Writing instrument

Abstract

To provide a writing instrument that accommodates a plurality of refills, in which the peeling of the identification display that determines the type of refill is suppressed.SOLUTION: The writing instrument includes a barrel that accommodates a plurality of refills, and a light-transmitting display member that is ring-shaped, is external to the barrel, and is provided with an identification display for identifying the type of the refill on the inner portion in the radial direction.SELECTED DRAWING: Figure 4B

Description

[Technical field]

[0001] This disclosure relates to writing instruments. [Background technology]

[0002] In multi-core composite or double-function writing instruments, the exterior or tip of the ballpoint pen may be printed or painted in the same color as the refill in order to distinguish the refill color (see, for example, Patent Document 1).

[0003] Patent Document 1 discloses a multi-lead writing instrument in which grooves corresponding to the refills are formed on the outer periphery of the cap and the inside of these grooves is painted the same color as the refills, making it possible to distinguish the color of the refills. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2015-39799 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the multi-lead writing instrument disclosed in Patent Document 1, the inside of the groove formed on the outer periphery of the crown is painted, but there is a risk that the paint will peel off due to abrasion or the like when the writing instrument is used for an extended period of time.

[0006] An aspect of the present disclosure aims to prevent peeling of an identification mark for identifying the type of refill in a writing instrument that contains multiple refills. [Means for solving the problem]

[0007] The writing instrument of the first aspect of the present disclosure comprises a barrel that contains a plurality of refills, and a ring-shaped, light-transmitting display member that is attached to the barrel and has an identification marking on its radially inner portion for identifying the type of the refill.

[0008] In the writing instrument of the first embodiment, an identification mark for identifying the type of refill is provided on the radially inner portion of the light-transmitting display member. Therefore, even when the display member is viewed from the outside (radially outer side), the identification mark provided on the radially inner portion can be seen. In addition, since the identification mark is provided on the radially inner portion of the display member, peeling of the identification mark due to abrasion or the like can be suppressed even when the writing instrument is used for a long period of time. As a result, the writing instrument of the first embodiment can maintain the visibility of the identification mark for a long period of time.

[0009] A writing instrument of a second aspect of the present disclosure is the writing instrument of the first aspect, wherein the display member is formed with an inclined display surface that is inclined with respect to the axis of the barrel, and the identification marking is a colored portion affixed to the inclined display surface.

[0010] In the writing instrument of the second embodiment, a colored portion is provided as an identification mark for identifying the type of refill on the inclined indicating surface that is inclined relative to the axis of the barrel, making it easy to identify the type of refill from the outside of the indicating member.

[0011] A writing instrument according to a third aspect of the present disclosure is the writing instrument according to the second aspect, wherein the indicating inclined surface constitutes a part of a closed space formed by the barrel and the indicating member.

[0012] In the writing instrument of the third aspect, the inclined display surface constitutes a part of the closed space formed by the barrel and the display member, and therefore the visibility of the colored part on the inclined display surface can be ensured by preventing foreign matter from entering the closed space.

[0013] A writing instrument according to a fourth aspect of the present disclosure is the writing instrument according to any one of the first to third aspects, wherein an external light introducing section is provided on the display member.

[0014] In the writing instrument of the fourth aspect, since the external light introducing portion is provided on the display member, it is possible to ensure visibility of the identification display by the light introduced from the external light introducing portion. Effect of the Invention

[0015] One aspect of the present disclosure can suppress peeling of an identification mark for identifying the type of refill in a writing instrument that contains multiple refills. [Brief description of the drawings]

