JP4544511B2 - Writing instrument grip and writing shaft body with writing instrument grip - Google Patents

Description

  The present invention relates to a writing instrument grip mounted on a shaft cylinder of a writing instrument (including a stylus pen and an eyebrow pen) and a writing shaft body provided with the writing instrument grip, and more particularly to an improvement of the writing instrument grip.

  As shown in FIGS. 11 to 12, the writing instrument 1 formed of a non-elastic material has a fulcrum at the part A between the thumb 20 and the index finger 21, and the tip parts B, C, D is the force point, and the tip E that is in contact with the paper or the like is the action point (this holding method is hereinafter referred to as “three-point standard grip”).

  In this three-point standard grip, when the tip portions B, C, and D of the fingers 20, 21, and 22 are shifted from the initial grip position to the writing shaft tip 1a, the writing tool 1 must be held again. Therefore, fatigue will increase when used for a long time.

In order to cope with this, when a grip body made of an elastic material is attached to the shaft tube 2 of the writing instrument 1 and a force is applied during writing, the gripping position of each finger 20, 21, 22 moves to the tip of the writing shaft, There is also a conventional example (Patent Document 1) having a plurality of plate-like protrusions to be restored when is released.
Japanese Patent No. 3121313

  However, this conventional grip for a writing instrument does not include a rotation direction anti-slip portion and an axial direction anti-slip portion in which the slip in the rotation direction 6 and the slip in the axial direction 5 are different.

  Accordingly, the thumb 20 and the index finger 21 are displaced in the axial direction 5 while the middle finger 22 stops sliding in the axial direction 5 according to the brush stroke, and the thumb 20 and the index finger 21 Cannot stop the middle finger 22 from moving in the rotational direction 6 and returning to the original state while stopping the sliding in the rotational direction 6. Furthermore, the joints of the fingers 20, 21, 22 are also very fatigued, and good writing comfort cannot be obtained.

  The present invention is for solving the above-described problem, and improves the high anti-slip function in the gripped portion, and the positioning between fingers slightly changes according to the stroke of the brush. It is an object of the present invention to provide a writing instrument grip and a writing shaft body provided with a writing instrument grip, in which a gripping sensation can be obtained.

  For this reason, the writing shaft grip having the writing instrument grip and the writing instrument grip according to the present invention is higher in the rotational direction than the axial direction in the circumferential direction of the outer peripheral surface of the grip body in the grip attached to the axial tube of the writing instrument. An anti-slip portion having a non-slip function and an axial anti-slip portion having an anti-slip function higher in the axial direction than the rotational direction are provided, and the axial anti-slip portion is a circumferential direction of the outer peripheral surface. It is characterized by being formed obliquely when viewed from the side.

  The writing instrument grip of the present invention and the writing shaft body provided with the writing instrument grip are configured as described above, so that the thumb and forefinger are positioned while the middle finger stops axial sliding according to the writing operation. Can move both in the axial direction and return to the original position, and while the thumb and index finger stop sliding in the rotational direction, the middle finger can move in the rotational direction and return to the original position. The movement becomes smooth.

  With the above-described configuration and operation, the writing shaft body provided with the writing instrument grip and the writing instrument grip of the present invention has the following effects.

  In order to prevent the fingertip from slipping to the tip of the writing instrument, it is possible to prevent a force from being applied more than necessary and obtain a necessary gripping force with a small force.

  The positioning between the fingers slightly changes according to the brush stroke, and a good grip feeling can be obtained.

  Since both prevention of slipping and a good gripping feeling are compatible, it is less likely to change the writing instrument, and fatigue is reduced even when used for a long time.

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

  The writing instrument grip as Example 1 of the present invention is configured as a right-hand writing instrument as shown in FIGS.

  The grip body 3a for the right hand attached to the shaft cylinder 2 of the writing instrument 1 is formed in a substantially cylindrical shape from an inelastic material such as hard rubber or synthetic resin (hard resin), and is formed on the outer peripheral surface 4a of the grip body 3a. In the circumferential direction, there are a rotational anti-slip portion 7 having a higher anti-slip function in the rotational direction 6 than in the axial direction 5, and an axial anti-slip portion 8 having an anti-slip function in the axial direction 5 higher than the rotational direction 6. Has been placed.

