since the engaging protrusions 53a and 53b of the decorative piece 53 are fitted into the engaging holes 52a and 52b of the clip 52, the decorative piece 53 is fixed to the clip 52. Therefore, the decorative piece 53 is deformed by the deformation. May fall off the clip 52, or the decorative piece 53 may be lifted from the clip 52 and become incompletely attached.

  Further, since the decorative piece 53 is mounted in a state of being placed on the surface of the clip 52, there is a problem that the decorative piece 53 easily falls off when the user hooks a nail or the like.

Further, in the writing instrument, the clip 52 is formed with two locking holes 52a and 52b, and the decorative piece 53 is formed with two locking projections 53a and 53b, and the decorative piece is fitted by fitting them together. Since 53 is fixed, the directionality of the decorative piece 53 has not been considered.
That is, the writing instrument has a problem that the decorative piece 53 can be attached to the clip 52 in the upside down direction. Therefore, it is necessary to form the decorative pieces 53 symmetrically in the vertical direction, and the design is restricted.

  The present invention has been made to solve such a problem, and can suppress the deformation of the decorative piece, it is difficult to catch the user's nails, etc., and the decorative piece is difficult to drop off, and is further decorated in a predetermined direction. The object is to provide a writing instrument to which a piece can be attached.

  The writing instrument according to the present invention, which has been made to achieve the above object, includes a mounting portion integrally formed on a clip, to which a decorative piece is attached, and a locking protrusion and a locking formed on the mounting portion and the decorative piece. At least two sets of fixing means including holes, and slits formed on three sides of the mounting portion so as to surround the fixing means located on the ball portion side of the clip, and the locking protrusions are fitted into the locking holes. By combining, the decorative piece is fixed to the clip.

Thus, since the slit is formed in the three sides of the mounting portion so as to surround the fixing means located on the ball side of the clip formed in the mounting portion, the cap body and the clip, the edge of the pocket, Or even if the edge of a notebook is pinched and the said clip is expanded outside, a deformation | transformation of an attachment part is suppressed.
As a result, even if the decorative piece is fixed to the clip by fitting, the deformation of the mounting portion is suppressed, so the decorative piece falls off the clip, or the decorative piece rises from the clip and is in an incomplete mounting state. Can be prevented.

Here, in order to suppress the deformation of the mounting portion while maintaining the mechanical strength of the mounting portion,
The ends of the slits formed on the three sides of the attachment part are extended from the fixing means side located on the ball side of the clip with a size in the range of 1/6 to 2/3 of the dimension between the fixing means. It is preferable.

Further, the attachment portion is formed in a recess recessed from the outer shape of the clip, and the decoration piece is attached to the attachment portion in a state where the lower portion of the decoration piece is accommodated in the recess and the upper portion of the decoration piece protrudes from the recess. It is preferable that the clip is formed so that the outer shape of the clip and the outer shape of the decorative piece are continuously connected in a state where the decorative piece is attached.
In this way, the decorative piece to be attached is attached to the attachment portion in the recess formed in the clip, and is formed so that the outer shape of the decorative piece continues following the outer shape of the clip. The nail or the like is not easily caught on the decorative piece, and the decorative piece can be prevented from falling off.

  Further, in order to prevent the decorative piece from being intentionally removed by the user, the slit is formed to a size that the user's finger cannot be inserted, and the decorative piece is attached to the slit. It is preferable that the end surface of the attachment portion desired for the slit and the end surface of the decorative piece are formed on substantially the same surface.

  Also, the side surface of the decorative piece is formed as a tapered surface that tapers toward the axis of the cap body to which the clip is attached, and the side surface forming the concave portion of the clip also faces the axis of the cap body. It is preferable that it is formed as a taper surface which tapers with the increase. Thus, since the taper surface is formed in the recessed part of a decoration piece and a clip, a decoration piece can be easily accommodated in the said recessed part and can be attached easily.

Furthermore, at least two sets of fixing means formed of a locking projection and a locking hole formed on the mounting portion and the decorative piece are formed from the locking hole formed on the mounting portion and the locking projection formed on the decorative piece. It is preferable that the fixing means includes a fixing means including a locking protrusion formed in the attachment portion and a locking hole formed in the decorative piece.
As described above, since the locking protrusion and the locking hole are formed on the decorative piece and the locking hole and the locking protrusion are formed on the one attachment portion, the decorative piece can be always attached in a predetermined direction. As a result, the decorative piece can be arranged in a certain direction without making a mistake, so that there is no design restriction.

