JP4429432B2 - Head crown or tail crown mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a crown or tail crown mounting structure in which a crown or tail crown is mounted on an end of a writing instrument member.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a writing instrument in which a crown or tail crown is attached to an end portion of a writing instrument member for a purpose such as a decoration effect is well known. Such a head crown or tail crown is screwed or press-fitted into the end of the writing instrument member, or an engagement hole is formed in the axial center of the end of the writing instrument member. A protrusion formed on the bottom surface of the crown or tail crown was engaged and mounted.
[0003]
[Problems to be solved by the invention]
However, in the structure in which the head crown or the tail crown is attached to the end of the writing instrument member by screwing or press fitting into the writing instrument, the head crown or the tail crown is not dropped from the writing instrument. In order to ensure mounting, the engaging portion needs to have a certain length in the axial direction. Also, there are many various mechanisms in the vicinity of the axis of the writing instrument member, such as the writing body, the writing body in / out mechanism, the seal member, etc., and when the engagement hole is formed in the axial center part of the end of the writing instrument member In consideration of the position of the above-mentioned cursive body and the in / out mechanism, it is necessary to form an engagement hole at a certain distance from the cursive body and the in / out mechanism.
[0004]
In particular, a plurality of writing bodies are arranged in the shaft cylinder, and the raised portion of the slide member arranged at the rear end of each writing body is held in a state protruding from the outer peripheral surface from the locking window formed in the shaft cylinder, by allowed to advance one of the raised portions in Jikuto distal direction, Kakariko portion of the slide member by engaging the Hikakariko portion formed in the shaft tube, Jikuto tip opening a writing tip of the writing body can be projected by selecting from the parts, the ridge of the other slide member that allowed to advance in Jikuto distal direction, the Kakariko portion which has been engaged with one Hikakariko portion the other release projection is released, the multi-core writing instrument of sliding that can be further Kakariko portion other by advancing to maintain engagement to projecting state Hikakariko section, the axis of Kakariko part and Hikakariko portion Since the slide member needs to be formed in the vicinity, the slide member is arranged to extend radially from the axis. As a mounting structure, a head crown is screwed into the rear end of the shaft tube, or a holding portion having a certain length is formed at the end of the shaft tube from a retracting mechanism such as a slide member, and an engagement hole is formed in the holding portion. A certain amount of space is required for the engagement hole formed at the rear end of the shaft cylinder from the retracting mechanism such as forming.
[0005]
In view of the above problems, the present invention does not restrict the length of the engaging portion of the crown or tail crown in the axial direction, and further requires a space from the position of the writing body and the intrusion mechanism in the writing instrument member. It is to provide a wearing structure of the crown or tail crown.
[0006]
[Means for Solving the Problems]
In the present invention, the protrusion is formed on the bottom surface of the head crown or the tail crown at a position eccentric with respect to the axial center, and is opposed to the protrusion at the end of the writing instrument member to which the head crown or the tail crown is attached. An engaging hole for engaging the protrusion is formed at the position, and the head crown or the tail crown is attached by engaging the protrusion with the engaging hole.
[0007]
Further, the projecting portion is formed with a notch that can be contracted in the radial direction, and the projecting engaging portion formed on the projecting portion exceeds the engaged portion formed on the engaging hole. It is a structure with a head crown or tail crown.
[0008]
Furthermore, the engagement hole is formed at the rear end of the shaft cylinder, and in the shaft cylinder, a plurality of writing bodies are arranged, and a raised portion of the slide member arranged at the rear end of each writing body, Engagement element in which the engaging portion of the slide member is formed in the axial tube by holding the protruding portion from the outer peripheral surface of the locking tube formed in the axial tube and advancing one of the raised portions toward the distal end of the axial tube. parts and locked in, said writing tip of the writing body can protrude selected from Jikuto tip opening, the ridges of the other slide member that allowed to advance in Jikuto distal direction, of one Hikakariko other release projection the Kakariko portion which has been engaged with the part is released, further Kakariko portion other by advancing capable of maintaining the locking to protrude state Hikakariko portion A sliding multi-core writing instrument.
