JP2013091258A - Feed-type multicore writing utensil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a feed-type multicore writing utensil 1 which is capable of projecting a writing fore end of each writing utensil from a fore end port 3a along the shaft center of a 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 the shaft cylinder 4 from a fore end port 3a of the shaft cylinder 4.SOLUTION: A rotary writing unit 10 is turned in a shaft cylinder 4 while hooking projections 111a-111c of a holder body 11 are hooked to supporting projection parts S1-S3 projected inward of a locking window 17a. When any one of three writing utensils 16A-16C of the rotary writing unit 10 is matched with the shaft center of the shaft cylinder 4, and the knock body 5 is knocked, and the writing fore ends 161A-161C of the writing utensils are 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. In the structure in which the three writing bodies are radially accommodated in the shaft cylinder, each of them is inclined 120 degrees differently and protrudes from the tip end.

JP 2001-121882 A

  In a payout-type multi-core writing instrument in which the writing tips of the three 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 from the tip end along the axis of the shaft tube A feeding type multi-core writing instrument that can be projected is obtained.

The present invention
“In a pay-out type multi-core writing instrument in which the writing tip of three writing bodies accommodated in the shaft tube protrudes and retracts from the tip end of the shaft tube, a cam groove is provided in the shaft tube and moves back and forth along the cam groove. A knock body having a sliding protrusion and a rotating cam having a locking protrusion that slides on the cam groove and engages with an engaging portion provided at a front end of the cam groove are formed on the knock body. An engaging portion that is engaged with the engaging portion formed on the rotating cam is meshed with the uneven engaging portion that is formed by the inclined surface, and is disposed between the rotating cam and the holding portion provided on the shaft tube. A spring body is provided on the rotary cam, the rotary cam is ejected rearward, and the knock body is pressed to enable the rotary cam and the push rod connected to the rotary cam to be moved back and forth. Is provided on each of the three corners of the holder body, which is approximately triangular and is elongated along the axis. A writing body holder formed by arranging a spring body and a pin body biased rearwardly by the spring body in each through hole, and connecting the rear end portion of the writing body and the front end portion of the pin body. A rotating writing unit integrally formed so that the holder main body is positioned between a front wall and a rear wall having a latching window in the center and crossing the inside of the shaft cylinder, and the holder main body A hooking projection projecting around the through hole of the front wall is hooked to a hooking window on the front wall and the rear wall, and the writing body and the pin body protrude from the hooking window on the front wall and the rear wall, By rotating the shaft cylinder around the axis in a state where the shaft cylinder is in the horizontal direction, the rotary writing unit is moved into the shaft cylinder while the latch protrusion of the holder body is hooked on the support protrusion protruding inward of the latch window. The three cursive letters of the rotary writing unit One pin is made to coincide with the axis of the shaft cylinder, and then the knock body is knocked to push the pin body connected to the writing body that coincides with the axis of the shaft cylinder with the push rod. Then, a drawing type multi-core writing instrument having a structure in which the writing tip portion of the writing body can protrude from the tip end along the axis of the shaft cylinder.

  In the present invention, the holder body is made of a heavy metal such as brass so that the rotary writing unit can easily rotate in the shaft tube and the latch protrusion of the holder body can be easily caught on the support protrusion of the front latch window. It is preferable to mold. The outer shape of the holder main body and the inner surface shape of the shaft cylinder are such that when one of the three cursives is straightened to the tip end of the shaft cylinder when the shaft cylinder is rotated sideways with the shaft cylinder turned sideways, It is important to enable the protrusion to be protruded at this time, and 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 portions of the three writing bodies accommodated in the shaft cylinder can be projected from the tip opening along the axis of the shaft cylinder, Since the writing tip of each cursive body protrudes straight from the tip, the user does not feel uncomfortable at the time of 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 diagram schematically showing a feeding-type multi-core writing instrument in the state of FIG. 1 in a cross section. FIG. 3 is an exploded view of the rotary 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 schematically showing a cross section of a state in which the shaft cylinder of the pay-out type multi-core writing instrument shown in FIG. 1 is turned sideways. FIG. 6 shows a state rotated 15 degrees to the right from the state of FIG. FIG. 7 shows a state rotated 15 degrees to the right from the state of FIG. FIG. 8 shows a state rotated 15 degrees to the right from the state of FIG. FIG. 9 shows a state rotated 15 degrees to the right from the state of FIG. FIG. 9 shows a state rotated 15 degrees to the right from the state of FIG. FIG. 11 shows a state rotated 15 degrees to the right from the state of FIG. FIG. 12 shows a state rotated 15 degrees to the right from the state of FIG. FIG. 13 shows a state rotated 15 degrees to the right from the state of FIG. FIG. 14 is a longitudinal sectional view of the pay-out type multi-core writing instrument in the state of FIG. FIG. 15 is a longitudinal sectional view showing a state in which the writing tip portion of the writing body protrudes from the tip end of the shaft tube. FIG. 16 is a diagram showing the rotary writing unit when the writing tip portion of the writing body is projected from the tip end of the shaft tube.

