JP2002002182A - Grip for writing implement and writing shaft - Google Patents

Abstract

(57) [Summary] [Problem] A moderate cushion effect can be given,
And it is a grip for writing implements that can improve durability. SOLUTION: On an outer surface 12a of a grip body 12, a plurality of groups 16 each composed of a plurality of projecting pieces 14 protruding in an outer diameter direction that can be bent by a gripping force are separated in a circumferential direction of the grip body 12, and a plurality of groups 16 are provided. For example, three are provided. When viewed along a cross section parallel to each protruding piece 14 of each group 16, the height of each protruding piece 14 is adjusted to the grip body 1 where the protruding piece 14 is not formed.
The second outer surface 12a is set so as not to protrude in the outer diameter direction from an extension of the contour of the outer surface 12a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a writing instrument grip and a writing shaft provided with the writing instrument grip.
The present invention relates to improvement of a writing instrument grip.

[0002]

2. Description of the Related Art Conventionally, as a grip for a writing instrument of this type, for example, there is a grip described in JP-A-10-181274 or JP-A-2000-108575. In each of the grips described in these publications, a plurality of plate-like projections projecting in the radial direction are formed on the outer peripheral surface of the grip body. By forming such plate-like projections, a soft touch can be obtained even if the grip is made of a material having a relatively high hardness. Has the effect of making it less slippery.

[0003]

However, the plate-like projections described in the above publications are formed over the entire circumferential direction, and some plate-like protrusions are not formed completely over the entire circumferential direction. However, basically, the plate-like projection protrudes in the outer radial direction from the grip body. Therefore, when gripped, the plate-shaped projections can be tilted to give a good feeling, while the force for regulating the plate-shaped projections is weak,
Even if the gripping force is released, there is a problem that the plate-like projection remains in a collapsed state without being restored. In addition, since the restoring force of the plate-like projections is further reduced by long-term use, such a problem becomes remarkable, and there is a problem that durability is poor. Also,
Since the plate-like projections fall down in a chain and the finger tends to move easily, there is also a problem that the finger is burdened to suppress the movement, resulting in fatigue.

The present invention has been made in view of the above problems, and provides a writing instrument grip and a writing shaft provided with the writing instrument grip, which can provide an appropriate cushioning effect and can improve durability. That is its purpose.

[0005]

According to one aspect of the present invention, there is provided a grip for a writing instrument, wherein a plurality of outer diameters which can be bent by a gripping force are provided on an outer surface of the grip body. Group consisting of projecting pieces protruding in the direction
A plurality of grips which are provided apart from each other in the circumferential direction of the grip body and which have a height which is not formed by the height of each protruding piece when viewed along a cross section parallel to each protruding piece of each group. It is characterized in that it is set so as not to protrude in the outer diameter direction from an extension of the contour of the outer surface of the main body. Since the protruding pieces do not protrude in the outer diameter direction from the extension of the contour of the outer surface of the grip body where the protruding pieces are not formed, both ends of each protruding piece extend in the height direction. , Is completely fixed and restrained on the outer surface of the grip body. Therefore, the protruding piece does not fall down significantly, and maintains a high restoring force and elasticity. With this configuration, the durability can be improved.

The invention according to claim 2 is characterized in that the number of the groups described in claim 1 is three or less.

[0007] The invention described in claim 3 is claim 1 or 2.
When each protruding piece of each group described is extended in the circumferential direction, and each group is divided into two parts in the grip axis direction and divided into a front part and a rear part, an average of the protruding pieces of the front part is obtained. Large circumferential dimension,
It is characterized in that it is set to be larger than the average circumferential dimension of the projecting piece at the rear. Since the gripping part where the user makes direct contact with the finger tends to concentrate on the front part of the group, the circumferential dimension of the protruding piece part at the front part is made larger than that of the rear part, Preferably, the part can be bent greatly.

[0008] The invention described in claim 4 is the first to third aspects of the present invention.
When each group described in any one of the above is bisected in the grip axis direction and divided into a front part and a rear part, the average height of the protruding piece part of the front part is determined by the projection of the rear part. It is characterized in that it is set to be larger than the average height of the piece. Since the gripping part where the user makes direct contact with the finger tends to concentrate on the front part of the group, the height of the protruding piece part at the front part is made larger than that of the rear part, so that the grip part Should be able to bend greatly.