[0016] [Figure 1] 1 is a front view showing the overall configuration of a writing instrument according to an embodiment; [Diagram 2] FIG. 2 is a side view of the writing instrument shown in FIG. [Diagram 3] 2 is a cross-sectional view of the writing instrument shown in FIG. 1. [Figure 4A] 4 is an enlarged cross-sectional view of the rear end side of the writing implement shown in FIG. 3. [Figure 4B] FIG. 4B is a further enlarged cross-sectional view of a main part of FIG. 4A. [Diagram 5] FIG. 2 is a perspective view of the writing instrument shown in FIG. [Figure 6] 6 is an exploded perspective view of the rear end side of the writing instrument shown in FIG. 5. [Figure 7] 6 is an exploded perspective view of the rear end side of the writing instrument shown in FIG. 5 with the crown removed. [Figure 8] 2 is a perspective view of the rear barrel of the writing instrument shown in FIG. 1. [Figure 9] FIG. 9 is a side view of the rear axle shown in FIG. 8. [Figure 10] FIG. 9 is a front view of the rear axle shown in FIG. 8. [Figure 11] 2 is a front view of a display member used in the writing instrument shown in FIG. [Figure 12] FIG. 12 is a side view of the display member shown in FIG. [Figure 13] 12 is a rear view of the display member shown in FIG. [Figure 14] 12 is a front perspective view of the display member shown in FIG. 11. FIG. [Figure 15] 12 is a perspective view of the display member shown in FIG. 11 as viewed from behind. [Figure 16] 12 is an enlarged cross-sectional view of the display member for explaining one method of forming a colored portion on the display member shown in FIG. 11. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] A writing instrument 20 according to an embodiment of the present disclosure will now be described with reference to the drawings. In each drawing, "front" of the writing instrument 20 and its components refers to the direction of the tip of the writing instrument 20, "rear" refers to the opposite direction, "axial direction" refers to the direction of the axis that passes through the barrel 23 from the front to the rear, and "transverse direction" refers to the direction perpendicular to the axial direction. Also, reference numerals commonly used in each drawing represent the same configuration or members even if not specifically mentioned in the description of each drawing.

[0018] [Overall configuration of writing instrument 20] The writing instrument 20 according to this embodiment is a multi-function writing instrument in which refills 22 of three colors, for example black, red, and blue, are accommodated in a barrel 23 as writing elements.

[0019] 1 and 2 are a plan view and a side view of a writing instrument 20. In Fig. 1, the writing instrument 20 has a barrel 23 that houses three refills 22.

[0020] (Shaft tube 23) As shown in Fig. 3, barrel tube 23 is a cylindrical member that is hollow, has a tapered tip, and is formed flat at the rear end. Barrel tube 23 can be disassembled into front barrel 24 that forms the front end side, rear barrel 25 that forms the rear end side, center barrel 26 that forms the surface between front barrel 24 and rear barrel 25, and crown 27 attached to the rear end of rear barrel 25.

[0021] 3, front barrel 24 has a tapered conical tip portion 24A, and the rear end side of this tip portion 24A is formed into a straight cylindrical shape. In addition, a tip opening 24B is opened at the tip of conical tip portion 24A.

[0022] Each of the three refills 22 housed inside the barrel 23 has a ballpoint pen tip 22A, which is a writing tip, at its tip. Among the three refills 22, any one of the ballpoint pen tip 22A can protrude to the outside through a tip opening 24B.

[0023] Further, a female thread portion 24C is formed on the inner circumferential surface of front barrel 24 near the rear end.

[0024] Rear barrel 25 is provided with operating section 25A on which three knock rods 30 are slidably mounted for projecting ballpoint pen tip 22A from front end opening 24B, and core section 25B which extends from operating section 25A through the inside of center barrel 26 to the vicinity of the rear end of front barrel 24. Of these, operating section 25A, which is the rear end section of rear barrel 25, is coupled to the rear end section of clip section 28 for clamping a sheet-like object between the outer circumferential surface of rear barrel 25.

[0025] The center shaft 26 is a cylindrical member that has a side wall with a constant thickness and extends entirely in a straight line. On the other hand, rear shaft 25 has an outer diameter of core portion 25B smaller than that of operation portion 25A, and is provided with a stepped circumferential surface where a step is formed at the boundary between core portion 25B and operation portion 25A. The step between operating portion 25A and core portion 25B has a dimension corresponding to the thickness of the side wall portion of center shaft 26. As a result, when center shaft 26 with core portion 25B inserted therein is connected to operating portion 25A, the outer circumferential surface of center shaft 26 and the outer circumferential surface of operating portion 25A form a continuous surface, and thus the three outer circumferential surfaces of front shaft 24, center shaft 26, and rear shaft 25 form a single continuous surface. Also, a female thread portion 25C is formed near the tip of the inner circumferential surface of core portion 25B.

[0026] An inner threaded pipe 29 that connects front barrel 24 and core portion 25B of rear barrel 25 is provided inside the boundary between front barrel 24 and center barrel 26.

