JP2011154274A - Writing implement - Google Patents

Abstract

An object of the present invention is to provide a writing instrument that is easier to use for children and that can provide a sufficient feel of a writing brush.
In order to solve the above problems, a writing instrument according to the present invention has a writing part that comes into contact with an index finger, a grip part that is gripped by a palm, and an assistant part that is provided between the writing part and the grip part. And the writing part and the assistant part are rotatably connected by the first connecting part, and the assistant part and the grip part are rotatably connected by the second connecting part.
[Selection] Figure 1

Description

The present invention relates to a writing instrument, and more particularly to a writing instrument suitable for practicing brush writing.

Most writing instruments such as pencils and pens have a linear shaft body as a main body, and a member for drawing letters and figures in contact with paper such as a pen tip is provided at the tip of the shaft body. Similarly, the writing brush has a hair shaft attached to the tip of a linear shaft, and its structure has not changed since ancient times.

On the other hand, Patent Document 1 and Patent Document 2 describe an invention in which a writing instrument is attached to a fingertip. Patent Document 3 discloses a ballpoint pen having two arm portions, and discloses that a finger is put between the two arm portions and held.

JP 2008-273030 A JP 2008-265047 A Publication US Published Patent 2004/1738

In elementary school, students learn to write with a brush. At this time, a normal brush is used. However, there is a problem that children cannot adapt to the writing environment using a brush. Even children who write letters relatively accurately with a pencil or other hard brush are difficult to use the brush well, and it is even more difficult to improve their skills. In addition, individual differences in learning progress occur.

Beginners who begin to learn brush writing, not just elementary school students, will find it difficult to move from an environment that uses only pencils and pens to an environment that uses brushes. The main reasons for this difficulty are the use of delicate hands when writing letters with a brush, and problems with the material and structure of the brush. The pressure on the paper at the tip of the brush (writing pressure) cannot be adjusted, and children are not good at writing letters with a brush. Therefore, there is a need for a writing instrument that is easy to use even if you are a beginner in brush writing, and that can be used easily as a practice for pencils and brushes.

The writing tools described in Patent Literature 1 and Patent Literature 2 have different shapes from those of conventional writing tools. However, it is directly attached to one finger such as an index finger and a character is written only by the movement of the finger. Such a writing instrument may be effective for people with other finger disabilities, but it is not easy for a normal person to use than a normal writing instrument. Moreover, such a writing method is far from a normal writing method. Even if the user learns how to use the writing tools described in Patent Document 1 and Patent Document 2, it hardly leads to the calligraphy using ordinary writing tools. In particular, it is difficult to learn the important element of manipulating the writing instrument while feeling the pressure with the index finger. The pen described in Patent Document 3 may also have an effect of increasing stability, but the basic usage is the same as a conventional hard brush, and it is easy to detect the pen pressure necessary for learning a brush. There is no sense of stability or feeling that the finger and the writing instrument are integrated.

It is an object of the present invention to provide a writing instrument that is easier to use for children and that can provide a sufficient brush brush feel. More specifically, it is a writing instrument that can feel the power of a delicate fingertip and can write something similar to the writing of a brush.

In order to solve the above-described problems, a writing instrument of the present invention has a writing part that comes into contact with the index finger, a grip part gripped by the palm, and an assistant part provided between the writing part and the grip part. And the assistant part are rotatably connected by the first connecting part, and the assistant part and the grip part are rotatably connected by the second connecting part. It can be implemented as a brush by providing ears of hair in the writing part. It is preferable that the rotation center of the writing part and the assistant part is aligned with the position of the first joint of the index finger, and the rotation center of the assistant part and the grip part is adjusted to the position of the third joint of the index finger. In addition, the writing part has an index finger contact indentation, the writing part and support part have a thumb contact indentation, and the grip part has a middle finger contact recess, a finger contact recess and a little finger contact recess. It is preferable to be provided.

The writing instrument of the present invention has a brush body divided into three parts, unlike a conventional linear stick like a pencil or brush. The connection between these divided parts can be bent by applying a force. By bending the connecting part by applying force to the main body, the brush surface is properly adhered to the surface of the index finger, and a very light repulsive force is applied to the belly of the fingertip. The user can write while feeling the same force as the conventional “repulsive force applied to the finger when writing a character using a brush” by applying a force to the finger and writing the character while feeling the repulsive force. Characters written in this way may be written in a state where the distance between the fingertip and the paper is much closer than that written using a conventional brush, which more closely matches the user's intention.

