JP5908234B2 - Sliding multi-core writing instrument - Google Patents

Description

  The present invention relates to a slide-type multi-core writing instrument in which a plurality of writing bodies are accommodated in a shaft cylinder.

  In a multi-core writing instrument, Japanese Patent Application Laid-Open No. 2003-11583 “Sliding Multi-Core Writing Instrument” connects a sliding body provided with an operating portion at the rear of each writing body, and projects the operating portion outward of the shaft cylinder. By detachably attaching the operation unit to the sliding body, it is possible to select the wrong writing body when replacing with a writing body that suits the user's preference. A configuration that can be selected is disclosed.

  In addition, in Japanese Patent Application Laid-Open No. 2007-38635, “multi-core writing instrument”, an opening for opening a sliding groove rearward is provided at the rear end of the shaft cylinder, and the sliding body is opened from the inside of the shaft cylinder. A configuration is disclosed in which a lid is rotatably attached to an engaged portion such as a hinge provided on the shaft cylinder so that the lid body can be removed and inserted into the shaft cylinder.

  In the slide-type multi-core writing instrument as described above, it is necessary to provide a clip in view of being clamped in a pocket or the like.

JP 2003-11583 A JP 2007-38635 A

  By the way, in recent years, it has been desired to decorate the shaft cylinder such as colors, graphics, and patterns by screen printing, film transfer, or the like. However, when an engaged portion or a clip for engaging the lid is integrally provided at the rear end portion of the shaft tube, there is a problem that it is difficult to add color to the shaft tube.

  An object of the present invention is to provide a structure in which a shaft tube can be easily decorated in a slide-type multi-core writing instrument having a clip.

  In order to achieve the above object, the present invention provides a sliding body in which a plurality of writing bodies are urged and arranged in the axial direction by a coil spring in the axial cylinder, and connected to the rear part of each writing body. The sliding body is slidably housed in a sliding groove provided in the shaft cylinder, and an operating portion that protrudes outward from the sliding groove is integrally formed or attached to the sliding body, and the operating portion is arranged in the direction of the tip of the shaft cylinder. In the sliding multi-core writing instrument in which the protrusion of the writing body of the cursive body is maintained and the clip is attached to the rear end of the shaft tube, the clip extends at least in the longitudinal direction. A clip piece and a clip base on which the clip piece is mounted, and a mounting groove extending in the longitudinal direction is formed at a rear end portion of the shaft cylinder and at a position different from the sliding groove in the circumferential direction, An opening communicating with the rear of the mounting groove at the rear end of the shaft tube And a head crown at the rear end portion of the shaft tube, a rear end of the shaft tube being mounted so that it can be exposed and closed, and the clip base being mounted detachably from the opening at the rear end of the shaft tube. It is characterized by that.

  Moreover, the latching | locking part which protrudes toward the said clip piece is formed in the front-end | tip part of the said clip base, This latching | locking part protrudes from the shaft cylinder surface, It is characterized by the above-mentioned.

  In addition, the clip is always elastically pressed against the outer surface of the clip base by a coil spring disposed between the clip piece and the clip base, and the rear end of the clip piece is clipped. By pressing to the base side, the connecting portion between the clip piece and the clip base is used as a fulcrum, and the tip end portion of the inner wall of the clip piece is arranged to be detachable from the shaft cylinder with respect to the clip base.

  According to the configuration of claim 1 of the present invention, the clip includes at least a clip piece extending along the longitudinal direction and a clip base on which the clip piece is mounted, and a rear end portion of the shaft cylinder and the slide. A mounting groove extending along the longitudinal direction is formed at a position different from the moving groove in the circumferential direction, an opening communicating with the rear of the mounting groove is provided at the rear end of the shaft cylinder, and the rear end of the shaft cylinder The head crown is attached to the part so that the rear end of the shaft cylinder can be exposed and closed, and the clip base is detachably mounted from the opening at the rear end of the shaft cylinder, so that the shaft cylinder before the clip is attached When screen printing, especially film transfer, is performed on the outer surface of the lens, there is no large unevenness on the outer surface of the shaft tube between the sliding grooves and between the mounting groove and the sliding groove, and printing and transfer can be performed cleanly. Moreover, since a clip also consists of a clip piece and a clip stand, it is easy to decorate the clip piece, and the clip can be replaced with a clip that is decorated as desired by the user.