[0027] The central screw tube 29 is an entirely cylindrical member. An external screw portion 29A that screws into the internal screw portion 24C of the front barrel 24 is formed at the end of the central screw tube 29 on the front barrel 24 side. An external screw portion 29B that screws into the internal screw portion 25C of the rear barrel 25 is formed at the end of the central screw tube 29 on the rear barrel 25 side.

[0028] The front barrel 24 and the rear barrel 25 are connected to each other by screwing the male threaded portion 29A of the central threaded tube 29 into the female threaded portion 24C of the front barrel 24, and by screwing the male threaded portion 29B of the central threaded tube 29 into the female threaded portion 25C of the rear barrel 25.

[0029] A rod-shaped refill tail plug 22B that connects the rear end of the refill 22 and the tip end of the knock bar 30 is provided between them. A spacer 40 that guides the refill tail plug 22B along the axial direction of the rear barrel 25 is provided inside the rear barrel 25.

[0030] The spacer 40 has a refill guide portion 41 through which the rear ends of the three refills 22 are inserted and which guides the rear ends, a tail plug holding portion 42 which holds the refill tail plug 22B inserted inside the coil spring 22C so that it can move along the axial direction of the rear shaft 25, and a protrusion 47 to which the cam shaft support shaft 51 is connected.

[0031] Here, when the knock bar 30 is operated forward, the writing instrument 20 is pressed by the knock bar 30, the refill tail plug 22B moves forward, and the flange 22E of the refill tail plug 22B compresses the coil spring 22C, while the ballpoint pen tip 22A of the refill 22 protrudes to the outside from the tip opening 24B. In other words, the writing instrument 20 is formed so that when one of the three knock bars 30 is slid toward the front of the barrel 23, the ballpoint pen tip 22A of the refill 22 connected to the knock bar 30 protrudes from the tip opening 24B of the barrel 23, and writing is possible. When the knock bar 30 is operated forward, the coil spring 22C is further compressed between the flange 22E of the refill tail plug 22B and the partition wall 41A of the spacer 40, generating an elastic force that returns the knock bar 30 to its original position.

[0032] 1, 8, and 9, a plurality of guide slits 52 extending along the axial direction of rear barrel 25 are opened in the peripheral surface of operating portion 25A of rear barrel 25. These guide slits 52 are provided in three locations according to the number of refills 22, and are arranged side by side at 90 degree intervals along the peripheral direction of rear barrel 25.

[0033] A pair of guide rails (not shown) are provided on the inner peripheral surface of the rear axle 25, protruding radially inward from positions along the longitudinal side edges of the guide slits 52. The number of these guide rails provided corresponds to the number of guide slits 52.

[0034] Each of the three knock bars 30 is disposed between a pair of guide rails among the multiple pairs of guide rails, and is guided by the pair of guide rails to be slidable along the axial direction of the rear axle 25.

[0035] As shown in Figures 3 and 4A, the knock rod 30 is a rod-shaped member extending along the axial direction of the rear barrel 25. The knock rod 30 has a rear end surface 32 that faces the rear end inner surface 25D of the rear barrel 25, and an exposed side surface 33 that is exposed to the outside through the guide slit 52. The tip of the knock rod 30 is provided with a connection portion 34 that protrudes downward from the lower surface in Figure 3. The tip surface of the connection portion 34 of the knock rod 30 is adapted to be connected to the rear end of the refill tail plug 22B.

[0036] A finger hook 35 is provided at the rear end of the knock bar 30, which bulges out the exposed side surface 33. This finger hook 35 is provided to catch the user's finger so that the user can easily slide the knock bar 30 toward the front of the barrel 23.

[0037] As shown in FIG. 4A, the rear end of the knock bar 30 is provided with an engagement portion 36 that protrudes toward the axis CL.

[0038] As shown in FIG. 4A, the engagement portion 36 of the knock bar 30 has an inclined surface 36A facing obliquely downward in order to correspond to an inclined surface 61A of a rotating cam 60, which will be described later.

[0039] 4A, a contact protrusion 37 that protrudes toward the rear end inner surface 25D of the rear barrel 25 is provided on the rear end surface 32 of the knock bar 30. A surface protrusion 38 that extends the exposed side surface 33 rearward is provided on the rear end surface 32 of the knock bar 30 at a distance from the contact protrusion 37.