  The rotation direction anti-slip portion 7 includes a thumb anti-slip portion 13 for contacting the thumb 20 and an index finger anti-slip portion 14 for contacting the index finger 21.

  Each of the anti-slip portions 13 and 14 has substantially the same shape, and is constituted by an uneven portion 17 in which a plurality of grooves are formed along the axial direction 5. The thumb 20 and the index finger 21 are in close contact with the projections and depressions, easily slide in the axial direction 5, and have a higher anti-slip function in the rotational direction 6 than in the axial direction 5.

  The axial anti-slip portion 8 is configured as a middle finger anti-slip portion 15 for contacting the middle finger 22 and is formed from one end portion 12a to the other end portion 12b of the grip body 3a, and in the circumferential direction of the outer peripheral surface 4a. Obliquely formed.

That is, the middle finger non-slip portion 15 of the axial slip section 8, while being formed substantially along a first plane 9a of the center line 2a and exchange the difference between the shaft tube 2, the first plane 9a When the center line 2a is viewed from the central portion 8a of the axial anti-slip portion 8 on the outer peripheral surface 4a and formed at a predetermined angle Z from the second plane 10 orthogonal to the center line 2a of the shaft cylinder 2, One plane 9a is formed to form a predetermined angle Z (= 15 °) counterclockwise from the second plane 10.

  The middle finger non-slip portion 15 is constituted by a concavo-convex portion 17 formed with irregularities or grooves along the rotation direction 6, and the middle finger 22 is in close contact with the concavo-convex portions and easily slides in the rotation direction 6. A higher anti-slip function in the axial direction 5 than 6.

  Each of these anti-slip parts 13, 14, 15 is formed so as to form approximately 120 ° in the circumferential direction 6, and between the anti-slip part 13 for the thumb and the anti-slip part 14 for the index finger, An instruction portion 16 that indicates the holding position is formed. The instruction portion 16 has a wide outer peripheral surface 4 a and serves as an index when the writing instrument 1 is held.

  And since the cross-sectional shape of the grip body 3a is the same in the gripping portion P, when the writing instrument 1 is gripped for the first time, even when the position is shifted in the axial direction 5, the same anti-slip effect is obtained. It is done.

  In the first embodiment, when the writing shaft tip 1a of the writing instrument 1 is moved vertically, the thumb 20 and the index finger 21 are displaced in the axial direction 5 while the middle finger 22 stops sliding in the axial direction 5, The joints of the fingers 20, 21, and 22 are not greatly bent. Then, by returning the writing shaft tip 1a of the writing instrument 1 to the original position, the thumb 20 and the index finger 21 are displaced in the axial direction 5 while the middle finger 22 stops slipping in the axial direction 5, and return to the original state.

  When the writing shaft tip 1a of the writing instrument 1 is moved sideways, the middle finger 22 is displaced obliquely in the rotation direction 6 while the thumb 20 and the index finger 21 stop sliding in the rotation direction 6, and each finger The joints 20, 21, and 22 are not greatly bent. Then, by returning the writing shaft tip 1a of the writing instrument 1 to the original position, while the thumb 20 and the index finger 21 stop slipping in the rotation direction 6, the middle finger 22 is shifted obliquely in the rotation direction 6 and returned to its original state.

  Further, when the writing shaft tip 1a of the writing instrument 1 is moved obliquely, the sum of the vectors of the vertical movement and the horizontal movement is obtained.

  In the first embodiment, a necessary gripping force can be obtained with a small force, a good gripping sensation can be obtained, and both prevention of slipping and a good gripping sensation can be achieved. Fatigue is reduced even during use.

  And since the shaft diameter of the gripping portion P is large, there is no fatigue.

  Further, in the grip body 3b as a modified example of the first embodiment, as shown in FIG. 4, a hole 18a penetrating the outer peripheral surface 4a and the inner peripheral surface 4b of the grip body 3b is formed in the recess of the uneven portion 17. It is formed. In this case, it is easy to process the grip body 3b, the coloring of the barrel 2 of the writing instrument 1 is visible, and the appearance is good.