[0009] The invention according to claim 5 is the invention according to claims 1 to 4.
And a part of the grip body surrounding the group and the remaining part of the grip body are integrally formed by two-color molding. Do it. The design of the writing instrument grip can be changed by the two-color molding.

According to a sixth aspect of the present invention, there is provided a writing shaft, wherein the writing implement grip according to any one of the first to fifth aspects and a writing shaft made of an inelastic material are integrally formed by two-color molding. It becomes. By forming the writing implement grip and the writing shaft in two colors, the trouble of attaching the writing implement grip to the writing shaft can be omitted, and the design of the writing shaft can be changed. According to a seventh aspect of the present invention, the grip body according to any one of the first to sixth aspects extends rearward to an inter-finger support portion that supports between fingers, and the grip body is supported by the inter-finger support portion with a supporting force. It is characterized by providing a group consisting of a plurality of bendable projecting pieces projecting in the outer diameter direction. The cushioning property of the inter-finger support can also be improved.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 to FIG. 5 are views showing a first embodiment of the present invention. In the figure, reference numeral 10 denotes a writing instrument grip, and the grip 10 is attached to a separate writing shaft 20. The grip 10 is made of an elastic material, and specifically, can be made of a material such as synthetic rubber, silicone rubber, and thermoplastic elastomer. The grip 10 has a substantially cylindrical grip body 12 serving as a base thereof.
The outer surface 12a of the grip body 12 has a plurality of radially protruding projecting pieces 14 as a group 1.
6 are provided in the circumferential direction of the grip main body 12 so as to be separated from each other. This group 16 is spaced apart at equal intervals in the circumferential direction.
Three of them are formed at intervals of 20 degrees, and correspond to three fingers of thumb, forefinger, and middle finger, which are often used for normal gripping. However, the number of the groups 16 is not limited to three, but may be two, and in some cases, only one. In addition, the number of protrusions may be four or more. However, when each protruding piece 14 extends in the circumferential direction as in this embodiment, it is necessary to make the circumferential dimension of each protruding piece 14 sufficient. Is preferably not divided into too many groups, and three or less are appropriate.

Each of the protruding pieces 14 extends in the circumferential direction, and as shown in FIGS. 3 and 4, when viewed along a cross section parallel to the protruding pieces 14, the protruding pieces 14 are formed. The contour of the outer surface 12a of the grip body 12 that is not formed is an arc shape, and when the contours of the discrete outer surfaces 12a are extended and connected to each other, an extension line C that forms a circular contour together with the contour of the outer surface 12a. Is formed. Each protruding piece 14 has the same height as the extension line C. Since the protruding pieces 14 do not protrude in the outer diameter direction from the extension line C in this manner, both ends of each protruding piece 14 extend over the entire height direction (that is, radial direction) of the grip body 12. Completely fixed and restrained on the outer surface. In addition, even at the center of the protruding piece 14, the protruding piece 14 does not protrude beyond the extension line C in the radial direction, so that it cannot fall down greatly, and therefore has a high elasticity. Holding power.

Further, since both ends of each projecting piece 14 are restrained by the clip body 12, if the circumferential dimension of the projecting piece 14 is small, the center of the projecting piece 14 in the circumferential direction is reduced. The amount of bending is limited to a small amount. Conversely, if the circumferential dimension of the projecting piece 14 is large, the circumferential center of the projecting piece 14 can be greatly bent. In the present embodiment, when each group 16 is bisected in the axial direction and divided into a front part 16A and a rear part 16B, the average circumferential dimension of the projecting piece 14 of the front part 16A is equal to the rear part 16B. Is set so as to be larger or equal toward the front so as to be larger than the average circumferential dimension of the protruding piece portion 14, and the protruding piece portion 14 at the tip thereof has the maximum circumferential size. I have it.

