JP2013256055A - Cap type writing tool - Google Patents

Cap type writing tool Download PDF

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Publication number
JP2013256055A
JP2013256055A JP2012133106A JP2012133106A JP2013256055A JP 2013256055 A JP2013256055 A JP 2013256055A JP 2012133106 A JP2012133106 A JP 2012133106A JP 2012133106 A JP2012133106 A JP 2012133106A JP 2013256055 A JP2013256055 A JP 2013256055A
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JP
Japan
Prior art keywords
cap
magnet
shaft
shaft cylinder
type writing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2012133106A
Other languages
Japanese (ja)
Inventor
Hideki Misawa
秀樹 三澤
Original Assignee
Pilot Corporation
株式会社パイロットコーポレーション
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pilot Corporation, 株式会社パイロットコーポレーション filed Critical Pilot Corporation
Priority to JP2012133106A priority Critical patent/JP2013256055A/en
Publication of JP2013256055A publication Critical patent/JP2013256055A/en
Pending legal-status Critical Current

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Abstract

Provided is a cap-type writing instrument that can easily match the external appearance of a shaft cylinder and a cap without the mounting state of the cap and the shaft cylinder becoming obscured over time.
When a front part of a shaft cylinder is inserted into an opening of a cap, a magnet on the cap side and a magnet on the shaft cylinder side are attracted by a magnetic force to be in a mounted state, and the shaft cylinder in the mounted state is attached to the cap. By rotating the cap, the cap-side magnet and the shaft tube-side magnet are repelled by the magnetic force, and the cap is detached from the shaft tube.
[Selection] Figure 4

