JP2001239791A - Slide type multi-refill writing tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slide type multi-refill writing tool, regulated in the movement of a cap into axial and rotating directions, not dislocated easily, improved in assembling property and capable of mounting the cap without being separated from a telescopic mechanism. SOLUTION: In the slide type multi-refill writing tool, on which the cap is mounted, the cap is mounted by a method wherein a receiving chamber is formed by defining in a radial direction and an inserting hole, communicating with the receiving chamber, is formed at the rear end of the receiving case while a projection having a projected pawl is formed on the bottom surface of the cap at a position opposed to the receiving chamber and the projection of the cap is inserted into the inserting hole to engage the pawl with an engaging part formed in the receiving chamber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide-type multi-core writing instrument having a plurality of writing bodies arranged in a shaft cylinder.
More specifically, the present invention relates to a slide-type multi-core writing instrument having a crown attached.

[0002]

2. Description of the Related Art Writing implements having a crown attached to the end of a barrel or a cap for the purpose of a decorative effect or the like have been well known. In such a crown, a certain amount of force is applied in the axial direction or the amount of protrusion of the part exposed to the outside, in order to prevent so-called It also stipulates the power that cannot be removed.

[0003]

As a mounting structure of a crown in a slide-type multi-core writing instrument having a plurality of writing bodies disposed in a shaft cylinder, a cylindrical projection formed on the bottom surface of the crown is known. The head cap is mounted by press-fitting or press-fitting of the part and a fitting hole formed at the rear end of the barrel, or by screw fitting. In the slide type multi-core writing instrument, there is a retracting mechanism such as a slide member at the rear end of the barrel, so it is difficult to form a mounting portion for the crown near the retracting mechanism. The width of the design could not be widened because the crown was worn at the position where the design had a certain height.

[0004] The setting of the fitting force for the press-fitting or the over-fitting depends on the amount of wrapping at the time of press-fitting and the amount of protrusion of the convex portion that gets over at the time of overtaking. If the fitting force is set to be high, it is difficult to remove, but conversely, it is difficult to mount, so that the assemblability deteriorates. If the fitting force is set low in consideration of the assemblability, there is a problem that it is easy to come off. Further, the screw fitting has a problem that the structure is complicated and the manufacturing cost is significantly increased.

As a result of intensive studies on the prevention of the detachment of the crown by the present invention and the like, it has been found that, by rotating the crown, the fitting portion wears over time, and the initially set fitting force is reduced. By applying force in the axial direction or applying force in the torsional direction, rather than applying force only in the axial direction,
The present invention has been realized by the fact that the crown is easily pulled out, and the present invention regulates the movement of the crown in the axial direction and the rotation direction, does not easily fall out, and improves the assemblability. In addition, an object of the present invention is to provide a slide-type multi-core writing instrument capable of mounting a head crown without separating from a retraction mechanism.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a plurality of writing bodies are provided in a barrel, and a slide member provided at a rear end of each writing body is provided with a storage case at a rear end of the barrel. In the storage chamber of the storage case, a raised portion formed on a slide member is protruded from the outer peripheral surface of the storage case and is slidably stored in the storage chamber of the storage case, and a cap is attached to a rear end of the storage case. In the slide-type multi-core writing instrument, the storage chamber is formed so as to be divided in a radial direction, an insertion hole communicating with the storage chamber is formed at a rear end of the storage case, and a convex claw is formed on a bottom surface of a crown. A projection having a portion is formed at a position corresponding to the storage chamber, and the projection of the crown is inserted into the insertion hole, and the claw is engaged with an engaged portion formed in the storage chamber. By doing so, the cap is worn.

Further, the insertion hole has a diameter smaller than a diameter of a circumscribed circle of the claw portion.

[0008] The slide-type multi-core writing instrument of the present invention is, for example, an engaged member in which a locking portion of the slide member is formed in the shaft cylinder by advancing one protruding portion of the slide member toward the distal end of the shaft cylinder. By locking to the stop, the writing tip of the writing body can be selected and protruded from the barrel tip opening, and the ridge of the other slide member is advanced in the barrel tip direction, whereby The other release projection releases the locking portion locked to the locked portion, and further advances the other slide member so that the other locking portion locks to the locked portion and protrudes. And a mechanism for controlling the tip of the writing to maintain the above.

[0009]

Embodiments of the present invention will be described with reference to the drawings. For those showing the same members and locations,
The same reference numerals are given. In the slide type multi-core writing instrument 1 of the present invention, a rear shaft 3b is screwed onto the rear end of the front shaft 3a, and the rear end of the rear shaft 3b can be slid by being urged rearward by a resilient member 21. And a ball-point pen body 5 and a mechanical pencil body 9 in the barrels 3a, 3b and the storage case 4.
Is pushed backward by elastic members 14 and 15 and stored. The ballpoint pen body 5 has a tip member 7 holding a ball 8 rotatably press-fitted to the tip of an ink container 6. The mechanical pencil body 9 has a lead pipe 11 fitted to a lead core case 10. The distal ends of the slide members 12 and 13 serving as operating bodies are press-fitted into the ink storage cylinder 6 and the rear end openings of the lead core case 10, and the protrusions 1 are provided.
2a and 13a are cutout portions 1 formed in the storage case 4.
It is maintained in a state where it protrudes from the outer peripheral surface of the shaft cylinder from 6, 17. Protrusions 12b and 13b are formed at the rear ends of the slide members 12 and 13 to prevent the slide members 12 from jumping out of the barrel.

