JP2011011375A - Coupling structure of writing body and sliding member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure in which a shaft of a writing body can be easily caulked to be fixed to a sliding member and the writing body can rock and incline to the sliding member.SOLUTION: A connecting part 11e which is loosely fitted in a shaft 10a of a writing body 10 is prepared in a lower part of a sliding member 11. A contact part 11f which contacts with an upper end edge 10d of the shaft 10a and inclination parts 11g and 11h which incline from the contact part 11f are formed in an upper part position of the connecting part 11e. After making the connecting part 11e of the sliding member 11 loosely fit to the shaft 10a, the upper end edge 10d of the shaft 10a is made to contact with the contact part 11f, and the connecting part 11e is caulked from a side face of the shaft 10a to rockingly fix the shaft 10a to the sliding member 11.

Description

  The present invention is a slide in which a writing body having a cylindrical shaft portion made of metal is accommodated in a shaft tube having a tip opening portion at a front tapered portion and connected to a rear end of the shaft portion. The present invention relates to a feeding type multi-core writing instrument that causes a writing tip of a writing body to protrude and retract from a tip opening of a shaft cylinder by moving a member back and forth.

  Conventionally, a plurality of writing bodies are accommodated in a shaft tube of a writing instrument, and a slider protruded from the side surface of the shaft tube is moved back and forth, or a rear shaft is rotated with respect to a front shaft to rotate an internal rotary cam. Thus, a feeding-type multi-core writing instrument having a structure in which a writing tip of a writing body is projected and retracted from a tip opening of a shaft cylinder is well known. In both the structure for moving the slider back and forth and the structure for rotating the rear shaft relative to the front shaft, a sliding member made of a resin material is connected to the rear part of the writing body. A structure in which a plurality of writing bodies accommodated in the shaft cylinder can be exchanged according to the user's preference by opening and closing a lid body connected to the rear end portion of the shaft cylinder by a hinge as disclosed in JP-A-38635 There is a slide payout type multi-core writing instrument in the market. As a writing instrument in the writing instrument having the structure described in Japanese Patent Application Laid-Open No. 2007-38635, a ballpoint pen, a mechanical pencil, a marker pen, or the like is considered. In particular, since a mechanical pencil can be easily erased, it is strongly required to be incorporated into a writing instrument having a structure with the above-mentioned lid from students and office workers who often write on notebooks and notebooks.

  By the way, in a structure in which a plurality of cursive bodies are accommodated in one shaft cylinder, it is necessary to set the axial diameter of each cursive body thinly, in order to prevent the mechanical pencil from breaking the core, or an ink with low light resistance inside. In many ballpoint pens containing a shaft, a shaft member formed of a metal pipe is often used as the shaft portion of the cursive body. Since the shaft part made of this metal pipe is easy to fix by caulking utilizing the good workability of metal, a method of fixing the shaft part by caulking to the sliding member connected to the back of the cursive body is adopted Has been. In a multi-core writing instrument using a shaft portion made of such a metal pipe as a writing body, a writing tip portion is used to cause a plurality of writing bodies accommodated in the shaft tube to appear and disappear from the tip opening portion of the shaft tube one by one. A structure in which the writing body can be inclined with respect to the sliding member is required so that is directed toward the tip opening.

  FIG. 12 shows a conventional connecting structure of a cursive body having a metal pipe as a shaft portion and a sliding member, and the shaft portion 50a with respect to the sliding member 51 is an arrow in the figure with a caulking portion 50e as a fulcrum. In the step of caulking and fixing the shaft portion 50a of the cursive body and the connecting portion 51e of the sliding member 51 so as to be able to tilt by swinging in the direction, the upper end edge 50d of the shaft portion 50a is shown in FIG. It is necessary to provide a clearance (K) between the sliding member 51 and the seat 51f of the sliding member 51 and perform crimping with the crimping punch 100, which is troublesome.

JP 2007-38635 A

  An object of the present invention is to provide a structure in which the shaft portion of the writing body can be easily caulked and fixed to the sliding member, and the writing body can swing and tilt with respect to the sliding member.

The present invention
“A sliding member in which a writing body having a cylindrical shaft portion made of metal is accommodated in a shaft tube having a tip opening portion at a front tapered portion and connected to a rear portion of the shaft portion. In the connecting structure between the writing body and the sliding member in the drawing type multi-core writing instrument in which the writing tip of the writing body protrudes and retracts from the tip opening of the shaft cylinder by moving back and forth, the lower part of the sliding member Provided with a connecting portion loosely fitted inside the shaft portion of the cursive body, an abutting portion that contacts the upper edge of the shaft portion at an upper position of the connecting portion, and an inclined portion that is inclined upward from the corresponding contact portion The connecting portion of the sliding member is loosely fitted to the shaft portion, and the upper end edge of the shaft portion is brought into contact with the contact portion, and the connecting portion is formed from the side surface of the shaft portion. The shaft member is slidably fixed to the sliding member by caulking so that the shaft member is moved to the sliding portion. Coupling structure between cursive and the sliding member upper edge of the shaft portion, characterized in that the inclined to the inclined portion when tilted with respect to. "A.

