JP4170809B2 - Writing instrument - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a writing instrument in which a cap that covers a pen tip can be removed at the time of use and attached to the rear end side of the writing instrument body.
[0002]
[Prior art]
Conventionally, as this type of writing instrument, as shown in FIG. 10, there is known one in which a concave portion is provided on the rear end side of the writing instrument main body and a convex portion arranged on the front end side of the cap is connected. In addition, it is also known that the cap itself is squeezed into the rear end portion of the writing instrument body and connected (see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-8-183290 [0004]
[Problems to be solved by the invention]
Recently, the diversification of whiteboards has progressed. For example, various types of whiteboards have been developed so that meetings and presentations can be efficiently performed by making the entire area of the partition wall or a fixed area of the fixed wall into a whiteboard. Has been. Such whiteboards are different from conventional ones, and many whiteboards can be written using a writing tool even in an area lower than the waist.
[0005]
When writing on such a whiteboard, it is often the case that writing is done for the high area by holding the writing instrument in a regular way, that is, holding it in the same way as holding a pencil or other writing instrument, When writing in a low area, it is possible to proceed with a meeting or a presentation in a posture where it is easier to handle a writing instrument in a so-called wrapped state.
[0006]
In order to meet such a demand, a writing instrument has been developed in which a writing instrument body having a pen tip on the front end side can be wrapped in a short size. In other words, this type of writing instrument has an index finger and a pen tip attached to the vicinity of the front end of the writing instrument body, with the entire end of the writing instrument body wrapped with all fingers with the rear end of the writing instrument body in contact with the palm of the hand. It can be used while giving the sensation of being integrated. Thus, when such a writing instrument is used in a regular manner, it is necessary to attach a cap removed from the pen tip side to the rear end side of the writing instrument body so that the entire length is appropriate.
[0007]
However, in such a configuration, when writing in a proper way, the outer periphery of the cap attached to the rear end side of the writing instrument body is pressed against the base of the thumb and index finger. For this reason, when a force is applied to the writing operation, a large bending force acts on the connecting portion between the rear end portion of the writing instrument body and the cap, which causes a problem that the cap is easily detached.
[0008]
Such a problem cannot be solved by increasing the fitting depth between the writing instrument body and the cap, for example. However, in the writing instrument main body whose total length is set in consideration of wrapping, if the fitting depth is set large, there is a problem that the space for storing ink or the like is unduly narrowed.
[0009]
The present invention has been made by paying attention to such circumstances, and is used in a proper manner without causing problems such as a decrease in ink capacity and undesirably lengthening the entire length of the writing instrument body. The main purpose is to provide a writing instrument that can eliminate the problem of the cap being easily removed.
[0010]
[Means for Solving the Problems]
The present invention comprises a writing instrument body having a pen tip on a front end side, Ri name comprises a cap which is detachably mounted on the front end side of the writing instrument body so as to cover the nib, lasting wrapped in palm A writing instrument that has a cylindrical outer peripheral side wall and a convex part located at the axial center of the outer peripheral side wall on the tip side of the cap, and On the end side, there is provided a protrusion that can fit the outer peripheral side wall with a cap, and a concave-shaped part that opens in the axial center part of the protrusion, and the outer peripheral side wall in the cap and the protrusion in the writing instrument body. The first fitting portion constitutes the second fitting portion by the convex shape portion in the cap and the concave shape portion in the writing instrument main body, and the cap is arranged on the rear end side of the writing instrument main body. First Those constructed so as to detachably attached via the engagement portion and the second fitting part.
[0011]
According to such a configuration, it is possible to reasonably expand the fitting region as compared with the conventional one having only a single fitting portion between the writing instrument body and the cap. Therefore, the connection between the writing instrument main body and the cap can be strengthened without narrowing the ink storage area of the writing instrument main body or unreasonably increasing the length of the writing instrument main body. it can.
[0012]
In addition, if a plurality of fitting portions provided in the writing instrument are arranged concentrically with the cap and the writing instrument main body so that the axes coincide with each other, a plurality of fitting positions are provided when the cap and the writing instrument main body are fitted. Even so, the cap and the writing instrument main body can be easily and firmly fitted and connected without requiring positioning or the like.