[0009]
The writing instrument member of the present invention is a generally known member used for a writing instrument, which is a member such as a shaft cylinder or a cap to which a tail crown or a crown is attached. The head crown or the tail crown may be attached directly or through another member such as a holder member.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. The same reference numerals are given to the same members and parts indicating the same portions.
The writing instrument 1 shown in FIGS. 1 to 5 has two different color ballpoint pens on a sliding case 4 slidably disposed at the rear end of a rear shaft 5 by being urged rearward by a resilient member 13. The bodies 6 and 7 and the mechanical pencil body 8 are energized rearward by elastic members 11 (not shown) and 12 for storage. Each ball-point pen body 6, 7 is press-fitted and fitted with tip members 6 b, 7 b each holding a ball rotatably at the tip openings of the ink storage cylinders 6 a, 7 a. The mechanical pencil body 8 has a tip pipe 8b fitted to a lead core case 8a. Further, the front end portions of the slide members 9, 18 and 10 serving as operating bodies are press-fitted into the rear end openings of the ink containing cylinders 6a and 7a and the lead core case 8a, and the raised portions 9a, 18a and 10a are slid. It is held in such a state that it protrudes from the outer peripheral surface of the shaft tube from the engagement windows 13, 19, 14 formed in the moving case 4. A clip 15 is formed integrally with the sliding case 4.
[0011]
When using the pencil body 8, by allowed to advance the ridges 10a in Jikuto tip opening 3a direction, the engageable to Kakariko portion 9b of the sliding member 9 is formed on the axis A near the slide 4 By engaging with the child portion 4a, the tip pipe 8b of the mechanical pencil body is maintained and used in a protruding state from the tip opening 3a of the front shaft 3 screwed to the tip of the rear shaft 5. When using another writing body, for example, the ball-point pen body 6, the release protrusion 9c of the slide member 9 is locked to the to-be- engaged part 4a by advancing the protruding part 9a in the direction of the axial tube tip opening 3a. The engaging portion 10b of the sliding member 10 is pushed out to release the locking , and the raised portion 9a is advanced in the direction of the shaft tube tip opening 3a, whereby the engaging portion 9b is engaged with the engaged portion 4a. The tip member 6b of the ballpoint pen body 6 can be stopped and used while being stopped.
[0012]
As described above, when one writing body (mechanical pencil body 8) is used and then another writing body (ball pen body 6) is used, one writing body is released by the release protrusion 9c of the other slide member 9. extruded Kakariko portion 10b which is engaged with the Hikakariko portion 4a of the body 10, since it is necessary to release the locking, retractable mechanism such as a slide members 9 and 10 are disposed in the vicinity of the axis a is there.
[0013]
The crown 2 is attached to the rear end of the sliding case 4. Since the sliding case 4 is provided with the protruding and retracting mechanism in the vicinity of the axis A as described above, the position of the sliding member 4 that is eccentric with respect to the axis A at the rear end of the sliding case 4 and the sliding members 9, 10, The engagement hole 16 is formed at a position different from the position where the 18 is disposed, and the protrusion 2 b formed on the bottom surface of the crown 2 is engaged with the engagement hole 16 to attach the crown 2. is there. The bottom 2a of the crown 2 is non-circular in order to prevent rotation, and the bottom 2a is loosely fitted into a fitting portion 4b formed at the rear end of the sliding case 4. Since it is the bottom 2a for preventing rotation, the length in the axial direction can be set short without being restricted. In the present embodiment, the bottom portion and the fitting portion are loosely fitted, but may be fitted by press fitting or the like.
