JP4183452B2 - Multi-core writing instrument - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a multi-core writing instrument in which a plurality of writing bodies are disposed in a shaft cylinder, and relates to a multi-core writing instrument capable of selectively projecting and retracting a writing tip portion of the writing body from a tip opening portion of the shaft cylinder. .
[0002]
[Prior art]
Conventionally, for example, as shown in FIGS. 4 to 7, the grip portion of the front shaft 52 is covered with a cylindrical grip member 68, and the front shaft 52, the rear shaft 53 screwed to the front shaft 52, and the rear shaft 53, a plurality of writing bodies 8, 9, and 10 are disposed in a shaft cylinder formed by mounting a sliding body case 54 in which a clip member is integrally formed, and the raised portions of the sliding bodies 5, 6, and 7 are disposed. 5a, 6a, and 7a are advanced in the direction of the front end opening 52a of the front shaft 52 so that the locking portions 5b, 6b, and 7b of the sliding bodies 5, 6, and 7 are formed near the shaft center of the sliding body case 54. By engaging with the engaging portion 54b, the writing tip portions 14, 15, 16 of the writing bodies 8, 9, 10 can be maintained in a protruding state from the tip opening portion 52a of the front shaft 52, and the writing body 8, Sliding multicore capable of selectively appearing 9, 10 and 10 writing tips 14, 15, 16 Kigu 51 etc., are well known for multicore writing instrument.
[0003]
[Problems to be solved by the invention]
However, in the conventional multi-core writing instrument, since the shaft tube is cylindrical, and a plurality of writing bodies are arranged, the writing body is located at an eccentric position with respect to the shaft center. Therefore, the outer diameter is also increased.
[0004]
By the way, the feel when gripping the grip member coated on the grip portion of the shaft cylinder, so-called elasticity, varies depending on the hardness of the grip member, but varies greatly depending on the difference in the thickness of the grip member. As a writing instrument in which the thickness of the grip member is changed, for example, it is known that the thickness of the grip member is changed by attaching a deformed grip such as a triangular cylindrical body to a cylindrical shaft cylinder. Yes. In addition, there is a writing instrument in which a plurality of ribs are formed on the outer wall of the shaft cylinder so that a gap is formed between the grip member and the shaft cylinder, and the grip member is elastically deformed by the gap, thereby having different elasticity when grasped. Are known.
[0005]
However, as described above, when the external shape is an irregular shape such as a triangle, the gripping position of the gripping tool is such that, for example, in the case of a triangular shape, the side connecting the corners can be stably gripped. Even if changes, the position of gripping the writing instrument will be constant due to the external shape. Also, the elastic feel of the structure is different from the elasticity of the grip member itself, such as forming a plurality of ribs on the outer wall of the shaft cylinder and forming a gap in the grip member and the shaft cylinder. Since a plurality of ribs are formed on the outer wall of the shaft cylinder, there is a problem that the outer diameter is further increased.
[0006]
In view of the above problems, the present invention provides a multi-core writing instrument in which two or more writing bodies are arranged and has a different feel (elasticity) at the grip position of the grip member without increasing the outer diameter. It is intended to do.
[0007]
[Means for Solving the Problems]
According to the present invention, the gripping portion of the shaft cylinder covers a grip member whose outer shape is cylindrical and whose inner shape is the same as that of the shaft cylinder, and a plurality of writing bodies are disposed in the shaft cylinder to operate the knock mechanism. By doing so, the writing tip of the writing body is a multi-core writing tool capable of selectively appearing and retracting from the tip opening of the shaft tube, and the gripping portion of the shaft tube is equal to or the same as the number of the writing bodies. A substantially polygonal cylindrical body having the above corners is provided.
[0008]
In addition, a clip member is attached to the rear end portion of the shaft tube so as to be rotatable with respect to the shaft tube.
[0009]
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 multi-core writing instrument 1 shown in FIG. 1 to FIG. 4 has a rear shaft 3 attached to the rear end of the front shaft 2, and a sliding body case 4 attached to the rear shaft 3 to form a shaft tube. The cursive body 8 is housed by being biased backward by the coil spring 17. The writing body 8 is a ball-point pen body in which a tip member holding a ball (not shown) rotatably in a tip opening portion of the ink containing cylinder 11 is press-fitted and attached as a writing tip portion 14. Further, the tip end portion of the sliding body 5 serving as the operating body is press-fitted and fitted into the rear end opening of the ink containing cylinder 11 of the writing body 8, and the raised portion 5 a extends from the locking window 4 a formed in the sliding body case 4. The sliding body case 4 is held in a state protruding from the outer peripheral surface. In addition, a clip member 19 is attached to the sliding body case 4 so as to be rotatable with respect to the sliding body case 4 (in the direction of arrows F and / or G). Similarly to the writing body 8, writing bodies 9 and 10 having a color different from that of the writing body 8 are disposed in the shaft cylinder. The writing bodies 9 and 10 include the ink storage cylinders 12 and 13 and the writing tip. This is a three-color ballpoint pen multi-core writing instrument 1 in which a ball-point pen body provided with parts 15 and 16 and sliding bodies 6 and 7 is energized rearward by a coil spring (not shown).
[0010]
