WO2021117253A1

WO2021117253A1 - Securing structure that enables attachment/detachment of clip in retractable fountain pen, and clip attachment/detachment tool used in said securing structure that enables attachment/detachment of clip in retractable fountain pen

Info

Publication number: WO2021117253A1
Application number: PCT/JP2019/049077
Authority: WO
Inventors: 隆司柳迫
Original assignee: プラチナ萬年筆株式会社
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2021-06-17

Abstract

According to the present invention, in a retractable fountain pen, a clip that holds a pocket, etc., of clothes is detachably secured when being carried. A clip 12 is slid toward a tip end to cause an engaging elongated hole 15 to engage with an engaging ridge edge 5 of a tip shaft body 2; engaging protrusions 6, 6 of the tip shaft body 2 are slid toward the tip end while a grip part 17 of the clip 12 is expanded outward by a clip attachment/detachment tool 20, thus causing engaging holes 18, 18 of the clip 12 to engage; an end surface 23 of the clip attachment/detachment tool 20 is caused to fit in between an outer peripheral surface 4 of the tip shaft body 2 and the grip part 17 of the clip 12; and the grip part 17 of the clip 12 is slid toward a rear end while being expanded outward to release the engagement. Therefore, the clip can be attached and detached in a simple, reliable, and quick manner.

Description

Clip attachment / detachment device used in the fixed structure that allows the clip of the knock fountain pen to be attached and detached, and the fixed structure that allows the clip of the knock type fountain pen to be attached and detached.

The present invention relates to a fixed structure in which a clip used for carrying is removable in a knock fountain pen, and a clip attachment / detachment device used in a fixed structure in which a clip used in the knock fountain pen is removable.

Normally, a fountain pen is provided with a separate cap in order to protect the pen tip that is held at the tip of the fountain pen body that stores ink and the like.
In the fountain pen, the clip is fixed to the cap so that the pen tip can be held upward in order to prevent ink from leaking when the fountain pen is carried.
Therefore, the ink does not leak when the pen is carried, and the pen tip is exposed when the cap is removed, so that writing can be performed.
By the way, a so-called knock-type fountain pen has been proposed in which the pen tip can be freely exposed by hitting the knock portion protruding from the rear end of the fountain pen body so that writing can be started immediately without removing the cap. (See Patent Documents 1 and 2).
However, even in such a knock-type fountain pen, highly fluid ink is stored inside, so if the pen tip is held downward for a long time while carrying, the ink will leak from the pen tip. There is a risk that it will end up.
Therefore, as with the conventional fountain pen, the clip must be fixed near the tip of the knock-type fountain pen so that the pen tip can be held upward.
Therefore, in the above knock-type fountain pen, if the clip is fixed near the tip, the fingertip holding the knock-type fountain pen interferes with the clip at the time of writing, so that it becomes difficult to apply force to the fingertip and the fingertip interferes with the clip. It will be pressured, making it difficult to write for a long time.

Jitsukaisho 57-4383 Japanese Unexamined Patent Publication No. 2006-103333

The problem to be solved is that in the knock-type fountain pen, the clip can be attached and detached to prevent ink from leaking when carrying, and to prevent interference between the fingertip and the clip when writing, to the fingertip due to this interference. It prevents the pressure of the ink and enables writing for a long time.