  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 rotary writing unit will be described with reference to FIGS. The rotary writing unit 10 of this embodiment has three corners of a holder main body 11 formed by fitting a holder shaft body 111 and a holder lid body 112 which are substantially triangular in cross section and formed long along the axis. The through holes 12a, 12b, and 12c are formed on the side, and the coil springs 131, 132, and 133 and the pin bodies 141, 142, and 143 are arranged in the through holes to form the writing body holder 15, and the through holes 12a The ballpoint pen refill 16A containing black ink is inserted from the front, the front end small diameter portion 141a of the pin body 141 is inserted into the rear end portion of the ballpoint pen refill 16A, and the ballpoint refill 16B containing red ink from the front of the through hole 12b. And the front end small diameter portion 142a of the pin body 142 is inserted into the rear end portion of the ballpoint pen refill 16B, and the front end of the through hole 12c is inserted. With inserting the ballpoint refill 16C accommodating the Luo blue ink, and inserted the front small-diameter portion 143a of the pin body 143 to the rear end of the ballpoint pen refill 16C, it is formed with rotational writing unit 10.

  Further, rear end portions 141b, 142b, and 143b of the pin bodies 141, 142, and 143 are projected from the rear of the through holes 12a, 12b, and 12c, and coil springs are formed on the flange portions 141c, 142c, and 143c formed in each pin body. The pin bodies 141, 142, 143 and the ballpoint pen refills 16A, 16B, 16C connected to the pin bodies are urged rearward by abutting 131, 132, 133, and the rear end portions 141b, 142b, 143b of the respective pin bodies are urged. By pressing forward, the ballpoint pen refill connected to the pin body pressed against the resilient force of the coil springs 131, 132, 133 moves forward (see FIG. 16), and the rear end portion 141b of the pin body, By releasing the pressing force of 142b, 143b, the flanges 141c, 142c, 142c of each pin body are generated by the elastic force of the coil springs 131, 132, 133. 43c has a structure in which each ballpoint pen refill to a position abutting the bottom surface of the holder lid 112 (see FIG. 4) is retracted.

  Next, the relationship between the rotary writing unit 10 and the shaft cylinder 4 will be described. An annular member 17 provided with a front wall 17b having a latching window 17a (see FIG. 4) having openings 171a, 172a, 173a radially extending in three directions is attached to the front inside of the shaft cylinder 4, An annular member 18 having a rear wall 18b formed with a latching window 18a (see FIG. 4) having openings 181a, 182a, 183a having the same shape as the latching window 17a is mounted inside the center of the cylinder 4. It is. Cylindrical latching protrusions 111a, 111b, and 111c projecting around the through holes 12a, 12b, and 12c at the front end of the holder body 11 are latched on the latching window 17a of the front wall 17b. The ballpoint pen refills 16A, 16B, and 16C are further protruded, and a cylindrical latching protrusion 112a that protrudes around the through holes 12a, 12b, and 12c at the rear end of the holder main body 11 on the retaining window 18a of the rear wall 18b. 112b, 112c are latched, and rear end portions 141b, 142b, 143b of the pin bodies are projected from the latching 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 opening portions 171a, 172a, 173a and the opening portions 181a, 182a, 183a matches each other. The longitudinal movement of the holder body 11 is restricted by the front and rear end portions coming into contact with the front wall 17b and the rear wall 18b. In FIG. 2, the pay-out type multi-core writing instrument 1 in the state of FIG. 1 is schematically shown in cross section, and the holder main body 11 of the rotary writing unit 10 is protruded inward of the latching window 17a of the front wall 17b. It abuts on the support protrusion S1 and the support protrusion S2.

  Next, the state which uses the pay-out type multi-core writing instrument 1 of a present Example is demonstrated using FIGS. 5 to 13 schematically show, in cross section, a state in which the rotary writing unit 10 is rotated 120 degrees by 15 degrees within the shaft cylinder 2 by rotating the shaft cylinder 4 clockwise around the axis. The latching protrusion 111a of the holder body 11 is filled, the latching protrusion 111b is vertically half-finished, and the latching protrusion 111c is hollowed out so that the movement can be easily understood. 5 to 13, the movement of the rotary writing unit 10 and the annular member 17 in front of the shaft cylinder 4 will be described. In the central portion of the shaft cylinder 4, the rotating writing unit 10 and the annular member 18 Has become the same movement.

