JP2012240408A - Writing instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure allowing a crown to be easily mounted to a lid body and making the crown mounted to the lid body hardly come off by repetition of opening/closing of the lid body.SOLUTION: In this writing instrument, an engagement part formed at one end of a lid body is engaged with a hinge part formed on a clip formed integrally with the rear end of a barrel or attached to the barrel; the lid body is arranged rotatably with respect to the barrel; a fitting part of the lid body is detachably fitted to a fitting object part formed at the rear end of the barrel to allow the rear end of the barrel to be exposed and closed; and a bottomed crown is mounted to the lid body. In the writing instrument, an insertion hole making the inside and the outside of the crown communicate with each other is formed on a sidewall of the crown, and an insertion part formed on the lid body and extending in a direction nearly vertical to the axis of the lid body is inserted and mounted in the insertion hole of the crown.

Description

  The present invention relates to a writing instrument comprising a lid that exposes and closes the rear end of the shaft tube at the rear end of the shaft tube.

  In a writing instrument comprising a lid that exposes and closes the rear end of the shaft cylinder at the rear end of the shaft cylinder, in Japanese Patent Application Laid-Open No. 2007-38635 “Multi-core writing instrument”, An opening is provided to open the moving groove to the rear, and from the opening, the sliding body can be removed from the shaft tube and inserted into the shaft tube, and a lid is attached to the hinge provided on the shaft tube. A configuration that is movably mounted is disclosed.

JP 2007-38635 A

  By the way, the lid body engages an engaging portion provided at one end portion of the lid body with an engaged portion formed on an outer surface of the shaft cylinder or a clip attached to the shaft cylinder, and the lid body is engaged with the shaft cylinder. Since the shape of the lid is complicated, for example, it can be rotated with respect to the lid, so that the lid can be decorated, it is conceivable that the crown is attached to the lid, and the crown is attached to the lid. In general, the engaging portion provided on the lid is engaged with the engaged portion provided on the inner wall of the crown, and the crown is mounted so as to cover the lid.

  However, when the engaging part provided on the lid and the engaged part provided on the inner wall of the crown are engaged, the engaging part is released in the direction along the axis line by repeatedly opening and closing the lid. Since the force is applied, the engagement force between the lid and the crown may decrease, so it is necessary to set the initial engagement force high. As a result, it is difficult to wear the lid and the crown was there.

  An object of the present invention is to provide a structure in which the head crown is easily attached to the lid and the crown attached to the lid is difficult to come off by repeatedly opening and closing the lid.

  In order to achieve the above object, the present invention engages an engaging portion provided at one end portion of a lid body with a hinge portion formed integrally with a rear end portion of a shaft tube or formed on a clip attached to the shaft tube. The lid body is rotatably arranged with respect to the shaft cylinder, and the fitting portion of the lid body is detachably fitted to the fitting portion formed at the rear end portion of the shaft cylinder. And a writing instrument in which a rear end of the shaft tube is exposed and can be closed, and a bottomed crown is attached to the lid, and the inside and outside of the crown are communicated with the side wall of the crown. An insertion hole is provided, and an insertion portion formed in the lid body and extending in a direction substantially perpendicular to the axis of the lid body is inserted into the insertion hole of the crown and attached.

  The head crown is provided with a second insertion hole that communicates the inside and outside of the crown on the other side wall facing the axis of the crown and the side wall provided with the insertion hole. The second insertion part is inserted through the second insertion hole and is mounted.

  In addition, a distal end portion of the insertion portion of the lid body protrudes outward from the other insertion hole of the crown.

  In addition, the crown is made of a transparent or translucent resin, and the inner surface of the bottom wall of the crown is a polyhedron.

