JP2013091239A - Feed-type multicore writing utensil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a feed-type multicore writing utensil 1 capable of projecting the writing fore end of each writing utensil from a fore end port 3a along the shaft center of the shaft cylinder 4, in the feed-type multicore writing utensil 1 to project/retract the writing fore end of each of a plurality of writing utensils accommodated in a shaft cylinder 4 from the fore end port 3a of the shaft cylinder 4.SOLUTION: When a shaft cylinder 4 is set horizontal, one located on the upper side of a plurality of writing units 10A-10D is moved downwardly by its self weight, and the writing utensils 16A-16D of the writing units are matched with the shaft center of the shaft cylinder 4. By knocking a knock body 5, a pin body 14 of the writing unit located on the upper side is pushed by a push rod 9, and the writing fore end of the writing utensil is projected from the fore end port 3a along the shaft center of the shaft cylinder 4.

Description

  The present invention relates to a payout-type multi-core writing instrument in which writing tip portions of a plurality of writing bodies accommodated in a shaft tube are projected and retracted from a tip end of the shaft tube.

  Conventionally, the pay-out type multi-core writing instrument has a sliding operation of the presser exposed from the side surface of the shaft cylinder in the projecting operation, and the writing body connected to the presser is moved forward or rearward with respect to the front shaft. By rotating the shaft to rotate the cam crest provided in the rear shaft and advancing the writing body connected to the presser contacting the cam crest, the writing tip of the advanced writing body is moved to the tip of the shaft cylinder. A structure that protrudes from the end opening is adopted. Further, in general, in the payout type multi-core writing instrument, since a plurality of writing bodies are arranged at positions away from the axial center of the shaft cylinder in the radial direction, when the writing tip is protruded from the tip end, As described in JP-A-2001-121882, the refill (writing body) bends from the rear to the front toward the center of the shaft tube, and the writing tip protrudes in a state inclined from the tip opening, Since the writing tip portion of each writing body is inclined in a different direction and protrudes from the tip end, the user may feel uncomfortable at the time of writing.

JP 2001-121882 A

  In a feeding type multi-core writing instrument in which the writing tips of a plurality of writing bodies housed in the shaft tube are projected and retracted from the tip end of the shaft tube, the writing tips of each writing body protrude from the tip end along the axis of the shaft tube. A drawing type multi-core writing instrument that can be made is obtained.

The present invention
“In a feeding type multi-core writing instrument in which writing tip portions of a plurality of writing bodies accommodated in a shaft tube are projected and retracted from a tip end of the shaft tube, a cam groove is provided in the shaft tube, and a slide that moves back and forth along the cam groove is provided. A knock body having a moving projection and a rotating cam having a locking projection that slides on the cam groove and engages with a locking portion provided at a front end portion of the cam groove are formed on the knock body. An uneven meshing portion constituted by an inclined surface is disposed by meshing a meshed portion meshing with a meshing portion formed on the rotating cam, and between the rotating cam and the holding portion provided on the shaft tube. A spring body is provided to repel the rotary cam backward, and by pressing the knock body, the rotary cam and a push rod connected to the rotary cam can be moved back and forth, and a plurality of writing bodies and a holder body A spring body and a pin body that is urged rearward by the spring body are installed in the provided through hole. A plurality of writing units, each of which is formed by connecting the rear end portion of the writing body and the front end portion of the pin body integrally with each other, and is hooked in the center across the shaft cylinder. Arranged so that the holder main body is positioned between a front wall having a window and a rear wall, and latching projections projecting from front and rear end surfaces of the holder main body are provided on the latching windows of the front wall and the rear wall. The writing body and the pin body that are hooked project from the latching windows of the front wall and the rear wall, and the shaft cylinder is turned sideways, so that the upper part of the plurality of writing units is under its own weight. To move the writing body of the writing unit to the axial center of the shaft cylinder, and by knocking the knocking body, the pin body of the writing unit located at the upper part is pushed by the push rod, The writing tip of the cursive body is the axis of the barrel. Along structure can protrude from the tip end opening by feeding formula multicore writing instrument. "A.

