JP2013035223A - Slide-type multicore writing instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slide-type multicore writing instrument that facilitates replacement of writing bodies and has a smooth in/out motion.SOLUTION: The slide-type multicore writing instrument having a plurality of the writing bodies in an shaft cylinder body to which a male screw of a front shaft and a female screw of a rear shaft are detachably screwed, and also having a partitioning member for partitioning each writing body in the rear shaft is characterized in that: the partitioning member is movably arranged in the fore-and-aft direction; an extension extending along the longitudinal direction is arranged behind the male screw of the front shaft; and the rear end face of the extension of the front shaft presses the partitioning member against the rear end side of a shaft cylinder at the completion of the screwing of the front shaft and the rear shaft.

Description

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

  Conventionally, as a slide-type multi-core writing instrument, for example, as shown in Japanese Patent No. 3429717 “Slide-type multi-core writing instrument”, the raised portion of one sliding body is slid toward the front end opening of the front shaft. Thus, the locking portion formed at the rear end of the sliding body is locked to the locking portion formed on the shaft cylinder, and the writing tip portion of the writing body is projected from the tip opening portion, and the other sliding body is maintained. By sliding the raised portion of the sliding member in the direction of the front opening of the front shaft, the release protrusion of the other sliding body comes into contact with one sliding body, and the locking portion of one sliding body that has been locked to the stopping portion The writing tip of the writing body is protruded by moving the other sliding body forward by moving the other sliding body forward by engaging and disengaging the one writing tip. The in / out mechanism that allows you to incline by selecting the writing tip A ballpoint pen refill, etc., multi-core writing instrument sliding housing structure into the barrel in a plurality of writing bodies are well known.

  In such a slide-type multi-core writing instrument, each writing body can be interlocked with the sliding body, and the sliding body and the writing body are detachably connected in order to smoothly slide the writing body. Therefore, in order to replace the writing body, it is necessary to remove the front shaft, remove the writing body from the sliding body, and engage the sliding body with a new writing body. Therefore, it was very difficult to connect the cursive body to the corresponding sliding body and connect it.

  In view of these problems, in Japanese Patent Application Laid-Open No. 2008-36919 “Multi-core writing instrument”, a partition member (stuffing plug) partitioned by a plurality of holes corresponding to each writing body is fixed in the rear shaft, and this partition Although it has been disclosed that the writing body is arranged by communicating with the guide holes of the member so that the writing body and the sliding body can be easily engaged with each other. was there. In consideration of the movement of the cursive body, the partition member is disposed at a position separated from the front end surface of the rear shaft, and the exchangeability of the cursive body is not satisfactory.

“Patent No. 3429717” "Japanese Patent Laid-Open No. 2008-36919"

  Therefore, in consideration of the exchangeability of the cursive body, if the partition member is simply moved to the tip end side of the shaft tube, the length in the axial direction of the cursive body protruding from the partition member is shortened so as to contact the inner wall of the shaft tube tip portion. In contact therewith, the distance to move the writing tip of the writing body in the direction of the tip opening of the shaft tube is also shortened, and it is rapidly corrected in the direction of the tip opening of the shaft tube.

  An object of the present invention is to provide a slide-type multi-core writing instrument in which the cursive body can be easily exchanged and the intrusion operation is smooth in view of the above-described conventional problems.

  According to the present invention, a plurality of writing bodies are arranged in a shaft cylinder body in which a male screw portion of a front shaft and a female screw portion of a rear shaft are detachably screwed, and a partition member for partitioning each writing body is arranged in the rear shaft. In addition, the sliding body connected to the rear of each writing body is urged in the direction of the rear end of the barrel by a coil spring disposed between the partition member and the sliding body, and one sliding body is disposed. By sliding the moving body in the direction of the shaft tube tip opening, the writing tip of one writing body is maintained protruding from the shaft tube tip opening, and the other sliding body is slid in the direction of the shaft tube tip. , A slide-type multi-core writing instrument in which the writing tip of one writing body can be inserted through the opening of the shaft tube tip, and the writing tip can be selected and retracted, the partition member being movable in the front-rear direction In the longitudinal direction behind the male screw portion of the front shaft An extending portion extending along the front shaft is provided, and at the end of screwing of the front shaft and the rear shaft, the rear end surface of the extended portion of the front shaft presses the partition member toward the rear end side of the shaft tube. .