  According to the writing instrument of the present invention, the deformation of the decorative piece can be suppressed, the user's nails or the like are not easily caught, the decorative piece is not easily dropped, and the decorative piece can be attached in a predetermined direction.

  An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a side view of the writing instrument and is a diagram showing the upper half in section. 2 is a plan view showing the cap, FIG. 3 is a cross-sectional view of the cap shown in FIG. 2, FIG. 4 is a cross-sectional view shown in FIG. 3, and (a) is a cross-sectional view taken along the line AA. Is a BB cross-sectional view, and (c) is a CC cross-sectional view. 5 is a cross-sectional view of the clip main body, FIG. 6 is a plan view of the clip main body shown in FIG. 5, FIG. 7 is a bottom view of the decorative piece, FIG. 8 is a cross-sectional view of the decorative piece shown in FIG. FIG. 9 is a cross-sectional view of the decorative piece shown in FIG. 8, where (a) is a cross-sectional view along AA, (b) is a cross-sectional view along BB, and (c) is a cross-sectional view along CC.

As shown in FIG. 1, in the writing instrument 1, a tail plug 6 is press-fitted into a shaft cylinder 5, and a cap 2 (cap body 3) is detachably attached to a tip portion of the shaft cylinder 5. A ballpoint pen refill 11 to which the pen tip 10 is attached is mounted in the shaft cylinder 5.
The type of ink mounted on the refill may be any of water-based ink, gel ink, and oil-based ink, or a water-based ballpoint pen that directly mounts ink. The material of the shaft tube 5 is a thermoplastic resin, and it is desirable that the shaft tube 5 be transparent so that the mounted refill can be seen and the amount of ink loaded inside can be grasped.

  The cap 2 includes a cap body 3 and a clip 4 attached to the tip of the cap body 3. The clip 4 is integrally formed with a top plug 4 a, and the clip 4 is attached to the cap body 3 by fitting the top plug 4 a to the tip of the cap body 3. Further, a seal rubber 8 is attached to the top plug 4a, and when the cap 2 is attached to the shaft cylinder 5, the ball tip portion 10a of the pen tip 10 of the writing instrument 1 contacts the seal rubber 8, and the ball tip portion 10a Sealing is achieved.

The clip 4 is provided with an attachment portion 4b for attaching the decorative piece 7. On the surface of the decorative piece 7, a decorative portion is formed by pad printing, silk printing, or a transfer film.
In addition, the said decoration part is not limited to the surface of the decoration piece 7, You may form a decoration part in the upper surface of the attachment part 4b or the back surface of the decoration piece 7, and may form the decoration piece 7 with a transparent body. When formed in this way, the decoration can be emphasized by the lens effect of the decoration piece 4.

Further, as shown in FIG. 5, the attachment portion 4 b is formed in a recess 4 c that is recessed from the outer shape of the clip 4. That is, as shown in FIGS. 1, 3, and 4, the decorative piece 7 is attached to the attachment portion 4b in a state where the lower portion of the decorative piece 7 is housed in the concave portion 4c and the upper portion of the decorative piece protrudes from the concave portion 4c. It is done.
3 and 4, the outer shape (contour) of the clip 4 is continuously connected to the outer shape (contour) of the decorative piece 7 in a state where the decorative piece 7 is attached. . That is, the clip 4 is attached so that the arcuate outer shape of the decorative piece continues to the arcuate outer shape of the clip 4.

In particular, it is desirable to make the gap S between the decorative piece 7 and the clip 4 as small as possible.
Here, as shown in FIGS. 4 and 9, the side surfaces 7 d and 7 e of the decorative piece 7 are formed as tapered surfaces that taper toward the axial center of the cap body 3.
Similarly, the side surfaces 4h and 4i forming the concave portion 4c of the clip 4 are also formed as tapered surfaces that taper toward the axial center of the cap body 3.
Since the tapered surface is formed in this way, the decorative piece 7 can be easily accommodated in the recess 4c and can be easily attached. In particular, by changing the angle of the taper surfaces of the two (by making the angle of the taper surface of the decorative piece 7 larger than the angle of the taper surface of the recess 4c), the decorative piece 7 is attached to the clip 4 on the clip surface. The gap S can be easily reduced.