  The inclined portion formed on the sliding member is inclined and inclined so that the shaft portion of the writing body can be inclined toward the tip opening portion of the shaft tube in a state where the writing tip protrudes from the tip opening portion of the shaft tube. It is important to form horns.

  Since the present invention has the structure described above, since the connecting portion of the sliding member is loosely fitted to the shaft portion of the cursive body, the sliding member and the cursive body can swing relative to each other based on the crimped portion. When the shaft member is inclined with respect to the sliding member, the upper end edge of the shaft portion of the writing body is inclined toward the inclined portion side of the sliding member, so that the shaft portion of the writing body is not bent at the intermediate portion, The writing tip of the body can be made to appear and disappear from the tip opening of the shaft tube.

FIG. 1 is a perspective view of a state in which a mechanical pencil body and a ballpoint pen body are removed, which is a payout type multi-core writing instrument of the present embodiment. FIG. 2 is a cross-sectional view of the feeding type multi-core writing instrument of the present embodiment. FIG. 3 is a cross-sectional view of a state in which the ballpoint pen body is operated. FIG. 4 is a perspective view of a state in which the mechanical pencil body is operated. FIG. 5 is a cross-sectional view of a state where the mechanical pencil body is operated. 6 is an enlarged cross-sectional view of a main part of FIG. FIG. 7 is a perspective view of FIG. FIG. 8 is a diagram showing a process of fixing the shaft portion of the cursive body and the sliding member by caulking. FIG. 9 is a diagram illustrating a state in which the shaft portion of the cursive body and the sliding member are fixed by caulking. FIG. 10 is a diagram illustrating a state in which the cursive body is mounted on the shaft cylinder. FIG. 11 is a perspective view of a main part of FIG. FIG. 12 is a view showing a state in which the writing body is rotated with respect to the sliding member in the conventional structure. FIG. 13 is a diagram showing a process of fixing the shaft portion of the writing body and the sliding member by caulking with a conventional structure.

  Hereinafter, embodiments of a pay-out type multi-core writing instrument employing the present invention will be described with reference to the drawings. In addition, the same number is attached | subjected about the same member and the same component in drawing. In the description of this embodiment, the lower side of the drawing is expressed as the front, and the opposite side is expressed as the rear.

  As shown in FIGS. 1 and 2, the pay-out type multi-core writing instrument 1 is disposed behind a barrel body 4 formed by screwing a female screw portion 2 a of the front shaft 2 and a male screw portion 3 a of the rear shaft 3. Three cutout windows 3b, 3c, 3d opened in a direction along the axis are formed and connected to the rear part of the mechanical pencil body 10, the ballpoint pen body 20, and the ballpoint pen body 40 accommodated in the shaft cylinder 4. In this structure, the sliding members 11, 21, 41 integrated with each other are slidably disposed in the cutout windows 3b, 3c, 3d. In FIG. 2, the mechanical pencil body 10 and the ball-point pen body 20 are shown in cross section, and the ball-point pen body 40 is omitted.

  The mechanical pencil body 10 is disposed by inserting a shaft portion 10a made of a metal pipe into a coil spring 5a in the rear shaft 3 and a through hole 6a formed in the bottom surface 61 of the partition wall member 6 mounted in the rear shaft 4. It is. Further, the ball-point pen body 20 is disposed by inserting a shaft portion 20 a made of a resin pipe into a coil spring 5 b in the rear shaft 3 and a through hole 6 b formed in the bottom surface 61 of the partition wall member 6 mounted in the rear shaft 3. It is. In this embodiment, the coil springs 5 a and 5 b are brought into contact with the bottom surface 61 of the partition wall member 6 and the support portions 11 a and 21 a of the sliding members 11 and 21, so that the mechanical pencil body 10 and the ballpoint pen body 20 are located behind the shaft tube 4. It is as a structure that bounces. A mechanical pencil feeding mechanism 10b is provided in front of the shaft portion 10a of the mechanical pencil body 10, and a ball-point pen tip 20b is provided in front of the shaft portion 20a of the ball pen body 20.