The most important feature of the present invention is the use of a clip attachment / detachment device for fixing a clip to be used at the time of carrying in a knock type fountain pen so that the clip can be detachably attached / detached.
The first feature is
A front shaft body having a hole communicating inside at the tip and fixing a clip on the outer peripheral surface thereof and a rear shaft body having a hole communicating inside at the rear end are integrated, and a rear shaft body is inside the rear shaft body. A fountain pen body with a built-in pen tip extension mechanism that allows the pen tip to move freely from the hole of the tip shaft body by hitting the knock part that protrudes freely from the hole part of the fountain pen, and the outer peripheral surface of the tip shaft body of the fountain pen body. In a knock-type fountain pen consisting of a clip to be fixed to
A plurality of protruding engaging portions are formed on the outer peripheral surface of the tip shaft body forming the fountain pen body.
The clip includes a clip body that holds a pocket of clothes and the like, and a grip portion that is fixed by gripping the tip shaft body of the fountain pen body, and engages with a plurality of engaging portions of the fountain pen body. It forms an engaged portion formed in a plurality of holes, and forms an engaged portion.
A plurality of engaging portions formed so as to project on the outer peripheral surface of the tip shaft body forming the fountain pen body, and a plurality of engaged portions formed in a hole shape in the grip portion of the clip are included in the clip. The peripheral surface is attached to the outer peripheral surface of the tip shaft body that forms the main body of the fountain pen, and is elastically fixed so that it can be attached and detached.
First, when a clip is required for use during carrying, it is formed on a plurality of engaging portions formed so as to project on the outer peripheral surface of the toe shaft of the knock-type fountain pen, and a grip portion forming the clip. The clip is fixed to the toe shaft of the fountain pen body by engaging the plurality of engaged portions formed in the shape of holes with the elasticity of the grip portion of the clip.
Therefore, when carrying the fountain pen, the pen tip of the fountain pen body is held upward by sandwiching the clip fixed to the tip shaft body forming the fountain pen body constituting the knock-type fountain pen in a pocket of clothes or the like. It is possible to prevent ink leakage.
In addition, when writing for a long time or when a clip is not required for accommodating the knock-type fountain pen in the pen case, a plurality of fountain pens formed so as to project on the outer peripheral surface of the toe shaft of the knock-type fountain pen. By disengaging the engagement between the engaging portion and the engaged portion formed in the shape of a hole formed in the grip portion forming the clip with elasticity against the elasticity of the grip portion. The clip will be removed from the toe shaft of the fountain pen body.
Therefore, at the time of writing, the fingertip does not interfere with the clip and is not pressed, and the pressure on the fingertip due to this interference can be prevented and the writing can be performed for a long time.
Based on the first feature, as the second feature,
Of the plurality of engaging portions formed so as to project on the outer peripheral surface of the front shaft body, at least one engaging portion is engaged in extending the entire length of the engaging portion along the direction of the central axis of the front shaft body. As a joint edge,
Of the plurality of engaged portions formed on the clip, at least one engaged portion is formed as an elongated engaging elongated hole having an opening in the tip direction.
The engaging elongated hole at the tip of the clip is slid and engaged with the engaging ridge edge of the tip shaft body.
Therefore, when fixing the clip to the tip shaft of the knock-type fountain pen, a plurality of engaging portions formed so as to project on the outer peripheral surface of the tip shaft and a hole-shaped grip portion of the clip are formed. When engaging with a plurality of engaged parts, first, through the opening of the engaging elongated hole which is the engaged part formed at the tip of the clip, with respect to the engaging ridge edge which is the engaging part of the shaft body. It engages while sliding.
As a result, the mounting position of the clip to be fixed to the front shaft body is determined, so that the engagement protrusion of the other engaging portion formed so as to protrude from the outer peripheral surface of the front shaft body and the grip portion of the clip In the engagement with the engagement hole of the other engaged portion formed in the above, the positional relationship between the two automatically matches, so that the clip should be fixed to the toe shaft body easily and accurately. Will be possible.
Based on the first feature or the second feature, as the third feature,
It is used when attaching and detaching the clip in the fixed structure that allows the clip to be attached and detached in the knock type fountain pen.
A desorption device main body having a semi-cylindrical shape having an inner peripheral surface having a curved surface shape that can be brought into close contact with the outer peripheral surface of the tip shaft body, and having an end face that abuts on the end face of the grip portion of the clip, and an end of the desorption device main body. The portion is extended along the inner peripheral surface direction, and integrally forms a grip portion that elastically grips the tip shaft of the knock-type fountain pen.
Therefore, when attaching the clip to the knock-type fountain pen, the engaging elongated hole formed at the tip of the clip is formed on the outer peripheral surface of the tip shaft body that forms the fountain pen body of the knock-type fountain pen. On the other hand, while sliding and engaging the clip through the opening, the grip portion of the clip is gripped on the outer peripheral surface of the front shaft body, while the grip portion of the clip attachment / detachment device is gripped from the opposite direction of the position of the grip portion of the clip. By gripping the outer peripheral surface of the tip shaft body, the end surface of the attachment / detachment device main body of the clip attachment / detachment device comes into contact with the end surface of the grip portion of the clip.
Then, when the clip attachment / detachment device is further pushed, the end face of the grip portion of the clip expands outward to weaken the force of the grip portion, and in that state, the clip attachment / detachment device is directed toward the tip of the toe shaft body. By sliding the clip, the engaging elongated hole is completely engaged with the engaging ridge edge formed on the outer peripheral surface of the toe shaft body, and the clip is gripped at a position corresponding to a plurality of engaging protrusions. The part will move.
Then, by separating the grip portion of the clip attachment / detachment device from the outer peripheral surface of the front shaft body, a plurality of engagement holes, which are engaged portions of the grip portion of the clip, are formed on the outer peripheral surface of the front shaft body. Since it is elastically and completely engaged with the engaging protrusion of the above, the clip can be attached to the toe shaft body.
Further, when removing the clip from the knock-type fountain pen, the clip attachment / detachment device main body is gripped by the tip shaft of the knock-type fountain pen from the opposite direction of the clip attachment position. The end face of the clip comes into contact with the end face of the grip portion of the clip.
Then, when the clip attachment / detachment device is further pushed, the end surface of the grip portion of the clip expands outward against its elasticity and the force of the grip portion weakens, so that the end surface of the grip portion protrudes to the outer peripheral surface of the toe shaft body. The engagement between the engaging protrusion, which is the engaging portion, and the engaging hole, which is the engaged portion of the grip portion of the clip, is released.
Further, by sliding the clip attachment / detachment device toward the rear end of the front shaft body in that state, the engagement elongated hole of the clip and the engagement ridge edge of the front shaft body are engaged, and the hole of the clip is formed. All the engagement between the shape-shaped engaging hole and the engaging protrusion of the toe shaft can be released.
As a result, by removing the clip attachment / detachment device gripped by the front shaft body, the clip fixed to the front shaft body can be easily and surely removed.
Based on the third feature, as the fourth feature,
In the detachable device main body, the end face that comes into contact with the end face of the grip portion of the clip has a tapered shape that is an inclined surface in the contact direction.
Therefore, when the clip is attached to or detached from the tip shaft of the knock-type fountain pen, the force from the end face of the attachment / detachment device main body of the clip attachment / detachment device is more likely to be concentrated in the pushing direction with respect to the end face of the gripping body of the clip that comes into contact with the clip. As a result, the end surface of the detachable device main body easily bites between the grip portion of the clip and the outer peripheral surface of the toe shaft body.
As a result, since the grip portion of the clip expands outward more widely, the force of the grip portion is increased by increasing the clearance between the grip portion of the clip and the outer peripheral surface of the front shaft body when the clip is attached or detached. Since it weakens and slides easily, it becomes possible to more easily and surely attach / detach the clip to / from the knock-type fountain pen.

