JP3137267U - Writing instrument with permanent magnet - Google Patents

Abstract

An object of the present invention is to provide a writing tool that can be adsorbed directly to a panel or the like without passing through other instruments such as a pen box, and can be obtained at a low cost. A writing instrument with a permanent magnet that can be easily attached to and detached from the door, side wall, etc. is provided.
A writing instrument with a permanent magnet in which a permanent magnet 10 is fixed to a main shaft 1 of a writing instrument P, wherein the permanent magnet is a samarium cobalt permanent magnet or a neodymium permanent magnet. A writing instrument with a permanent magnet.
[Selection] Figure 2

Description

The present invention relates to a writing instrument with a permanent magnet. More specifically, the present invention relates to a writing instrument with a permanent magnet that can be directly adsorbed and supported on a refrigerator door, panel, etc. made of a magnetic material when not in use, and is convenient for writing a little memo every day.

There are various writing tools, such as pencils, brushes, fountain pens, ballpoint pens, and mechanical pencils. Some of these writing instruments are a set of a writing instrument and a pen box. In particular, a permanent magnet is attached to the pen box, and the pen box is attached to the panel via the permanent magnet. Adsorb and place multiple writing utensils in it for temporary storage.

Describing in detail about such a pen box, when fixing a writing instrument such as a ballpoint pen to a panel made of a magnetic material such as a refrigerator, a steel desk, or a cabinet, generally a pen box with a permanent magnet formed of resin or the like is used. Adhere to the panel and store writing instruments such as ballpoint pens in this pen box. However, such a pen box has the following problems, and when the pen box is a synthetic resin molded product, it must be performed after raising the mold, resulting in high cost. In addition, since a plurality of writing instruments are usually stored, a strong permanent magnet that can withstand the weight and weight of the writing instrument must be used, which also increases the cost. If the yoke member is used to enhance the attractive force of the permanent magnet, the panel is easily damaged.

Alternatively, a writing instrument such as a ballpoint pen is often used when performing meter reading, inspection, repair or measurement of electricity, gas, water, etc. around a house or in a building. In such a case, the work of writing letters, numbers, etc. and other work such as inspection are often repeated alternately. That is, in many cases, after writing letters, numbers, etc., some work is performed using, for example, a tool, and letters, numbers, etc. are written again. The writing instrument is usually stored and locked in the pocket of the worker's clothes after the writing work is performed until the next writing work, but the writing tool is put in and out of the pocket or locked in the pocket. It is troublesome to do. Such a situation is likely to occur when a writing instrument is used in a place where there is no writing table such as a desk, because the writing instrument cannot be conveniently placed in a nearby facility or the like.

On the other hand, a number of contrivances have been made for such a writing instrument with a permanent magnet, and among them, the following ideas regarding a writing instrument with a magnetic material have been proposed. This device aims to promote the metabolism by applying a magnetic field to the fingertip and back of the hand holding the writing instrument, and to eliminate the stiff shoulders and fatigue to keep the health healthy. Permanent magnets are provided at the peripheral side surface positions. As a result, the magnetic field of the permanent magnet acts on the fingertip or back of the hand holding the writing instrument to promote metabolism, so that stiff shoulders, fatigue, etc. are naturally eliminated and health can be maintained (Patent Document 1).

Utility Model Registration No. 3019700

As described above, as represented by Patent Document 1, the conventional writing instrument with a permanent magnet has the following problems.

That is, the first problem of the conventional writing instrument with a permanent magnet is mainly to apply a magnetic field to the fingertip and back of the hand, so even if a permanent magnet is provided on the writing instrument, the attractive force of the permanent magnet is weak. . Therefore, even if the writing implement is adsorbed on the door of the refrigerator or the like, it is easily dropped.

Secondly, in the case of the aforementioned pen box, it sticks out of the panel. It would be very convenient if the writing instrument could be easily attached and detached directly to the surface made of magnetic material such as the side wall of the refrigerator, instead of storing the writing instrument in the pen box. For example, when a housewife in the home comes up with a note in the middle of cooking or wants to write down an item that she wants to buy, she may have a hard time finding a writing tool nearby. And often I forget what I should write down while looking for a writing instrument. In such a case, if a writing instrument is held in a conspicuous place such as the door of the refrigerator next to it, it is convenient because it can be written down immediately without the trouble of searching for the writing instrument.