[0013]
In the state where the cap is mounted on the front end side of the writing instrument body, the fitting portion is provided between the front end side of the cap positioned further forward than the pen tip of the writing instrument body and the rear end side of the writing instrument body. In this case, when connecting, the tip end side of the cap and the rear end side of the writing instrument body are always fitted.
[0014]
According to such a configuration, it is possible to effectively prevent a problem that the ink adheres to the hand when carrying the envelope. That is, when the pen nib is stored in the cap, the pen nib stains the inner surface of the cap rear end side. Therefore, if the rear end side of the cap can be connected to the rear end side of the writing instrument body, the cap is removed from the writing instrument. Although there is an inconvenience that the rear end side of the writing instrument is soiled by fitting to the rear end side, according to the configuration of the present invention described above, such a problem can be solved. In addition, according to such a configuration, with the cap attached to the front end side of the writing instrument main body, for example, the writing instrument main body rear end side of another writing instrument having the same structure can be connected to the tip end side of the cap. It becomes possible. Therefore, a plurality of writing instruments having the same structure can be connected in a rod shape via a cap.
[0015]
In addition, if the fitting direction is fixed, that is, it is not possible to connect either of the caps, but only the cap tip side is provided, a plurality of fitting portions are provided between the cap tip side and the writing instrument body. This makes it easier to secure a more stable fitting state that exhibits particularly high strength against bending force.
[0016]
Furthermore, even when multiple writing instruments are connected and used continuously, they are always connected with the orientation of the writing instruments aligned, so it is convenient to use while changing the order of the writing instruments. Easy to use.
[0017]
Next, a cylindrical outer peripheral side wall and a convex part located at the axial center of the outer peripheral side wall are arranged on the front end side of the cap, and the cap is fitted on the rear end side of the writing instrument body by the outer peripheral side wall. A projecting portion that can be formed and a concave-shaped portion that opens at an axial center portion of the projecting portion, and a first fitting is performed by the inside of the outer peripheral side wall of the cap and the outer peripheral side of the projecting portion of the writing instrument body. If a 2nd fitting part is comprised by the said convex shape part in a cap and the said concave shape part in a writing instrument main body while comprising a part, a cap and a writing instrument main body can be easily carried out without requiring positioning in particular. Since it can be fitted and connected, and can be firmly connected in both the tensile direction and the bending direction at two locations, it can be used stably regardless of the use situation.
[0018]
When using a short writing instrument that can be wrapped, especially when the cap is fitted to the rear end of the writing instrument body, the outer periphery of the cap may apply hand force to the connecting part when grasping the writing instrument. Yes, not only the pulling force acting in the longitudinal direction but also the bending force acting in the radial direction requires the connection strength between the writing instrument body and the cap. Even if it takes, it becomes easy to design so that it can be used stably.
[0019]
In addition to these, if the tip of the convex portion arranged on the tip side of the cap is arranged so as not to protrude from the tip surface of the cap, the user can recognize a portion having a fitting function in particular from the appearance of the writing instrument. Therefore, it is possible to provide a writing instrument that can have this function and has a clean appearance.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0021]
FIG. 1 is a perspective view showing the entire writing instrument according to the present invention, and FIG. 2 is a perspective view showing a state in which the cap of the writing instrument is removed. 3 is a front view of the writing instrument, FIG. 4 is a side view showing the front end side of the writing instrument, and FIG. 5 is a side view showing the rear end side of the writing instrument. 6 is a cross-sectional view taken along the line AA in FIG. 3, and FIG. 7 is a vertical cross-sectional view of the entire writing instrument. 8 is a perspective view showing a state in which the cap is connected to the rear end side of the writing instrument main body during writing, and FIG. 9 is a perspective view showing a state in which the writing instrument is actually held and hand-written in a proper way. It is.
[0022]
As shown in FIGS. 1 to 8, the writing instrument 1 is detachably mounted on the writing instrument body 3 having a pen tip 31 on the front end side and the front end side of the writing instrument body 3 so as to cover the pen tip 31. The cap 2 is provided, and when writing in a proper way, as shown in FIG. 8, the front end 24 of the cap 2 is fitted and connected to the rear end 35 of the writing instrument body 3. It is.
[0023]
The connection between the rear end portion of the writing instrument body 3 and the tip end portion of the cap 2 is performed via a plurality of fitting portions, that is, the first fitting portion A and the second fitting portion B. These first and second fitting portions A and B are arranged concentrically with their axes aligned.
