JP2013244622A - Writing implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a writing implement whose appearance is not damaged.SOLUTION: A writing implement includes a guide slit 6 formed axially on the rear end side of the shaft cylinder 3, and a slider 8 guided by the guide slit and positioned in the shaft cylinder in a slidable manner and connected by the writing body housed in the shaft cylinder. A clip member 9 is connected to the slider 8 on the outer side of the shaft cylinder 3 via the guide slit 6, and the clip member has a clip ball 9a formed toward the shaft cylinder at a position closer to the connection portion with the slider 8 avoiding the leading end portion 9b. The shaft cylinder 3 has a groove portion (clearance groove) 3a formed across the entire area opposite the moving position of the clip ball 9a, and the groove portion 3a is positioned in the rearer area than the leading end portion 9b of the clip member in a condition in which the clip member is retracted.

Description

  The present invention provides a writing instrument in which a clip member is mounted on the rear end portion side of the shaft tube, and the tip writing portion can be fed out from the tip end of the shaft tube by sliding the clip member toward the front in the axial direction. About.

  There is provided a dual-type writing instrument in which a plurality of writing bodies are accommodated in a shaft cylinder, and a tip writing portion of any writing body can be selectively fed out from a tip end of the shaft cylinder. In this compound writing instrument, a plurality of guide slits are formed along the axial direction at the rear end portion of the shaft tube, and a slider formed by projecting a finger-hanging portion along the guide slits slides into the shaft tube. It is arranged to be movable. And the rear-end part of each writing body is fitted and attached to the front-end part of the said slider.

In the above-mentioned dual-type writing instrument, the writing body attached to the slider moves forward in the shaft cylinder by sliding the finger rest portion of any slider forward along the guide slit, and the tip end of the shaft cylinder is moved forward. The leading writing part of the cursive is drawn out from
In addition, when the tip writing portion of any writing body is being drawn out, the writing body in which the tip writing portion is drawn out is returned spring by sliding the finger hooking portion of the other slider forward. The tip writing part of another cursive body acts so as to be fed out from the tip end of the shaft tube.

As the cursive body, a ball-pen refill or a mechanical pencil unit is mainly used.When the mechanical pencil unit is used as the cursive body, in order to facilitate the operation of extending the writing core by a knocking operation, Instead of the finger-hanging portion, a configuration in which a clip member is attached integrally is adopted for the slider.
In this case, the clip member is integrally formed with a ball portion (clip ball) projecting toward the shaft tube at a tip portion thereof.

As described above, when the clip member having the ball part formed at the tip part is used, when the tip writing part of the mechanical pencil unit is fed out from the tip end of the shaft tube, or to draw out the writing core from the mechanical pencil unit. In addition, when the clip member is knocked in the axial direction, the clip ball may come into sliding contact with the shaft tube and damage the side surface of the shaft tube, which has a problem of deteriorating the appearance of the writing instrument. Become.
Therefore, there is a compound writing instrument in which a concave groove portion is formed along the longitudinal direction on the side of the shaft cylinder on which the clip ball slides, so that a so-called escape groove is provided to prevent the clip ball from contacting the shaft cylinder. It is disclosed in Document 1.

JP 2007-55156 A

By the way, according to the compound writing instrument disclosed in Patent Document 1, when the above-mentioned writing body is retracted into the shaft cylinder, the clip member integrated with the slider supporting the writing body is the rear end of the shaft cylinder. It is made a state of being retracted to the side.
In this state, the clearance groove formed along the longitudinal direction on the side surface of the shaft cylinder appears exposed at the tip side of the clip member (see FIG. 2 of Patent Document 1). However, this will impair the appearance of the product and cause a decline in the commercial value of the writing instrument.

  The present invention has been made based on the above-described viewpoint, and the groove portion (relief groove) formed in the shaft cylinder so as to face the moving position of the clip ball sliding along the shaft cylinder is the clip member. It is an object of the present invention to provide a writing instrument that is configured so as to be prevented from being exposed and appearing on the front end side of the paper and that does not impair the appearance.