In addition, in outdoor work such as meter reading for electricity, gas, water, etc., equipment inspection, repair or measurement, writing instruments are generally used after one writing work until the next writing work. Store or lock it in your work clothes pocket. However, it is troublesome to put in and take out the writing instrument from the pocket and remove it from the pocket.

Therefore, the present invention is a writing instrument that can be adsorbed directly to a panel or the like without using any other instrument such as a pen box, and can be obtained at a low cost. It is an object of the present invention to provide a writing instrument with a permanent magnet that can be easily adsorbed and detachably attached to a door, a side wall or the like of a side refrigerator.

Therefore, the present inventors have focused on the fact that the refrigerator door is a magnetic material, and developed the idea of attaching the permanent magnet to the writing instrument so that it is directly attracted to the refrigerator. Based on this idea, the permanent magnet As a result of prototyping the attached writing instrument, we found that it was possible to easily attach and detach the writing instrument using a familiar refrigerator without providing a new tool. The writing instrument with a permanent magnet of the present invention is embodied on the basis of such knowledge, and the invention of claim 1 is a writing instrument with a permanent magnet characterized in that a permanent magnet is fixed to the main body shaft portion of the writing instrument. is there. In addition to the above-mentioned features of the invention of claim 1, the invention of claim 2 attaches a permanent magnet to the outer peripheral surface of the main body shaft portion of the writing instrument, and causes the magnetic pole surface to slightly protrude from the outer peripheral surface. This is a writing instrument characterized by that. Further, in addition to the above feature of the invention of claim 1, the invention of claim 3 has a permanent magnet, wherein the permanent magnet is ring-shaped and fitted to the outer peripheral surface of the main body shaft. It is a writing instrument. The invention of claim 4 is a writing instrument with a permanent magnet, in addition to the above feature of the invention of claim 1, wherein the permanent magnet is a samarium cobalt permanent magnet or a neodymium permanent magnet. is there.

According to the present invention, a permanent magnet of a size that does not protrude from the outer peripheral surface is fixed to the main body shaft portion of the writing instrument, and the magnetic pole surface is exposed on the outer peripheral surface. Without, the writing instrument can be fixed directly to the panel. Manufacturing costs can be reduced. Moreover, the writing instrument does not roll on a horizontal panel such as a steel desk, and the yoke is not used, so the panel is not damaged. In addition, even when working outdoors, the writing utensils can be easily adsorbed and supported on the wall made of magnetic material, the storage shed, the tin roof, etc., and it is easy to use because it can be easily detached. Is.

Embodiments of the present invention will be specifically described below based on examples of the present invention shown in the accompanying drawings.

First, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing a state where a small piece of permanent magnet is mounted on the shaft body of the ballpoint pen according to the present embodiment. FIG. 2 is a cross-sectional view showing a use state of a ballpoint pen according to another embodiment. FIG. 3 is a perspective view showing a state in which a long permanent magnet is attached to a shaft body of a mechanical pencil according to another embodiment. FIG. 4 is a perspective view showing a state in which a ring-shaped permanent magnet is mounted on a shaft body of a mechanical pencil according to another embodiment. FIG. 5 is a perspective view showing a state in which a cylindrical permanent magnet is attached to a pencil shaft body according to another embodiment.

In FIG. 1, the state which provided the small piece of the permanent magnet in the main-body shaft part is shown. In the drawing, the writing instrument P is a ballpoint pen, and a cap 3 is placed on the upper part of the main body shaft portion 1, a pen tip (not shown) is provided inside the cap 3, and a base portion 5 is provided on the lower end of the drawing. Then, small pieces of permanent magnets 10 are attached to appropriate portions of the outer peripheral surface of the cylindrical main body shaft portion 1. The permanent magnet 10 is a thin and flat disk shape smaller than the diameter of the main body shaft portion 1, and the permanent magnet 10 is fixed to a hole (not shown) formed at a predetermined position of the main body shaft portion 1 through press-fitting or an adhesive. The permanent magnet 10 is magnetized so as to form an NS magnetic pole in the normal direction of the outer peripheral surface of the main shaft 1, that is, in a direction perpendicular to the tangent at that point at one point on the outer peripheral curved surface. FIG. 2 shows a state in which another form of writing implement is adsorbed. The writing instrument P is a ballpoint pen and includes a base 5 above the body shaft 1 and a pen tip 2 below the body shaft 1. And the attachment hole 4 is provided in the appropriate location of the outer peripheral surface of the cylindrical main-body shaft part 1, the permanent magnet 5 is inserted in this, and it adheres using an adhesive agent. The permanent magnet 10 has a thin and flat disk shape with a diameter smaller than the diameter of the main body shaft portion 1. The magnetic pole surface of the permanent magnet 10 is fixed so as to slightly protrude from the mounting hole 4. The degree of protrusion of the magnetic pole surface is set to a level necessary to fill the difference between the shaft diameter of the main body shaft portion 1 and the outer diameter of the base portion 5 in the upper part of the figure. Alternatively, when a cap (not shown) is put on the pen tip 2, the protruding degree is set to a level necessary for filling the difference from the outer diameter of the cap. Of course, the magnetic pole surface of NS may be the same as the outer peripheral surface of the main body shaft portion 1 or may be attached so as to be slightly recessed from the outer peripheral surface of the cap. As in the case of FIG. 1, the direction of the magnetic pole in the permanent magnet 10 is magnetized in the normal direction of the outer peripheral surface of the main body shaft portion 1, that is, in a direction perpendicular to the tangent at that point at one point on the outer peripheral curved surface. NS magnetic poles are formed. The writing tool P has such a configuration, and the writing tool P is attracted and held on a magnetic panel 11 such as a refrigerator door through a permanent magnet 10 bonded and fixed to the main body shaft portion 1 of the writing tool P. The