  In addition, a front protrusion is provided in the rear shaft, and the partition member restricts forward movement by the front protrusion before mounting the front shaft and the rear shaft.

  The length of the extending portion in the longitudinal direction is longer than the inner diameter of the rear shaft.

  According to the configuration of the first aspect of the present invention, by disposing the partition member so as to be movable in the front-rear direction, it becomes easier to assemble than the case where the partition member is fixed, and strict dimensional accuracy is achieved. Therefore, the manufacturing cost can be reduced. Further, by providing an extending portion extending along the longitudinal direction behind the male screw portion of the front shaft, there is an effect of increasing the rigidity of the shaft cylinder body after screwing.

  Further, an extending portion extending along the longitudinal direction is provided behind the male screw portion of the front shaft, and at the end of screwing of the front shaft and the rear shaft, the rear end surface of the extending portion of the front shaft is the partition. When the member is pressed and the partition member is moved to the rear end side of the barrel, when the writing body is replaced, the front shaft is removed so that the partition member moved rearward by the front shaft is And the coil spring between the sliding bodies moves to the front end side of the rear shaft, so that the writing body can be easily inserted.

  Furthermore, when the cursive body is immersed, the rearward movement of the sliding body is restricted. Therefore, after the front shaft is mounted, the partitioning member is moved forward by the coil spring disposed between the partitioning member and the sliding body. Although it is always urged and arranged on the shaft side, it is in contact with the rear end surface of the front shaft, so that the movement of the partition member is restricted. The urging force of the sliding member depends on the distance between the partition member and the sliding member. Since the urging force of the sliding body by the coil spring before screwing the front shaft is smaller than after the front shaft is screwed, the partition member and the sliding body are easily arranged. .

  The length of the longitudinal direction of movement of the partition member on the rear end side of the shaft member by pressing the rear end surface of the extending portion of the front shaft is preferably 0.5 mm to 10 mm in view of assembling property and refill exchangeability. .

  According to the configuration of claim 2 of the present invention, a front protrusion is provided in the rear shaft, and the partition member is moved forward by the front protrusion before the front shaft and the rear shaft are mounted. By restricting the movement, even if the front shaft is removed, the partition member does not fall, and the assembling property and the refill exchanging property can be improved. In addition, after the front shaft and the rear shaft are screwed together, the partition member is pressed to the rear shaft rear end side by the rear end surface of the extending portion of the front shaft, so that the load on the front protrusion is small, and the front It is possible to prevent the protrusion from being damaged or deteriorated.

  According to the third aspect of the present invention, the length of the extending portion in the longitudinal direction is longer than the inner diameter of the rear shaft, so that the front shaft is screwed to the rear shaft. After the extension part enters the rear shaft and prevents the front shaft from rattling, the front shaft and the rear shaft start to be screwed, so the screwing operation between the front shaft and the rear shaft is easy. Become.

  The present invention can provide a slide-type multi-core writing instrument in which the cursive body can be easily replaced and the intrusion operation is smooth.

1 is a longitudinal sectional view of a main part showing a slide type multi-core writing instrument in Example 1. FIG. It is a figure which shows the state which the writing front-end | tip part of one writing body in FIG. 1 protruded. It is an external view which shows the front axis | shaft in FIG. It is an AA expanded sectional view in FIG. It is the principal part expanded sectional view which a part of which showed the state which a partition member moves is abbreviate | omitted.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, the same number is attached | subjected about the same member and the same component in drawing.