With the fixing structure of the present invention, the clip is detachably fixed to the tip shaft of the knock-type fountain pen, so that the pen tip is held upward when carrying, and the clip is removed to interfere with the fingertip and the clip. It is possible to write for a long time without pressing the fingertips, and the clip can be attached and detached smoothly by using a special clip attachment / detachment device, so the convenience of the writing tool can be improved according to the usage situation. It has an excellent effect that can be significantly improved.

FIG. 1 (a) is a plan view of a knock-type fountain pen at the time of protrusion having an embodiment of the present invention, and FIG. 1 (b) is a plan view of a knock-type fountain pen at the time of immersion having an embodiment of the present invention. ..
FIG. 2 is an enlarged perspective view of a tip shaft body forming a knock-type fountain pen with a pen tip portion protruding, which comprises an embodiment of the present invention.
FIG. 3 (a) is an enlarged perspective view of a tip shaft body forming a knock-type fountain pen in which a pen tip portion having an embodiment of the present invention is immersed, and FIG. 3 (b) is a sectional view taken along the line AA and the same figure. (C) is a cross-sectional view taken along the line BB.
FIG. 4 (a) is an enlarged perspective view of a clip constituting a knock-type fountain pen including an embodiment of the present invention, FIG. 4 (b) is a sectional view taken along the line AA, and FIG. 4 (c) is a cross-sectional view taken along the line BB. It is a cross-sectional view.
5 (a) is an overall perspective view of the clip attachment / detachment device used in the clip fixing structure according to the embodiment of the present invention, FIG. 5 (b) is a right side view of the clip attachment / detachment device, and FIG. It is a left side view of the clip attachment / detachment device.
6 (a) to 6 (e) show a method of attaching a clip to a fountain pen main body according to the present invention.
7 (a) to 7 (e) show a method of removing a clip in a knock-type fountain pen according to an embodiment of the present invention.