  The writing instrument according to the present invention, which has been made to solve the above-described problems, has a guide slit formed along the axial direction on the rear end side of the shaft tube, and slides into the shaft tube guided by the guide slit. And a slider to which a writing body accommodated in the shaft tube is connected, and the slider is a writing tool in which a clip member is coupled to the outside of the shaft tube through the guide slit. The clip member is formed with a clip ball toward the shaft cylinder at a position near the coupling portion with the slider, avoiding the tip, and the shaft cylinder is opposed to the moving position of the clip ball. A groove portion is formed over the entire area, and the groove portion is located in a region behind the tip portion of the clip member when the clip member is retracted.

  In this case, a plurality of guide slits are formed on the rear end side of the shaft tube so as to be aligned in the axial direction and in the circumferential direction, and can be slid into the shaft tube by being guided by each of the guide slits. A plurality of sliders arranged on each of the sliders, each of which is connected to a cursive body, and a tip writing portion of any one of the cursive bodies is formed on the shaft cylinder. It can utilize suitably for the compound writing instrument comprised so that it might pay out from a front-end | tip opening | mouth.

  According to the writing instrument described above, the clip member that moves along the shaft tube is formed with a clip ball toward the shaft tube at a position near the coupling portion with the slider avoiding the tip of the clip member. . Therefore, even when the groove portion is formed on the shaft tube side over the entire area facing the moving position of the clip ball, the groove portion is located behind the front end portion of the clip member in the state in which the clip member is retracted. It can be in a state of being located in the area.

  As a result, in the state in which the clip member is retracted, the groove (relief groove) formed in the shaft cylinder can be prevented from being exposed and appearing on the distal end side of the clip member, and appearance can be improved. It is possible to provide a writing instrument that is not damaged.

It is the external view and center sectional drawing which showed the whole structure of the writing instrument which concerns on this invention. In the writing instrument shown in FIG. 1, it is the external view and center sectional drawing which show the state which advanced the clip member. In the writing instrument shown in FIG. 1, it is a perspective view explaining the state which the clip member advanced and retracted.

The present invention will be described based on an embodiment in which the invention is used for a dual writing instrument. The embodiment shown in the figure assumes an example in which one mechanical pencil unit and two ballpoint pen refills are accommodated in a shaft cylinder as an example, and the shaft cylinder constituting the outline of the dual writing instrument 1 Is constituted by a front shaft 2 and a rear shaft 3.
In other words, a female screw formed on the inner peripheral surface of the front end of the rear shaft 3 is screwed with a male screw formed on the outer peripheral surface of the rear end of the front shaft 2 so that both can be separated.

  The front shaft 2 has a front end portion that is reduced in a conical shape, and a front end port 4 is opened. From the front end port 4, a front end writing portion of a writing body, that is, a mechanical pencil unit, or a front end writing portion of a ballpoint pen refill. It is configured to be able to protrude alternatively. A grip portion 5 made of rubber or synthetic resin is fitted on the outer peripheral surface of the front shaft 2 so as to be fitted.

  Three guide slits 6 are formed on the side surface of the rear end of the rear shaft 3 so as to penetrate the rear shaft 3 so as to be aligned along the axial direction and at equal intervals in the circumferential direction. . 1 and 2 show a single guide slit 6, in which a joint portion of the integrally formed slider 8 and clip member 9 is slidably mounted. Has been.

  The slider 8 is disposed so as to be movable in the axial direction along a guide hole 12 formed in a guide member 11 disposed in the rear shaft 3, and a connecting portion formed at a tip portion of the slider 8. A rear end portion of a cursive body (not shown) is fitted and attached via a short shaft member 14 connected to 8a.

  In this embodiment, a mechanical pencil unit (not shown) is attached to the slider 8 formed integrally with the clip member 9 via the short shaft member 14. Therefore, the tip writing portion of the mechanical pencil unit is projected from the tip opening 4 of the front shaft 2 by advancing the clip member 9 in the axial direction.