FIG. 3 is a perspective view showing a state in which a long permanent magnet is provided on the main body shaft portion of the writing instrument. The writing tool P is a mechanical pencil according to another embodiment, and a base portion on the right side of the main body shaft portion 1. 5. A nib 2 is provided on the left side. And the elongate permanent magnet 10 is adhere | attached along the axial direction in the appropriate location of the outer peripheral surface of the cylindrical main-body shaft part 1. The permanent magnet 10 is magnetized in the normal direction of the outer peripheral surface of the main shaft 1, that is, an NS magnetic pole is formed in a direction perpendicular to the tangent at that point at one point on the outer peripheral curved surface.

FIG. 4 shows a writing instrument P having another form. The writing instrument P is a mechanical pencil, and includes a base 5 on the right side of the main shaft 1 and a pen tip 2 on the left. Then, a ring-shaped permanent magnet 10 is fitted to the outer peripheral surface of the main body shaft portion 1 at an appropriate position on the outer peripheral surface of the cylindrical main body shaft portion 1. The dimensions of the ring-shaped permanent magnet 10 are, for example, a ring with a thickness of 1 mm and a width dimension of 8 mm. Here, the magnetic pole direction of the ring-shaped permanent magnet 10 will be described. NS magnetic poles are formed in the diameter direction of the permanent magnet 10, that is, one ring-shaped semicircular part is an N pole and the other semicircular part is an S pole. Alternatively, N and S poles are alternately formed in a multipolar manner along the outer peripheral surface. In this example, the permanent magnet 10 is fixed to the outer peripheral surface of the main body shaft portion 1 with an adhesive. Since the attachment hole is not formed as in the example of FIG. 2, the writing instrument can be easily manufactured correspondingly, and can be applied to an existing ballpoint pen as it is. In addition, FIG. 5 shows a writing instrument P of another form. The writing instrument P is a pencil, and a pencil core 6 penetrates in the axial direction of the main body shaft portion 1. A cylindrical permanent magnet 10 is fitted into the mounting hole 4 penetrating the cross section of the main body shaft 1 and intersecting with the core 6 and fixed using an adhesive. The dimension of the permanent magnet 10 is, for example, 3 mm in diameter. The cylindrical permanent magnet 10 is magnetized so as to form an NS magnetic pole in this axial direction.

It is comprised as mentioned above, Next, an effect | action is demonstrated.

When the main body shaft portion 1 of the writing instrument P shown in the embodiment is brought close to the panel 11 made of a magnetic material, the writing instrument P is attracted to the panel 11 by the permanent magnet 10 as shown in the sectional view of FIG. That is, the writing tool P is attracted and held by a magnetic panel 11 such as a refrigerator door through the permanent magnet 10 fixed to the main body shaft portion 1 of the writing tool P. For example, when a housewife comes up with a memo during cooking or wants to write down what he wants to buy, he keeps the writing utensils adsorbed and held in a conspicuous place such as a refrigerator door, It is convenient because you can write down your notes immediately without the trouble of searching. Further, the permanent magnet 10 cannot be seen from the front of the panel 11, and there is no extra protrusion like a conventional pen box, and it is neat and unobtrusive. Since the attachment hole 4 is machined into the main body shaft portion 1 of the writing instrument P such as a ballpoint pen or a mechanical pencil and the permanent magnet 10 is embedded, or the permanent magnet 10 is simply bonded to the main body shaft portion 1, the cost can be reduced.