Similarly, since the root of each projecting piece 14 is restrained by the clip body 12, if the height of the projecting piece 14 is low, the amount of bending of the projecting piece 14 is limited to a small value. Conversely, if the height of the projecting piece 14 is high, the displacement of the tip of the projecting piece 14 increases. In the present embodiment, each group 16
Of the plurality of projecting pieces 14 constituting the front part 16A
So that the average height of the protruding piece 14 of the rear part 16B is larger than the average height of the protruding piece 14 of the rear part 16B, so that the height becomes larger or equal toward the front. Once set, the protruding piece 14 at the tip has the maximum height.

By setting the circumferential dimension and height as described above, the protruding piece 14 at the front portion 16A is set to bend more than the protruding piece 14 at the rear.

As shown in FIG. 5, the writing tool grip 10 is fitted around the writing shaft 20 to form a writing shaft 22 together with the writing shaft 20. Note that the writing shaft 20 can be formed of one member, or can be formed of a plurality of members such as a front shaft and a rear shaft.

As shown in FIG. 6, the user can write on the writing shaft 22.
When the writing instrument grip 10 is grasped with a finger, the projecting piece 14 is bent by the grasping force. Although there are individual differences, the gripping parts with which the user makes direct contact with the fingers are group 16
Among them, there is a tendency to concentrate on the front part 16A in the axial direction,
Since the protruding piece 14 of the front portion 16A is set to be able to bend more than the protruding piece 14 of the rear portion 16B, a sufficient cushion effect is obtained, and a sufficient anti-slip property is obtained. The effect is obtained. Each projecting piece 14 of each group 16
Of the projecting pieces 14 that directly contact the finger and the surrounding projecting pieces 14 that are successively bent by the bending of the projecting pieces 14 within the same group 16. Occurs mainly in the center. On the other hand, each projecting piece 1
Since both end portions of 4 are restrained by the grip body 12, their deformation is small, and a high restoring force acts on each protruding piece portion 14. Therefore, it does not give the user a feeling that is too soft, has an appropriate hardness, and can reduce the fatigue of the user even after writing for a long time.

When the user releases his / her hand from the writing shaft 22 and releases the gripping force, the protruding piece portion 14 immediately returns to its original upright state due to its high elasticity. This projecting piece 14
In such a case, since a high restoring force can be maintained structurally, the durability can be improved.

Next, FIG. 7 to FIG. 9 are views showing a second embodiment of the present invention. In the writing instrument grip 10-2 of this embodiment, each protruding piece portion 14 of each group 16-2 is provided.
-2 is different in that the circumferential dimension of -2 is largest at a portion slightly behind the tip, and in other respects,
This is the same as the first embodiment. This largest portion corresponds to the portion that is held by the majority of people. However, also in this embodiment, the group 16-2 is set to 2 in the axial direction.
When equally divided and divided into the front part 16A and the rear part 16B, the average circumferential dimension of the protrusion part 14-2 of the front part 16A is the average of the protrusion part 14-2 of the rear part 16B. And the average height of the projecting piece 14-2 of the front portion 16A is greater than the average height of the projecting piece 14-2 of the rear portion 16B. The increase is the same as in the first embodiment. Therefore, a sufficient cushion effect can be provided by making the circumferential dimension of this portion the largest and making it easy to bend, and the same effect as in the first embodiment can be obtained.

FIGS. 10 and 11 are views showing a third embodiment, in which a writing instrument grip 10-3 is provided with a writing shaft 22.
2 shows a state where the camera is mounted on the camera. In this writing instrument grip 10-3, a plurality of projecting pieces 14- protruding in the radial direction are provided.
The two groups 16-3 each of which is separated from each other in the circumferential direction of the grip body 12-3 are provided. When viewed along a section parallel to the protruding piece 14-3, the contour of the outer surfaces 12-3a of the grip body 12-3 on which the protruding piece 14-3 is not formed is extended and connected to each other. , An extension line C-3 which forms an oval contour together with the outer surface 12-3a is formed.
Each protruding piece portion 14-3 has the same height as the extension line C-3, and does not protrude from the extension line C-3 in the outer diameter direction. Therefore, the same operation and effect as in the first embodiment. Is obtained.