Description

  The present invention relates to a cap-type writing instrument.
  Conventionally, in a writing instrument such as a ballpoint pen or a fountain pen, a cap is attached to the front part of the shaft tube in order to protect a writing part such as a pen tip or a ballpoint pen tip. In addition, a structure in which the cap is attached to the shaft tube by elastically pressing the shaft tube of the writing instrument with a spring wig fixed in the cap, or as described in Patent Document 2, the inner surface of the cap and the shaft tube There is a structure in which protrusions and concavo-convex portions provided on the outer surface are attached to each other by being locked together. Alternatively, there is a structure in which a male screw formed on the outer surface of the shaft tube is screwed onto a female screw formed on the inner surface of the cap.
JP 2000-289384 A Japanese Patent Laid-Open No. 2001-213086
  As described above, the cap-type writing instrument of the conventional structure is a structure in which the cap is attached to the shaft tube with a pressure contact force by an elastic body or with a shape locking force such as a protrusion or a screw. The members rub against each other, and there is a possibility that the mounting state of the cap and the shaft tube becomes loose over time.
  Furthermore, when the shaft cylinder and the cap have axial continuity in the external shape, the direction on the cap side, such as the shape of the cap and the position of the clip, matches the directionality on the shaft cylinder side, such as the pattern and shape of the shaft In the structure where it is locked and attached with a spring wig or protrusion or uneven part when inserting, the front part of the shaft tube is inserted into the opening of the cap while aligning both positions with the mounting holder, or the cap after being inserted It is necessary to relatively align the shaft cylinder with each other to align them. Also, in the structure in which the cap is attached by screwing, when forming the cap and the shaft tube, the cap-side female screw and the shaft-tube side male screw are formed so that the positional relationship between the two coincides when the screwing is completed. There is a need to.
  The present invention solves the above-described conventional problems, and does not loosen the mounting state of the cap and the shaft tube over time, and easily matches the appearance relationship between the shaft tube and the cap. An object of the present invention is to provide a cap-type writing instrument that can be used.
The present invention
“1. A cap-type writing instrument having a structure in which a front portion of a shaft cylinder is inserted through an opening of a cap, and a magnet on which a plurality of different magnetic poles are arranged in a radial direction of the cap is provided on the cap. By providing the shaft tube with a magnet in which a plurality of different magnetic poles are arranged in the radial direction of the shaft tube, when the front portion of the shaft tube is inserted through the opening of the cap, A magnet and a magnet on the shaft cylinder side are attracted by a magnetic force to be in a mounted state, and the shaft cylinder in the mounted state is rotated with respect to the cap, whereby the magnet on the cap side and the magnet on the shaft cylinder side are A cap-type writing instrument, wherein the cap is repelled by a magnetic force and the cap is detached from the shaft cylinder.
2. The cap-type writing instrument according to claim 1, wherein the shaft cylinder and the cap have axial continuity in appearance. Is.
  The magnet in the present invention refers to a permanent magnet, and an alnico magnet, a ferrite magnet, a neodymium magnet, a samarium cobalt magnet, and a praseodymium magnet are used, but a neodymium magnet is preferable from the viewpoint of the strength of magnetic force and price. Further, the shape of the magnet is preferably an annular shape and has a structure in which the magnetic poles of the S pole and the N pole are separated at the center in the diameter direction, but limited to the shape of the magnet and the number of magnetic poles in the radial direction of the magnet. However, there are at least two magnetic poles, S and N, in the radial direction on both the cap side and the barrel side magnets, and they are attracted by magnetic force when the magnetic poles of both magnets are close to each other in different states. When the two magnetic poles are close to each other and are close to each other, it is important to adopt a structure that repels them by magnetic force. Further, it is not preferable to form the cap and the shaft cylinder from a ferromagnetic material such as iron that affects the magnetic force of the magnet, and it is preferable to form the cap and the shaft cylinder from resin, aluminum, brass, or the like that is not attracted to the magnet. In addition, although the magnet is exposed to the outside and the magnets on both the cap side and the shaft tube side are attracted to each other, the strength of attracting the magnets may be increased. If it is within the range, the surface of the magnet may be coated with a thin resin or rubber. In this case, the impact when the magnets come into contact with each other can be alleviated to prevent the magnet from cracking or chipping.
  According to the cap-type writing instrument of the present invention, since the cap is attached to the shaft cylinder using the magnetic force of the permanent magnet, the mounting state between the cap and the shaft cylinder does not become loose over time, and the shaft In a state where magnets are attracted to each other by a magnet in which a plurality of different magnetic poles are arranged in the radial direction of the cylinder side and the cap side and the cap is mounted on the shaft cylinder, the magnetic poles of adjacent magnets are opposite to each other. Is stably adsorbed, and the relationship in appearance between the shaft tube and the cap can be easily matched.
FIG. 1 is a cross-sectional view of an essential part showing a state in which a cap is mounted in a cap-type writing instrument of the present embodiment. FIG. 2 is a diagram of FIG. FIG. 3 is a cross-sectional view of the main part showing a state where the cap is removed. FIG. 4 is a view of FIG.
  Hereinafter, embodiments of the cap-type writing instrument according to the present invention will be described with reference to the drawings. In addition, in order to make explanation easy to understand, the same number is attached | subjected about the same member and the same part in drawing. In the description of this embodiment, the pen tip side is expressed as the upper side, and the opposite side is expressed as the lower side.
  Hereinafter, the cap-type writing instrument of the present embodiment will be described with reference to FIGS. 1 and 2. A cap-type writing instrument 1 according to this embodiment includes a shaft cylinder 2 and a cap 3. The shaft tube 2 has a neck portion 2b above the shaft tube body 2a, a ballpoint pen tip 2c at the tip of the neck portion 2b, and a circle made of a neodymium magnet on the outer periphery of the neck portion 2b located at the upper end of the shaft tube body 2a. The ring magnet 4 is fixed with an adhesive (not shown). The cap 3 having the clip 5 on the side surface of the cap body 3a has an annular recess 3c formed at the lower end of the opening 3b, and an annular magnet 6 made of a neodymium magnet is bonded to the recess 3c with an adhesive (not shown). )). The clip 5 is fixed by screwing the crown 7 into the cap body 3a.
  In the annular magnet 4 and the annular magnet 6 in the present embodiment, the magnetic poles of the S pole and the N pole are separated at the center in the diametrical direction, and when the cap 3 is attached to the shaft cylinder 2, The south pole of the ring magnet 6 is located on the clip 5 side, and the north pole of the ring magnet 4 attracted to the annular magnet 6 is located on the clip 5 side. A printing unit 8, which is a letter “P”, is provided on the surface of the shaft cylinder main body 2 a of the present embodiment, and the printing unit 8 is located on the N pole side of the annular magnet 6. Is attached to the shaft cylinder 2 so that the positions of the clip 5 and the printing unit 8 are automatically matched by magnetic force.
  Next, the case of removing the cap will be described with reference to FIGS. 3 and 4. The cap 3 and the shaft cylinder 2 in the state shown in FIG. 1 are rotated with respect to the S pole of the annular magnet 6 of the cap 3 as shown in FIG. The S pole of the annular magnet 4 of the cylinder 2 is adjacent to the N pole of the annular magnet 6 of the cap 3, and the N pole of the annular magnet 4 of the shaft cylinder 2 is adjacent to the N pole of the annular magnet 6. The cap 3 was able to be detached by raising the cap 3 with respect to the cylinder 2. Next, when the cap 3 is dropped by inserting the shaft 3 in front of the opening 3b of the cap 3, the magnetic force of the magnet causes the circle of the cap 3 relative to the S pole of the annular magnet 4 of the shaft cylinder 2. The ring magnet 4 and the ring magnet 6 are arranged such that the north pole of the ring magnet 6 is attracted and the south pole of the ring magnet 6 of the cap 3 is attracted to the north pole of the ring magnet 4 of the shaft cylinder 2. As shown in FIG. 1, the cap 3 could be mounted on the shaft tube 2 so that the clip 5 of the cap 3 and the printing portion 8 of the shaft tube 2 were automatically matched. .
  Note that a thin resin layer (not shown) is provided on the surfaces of the annular magnet 4 and the annular magnet 6 of the present embodiment, and the annular magnet 6 of the cap 3 is magnetically attached to the annular magnet of the shaft cylinder 2. Even if it hits 4 vigorously, the resin layer could prevent the magnet from cracking or chipping.
  The cap-type writing instrument of the present invention can be used for a fountain pen and a marker in addition to a ballpoint pen.
1 ... Cap-type writing instrument,
2 ... shaft tube,
2a ... barrel body, 2b ... neck, 2c ... ballpoint pen tip,
3 ... Cap,
3a ... cap body, 3b ... opening, 3c ... recess,
4 ... Annular magnet,
5 ... clip, 6 ... ring magnet, 7 ... crown, 8 ... printing section.