In addition, the writing unit and the assistant unit are rotatably connected by the first connection unit, and the writing unit and the assistant unit are configured to be bendable. The rotation center of the writing unit and the assistant unit is the position of the first joint of the index finger. You can use your fingers with natural movements. As a result, it is possible to obtain a delicate sensation in which the paper and the finger touch each other as if a normal brush is used for writing.

Whereas the shaft of a conventional writing instrument has a constant thickness at any part, it is preferable to change the thickness and shape according to each part in the writing instrument of the present invention. By taking a special shape in this way, the user's way of holding is limited, and all fingers of the dominant hand are used appropriately. Having a brush body with a unique shape makes it easier to improve the fingering of children when writing. By using all your fingers, you will naturally learn the correct way to write with a brush. The following explains how to use each finger in more detail.

First, the effect on the middle finger, ring finger, and little finger will be described. When writing, these three have an important role of “gripping”. When holding a writing instrument, usually three fingers are lightly grasped. Just like holding an egg in your hand. At the time of writing, the index finger bends and stretches, but the remaining three fingers are also required to strengthen or weaken the grip. Since all fingers are interlocked, it is natural to make the same movement. Therefore, it is effective to make the grip portion have a thickness and a shape that allows three fingers to be gripped naturally.

Next, the operation of the thumb will be described. The role of the thumb is to assist in writing letters in a stable and precise manner. Rather than writing with the index finger alone, attaching a thumb to it makes it possible to perform more precise writing with a sense of stability. In conventional pencils and brushes, the thumb, forefinger, and middle finger pressed the writing instrument shaft in three directions. The fingers in the three directions applied force and pressed each other to balance the force, writing stable and precise characters. Therefore, a more stable writing is possible by installing a recess for placing the thumb on the writing instrument.

The present invention can provide a writing instrument having a great effect on the practice of writing brush. The effect of being able to feel the sense of the fingertips when writing with a brush with more amplification, being able to write letters as desired, and being able to acquire the correct way of holding naturally. Have. In addition, after learning the basic usage of writing brushes using the writing instrument of the present invention, the image that writing brush learning is difficult becomes thin, and subsequent writing learning can proceed smoothly without any weakness. .

It is a front view which shows the basic structure of a writing instrument. It is a front view which shows the use condition of a writing instrument. It is a front view which shows a writing part. It is the same top view. It is a front view which shows the state which put the index finger in the hollow for index finger contact. It is a front view which shows the dent for thumb contact. It is an enlarged front view which shows the part of the hair ear. It is a front view which shows the state of the hair at the time of writing. It is a top view which shows an assistant part. It is the bottom view. It is a top view which shows a grip part. It is the same rear view. It is a front view which shows the state which bent the writing part to the limit in the use direction. It is a front view which shows the state which bent the grip part to the limit in the use direction.

EMBODIMENT OF THE INVENTION The form for implementing this invention is demonstrated based on drawing. FIG. 1 is a front view showing a basic structure of the writing instrument, and FIG. 2 is a front view showing a usage state of the writing instrument. In addition, although drawing and the following description are based on the example of the writing instrument used with a right hand, if carried out symmetrically, it cannot be overemphasized that it can implement also for the left hand. Moreover, FIG. 1 shows only the basic structure, and the illustration of the depression formed in the writing instrument is omitted.

The main body portion of the writing instrument 1 is composed of three divided members, and is a writing portion 2, an assistant portion 3, and a grip portion 4 from the tip portion (left side in FIG. 1). The main body divided into three parts is joined by two connecting members. The writing part 2 and the assistant part 3 are connected to each other by a first connecting part 5, and the assistant part 3 and the grip part 4 are connected by a second connecting part 6 so as to be rotatable.

Here, a thin metal bar is used for each connecting portion. It bends easily when force is applied, and has elasticity enough to feel some resistance. For example, it is assumed that a metal bar is a shape memory material and generates a repulsive force when bent. The repulsive force may be small enough not to interfere with finger movement. Specifically, it can be bent if there is enough force to press the keyboard. The metal bar is inserted into each part by about 10 mm and fixed by bonding.