  As shown in FIG. 1, the rear portion of the shaft cylinder 4 in the present embodiment has a base portion 7 a of the clip 7 extending from the rear portion of the rear shaft 3, and a lid of the lid 8 on the upper portion of the base portion 7 a of the clip 7. A leg portion 8b extending from the main body portion 8a is held as a rotatable hinge structure. The lid body 8a is provided with two latching holes 8c. When the lid body 8a is closed, the two latching claws 3e formed on the rear shaft 3 are latched with the lid body 8a. It is latched in the hole 8c and pressed by the lid body 8a so that the mechanical pencil body 10 and the ballpoint pen body 20 which are repelled by the coil springs 5a and 5b in the shaft cylinder 4 shown in FIG. is there.

  Next, the feeding operation in the slide feeding type multi-core writing instrument of the present embodiment will be described. As shown in FIG. 3, the ball-point pen body 20 in which the protrusion 21 b of the sliding member 21 has been advanced has the ball-point pen tip 20 b protruding from the tip opening 2 b provided on the front shaft 2 of the shaft cylinder 4. More specifically, in a state where the ballpoint pen tip 20b of the ballpoint pen body 20 protrudes from the front end opening 2b of the front shaft 2, the locking projection 21c formed on the rear inner side of the sliding member 21 is an inner surface of the rear shaft 3. The ball-point pen tip 20b can be kept in a state of protruding from the tip opening 2b of the shaft tube 4 by being locked to the locking receiving portion 3f formed in the above. Since the shaft portion 20a of the ballpoint pen body 20 is formed of a flexible resin pipe, and the press-fit portion 21e of the sliding member 21 is press-fitted into the shaft portion 20a of the ballpoint pen body 20, a ballpoint pen tip is used. As shown in FIG. 3, the shaft member 20 a is inclined with respect to the sliding member 21 when the shaft 20 b is directed toward the tip opening 2 a side of the shaft cylinder 4, as shown in FIG. 3.

  Further, from the state of FIG. 3, the protrusion 11 b of the sliding member 11 is slid forward so that it is locked to the locking receiving portion 3 f of the rear shaft 3 by the locking release protrusion 11 d formed on the sliding member 11. The rear end of the sliding member 11 is released by releasing the locking projection 21c of the sliding member 21 and immersing the ballpoint pen tip 20b of the ballpoint pen body 20 into the shaft cylinder 4 and further moving the sliding member 11 forward. The locking projection 11c formed on the portion is locked to the locking receiving portion 3f of the rear shaft 3, and the tip 10c of the mechanical pencil body 10 is connected to the tip opening 2b of the shaft tube 4 as shown in FIGS. It can be maintained in a state of protruding from. Such an appearance operation can be repeatedly performed by sliding the protrusions of the sliding members protruding from the cutout windows 3b and 3c of the rear shaft 3. The lead lead feeding mechanism 10b of the mechanical pencil body 10 of this embodiment is brought into contact with the inner surface of the front shaft 2 with the front of the lead lead feeding mechanism 10b through the shaft portion 10a by knocking the sliding member 11. The description is omitted because it is a general mechanical pencil mechanism that feeds a lead core (not shown) from the tip 10c.

  Next, the connection structure between the writing body and the sliding member in this embodiment will be described with reference to FIG. 6 is an enlarged view of a main part in a state where the mechanical pencil body shown in FIG. 5 is operated, and FIG. 7 is a perspective view. A connecting portion 11e that is loosely fitted inside the shaft portion 10a of the mechanical pencil body 10 is provided at a lower portion of the sliding member 11 of the present embodiment, and an upper end edge of the shaft portion 10a is located above the connecting portion 11e. An abutting portion 11f that abuts on the central portion of 10d and inclined portions 11g and 11h that incline upward on both sides with the abutting portion 11f as a base point are formed. As shown in FIG. 5, in a state where the mechanical pencil body 10 is operated, the tip portion 10c faces the tip opening 2a side of the shaft tube 4, and as shown in FIG. 10a is inclined with respect to the caulking portion 10e as a fulcrum. However, as described above, since the inclined portion 11g is provided in the sliding member 11, the shaft member 10a is inclined with respect to the sliding member 11. In this case, the upper end edge 10d of the shaft portion 10a can be inclined toward the inclined portion 11g, and the shaft portion 10a made of a metal pipe of the mechanical pencil body 10 is inclined as shown in FIG. The state where 10c protruded could be maintained.

  Next, with reference to FIGS. 8 and 9, a process of crimping the shaft portion of the writing body on the sliding member will be described. In this embodiment, as shown in the figure, the connecting portion 11e of the sliding member 11 is loosely fitted to the shaft portion 10a, and the upper end edge 10d of the shaft portion 10a is brought into contact with the contact portion 11f of the sliding member 11. Positioning was performed, and caulking was performed from both side surfaces of the shaft portion 10a with the caulking punch 100. As shown in FIG. 9, a caulking portion 10e was provided, and the sliding member and the shaft portion were coupled so as to be able to swing.