[0014]
When engaging the protrusion 2b formed on the bottom surface of the head crown 2 with the engagement hole 16, the protrusion 2b is provided with a notch 2d that can be contracted. Is easy to engage because of diameter reduction. Further, after the engaging portion 2c formed on the protruding portion 2b passes through the engaging hole 16, the diameter of the protruding portion 2b returns to the original, so that a force is applied in the removal direction (the arrow F direction in FIG. 3). Since the engaging portion 2c comes into contact with the engaged portion 17 which is the bottom surface of the sliding case 4, it does not easily fall off.
[0015]
In addition, the shape of the protrusion 2b of the present invention is not particularly limited. Further, the shape of the engaging portion 2c formed on the protrusion 2b is not particularly limited. Similarly, the engaged portion 17 is also engaged with the bottom surface of the engaging hole 16 of the sliding case 4 in the present embodiment. Although the joint portion 17 is not limited to this, a stepped portion or a protruding portion may be formed in the engagement hole 16. That is, when the protrusion 2b is inserted into the engagement hole 16, the diameter of the protrusion 2b is reduced by the notch 2d, and the engagement part 2c formed on the protrusion 2b exceeds the engaged part 17 so that the diameter of the protrusion is reduced. Even if a force is applied in the drop-off direction by returning the diameter of 2b to the original, any structure may be used as long as the engaging portion 2c does not easily fall off by contacting the engaged portion 17.
[0016]
In addition, the present invention does not directly form an engagement hole at the rear end of the shaft tube as in the embodiment, and other members such as a sliding case are disposed at the rear end of the shaft tube, An engagement hole may be formed in the member. Furthermore, the present invention is not limited to the slide-type multi-core writing instrument described above, and any writing instrument member that is equipped with a head crown or a tail crown in a generally known writing instrument may be used.
[0017]
【The invention's effect】
Since the present invention is configured as described above, the length in the axial direction of the head crown or tail crown is not restricted, and further, a distance is required from the position of the writing body or the appearance mechanism in the writing instrument member. A head crown or tail crown mounting structure can be provided.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a multi-core writing instrument according to a first embodiment of the present invention.
FIG. 2 is a longitudinal sectional view showing a state in which the mechanical pencil body in FIG. 1 is protruded.
FIG. 3 is an enlarged cross-sectional view of a main part in which a part of the first embodiment of the present invention is omitted.
FIG. 4 is an enlarged cross-sectional view of the head crown in FIG.
FIG. 5 is a cross-sectional view taken along the line II in FIG.
[Explanation of symbols]
2 Head crown 2a Bottom 2b Protrusion 2c Engagement part 2d Notch 16 Engagement hole A Axis center

Claims (3)

A protrusion is formed on the bottom surface of the crown or tail crown at a position eccentric to the axial center, and at the position facing the protrusion at the end of the writing instrument member to which the crown or tail crown is attached. An attachment structure for a head crown or a tail crown, wherein an engagement hole for engaging the part is formed, and the crown or tail crown is attached by engaging the protrusion with the engagement hole. The protrusion has a notch that can be contracted in the radial direction, and the protrusion-like engagement portion formed on the protrusion exceeds the engaged portion formed in the engagement hole. 2. The head crown or tail crown mounting structure according to claim 1, further comprising a tail crown. The engagement hole is formed at the rear end of the shaft cylinder, and a plurality of writing bodies are disposed in the shaft cylinder, and the raised portions of the slide members disposed at the rear ends of the respective writing bodies are provided in the shaft cylinder. By holding the protruding portion from the outer peripheral surface of the locking window formed on the front and moving the one raised portion forward in the direction of the tip of the shaft tube, the engaging portion of the slide member is moved to the engaged portion formed in the shaft tube. and engaging, the writing tip of the writing member can be projected by selecting from Jikuto distal opening, that allowed to advance the ridges of the other slide member Jikuto distal direction, one of the engageable sliding capable of a Kakariko portion which has been engaged with the terminal part and the other the release projection is released, further Kakariko portion other by advancing to maintain engagement to projecting state Hikakariko portion The mounting structure for a head crown or a tail crown according to claim 1 or 2, which is a multi-core writing instrument.

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