JP2018069567A - Writing instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a writing instrument that comprises a holding part not only having a high-quality image imparted by a hard exterior part and elasticity imparted by an elastic body but also improving a fit for fingers.SOLUTION: A writing instrument 1 comprises a holding part 20 that has a hard barrel 50 having a plurality of groove parts 51 formed in a radial direction B centering on an axis X of the writing instrument, hard piece members 56 and 57 arranged in the groove parts 51, respectively, and an elastic body 24 arranged between a bottom surface of the groove part 51 and bottom surfaces of the piece members 56 and 57 and enabling movement of the piece members 56 and 57 in the radial direction B of the writing instrument.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a writing instrument characterized by a gripping portion.

  Conventionally, high-quality gripping parts of writing instruments have been known to be decorated with high-quality materials, lacquer, sculpture, and the like, but have not been given the functionality of ease of gripping and fatigue. For this reason, for example, Patent Document 1 discloses a writing instrument having a grip portion adapted to various ways of gripping by the user, although the outer surface is formed of a non-rubber hard material such as metal.

Japanese Patent Laid-Open No. 2006-020074

  In the writing instrument described in Patent Document 1, a hard ring-shaped member is arranged on the outer periphery of the shaft tube constituting the grip portion, and an elastic member is provided between the shaft tube and the ring-shaped member, so that the finger shape is obtained. One end of the ring-shaped member moves inward in the radial direction so that the gripping portion is deformed. However, since the other end of the ring-shaped member protrudes outward in the radial direction, the grip portion does not necessarily fit the finger.

  Therefore, an object of the present invention is to provide a writing instrument having a grip portion that not only has a high-class feeling due to a hard exterior portion and elasticity due to an elastic body, but also has an improved fit to a finger.

In order to achieve the above-described object, according to the first aspect of the present invention, there is provided a writing instrument characterized by a gripping part, wherein a hard shaft cylinder is formed with a plurality of grooves in the radial direction about the axis of the writing instrument. And a hard piece member disposed in each of the groove portions, and an elastic body that is disposed between the bottom surface of the groove portion and the bottom surface of the piece member and enables movement of the piece member in the radial direction of the writing instrument. A writing instrument is provided that includes a gripping portion.
According to a second aspect of the present invention, there is provided the writing instrument according to the first aspect, wherein a plurality of piece members are arranged in series in the axial direction in the groove portion.
According to the 3rd aspect of this invention, the writing instrument which has a recessed part in at least one of the bottom face of a groove part and the bottom face of a piece member in the 1st or 2nd aspect is provided.
According to the fourth aspect of the present invention, in any one of the first to third aspects, the groove portion is formed on the outer side of the axial tube in the radial direction of the writing instrument, and the inside of the narrow portion. A wide portion adjacent to the side, and the piece member has a leg portion disposed in the narrow portion, and a retaining portion extending from the leg portion and disposed in the wide portion. A writing instrument is provided.

  ADVANTAGE OF THE INVENTION According to this invention, it can provide a writing instrument provided with the holding part which not only has the high-class feeling by a hard exterior part, and the elasticity by an elastic body but improved the feeling of fitting to a finger.

It is a side view of the writing instrument in the 1st Embodiment of this invention. It is a longitudinal cross-sectional view of the writing instrument in the 1st Embodiment of this invention. It is a perspective view of the axial cylinder (gripping axis | shaft) in the 1st Embodiment of this invention. It is a perspective view of the piece member with which the axial cylinder in the 1st Embodiment of this invention is mounted | worn. It is a perspective view of the piece member with which the axial cylinder in the 1st Embodiment of this invention is mounted | worn. It is a perspective view of the elastic body arrange | positioned at the axial cylinder in the 1st Embodiment of this invention. It is a perspective view of the holding part in the 1st Embodiment of the present invention. It is a cross-sectional view of the grip part along line VII-VII of FIG. It is a perspective view of the piece member in the 2nd Embodiment of this invention. It is a side view of the holding part in the 2nd Embodiment of this invention. FIG. 9B is a cross-sectional view of the grip portion along line IX-IX in FIG. 9A. It is a perspective view of the piece member and elastic body in the 3rd Embodiment of this invention. It is a perspective view of the holding part in the 3rd Embodiment of this invention. It is a cross-sectional view of the grip part along line XII-XII of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In each drawing, the same code | symbol is provided to the same component. In addition, the content described below does not limit the technical scope of the invention described in the claims and the meaning of terms.

  FIG. 1 is a side view of a writing instrument 1 according to the first embodiment. In the present embodiment, a knock-type mechanical pencil will be described as an example of the writing instrument 1, but it should be noted that the present invention is not limited to a mechanical pencil and can be applied to a ballpoint pen or other pens. In the present specification, the front end side of the writing instrument in the axial direction A is defined as “front”, the rear end side of the writing instrument is defined as “rear”, and the outer side of the writing instrument in the radial direction B is defined as “outer”. The inside of the writing instrument is defined as “inside”.