  According to the configuration of claim 1 of the present invention, the side wall of the crown is provided with an insertion hole that communicates the inside and outside of the crown, and is formed in the lid and is substantially perpendicular to the axis of the lid. By inserting and inserting the insertion portion that extends into the insertion hole of the crown, the lid body is repeatedly opened and closed, and even if force generated during opening and closing is applied to the lid body, the insertion hole and the insertion portion cause the lid to In order to suppress a reduction in the mounting force between the body and the crown, the mounting force between the lid and the crown can be made high or difficult to come off easily even if it is not fixed.

  Further, the fitting part formed in the crown and extending in a direction substantially perpendicular to the axis of the lid body is inserted through the insertion hole of the lid body, so that the crown crown has a bottomed shape. In the fitting between the lid and the crown, it is difficult to generate a force toward the axial center and / or a force that expands in the radial direction generated in the bottom wall of the crown, and there are few restrictions on the shape and material.

  According to the configuration of claim 2 of the present invention, the distal end portion of the insertion portion of the lid projects outward from the insertion hole of the crown, so that the projected portion becomes a handle, and the lid is opened and closed. The operation can be easily performed.

  According to the configuration of claim 3 of the present invention, the crown is connected to the side wall provided with the insertion hole and the other side wall facing the axis of the crown, and the second insertion is made to communicate the inside and outside of the crown. By providing a hole and attaching the second insertion part provided in the lid through the second insertion hole, the lid and the head crown can be more stably attached, and the insertion part is inserted into the second insertion part. By assembling through the insertion hole from the hole, the assemblability can be improved.

  According to the configuration of claim 3 of the present invention, the crown is made of a transparent or translucent resin, and the inner surface of the bottom wall of the crown is a polyhedron, so that the inner surface of the bottom wall of the crown is There is no mounting portion with the lid, and when the lid is viewed from the exterior, the visibility can be enhanced by the lens effect.

  In addition, synthetic resin materials, such as PP resin, POM resin, PC resin, ABS resin, etc. can be used for the lid body and the crown of the present invention. In particular, it is most preferable to use a relatively low-hardness resin material such as a POM resin or a PP resin for the lid in view of the over-fitting fit. In addition, it is most preferable to use a hard material having a hardness higher than that of the lid body, such as ABS resin or PC resin, for the crown, and in order to make the inner surface of the bottom wall of the crown a polyhedron, a PC resin having a high lens effect. Most preferably, is used.

  The present invention can provide a structure that makes it easy to attach the crown to the lid and prevents the crown attached to the lid from coming off easily by repeatedly opening and closing the lid.

It is an external view which shows the state which protruded the pen tip part of the writing instrument of Example 1. FIG. It is a figure which shows the state which opened the cover body at the time of pen point part immersion in Example 1. FIG. It is a figure which shows the state which removed the writing body and sliding body of the writing instrument of Example 1. FIG. It is a figure which shows the state which opened the cover body in FIG. It is a longitudinal cross-sectional view in FIG. FIG. 6 is an enlarged vertical cross-sectional view of a main part, partially omitted in FIG. 5. It is a figure which shows the cursive body in FIG. It is AA sectional drawing in FIG. It is BB sectional drawing in FIG. It is the perspective view seen from the rear end side of the rear axis. It is a figure which shows the assembly process of a cover body and a head crown. It is the external view seen from the lower side of Fig.11 (a). It is the external view seen from the lower side of FIG.11 (d).

  Next, embodiments of the writing instrument of the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments.

Example 1
The writing instrument 1 according to the first embodiment shown in FIGS. 1 to 13 accommodates a plurality of (four) writing bodies movably in the front-rear direction in a shaft cylinder body to which a front shaft 2 and a rear shaft 3 are screwed. Has been. A sliding body 9 having the same color as the ink for the writing instrument housed in the ink containing cylinder 15 of the writing body 14 is disposed at the rear part of the writing body 14, and the writing body 14 is urged rearward by the coil spring 12. Although the details of the other writing bodies are not shown in the drawing, the slide-type multi-core writing instrument of a conventionally known intrusion mechanism in which three writing bodies are arranged in the same manner as the writing body 14 is provided.