  According to the configuration of claim 2 of the present invention, a locking portion that protrudes toward the clip piece is formed at the tip of the clip base, and the locking portion protrudes from the surface of the shaft cylinder. The clamping force between the clip piece and the clip base can be increased without affecting the clip piece.

  According to the configuration of claim 3 of the present invention, the clip is always elastically pressed against the outer surface of the clip base by the coil spring disposed between the clip piece and the clip base. At the same time, by pushing the rear end of the clip piece toward the clip base, the tip of the inner wall of the clip piece can be separated from the shaft cylinder with respect to the clip base, with the connecting part between the clip piece and the clip base as a fulcrum. Therefore, the clamping force between the clip piece and the clip base can be increased, and the clip can be detached and used.

  The present invention can provide a structure in which a shaft tube can be easily decorated in a slide-type multi-core writing instrument having a clip.

1 is a longitudinal sectional view showing a multicore writing instrument of Example 1. FIG. It is AA sectional drawing in FIG. It is a figure which shows the state which removed the head crown and clip in FIG. It is an enlarged view which shows the crown and elastic member in FIG. It is the external view seen from the arrow F direction in FIG. It is an enlarged view which shows the clip in FIG.

  Next, examples of the slide type multi-core 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
1 to 6, the slide-type multi-core writing instrument 1 according to the first embodiment includes a plurality of male screw portions 2B of the front shaft 2 and a female screw portion 3E of the rear shaft 3 in a shaft body to which the male screw portion 2E is attached. (3) cursive letters are accommodated so as to be movable in the front-rear direction. A sliding body 6 having the same color as the ink for the writing instrument housed in the ink containing cylinder 10 of the writing body 9 is disposed at the rear part of the writing body 9, and the writing body 9 is urged rearward by a coil spring 17. Yes, the other writing body 13 is provided with a sliding body 22 of the same color as the ink for the writing instrument stored in the ink storage cylinder 14 of the writing body 13 at the rear part of the writing body 13 in the same manner as the writing body 9. is there. The other writing body provided with the sliding body 23 is not shown in detail, but is a slide-type multi-core writing instrument 1 of a conventionally known intrusion mechanism provided with three writing bodies.

  The writing body 9 will be described in detail. A writing portion composed of a ballpoint pen tip 12 that rotatably holds a φ0.5 mm ball is attached to the tip portion of the ink containing cylinder 10 via a chip holder 11. The ink container 10 contains a reversible thermochromic microcapsule pigment having an average particle diameter of 5 μm, and the ink viscosity at 1 rpm in an EM type rotational viscometer is 1020 mPa · s (25 ° C.) at 100 rpm. Water-based ink for writing instruments with an ink viscosity of 84 mPa · s (25 ° C) and a shear thinning index of 0.48, and a grease-like ink follower (not shown) at the rear end of this ink It is. The ink viscosity is preferably 40 to 200 mPa · s at 100 rpm and 20 ° C. in an EM type rotational viscometer.

  Three elongated sliding grooves 3A, 3B, 3C extending in the front-rear direction are formed in the rear portion of the rear shaft 3, and are formed at intervals of 120 degrees. The sliding grooves 3A, 3B, and 3C have openings 3AA, 3BA, and 3CA that are open at the rear and communicate with each other at the rear end of the rear shaft 3. The rear end portion of the rear shaft 3 has a substantially cylindrical shape, and film transfer is performed on the outer surface of the rear shaft 3 in advance.