[0024]
That is, when the writing instrument 1 is used in a regular manner, as shown in FIG. 8, the front end side 24 of the cap 2 that does not touch the pen tip 31 is connected to the rear end side 35 of the writing instrument body 3. The first fitting portion A and the second fitting portion B can be detachably mounted, and only the front end side 24 of the cap 2 and the rear end side 35 of the writing instrument body 3 are connected. Preferably it is possible.
[0025]
According to this configuration, although not shown, even when two or more writing instruments 1 having the same structure are connected and used, the direction of the cap is always in the order of “cap, writing instrument body, cap, writing instrument body”. Since these are fixed and connected, it is possible to use while changing the writing instrument.
[0026]
FIG. 4 is a side view showing the writing instrument 1 from the front end side 24 of the cap 2, and FIG. 5 is a side view showing the writing instrument 1 from the rear end side 35. On the side 24, an outer peripheral side wall 21 having a cylindrical shape and a convex portion 22 positioned at the axial center of the outer peripheral side wall 21 are arranged. The writing instrument body 3 has a pen tip 31 on the front end side and a protrusion 32 on the rear end side 35, and a concave portion 33 is provided in the axial center portion of the protrusion 32.
[0027]
That is, the writing instrument body 3 is provided with a protrusion 32 that can fit the outer peripheral side wall 21 of the cap 2 and a concave portion 33 that opens at the axial center of the protrusion 32, The first fitting portion A is configured such that the inner side 23 of the outer peripheral side wall 21 and the outer peripheral side 34 of the projection 32 in the writing instrument body 3 can be fitted, and the convex portion in the cap 22 and the concave portion 33 in the writing instrument main body 3 can be fitted together to constitute the second fitting portion B. If it does in this way, a plurality of fitting parts A and B will be arranged centering on an axis. Therefore, the cap 2 and the writing instrument body 3 can be easily connected at any rotational phase position without requiring positioning.
[0028]
Here, as shown in FIG. 2, a small protrusion 25 may be provided inside the outer peripheral side wall 23 of the cap 2 so that the outer peripheral side 34 of the protruding portion 32 of the writing instrument body 3 can be fitted more firmly.
[0029]
The cap 2 is configured such that an outer peripheral side wall 21 is arranged on the outer side of the cap body 20 for airtightly surrounding the pen tip 31 via radial ribs 26, and between the cap main body 20 and the outer peripheral side wall 21. A ventilation space 27 is formed in the interior. In other words, the cap 2 has a safety measure structure that ensures air permeability even when an infant or the like accidentally swallows it and clogs the trachea. And the convex-shaped part 22 is comprised using the front-end | tip part of the said cap main body 20. As shown in FIG. That is, the 1st fitting part A and the 2nd fitting part B are comprised using the outer peripheral side wall 21 and the cap main body 20 of the cap 2 which gave such a safety measure, respectively.
[0030]
FIG. 3 also shows that the tip of the convex portion 22 arranged on the tip end side of the cap 2 does not protrude from the tip end surface of the cap 2. This means that the fitting function portion is not exposed to the appearance, and the writing instrument 1 has a functional and simple shape without impairing the appearance. In this way, the writing instrument 1 can be erected by placing the distal end surface of the outer peripheral side wall 21 on a horizontal plane.
[0031]
Further, FIG. 9 is a diagram showing a state in use of the writing instrument 1, but in the writing instrument 1 having a short length as illustrated, the cap 2 is connected to the rear end side of the writing instrument body 3. When used, the outer periphery of the cap 2 comes into contact with the base of the thumb and index finger. In the present embodiment, the writing instrument 1 as a whole has a gentle curve shape. Specifically, the cap 2 has a drum shape and the writing instrument body 3 has a drum shape so that the outer surfaces of both are smoothly continuous. According to this shape, it is easy to write and draw because it fits with the hand when used.
[0032]
Of course, as described above, since the fitting connection between the writing instrument body 3 and the cap 2 is simple and strong, stable use is ensured even in the case of the curved shape as described above. .
[0035]
【The invention's effect】
The present invention is implemented in the configuration as described above, and the effects described below can be obtained.