Further, as shown in FIG. 5, the grip body 3c as another modification of the first embodiment is configured as a left / right grip, and a right hand grip is formed at one end portion 12a of the grip body 3c. The plane 9a is formed to make a predetermined angle Z (= 15 °) counterclockwise from the second plane 10. A left-hand grip is formed at the other end 12b of the grip body 3c, and the first plane 9b is formed at a predetermined angle Z (= 15 °) clockwise from the second plane 10. . The inner peripheral surface 4b of the grip body 3c and the outer peripheral surface of the shaft tube 2 are restricted from relative movement in the rotational direction 6 between the grip body 3c and the shaft tube 2 and can be detached from the shaft tube 2 when attached. splines or uneven portions that are formed.

  In this case, the writing instrument 1 can be used for both left and right, and once disassembled, the tip and the base end of the grip body 3c can be exchanged and recombined, so that the right hand and the left hand can be interchanged. is there.

  The writing instrument grip as the second embodiment of the present invention is configured as a right hand writing instrument as shown in FIGS. 6 to 8, and the same reference numerals as those of the writing instrument grip of the first embodiment are the same parts in the figure. Since the same operation is performed, the description thereof is omitted.

  The right-hand grip body 3d attached to the shaft cylinder 2 of the writing instrument 1 is formed in a substantially cylindrical shape from an elastic material such as rubber (NBR, silicon) or synthetic resin (soft resin, elastomer resin), and its outer periphery. A rotation direction anti-slip part 7 and an axial direction anti-slip part 8 are arranged on the surface 4a.

  As the anti-slip portion 13 for the thumb and the anti-slip portion 14 for the index finger which are the anti-slip portions 7 in the rotation direction, a plurality of plate-like protrusions 19 projecting in the radial direction and having the longitudinal direction as the rotation direction 6 are arranged at equal intervals in the axial direction 5. A plurality are formed in parallel. Accordingly, when a force is applied to the plurality of plate-like protrusions 19 during writing, the plate-like protrusions 19 are not easily deformed in the rotational direction 6 and are easily deformed in the axial direction 5. That is, the anti-slip function is higher in the rotational direction 6 than in the axial direction 5. When the force is released, the plurality of plate-like protrusions 19 are restored.

  The axial anti-slip portion 8 is formed as a middle finger anti-slip portion 15 and is formed from one end portion 12a to the other end portion 12b of the grip body 3d, and is formed obliquely when viewed from the circumferential direction of the outer peripheral surface 4a. ing.

  That is, the middle finger anti-slip portion 15 as the axial anti-slip portion 8 is formed substantially along the first plane 9 a intersecting the outer peripheral surface 4 a, and the first plane 9 a is the center of the shaft cylinder 2. The second plane 10 perpendicular to the line 2a forms a plane having a predetermined angle Z and includes the intersection 11 of the center line 2a and the first plane 9a. When the center line 2a is viewed from the central portion 8a, the first plane 9a is formed to make a predetermined angle Z = 15 ° counterclockwise from the second plane 10.

  The middle finger anti-slip portion 15 includes a plurality of plate-like protrusions 19 projecting in the radial direction and having a longitudinal direction W in a direction orthogonal to the first plane 9a. A plurality of lines are formed at equal intervals in a direction orthogonal to the direction W. Therefore, when a force is applied to the plurality of plate-shaped protrusions 19 during writing, the plate-shaped protrusions 19 fall down in the direction orthogonal to the longitudinal direction W, and are deformed more in the rotational direction 6 than in the axial direction 5. That is, it has a higher anti-slip function in the axial direction 5 than in the rotational direction 6. When the force is released, the plurality of plate-like protrusions 19 are restored.

  Further, in the grip body 3e as a modification of the second embodiment, as shown in FIG. 9, the outer peripheral surface 4a and the inner peripheral surface 4b of the grip body 3e are formed in recesses between adjacent ones of the plurality of plate-like protrusions 19. Are formed. In this case, it is easy to process the grip body 3e, the coloring of the barrel 2 of the writing instrument 1 is visible, and the appearance is good.

