JP2564586Y2 - Writing instrument for notebook - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a writing instrument for a notebook which is detachably attached to the back of a notebook carried in a breast pocket or the like.

[0002]

2. Description of the Related Art An example of a well-known writing instrument for a notebook is a pencil. As two examples, a mechanical pencil or a ballpoint pen is known. An example of a writing instrument related to the present invention is one in which a ballpoint pen is attached to the rear end of a knock mechanical pencil. Also, as two examples of the writing instrument related to the present invention, a non-knocking sharpening device in which the lead is pulled out of the chuck together with the wear of the lead by a guide mechanism that moves back and forth in conjunction with a slider mechanism and a slider via a ball. Pencils are known.

[0003]

An example of the above-mentioned writing instrument for a conventional notebook is inconvenient because the core must be shaved. The two mechanical pencils have the disadvantage that the shaft is so thin that it is difficult to grasp and it is difficult to knock out the lead. In addition, in the example of the writing implement related to the present invention, since the ball-point pen changes its axis when the core is extended, there is a problem that the core is extended when writing with strong pen pressure when using the ball-point pen. In addition, the combined length of the mechanical pencil and ballpoint pen increases the overall length and protrudes longer than the upper end of the back of the notebook, which is inconvenient to carry.
(The total length of the core usually used is 60 mm standard product.) Further, two examples of the writing implement related to the present invention have a complicated structure and are expensive.
There is also a disposable type with a simplified structure,
Refilling of the core is impossible or difficult, uneconomical or troublesome. As described above, the notebook writing instrument of the present invention eliminates the need for knocking the mechanical pencil, improves the drawbacks of the conventional notebook writing instrument, and enables the combination of a convenient and easy-to-use mechanical pencil and ballpoint pen, and Another object of the present invention is to make it easy to refill the core with an inexpensive non-knock structure.

[0004]

SUMMARY OF THE INVENTION A writing instrument for a notebook according to the present invention devised to achieve the above object is provided with a mechanical pencil such as a mechanical pencil at one end of a shaft and a ballpoint pen at the other end. The mechanical pencil is mounted so that it cannot move, and the mechanical pencil is provided with a guide pipe that protrudes appropriately from the tip of the base and a slider that integrally has a holding chuck that frictionally engages with the core. In addition, a chuck that grips the core via a ball is provided, and a spring is always provided to urge the slider forward, and the chuck is always provided to the rear, so that when the writing pen such as a ballpoint pen is attached, the core reaches the tip of the guide pipe. The guide pipe is inserted so that the lead is pulled out of the chuck by the forward and backward movement of the guide pipe accompanying the writing.

[0005]

1 to 6 show an embodiment of the present invention. The writing instrument 1 for a notebook according to the present invention, as shown in FIG.
A writing instrument attached to an insertion hole 4 provided in a back portion 3 of a portable notebook 2 to be stored in a breast pocket or the like, wherein a mechanical pencil such as a ballpoint pen can be attached and detached at one end of a writing instrument shaft and a ballpoint pen at the other end; Further, it is mounted so that the shaft cannot be shifted.

[0006] As shown in FIG.
A slider 7 integrally provided with a holding chuck 9 for appropriately frictionally engaging a guide pipe 8 and a core 50 appropriately protruding from the tip of the base 5 is provided so as to be able to move back and forth within the base 5. An engagement groove 6 for locking a knock cover 45 described later is formed on the outer periphery of the base 5, and a shaft portion that is also press-fitted and fixed to the outer cylinder 22 described later is provided at a rear end.

At the rear of the slider 7, a forward end portion of a tightening cylinder 15 having a tapered hole 16 at a rear end hole of the base 5 is fixed to a tip end thereof via a ring 17.
5, a chuck 11 is fitted in advance, and a concave portion 12 is appropriately formed on the outer periphery of a position where the core 50 of the chuck 11 is gripped. Is in contact with the tapered hole 16 of the tightening cylinder 15. A spring 1 is provided between a step 14 at the front of the chuck 11 and a step 10 provided at the rear end of the slider 7.
8 is urged, and the base 5 and the tightening cylinder 15 are fixed. In this state, the slider 7 is constantly pressed forward, so that the tip of the guide pipe 8 projects from the tip hole of the base 5,
The chuck 11 is configured to be able to move back and forth while being constantly pressed rearward. The ring 17 is provided to prevent the ball 13 from coming off in the forward direction.