In this way, the decoration piece 7 to be attached is attached to the attachment portion 4b in the recess 4c formed in the clip 4, and is formed so that the outer shape of the decoration piece 7 continues following the outer shape of the clip 4. Therefore, it is difficult for the user's nails and the like to be caught on the decorative piece, and the decorative piece can be prevented from falling off.
Further, as described above, the gap S on the clip surface when the decorative piece 7 is attached to the clip 4 is made as small as possible, so that the user's nails are not easily caught by the decorative piece, and the decorative piece is more easily dropped. Can be prevented.

Further, as shown in FIGS. 3 and 5, the attachment portion 4b of the clip 4 is formed with a locking hole 4e into which the locking projection 7a of the decorative piece 7 is fitted on the front end side, and the rear end side ( A locking projection 4f that fits into the locking hole 7b of the decorative piece 7 is formed on the ball 4g side of the clip 4.
In this manner, the decorative piece 7 is formed with the locking projection 7a and the locking hole 7b, and the one attachment portion 4b is formed with the locking hole 4e and the locking projection 4f. Can be installed on. Thus, since the decorative piece 7 can be arranged in a certain direction without making a mistake, there is no design restriction.

Further, the locking projection 7a of the decorative piece 7 is formed to have substantially the same diameter as the locking hole 4e of the mounting portion 4b, and is formed so as to fit without rattling.
On the other hand, the locking hole 7b of the decorative piece 7 is formed to have a larger diameter than the locking projection 4f of the mounting portion 4b. However, as shown in FIGS. 7, 8, and 9, a pair of surface portions 7c are formed in the locking hole 7b so as to have substantially the same dimensions as the diameter of the locking protrusion 4f. The locking projection 4f is attached by the surface portion 7c without rattling in the Y direction of FIG. 7 (direction perpendicular to the axial direction of the clip).
In addition, since the arrow X direction of the locking hole 7b is formed in a so-called long hole having a diameter larger than the diameter of the locking projection 4f, even if the pitch of the locking hole and the locking projection varies, The variation can be absorbed and the assembly can be easily performed.

Therefore, when attaching the decorative piece 7 to the attachment portion of the clip 4, first, the engaging protrusion 7 a of the decorative piece 7 is fitted into the engaging hole 4 e of the clip 4. As a result, one end of the decorative piece 7 is placed at the reference position, and then the locking protrusion 4f of the clip 4 is fitted into the locking hole 7b of the decorative piece 7.
At this time, even if the distance between the locking projection 7a and the locking hole 7b in the decorative piece 7 and the distance between the locking hole 4e and the locking projection 4f in the mounting portion 4b are not the same size, the engagement of the decorative piece 7 A stop hole 7b is formed with a larger diameter than the locking projection 4f of the mounting portion 4b, and a pair of surface portions 7c are formed in the locking hole 7b so as to have substantially the same dimensions as the diameter of the locking projection 4f. Because it is formed, it can be mounted without rattling.

Further, a slit 4d is formed on the ball portion 4g side of the clip 4 of the mounting portion 4b. As shown in FIG. 6, the slit 4 d is formed so as to surround the locking protrusion 4 f, and the end of the slit 4 d is formed to a substantially intermediate position of the clip 4.
Since the slit 4d is formed so as to surround the locking projection 4f in this way, the cap body 3 and the clip 4 sandwich the edge of the pocket or the edge of the notebook, and the clip 4 is shown by the arrow in FIG. Even if it expands outside as shown to, deformation | transformation of the attaching part 4b is suppressed.
As a result, even if the decorative piece 7 is fixed to the clip 4 by unevenness, the deformation of the attachment portion 4 b is suppressed, so that the decorative piece 7 falls off the clip 4 or the decorative piece 7 comes off the clip 4. It can be prevented from being lifted and incompletely installed.

  Further, it is preferable to form the end of the slit 4d deeper, in other words, to the vicinity of the locking hole 4e, but the mechanical strength of the mounting portion 4b is weakened. Therefore, the dimension L2 from the locking projection 4f to the end of the slit 4d is preferably 1/6 to 2/3 of the distance L1 between the locking hole 4e and the locking projection 4f.

Further, in the state where the decorative piece 7 is attached to the clip 4, as shown in FIG. 3, the end face 4j of the attaching portion desired for the slit 4d and the end face 7f of the decorative piece 7 are formed so as to be substantially flush with each other. Yes. In addition, the slit 4d is formed to have a dimension in which a user's finger or the like cannot be inserted therein.
In this way, the slit 4d is formed in a predetermined dimension, and the end surface 4j of the mounting portion 4b desired for the slit 4d and the end surface 7f of the decorative piece 7 are formed so as to be substantially the same surface. Therefore, the decorative piece 7 cannot be intentionally removed.