Example 1
As shown in FIGS. 1 to 4, the slide-type multi-core writing instrument 1 according to the first embodiment is configured by screwing the male screw portion 2 </ b> B of the front shaft 2 and the female screw portion 3 </ b> C of the rear shaft 3 to constitute a shaft cylinder body. In this shaft cylinder main body, two writing bodies 8 and 14 which are ball-point pen bodies containing inks of different colors (not shown) housed in an ink storage tube and a writing body 11 made of a mechanical pencil are housed to slide type. A multi-core writing instrument 1 is obtained.

  On the rear shaft 3, a pressing member 4 having a knock portion 4A is slidably disposed. The pressing member 4 and the rear shaft 3 extend in the axial direction and have a sliding groove opened outward. 3A and 4A are formed, and the sliding body 5 having the same color as the ink color is slidably disposed in the sliding grooves 3A and 4A. The sliding body 5 is provided with a raised portion 5A, and the raised portion 5A is disposed on the rear portion of the partition member 6 and the sliding body 5 in a state of protruding from the outer peripheral surface of the rear shaft 3 from the sliding grooves 3A, 4A. The coil spring 7 is arranged to be biased rearward. A clip 16 is attached to the rear shaft 3.

  In order to use one of the writing bodies 8, the raised portion 5 </ b> A of the selected one sliding body 5 is advanced in the direction of the front end opening 2 a of the front shaft 2. The writing body 8 is moved forward by being locked to the stop portion 3B formed inside the shaft 3, and the writing tip portion 10 of the writing body 8 can be selected and protruded from the tip opening portion 2A of the front shaft 2. . At this time, the writing tip 10 moves and projects in the direction of the tip opening 2A of the front shaft 2 while abutting against the inner wall of the front shaft 2.

  The writing body 8 is a ballpoint pen body, and a writing tip portion 10 composed of a ballpoint pen tip on which a ball is rotatably held is attached to the tip portion of the ink containing tube 9. Oil-based ballpoint pen ink and ink follower (not shown) are directly accommodated.

  The writing body 11 is a mechanical pencil body, and the writing tip portion is attached to the leading end portion of the lead lead case 12 via a lead lead feeding mechanism. The lead lead case 12 has a black lead lead inside. (Not shown) is accommodated directly. Although not shown in detail, the other cursive body 14 is also provided with a pen tip portion made of a ballpoint pen tip at the tip of the ink containing cylinder 15 in the same manner as the cursive body 8. It is a ball-point pen body that directly accommodates different black oil-based ball-point pen inks and ink followers (not shown).

  With the writing tip 8 of the writing body 8 protruding, the raised portion of the other sliding body (not shown) is moved forward in the direction of the tip opening 2a of the front shaft 2, so that the other release protrusion makes the stopper One of the locking portions 5 </ b> B locked to 3 </ b> B can be released, and the writing tip portion 10 of the writing body 8 connected to the sliding body 5 can be immersed in the front shaft 2.

  Further, the lead core feeding mechanism of the writing body 11 is operated by pressing the knock portion 4B of the pressing member 4 protruding outward from the rear shaft 3 with the writing tip 13 of the other writing body 11 protruding. The lead core can be projected and written.

  Further, in the rear shaft 3, partition members 6 having through holes partitioned corresponding to the respective writing bodies 8, 11, 14 are arranged so as to be movable back and forth along the longitudinal direction. Is attached to the sliding body 5 through the through hole of the partition member 6.

  In order to replace the writing body, first, the front shaft 2 is removed from the rear shaft 3, and a desired writing body, for example, the writing body 8 is removed from the sliding body. Thereafter, a new writing body (not shown) is detachably attached to the sliding body 5 for replacement.

  Specifically, the partitioning member 6 is disposed so that the projection 6B of the partitioning member climbs over the front projection 3D from the front opening side of the rear shaft 3 and is movable between the front projection 3D and the rear projection 3E. It is. When the front shaft 2 is removed from the rear shaft 3, the sliding member 5 is restricted from moving backward by the rear shaft 3, so that the partition member 6 moves to the front shaft 2 side by the elastic force of the coil spring 7. To do. Specifically, the front protrusion 3D provided in the rear shaft 3 and the protrusion 6B provided on the outer surface of the partition member 6 move to the front end side of the rear shaft 3 until they abut. Thereby, at the time of replacement | exchange of a cursive body, it can be made easy to insert a cursive body in the through-hole of the division member 6. FIG.