In a knock-type fountain pen, the clip is detached by detachably engaging the engaging portion formed so as to protrude from the front shaft body of the fountain pen body and the engaged portion formed in a hole shape in the grip portion of the clip. The clip can be freely attached and detached by using a clip attachment / detachment device so that the two can be engaged or disengaged easily, surely, and quickly.

The knock-type fountain pen 1 provided with a fixed structure that allows the clip to be attached and detached in the knock-type fountain pen according to the embodiment of the present invention is as follows.
That is, the knock-type fountain pen 1 including the embodiment of the present invention has a front shaft body 2 having a tip hole 3 communicating with the inside at the tip and a rear shaft body 7 having a rear end hole 8 communicating with the inside at the rear end. By screwing the screw structure into one, and by striking the knock portion 11 that protrudes freely from the rear end hole 8 of the rear shaft body 7, the pen tip from the tip hole 3 of the front shaft body 2 The fountain pen body 9 has a built-in pen tip extension mechanism (not shown, the same applies hereinafter) that allows the part 10 to freely appear and disappear, and the tip shaft body 2 that forms the fountain pen body 9 can be attached to and detached from the outer peripheral surface 4. It is composed of a clip 12 fixed to [see FIGS. 1 (a) and 1 (b))].
A plurality of engaging portions are formed so as to project on the outer peripheral surface 4 of the toe shaft body 2 in the knock type fountain pen 1.
That is, in the plurality of engaging portions, the engaging portions formed so as to project in the vicinity of the tip of the front shaft body 2 extend along the central axis direction of the front shaft body 2 and have a cross-sectional shape thereof. The engaging ridge edge 5 having a substantially T shape is used, and the engaging portion formed so as to protrude near the rear end of the front shaft body 2 is two

engaging protrusions

6 and 6 having a substantially rectangular parallelepiped shape. The engaging

protrusions

6 and 6 are formed on the outer peripheral surface 4 of the rectangular parallelepiped 2 at positions facing each other with the central axis in between [FIGS. 2 and 3 (a) to 3 (a) to FIG. (C)].
Further, the clip 12 has a clip body 14 in which the inner peripheral surface 13 is in close contact with the outer peripheral surface 4 of the tip shaft body 2 forming the fountain pen body 9 and elastically can hold a pocket of clothes or the like, and the tip shaft. A grip portion 17 that can elastically grip the front shaft body 2 while being in close contact with the outer peripheral surface 4 of the body 2 is integrally formed, and a plurality of engaged portions are formed.
That is, a straight line having an opening 16 at the tip of the clip 12 which is an engaged portion that can be engaged while sliding with respect to the engaging ridge edge 5 formed at the tip of the front shaft body 2. A plurality of engaging protrusions 6 are formed on the grip portion 17 at positions facing each other on the outer peripheral surface 4 of the front shaft body 2 with the central axis of the front shaft body 2 interposed therebetween. It forms two hole-shaped engaging