In the above embodiment, there are two fixing means for the locking projection 7a and the locking hole 7b formed on the decorative piece 7, and the locking hole 4e and the locking projection 4f formed on the mounting portion 4b. Although one case has been described, the present invention is not particularly limited to this, and a fixing means including a locking protrusion and a locking hole may be newly provided between the fixing means.
In this case, the end portion of the slit 4d is fixed to the ball portion side fixing means (positioned at the end) within a range of 1/6 to 2/3 of the distance L1 with the dimension of the fixing means positioned at both ends being L1. The dimension L2 from the fixing means) to the end of the slit 4d may be determined.

  In the above description, the ballpoint pen has been described as an example. However, the present invention can be applied not only to the ballpoint pen but also to a writing instrument such as a mechanical pencil or a fountain pen.

FIG. 1 is a side view of an embodiment according to the present invention, in which the upper half is a cross-sectional view. FIG. 2 is a plan view showing the cap shown in FIG. FIG. 3 is a cross-sectional view of the cap shown in FIG. 4 is a cross-sectional view of the cap shown in FIG. 1, wherein (a) is a cross-sectional view taken along the line AA shown in FIG. 3, (b) is a cross-sectional view taken along the line BB, and (c) is a cross-sectional view taken along the CC line. is there. FIG. 5 is a cross-sectional view of the clip body shown in FIG. FIG. 6 is a plan view of the clip body shown in FIG. FIG. 7 is a bottom view of the decorative piece shown in FIG. 1. FIG. 8 is a cross-sectional view of the decorative piece shown in FIG. 9 is a cross-sectional view of the decorative piece shown in FIG. 7, where (a) is a cross-sectional view taken along the line AA shown in FIG. 8, (b) is a cross-sectional view taken along the line BB, and (c) is a cross-sectional view taken along the line CC. FIG. FIG. 10 is a plan view showing a conventional cap. FIG. 11 is a partial cross-sectional view showing the cap shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Writing instrument 2 Cap 3 Cap main body 4 Clip 4b Mounting part 4c Recessed part 4d Slit 4e Locking hole 4f Locking protrusion 4h Side surface 4i Side surface 4j End surface 5 Shaft cylinder 6 Tail plug 7 Decoration piece 7a Locking protrusion 7b Locking hole 7c Surface part 7d Side surface 7e Side surface 7f End surface

Claims (6)

A mounting portion integrally formed with the clip to which the decorative piece is attached; at least two sets of fixing means formed on the mounting portion and the decorative piece, each including a locking projection and a locking hole; and a ball portion of the clip A slit formed on three sides of the mounting portion so as to surround the fixing means located on the side,
A writing instrument, wherein a decorative piece is fixed to a clip by fitting the locking protrusion into a locking hole.   The ends of the slits formed on the three sides of the attachment part are extended from the fixing means located on the ball part side of the clip with a dimension in the range of 1/6 to 2/3 of the dimension between the fixing means. The writing instrument according to claim 1, wherein: The attachment part is formed in a recess recessed from the outer shape of the clip, and the decoration piece is attached to the attachment part in a state where the lower part of the decoration piece is accommodated in the recess and the upper part of the decoration piece protrudes from the recess. ,
The writing instrument according to claim 1, wherein the outer shape of the clip and the outer shape of the decorative piece are continuously connected in a state where the decorative piece is attached. The slit is formed to a size that cannot insert a user's finger,
4. The writing instrument according to claim 3, wherein an end surface of the attachment portion desired for the slit and an end surface of the decorative piece are formed on substantially the same plane in a state where the decorative piece is attached.   The side surface of the decorative piece is formed as a tapered surface that tapers toward the axis of the cap body to which the clip is attached, and the side surface forming the concave portion of the clip also moves toward the axis of the cap body. The writing instrument according to claim 3, wherein the writing instrument is formed as a tapered surface that tapers off.   At least two sets of fixing means including a locking projection and a locking hole formed on the mounting portion and the decorative piece are fixed including a locking hole formed on the mounting portion and a locking projection formed on the decorative piece. 2. The writing instrument according to claim 1, further comprising: a fixing means including a locking projection formed on the mounting portion and a locking hole formed on the decorative piece.

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