  In addition, as shown in FIG. 10, the grip body 3f as another modified example of the second embodiment is configured as a left / right grip, and a right hand grip is formed at one end portion 12a of the grip body 3f. The plane 9a is formed to form a predetermined angle Z (= 30 °) counterclockwise from the second plane 10. A left-hand grip is formed at the other end 12b of the grip body 3f, and the first plane 9b is formed at a predetermined angle Z (= 30 °) clockwise from the second plane 10. . In another modification, the right hand grip of the one end portion 12a and the left hand grip of the other end portion 12b as the axial anti-slip portion 8 may be different from each other by a predetermined angle Z, such as a right hand grip or a left hand grip. It may be a simple substance.

  The middle finger anti-slip portion 15 as a right hand grip formed on the one end portion 12a is configured by a plurality of plate-like protrusions 19 protruding in the radial direction and having a longitudinal direction W in a direction perpendicular to the first plane 9a. The middle finger anti-slip portion 15 as the left-hand grip formed on the other end portion 12b protrudes in the radial direction, and includes a plurality of plate-like protrusions 19 having a longitudinal direction X in a direction orthogonal to the first plane 9b. Composed. Splines or concavo-convex portions are formed on the inner peripheral surface 4b of the grip body 3f and the outer peripheral surface of the shaft tube 2 so as to restrict movement of the shaft tube 2 in the rotational direction 6 and to be detachable from the shaft tube 2 when mounted. Is done.

  In this case, the writing instrument 1 can be used for both left and right, and once disassembled and the tip and base ends of the grip body 3f are replaced and recombined, the right hand and the left hand can be interchanged. is there.

  Each of the grip bodies 3a, 3b, 3d, and 3e in the first and second embodiments may be configured to be used for a left hand writing instrument, and the predetermined angle Z is clockwise from the second plane 10. As a result, the groove or the plurality of plate-like protrusions 19 of the uneven portion 17 are formed for the left hand. In this case, the roles of the anti-slip portion 13 for the thumb and the anti-slip portion 14 for the index finger are interchanged.

  Moreover, you may comprise suitably combining the uneven | corrugated | grooved part 17 thru | or the several plate-shaped protrusion 19 of each grip main body 3a, 3b, 3c, 3d, 3e, 3f in Example 1 and Example 2. FIG.

  Further, in the grip bodies 3a, 3b, 3c, 3d, 3e, and 3f, the rotational direction anti-slip portion 7 and the axial direction anti-slip portion 8 may be formed of members made of different materials. That is, one of the rotational direction anti-slip portion 7 and the axial direction anti-slip portion 8 may be formed of an elastic member, and the other may be formed of an inelastic member. In this case, the anti-slip portions 7 and 8 are joined at the joining surface.

  Then, the anti-slip portion 13 for the thumb and the anti-slip portion 14 for the forefinger as the anti-slip portion 7 in the rotational direction, and the anti-slip portion 15 for the middle finger as the axial anti-slip portion 8 are members having different friction coefficients depending on directions. It may be configured.

  The grip bodies 3a, 3b, 3c, 3d, 3e, and 3f may be formed integrally with the writing instrument 1 or may be formed of the same material. Especially used for fountain pens.

  Moreover, the instruction | indication part 16 may be formed in convex shape in the outer peripheral surface 4a, and may be a dot line-shaped recessed part and a triangular shape. In the writing instrument 1 in which the shaft cylinder 2 is provided with a fixed clip, the fixed clip indicates the holding position without providing the instruction section 16 on the writing instrument grips 3a, 3b, 3c, 3d, 3e, and 3f. The writing instrument grips 3 a, 3 b, 3 c, 3 d, 3 e, and 3 f may be arranged on the writing instrument 1 so as to also serve as an instruction unit. In this case, the anti-slip portion 13 for the thumb and the anti-slip portion 14 for the index finger can be integrally formed.