In the present invention, it is preferable that the holder body is formed of a heavy metal such as brass so that the writing unit can easily move downward under its own weight in the shaft tube. When the writing unit moves downward under its own weight with the shaft tube turned sideways, it is important that the writing body of the writing unit moved downward can protrude straight into the tip end of the shaft tube. At this time, the center of the cursive body may be slightly deviated from the axis of the shaft cylinder. The tip of the push rod is aligned with the tip end of the shaft tube at the shaft center so that only the pin body connected to the writing body aligned with the shaft center of the shaft tube can be pushed.

  Since the feeding type multi-core writing instrument of the present invention has the structure as described above, the writing tip portion of each writing body can be projected from the tip opening along the axis of the shaft cylinder, and the writing tip portion of each writing body Protrudes straight from the tip, so that the user does not feel uncomfortable when writing.

FIG. 1 is a longitudinal cross-sectional view of the pay-out type multi-core writing instrument of this embodiment. FIG. 2 is a perspective view of the writing unit. FIG. 3 is an exploded view of the writing unit. FIG. 4 is a perspective view showing a part of the configuration of the pay-out type multi-core writing instrument. FIG. 5 is a diagram showing the positional relationship between the writing unit and the latching window in the shaft tube in the state of FIG. FIG. 6 is a longitudinal sectional view showing a state in which the shaft cylinder is turned sideways with the clip facing upward. FIG. 7 is a longitudinal sectional view showing a state in which the writing tip portion of the writing body is projected from the tip end of the shaft tube. FIG. 8 is a diagram illustrating the writing unit when the writing tip portion of the writing body is protruded from the tip end of the shaft tube. FIG. 9 is a diagram showing the positional relationship between the writing unit and the latching window in the shaft tube in the state of FIG.

  Hereinafter, with reference to the drawings, an embodiment of the payout type multi-core writing instrument in the present invention will be described. In addition, in order to make explanation easy to understand, the same number is attached | subjected about the same member and the same part in drawing. In the description of this embodiment, the front end side of the shaft cylinder is expressed as the front, and the opposite side is expressed as the rear.

  FIG. 1 is a longitudinal cross-sectional view of the pay-out type multi-core writing instrument according to the present embodiment, and shows a state where the tip end side of the shaft tube is faced down. The pay-out-type multi-core writing instrument 1 is configured with a shaft cylinder 4 by mounting a base 3 in front of a shaft cylinder main body 2 having a clip 2a formed on a side surface. A cam groove 2b is formed on the inner surface of the shaft cylinder body 2, and a knock body 5 having a sliding protrusion 5a that moves back and forth along the cam groove 2b, and the cam groove 2b are slid on the cam groove 2b. The rotating cam 6 having a locking projection 6a that locks to the locking portion 2c provided at the front end of the rotating cam 6 is connected to the concave-convex meshing portion 5b formed of an inclined surface formed on the knock body 5, and A meshed portion 6b that meshes with the formed meshing portion is meshed and disposed, and a coil spring 8 is disposed between the rotating cam 6 and the retaining portion 7a of the retaining cylinder 7 fitted inside the shaft cylinder 4. Thus, the rotating cam 6 is ejected rearward. Further, in this embodiment, the rotary cam 6 is formed with a recess 6c that opens to the front, and the rear end portion 9a of the push rod 9 is inserted into the small diameter portion 6d formed in the recess 6c to form the recess 6c. The hook portion 9b of the push rod 9 is brought into contact with the step portion 6e, and the hook portion 9b is bulleted at the rear end of the coil spring 8, so that the rotary cam 6 is bulleted rearward, and the knock body 5 is knocked. By operating, the rotary cam 6 and the push rod 9 connected to the rotary cam 6 are moved back and forth while being inserted through the window hole 7b of the holding cylinder 7.

