JP2010094811A - Writing implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a writing implement which prevents a shift of a phase due to unprepared rotation of a clip holder capped on the tail end of a shaft tube, and also prevents interference of characters and figures, printed on the outer circumferential surface of the shaft tube in an axial direction, with a clip. <P>SOLUTION: In the writing implement, the clip holder is fitted to the tail end of the shaft tube on which the characters and figures are printed in the axial direction of the outer circumferential surface, and the clip is attached to this clip holder. In the writing implement, an outside projection is formed to the outer circumferential surface of the shaft tube tail end, an inside projection is formed to the inner circumferential surface of the clip holder, and a temporary fixing projection is formed to the dagger side of the inside projection. Before the outside projection is completely fitted climbing over the inside projection, an outward annular projection is engaged with the temporary fixing projection to temporarily fix the clip holder. An index showing the phase whereby the clip holder is fitted is printed to the tail end of the shaft tube. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a writing instrument in which characters and figures are printed on the outer peripheral surface of a shaft tube, and a clip is attached to the shaft tube via a clip holder.

A clip that uses a resilient force such as a coil spring or a torsion coil spring so that the ball part at the tip is pressed against the surface of the shaft cylinder may require a space to hold the spring, making the structure slightly complicated. Therefore, the rear end portion of the shaft cylinder has a simple pipe shape, and a clip holder having a space for holding a spring is fixed to the tail end of the shaft cylinder, and the clip is often attached to the clip holder.
JP 2008-188780 A

  Further, in a popular writing instrument, for advertising purposes, characters and figures such as company names and product names are printed in the axial direction on the outer peripheral surface of a synthetic resin shaft tube and distributed to users. In this case, printed characters and graphics must interfere with the clip and be hidden behind the clip. Also, when the clip is positioned between the left and right characters and shapes, even if the characters and shapes are not hidden behind the clip, the distance between the left and right edges of the clip and the characters and shapes is not right and left. It becomes unsightly in appearance.

  In order to fix the clip holder to the shaft barrel tail end, an outward projection is formed on the outer peripheral surface of the shaft barrel tail end, an inward projection is formed on the inner surface of the clip holder, and the clip holder is covered on the shaft barrel tail end. Set, then hold the shaft cylinder in the vertical direction in the driving process and hit the head of the clip holder with a hammer, and the inward convex part of the clip holder gets over the outer convex part of the tail end of the shaft cylinder and fits Is often completed.

  Here, when setting the clip holder on the tail end of the shaft cylinder, it is necessary to accurately determine the phase (angle) of the clip holder with respect to the shaft cylinder, and in that state, hit the clip holder with a hammer to fit it. is there. However, the clip holder is inadvertently rotated with respect to the shaft cylinder due to vibration or impact while the clip holder is set on the tail end of the shaft cylinder and the process proceeds to the driving process, and as a result, the clip The gap between the left and right ends of the tube and the left and right characters and figures printed in the axial direction on the outer peripheral surface of the shaft cylinder is uneven, and the appearance becomes unsightly. Has a bug that hides in the clip.

  Therefore, the present invention does not cause the clip holder to turn unintentionally due to vibration or impact during the process of setting and placing the clip holder on the tail end of the shaft tube and shifting to the driving process. An object of the present invention is to provide a writing instrument in which characters and figures printed in the axial direction on the outer peripheral surface of the shaft cylinder do not interfere with the clip when the assembly is completed, and the appearance is not unsightly.

In order to achieve such an object, claim 1 is a writing instrument in which a clip holder is fitted to a tail end portion of a shaft cylinder on which characters and figures are printed in the axial direction of the outer peripheral surface, and the clip is attached to the clip holder. The outer convex portion is formed on the outer peripheral surface of the tail end of the shaft tube, the inner convex portion is formed on the inner peripheral surface of the clip holder, and the temporary fixing protrusion is formed on the abutment side of the inner convex portion. Before the part gets over the inward convex part and the fitting is completed, the outer convex part engages with the temporary fixing protrusion and temporarily stops the clip holder so that the clip holder does not rotate inadvertently.
According to a second aspect of the present invention, an index indicating a phase for fitting the clip holder is printed on the tail end portion of the shaft tube.

  Before the fitting is completed in the driving process, the outer convex portion of the shaft tube engages with the temporary fixing protrusion of the clip holder, and the clip holder temporarily fixes the shaft tube. Even if a slight vibration or impact is applied, the clip holder does not rotate carelessly, it can be fitted with the correct phase, and the positional relationship between characters and figures printed in the axial direction on the outer peripheral surface of the shaft tube and the clip Becomes accurate. Further, if an index indicating the phase in which the clip holder is fitted is printed on the tail end portion of the shaft cylinder, the clip holder can be easily set to the correct phase when the clip holder is put on the tail end of the shaft cylinder.