Further, in this embodiment, the other two guide slits 6 formed on the rear shaft 3 have finger hook portions 16 integrally formed with the slider so as to protrude from the outer peripheral surface of the rear shaft 3. It is slidably mounted. A ball pen refill (not shown) is attached to the slider formed integrally with the finger-hanging portion 16.
Therefore, the ball-point pen tip of the ball-point pen refill is protruded from the front end opening 4 of the front shaft 2 by advancing the finger hooking portion 16 in the axial direction.

In the clip member 9, a clip ball 9 a is integrally formed with the clip member 9 toward the shaft cylinder (rear shaft 3). In this embodiment, the clip ball 9 a is the tip of the clip member 9. It is formed at a position near the coupling portion with the slider 8 avoiding 9b.
In addition, a concave groove 3a is formed in the shaft tube over the entire area facing the moving position of the clip ball 9a. The groove portion 3a functions as a so-called escape groove that prevents the clip ball 9a from coming into contact with the rear shaft 3 and scratching the shaft tube.

2 and 3A, the clip member 9 is slid forward to cause the tip writing portion of a mechanical pencil unit (not shown) to protrude from the tip opening 4 of the front shaft 2. Shows the case.
In this state, by further knocking the clip member 9 forward, an operation of drawing out the writing core from the mechanical pencil unit is performed, but the clip ball 9a is further advanced by the knock operation. Up to this point, the groove 3a is provided on the rear shaft 3.

Moreover, the state shown in FIG. 1 and FIG. 3 (B) shows a state where the clip member 9 is most retracted.
As shown in the figure, the clip ball 9a in the clip member 9 is arranged at a position near the center in the length direction of the clip member 9, avoiding the tip of the clip member 9, so that the clip Even when the member 9 is in the most retracted state, the escape groove 3 a formed on the rear shaft 3 is not exposed forward of the front end portion 9 b of the clip member 9.

  Therefore, it is possible to prevent the escape groove 3a provided on the rear shaft 3 from appearing exposed on the tip 9b side of the clip member 9, and to provide a writing instrument that does not impair the appearance.

  The embodiment described above is an example of a compound writing instrument in which a plurality of writing bodies are accommodated in a shaft cylinder, and the tip writing portion of any writing body can be selectively fed out from the tip end of the shaft cylinder. However, this invention accommodates one writing body in the shaft tube, and slides the clip member forward so that the tip writing part can be extended from the tip port of the shaft tube. It can also be used as a writing instrument.

  Moreover, in the above-described embodiment, an example in which the mechanical pencil unit is projected and retracted from the distal end of the shaft cylinder by the slide operation of the clip member is shown, but this is, for example, the case where the tip writing part of the ballpoint pen refill is projected and retracted The same effect can be obtained also in.

1 Double writing instrument 2 Front shaft (shaft tube)
3 Rear shaft (shaft tube)
3a Groove (escape groove)
4 Tip port 5 Grip part 6 Guide slit 8 Slider 8a Connection part 9 Clip member 9a Clip ball 9b Clip tip part 11 Guide member 12 Guide hole 14 Short shaft member 16 Finger hook part

Claims (2)

A guide slit formed in the axial direction on the rear end side of the shaft tube, and a guide body that is guided by the guide slit and is slidably disposed in the shaft tube, is connected to the cursive body accommodated in the shaft tube. A writing instrument in which a clip member is coupled to the outside of the shaft cylinder through the guide slit,
In the clip member, a clip ball is formed toward the shaft cylinder at a position near the coupling portion with the slider that avoids the tip, and the shaft cylinder faces the moving position of the clip ball. A writing instrument, wherein a groove is formed over the entire area, and the groove is located in a region rearward of the tip of the clip member when the clip member is retracted.   A plurality of guide slits are formed on the rear end side of the shaft tube so as to be aligned in the axial direction and in the circumferential direction, and are guided by each of the guide slits and slidably disposed in the shaft tube. A plurality of sliders, each of which is connected with a cursive body, and a front end writing portion of any one of the cursive bodies is formed from a front end formed in the shaft cylinder. The writing instrument according to claim 1, wherein the writing instrument is configured to be fed out.

Images