  The cursive body 14 is a ballpoint pen refill, and a pen tip portion 16 in which a ball is rotatably held is attached to the tip portion of the ink containing cylinder 15, and black shear thinning viscosity is provided inside the ink containing cylinder 15. The water-based gel ink and the ink follower are directly accommodated. Although not shown in the drawing, the other three writing bodies, like the writing body 14, are mounted with a pen tip portion made of a ballpoint pen tip at the tip of the ink containing cylinder, and are different in water-based gel ink from the writing body 14. And a ballpoint pen refill that directly accommodates the ink follower.

  Four elongated sliding grooves 3b, 3c, 3d, and 3e extending in the front-rear direction are formed in the rear portion of the rear shaft 3, and are formed at intervals of 90 degrees. The sliding grooves 3b, 3c, 3d, and 3e have openings 3ba, 3ca, 3da, and 3ea that are open at the rear and communicate with each other at the rear end 3a of the rear shaft 3.

  A substantially cylindrical spring support portion 8 is fixed in the rear shaft 3. The spring support portion 8 has an inner hole through which four writing bodies such as the writing body 14 are inserted in the axial direction, and a coil spring 12 between the spring support portion 8 and each of the sliding bodies 9 and 10. 13 are arranged, and the writing body and the sliding body are urged backward. Although not shown, the other two sliding bodies are also provided with a coil spring between the spring support portion 8 and each sliding body in the same manner as the sliding bodies 9 and 10, and the writing body and the sliding body. Is biased backwards.

  A concave mounting groove 3f extending along the longitudinal direction is formed at the rear portion of the rear shaft 3 and between the sliding grooves 3a and 3b of the rear shaft 3, and a clip 7 is attached to the mounting groove 3f. . Specifically, the mounting groove 3f has an opening 3fa at the rear end 3a of the rear shaft 3 in the same manner as the sliding groove 3a and the like, and the opening 3fa and the mounting groove 3f communicate with each other. A mounting portion 7b formed at the rear end portion of the clip 7 is inserted into the mounting groove 3f, and is pushed from the rear side of the rear shaft 3 to the front shaft 2 side, thereby providing a protrusion provided on the mounting portion 7b of the clip 7 (see FIG. The clip 7 is fixed to the rear shaft 3 by drop fitting over the protrusion 3fb provided in the mounting groove 3f.

  Further, a hinge portion 7a is formed at the rear portion of the clip 7, and the hinge portion 7a is provided at one end portion of the lid body 5 made of polypropylene and extends to the left and right when the clip 7 is viewed from the front. The lid 5 is rotatably engaged by engaging the portion 5a, and the rear end 3a of the rear shaft 3 can be exposed by rotating the lid 5.

  The lid 5 is equipped with a crown 6 made of polycarbonate, which is harder than the lid 5 and hardly deformed. Specifically, an insertion hole 6a that communicates with one side wall of the crown 6 inside and outside, and a second insertion hole that communicates the interior and exterior with the other side wall that faces the axis J3 of the one side wall and the crown 6a. 6b is provided, and the insertion portion 5b formed in the lid 5 and extending in a direction substantially perpendicular to the axis J2 of the lid 5 is inserted from the second insertion hole 6b into the insertion hole 6a and into the crown 6 The fitting projection 6c provided and the fitting projection 5c provided on the lid 5 are inserted until they are fitted over, and the insertion portion 5b of the head crown 5 and the first of the crown 6 are inserted into the insertion holes 6a of the crown 6. The crown 6 is mounted so as to cover the lid body 5 in a state where the second insertion portion 5d of the lid body 5 is positioned in the two insertion holes 6b. Further, in order to facilitate the opening / closing operation from the rear shaft 3 of the lid 5, the distal end portion of the insertion portion 5 b protrudes outward from the insertion hole 6 a as a handle.