  The best mode for carrying out the invention will be described below with reference to the drawings. FIG. 1 shows an example in which the present invention is applied to a knock-type ballpoint pen. A ballpoint pen refill 6 is accommodated in the shaft cylinder 1 in a state where it is ejected toward the tail end side. The feeding mechanism for projecting and retracting the pen body of the ballpoint pen refill 6 from the tip opening of the shaft cylinder 1 is a known rotor type composed of a knock 4 and a rotor 5. Briefly, the knocking mechanism projects from the tail end of the shaft cylinder 1. When 4 is pressed, the rotor 5 moves forward in a state where a rotational force is applied, and when the blade portion of the rotor 5 comes out of the vertical groove on the inner surface of the shaft tube 1, the blade portion reaches the leading edge of the rib constituting the vertical groove. Engage and the pen body protrudes from the tip opening of the shaft tube 1 so that writing is possible. When the knocking operation is performed again from this state, the pen body is immersed in the shaft tube 1.

  A clip holder 2 is fitted to the tail end of the shaft tube 1. The clip 3 is pivotally supported on a support shaft 24 of a bifurcated portion 23 formed on the clip holder 2 so as to be rotatable. The torsion coil spring 7 is held inside the bifurcated portion 23, and the ball portion 31 at the tip of the clip 3 is pressed against the outer peripheral surface of the shaft tube 1 by the elastic force of the torsion coil spring 7.

  As shown in FIG. 2, the clip holder 2 fitted to the tail end of the shaft tube 1 is formed with a bifurcated portion 23 composed of a pair of wall portions protruding from the outer peripheral surface thereof as described above. A support shaft 24 that pivotally supports the clip 3 is formed on the outer surface of the bifurcated portion 23. An annular inward convex portion 21 is formed on the inner peripheral surface of the clip holder 2, and, for example, three temporary fixing protrusions 22 are formed on the abutment 2 a side of the inward convex portion 21. The height of the temporary fixing protrusion 22 is equal to or slightly lower than the height of the inward convex portion 21. On the other hand, as shown in FIG. 3, an annular outward convex portion 11 is formed in the small diameter portion 12 at the tail end of the shaft tube 1.

  When the clip holder 2 is fitted on the tail end of the shaft tube, first, as shown in FIG. 3B, the clip holder 2 is put on the tail end of the shaft tube 1 and the outward projection 11 is temporarily attached to the temporary fixing projection 22. Temporarily fix with pressure contact. At this time, as will be described later, the phase of the clip holder 2 with respect to the barrel 1 is accurately determined. The pulling force by this temporary fixing is about 50 to 500 gf, preferably about 100 to 300 gf. When temporarily fixed, the shaft cylinder 1 moves to the driving process. However, since the clip holder 2 is temporarily fixed to the shaft cylinder 1, the clip holder 2 can be moved even if a slight vibration or impact is applied to the driving process. The correct phase is maintained without inadvertent rotation. When the shaft cylinder 1 is held in the vertical direction and the head of the clip holder 2 is hit with a hammer, the inward projection 21 gets over the outward projection 11 as shown in FIG. .

  Here, by the printing plate S shown in FIG. 4, for example, two rows of letters L “ABCD” are printed on the outer peripheral surface of the shaft cylinder 1 so as to face each other in the axial direction. An index M is printed in the middle of the two rows of characters L. Therefore, as shown in FIG. 5 (A), when the forked portion 23 of the clip holder 2 is aligned with the index M and the clip holder 2 is placed on the tail end of the shaft tube 1 and temporarily fixed, temporary fixing can be performed with an accurate phase. Next, when the clip 3 is fitted in the driving step and the clip 3 is attached to the bifurcated portion 23, the clip 3 does not interfere with the letter L as shown in FIGS. Can do.

It is sectional drawing of this invention Example. (A) is a top view of a clip holder, (B is also a sectional view. (A) is a front view of the tail end portion of the shaft cylinder, (B) is an explanatory view in a state where the clip holder is temporarily fixed, and (C) is an explanatory view in a state in which the fitting is completed. It is a top view of the printing plate. (A) is explanatory drawing of the phase with respect to the character and figure when a clip holder is inserted, (B) and (C) are explanatory drawings of the phase with respect to the character and figure when a clip is attached.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shaft cylinder 11 Outward convex part 12 Small-diameter part 2 Clip holder 21 Inward convex part 22 Temporary fixing protrusion 23 Two-pronged part 24 Support shaft 3 Clip 31 Ball part 4 Knock 5 Rotor 6 Refill 7 Spring

Claims (2)

In a writing instrument in which a clip holder is fitted to the tail end portion of a shaft cylinder in which characters and figures are printed in the axial direction of the outer peripheral surface, and the clip is attached to the clip holder,
An outer convex portion is formed on the outer peripheral surface of the shaft tail end, an inner convex portion is formed on the inner peripheral surface of the clip holder, and a temporary fixing projection is formed on the joint side of the inner convex portion,
Before the outer convex portion gets over the inner convex portion and the fitting is completed, the outer convex portion engages with the temporary fixing projection, and the clip holder does not rotate carelessly with respect to the shaft tube. Writing instrument characterized by being temporarily fixed in the manner described above.   The writing instrument according to claim 1, wherein an index indicating a phase in which the clip holder is fitted is printed on a tail end portion of the shaft cylinder.

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