  A substantially cylindrical spring support portion 7 is fixed inside the rear shaft 3. The spring support portion 7 has an inner hole through which three writing bodies such as the writing bodies 9 and 13 are inserted in the axial direction, and a coil spring 17 between the spring supporting portion 7 and each sliding body 6. Is arranged, and the writing body 9 and the sliding body 6 are urged rearward. Although not shown in the drawing, the other sliding bodies, like the sliding body 6, are provided with a coil spring between the spring support 7 and each sliding body, and the writing body and the sliding body are attached to the rear. It is energized.

  A concave mounting groove 3D extending along the longitudinal direction is formed between the rear portion of the rear shaft 3 and the sliding grooves 3B and 3C of the rear shaft 3, and a clip 20 is attached to the mounting groove 3D. It is. The mounting groove 3D has an opening 3DA at the rear end of the rear shaft 3, and the opening 3DA and the mounting groove 3D communicate with each other. The clip base 18 for mounting the clip piece 19 of the clip 20 is inserted into the mounting groove 3D, and the projection provided on the clip base 18 is pushed from the rear side of the rear shaft 3 to the front shaft 2 side. A clip base 18 is detachably attached to the rear shaft 3 by over-fitting with a protrusion provided on the rear shaft 3.

  Further, a male screw portion 3F is provided at the rear portion of the rear shaft 3, and a female screw portion 4A of the crown 4 is detachably attached to the male screw portion 3F by screw fitting. By removing the crown 4, the rear end of the rear shaft 3 can be exposed, and the writing instrument full length L can be shortened to the writing instrument full length M. In addition, the outer surface of the crown 4 is decorated by film transfer.

  An elastic portion 5 having rubber-like elasticity is attached to the crown 4. Specifically, the protrusion 5A of the elastic part 5 made of silicone rubber is mounted on the fitting protrusion 4B provided on the head crown 4 so as not to be easily removed by fitting. Further, at the end of screwing of the head crown 4, the distal end portion 5 </ b> B of the elastic portion 5 is in contact with the rear shaft 3.

  In order to cause the writing part 11 made of a ballpoint pen tip of the writing body 8 to protrude from the tip opening 2A of the front shaft 2, the operation part 6A of the sliding body 6 is moved along the sliding groove 3A to the tip opening of the front shaft 2. By sliding in the 2A direction, the engaging protrusion 6B formed on the sliding body 6 is locked to a locking portion (not shown) formed in the rear shaft 3, and the writing portion 11 of the writing body 9 is moved to the front shaft. The tip opening 2A can be selected to maintain the protrusion and can be written. In addition, the handwriting can be discolored by heat generated by pressing and rubbing the elastic portion 5 against the writing surface T.

  By sliding the operation portion 21A of the other sliding body 21 in the direction of the front end opening 2A of the front shaft 2 in a state where the writing portion 11 of the writing body 8 is kept protruding from the front end opening 2A of the front shaft, the sliding body The release protrusion 20 releases the sliding body 6 and the coil spring 17 can immerse the writing portion 11 of the writing body 8 into the front shaft 2.

  The clip 20 connects the clip piece 19 to a column 18 provided on the outer wall of the clip base 18 and is a coil spring disposed between the inner wall of the clip piece 19 and the clip table 18 and behind the column 18A. 21, the inner wall at the tip of the clip piece 19 is always elastically repelled on the outer surface of the outer wall of the clip base 18 and the rear end of the clip piece 19 is pressed toward the clip base 18 (in the direction of arrow G in FIG. 6). ), The inner wall of the tip end portion of the clip piece 19 is disposed so as to be separated from the clip base 18 with respect to the clip base 18 with the connecting portion as a fulcrum. Further, a locking portion 18 </ b> B that protrudes toward the clip piece 19 is formed at the tip of the clip base 18.

  From the state in which the crown 4 closes the rear end of the rear shaft 3, the screw fittings 3C and 4A between the rear shaft 3 and the crown 4 are removed, and the rear end of the rear shaft 3 is exposed. The sliding groove 3D has an opening 3DA at the rear end of the rear shaft 3, and the opening 3DA and the sliding groove 3D communicate with each other. Therefore, in this state, the clip 20 can be taken out. . Further, since the sliding grooves 3A, 3B, and 3C have openings 3AA, 3BA, and 3CA at the rear end of the rear shaft 3, the sliding body 6 is mounted from the rear of the rear shaft 3 before the head crown 4 is mounted. , 22 and 23 can be visually recognized, and an erroneous sliding body can be prevented from being disposed.