Further, the tightening cylinder 15 has a cylindrical portion provided with a locking portion on the rear outer periphery, and the tip of the inner cylinder 19 is fixed thereto. In this state, the inner cylinder 19 is inserted from the front end of the outer cylinder 22, and the shaft at the rear end of the base 5 is fixed to the front end hole of the outer cylinder 22. The inner cylinder 19 has an outer diameter slightly smaller than the inner diameter of the outer cylinder 22 as shown in FIGS.
An outer groove 25 is formed at an appropriate position on the outer peripheral portion of the inner cylinder 19 between the inner cylinder 19 and the inner diameter of the outer cylinder 22, and a refilling built-in core 51 is inserted into the outer groove 25. Further, a vertical groove 23 for guiding a projection 40 of a writing body 30 such as a ballpoint pen, which will be described later, is formed on the outer peripheral portion of the inner cylinder 19 from the rear end to an appropriate position toward the front. A circumferential lateral groove 24 is formed.

As shown in FIG. 2 and FIG. 6, the writing body 30 such as a ball-point pen
The tail plug 39 provided with is press-fitted and fixed. A boss 42 is formed at the rear end of the press fitting portion of the tail plug 39. A hole 38 is formed on one side of the rear side of the storage tube 37. Storage tube 3
7, a holder 3 having an engaging portion 36 on the inner diameter on the front end side at the rear end.
4 is fitted, and the engaging portion 36 is locked and fixed to the hole 38. Incidentally, an engagement groove 35 is formed in the inner hole at the rear part of the holder 34, and an appropriate slot 48 is formed on the outer peripheral part thereof.
Is provided. The base 31 has an engaging portion 33 on the outer periphery of the forward portion, an engaging groove 32 on the outer periphery of the rear portion, and a rear end provided with a hole for projecting a writing tip 44a of a ballpoint pen core 43 described later. I have.

The ball-point pen core 43 is formed by joining a writing tip 44a of a ball-point pen or the like with a tube 44b filled with ink.
3 is inserted into the storage tube 37 with the writing tip 44a at the rear end side, and the boss 42 of the tail plug 39 is inserted into the end hole of the tube 44b.
Are locked and fixed. A groove for ventilating the inside of the tube is appropriately provided between the boss and the end hole. The writing tip 44 a is projected from the rear part of the holder 34 so that
Is attached, and the engaging portion 33 is elastically inserted into the engaging groove 35.
Is locked, so that the base 31 is appropriately prevented from coming off and rotated by the holder 34. Since the holder 34 is provided with a slot 48, the base 31 can be easily attached and detached, and the ballpoint pen core 43 can be replaced.

The writing body 30 such as a ball-point pen is constructed as described above. The projection 40 is positioned in the longitudinal groove 23 from the rear end of the outer cylinder 22 and is fitted into the inner cylinder 19, and is rotated appropriately to form the projection 40. It is locked to the lateral groove 24 and fixed to the inner cylinder 19. It should be noted that the writing body 30 such as a ball-point pen is
Is restrained on the expanding side by the inner circumference of the outer cylinder 22, so that the base 31 and the holder 34 are firmly fixed. A knock cover 45 having a flange 47 at a substantially rear end and an engagement portion 46 at a front end inner hole is detachably locked in the engagement groove 32 of the base 31 and provided on the back 3 of the notebook 2. It is installed in the insertion hole 4.

FIG. 7 shows an example in which an inner groove 60 is provided with an outer groove 61 capable of accommodating a plurality of built-in cores 62 collectively.

[0013]

The writing implement 1 for a notebook according to the present invention is constructed as described above. When the portable writing instrument 1 is carried in a breast pocket or the like, the writing implement 1 is attached to the insertion hole 4 provided in the back 3 of the notebook 2. When using the mechanical pencil, the slider 7 retreats with the consumption of the lead 50 by pressing the tip of the guide pipe 8 against the paper surface and writing. When the tip of the guide pipe 7 is separated from the paper surface, the slider 7 is actuated by the action of the spring 18. Go forward,
At the same time, the lead 50 pulls out the lead from the chuck 11 by the engaging force of the holding chuck 9. Note that the chuck 11 opens the lead 50 with a small force in the forward direction and holds the lead 50 with a sufficient force against the pen pressure behind.