  In addition, a slit 6d is formed in the second insertion hole 6c, and the fitting projection 6c provided on the head crown 6 and the fitting projection 5c provided on the lid 5 are easily passed over and fitted. . Moreover, the opening area of the second insertion hole 6b is larger than that of the insertion hole 6a. The insertion part 5b of the lid body 5 can be easily inserted into the second insertion hole 6b, and the lid body 5 and the crown 6 are positioned. Since the insertion portion 5b can be inserted into the insertion hole 6a in the state, the assemblability can be improved.

  The crown 6 is a bottomed colored translucent, and is a polyhedron composed of a plurality of faces 6 e obtained by diamond-cutting the inner surface of the bottom wall of the crown 6.

  Further, a fitting convex portion 5e is formed at the center of the shaft portion of the lid body 5 and is formed at the rear end portion of the rear shaft 3 when the lid body 5 closes the rear end 3a of the rear shaft 3. The lid 5 and the crown 6 are fitted to the rear shaft 3 so that the lid 5 and the crown 6 can be freely opened and closed by fitting the fitting convex portion 5e over the fitting convex portion 3h of the shaft portion 3g protruding rearward. It is.

  In order to project the pen tip portion 16 made of a ballpoint pen tip of the writing body 14 from the tip opening portion 2a of the front shaft 2, the operation portion 9a of the sliding body 9 is opened along the sliding groove 3b. By sliding in the direction of the portion 2a, the engaging projection 9b formed on the sliding body 9 is locked to a locking portion (not shown) formed in the rear shaft 3, and the pen tip portion 16 of the writing body 14 is moved. The protrusion can be maintained by selecting from the front end opening 2a of the front shaft. The sliding body 9 is provided with a release protrusion 9c.

  By sliding the operation portion 10a of the other sliding body 10 in the direction of the front end opening 2a of the front shaft 2 while the pen tip portion 16 of the writing body 14 is maintained protruding from the front end opening 2a of the front shaft, The release protrusion of the moving body 10 releases the locking of the sliding body 9 via the sleeve 11, and the pen tip portion 16 of the writing body 14 can be immersed in the front shaft 2.

  In order to replace the writing body 14, the lid 5 presses the handle at the tip of the insertion portion 5b backward (in the direction of arrow F in FIG. 1) from the state where the rear end 3a of the rear shaft 3 is closed, and the lid 5 is disengaged from the fitting convex portion 3h of the shaft portion 3g of the rear shaft 3, and the lid body 5 is rotated (in the direction of arrow G in FIG. 3). The end 3a is exposed. At this time, even if the insertion portion 5b is pressed backward (in the direction of arrow F in FIG. 1), the fitting force between the crown 6 and the lid 5 is not reduced by the insertion hole 6a.

  When the lid 5 is rotated and the rear end 3a of the rear shaft 3 is exposed, the sliding bodies 9, 10 (others not shown) are moved from the sliding grooves 3b, 3c, 3d, 3e to the coil springs 12, 13 respectively. It protrudes to the rear exterior by the rear biasing (others are not shown). By taking out the sliding body 9 from this state, the writing body 14 connected to the sliding body 9 is taken out from the rear shaft 3, and then a new writing body (not shown) and a new writing body are connected to each other. The sliding body is inserted into the rear shaft 3 through the sliding groove 3b whose rear end is open. Then, the lid body 5 is rotated forward, and then fitted with the fitting convex portion 5e of the lid body 5 and the fitting convex portion 3h of the rear shaft 3, and the rear end 3a of the rear shaft 3 is closed. As a result, the replacement work of the writing body and the sliding body is completed, so that the user can replace the writing body and the sliding body corresponding to the user's preference in the shaft cylinder, and the writing body and the sliding body can be quickly and reliably stored. Can be replaced.