  First, the overall configuration of the writing instrument 1 will be outlined. As shown in FIG. 1, the writing instrument 1 generally includes a writing unit 10 that sends out a lead and enables writing, a holding unit 20 that is held by a finger, and a shaft unit 30 that is positioned behind the holding unit 20. And an operation unit 40 for performing a centering operation.

  FIG. 2 is a longitudinal sectional view of the writing instrument 1 according to the first embodiment. The writing unit 10 includes a guide pipe 11 that protects the core, a base 12 that covers the tip of the writing instrument 1, a center stopper 13 that is disposed behind the guide pipe 11 to prevent center return, and a core stopper 13. A lead chuck 14 that feeds the lead, a spring 15 that enables the lead chuck 14 to move in the axial direction A, a lead guide 16 that sends the lead one by one to the lead chuck 14, and a lead A lead tank 17 which is disposed behind the guide 16 and stores the lead.

  The grip portion 20 includes a front shaft 21 that is screwed into the base 12, a grip shaft 22 that covers the outside of the front shaft 21 in the radial direction B, a plurality of piece members 56 and 57 that are attached to the grip shaft 22, and a grip shaft 22 and the elastic body 24 disposed between the piece members 56 and 57.

  The shaft portion 30 includes a shaft ornament 31 positioned behind the gripping shaft 22, a shaft ornament receiving portion 32 that receives the shaft ornament 31, a shaft coupling 33 that is fixed to the rear end portion of the front shaft 21, and a shaft coupling 33. And a rear shaft 34 that is positioned outside the rear shaft 34 in the radial direction B and has a clip 35.

  The operating portion 40 is engaged with a protrusion 38 formed on the inner surface of the rear shaft 34 and receives a rear end of the core tank 17. The operation portion 40 is screwed into the rear end of the rear shaft 34 to connect the knock portion 41. A locking ring 42 that locks, a spring 43 that enables movement of the knock portion 41 in the axial direction A, an eraser 44 that is inserted into the recess of the knock portion 41, and a knock cover 45 that covers the eraser 44. .

  In this specification, an axis including the front shaft 21, the gripping shaft 22, the rear shaft 34, and the outer shaft 36 is referred to as a “shaft tube 50”. In another embodiment, the front shaft 21, the grip shaft 22, the rear shaft 34, and the outer shaft 36 may be integrally formed. In this case, the shaft tube 50 is formed as a single body.

  Then, the structure of the holding part 20 which is the characteristic part of this invention is demonstrated in detail. 3-5 shows the structural member of the holding part 20. FIG. FIG. 3 is a perspective view of the shaft tube 50 (gripping shaft 22). The shaft tube 50 is made of a hard material including a metal such as aluminum, non-rubber plastic (excluding elastic materials such as rubber and elastomer), wood, glass, jewelry, etc., and is used for extrusion molding, injection molding, cutting, etc. It is formed by. The shaft cylinder 50 has a coating formed by a sprayer or vacuum deposition, and is colored or glossed.

  Six groove portions 51 are formed in the radial direction B around the axis X on the outer surface of the shaft tube 50. The groove portions 51 extend linearly along the axial direction A, and are arranged at equal intervals in the circumferential direction C. In another embodiment, five groove portions 51 may be formed along the axial direction A corresponding to the piece members 56 and 57.

  In the radial direction B, the groove portion 51 has a narrow portion 52 formed on the outer side of the shaft tube 50 and a wide portion 53 provided adjacent to the inner side of the narrow portion 52. The narrow portion 52 prevents the piece members 56 and 57 from coming out of the shaft tube 50 outward in the radial direction B. The wide portion 53 limits the movement range of the piece members 56 and 57 in the radial direction B. A recess 55 for receiving the elastic body 24 is formed on the bottom surface 54 of the groove 51. The recess 55 substantially fixes the position of the elastic body 24 in the groove 51.

  4A and 4B are perspective views of the piece members 56 and 57 attached to the shaft tube 50. FIG. The piece members 56 and 57 are made of a hard material including a metal such as aluminum, non-rubber plastic (excluding elastic materials such as rubber and elastomer), wood, glass, jewelry, etc. Alternatively, it is formed by cutting or the like. A high-quality feeling is imparted to the writing instrument 1 by forming the shaft tube 50 and the piece members 56 and 57 constituting the exterior portion of the grip portion 20 from a hard material. The hard material used for the piece members 56 and 57 may be the same as or different from the hard material used for the shaft tube 50. The piece members 56 and 57 have a film formed by a sprayer or vacuum vapor deposition, and are colored or glossy.