Claims (2)

  1. A cap-type writing instrument having a structure in which a front portion of a shaft cylinder is inserted through an opening of a cap, and the cap is provided with a magnet on which a plurality of different magnetic poles are arranged in a radial direction of the cap, and the shaft By providing the cylinder with a magnet in which a plurality of different magnetic poles are arranged in the radial direction of the shaft tube, when the front portion of the shaft tube is inserted through the opening of the cap, the magnet on the cap side and the magnet The magnet on the shaft cylinder side is attracted by a magnetic force to be in a mounted state, and the shaft cylinder in the mounted state is rotated with respect to the cap, whereby the magnet on the cap side and the magnet on the shaft cylinder side are magnetically A cap-type writing instrument characterized by repelling and removing the cap from the shaft cylinder.
  2. The cap-type writing instrument according to claim 1, wherein the shaft cylinder and the cap have axial continuity in appearance.
JP2012133106A 2012-06-12 2012-06-12 Cap type writing tool Pending JP2013256055A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012133106A JP2013256055A (en) 2012-06-12 2012-06-12 Cap type writing tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012133106A JP2013256055A (en) 2012-06-12 2012-06-12 Cap type writing tool

Publications (1)

Publication Number Publication Date
JP2013256055A true JP2013256055A (en) 2013-12-26

Family

ID=49952925

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012133106A Pending JP2013256055A (en) 2012-06-12 2012-06-12 Cap type writing tool

Country Status (1)

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JP (1) JP2013256055A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014011215A1 (en) 2014-07-29 2016-02-04 Montblanc-Simplo Gmbh Writing instrument with a housing and an attachable cap
CN105564091A (en) * 2015-12-04 2016-05-11 刘宁 Magnetic chalk sleeve
KR20170002016U (en) * 2017-05-26 2017-06-08 이충언 Electronic cigarette having a cap

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014011215A1 (en) 2014-07-29 2016-02-04 Montblanc-Simplo Gmbh Writing instrument with a housing and an attachable cap
CN105564091A (en) * 2015-12-04 2016-05-11 刘宁 Magnetic chalk sleeve
KR20170002016U (en) * 2017-05-26 2017-06-08 이충언 Electronic cigarette having a cap
KR200485776Y1 (en) 2017-05-26 2018-02-21 이충언 Electronic cigarette having a cap

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