  Next, the writing unit will be described with reference to FIGS. As shown in FIG. 4, the writing units 10A, 10B, 10C, and 10D are arranged radially with respect to the shaft center in the shaft cylinder, and FIG. 1 shows a state in which the writing unit 10A and the writing unit 10C face each other. is there. The writing unit 10A will be described in detail with reference to FIG. 2 and FIG. 3. The writing unit 10A is provided with a through hole 12 penetrating the front and rear in a holder main body 11 formed by fitting a holder front member 111 and a holder rear member 112. A coil holder 13 is formed by arranging a coil spring 13 and a pin body 14 in the through hole 12, and a ball pen refill 16A containing black ink is inserted from the front of the through hole 12 and a rear end portion of the ball pen refill 16A. A writing unit is formed by inserting the front end small-diameter portion 14a of the pin body 14 into the head. Further, the rear end portion 14b of the pin body 14 protrudes from the rear of the through hole 12, and the coil spring 13 is brought into contact with the flange portion 14c formed on the pin body 14 so as to be connected to the pin body 14 and the pin body 14. The ball-point pen refill 16A is urged rearward and the rear end portion 14b of the pin body 14 is pressed forward, so that the ball-point refill 16A moves forward against the elastic force of the coil spring 13 (see FIG. 8). 14 by releasing the pressing force of the rear end portion 14b of the pin 14, the flange portion 14c of the pin body 14 is brought into contact with the stepped portion 12a formed in the through hole 12 of the holder body 11 by the elastic force of the coil spring 13 (FIG. 2). The ballpoint pen refill 16A is retracted until the reference). The writing unit 10B includes a red ink ballpoint refill 16B, the writing unit 10C includes a blue ink ballpoint refill 16C, and the writing unit 10D includes a green ink ballpoint refill 16D. Since it is the same as A, description thereof is omitted.

  Next, the relationship between each writing unit and the shaft tube will be described with reference to FIGS. 1, 4, and 5. An annular member 17 having a front wall 17b in which a cross-shaped latching window 17a is perforated is mounted in the front interior of the shaft cylinder 4, and the center interior of the shaft cylinder 4 has the same shape as the retaining window 17a. An annular member 18 having a front wall 18b in which a retaining window 18a is perforated is mounted. A latching protrusion 11a projecting from the front end of the holder body 11 of each writing unit is latched on the latching window 17a of the front wall 17b, and the ballpoint pen refill 16A is projected from the latching window 17a. A latching projection 11b projecting from the rear end of the holder body 11 of each writing unit is latched on the stop window 18a, and the rear end portion 14b of the pin body 14 is projected from the latch window 18a. The annular member 17 and the annular member 18 are attached to the shaft cylinder 4 so that the positional relationship between the cross-shaped latching window 17a and the latching window 18a coincides with each other, and the latching protrusions 11a and 11b are provided. Each writing unit can be moved in the radial direction by moving in the latching windows 17a and 18a, and the front and rear ends of each holder body abut on the front wall 17b and the rear wall 18b, so The back and forth movement is regulated.

  Next, the state in which the pay-out type multi-core writing instrument of this embodiment is used will be described with reference to FIGS. As shown in FIG. 6, the pay-out type multi-core writing instrument 1 has the clip 2a facing upward and the shaft cylinder 4 turned sideways so that the writing unit 10A and the writing unit 10C move downward due to their own weights. The ballpoint pen refill 16C coincides with the axial center of the shaft cylinder 4, and the rotating cam 6 is advanced while the coil spring 8 is compressed by moving the knocking body 5 as shown in FIG. The push rod 9 advances the pin body 14 of the writing unit 10 </ b> C, and the writing tip portion 161 </ b> C of the ballpoint pen refill 16 </ b> C connected to the pin body 14 projects straight from the tip end 3 a of the base 3 along the axis of the shaft cylinder 4. I was able to. The relationship between the knock body 5, the rotary cam 6 and the cam groove 2b is the same as that of a knock type ballpoint pen using a general rotary cam. In the state shown in FIG. 7, the locking portion at the front end of the cam groove 2b is used. The locking projection 6a of the rotary cam 6 is locked to 2c, and the writing tip portion 161C of the ballpoint pen refill 16C can be maintained in a state protruding from the tip opening 3a, and writing is performed with the blue ink accommodated in the ballpoint pen refill 16C. It becomes possible. Although not shown in the figure, if the knock body 5 is knocked with the shaft cylinder 4 turned sideways and the clip 2a is directed downward, writing can be performed with black ink by the ballpoint pen refill 16A, and the clip 2a can be left. Alternatively, if the knocking body 5 is knocked toward the right, writing can be performed with red ink or green ink by the ballpoint pen refill 16B or the ballpoint pen refill 16D.