  One piece member 56 is arranged on the front end side of the writing instrument in the groove 51 shown in FIG. 3, whereas four piece members 57 are arranged behind the piece member 56. The piece member 56 has an inclined surface 60 so as to exhibit a continuous shape to the tapered base 12 shown in FIG. In another embodiment, the piece member 56 does not have the inclined surface 60 and may have the same shape as the piece member 57. The piece members 56 and 57 are provided with a leg portion 58 arranged in the narrow portion 52 of the groove portion 51 shown in FIG. 3 and a retaining portion extending from the leg portion 58 to both sides and arranged in the wide portion 53 of the groove portion 51. Part 59.

  A recess 62 for receiving the elastic body 24 is formed on the bottom surface 61 of the piece members 56 and 57. The recess 62 substantially fixes the position of the elastic body 24 in the groove 51 shown in FIG. In another embodiment, the piece members 56 and 57 do not have the recess 62, while the groove 51 may have the recess 55. Instead, the piece members 56 and 57 may have the recess 62, while the groove 51 may not have the recess 55. In other words, when at least one of the piece members 56 and 57 and the groove 51 has a recess, the position of the elastic body 24 in the groove 51 can be substantially fixed.

  FIG. 5 is a perspective view of the elastic body 24 disposed in the shaft tube 50. The elastic body 24 is formed using a soft material having elasticity such as rubber or elastomer, and allows the piece members 56 and 57 to move in the radial direction B. In another embodiment, the elastic body 24 may be a spring or the like that springs in the radial direction B. The elastic body 24 has a rectangular parallelepiped shape extending along the axial direction A. Instead, the elastic body 24 may have a cylindrical shape extending along the axial direction A. Each of the elastic bodies 24 may be colored with a single color, or may be color-coded with a plurality of colors so that the user's interest is interesting.

  FIG. 6 is a perspective view of the grip 20 in the present embodiment. Although the holding part 20 is not limited, first, the elastic body 24 is inserted into the groove part 51 of the shaft tube 50, and then the piece members 56 and 57 are inserted into the groove part 51 so as to cover the elastic body 24. It is assembled by. The elastic body 24 and the piece members 56 and 57 are disposed in each of the groove portions 51. In each of the groove portions 51, a total of five piece members including one piece member 56 and four piece members 57 are arranged in series in the axial direction A. Of the five piece members 56 and 57 arranged in series in the axial direction A, only the piece member that contacts the finger is urged inward in the radial direction B, so that the deformation of the grip portion 20 is minimized. And the fit to the finger is improved.

  In another embodiment, the five piece members 56 and 57 arranged in series in the axial direction A may be integrally formed by being connected by a hinge or the like. Since the piece members 56 and 57 are integrally formed, the manufacturing cost is reduced, and the piece members 56 and 57 can be easily assembled into the groove 51.

  FIG. 7 is a cross-sectional view of the grip 20 along the line VII-VII in FIG. The elastic body 24 is disposed between the bottom surface 54 of the groove 51 and the bottom surface 61 of the piece member 57. The elastic body 24 enables movement of the piece member 57 in the radial direction B, the piece member 57 is urged inward in the radial direction B in response to the pressure by the finger, and the piece member 57 in the radial direction in response to the release of the finger. Restore outside B. Of the six piece members 57 arranged at equal intervals in the circumferential direction C, only the piece member that contacts the finger is biased inward in the radial direction B, so that the deformation of the gripping portion 20 is minimized. , The fit to the finger is further improved.

  Next, with reference to FIG.8 and FIG.9, the writing instrument in 2nd Embodiment is demonstrated. The overall configuration of the writing instrument in the second embodiment is the same as the overall configuration of the writing instrument 1 in the first embodiment, and thus the description thereof is omitted. The gripping part of the writing instrument in the second embodiment differs from the configuration of the gripping part 20 of the writing instrument 1 in the first embodiment in that the shape of the piece member 71 is different.

  FIG. 8 is a perspective view of the piece member 71 in the second embodiment. The piece member 71 includes not only the leg portion 72 and the retaining portion 73 but also an armor portion 74 extending from the leg portion 72 to both sides.

  FIG. 9A is a side view of the gripping portion 70 in the second embodiment. As in the first embodiment, the gripping portion 70 has five piece members 71 in series in the axial direction A. The armor portion 74 of the piece member 71 is dimensioned so as to generally constitute the entire outer surface of the grip portion 70.

  FIG. 9B is a cross-sectional view of the gripper 70 along line IX-IX in FIG. 9A. The gripping portion 70 has six piece members 71 with a gap 75 in the circumferential direction C. The gap 75 is dimensioned as play that does not come into contact when two adjacent piece members 71 are pressed inward in the radial direction B. Similarly to the first embodiment, the leg portion 72 of the piece member 71 is disposed in the narrow portion 77 of the shaft tube 76, while the retaining portion 73 of the piece member 71 is disposed in the wide portion 78 of the shaft tube 76. Is done. The armor portion 74 of the piece member 71 covers the entire outer surface of the shaft cylinder 76, although the gap 75 is separated from the armor portion 74 of the piece member 71 adjacent in the circumferential direction C. Thereby, since a finger always contacts one of the piece members 71, the feeling of fitting to the finger is further improved.