  Further, the predetermined angle Z of the grip bodies 3a, 3b, 3c, 3d, 3e, and 3f in the first and second embodiments may not be 15 ° to 30 °, and the predetermined angle Z may be 1 ° to 44 °. You may form in. Thereby, the sliding direction by the groove | channel of the uneven | corrugated | grooved part 17 thru | or the fall direction of the several plate-shaped protrusion 19 satisfy | fill a wider need.

  In addition, you may form the axial direction anti-slip | skid part 8 along the spiral which makes the centerline 2a of the axial cylinder 2 the centerline. In the writing instrument for the right hand, the spiral is formed along the direction of the right screw from the grip portion P toward the writing shaft tip 1a in the axial direction 5, and the lead angle Y is 1 ° to 44 °. Is formed. In the writing instrument for the left hand, the spiral is formed along the direction of the left screw from the gripping portion P toward the writing shaft tip 1a in the axial direction 5, and the lead angle Y is 1 ° to 44 °. Is formed. Here, the lead angle Y is tan Y = L / where L is the lead (the distance that travels in the axial direction when making a round around the central axis of the spiral along the spiral), and d is the diameter. This is an angle represented by (3.14 × d). Thereby, in each grip main body 3a, 3b, 3c in Example 1, the groove | channel of the uneven | corrugated | grooved part 17 is formed substantially along the middle finger 22, the sliding of the rotation direction 6 of the middle finger 22 improves, and it becomes more writable. Further, in each of the grip bodies 3d, 3e, and 3f in the second embodiment, the lying direction of the plurality of plate-like protrusions 19 is formed substantially along the middle finger 22, and the sliding in the rotation direction 6 of the middle finger 22 is improved. Get better.

The side view which shows the grip main body 3a of Example 1 of this invention II view of FIG. Cross-sectional view of the main part of the grip body 3a (cross-sectional view taken along line III-III in FIG. 1) Sectional drawing which shows the grip main body 3b of the modification of Example 1 corresponding to FIG. The bottom view which shows the grip main body 3c of the other modification of Example 1 corresponding to FIG. Side view showing a grip body 3d according to a second embodiment of the present invention. VII arrow view of FIG. Cross-sectional view of the main part of the grip body 3d Sectional drawing which shows the grip main body 3e of the modification of Example 2 corresponding to FIG. The bottom view which shows the grip main body 3f of the other modification of Example 2 corresponding to FIG. The perspective view which shows the use condition of the conventional writing instrument Front view showing the state of use of a conventional grip body

DESCRIPTION OF SYMBOLS 1 Writing instrument 1a Writing shaft tip 2 Shaft cylinder 2a Shaft cylinder centerline 3a, 3b, 3c, 3d, 3e, 3f Grip main body 4a Outer peripheral surface 4b Inner peripheral surface 5 Axial direction 6 Rotation direction (circumferential direction)
7 Rotational anti-slip part 8 Axial anti-slip part 8a Central part 9a, 9b First plane 10 Second plane 11 Intersection 12a One end part 12b Other end part 13 Anti-slip part for thumb 14 Anti-slip part for index finger 15 Middle finger Non-slip part 16 Indicating part 17 indicating holding position Uneven part 18a, 18b Hole part 19 Plural plate-like protrusions 20 Thumb 21 Index finger 22 Middle finger A The part of thumb and index finger B The tip part of the thumb C The tip part D of the index finger Middle finger tip d Diameter E Tip L in contact with paper, etc. Distance P Gripping part W, X Longitudinal direction Y Lead angle Z Predetermined angle

Claims (15)