When a ballpoint pen is used, the knock cover 45 is detached. The knock cover 45 can be detachably engaged with the base 5 on the mechanical pencil side. In addition, when the lead 50 is worn out with the use of the mechanical pencil and the rear end of the lead comes off the gripping portion of the chuck 11, the lead cannot be pulled out. At that time, the writing body 30 such as a ballpoint pen is rotated as appropriate to release the engagement with the inner cylinder 19 and withdraw. Then, one internal core 51 is provided in the inner cylinder 19 so as to face the rear end hole of the chuck 11. When the writing body 30 such as a ballpoint pen is inserted again into the lead guide portion 21, the end 41 of the tail plug 39 abuts on the rear end of the lead to advance the lead,
The residual wick is swept out from the tip of the guide pipe 8, and the tip of the new wick is guided to the tip of the guide pipe 8.

[0015]

[Effects of the Invention] The configuration and operation of the writing instrument for a notebook according to the present invention are as described above, and the knocking operation for unwinding the lead is not required, so that there is no trouble in the knocking operation. Even if the shaft is thin, there is no inconvenience in operation, and there is no problem even if the writing pressure is increased when using a ballpoint pen. In addition, since there is no built-in core (60 mm) behind the core guide portion, it is possible to achieve a short overall length that can be attached to a standard notebook at a level that can be sufficiently used even if the mechanical pencil and the ballpoint pen are combined. Further, the core can be replenished by using a simple knocking mechanism, so that the cost can be reduced and economical. Further, since the core is protected by the guide pipe, even if a thin core or a soft core which is convenient for writing for a notebook is used, there is an effect that problems such as breakage of the core are eliminated.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing a portable notebook and a writing implement for notebook which is an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a writing instrument for a notebook which is an embodiment of the present invention.

FIG. 3 is a sectional view taken along the line AA in FIG. 2;

FIG. 4 is a sectional view taken along the line BB in FIG. 2;

FIG. 5 is a longitudinal sectional view of an inner cylinder used for a writing instrument for a notebook which is an embodiment of the present invention.

FIG. 6 is a front view showing the appearance of a writing object such as a ballpoint pen used in a writing instrument for a notebook which is an embodiment of the present invention.

FIG. 7 is a cross-sectional view at the position of the AA cross-sectional view showing another example of the outer groove for storing the built-in core of the inner cylinder.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Writing implement 2 Notebook 3 Back part 4 Insertion hole 5 Base 6 Engagement groove 7 Slider 8 Guide pipe 9 Holding chuck 10 Step part 11 Chuck 12 Depression 13 Ball 14 Step part 15 Clamping cylinder 16 Taper hole 17 Ring 18 Spring 19 Inner cylinder 20 Insertion Hole 21 Core guide part 22 Outer cylinder 23 Vertical groove 24 Horizontal groove 25 Outer groove 30 Writing body such as ballpoint pen 31 Base 32 Engagement groove 33 Engagement part 34 Holder 35 Engagement groove 36 Engagement part 37 Storage tube 38 Hole 39 Tail plug 40 Projection 41 End 42 Boss 43 Ballpoint pen core 44a Writing tip 44b Tube 45 Knock cover 46 Engagement part 47 Flange 48 Slot 50 50 Core 51 Built-in core 60 Inner cylinder 61 Outer groove 62 Built-in core

Claims (1)

(57) [Scope of request for utility model registration] 1. A writing instrument for a so-called notebook mounted on the back of a notebook, wherein the writing instrument for the notebook has a mechanical pencil such as a mechanical pen at one end of a shaft and a ballpoint pen at the other end.
In addition, the mechanical pencil is mounted so that it cannot be shifted, and the mechanical pencil has a slider integrally provided with a holding chuck that frictionally engages a guide pipe and a core that appropriately protrudes from the tip of the base, and is provided to be able to move back and forth within the base, facing the slider. A chuck is provided at the rear to hold the lead through a ball, and a spring is always provided to urge the slider forward and the chuck is always provided to the rear. A writing instrument for a notebook, wherein the writing tool is inserted through the guide pipe so that the core is pulled out of the chuck by the forward and backward movement of the guide pipe accompanying the writing.