  When the knocking body 5 in the state shown in FIG. 7 is knocked again, the locking of the locking portion 2c at the front end of the cam groove 2b and the locking projection 6a of the rotating cam 6 is released, and the spring of the coil spring 8 is released. The rotating cam 6 and the push rod 9 are retracted by the generated force, and the pin body 14 of the writing unit 10C that has been pressed by the push rod 9 is retracted by the coil spring 13 that urges the collar portion 14c backward, and is connected to the pin body 14. The writing tip portion 161 </ b> C of the ball pen refill 16 </ b> C thus made can be immersed in the shaft cylinder 4.

  The feeding type multi-core writing instrument of the present invention can adopt a mechanical pencil, a marker or a solid core feeding body in addition to the ballpoint pen as the writing body, and the writing tip portion projects from the tip end without bending the writing body. Therefore, it is suitable for a cursive body such as a lead lead of a mechanical pencil or a crayon of a solid core feeding body that may cause an adverse effect on the contents contained in the cursive body.

1 ... pay-out type multi-core writing instrument,
2 ... shaft cylinder body, 2a ... clip, 2b ... cam groove, 2c ... locking part,
3 ... base, 3a ... tip,
4 ... shaft tube,
5 ... knock body, 5a ... sliding projection, 5b ... meshing part,
6 ... rotating cam, 6a ... locking projection, 6b ... meshed part,
6c ... concave portion, 6d ... small diameter portion, 6e ... step portion,
7 ... Holding cylinder, 7a ... Holding part, 7b ... Window hole,
8 ... Coil spring,
9 ... push rod, 9a ... rear end, 9b ... buttocks,
10A, 10B, 10C, 10D ... writing unit,
11 ... Holder body, 11a ... Hanging projection, 11b ... Hanging projection,
111 ... Holder front member, 112 ... Holder rear member,
12 ... through-hole, 12a ... step,
13 ... Coil spring,
14 ... Pin body, 14a ... Front end small diameter part, 14b ... Rear end part,
14c ...
15 ... Cursive holder,
16A, 16B, 16C, 16D ... ballpoint pen refill,
161A, 161B, 161C, 161D ... writing tip 17 ... annular member, 17a ... cross-shaped latching window, 17b ... front wall,
18 ... an annular member, 18a ... a cross-shaped retaining window, 18b ... a rear wall.

Claims (1)

In a pay-out type multi-core writing instrument in which writing tip portions of a plurality of writing bodies accommodated in a shaft tube are projected and retracted from the tip end of the shaft tube, a cam groove is provided in the shaft tube, and sliding is performed to move back and forth along the cam groove. A slant formed on the knock body with a knock body having a protrusion and a rotating cam having a locking protrusion that slides on the cam groove and engages with a locking portion provided at the front end of the cam groove. A meshed portion engaging with a meshing portion formed on the rotating cam is meshed with an uneven meshing portion constituted by a surface, and a spring is provided between the rotating cam and a holding portion provided on the shaft tube. The rotating cam and the push rod connected to the rotating cam can be moved forward and backward by pressing the knocking body, and a plurality of writing bodies and a holder body are provided. A spring body and a pin body urged rearward by the spring body are disposed in the through-hole. A plurality of writing units in which the formed writing body holder is integrally formed by connecting the rear end portion of the writing body and the front end portion of the pin body, and a latching window is formed in the center across the inside of the shaft cylinder. The holder main body is arranged so that the holder main body is positioned between the front wall and the rear wall having a hook, and hooking protrusions protruding from the front and rear end surfaces of the holder main body are hooked on the hooking windows of the front wall and the rear wall. The writing body and the pin body that are stopped and protrude from the latching windows of the front wall and the rear wall, and the shaft cylinder is turned sideways, so that the one located at the upper part of the plurality of writing units is lowered by its own weight. Move and match the writing body of the writing unit with the axial center of the shaft cylinder, and by knocking the knocking body, the pin body of the writing unit located at the upper part is pushed by the push rod, Set the writing tip of the cursive to the axis of the shaft Feeding type multifilamentary writing instrument structure can protrude from the tip opening I.

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