Since the size of the hand and the gripping strength vary greatly depending on the user, the writing part 2, the assistant part 3, and the grip part 4 are made of a soft and somewhat deformable material. Moreover, in order to keep it for a long time, a light thing is preferable. Light rubber materials are particularly suitable. Each part is chamfered for safety.

At the time of use, the writing instrument is bent as shown in FIG. FIG. 2 shows the positional relationship between the hand and the connecting portion. The first joint 5 corresponds to the first joint of the index finger. The first joint portion 5 is provided so that the writing portion 2 and the assistant portion 3 rotate with respect to the position of the first joint of the index finger as a rotation center. When the first joint of the index finger is bent, the first joint 5 is also bent at the same time. Thus, the natural movement of the index finger is realized by the first joint 5.

On the other hand, the second joint 6 corresponds to the third joint of the index finger. The second joint portion 6 is provided so that the assistant portion 3 and the grip portion 4 rotate with respect to the position of the third joint of the index finger. By the support of the second joint portion 6, the second joint of the index finger can move stably without shaking. By freely moving the first joint and the second joint of the index finger, it becomes possible to write characters freely.

The main body is divided into three parts because it allows the finger to move most naturally and is close to the feeling when using a writing brush. For example, when the main body is divided into two, the movement of the finger joint is not reflected well and it is difficult to write. If the main body is divided into four or more parts, it will not be stable when the brush body is held, and a slight movement of the finger will cause the entire brush to sway from side to side. By dividing into three parts, the movement of the brush body is moderately controlled, and the index finger can be moved freely.

FIG. 3 is a front view showing the writing unit, and FIG. 4 is a plan view thereof. The whole is made into a shallow bowl shape so that it is more closely attached to the index finger. The upper recess 7 is an index finger contact recess for placing an index finger (fingertip to first joint), and has an index finger shape. The depth of the indentation should be about 6-8mm so that the shallower side does not press the index finger side. This is a structure in which only the abdominal surface is in close contact so that the belly of the index finger can feel a sufficient pressure.

FIG. 5 is a front view showing a state where the index finger is placed in the index finger contact recess 7. The end of the writing part (the end on the side facing the assistant part) does not cover the first joint of the index finger. This is to prevent the bending of the joint. The tip of the writing part protrudes about 5 mm from the tip of the index finger.

A hatched portion 8a in FIG. 3 is a thumb abutment recess for placing a thumb. A recess for abutting the thumb is also provided in the assistant part 3. The thumb contact recess 8a of the writing unit 1 and the thumb contact recess 8b of the assistant unit constitute an integral thumb contact recess. FIG. 6 is a front view showing a recess for thumb contact. By providing the thumb abutment recess 8 in this manner, writing can be performed while maintaining the “correct thumb position”. Since the size of the thumb varies depending on the user, the size of the indentation is relative, but the thumb abutment indentation 8a of the writing part is about half the size of the writing part both vertically and horizontally. Appropriate depth is about 5 mm for the shallow part of the thumb and about 8 mm for the deep part.

The size of this writing part, C is the value obtained by adding about 15 mm to the thickness of the index finger, D is the value obtained by adding about 5 mm to the length of the tip of the index finger to the first joint, and E is about equal to the width of the index finger. The value is 4mm added.

A writing member is attached to the tip of the writing unit 2. Here, a hair brush 9 is detachably attached and used as a practice brush. FIG. 7 is an enlarged front view showing a hair ear portion. It has a structure that can be removed / replaced by using the brush brush with an improved part. Moreover, although a small brush is the center, a large brush can also be attached. It can also be used for paint brushes such as flat brushes and face brushes by matching the standards of the base of the ears. The length of the ear 9 is about 12 mm to 20 mm in the case of a small brush. This is shorter than the conventional product, but has the advantage of feeling the pressure of the brush closer. Cleaning after use can be performed efficiently by removing the “ear” part. The diameter of the hole for attaching the ear is basically about 12 mm, and the depth of the hole is about 20 mm.

The ear material is basically animal hair with high resilience such as weasel and horse. It is possible to change to an ink tank type by attaching nylon fiber ears, but in that case an ink tank is provided inside the writing part.