holes

18 and 18 that engage with 6 [see FIGS. 4 (a) to 4 (c)].
Since the knock-type fountain pen 1 including the embodiment of the present invention has the above configuration, the attachment / detachment of the clip 12 in the fixed structure that enables the attachment / detachment of the clip in the knock-type fountain pen according to the present invention is as follows. Is.
First, when the clip 12 is attached to the knock-type fountain pen 1, it is as shown in FIGS. 6A to 6E.
When attaching / detaching the clip 12 to / from the knock-type fountain pen 1 (including both attaching / detaching), a dedicated clip attachment / detachment device 20 is used.
That is, the clip attachment / detachment device 20 has a semi-cylindrical shape having an inner peripheral surface 21 having a curved surface shape that can be brought into close contact with the outer peripheral surface 4 of the tip shaft body 2 forming the fountain pen main body 9. A detachable device main body 22 having a tapered end face 23 that can come into contact with the end face 19 of the grip portion 17 and bite into the grip portion 17, and an outer peripheral surface of the tip shaft body 2 of the knock-type fountain pen 1 at one end of the detachable device main body 22. 4 is integrally formed with a grip portion 24 extending along the inner peripheral surface 21 direction so that the 4 can be gripped elastically [see FIGS. 5 (a) to 5 (c)].
First, the engaging elongated hole 15 formed at the tip of the clip 12 is gradually engaged while sliding on the engaging ridge edge 5 formed on the outer peripheral surface 4 of the front shaft body 2 through the opening 16. The grip portion 17 of the clip 12 is gripped on the outer peripheral surface 4 of the front shaft body 2.
Then, the grip portion 24 of the clip attachment / detachment device 20 is gripped by the front shaft body 2 on the rear side of the grip portion 17 of the clip 12 from the opposite direction of the position of the grip portion 17, so that the end surface 23 of the attachment / detachment device main body 22 is gripped. The clip 12 comes into contact with the end surface 19 of the grip portion 17 [see FIGS. 6 (a) and 6 (b)].
Then, when the clip attachment / detachment device 20 is further pressed against the grip portion 17 of the clip 12, the end surface 23 of the attachment / detachment device main body 22 has a tapered shape, so that the grip portion 17 of the clip 12 and the outer periphery of the toe shaft body 2 can be easily obtained. It bites into the surface 4 and the grip portion 17 of the clip 12 expands outward to weaken the force of the grip portion 17 [see FIG. 6 (c)].
Further, the grip portion 24 of the clip attachment / detachment device 20 is slid toward the tip end direction of the front shaft body 2 while being brought into contact with the grip portion 17 of the clip 12 from behind, whereby the grip portion 24 is formed on the outer peripheral surface 4 of the front shaft body 2. The engaging elongated hole 15 of the clip 12 engages with the engaging ridge edge 5, and at a position corresponding to a plurality of engaging

protrusions

6 and 6 formed on the outer peripheral surface 4 of the toe shaft body 2. The engaging hole 18 and the grip portion 17 of the clip 12 having the engaging hole 18 move (see FIG. 6D).
Therefore, by separating the grip portion 24 of the clip attachment / detachment device 20 from the outer peripheral surface 4 of the front shaft body 2, the engaging

holes

18 and 18 of the grip portion 17 of the clip 12 are formed on the outer peripheral surface 4 of the front shaft body 2. Since each of the plurality of engaging

protrusions

6 and 6 is elastically engaged with each other, the clip 12 can be attached to the toe shaft body 2 [see FIG. 6 (e)].
On the other hand, when the clip 12 fixed to the knock type fountain pen 1 is removed, it is as shown in FIGS. 7 (a) to 7 (e).
First, on the outer peripheral surface 4 of the front shaft body 2 of the fountain pen main body 9, the grip portion 24 is gripped on the front side of the grip portion 17 of the clip 12 while pushing the clip attachment / detachment device 20 from the direction opposite to the mounting position of the clip 12. [See FIGS. 7 (a) and 7 (b)].
Then, by further pushing the clip attachment / detachment device 20, the end face 23 of the attachment / detachment device main body 22 comes into contact with the end face 19 of the grip portion 17 of the clip 12, and the end face 23 of the attachment / detachment device main body 22 is tapered. The end surface 23 easily bites between the outer peripheral surface 4 of the front shaft body 2 and the inner peripheral surface 13 of the grip portion 17 of the clip 12.
Therefore, since the grip portion 17 of the clip 12 expands outward and the force of the grip portion 17 weakens, it is fixed to the engaging

