JP2008307803A - Double-headed rotation delivery type multi-refill writing implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a delivery type multi-refill writing implement of a double-headed structure which is given a feel of high grade and has a construction enabling selective projection of a single writing tip of a required writing body on the occasion of the use. <P>SOLUTION: In a shaft tube wherein the one-end shaft and the other-end shaft positioned opposite to each other are connected rotatably by an intermediate shaft, two sliding tubes having a plurality of sliding grooves are provided fixedly respectively on the one-end shaft side and the other-end shaft side, and the writing bodies in a plurality each having a sliding body fitted to the rear part thereof are so disposed in each of the sliding grooves of the sliding tubes as to be resilient in the direction opposite to the writing tips of the writing bodies, while cam parts with cam slants which are displaced in the direction along the axis of the shaft tube are provided inside the intermediate tube on both the one-end shaft side and the other-end shaft side. By rotating the intermediate shaft for the one-end shaft or the other-end shaft, the sliding body is advanced in sliding contact with the cam slant of the intermediate shaft and the writing tip of the writing body to which the sliding body is fitted is projected from a tip opening part provided in the one-end shaft or the other-end shaft, in this structure. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a double-head rotary payout type multi-core writing instrument having a structure in which a tip opening is provided at both ends of a shaft cylinder, and a plurality of writing bodies accommodated therein are projected from the tip opening of the shaft cylinder.

2. Description of the Related Art Conventionally, writing instruments having a structure in which a plurality of writing bodies accommodated in a shaft cylinder are projected from the tip opening portion of the shaft cylinder at the time of use are well known. When it is desired to increase the number, a structure in which the writing body is projected using both ends of the shaft cylinder is suitable as disclosed in Japanese Utility Model Laid-Open No. 4-135388 and Japanese Utility Model Laid-Open No. 1-156088. In this way, the structure in which the cursive body protrudes using both ends of the shaft cylinder is compared with the writing instrument having the structure in which the writing tip of the cursive body projects from only one of the shaft cylinders, and the same number of cursive bodies are accommodated. The shaft diameter can be reduced.
“Japanese Utility Model Publication No. 4-135388” "Japanese Utility Model Publication No. 1-156088"

  By the way, what is disclosed in Japanese Utility Model Laid-Open No. 4-135388 is interlocked with the slide button by advancing the slide button protruding from the long hole provided on the side surface of the shaft tube along the long hole. The writing tip of the writing body is a structure that protrudes from either end of the shaft cylinder, but such a slide-type feeding structure is currently used in low-cost writing instruments, It was difficult to give a feeling.

  Moreover, what is disclosed in Japanese Utility Model Laid-Open No. 1-156088 is a structure in which the shaft cylinder is divided into two at the center, and is provided symmetrically by rotating one shaft with respect to the other shaft. Rotating the cam slant at the same time, and the writing tip of the writing body of different colors from the tip opening at both ends of the shaft cylinder simultaneously protrudes. There is a risk that the user may get dirty or hurt if the user is not careful when paying out the cursive.

  In view of these problems, the present invention provides a double-headed pay-out type multi-core writing instrument with a high-class feeling and a structure that can selectively project only the writing tip of a necessary writing body in use. The purpose is to provide.

The present invention
“1. A double-head rotary payout-type composite writing instrument having a structure in which a plurality of writing bodies are accommodated in a shaft cylinder, and the writing body is projected from a tip opening provided at one end side and the other end side of the shaft cylinder. The two sliding cylinders having a plurality of sliding grooves are connected to the one end shaft side and the other end in a shaft cylinder in which one end shaft and the other end shaft, which are at the position of the counter electrode, are rotatably connected by an intermediate shaft. A plurality of writing bodies, each fixed to the shaft side and fitted with a sliding body at the rear part of each sliding groove of the sliding cylinder, are elastically repelled in the direction opposite to the writing tip of the writing body. Cam portions having cam inclined surfaces that are displaced in the direction along the axis of the shaft cylinder inside the intermediate shaft are provided on both sides of the one end shaft side and the other end shaft side, and the intermediate shaft is By rotating with respect to the one end shaft or the other end shaft, the sliding body is brought into sliding contact with the cam inclined surface of the intermediate shaft, and the sliding body The writing tip of the mounted cursive, one end shaft or double disk rotating pay-out type multifilamentary writing instrument, wherein the structure to be projected from the distal end opening provided at the other end shaft.
2. A position where a plurality of marks corresponding to a plurality of writing bodies in the shaft cylinder are provided on the one end shaft and the other end shaft, and a writing tip of the writing body is extended to both ends of the intermediate shaft according to the position of the mark. Item 2. The double-head rotary payout type multi-core writing instrument according to item 1, wherein a mark for alignment is provided. "
It is.