Next, a description will be given of mounting the mechanical pencil body 10 and the ballpoint pen body 20 in the shaft cylinder 4 with reference to FIGS. 10 and 11. In this embodiment, as shown in FIG. 10, when the ballpoint pen body 20 is attached to the shaft cylinder 4, the support portion 21a of the sliding member 21 comes into contact with the locking receiving portion 3f. As shown in FIG. 5, the shaft portion 20a made of a resin pipe was bent, and the sliding member 21 could be mounted while being bent in the arrow V direction.
Further, when the mechanical pencil body 10 is mounted on the shaft cylinder 4, as shown in FIGS. 10 and 11, the sliding member 11 is inclined with respect to the shaft portion 10a with the crimping portion 10e as a fulcrum. In this embodiment, since the sliding member 11 is provided with the inclined portion 11h, when the sliding member 11 is inclined with respect to the shaft member 10a, the upper end edge 10d of the shaft portion 10a is on the inclined portion 11g side. The sliding member 11 could be mounted while being bent in the direction of the arrow W without deformation of the shaft portion 10a made of a metal pipe.

  The relationship between the shaft portion 10a of the mechanical pencil body 10 and the sliding member 11 in this embodiment is such that the contact portion 11f of the sliding member 11 coincides with the center of the shaft portion 10a of the mechanical pencil body 10. In addition, since the caulking portion 10e of the shaft portion 10a is rotated about the fulcrum, the contact portion 11f of the sliding member 11 and the upper end edge 10d of the shaft portion 10a are rubbed when rotated. The contact portion 11f of the sliding member 11 made of a resin material can be adapted to the shaft portion 10a by the upper end edge 10d of the shaft portion 10a made of a metal pipe. Therefore, in this case, the contact portion 11f may have an acute angle that can be easily cut, or the tip of the contact portion 11f may be a small protrusion.

In the present invention, an input pen having a resin chip at the tip as disclosed in JP-A-7-290885 or a stick-shaped eraser as shown at JP-A-2007-38635 is drawn out from the tip as a writing body. It can be used for a structure that can be accommodated in a shaft cylinder, such as an eraser feed body having a structure.

1 ... pay-out type multi-core writing instrument,
2 ... front shaft, 2a ... female screw part, 2b ... tip opening,
3 ... rear shaft, 3a ... male screw part, 3b, 3c, 3d ... notch window,
3e ... latching claw, 3f ... locking receiving part,
4 ... The barrel body,
10 ... mechanical pencil body, 10a ... shaft part, 10b ... feeding mechanism,
10c ... the tip,
10d ... upper edge, 10e ... caulking part,
11 ... sliding member, 11a ... support part, 11b ... projection,
11c: locking protrusion, 11d: locking releasing protrusion, 11e: connection portion,
11f ... contact part, 11g, 11h ... inclined part,
20 ... Ballpoint pen body, 20a ... Shaft, 20b ... Ballpoint pen tip,
21 ... sliding member, 21a ... support portion, 21b ... projection,
21c: locking protrusion, 21d: locking releasing protrusion, 21e: press-fit portion,
40 ... ballpoint pen body, 41 ... sliding member,
5a, 5b ... coil springs,
6 ... partition member, 61 ... bottom surface, 6a, 6b ... through hole,
7 ... clip, 7a ... base,
8 ... Lid, 8a ... Lid body, 8b ... Leg, 8c ... Retaining hole.

Claims (1)

A writing body having a cylindrical shaft portion made of metal at the rear is accommodated in a shaft tube having a front opening portion at a front tapered portion, and a sliding member connected to the rear portion of the shaft portion is moved forward and backward. In the connecting structure of the writing body and the sliding member in the feeding type multi-core writing instrument in which the writing tip of the writing body is projected and retracted from the tip opening of the shaft tube by moving the writing body, the writing is provided at a lower portion of the sliding member. Provided with a connecting part loosely fitted inside the shaft part of the body, a contact part contacting the upper end edge of the shaft part and an inclined part inclined upward from the corresponding part are formed above the connection part Then, the connecting portion of the sliding member is loosely fitted to the shaft portion, the upper end edge of the shaft portion is brought into contact with the contact portion, and the connecting portion is caulked from the side surface of the shaft portion. The shaft member is fixed to the sliding member so as to be swingable, so that the shaft member becomes the sliding member. Coupling structure between cursive and the sliding member, characterized in that tilting the upper edge of the shaft section into the inclined portion when tilted against.

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