  In this embodiment, for convenience, the lid is rotated and the rear end of the rear shaft is exposed, and the writing body and the sliding body can be replaced. However, the lid is rotated and the rear end of the rear shaft is exposed. In addition, there is no particular limitation as long as the rear end of the rear shaft is exposed by rotating the lid, such as filling a lead core, and the cursive replacement work or lead without losing the lid The core can be filled.

  Further, the place where the insertion hole is formed is not particularly limited, but the handle of the insertion part described above is relative to the engagement part between the engagement part of the lid and the hinge part provided on the clip with respect to the axis of the shaft cylinder body. Most preferably, it is formed at a position on the symmetrical side because the lid can be easily opened and closed.

  Furthermore, although the shape of the bottom wall of the crown is not particularly limited, it is preferable to enhance the decorativeness by making the inner surface of the bottom wall transparent or translucent as a polyhedron such as diamond cut, and the outer surface of the bottom wall of the crown is also the inner surface. As a polyhedron similar in shape to a polyhedron and having a different size, it is preferable to further enhance the decorativeness.

  In addition, the method of inserting the lid through the insertion hole of the lid and the insertion part of the crown is not particularly limited, such as uneven fitting, ride-over fitting, and press-fitting fitting, but it is difficult to assemble and release. In consideration of the above, it is preferable to use a crossover fitting. Further, the insertion portion and the insertion hole may be directly fitted, or the insertion portion may be fitted at another portion as long as the insertion portion is inserted through the insertion hole. Furthermore, the cross-sectional shape of the insertion hole is not particularly limited, such as a circle or a quadrangle, but at least the cross-sectional shape of the distal end portion of the insertion portion is substantially the same shape as the other insertion hole, so that it becomes rattled after mounting. This is preferable because it is difficult to cause the above problems.

  The writing instrument of the present invention is not limited to the type of multi-core writing instrument or ink, and can be widely implemented as a writing instrument.

DESCRIPTION OF SYMBOLS 1 Writing instrument 2 Front shaft 2a Front opening 3 Rear shaft 3a Rear end 3b, 3c, 3d, 3e Sliding groove 3ba, 3ca, 3da, 3ea Opening portion 3f Mounting groove 3fa Opening portion 3fb Protrusion 3h Fitting convex portion 5 Lid 5a fitting part 5b protrusion 5c fitting protrusion 5d second insertion part 6 head crown 6a insertion hole 6b second insertion hole 6c inner wall surface 6d slit 6e inner surface of bottom wall 7 clip 7a hinge part 7b attachment part 8 spring support part 9, 10 Sliding body 9a, 10a Operation part 11 Sleeve 12, 13 Coil spring 14 Writing body 15 Ink storage cylinder 16 Pen tip part

Claims (4)

An engaging portion provided at one end of the lid is engaged with a hinge formed integrally with the rear end of the shaft tube or formed on a clip attached to the shaft tube, and the lid is rotated with respect to the shaft tube. The fitting portion of the lid body is movably disposed and is detachably fitted to the fitting portion formed at the rear end portion of the shaft cylinder, so that the rear end of the shaft cylinder is exposed and A writing instrument that can be closed and has a bottomed crown attached to the lid, and is provided on the side wall of the crown with an insertion hole that communicates the inside and outside of the crown. A writing instrument, wherein an insertion portion extending in a direction substantially perpendicular to the axis of the lid is inserted through the insertion hole of the crown. The writing instrument according to claim 1, wherein a distal end portion of the insertion portion of the lid projects outward from the other insertion hole of the crown. A second insertion hole is provided in the lid, wherein the crown is provided with a second insertion hole that communicates the inside and outside of the crown on the other side wall facing the side wall provided with the insertion hole and the axis of the crown. The writing instrument according to claim 1 or 2, wherein an insertion portion is inserted through the second insertion hole. The said crown is made of transparent or translucent resin, The inner surface of the bottom wall of the said crown is made into the polyhedron which consists of several surfaces, The any one of Claim 1 thru | or 3 characterized by the above-mentioned. Writing instruments.

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