When using the mechanical pencil body 9,
By moving the protruding portion 13a in the direction of the shaft tube tip opening 3c, the locking portion 13c of the slide member 13 is locked to a covered portion (not shown) formed on the sliding body 4, thereby
Connect the tip pipe 11 of the mechanical pencil to the tip opening 3c.
Use it protruding from When the ballpoint pen body 5 is used, the protrusion 12a of the slide member 12 is advanced by moving the protruding portion 12a in the direction of the opening 3c at the end of the barrel.
The ball portion 13d of the slide member 13 locked to the locked portion
, And pushes out the locking portion 13 c, and slides the slide member 13.
To release the lock. Further, the protruding portion 12a is advanced in the direction of the shaft cylinder end opening 3c, whereby the locking portion 12c of the slide member 12 is locked to the locked portion (not shown), and the tip member 7 of the ballpoint pen body 5 is moved. It can be used by protruding.

In order to attach the crown 2 to the end of the storage case 4, an insertion hole 20 communicating with the storage chambers 18 and 19 is formed at the rear end of the storage case 4, and a convex shape is formed on the bottom surface of the crown 2. Claw part 2b
Is formed at a position corresponding to the storage chambers 18 and 19, and the protrusion 2a is inserted into the insertion hole 20, and the protrusion 2a is formed.
The claw 2b passes through the insertion hole 20 and engages with the engaged portion 4a which is the rear wall surface of the storage chambers 18 and 19 (the front end surface of the insertion hole 20). The cap 2 is worn.

The storage chambers 18 and 19 are formed so as to be divided in the radial direction in accordance with the number of slide members.
Since they are formed at positions corresponding to the storage chambers 18 and 19, movement in the rotation direction is prevented. In addition, storage case 4
When the claw portion 2b is engaged with the engaged portion 4a of each of the storage chambers 18 and 19, the notch portion 2c allows the claw portion 2b to be easily bent inward, thereby facilitating insertion. When the portion 2b is engaged, the protruding portion 2a bent inward is in a state of being returned to its original state, so that even if a force is applied in the pull-out direction (the direction of arrow F in FIG. 4), the crown 2 is It does not come off easily. The engagement between the claw portion and the engaged portion 4a is determined by the diameter M of the insertion hole.
Can be easily set by setting smaller than the diameter L of the circumscribed circle of the claw portion 2b.

The shape of the projection of the crown according to the present invention is not particularly limited as long as the projection has a claw at the tip end thereof. It is important to form it at a position corresponding to the room. Further, in the present embodiment, the engaged portion is the rear wall surface of the storage chamber. However, the present invention is not limited to this. I just need.

Further, the slide type multi-core writing implement of the present invention is not limited to the above-mentioned multi-core writing implement of a mechanical pencil and a ball-point pen, but may use three or four ball-point pens.
Alternatively, it can be used for a generally known slide-type multi-core writing instrument such as three mechanical pencils.

[0015]

Since the present invention has the above-described configuration,
A slide-type multi-core writing instrument with a cap attached can be provided, which restricts movement of the cap in the axial direction and the rotation direction, does not easily come off, and has good assemblability. In addition, since the cap is worn using the storage room,
Since it can be mounted without being separated from the position of the retractable mechanism, the width of the design can be expanded.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a slide type multi-core writing instrument according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing a state where a mechanical pencil in FIG. 1 is projected.

FIG. 3 is an enlarged cross-sectional view of a main part in which a part of FIG. 1 is omitted.

FIG. 4 is a longitudinal sectional view of FIG. 3 from which a slide member is omitted.

FIG. 5 is an enlarged sectional view of a main part in FIG. 4 before a cap is worn.

FIG. 6 is a sectional view taken along line AA in FIG.

FIG. 7 is a sectional view taken along the line BB in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Multi-core writing instrument of a sliding type 2 Head cap 2a Projection 2b Claw 4 Storage case 4a Engagement part 12, 13 Slide member 12a, 13a Raised part 16, 17 Notch part 18, 19 Storage chamber 20 Insertion hole L Claw Diameter of circumscribed circle of part M Diameter of insertion hole

Claims (2)

[Claims] 1. A plurality of writing bodies are provided in a barrel, and a slide member provided at a rear end of each writing body is integrally or integrally provided with a storage case at a rear end of the barrel. In the storage room,
A raised portion formed on the slide member is protruded from the outer peripheral surface of the storage case so as to be slidably stored therein, and a sliding multi-core writing instrument having a crown attached to the rear end of the storage case. And an insertion hole communicating with the storage chamber at the rear end of the storage case, and a protrusion having a convex claw on the bottom surface of the crown, corresponding to the storage chamber. Formed at a position, the projection of the crown is inserted into the insertion hole, and the claw is engaged with the engaged portion formed in the storage chamber, thereby mounting the crown. A sliding multi-core writing instrument. 2. The multi-core sliding writing instrument according to claim 1, wherein said insertion hole has a diameter smaller than a diameter of a circumscribed circle of said claw portion.