  More specifically, a sliding cylinder is fixed to both the one end shaft and the other end shaft, a sliding body is attached to each of the plurality of writing bodies, and the sliding body is arranged in a sliding groove formed in the sliding cylinder. The projecting portion provided on the sliding body is arranged so as to protrude from the sliding groove, and the engaging portion formed on both sliding cylinders is engaged with the intermediate shaft positioned between the one end shaft and the other end shaft. It is configured to be rotatably locked to the stopper portion. In addition, when the one end shaft and the other end shaft are detachable with respect to the intermediate shaft, for example, when the writing body is a ballpoint pen, the ballpoint pen can be replaced when the ink runs out. In this case, it is preferable to adopt a press-fitting structure so that the ballpoint pen body can be easily attached and detached from the sliding body. Further, the elastic body that repels the writing body in the direction opposite to the writing tip of the writing body only needs to have a resilient force in the direction along the axis of the shaft cylinder, and for example, a coil spring or the like can be used easily. Can do. Further, the cam portion is provided with a mountain-shaped cam portion, and the cam slope and the protrusion of the sliding body are slidably contacted, and the protrusion is advanced against the elastic force of the elastic body by the inclination of the cam slope. To do. Furthermore, by providing a protrusion on the outer surface of the intermediate shaft, it becomes easy to perform a rotating operation when the writing material is drawn out, and the shaft tube is difficult to roll when the writing instrument is placed on a desk or the like.

  In addition, in the item 2, the mark provided on the one end shaft and the other end shaft is printed with a paint having the same color as the ink color of the ball pen body or the ink color when the writing body is a colored ball pen body. It is good to provide the character which shows. The mark provided on the intermediate shaft preferably has a shape such as a triangle, an arrow, or a bar-like vertical line that has a thin tip and can be easily aligned with the marks on the one end shaft and the other end shaft.

  Since the present invention is a rotary feed-out type, it can have a high-class feeling as a writing instrument, and by using two heads, the thickness of the shaft diameter can be suppressed even if a plurality of writing bodies are accommodated in the shaft cylinder, Since the one end shaft and the other end shaft can rotate independently with respect to the intermediate shaft, only the writing tip of the target writing body can be selected and protruded. Furthermore, by providing a mark on one end shaft and the other end shaft that can identify the cursive that is projected during feeding, and providing a mark for alignment on the intermediate shaft side, the user can mark for alignment. While holding an intermediate shaft, it will be rotated by holding either the one end shaft or the other end shaft, so accidentally holding both the one end shaft and the other end shaft at the same time, rotate the writing tip from both ends Can be prevented from protruding.

  Next, description will be made with reference to the drawings. In the present embodiment, a double-headed rotary multi-core writing instrument in which four ballpoint pens of four different colors of red, blue, black and green are accommodated in the shaft cylinder will be described. However, the present invention is not limited to the following embodiments. Absent. The same members and the same parts in the drawings are denoted by the same reference numerals. In order to make the explanation easier to understand, the left side of the drawing is described as one end side and the right side is described as the other end side.

  FIG. 1 is a diagram of a double-headed rotary writing instrument that is an embodiment of the present invention. As shown in FIG. 1, the shaft cylinder 2 of the writing instrument 1 has one end shaft 3, an intermediate shaft 4, and the other end shaft 5. An annular member 6 provided with a protrusion 6 a is attached to the center of the intermediate shaft 4. Although details will be described later, the one end shaft 3 and the other end shaft 5 are rotatable with respect to the intermediate shaft 4. The one end axis side mark M1 and the other end axis side mark M2 of the triangle that can be seen on the surface of the intermediate shaft 4 are a writing body (not shown) accommodated in the shaft cylinder 2 and the tip opening 3a of the one end shaft 3 and the other end shaft. 5 is a mark for alignment when it is fed out from the front end opening 5a, and is used for alignment with the red mark “R” provided on the one end shaft 3 and the black mark “B” provided on the other end shaft 5. It is. Although not shown, the blue mark “L” is opposite to the red mark “R” on the one end shaft 3, and the green mark “L” is opposite to the black mark “B” on the other end side 5. G ".