FIG. 8 is a front view showing the state of the ears at the time of writing. It shows the positional relationship between the fingertip and the brush ears at the time of writing. An auxiliary line is drawn from the tip of the index finger. The relationship between the intersection P between the paper surface and the auxiliary line and the brush tip is important. The tip of the brush does not reach the intersection point P even when the brush head is pressed to the maximum. As a result, no matter how the hand is moved in the use of the present invention, the hair tip is inside the fingertip, so that the character can be stably written without impairing the feeling of writing the character with the fingertip. If the tip of the hair is outside the fingertip, it will be difficult for the child to use it because of the handwriting that is not expected from the movement of the finger. For this reason, the length of the “brush” of the brush is preferably about 15 mm. The head is about 12mm, and this is connected straight and inserted deeply until the base of the brush is not visible. In addition, the length of the hair tip that goes out is made at least about 10 mm. The length of the hair ends does not reach the height C of the body of the writing part. When the length of the hair tip is L, L = 10 mm <C.

FIG. 9 is a plan view showing the assistant part, and FIG. 10 is a bottom view thereof. The recess 7b provided in the center portion is an index finger contact recess for placing an index finger (second joint to third joint), and has a depth of about 6 to 8 mm. As described above, the assistant portion 3 is also provided with the thumb contact recess 8b. Here, put the belly part of the thumb. The size of the indentation 8b for thumb contact is about half of the assistant part in both the vertical and horizontal directions, and the depth is about 5 to 8 mm in accordance with the depth of the thumb. Further, an interference prevention recess 10 for avoiding interference with the grip portion 4 is also provided. The size of the recess 10 is about half that of the assistant part, and the depth is about 8 mm. The width dimension F is equal to the width of the index finger, plus or minus 4 mm, the height G (not shown) is the index finger thickness plus 15 mm, and the length H is the second to third joints of the index finger. Use the joint length as a guide.

The assistant unit 3 is in close contact with the second joint to the third joint so as to support the joint from below. The assistant part 3 is set so as not to overlap the second joint. This is because the bending of the second joint is not hindered. When writing with a finger bent, it will support the second joint of the index finger, helping to write stably.

FIG. 11 is a plan view showing a grip portion, and FIG. 12 is a rear view thereof. The three indentations 11, 12, and 13 shown in the drawing are a middle finger abutting indent 13, a scooping finger abutting indent 12, and a little finger abutting indent 11. If you put three fingers, middle finger, medicine finger, and little finger, according to these depressions, you can naturally acquire the “right finger grip when writing letters”. The grip is shaped like a round, long clam, and almost completely touches the hand when in use. As a result, the gripping force can be received over a wide area, and stress is prevented from being applied only to specific parts. The dimensions are about 50 mm, where I is the same length as the fingertip to the base of the thumb. J is 50% to 65%. K is about 35% of I.

FIG. 13: is a front view which shows the state which bent the writing part to the limit in the use direction. The angle α is suitably from 0 ° to 60 °. In order to bend this portion, it is necessary to bend the first joint and the second joint of the index finger. By restricting α to 60 ° or less, it is possible to learn how to move the index finger at an appropriate angle without writing with the index finger bent excessively.

FIG. 14 is a front view showing a state where the grip portion is bent to the limit in the use direction. The angle β is made as 0 ° to 60 °. This is because there is an angle that is most easily held by the user in the range of 0 ° to 60 ° considering the structure of the hand.

1. Writing instrument Writing part 3. 3. Assistant part 4. Grip part First connection unit 6. Second connection unit 7. 7. Recess for index finger contact 8. Indentation for thumb contact Hair ears10. 10. Interference prevention recess 11. Indentation for little finger contact 14. Indentation for a medicine finger contact Middle finger contact recess

Claims (4)

The writing part that comes into contact with the index finger, the grip part that is gripped by the palm, and the assistant part that is provided between the writing part and the grip part, the writing part and the assistant part are rotatably connected by the first connection part A writing instrument in which the assistant part and the grip part are rotatably connected by the second connecting part. The writing instrument according to claim 1, wherein ears of hair are attached to the writing unit. The rotation center of the writing part and the assistant part is aligned with the position of the first joint of the index finger, and the rotation center of the assistant part and the grip part is aligned with the position of the third joint of the index finger. Writing instruments. The writing part is provided with an index finger contact depression, the writing part and the assistant part are provided with a thumb contact depression, and the grip part is provided with a middle finger contact recess, a finger contact contact recess, and a little finger contact recess. The writing instrument according to claim 3.

Images