  In this embodiment, for convenience, three ballpoint pens are provided, but examples of the cursive include a ballpoint pen, a marking pen, and a mechanical pencil. Moreover, the number of cursive letters should just be two or more, and specifically, 2, 3, 4, 5, 6, etc. are mentioned.

  In this embodiment, for convenience, the rear end of the shaft tube can be freely opened and closed by screw-fitting the crown, but the method of attaching the crown is to form a hinge on the rear end of the shaft tube, Although it is not particularly limited, such as disposing the crown so as to be rotatable with respect to the shaft cylinder, it is preferable that the head crown is screwed to the rear end portion of the shaft cylinder to improve the assemblability.

  Also, the ink for writing instruments is not particularly limited, but the ink contains a pigment having an average particle size of 0.1 to 30 μm, and the ball has a longitudinal clearance of 30 to 80 μm per 100 m. When the consumption is 200 to 800 mg, a dark and good handwriting and a good writing feeling can be obtained. This is an ink whose ink consumption per 100 m is 200 to 800 mg in a water-based ink for writing instruments having a pigment with an average particle size of 0.1 to 30 μm when the longitudinal clearance of the ball is less than 30 μm. This is because it is difficult to increase the amount of consumption, and when it exceeds 80 μm, the amount of ink consumption is large and the handwriting drying property may be lowered, so that it is most preferably 30 to 80 μm.

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

DESCRIPTION OF SYMBOLS 1 Slide type multi-core writing instrument 2 Front shaft 2A Front end opening 3 Rear shaft 3A, 3B, 3C Sliding groove 3D Mounting groove 3DA Opening 3F Male screw part 4 Head crown 4A Female screw part 5 Elastic part 6, 22, 23 Slider 6A Operation part 7 Spring support part 9, 13 Writing body 10, 14 Ink storage cylinder 12, 16 Writing part 17 Coil spring 18 Clip base 18A Prop 18B Locking part 19 Clip piece 20 Clip

Claims (3)

A plurality of writing bodies arranged in the shaft cylinder and urged in the rear end direction of the shaft cylinder by a coil spring and a sliding groove provided in the shaft cylinder are slidably accommodated and connected to the rear part of each writing body. A sliding body, an operating portion that is integrally formed or attached to the sliding body and that protrudes outward from the sliding groove, and that the writing portion of the writing body protrudes by sliding the operating portion toward the distal end of the shaft cylinder. A sliding multi-core writing instrument comprising: a clip mechanism attached to a rear end portion of the shaft tube ; and a clip piece extending at least along a longitudinal direction, the clip It consists of a clip board for mounting the piece, the clip, the rear end of the barrel, and were formed at different positions on the slide groove and the circumferential direction, the mounting groove extending along the longitudinal direction, the clip base The protrusions provided are the protrusions provided in the mounting groove. The mounting groove is provided so as to be detachable by over-fitting. The mounting groove is provided so as to communicate with an opening provided at a rear end of the shaft tube, and a rear end portion of the shaft tube is provided at a rear end portion of the shaft tube. A slide-type multi-core writing instrument, wherein a crown for closing the end is detachably attached . The sliding multi-core writing instrument according to claim 1 , wherein a locking portion formed at a tip portion of the clip base and protruding toward the clip piece protrudes from a surface of the shaft cylinder. The clip is disposed such that the tip of the inner wall of the clip piece can be separated from the shaft cylinder with respect to the clip stand, with the connecting portion between the clip piece and the clip stand as a fulcrum, and between the clip piece and the clip stand. by the coil spring, sliding the multi-core writing instrument according to claim 1 or 2, characterized that you have elastically pressed against the tip always clip table of the outer surface of the clip piece.

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