  Next, the writing instrument in the third embodiment will be described with reference to FIGS. The overall configuration of the writing instrument in the third embodiment is the same as the overall configuration of the writing instrument 1 in the first embodiment, and thus description thereof is omitted. The gripping part of the writing instrument in the third embodiment differs from the configuration of the gripping part 20 in the first embodiment in that an elastic body 82 is integrated with the piece member 81.

  FIG. 10 is a perspective view of the piece member 81 and the elastic body 82 in the third embodiment. The piece member 81 and the elastic body 82 are integrated by a double mold (two-color molding or different material molding) or an adhesive, and the elastic body 82 is fixed to the bottom surface 83 of the piece member 81. Thereby, it becomes easy to incorporate the piece member 81 and the elastic body 82 into the shaft tube. It is preferable that the piece member 81 and the elastic body 82 are colored with different colors so that the user's interest is interesting. The length of the elastic body 82 in the axial direction A is substantially the same as the piece member 81 or shorter than the piece member 81. Thereby, the several piece member 81 can be arrange | positioned in series without a gap in the groove part of a shaft cylinder. The piece member 81 includes a leg portion 84 that is pressed by a finger, and a retaining portion 85 that extends from the leg portion 84 to both sides.

  FIG. 11 is a perspective view of the grip 80 in the third embodiment. The gripping portion 80 includes a shaft cylinder 50 having substantially the same shape as that of the first embodiment, and a piece member 81 integrated with the elastic body 82. The gripping portion 80 can be assembled by simply inserting five piece members 81 integrated with the elastic body 82 into each groove portion 51 of the shaft tube 50 in series. In the first embodiment, when the piece member is inserted into the groove portion 51 of the shaft tube 50, the pre-arranged elastic body is easily displaced, but in the third embodiment, the piece member 81 is Since it is integrated with the elastic body 82, it can be easily inserted into the groove 51 of the shaft tube 50. Of the five piece members 81 arranged in series in the axial direction A, only the piece member that comes into contact with the finger is urged inward in the radial direction B, so that the deformation of the gripping portion 80 is minimized. And the fit to the finger is improved.

  FIG. 12 is a cross-sectional view of the grip portion 80 taken along line XII-XII in FIG. Between the bottom surface 54 of the groove 51 and the bottom surface 83 of the piece member 81, an elastic body 82 integrated with the piece member 81 is disposed. Furthermore, since the elastic body 82 is disposed in the recess 55 formed in the bottom surface 54 of the groove 51, the position of the elastic body 82 in the groove 51 is generally fixed. The elastic body 82 enables the piece member 81 to move in the radial direction B, the piece member 81 is urged inward in the radial direction B in response to the pressure by the finger, and the piece member 81 has a diameter in response to the release of the finger. Restore outward in direction B. Of the six piece members 81 arranged at equal intervals in the circumferential direction C, only the piece member that contacts the finger is biased inward in the radial direction B, so that the deformation of the gripping portion 80 is minimized. , The fit to the finger is further improved.

  Although various embodiments have been described herein, the present invention is not limited to the various embodiments described above, and various modifications can be made within the scope described in the following claims. I want to be recognized.

1 Writing implement 20, 70, 80 Grasping part 24, 82 Elastic body 50, 76 Shaft cylinder 51 Groove part 52, 77 Narrow part 53, 78 Wide part 55, 62 Recessed part 56, 57, 71, 81 Frame member 58, 72 Leg parts 59, 73 Stopping part A Axial direction B Radial direction X Axis

Claims (4)

  A writing instrument characterized by a gripping part, wherein a hard shaft cylinder having a plurality of grooves formed in a radial direction around the axis of the writing instrument, a hard piece member disposed in each of the groove parts, and the groove part A writing instrument comprising: a gripping part that is disposed between a bottom surface of the piece member and a bottom surface of the piece member and has an elastic body that enables movement of the piece member in a radial direction of the writing tool.   The writing instrument according to claim 1, wherein a plurality of the piece members are arranged in series in the axial direction in the groove portion.   The writing instrument according to claim 1 or 2, further comprising a recess in at least one of a bottom surface of the groove and a bottom surface of the piece member.   In the radial direction of the writing instrument, the groove has a narrow part formed on the outer side of the shaft tube, and a wide part adjacent to the inner side of the narrow part, and the piece member is The writing instrument according to any one of claims 1 to 3, further comprising: a leg portion disposed in the narrow portion; and a retaining portion extending from the leg portion and disposed in the wide portion. .

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