As described above, the contour formed by the grip body having no protruding piece and the extension line thereof is not limited to a circular contour, but may be any shape. Figure 1
2 and FIG. 13 show examples other than the circular contour.
It is the sectional view seen along the section parallel to the projection piece part showing a 5th embodiment.

The grip 10-4 for a writing instrument of the example of FIG.
Is provided with three groups 16-4 of a plurality of radially projecting projecting pieces 14-4 spaced apart in the circumferential direction of the grip body 12-4. When the outer surfaces of the grip body 12-4 where no is formed are extended and connected to each other, an extension line C-4 that forms a substantially triangular outline with the outer surface is formed. Each protruding piece portion 14-4 has the same height as the extension line C-4. This group 16-
The circumferential dimension and height of each protruding piece 14-4 of the first
As in the embodiment, the front part of each group 16-4 may have a larger circumferential dimension or a larger height than the rear part.

The writing instrument grip 10-5 of the example of FIG.
Is provided with two groups 16-5 of a plurality of projecting pieces 14-5 projecting in the radial direction, separated from each other in the circumferential direction of the grip body 12-5. When the outer surfaces of the grip body 12-5 where no is formed are extended and connected to each other, an extension line C-5 that forms a substantially elliptical contour together with the outer surface is formed. Each protruding piece portion 14-5 has the same height as the extension line C-5. This group 16-5
As to the first embodiment, the circumferential dimension and height of each protruding piece 14-5 are larger or higher in the front part of each group 16-5 than in the rear part. May be larger.

FIG. 14 is a diagram showing a sixth embodiment. In the illustrated writing instrument grip 10-6, each group 16-6 including a plurality of projecting pieces 14-6 is included.
Enclosure part 12- of grip body 12-6 surrounding 6-6
6b and the remaining portion 12-6c of the grip body 12-6
Are different from the first embodiment (or the second to fifth embodiments) in that they are integrally formed by two-color molding. In other respects, the first embodiment (or the second to fifth embodiments) This is the same as in the embodiment. The protruding piece 14-6 and the surrounding portion 12-6b of the grip body 12-6 are made of an elastic material such as synthetic rubber, silicone rubber, or thermoplastic elastomer, while the remaining portion 12-6c is the same. It may be made of an elastic material, or may be made of a material other than an elastic material. Surrounding portion 12-6b of projecting piece portion 14-6 and grip body 12-6 and remaining portion 12-6
Instead of using the same material as c, materials having different colors may be used, and the design can be improved.

FIG. 15 is a view showing another embodiment of a writing shaft provided with a writing instrument grip. In this embodiment, the writing implement grips 10 to 10 described in the first to sixth embodiments are used.
10-6 and a writing shaft 20 made of an inelastic material
-7 is integrally molded by two-color molding to form a writing shaft. In the illustrated example, a writing instrument grip 10-7 similar to that of the second embodiment and a writing shaft 2 made of an inelastic material are used.
0-7 are integrally formed by two-color molding. However,
The grip body 12-7 of the writing instrument grip 10-7 is extended to the rear, and a plurality of protrusions projecting from the grip body 12-7 in the outer diameter direction to the inter-finger support portion that supports between the thumb and the index finger. There is provided a group 16-7 consisting of one part 14-7. The protruding piece 14-7 is bendable by the supporting force between the fingers. As a result, not only the cushion effect is given to the fingertip but also the cushion effect is given to the space between the fingers, so that the user can be given a better feeling.

The projecting piece 14-7 is connected to the other projecting piece 1
Similarly to 4-1 to 14-6, as shown in FIG. 16, the height from the circular contour C-7 which is an extension of the contour of the outer surface of the grip main body where the grip portion is not formed, in the outer radial direction. Is set so that it does not protrude. As a result, the projecting piece 14-7 has high restoring force and high durability.

In the above example, the example in which the projecting piece portion extends in the circumferential direction has been described. However, the present invention is not limited to this example, and the projecting piece portion may be extended in the axial direction. Also in this case, it is set so as not to protrude in the outer radial direction from an extension of the contour of the outer surface of the grip body where the protruding piece is not formed, and both ends of the protruding piece, that is, the front end and the rear end. However, by completely fixing and restraining the outer surface of the grip body along the length direction (radial direction), the same operation and effect as in the above-described example can be provided.