  FIG. 2 is a longitudinal sectional view of this embodiment. As shown in FIG. 2, the shaft cylinder 2 of the present embodiment has one end side inner shaft 7 made of hard resin and the other end side inner shaft 8 provided with one end shaft side grip 9 and other end shaft side grip 10 made of an elastic material. The annular member 6 is sandwiched between the grip 9 on the one end side and the grip 10 on the other end side, and the inner tube 7 on the one end side and the inner end on the other end side are connected to the connecting tube 11 disposed in the center of the shaft tube 2. The shaft 8 is integrated by press-fitting. The annular member 6 has a structure that is difficult to turn due to frictional contact between the one end side grip 9 and the other end side grip 10. The one end shaft 3 is provided with a sliding cylinder 12 in which a locking portion 12a is locked to a locking receiving portion 7a formed inside the one end side inner shaft 7. In the sliding cylinder 12, a male screw portion 12 b formed in front of the sliding cylinder 12 is screwed to a female screw portion 3 b formed on the inner surface of the one end shaft 3, and the intermediate shaft 4 is connected to the one end shaft 3. By rotating, the intermediate shaft 4 can be rotated with respect to the sliding cylinder 12. Similarly, the other end shaft 5 is provided with a sliding cylinder 13 in which a locking portion 13a is locked to a locking receiving portion 8a formed inside the other end side inner shaft 8. In the sliding cylinder 13, a male screw part 13 b formed in front of the sliding cylinder 13 is screwed to a female screw part 5 b formed on the inner surface of the other end shaft 5. The intermediate shaft 4 can be rotated with respect to the sliding cylinder 13 by rotating.

  The sliding cylinder 12 at one end is formed with two sliding grooves 12c and 12d. The sliding groove 12c has a red ballpoint pen 14 and the sliding groove 12d has a blue ballpoint pen. 15 are arranged to be elastically ejected in the opposite direction of the tip opening 3a by coil springs 16 and 17, respectively. The sliding cylinder 13 on the other end shaft side is formed with two sliding grooves 13c and 13d. The sliding groove 13c has a black ballpoint pen 18 and the sliding groove 13d has a green color. The ball-point pen body 19 is elastically disposed by coil springs 20 and 21 in the direction opposite to the tip opening 5a. In addition, sliding bodies 22, 23, 24, and 25 are attached to the respective ballpoint pen bodies, and the protrusions 22a, 23a, 24a, and 25a formed on the respective sliding bodies are connected to the sliding grooves 12c, 12d, 13c, It protrudes from openings 12e, 12f, 13e, 13f formed in 13d. The projecting portions 22a and 23a are brought into contact with a cam portion 7c having a cam slope 7b formed on the inner surface of the one end side inner shaft 7 and displaced in the axial direction, and the projecting portions 24a and 25a are arranged on the other end side inner shaft. 8 is in contact with a cam portion 8c having a cam inclined surface 8b formed in the axial direction and displaced in the axial direction. As shown in the figure, the cam portion 8c is symmetrical with the cam portion 7c.

  Next, the feeding operation in the writing instrument of the present embodiment will be described. As shown in FIG. 3, by rotating the intermediate shaft 4 clockwise with respect to the one end shaft 3 (in the direction of arrow S in FIG. 1), the cam slope 7 b in contact with the protrusion 22 a of the slide body 22 rotates. The writing tip 14a of the red ball-point pen body 14 can be projected from the tip opening 3a of the one end shaft 3 while the coil spring 16 is compressed, and the tip end outer surface of the one end side inner shaft 7 has a triangular shape. The one end shaft side mark M1 (see FIG. 1) formed by exposing the formed protrusion 7e through the triangular hole 9a formed in the one end side grip 9 is a red mark “R” (see FIG. 1) on the one end shaft 3. Thus, the protrusion 22a of the sliding body 22 is locked to the tip notch 7d of the cam portion 7c, and the protruding state of the writing tip 14a of the red ballpoint pen body 14 can be maintained. On the contrary, the writing tip 15a of the blue ball-point pen body 15 can be protruded from the tip opening 3a of the one-end shaft 3 by rotating the intermediate shaft 4 counterclockwise with respect to the one-end shaft 3 (direction of arrow T in FIG. 1).

  Further, as shown in FIG. 4, by rotating the intermediate shaft 4 to the right with respect to the other end shaft 5 (in the direction of arrow V in FIG. 1), the cam inclined surface 8b contacting the protrusion 25a of the sliding body 25 is rotated. Thus, the sliding body 25 is advanced, and the writing tip 19a of the green ballpoint pen body 19 can be protruded from the tip opening 5a of the other end shaft 5 while compressing the coil spring 21, and the tip of the other end side inner shaft 8 is projected. The other end side mark M2 (see FIG. 1) formed by exposing the triangular protrusion 8e formed on the outer side surface from the triangular hole 10a formed on the other end side grip 10 is a green mark “ By adjusting to “G” (not shown), the protrusion 25a of the sliding body 25 is locked to the tip notch 8d of the cam portion 8c, and the protruding state of the writing tip 19a of the green ballpoint pen body 19 can be maintained. did it. On the other hand, the writing tip 18a of the black ball-point pen body 18 can be protruded from the tip opening 5a of the other end shaft 5 by rotating the intermediate shaft 4 counterclockwise with respect to the other end shaft 5 (in the direction of arrow U in FIG. 1). .