In addition, when working outdoors such as meter reading for electricity, gas, water, etc., inspection and repair of equipment, etc., writing instruments will be used where there is no writing stand such as a desk. In such a case, there is the inconvenience of putting in and out the writing tool from the pocket of work clothes, but by using a writing tool with a magnet, a tin wall made of magnetic material near the work place, a steel storage room, a tin roof, etc. It is easy to use because it can absorb writing instruments easily.

Since the permanent magnet 10 is attached to the main body shaft portion 1, for example, when placed on the surface of a steel desk, the writing instrument P is not attracted to the desk surface and does not roll off. If the exposed N and S magnetic poles of the permanent magnet 10 are made the same magnetic pole, for example, the permanent magnets 10 of a plurality of writing utensils P repel each other in the pen box, making it difficult to come into contact with each other. There is no friction between them.

As the material of the permanent magnet, for example, rare earth is preferable. In particular, the writing instrument shown in FIGS. 1, 2 and 5 is preferably, for example, a rare earth magnet. Among them, a samarium cobalt magnet (Sm—Co) or a neodymium permanent magnet (Nd—Fe—B) is strong even in small pieces. The long permanent magnet shown in FIG. 3 uses a ferrite magnet obtained by sintering ferrite magnetic powder, or a ferrite rubber or ferrite plastic magnet obtained by mixing and hardening ferrite magnetic powder with a synthetic resin or synthetic rubber. Permanent magnet material has a weak magnetic force, but it is economical because it is inexpensive. As shown in the drawing, the weakness of the attractive force of the permanent magnet material is reinforced by increasing the length or increasing the size as much as possible. In the case of the ring magnet shown in FIG. 4, a permanent magnet made of a rare earth that is preferably excellent in the magnetic force of the material is preferable in order to reduce the protrusion margin from the outer peripheral surface of the main body shaft portion of the writing instrument. The material or size of the permanent magnet is appropriately selected within a range sufficient to support the weight of the writing instrument P, and the attractive force of the writing instrument P basically depends on the magnetic force of the permanent magnet material. When selecting a permanent magnet material having a small magnetic force, the permanent magnet is increased in size to increase the adsorption area. On the contrary, when a permanent magnet material having a large magnetic force is selected, the size of the permanent magnet 10 can be reduced, the adsorption area can be reduced, and the entire writing instrument P can be made compact.

In addition, the usage method of the permanent magnet adopted in the writing instrument with a permanent magnet of the present invention is not limited to writing instruments such as a brush, a fountain pen, a ballpoint pen, a pencil, and a mechanical pencil, but an inspection tool used for outdoor work, Permanent magnets may be attached to a tape measure, tool, etc., and these may be adsorbed on the side panel and removed for use as necessary.

It is a perspective view which shows the state which mounted | wore the small-piece permanent magnet with the axial main body of the ball-point pen which concerns on a present Example. It is sectional drawing which shows the use condition of the ball-point pen which concerns on another form. It is a perspective view which shows the state which mounted | wore with the elongate permanent magnet in the axis | shaft main body of the mechanical pencil which concerns on another Example. It is a perspective view which shows the state which mounted | wore the ring-shaped permanent magnet to the axis | shaft main body of the mechanical pencil which concerns on another Example. It is a perspective view which shows the state which mounted | wore the cylindrical main body with the axial main body of the pencil which concerns on another Example.

Explanation of symbols

P Writing tool 1 Main body shaft 2 Pen tip 3 Cap 4 Mounting hole 5 Base 6 Core 10 Permanent magnet 11 Panel

Claims (4)

A writing instrument with a permanent magnet, wherein a permanent magnet is fixed to a main body shaft portion of the writing instrument. The writing tool with a permanent magnet according to claim 1, wherein a permanent magnet is fixed to the outer peripheral surface of the body shaft portion of the writing tool, and the magnetic pole surface is slightly projected from the outer peripheral surface. The writing instrument with a permanent magnet according to claim 1, wherein the permanent magnet is ring-shaped and is fitted on an outer peripheral surface of the main body shaft. The writing instrument with a permanent magnet according to claim 1, wherein the permanent magnet is a samarium cobalt permanent magnet or a neodymium permanent magnet.

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