  FIG. 5 shows a state in which the shaft cylinder 4 of the pay-out type multi-core writing instrument 1 shown in FIG. 1 is turned sideways. In this state, the space between the hooking protrusion 111a and the hooking protrusion 111c of the holder body 11 is shown. The support member is supported by a support protrusion S3 that protrudes inwardly from the retaining window 17a of the annular member 17. From the state shown in FIG. 5 to the state shown in FIG. 10 in which the shaft cylinder 4 is rotated to the right by 75 degrees, the feeding type multi-core writing instrument 1 of the present embodiment has a support protrusion between the hooking protrusion 111a and the hooking protrusion 111c. When the rotation is performed in a state where S3 is hooked and further rotated 15 degrees from FIG. 10 to 90 degrees from the state of FIG. 5 to the state of FIG. 11, the latching protrusion 111c is supported by gravity. The latching protrusion 111a slides down from the support protrusion S3 while separating from the protrusion S3. In the state of FIG. 12, which is further rotated 15 degrees from FIG. 11 and rotated from the state of FIG. 5 by 105 degrees, when the state of FIG. 11 to FIG. The holder main body 11 falls within the shaft cylinder 4 while rotating rightward as a fulcrum, and the latching protrusion 111c and the latching protrusion 111b are supported by the support protrusion S2 at the drop position. If the rightward rotation is further 15 degrees from FIG. 12 and 120 degrees from the state of FIG. 5, the filled hooking protrusion 111 a is in the state of FIG. FIG. 14 is a longitudinal sectional view of the pay-out type multi-core writing instrument 1 in the state of FIG. 13, in which the latching protrusion 111a, the ballpoint pen refill 16A and the pin body 141 are arranged in alignment with the axis.

As shown in FIG. 15, by rotating the knock body 5 of the pay-out type multi-core writing instrument 1 in the state of FIG. 14, the rotary cam 6 moves forward while compressing the coil spring 8, and the push bar 9 moves forward together with the rotary cam 6. Advances the pin body 141 of the rotary writing unit 10 and causes the writing tip portion 161A of the ballpoint pen refill 16A connected to the pin body 141 to project straight from the tip end 3a 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. 15, the locking portion at the front end of the cam groove 2b. The locking projection 6a of the rotating cam 6 is locked to 2c, and the writing tip portion 161A of the ballpoint pen refill 16A can be maintained in a state of protruding from the tip opening 3a, and writing is performed with the black ink accommodated in the ballpoint pen refill 16A. It becomes possible. Although not shown in the drawing, when the shaft cylinder 4 is further rotated clockwise by 120 degrees around the axis from the state shown in FIG. 13, the hooking protrusion 111 c that has been hollowed out is now centered on the shaft cylinder 4. The ball pen refill 16C located in the latching protrusion 111c is in a matched state,
Writing can be performed with blue ink. From the state shown in FIG. 13, when the shaft cylinder 4 is further rotated to the right by 240 degrees around the axis, this time, the latching projection 111b, which is half-painted vertically, becomes the shaft cylinder. Thus, writing can be performed with red ink by the ballpoint pen refill 16B located on the latching protrusion 111b. When the shaft cylinder 4 is rotated leftward about the axis, the rotary writing unit 10 performs the reverse movement inside the shaft cylinder 2.

  When the knocking body 5 in the state shown in FIG. 15 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 141 of the rotary writing unit 10 that has been pressed by the push rod 9 is retracted by the coil spring 131 that urges the flange portion 141c backward, and the pin body 141 It is possible to immerse the writing tip portion 161 </ b> A of the connected ballpoint pen refill 16 </ b> A into the shaft cylinder 4 again.

  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,
10 ... Rotary writing unit,
11 ... Holder body,
111 ... Holder shaft,
111a, 111b, 111c ... latching projections,
112 ... Holder lid,
112a, 112b, 112c ... latching protrusions,
12a, 12b, 12c ... through holes,
131, 132, 133 ... coil springs,
141, 142, 143 ... pin bodies,
141a, 142a, 143a ... front end small diameter part,
141b, 142b, 143b ... rear end,
141c, 142c, 143c ... buttocks,
15 ... Cursive holder,
16A, 16B, 16C ... ballpoint pen refill,
161A, 161B, 161C ... writing tip 17 ... annular member,
17a ... retaining window, 17b ... front wall,
171a, 172a, 173a ... opening,
S1, S2, S3 ... support protrusions,
18 ... an annular member,
18a ... retaining window, 18b ... front wall,
181a, 182a, 183a ... openings.

Claims (1)

In a pay-out type multi-core writing instrument in which writing tip portions of three 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 disposed to repel the rotary cam backward, and by pressing the knock body, the rotary cam and the push rod connected to the rotary cam can be moved back and forth, and the three writing bodies and the cross section are Provided on each of the three corners of the holder body, which is substantially triangular and elongated along the axis. A writing body holder formed by disposing a spring body and a pin body biased backward by the spring body to the through hole, and connecting the rear end portion of the writing body and the front end portion of the pin body An integral rotary writing unit is arranged so that the holder main body is positioned between a front wall and a rear wall having a latching window in the center and traversing the inside of the shaft cylinder, and the holder main body A hooking protrusion protruding around the through hole is hooked on a hooking window on the front wall and the rear wall, and the writing body and the pin body protrude from the hooking window on the front wall and the rear wall, and the shaft The rotary writing unit is moved within the shaft tube while the tube body is rotated around the shaft while the tube body is turned sideways, while the hook protrusion of the holder body is hooked on the support protrusion protruding inward of the hook window. Rotate the three writing units of the rotary writing unit One pin is made to coincide with the axis of the shaft cylinder, and then the knock body is knocked to push the pin body connected to the writing body that coincides with the axis of the shaft cylinder with the push rod. And the drawing type multi-core writing instrument of the structure which can make the writing front-end | tip part of the said writing body protrude from a front-end | tip opening along the axial center of the said axial cylinder.

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