  Incidentally, the one end shaft side mark M1 and the other end side mark M2 of the present embodiment are the projections 7e, 8e of the one end side inner shaft 7 and the other end side inner shaft 8 with respect to the holes 9a, 10a provided in the grips 9, 10, respectively. Therefore, when the shaft cylinder 2 is gripped, the grips 9 and 10 can be prevented from rotating.

  The double-head rotary payout type multi-core writing instrument according to the invention of the present application can accommodate a ball-point pen body having a different writing line width in addition to a ball-point pen body of a different color in the shaft tube as in the above-described embodiment. It is also possible to improve the performance, or to use it for a cursive body having other functions such as a marker and a lead core feeding tool. In addition to writing instruments, the present invention can also be used for cosmetic tools and applicators.

It is a figure of the double-headed rotation feeding type writing instrument which is an Example of this invention. It is a longitudinal cross-sectional view of a present Example. It is sectional drawing which shows the state of an internal mechanism when an intermediate shaft is rotated clockwise with respect to an end shaft. It is sectional drawing which shows the state of an internal mechanism when an intermediate shaft is rotated rightward with respect to the other end shaft.

Explanation of symbols

1 ... writing instrument, 2 ... shaft,
3 ... one end shaft, 3a ... tip opening, 3b ... female screw,
4 ... Intermediate shaft,
5 ... other end shaft, 5a ... tip opening, 5b ... female screw part,
6a ... projection, 6 ... annular member,
M1 ... one end shaft side mark, M2 ... other end side mark,
7 ... Inner shaft on one end side, 7a ... Lock receiving portion, 7b ... Cam slope, 7c ... Cam portion,
7d: tip notch, 7e: protrusion,
8 ... Inner shaft on the other end side, 8a ... Lock receiving portion, 8b ... Cam slope, 8c ... Cam portion,
8d ... notch at the tip, 8e ... projection,
9 ... one end side grip, 9a ... hole, 10 ... other end side grip, 10a ... hole,
11 ... Connecting cylinder,
12 ... sliding cylinder, 12a ... locking part, 12b ... male screw part, 12c, 12d ... sliding groove,
12e, 12f ... opening,
13 ... sliding cylinder, 13a ... locking part, 13b ... male screw part, 13c, 13d ... sliding groove,
13e, 13f ... opening,
14 ... A red ballpoint pen,
15 ... Blue ballpoint pen body, 15a ... Writing tip,
16, 17, 20, 21 ... coil springs,
18 ... Black ballpoint pen body, 18a ... Writing tip,
19 ... green ballpoint pen, 19a ... writing tip,
22, 23, 24, 25 ... sliding body,
22a, 23a, 24a, 25a ... projections.

Claims (2)

A double-head rotary payout-type composite writing instrument having a structure in which a plurality of writing bodies are accommodated in a shaft cylinder, and the writing body is protruded from a tip opening provided on one end side and the other end side of the shaft cylinder. Two sliding cylinders having a plurality of sliding grooves are connected to the one end axis side and the other end axis side in a shaft cylinder in which the one end shaft and the other end shaft at the position of the counter electrode are rotatably connected by an intermediate shaft. A plurality of writing bodies each having a sliding body attached to the rear portion thereof are elastically ejected in the opposite direction to the writing tip of the writing body in each of the sliding grooves of the sliding cylinder. Cam portions having cam inclined surfaces that are displaced in the direction along the axis of the shaft cylinder inside the intermediate shaft are provided on both sides of the one end shaft side and the other end shaft side, and the intermediate shaft is the one end shaft or By rotating with respect to the other end shaft, the sliding body is slidably brought into contact with the cam inclined surface of the intermediate shaft, and the sliding body is mounted. The writing tip of the writing member, double-headed rotary feeding type multifilamentary writing instrument, wherein the structure to be projected from the distal end opening provided in said one-axis or the other axis. A position where a plurality of marks corresponding to a plurality of writing bodies in the shaft cylinder are provided on the one end shaft and the other end shaft, and a writing tip of the writing body is extended to both ends of the intermediate shaft according to the position of the mark. The double-head rotary payout type multi-core writing instrument according to claim 1, wherein a mark for alignment is provided.

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