When the writing body 8 is used, the protruding portion 5 a of the sliding body 5 is advanced in the direction of the front end opening 2 a of the front shaft 2, so that the locking portion 5 b of the sliding body 5 is near the axis of the sliding body case 4. The writing tip portion 14 of the writing body 8 is maintained in a protruding state from the tip opening portion 2a of the front shaft 2 by being locked to the locked portion 4b formed in the above. When using the other writing body 9, the protruding portion 6 c of the sliding body 6 is moved forward by moving the raised portion 6 a of the sliding body 6 attached to the writing body 9 in the direction of the tip opening 2 a of the front shaft 2. The protruding portion 5c of the sliding body 5 locked to the locked portion 4b is pushed out to release the locking between the locking portion 5b and the locked portion 4b, and the raised portion 6a of the writing body sliding body 6 is By moving forward in the direction of the front end opening 2a of the front shaft, the locking portion 6b of the sliding body 6 is locked to the locked portion 4b, and the protruding state of the writing front end portion 15 of the writing body 9 is maintained and used. be able to.
[0011]
Since the gripping portion of the front shaft 2 is composed of three writing bodies 8, 9, and 10, it is formed of a substantially triangular cylindrical body. The gripping portion 18 having a cylindrical external shape is provided in two colors on the gripping portion of the front shaft 2. Covered by molding. By covering the grip member 18 whose outer shape is cylindrical and whose inner shape is the same as that of the front shaft, the portion located at the corner of the front shaft 2 becomes the minimum thickness K, which is different from the maximum thickness L. (L> K) is obtained. In the present invention, the method of covering the grip member 18 is not particularly limited, but a grip member having an outer shape that is cylindrical and an inner shape that is the same shape as the shaft tube can be easily covered by two-color molding.
[0012]
As shown in FIG. 8, the multi-core writing instrument 1 according to the present invention has a thickness J of the grip portion of the front shaft 2, a thickness K of the minimum portion, an outer diameter H, and a circumscribing of the three writing bodies 8, 9, and 10. Compared with the conventional multi-core writing instrument 51 having the same circle M, the thickness of the grip member 18 is changed without changing the outer diameter H of the grip member 18 and compared with the thickness K of the grip member 58 of the conventional multi-core writing instrument. The thickness L of the grip member 18 can be increased (L> K).
[0013]
Moreover, since the position which grips the grip member 18 will be restrict | limited if the clip member 19 is attached, it is used by attaching the clip member 19 to the sliding body case 4 so that it can rotate (arrow F and / or G direction). The position of the clip member 19 may be rotated in accordance with the position of the grip member 18 that suits the user's preference.
[0014]
In this embodiment, a slide-type in / out mechanism is used for convenience. However, the in / out mechanism is not particularly limited as long as the writing tip of the writing body can be selectively in / out from the tip opening of the shaft cylinder. It is not something. Moreover, the substantially polygonal cylindrical body may have a corner portion equal to or more than the number of cursive letters.
[0015]
Further, the writing body used in the multi-core writing instrument of the present invention is not particularly limited, such as a ball-point pen body or a mechanical pencil body. Further, the ball-point pen body of the above-described embodiment is limited to three multi-core writing instruments. It is not intended to be used, and it is used for a generally known multi-core writing instrument in which two or more ball-shaped pens are arranged, such as two or four ball-point pens, one mechanical pencil and two ball-point pens, or three mechanical pencils. it can.
[0016]
【The invention's effect】
Since the present invention is configured as described above, in a multi-core writing instrument in which two or more writing bodies are arranged, the multi-core having a different feel (elasticity) at the grip position of the grip member without increasing the outer diameter. We were able to provide writing instruments.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a multi-core writing instrument according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view showing a state in which the writing body in FIG. 1 is projected.
3 is an AA enlarged cross-sectional view in FIG. 1. FIG.
FIG. 4 is a cross-sectional view of an enlarged main part showing three cursive bodies.
FIG. 5 is a longitudinal sectional view showing a conventional multi-core writing instrument.
6 is a longitudinal sectional view showing a state in which the cursive body in FIG. 5 is protruded.
7 is an enlarged cross-sectional view taken along line BB in FIG.
8 is a diagram comparing an AA enlarged sectional view in FIG. 1 and an BB enlarged sectional view in FIG. 5;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Multi-core writing instrument 2 Front axis | shaft 2a Front-end opening part 3 Rear axis | shaft 4 Sliding body case 4a Window part 4b Locked part 5,6,7 Sliding body 5a, 6a, 7a Raised part 5b, 6b, 7b Locking part 5c, 6c, 7c Protrusions 8, 9, 10 Cursive body 11, 12, 13 Ink storage tubes 14, 15, 16 Writing tip 17 Coil spring 18 Grip member 19 Clip member H Grip member outer diameter J Grip thickness K Minimum Part thickness L Maximum part thickness M Cursive circle of cursive

Claims (2)

By covering the grip portion of the shaft cylinder with a grip member whose outer shape is cylindrical and whose inner shape is the same as the shaft cylinder, a plurality of writing bodies are disposed in the shaft cylinder, and the knock mechanism is operated, The writing tip of the writing body is a multi-core writing tool capable of selectively appearing and retracting from the tip opening of the shaft tube, and the gripping portion of the shaft tube is equal to or more than the number of the writing bodies. A multi-core writing instrument characterized by being a substantially polygonal cylindrical body having The multi-core writing instrument according to claim 1, wherein a clip member is attached to a rear end portion of the shaft tube so as to be rotatable with respect to the shaft tube.

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