  In the grip attached to the shaft cylinder (2) of the writing instrument (1), the circumferential direction of the outer peripheral surface (4a) of the grip body (3a, 3b, 3c, 3d, 3e, 3f) is greater than the axial direction (5). A rotation direction anti-slip part (7) having a higher anti-slip function in the rotation direction (6) and an axial direction anti-slip part (8) having a higher anti-slipping function in the axial direction (5) than the rotation direction (6). ), And the axial slip-preventing portion (8) is formed obliquely when viewed from the circumferential direction of the outer peripheral surface (4a). The axial anti-slip portion (8) is formed at one end (12a) or the other end (12b) of the grip body (3a, 3b, 3c, 3d, 3e, 3f), and the shaft cylinder ( first plane (9a to exchange difference centerline and (2a) of 2), which is formed substantially along the 9b), writing instrument grip according to claim 1.   The first plane (9a) is formed at a predetermined angle (Z) from the second plane (10) perpendicular to the center line (2a) of the shaft cylinder (2), and the outer peripheral surface (4a ), When the central line (2a) is viewed from the central portion (8a) of the axial anti-slip portion (8), the first plane (9a) is counterclockwise from the second plane (10). The grip for a writing instrument according to claim 2, formed so as to form a predetermined angle (Z = 1 ° to 44 °). The first plane (9b) is formed so as to form a predetermined angle (Z) from the second plane (10) orthogonal to the center line (2a) of the shaft cylinder (2), and the outer peripheral surface (4a ), When the center line (2a) is viewed from the central portion (8a) of the axial anti-slip portion (8), the first plane (9b) is predetermined clockwise from the second plane (10). The grip for a writing instrument according to claim 2, wherein the grip is formed so as to form an angle (Z = 1 ° to 44 °).   The axial anti-slip portion (8) is formed at one end (12a) or the other end (12b) of the grip body (3a, 3b, 3c, 3d, 3e, 3f), and the shaft cylinder ( The grip for a writing instrument according to claim 1, formed substantially along a spiral having the center line (2a) of 2) as its center line.   At least one of the spirals is formed along the direction of the right screw from the grip portion (P) toward the writing shaft tip (1a), and the lead angle (Y) forms 1 ° to 44 °. The grip for a writing instrument according to claim 5, formed as described above. At least one of the spirals is formed along the direction of the left screw from the gripping portion (P) toward the writing shaft tip (1a), and the lead angle (Y) forms 1 ° to 44 °. The grip for a writing instrument according to claim 5 , formed as described above. The rotational direction anti-slip part (7) is composed of a thumb anti-slip part (13) for contacting the thumb (20) and an index finger anti-slip part (14) for contacting the index finger (21). The grip for a writing instrument according to any one of claims 2 to 7, wherein the axial anti-slip portion (8) is configured as a middle finger anti-slip portion (15) for contacting the middle finger (22).   A part or all of the anti-slip portion for the thumb (13), the anti-slip portion for the index finger (14), and the anti-slip portion for the middle finger (15) are formed of an uneven portion (17). Grip for writing instruments.   The hole (18a) which penetrates the said outer peripheral surface (4a) and the inner peripheral surface (4b) of the said grip main body (3b) was formed in the recess of the said uneven | corrugated | grooved part (17). Grip for writing instruments.   The grip body (3d, 3e, 3f) is formed of an elastic member, and is one of the anti-slip portion for the thumb (13), the anti-slip portion for the index finger (14), and the anti-slip portion for the middle finger (15). A plurality of plate-like projections (19) whose parts or all protrude in the radial direction of the shaft cylinder (2) and whose longitudinal direction (W, X) is a direction perpendicular to the first plane (9a, 9b). The grip for a writing instrument according to claim 8, further comprising:   A hole (18b) penetrating the outer peripheral surface (4a) and the inner peripheral surface (4b) of the grip body (3e) is formed in a recess between adjacent ones of the plurality of plate-like protrusions (19). The writing instrument grip according to claim 11.   The writing instrument according to any one of claims 8 to 12, wherein an indicating portion (16) indicating a holding position is formed between the anti-slip portion for thumb (13) and the anti-slip portion for index finger (14). Grip.   14. The writing instrument grip (3a, 3b, 3c, 3d, 3e, 3f) according to any one of claims 1 to 13, and the shaft cylinder (2) of the writing instrument (1) made of an inelastic material. A writing shaft with a grip for writing instruments.   The writing instrument grips (3a, 3b, 3c, etc.) so that the clip of the writing instrument (1) also serves as an indicator for indicating the holding position of the writing instrument grips (3a, 3b, 3c, 3d, 3e, 3f). A writing shaft provided with the grip for a writing instrument according to claim 14, which is arranged in 3d, 3e, 3f).

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