protrusions

6 and 6 on the outer peripheral surface 4 of the toe shaft body 2 and the knock type fountain pen 1. The grip portion 17 of the clip 12 is disengaged from the engagement holes 18 and 18 [see FIG. 7 (c)].
Further, by sliding the clip attachment / detachment device 20 toward the rear end of the front shaft body 2 along the outer peripheral surface 4 of the front shaft body 2, the engaging ridge edge 5 formed near the tip end of the front shaft body 2 is formed. The clip 12 that was engaged with the clip 12 is also disengaged from the engaging elongated hole 15 at the same time [see FIG. 7 (d)].
Therefore, in the engagement between the tip shaft body 2 and the clip 12 that were engaged with each other, the engagement between the engaging ridge edge 5 and the engaging elongated hole 15 and the engaging

protrusions

6 and 6 and the engaging

hole

18 , 18 is completely disengaged, so that the clip 12 can be quickly removed from the toe shaft body 2 by removing the clip attachment / detachment device 20 [see FIG. 7 (e)]. ..

By making the clip attached to the fountain pen body removable, it can be applied to many writing tools.

1 Knock type fountain pen 2 Tip shaft body 3 Tip hole 4 Outer surface 5 Engagement ridge edge 6 Engagement protrusion 7 Rear shaft body 8 Rear end hole 90 Fountain pen body 10 Pen tip 11 Knock part 12 Clip 13 Inner peripheral surface 14 clip Main body 15 Engagement slot 16 Opening 17 Grip 18 Engagement hole 19 End face 20 Clip attachment / detachment device 21 Inner peripheral surface 22 Detachment device Main body 23 End face 24 Grip

Claims

A front shaft body having a hole communicating inside at the tip and fixing a clip on the outer peripheral surface thereof and a rear shaft body having a hole communicating inside at the rear end are integrated, and a rear shaft body is inside the rear shaft body. A fountain pen body with a built-in pen tip extension mechanism that allows the pen tip to move freely from the hole of the tip shaft body by hitting the knock part that protrudes freely from the hole part of the fountain pen, and the outer peripheral surface of the tip shaft body of the fountain pen body. In a knock-type fountain pen consisting of a clip to be fixed to
A plurality of protruding engaging portions are formed on the outer peripheral surface of the tip shaft body forming the fountain pen body.
The clip includes a clip body that holds a pocket of clothes and the like, and a grip portion that is fixed by gripping the tip shaft body of the fountain pen body, and engages with a plurality of engaging portions of the fountain pen body. It forms an engaged portion formed in a plurality of holes, and forms an engaged portion.
A plurality of engaging portions formed so as to project on the outer peripheral surface of the tip shaft body forming the fountain pen body, and a plurality of engaged portions formed in a hole shape in the grip portion of the clip are included in the clip. A fixed structure that allows the clip of a knock-type fountain pen to be attached and detached, which is characterized by elastically fixing the peripheral surface to the outer peripheral surface of the tip shaft body that forms the main body of the fountain pen.
Of the plurality of engaging portions formed so as to project on the outer peripheral surface of the front shaft body, at least one engaging portion is engaged in extending the entire length of the engaging portion along the direction of the central axis of the front shaft body. As a joint edge,
Of the plurality of engaged portions formed on the clip, at least one engaged portion is formed as an elongated engaging elongated hole having an opening in the tip direction.
The clip in the knock-type fountain pen according to claim 1, wherein the engaging elongated hole at the tip of the clip is slid and engaged with the engaging ridge edge of the tip shaft body. Fixed structure.
A desorption device main body having a semi-cylindrical shape having an inner peripheral surface having a curved surface shape that can be brought into close contact with the outer peripheral surface of the tip shaft body, and having an end face that abuts on the end face of the grip portion of the clip, and an end of the desorption device main body. Of the above claims 1 and 2, wherein the portion extends along the inner peripheral surface direction and integrally forms a grip portion that elastically grips the tip shaft of the knock-type fountain pen. A clip attachment / detachment device used in a fixed structure that allows the clip to be attached / detached in the knock type fountain pen described in any one of them.
The clip in the knock-type fountain pen according to claim 3, wherein the end face of the attachment / detachment device main body in contact with the end face of the grip portion of the clip has a tapered shape forming a slope in the contact direction. A clip attachment / detachment device used in a fixed structure that allows attachment / detachment.