[0036]
That is, the present invention is a writing instrument comprising a writing instrument body having a pen tip on the front end side, and a cap detachably attached to the front end side of the writing instrument body so as to cover the pen tip, Since the writing instrument is characterized in that the cap can be detachably attached to the rear end side of the writing instrument main body via a plurality of fitting portions, compared with the above-mentioned prior literature and illustrated ones. The connection between the writing instrument body and the cap can be strengthened, and it can be used lightly and stably. That is, according to the configuration of the present invention, it is possible to provide a writing instrument that can firmly attach a cap to the rear end side of the writing instrument body without causing a decrease in ink capacity or unduly lengthening. It is.
[0037]
In this writing instrument, if a plurality of fitting portions are arranged concentrically with the cap and the writing instrument main body so that the axes coincide with each other, even when there are a plurality of fitting positions when fitting the cap and the writing instrument main body, In particular, the cap and the writing instrument main body can be easily and firmly fitted and connected without requiring positioning or the like.
[0038]
Furthermore, if a fitting part is provided between the front end side of the cap that does not touch the pen tip and the rear end side of the writing instrument body, the ink of the pen tip is attached to the rear end part of the writing instrument body through the cap. It will not be worn. For this reason, there is no inconvenience such as dirty hands when used in the manner of holding the envelope, and the writing instrument can be used without such anxiety.
[0039]
In addition, if the first fitting portion and the second fitting portion are made concrete as described above, the fitting portion can be configured by skillfully using the safety measure structure applied to the cap. Therefore, rational design is possible, and the structure can be simplified and the manufacturing can be facilitated.
[0040]
In addition to these, by disposing the tip of the convex portion arranged on the tip end side of the cap so as not to protrude from the tip end surface of the cap, the user can recognize the fitting portion without particularly recognizing the fitting portion. It is possible to provide a writing instrument that can have a function and has a clean appearance.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an entire writing instrument according to an embodiment of the present invention. FIG. 2 is a perspective view showing a state where a cap is removed from the writing instrument body of the writing instrument according to the embodiment. FIG. 4 is a front view of the writing instrument according to the embodiment. FIG. 5 is a side view of the writing instrument according to the embodiment as viewed from the front end side. FIG. FIG. 7 is a cross-sectional view of the entire writing instrument according to the embodiment. FIG. 8 is a rear end side of the writing instrument main body when the writing instrument according to the embodiment is used (written). FIG. 9 is a perspective view showing a state in which the hand is actually gripped and used (written) according to the embodiment. FIG. 10 is a reference perspective view showing a conventional example. Figure [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Writing instrument 2 ... Cap 3 ... Writing instrument main body 20 ... Cap main body 21 ... Outer peripheral side wall 22 ... Convex shaped part 23 ... Inner side 24 (outer peripheral wall) 24 ... Cap front end side 25 ... Small protrusion 26 ... Rib 27 ... Space 31 for ventilation | gas_flowing ... nib 32 ... rear end side protrusion 33 ... concave shape part 34 ... outer peripheral side 35 (in rear end side protrusion) ... writing instrument main body rear end side

Claims (4)

It is possible to perform a writing instrument body having a pen tip on a front end side, Ri name comprises a cap which is detachably mounted on the front end side of the writing instrument body so as to cover the nib, the retention wrapped in palm A writing instrument
A cylindrical outer peripheral side wall on the front end side of the cap and a convex portion located at the axial center of the outer peripheral side wall, and a protrusion that can fit the outer peripheral side wall on the rear end side of the writing instrument body And a concave portion that opens to the axial center portion of the protrusion,
A first fitting portion is constituted by the outer peripheral side wall of the cap and the projection portion of the writing instrument main body, and a second fitting portion is constituted by the convex shape portion of the cap and the concave shape portion of the writing instrument main body. A writing instrument comprising: the cap, wherein the cap can be detachably attached to the rear end side of the writing instrument body via the first fitting portion and the second fitting portion. 2. The writing instrument according to claim 1, wherein the first fitting part and the second fitting part are arranged concentrically with the cap and the writing instrument main body so that the axes coincide with each other. In a state where the cap is attached to the front end side of the writing instrument body, the first fitting portion and the first fitting portion are arranged between the front end side of the cap positioned further forward than the pen tip of the writing instrument body and the rear end side of the writing instrument body The writing instrument according to claim 1, wherein two fitting portions are provided. The writing instrument according to claim 1, 2, or 3, wherein the tip of the convex portion arranged on the tip side of the cap does not protrude from the tip surface of the cap.

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