[0029]

As described above, according to the present invention,
A moderate cushioning effect can be given to a user holding the writing shaft, and a projecting piece projecting in the outer diameter direction for giving the cushioning effect holds a high restoring force,
Can have high durability.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view illustrating a first embodiment of a writing instrument grip of the present invention.

FIG. 2 is a plan view of the first embodiment.

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

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

FIG. 5 shows a writing instrument grip according to the first embodiment.
FIG. 4 is a plan view illustrating a state in which No. 2 is mounted.

FIG. 6 is a cross-sectional view illustrating a use state of the writing instrument grip of the first embodiment.

FIG. 7 is a longitudinal sectional view showing a second embodiment of the writing instrument grip of the present invention.

FIG. 8 is a plan view of the second embodiment.

FIG. 9 is a view of FIG. 8 in a state of being rotated by 30 degrees about its axis.

FIG. 10 is a side view illustrating a writing instrument grip according to a third embodiment of the present invention.

11 is a sectional view taken along line 11-11 of FIG. 10;

FIG. 12 is a sectional view of a grip for a writing instrument according to a fourth embodiment of the present invention, taken along a section parallel to a protruding piece.

FIG. 13 is a cross-sectional view of a grip for a writing instrument according to a fifth embodiment of the present invention, taken along a cross section parallel to a protruding piece.

FIG. 14 is a longitudinal sectional view showing a sixth embodiment of the writing instrument grip of the present invention.

FIG. 15 is a side view showing an embodiment of a writing shaft provided with a writing instrument grip of the present invention.

16 is a sectional view taken along line 16-16 in FIG.

[Explanation of symbols]

10, 10-2, 10-3, 10-4, 10-5, 10
-6,10-7 Writing instrument grips 12,12-2,12-3,12-4,12-5,12
-6,12-7 Grip body 14,14-2,14-3,14-4,14-5,14
-6,14-7 Projection piece 16,16-2,16-3,16-4,16-5,16
-6, 16-7 group 16A front part 16B rear part C, C-2, C-3, C-4, C-5, C-6, C-7
Extension line (contour) 12a Outer surface 12-6b Surrounding part 20-7 Writing axis

Claims (7)

[Claims] 1. A grip for a writing instrument, comprising a group of a plurality of projecting pieces projecting in the outer diameter direction that can be bent by a gripping force on an outer surface of the grip body, and spaced apart in a circumferential direction of the grip body. The height of each protruding portion is determined by looking at the cross section parallel to each protruding portion of each group, and the contour of the outer surface of the grip body on which the protruding portion is not formed. A grip for a writing instrument, which is set so as not to protrude in an outer diameter direction from an extension line. 2. The writing instrument grip according to claim 1, wherein the number of the groups is three or less. 3. The projecting piece portion of the front portion when each projecting piece portion of each group is extended in the circumferential direction and each group is divided into two parts in the grip axis direction and divided into a front portion and a rear portion. 3. The average circumferential dimension of the rear projection is set larger than the average circumferential dimension of the rear projecting piece.
A writing instrument grip as described. 4. When each group is divided into two parts in the grip axial direction and divided into a front part and a rear part, the average height of the front part is set to be equal to the rear part. Than the average height of
The grip for a writing instrument according to any one of claims 1 to 3, wherein the grip is set large. 5. A method according to claim 1, wherein each of the plurality of projecting pieces includes a group, and a part of the grip body surrounding the group and a remaining part of the grip body are integrally formed by two-color molding. The grip for a writing instrument according to any one of claims 1 to 4. 6. A writing shaft formed by integrally forming the writing instrument grip according to claim 1 and a writing shaft made of an inelastic material by two-color molding. 7. The grip body is extended rearward to an inter-finger support portion that supports between fingers, and a plurality of projecting pieces protruding in the outer diameter direction that can be bent by the support force on the inter-finger support portion. The writing instrument grip according to any one of claims 1 to 6, further comprising a group of: