Pen holders and writing implements

Abstract

To facilitate attachment of an operation member to a barrel in a pen holder.SOLUTION: A pen holder 30 is a pen holder 30 capable of accommodating a writing member 20 inside, including a barrel 40 having through holes 42a and 42b extending in the radial direction dr, operating members 51, 52 at least partially arranged in the through holes 42a, 42b, and a locking film 60 arranged inside barrel 40. The operating members 51 and 52 are locked by the locking film 60.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a pen holder and a writing implement. [Background technology]

[0002] Conventionally, a pen holder is known that includes a barrel and an operating member such as a button arranged on the barrel (Patent Document 1). This pen holder is configured to be able to accommodate an electronic pen or ballpoint pen refill that has two terminals on its side. When the pen holder accommodates an electronic pen, the operating member comes into contact with the two terminals of the electronic pen when the user presses the operating member. This electrically connects the two terminals via the operating member. Therefore, by detecting that the two terminals are electrically connected, it can be detected that the user has pressed the operating member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2017 / 043214 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional pen holders, the attachment structure of the operating member to the barrel is complicated, which makes it time-consuming to attach the operating member to the barrel. In such pen holders, there is a demand for a simple attachment structure of the operating member to the barrel, so that the operating member can be easily attached to the barrel.

[0005] The present invention has been made in consideration of the above points, and has as its object to make it easier to attach an operating member to a shaft tube in a pen holder. [Means for solving the problem]

[0006] The pen holder according to the present invention comprises: A pen holder capable of accommodating a writing implement therein, a barrel having a through hole extending in a radial direction; an operating member at least a portion of which is disposed within the through hole; A locking film disposed inside the barrel, The operating member is locked to the locking film.

[0007] In the pen holder according to the present invention, the operating member has an inner end portion and a constricted portion located radially outward from the inner end portion, The fastening film may have an opening into which the constricted portion is fastened.

[0008] In the pen holder according to the present invention, The opening is a large diameter portion through which the inner end portion can pass; a small diameter portion through which the inner end portion cannot pass and which can accommodate the constricted portion; and a connecting portion connecting the large diameter portion and the small diameter portion.

[0009] In the pen holder according to the present invention, The locking film may have a plurality of the openings and a slit located between two adjacent openings.

[0010] In the pen holder according to the present invention, The writing instrument may have a positioning portion that limits the circumferential angle of the writing element relative to the barrel.

[0011] The writing instrument according to the present invention comprises: The device comprises the above-mentioned pen holder and a writing element housed inside the pen holder. [Effects of the Invention]

[0012] According to the present invention, it is possible to easily attach the operating member to the barrel of the pen holder. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a diagram showing the appearance of a writing implement equipped with a pen holder according to the present invention. [Figure 2] FIG. 2 is a vertical cross-sectional view showing the writing implement. [Figure 3] FIG. 3 is a side view showing an example of a writing member of a writing implement. [Figure 4] FIG. 4 is a diagram showing the pen holder with the rear shaft removed. [Figure 5] FIG. 5 is an enlarged longitudinal sectional view showing a portion marked with V in FIG. [Figure 6] FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. [Figure 7] FIG. 7 is a diagram showing the locking film of the pen holder. [Figure 8] FIG. 8 is a diagram showing an opening in the locking film. [Figure 9] FIG. 9 is a diagram for explaining a method of assembling the locking film to the operation member. [Figure 10] FIG. 10 is a diagram for explaining a method of assembling the locking film to the operating member. DETAILED DESCRIPTION OF THE INVENTION

[0014] An embodiment of the present invention will now be described with reference to the drawings. In the drawings attached to this specification, the scale and aspect ratios have been appropriately changed and exaggerated from those of the actual objects for the sake of ease of illustration and understanding.

[0015] Furthermore, terms used in this specification that specify shapes, geometric conditions, and their degrees, such as "parallel," "orthogonal," and "identical," as well as values ​​of lengths and angles, are not to be construed as being bound by strict meanings, but rather as including a range within which similar functions can be expected.

[0016] In this specification, the direction in which the central axis A of the writing instrument 10 extends (longitudinal direction, up and down direction in a longitudinal cross section) is referred to as the axial direction da, the direction perpendicular to the axial direction da is referred to as the radial direction dr, and the direction along the circumference around the central axis A is referred to as the circumferential direction dc. Along the axial direction da, the side that comes close to a writing surface such as paper or a touch panel when writing is referred to as the front, and the side that moves away from the writing surface is referred to as the rear. Also, along the radial direction dr, the side that approaches the central axis A is referred to as the inside or inner side, and the side that moves away from the central axis A is referred to as the outside or outer side.

[0017] FIG. 1 is a diagram showing the appearance of a writing instrument 10 equipped with a pen holder 30 according to the present invention, and FIG. 2 is a longitudinal cross-sectional view of the writing instrument 10. The writing instrument 10 includes a writing member 20 and a pen holder 30. The writing instrument 10 extends along a central axis A. The writing member 20 is configured to write on a writing surface such as paper or a touch panel. Examples of writing members 20 that write on paper include members used in ballpoint pens, mechanical pencils, fountain pens, etc. Furthermore, examples of writing members 20 that write on a touch panel include members used in stylus pens.

[0018] First, the writing element 20 housed in the pen holder 30 will be described. FIG. 3 is a side view showing an example of the writing element 20. In this embodiment, the writing element 20 is a element used in a stylus pen. A stylus pen is a writing element that detects the pen tip (tip 25) on a touch panel, determines the position of the pen tip on the touch panel, and creates handwriting on the screen display at a position on the display screen corresponding to the position of the pen tip on the touch panel. The detection method of the touch panel compatible with the stylus pen is not particularly limited. The stylus pen may be compatible with, for example, a pressure-sensitive (resistive film), capacitance, or electromagnetic induction touch panel. The writing element 20 of this embodiment may function as a stylus pen by itself. In other words, the writing element 20 may function as a stylus pen even when detached from the pen holder 30.

[0019] The writing member 20 comprises a main body 21, a tip 25, and a protrusion 27. The main body 21 is a substantially cylindrical member having a central axis extending in the axial direction da, and houses various circuit components and wiring of the stylus pen. The central axis of the main body 21 coincides with the central axis A of the writing instrument 10. The tip 25 is attached to the front end of the main body 21. The tip 25 forms the pen tip of the writing member 20 and is the part that is detected by the touch panel.

[0020] The main body 21 has a first button 22 and a second button 23 on its side. The first button 22 and the second button 23 are arranged at a predetermined interval along the axial direction da. The second button 23 is located rearward of the first button 22 in the axial direction da. The arrangement pattern of the first button 22 and the second button 23 is not limited to this. For example, the first button 22 and the second button 23 may be arranged along the circumferential direction dc. Furthermore, the arrangement is not limited to this, and the main body 21 may have one button, or three or more buttons.

[0021] Both the first button 22 and the second button 23 are configured to be pressed toward the central axis A, i.e., toward the inside in the radial direction dr. The first button 22 and the second button 23 are each provided with a predetermined function. Thus, the predetermined function is performed by pressing each of the buttons 22, 23. For example, the first button 22 may be provided with a handwriting formation function, and the second button 23 may be provided with a handwriting erasure function. In this case, when the tip 25 is moved on the touch panel while pressing the first button 22, handwriting is formed on the display screen along the path of the tip 25. Furthermore, when the tip 25 is moved on the touch panel while pressing the second button 23, handwriting formed on the display screen along the path of the tip 25 is erased. Note that the functions provided to the first button 22 and the second button 23 are not limited to these.

[0022] The protruding portion 27 is a portion that protrudes in the radial direction dr at the rear end of the main body 21. The protruding portion 27 engages with a positioning portion 34 (described later) of the pen holder 30. A first receiving portion 28 is provided at the front end of the protruding portion 27. The first receiving portion 28 receives the elastic force of a elastic member 36 (described later).

[0023] If the main body 21 of the writing member 20 is thin, it may be difficult for the user to grip the main body 21. In this case, the user may not be able to write the intended handwriting on the writing surface (touch panel). Furthermore, the user may become tired if he or she continues writing. In the writing instrument 10 of this embodiment, the writing member 20 is housed in a pen holder 30 that is thick enough for the user to grip easily. The pen holder 30 is configured so that the writing member 20 functions properly when housed therein. This makes it easier for the user to write the intended handwriting with the writing instrument 10 of this embodiment. Furthermore, the user is less likely to become tired even when he or she continues writing.

[0024] The pen holder 30 comprises a barrel 40, operating members 51 and 52, and a locking film 60. The barrel 40 is a member that houses the writing member 20. The barrel 40 extends along the axial direction da and has a front-end opening 40a at its front end. The central axis of the barrel 40 coincides with the central axis A of the writing instrument 10. When the writing member 20 is housed within the barrel 40, the tip 25 of the writing member 20 protrudes forward from the front-end opening 40a of the barrel 40. The barrel 40 of this embodiment includes a main body 41, a tip member 43, a rear barrel 44, a connecting member 45, a connecting member 47, a crown 48, and a clip member 49.

[0025] The main body 41 is a substantially cylindrical member extending in the axial direction da. The main body 41 is intended to be held by a user. The main body 41 has through holes 42a and 42b extending in the radial direction dr. Operating members 51 and 52 are disposed within the through holes 42a and 42b. In this embodiment, the main body 41 has a first through hole 42a and a second through hole 42b. The first through hole 42a and the second through hole 42b are arranged at a predetermined interval along the axial direction da. The second through hole 42b is located rearward of the first through hole 42a in the axial direction da. The number and arrangement pattern of the through holes 42a and 42b match the number and arrangement pattern of the buttons 22 and 23 of the writing instrument 20. Therefore, for example, if the writing instrument 20 has three buttons, three through holes are provided in the main body 41. Furthermore, for example, when the buttons 22, 23 of the writing member 20 are arranged along the circumferential direction dc, the through holes 42a, 42b are also arranged along the circumferential direction dc.

[0026] The through holes 42a, 42b have a step portion 42c (see FIG. 5). The step portion 42c is configured to be able to come into contact with a head portion 53 (described later) of the operating members 51, 52. In this embodiment, the step portion 42c is a surface facing outward in the radial direction dr on the inner surface of the through holes 42a, 42b.

[0027] The material that constitutes the main body 41 is not particularly limited as long as it has appropriate rigidity to be gripped by a user and to hold the writing member 20. Materials that can be used to constitute the main body 41 include, for example, metal, resin, and wood. For example, using wood as the material that constitutes the main body 41 can give the pen holder 30 a luxurious appearance and also improve the tactile sensation when the user holds it.

[0028] The tip member 43 is a member that forms the tip portion of the writing instrument 10 and the pen holder 30. The tip member 43 has a generally conical shape, and its outer diameter decreases toward the front. The tip member 43 has a front end opening 40a at its front end. The rear end of the tip member 43 is attached to the front end of the main body 41, thereby connecting the tip member 43 to the main body 41. As an example, the tip member 43 is connected to the main body 41 by threading a male thread formed on the outer periphery of the rear end of the tip member 43 into a female thread formed on the inner periphery of the front end of the main body 41.

[0029] The rear axle 44 is disposed rearward of the main body 41 and is a substantially cylindrical member extending in the axial direction da. The front end of the rear axle 44 is attached to the rear end of the main body 41 via a connecting member 45. The connecting member 45 is a member that connects the main body 41 and the rear axle 44. In the example shown in FIG. 2 , a male threaded portion formed on the outer periphery of the front end of the connecting member 45 is threadedly engaged with a female threaded portion formed on the inner periphery of the rear end of the main body 41, thereby connecting the connecting member 45 to the main body 41. Furthermore, a female threaded portion formed on the outer periphery of the rear end of the connecting member 45 is threadedly engaged with a female threaded portion formed on the inner periphery of the front end of the rear axle 44, thereby connecting the rear axle 44 to the connecting member 45.

[0030] When wood is used as the material for constructing main body 41, the threaded portion of main body 41 and the threaded portion of tip member 43 may be fixed to each other using an adhesive, and the threaded portion of main body 41 and the threaded portion of connecting member 45 may be fixed to each other using an adhesive. This firmly fixes main body 41 to tip member 43, and firmly fixes main body 41 to connecting member 45. Rear shaft 44 may be detachably attached to connecting member 45. In this case, by removing rear shaft 44 from connecting member 45, the writing element 20 housed in pen holder 30 can be replaced.

[0031] A crown 48 is attached to the rear end of the rear axle 44 via a connecting member 47. In the example shown in FIG. 2 , a male threaded portion formed on the outer periphery of the front end of the connecting member 47 threads into a female threaded portion formed on the inner periphery of the rear end of the rear axle 44, thereby connecting the connecting member 47 to the rear axle 44. Furthermore, a female threaded portion formed on the inner periphery of the front end of the crown 48 threads into a male threaded portion formed on the outer periphery of the rear end of the connecting member 47, thereby connecting the crown 48 to the connecting member 47. A circular ring portion centered on the central axis A is provided at the rear end of the clip member 49, and this circular ring portion is sandwiched between the rear end of the rear axle 44 and the front end of the crown 48, thereby fixing the rear axle 44.

[0032] A resilient member 36 is disposed between the connecting member 45 and the writing member 20. The resilient member 36 is, for example, a coil spring. The connecting member 45 has a second receiving portion 46 that receives the resilient force of the resilient member 36. The second receiving portion 46 is the rearward-facing surface of a step formed on the inner surface of the connecting member 45. The resilient member 36 is disposed in a compressed state between the first receiving portion 28 of the writing member 20 and the second receiving portion 46 of the connecting member 45. This biases the writing member 20 rearward, and the rear end of the writing member 20 is pressed against the front end of the connecting member 47. This prevents the writing member 20 from rattling inside the pen holder 30.

[0033] In the example shown in FIG. 2, the pen holder 30 has a positioning portion 34 (see FIG. 4) that limits the arrangement angle of the writing element 20 in the circumferential direction dc relative to the barrel tube 40. The positioning element 32 is connected to the rear portion of the connecting element 45. In the example shown, the front portion of the positioning element 32 is press-fitted into the rear portion of the connecting element 45, thereby connecting the connecting element 45 and the positioning element 32. FIG. 4 shows the pen holder 30 with the rear barrel 44 removed from the connecting element 45. As described above, in this embodiment, the writing element 20 housed in the pen holder 30 can be replaced by removing the rear barrel 44 from the connecting element 45, i.e., in the state shown in FIG. 4.

[0034] In the illustrated example, the positioning portion 34 is a notch that opens at the rear end of the positioning member 32. When the writing member 20 is inserted from the rear into the main body 41 of the barrel 40, the protrusion 27 of the writing member 20 enters the notch of the positioning portion 34, thereby limiting the circumferential angle dc of the writing member 20 relative to the barrel 40. Therefore, the width of the notch of the positioning portion 34 is dimensioned to allow the protrusion 27 to enter the notch and to limit the circumferential angle dc of the writing member 20 relative to the barrel 40. Specifically, the width of the notch of the positioning portion 34 is preferably slightly larger than the width of the protrusion 27. Note that, although FIG. 4 shows an example in which the positioning portion 34 has a U-shape with a rounded front end, the specific shape of the positioning portion 34 is not limited thereto.

[0035] Because the pen holder 30 has such positioning portions 34, it is possible to limit the angle of arrangement of the buttons 22, 23 of the writing member 20 relative to the barrel 40 in the circumferential direction dc. In other words, simply by inserting the writing member 20 into the barrel 40, it is possible to position the through-holes 42a, 42b (operating members 51, 52) of the barrel 40 and the buttons 22, 23 in the circumferential direction dc. This makes it easy to position the operating members 51, 52 and the buttons 22, 23 in the circumferential direction dc. Furthermore, it is possible to prevent the writing member 20 from rotating in the circumferential direction dc within the pen holder 30 while the writing instrument 10 is in use, which would cause the operating members 51, 52 and the buttons 22, 23 to become misaligned in the circumferential direction dc.

[0036] The operating members 51 and 52 will be described with reference to Figures 5 and 6. Figure 5 is an enlarged longitudinal cross-sectional view showing the portion marked with V in Figure 2, and Figure 6 is a transverse cross-sectional view corresponding to line VI-VI in Figure 5. The operating members 51 and 52 are members that allow the user to operate the buttons 22 and 23 of the writing member 20 from outside the pen holder 30. In particular, the operating members 51 and 52 transmit the pressing force applied by the user to the buttons 22 and 23 of the writing member 20.

[0037] In this embodiment, the pen holder 30 has a first operating member 51 and a second operating member 52. The first operating member 51 and the second operating member 52 are arranged at a predetermined interval along the axial direction da. The second operating member 52 is located rearward of the first operating member 51 in the axial direction da. The number and arrangement pattern of the operating members 51, 52 match the number and arrangement pattern of the buttons 22, 23 of the writing member 20. Therefore, for example, if the writing member 20 has three buttons, the pen holder 30 is provided with three operating members. Furthermore, for example, if the buttons 22, 23 of the writing member 20 are arranged along the circumferential direction dc, the operating members 51, 52 are also similarly arranged along the circumferential direction dc.

[0038] At least a portion of the operating members 51, 52 is disposed within the through holes 42a, 42b, respectively, of the barrel 40. Specifically, at least a portion of the first operating member 51 is disposed within the first through hole 42a, and at least a portion of the second operating member 52 is disposed within the second through hole 42b.

[0039] The operating members 51, 52 each include a head portion 53, a central portion 54, and an inner portion 56. The inner portion 56 includes an inner end portion 57 and a constricted portion 58. The head portion 53, the central portion 54, the inner end portion 57, and the constricted portion 58 each have a substantially cylindrical shape. Therefore, when viewed along the radial direction dr, the head portion 53, the central portion 54, the inner end portion 57, and the constricted portion 58 each have a circular outline.

[0040] The head 53 is located outside the central portion 54 in the radial direction dr, and the inner portion 56 is located inside the central portion 54 in the radial direction dr. The head 53 is intended to be directly pressed by a user. The outer diameter of the head 53 is larger than the outer diameter of the central portion 54, and a step 55 is formed between the head 53 and the central portion 54. The step 55 is a surface of the head 53 that faces inward in the radial direction dr. When the operating members 51, 52 move inward in the radial direction dr, the step 55 abuts against the step 42c of the through holes 42a, 42b, restricting further movement of the operating members 51, 52. Therefore, the operating members 51, 52 do not pass through the through holes 42a, 42b from the outside to the inside in the radial direction dr.

[0041] The inner portion 56 is the portion that is locked to the locking film 60. The inner end 57 of the inner portion 56 is the portion located innermost in the radial direction dr of the operating members 51, 52. The constricted portion 58 is adjacent to the inner end 57 on the outside in the radial direction dr. In particular, the constricted portion 58 is located between the central portion 54 and the inner end 57. The inner end 57 has an outer diameter D1, and the constricted portion 58 has an outer diameter D2. The outer diameter D2 of the constricted portion 58 is smaller than the outer diameter of the central portion 54 and the outer diameter D1 of the inner end 57. The inner end 57 is intended to abut against the buttons 22, 23 of the writing member 20 and press down the buttons 22, 23 when a user presses the operating members 51, 52 inward in the radial direction dr. The constricted portion 58 is fastened to openings 61 and 62 of the fastening film 60, which will be described later.

[0042] In this embodiment, when the operating members 51, 52 are not pressed by the user, a part of the head 53 protrudes outward in the radial direction dr from the outer surface of the main body 41 of the barrel 40. In addition, the inner part 56 protrudes inward in the radial direction dr from the inner surface of the main body 41 of the barrel 40.

[0043] The locking film 60 will be described with reference to Figures 5 to 8. The locking film 60 is disposed inside the barrel 40 (main body 41). The locking film 60 is a member that locks the operating members 51, 52 inside the barrel 40. By being locked by the locking film 60, the operating members 51, 52 do not slip out of the through holes 42a, 42b of the barrel 40 to the outside in the radial direction dr. Note that in this specification, the term "film" is not distinguished from members called "sheets" or "plates" only in terms of their names. In other words, in this specification, the term "film" also includes members called "sheets" or "plates."

[0044] When placed inside the barrel 40, the locking film 60 is curved along the inner surface of the barrel 40 (main body 41). The locking film 60 of this embodiment may be flexible. When the locking film 60 is flexible, the locking film 60 formed in a flat plate shape can be curved and inserted into the barrel 40. Examples of materials used for such locking film 60 include resins such as polypropylene (PP) and polyethylene terephthalate (PET), and metals such as stainless steel, aluminum, and iron. The thickness of the locking film 60 may be, for example, 30 μm or more and 200 μm or less.

[0045] 7 shows the locking film 60 in a flat, unfolded state. The locking film 60 includes openings 61 and 62 and a slit 71. The openings 61 and 62 lock the operating members 51 and 52. In particular, the openings 61 and 62 lock the constricted portions 58 of the operating members 51 and 52.

[0046] In this embodiment, the locking film 60 has a plurality of openings 61, 62. In particular, the locking film 60 has a first opening 61 and a second opening 62. The first opening 61 locks the first operating member 51, and the second opening 62 locks the second operating member 52. The first opening 61 and the second opening 62 are arranged at a predetermined interval along the axial direction da. The second opening 62 is located rearward of the first opening 61 in the axial direction da. The number and arrangement pattern of the openings 61, 62 match the number and arrangement pattern of the operating members 51, 52. Therefore, for example, if the pen holder 30 has three operating members, three openings are provided in the locking film 60. Furthermore, for example, if the operating members 51, 52 of the pen holder 30 are arranged along the circumferential direction dc, the openings 61, 62 are also similarly arranged along the circumferential direction dc.

[0047] Each of the openings 61, 62 includes a large-diameter portion 63, a small-diameter portion 64, and a connecting portion 66. In the example shown in FIGS. 7 and 8, the large-diameter portion 63 and the small-diameter portion 64 each have a circular outline except for the portion connecting to the connecting portion 66. The large-diameter portion 63 has a shape and dimensions that allow the inner end portion 57 of the operating member 51, 52 to pass through. In particular, the inner diameter D3 of the large-diameter portion 63 is larger than the outer diameter D1 of the inner end portion 57. The small-diameter portion 64 has a shape and dimensions that prevent the inner end portion 57 from passing through but that allow the constricted portion 58 to be accommodated. In particular, the inner diameter D4 of the small-diameter portion 64 is larger than the outer diameter D2 of the constricted portion 58 and smaller than the outer diameter D1 of the inner end portion 57.

[0048] The connecting portion 66 is a passage that connects the large diameter portion 63 and the small diameter portion 64. The connecting portion 66 has a width W 67 8, in this embodiment, the connecting portion 66 has a first portion (tapered portion) 67 in which the width W 67 a first portion 67 where the width W 68The connecting portion 66 includes a second portion 68 having a width W 67 Alternatively, the connecting portion 66 may have only the first portion 67 where the width decreases. Alternatively, the connecting portion 66 may include a portion where the width increases from the large diameter portion 63 toward the small diameter portion 64. The "width" of the connecting portion 66 refers to the dimension along the circumferential direction dc. The second portion 68 is located forward of the first portion 67. In other words, the second portion 68 is located on the small diameter portion 64 side of the first portion 67. The first portion 67 is connected to the large diameter portion 63, and the second portion 68 is connected to the small diameter portion 64. The width W of the front end (the end on the small diameter portion 64 side) of the first portion 67 is 67 is the width W of the second portion 68 68 Therefore, the width W of the rear end of the first portion 67 (the end on the large diameter portion 63 side) is equal to 67 is the width W of the second portion 68 68 The width W of the second portion 68 is greater than 68 is the minimum width W of the connection portion 66 min is.

[0049] When the fastening film 60 is properly assembled to the operating members 51 and 52, the constricted portion 58 of the operating members 51 and 52 is located within the small diameter portion 64. In this embodiment, the minimum width W min (W 68 ) is smaller than the outer diameter D2 of the constricted portion 58 of the operating members 51, 52. In this case, when the constricted portion 58 is positioned within the small diameter portion 64, the constricted portion 58 is prevented from slipping out from the small diameter portion 64 toward the large diameter portion 63. On the other hand, when the locking film 60 is assembled to the operating members 51, 52, as will be described later, the locking film 60 is moved so that the constricted portion 58 passes through the connecting portion 66 and moves from the large diameter portion 63 toward the small diameter portion 64. In this case, the large diameter portion 63 is guided by the first portion 67, which deflects the locking film 60 around the connecting portion 66, allowing the locking film 60 to move.

[0050] In this embodiment, the openings 61 and 62 are through holes formed in the fastening film 60, but the specific form of the openings 61 and 62 is not limited to this. For example, the openings 61 and 62 may be notches formed in the periphery of the fastening film 60.

[0051] The locking film 60 has slits 71. In the example shown in FIG. 7, the locking film 60 has three slits 71. At least one slit 71 is located between two adjacent openings 61, 62. When a user presses the operating members 51, 52 and the operating members 51, 52 move inward in the radial direction dr, the locking film 60 around the openings 61, 62 is pushed by the operating members 51, 52 (central portion 54) and bends. At this time, the deformation of the locking film 60 around one opening 61, 62 is transmitted to the vicinity of the other opening 61, 62, and the buttons 22, 23 of the writing member 20 corresponding to the other opening 61, 62 are pressed, which may cause the writing member 20 to malfunction. For example, when a user presses the first operating member 51 with the intention of pressing the first button 22 of the writing member 20, the deformation of the locking film 60 around the first opening 61 may be transmitted to the vicinity of the second opening 62, causing the second operating member 52 locked in the second opening 62 to move inward in the radial direction dr. In this case, not only the first button 22 of the writing member 20 but also the second button 23 may be pressed, causing the writing member 20 to malfunction.

[0052] In this embodiment, the slit 71 is formed between two adjacent openings 61, 62, and the slit 71 prevents deformation of the locking film 60 around one of the openings 61, 62 from spreading to the vicinity of the other opening 61, 62. Therefore, malfunction of the writing member 20 can be effectively prevented.

[0053] 7, a jig opening 75 is formed at the front end of the locking film 60. The jig opening 75 is a notch formed at the front edge of the locking film 60. The jig opening 75 is an opening that engages with part of a jig used when inserting the locking film 60 into the barrel 40 and assembling it to the operating members 51, 52.

[0054] Next, an example of a method for assembling the locking film 60 to the operating members 51, 52 will be described with reference to Figures 9 and 10. In Figures 9 and 10, the operating members 51, 52 are shown cut at the constricted portion 58 as viewed from the outside in the radial direction dr.

[0055] The locking film 60 can be attached to the operating members 51, 52 without the tip member 43 attached to the main body 41 of the barrel 40. First, the locking film 60 is bent so that the large diameter portion 63 is positioned rearward relative to the small diameter portion 64, and the locking film 60 is inserted into the main body 41 from the front end thereof. At this time, the locking film 60 may be inserted into the main body 41 with part of a jig (not shown) engaged with the jig opening 75 of the locking film 60. Thereafter, the locking film 60 is positioned relative to the main body 41 so that the first through hole 42a of the main body 41 overlaps with the large diameter portion 63 of the first opening 61, and so that the second through hole 42b overlaps with the large diameter portion 63 of the second opening 62, as viewed in the radial direction dr.

[0056] Next, the operating members 51, 52 are inserted into the through holes 42a, 42b of the main body 41 from the outside of the main body 41. More specifically, the first operating member 51 is inserted into the first through hole 42a, and the second operating member 52 is inserted into the second through hole 42b. The large diameter portions 63 of the openings 61, 62 have a shape and dimensions that allow the inner end portions 57 of the operating members 51, 52 to pass through. Therefore, the inner end portions 57 pass through the large diameter portions 63, and the constricted portions 58 are disposed within the large diameter portions 63 (see FIG. 9).

[0057] Thereafter, the locking film 60 is moved rearward. As a result, the constricted portion 58 moves relatively from the large diameter portion 63 toward the small diameter portion 64 through the connecting portion 66. When the locking film 60 moves from the state shown in FIG. 9 , the constricted portion 58 first becomes positioned within the first portion 67 of the connecting portion 66. As the locking film 60 moves further, the constricted portion 58 moves toward the small diameter portion 64 through the second portion 68, bending the locking film 60 around the connecting portion 66. In this state, the constricted portion 58 is positioned within the small diameter portion 64 and is locked to the small diameter portion 64. As a result, the operating members 51, 52 are locked to the locking film 60.

[0058] The small diameter portion 64 has a shape and dimensions that prevent the inner end portion 57 from passing through. Therefore, when the operating members 51, 52 are locked by the locking film 60, the operating members 51, 52 will not slip outward in the radial direction dr from the through holes 42a, 42b of the main body 41. Note that the through holes 42a, 42b have step portions 42c that can come into contact with the step portions 55 of the operating members 51, 52, and therefore the operating members 51, 52 will not slip outward in the radial direction dr from the through holes 42a, 42b.

[0059] In this embodiment, the minimum width W of the connecting portion 66 min (W 68 ) is smaller than the outer diameter D2 of the constricted portion 58 of the operating members 51, 52. Therefore, when the operating members 51, 52 are locked to the locking film 60, the constricted portion 58 is prevented from slipping out from the small diameter portion 64 toward the large diameter portion 63 without intentionally moving the locking film 60.

[0060] The locking film 60 may be inserted into the main body 41 with the tip member 43 attached to the main body 41. The locking film 60 may also be inserted into the main body 41 from the rear end of the main body 41. The locking film 60 may also be inserted into the main body 41 with the large diameter portion 63 positioned forward relative to the small diameter portion 64. In this case, after the constricted portion 58 is positioned within the large diameter portion 63, the locking film 60 can be moved forward to relatively move the constricted portion 58 from the large diameter portion 63 toward the small diameter portion 64.

[0061] The pen holder 30 of this embodiment is a pen holder 30 capable of accommodating a writing instrument 20 therein, and comprises a barrel 40 having through holes 42a, 42b extending in the radial direction dr, operating members 51, 52 at least partially disposed within the through holes 42a, 42b, and a locking film 60 disposed inside the barrel 40, and the operating members 51, 52 are locked to the locking film 60.

[0062] The writing instrument 10 of this embodiment includes the above-described pen holder 30 and a writing member 20 housed inside the pen holder 30.

[0063] With such a pen holder 30 and writing implement 10, the operating members 51, 52 can be attached to the barrel 40 simply by inserting the locking film 60 into the main body 41 and locking the operating members 51, 52 to the locking film 60 inside the barrel 40. Therefore, the operating members 51, 52 can be easily attached to the barrel 40.

[0064] In the pen holder 30 of this embodiment, the operating members 51, 52 have an inner end 57 and a constricted portion 58 located radially outside the inner end 57, and the locking film 60 has openings 61, 62 through which the constricted portion 58 is locked.

[0065] With this pen holder 30, it is possible to realize a locking structure between the operating members 51, 52 and the locking film 60 simply by providing constricted portions 58 in the operating members 51, 52 and openings 61, 62 in the locking film 60 inside the barrel 40. In other words, a simple structure can realize a locking structure between the operating members 51, 52 and the locking film 60.

[0066] In the pen holder 30 of this embodiment, the openings 61, 62 have a large diameter portion 63 through which the inner end portion 57 can pass, a small diameter portion 64 through which the inner end portion 57 cannot pass and which can accommodate the constricted portion 58, and a connecting portion 66 that connects the large diameter portion 63 and the small diameter portion 64.

[0067] With this pen holder 30, when the constricted portions 58 of the operating members 51, 52 are positioned within the large diameter portions 63 of the openings 61, 62, the operating members 51, 52 can be locked to the locking film 60 simply by sliding the locking film 60 so that the constricted portions 58 move from the large diameter portions 63 toward the small diameter portions 64. This makes it even easier to attach the operating members 51, 52 to the barrel 40.

[0068] In the pen holder 30 of this embodiment, the locking film 60 has a plurality of openings 61, 62 and a slit 71 located between two adjacent openings 61, 62.

[0069] When a user presses the operating members 51, 52 and the operating members 51, 52 move inward in the radial direction dr, the operating members 51, 52 (central portions 54) push the locking film 60 around the openings 61, 62, causing it to bend. At this time, the deformation of the locking film 60 around one of the openings 61, 62 may spread to the vicinity of the other opening 61, 62, causing the buttons 22, 23 of the writing member 20 corresponding to the other opening 61, 62 to be pressed, potentially causing the writing member 20 to malfunction. According to the pen holder 30 of this embodiment, the slits 71 prevent the deformation of the locking film 60 around one of the openings 61, 62 from spreading to the vicinity of the other opening 61, 62. Therefore, malfunction of the writing member 20 can be effectively prevented.

[0070] The pen holder 30 of this embodiment has a positioning portion 34 that limits the arrangement angle of the writing member 20 relative to the barrel 40 in the circumferential direction dc.

[0071] With this pen holder 30, it is possible to limit the angle of arrangement of the buttons 22, 23 of the writing member 20 in the circumferential direction dc relative to the barrel 40. In other words, simply inserting the writing member 20 into the barrel 40 allows the operating members 51, 52 and the buttons 22, 23 to be positioned in the circumferential direction dc. This makes it easy to position the operating members 51, 52 and the buttons 22, 23 in the circumferential direction dc. Furthermore, it is possible to prevent the writing member 20 from rotating in the circumferential direction dc within the pen holder 30 while the writing instrument 10 is in use, which would cause the operating members 51, 52 and the buttons 22, 23 to become misaligned in the circumferential direction dc. [Explanation of symbols]

[0072] 10 Writing instruments 20 Writing materials 21 Main body 22 First button 23 Second button 25 Tip 27 Protrusion 28 First Receiving Section 30 Pen Holder 32 Positioning member 34 Positioning part 36 Elastic members 40 Shaft cylinder 40a Front end opening 41 Main body 42a 1st through hole 42b 2nd through hole 42c Stepped section 43 Tip member 44 rear axle 45 Connecting member 46 Second Receiving Section 47 Connecting member 48 Head crown 49 Clip member 51 first operating member 52 second operating member 53 Head 54 Central part 55 Step part 56 Inner part 57 Inner end 58 Waist 60 Retaining Film 61 First Opening 62 Second Opening 63 Large diameter section 64 Small diameter section 66 Connection 67 Part 1 68 Part 2 71 Slit 75 Jig opening A Center axis da axial direction dc circumferential direction dr radial direction

Claims

1. A pen holder capable of accommodating a writing implement therein, a barrel having a through hole extending in a radial direction; an operating member at least a portion of which is disposed within the through hole; A locking film disposed inside the barrel, the operating member is engaged with the engaging film, the operating member has an inner end portion and a constricted portion located radially outward from the inner end portion, The locking film has an opening into which the constricted portion is locked.

2. The opening is a large diameter portion through which the inner end portion can pass; a small diameter portion through which the inner end portion cannot pass and which can accommodate the constricted portion; The pen holder according to claim 1 , further comprising a connecting portion that connects the large diameter portion and the small diameter portion.

3. The pen holder according to claim 1 or 2, wherein the locking film has a plurality of the openings and a slit located between two adjacent openings.

4. 4. The pen holder according to claim 1, further comprising a positioning portion that limits the circumferential angle of the writing member relative to the barrel.

5. A writing implement comprising the pen holder according to any one of claims 1 to 4 and a writing element housed inside the pen holder.

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