  In addition, the male screw portion 2C of the front shaft 2 and the female screw portion 3C of the rear shaft 3 are screwed together. After the extension portion 2D provided behind the male screw portion 2C of the front shaft 2 enters the rear shaft 3, the front shaft 2 The screwing of the male screw part 2B of 2 and the female screw part 3C of the rear shaft 3 is started. As shown in FIG. 5, when the front shaft 2 and the rear shaft 3 are screwed together (in the direction of arrow F), the rear end surface 2D of the extending portion 2C of the front shaft 2 comes into contact with the front end surface 6A of the partition member 6. The partition member 6 is pressed and moved to the rear end side of the rear shaft 3.

  The length L in the longitudinal direction of the extending portion 2C provided behind the male screw portion 2B of the front shaft 2 is longer than the inner diameter M of the tip portion of the rear shaft 3. Thereby, the length of the longitudinal direction of the writing body 8 which protrudes in the front-end | tip opening part 2A direction of the front axis | shaft 2 from the division member 6 becomes short, and can perform smooth intrusion operation | movement. Further, the rearward movement of the partition member 6 is restricted by the rear protrusion 3E provided in the rear shaft 3. Further, the rear end portion 2E of the extending portion 2C of the front shaft 2 has an outer diameter that is reduced toward the rear end surface 2D in order to improve the entrance property to the rear shaft 3.

  The slide-type multi-core writing instrument of the present invention is not limited to the number of cursive letters, the ink color accommodated in the cursive letter, the type of ink, etc., but can be a sliding type such as three or four ballpoint pens or two mechanical pencils. It can be widely used as a multi-core writing instrument.

DESCRIPTION OF SYMBOLS 1 Sliding multi-core writing instrument 2 Front shaft 2A Front end opening 2B Male screw portion 2C Extension portion 2D Rear end surface 3 Rear shaft 3A Sliding groove 3B Locked portion 3C Female screw portion 3D Front projection portion 3E Rear projection portion 4 Pressing member 4A Sliding groove 5 Sliding body 5A Raised portion 5B Locking portion 6 Partition member 6A Front end surface 6B Protruding portion 6C Through-hole 7 Coil spring 8, 11 Writing body 10, 13 Writing front end portion

Claims (3)

While arranging a plurality of writing bodies in the barrel main body in which the male screw portion of the front shaft and the female screw portion of the rear shaft are detachably screwed, and a partition member that partitions the writing bodies in the rear shaft, A sliding body continuously provided behind each of the writing bodies is urged and arranged in a rear end direction of the shaft cylinder by a coil spring disposed between the partition member and the sliding body, and one sliding body is arranged as a shaft cylinder. By sliding in the direction of the tip opening, the writing tip of one writing body is maintained in a state of protruding from the opening of the tip of the shaft tube, and by sliding the other sliding body in the direction of the tip of the shaft tube, A slide-type multi-core writing instrument in which the writing tip of the body can be inserted from the opening of the shaft tube tip, and the writing tip can be selected and retracted, and the partition member is arranged to be movable in the front-rear direction. , Extending along the longitudinal direction behind the male screw part of the front shaft And a rear end surface of the extending portion of the front shaft presses the partition member toward the rear end side of the shaft cylinder when the front shaft and the rear shaft are screwed together. Multi-core writing instrument. The front projection is provided in the rear shaft, and the partition member restricts forward movement by the front projection before the front shaft and the rear shaft are mounted. The slide type multi-core writing instrument described in 1. The sliding multi-core writing instrument according to claim 1, wherein a length of the extending portion in a longitudinal direction is longer than an inner diameter of the rear shaft.

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