[0040] When the knock bar 30 as described above is slid rearward along the longitudinal direction of the guide slit 52, it can slide up to a position where the rear end of the contact protrusion 37 abuts against the rear end inner surface 25D, as shown in Fig. 4A. In this state where the contact protrusion 37 abuts against the rear end inner surface 25D, a gap G is formed between the rear end of the surface protrusion 38 and the rear end edge of the guide slit 52, as shown in Figs. 4A and 4B.

[0041] Here, the rear end of the surface protrusion 38 extends further rearward than the rear end of the contact protrusion 37. When the knock bar 30 is slid rearward to a position where the rear end of the contact protrusion 37 abuts against the rear end inner surface 25D, a gap G is formed between the rear end of the surface protrusion 38 and a plate surface 120A (the lower plate surface in FIG. 4A ) of a color indicating ring 120 described later.

[0042] Furthermore, a rising portion 25E that protrudes toward the knock bar 30 from the outer peripheral edge in the radial direction is provided on the rear end inner surface 25D of the rear shaft 25. The raised portion 25E is formed so as to be sandwiched between the contact protrusion 37 and the surface protrusion 38 when the knock bar 30 is disposed at a position where the contact protrusion 37 on the knock bar 30 side abuts against the rear end inner surface 25D.

[0043] 2, a rotating cam 60 is provided inside the rear axle 25 so as to be rotatable inside the rear axle 25 and to be able to reciprocate along the axial direction. That is, a fitting recess 51A is provided at the tip portion of the cam shaft support shaft 51, into which the protrusion 47 of the tail plug holder 42 fits.

[0044] A bearing hole 25F for supporting the rear end side of the cam shaft support shaft 51 is provided in the center portion of the rear end inner surface 25D of the rear shaft 25.

[0045] The rotating cam 60 is provided with a shaft insertion hole 62 that passes through the rotating cam 60 along the axial direction of the rear axle 25 .

[0046] The cam shaft support shaft 51 has a fitting recess 51A at its tip portion fitted into the protrusion 47 on the spacer 40 side, so that its tip portion is supported by the spacer 40, and its rear end portion is inserted into a bearing hole 25F on the rear axle 25 side and supported by the rear axle 25. The cam shaft support shaft 51 has an intermediate portion inserted into a shaft insertion hole 62 of the rotating cam 60, so as to rotatably support the rotating cam 60.

[0047] A coil spring 63 is wound around the periphery of the portion of the cam shaft support shaft 51 near the tip end thereof, and serves as a cam biasing means for biasing the rotating cam 60 toward the rear end of the rear axle 25 .

[0048] 4A, the rotating cam 60 has three protrusions 64 formed on the outer circumferential surface of a cylindrical main body 60A, the protrusions 64 protruding radially outward from the outer circumferential surface of the main body 60A of the rotating cam 60. These protrusions 64 are arranged side by side in the circumferential direction on the outer circumferential surface of the main body 60A of the rotating cam 60.

[0049] The protruding portion 64 is provided with an inclined surface 61A that is inclined in correspondence with the inclined surface 36A of the engaging portion 36 formed on the corresponding knock bar 30 and engages with the inclined surface 36A.

[0050] 4A, a contact portion 65 that meshes with the front cam portion 59 on the rear axle 25 side is provided on the rear end surface of the rotating cam 60. Specifically, the contact portion 65 has a V-shaped valley portion corresponding to the inverted V-shaped peak portion on the front cam portion 59 side, and an inverted V-shaped peak portion corresponding to the V-shaped valley portion on the front cam portion 59 side.

[0051] In addition, a locking portion 66 (see FIG. 4A) is provided at the tip of the protrusion 64, which locks the engagement portion 36 provided at the rear end of the corresponding knock bar 30 when the knock bar 30 moves forward.

[0052] In the above, when the knock bar 30 advances forward, the inclined surface 61A formed on the protrusion 64 of the rotating cam 60 is pressed against the engagement portion 36 of the knock bar 30. As a result, the rotating cam 60 itself rotates, and the abutment portion 65 is guided by the front cam portion 59 on the rear axle 25 side, so that the rotating cam 60 advances against the biasing force of the coil spring 63.

[0053] Furthermore, when the engaging portion 36 of the knock bar 30 advances further and passes by the side of the protrusion 64, the urging force of the coil spring 63 causes the rotating cam 60 itself to retreat to its original axial position, and the abutment portion 65 is guided by the front cam portion 59, causing the rotating cam 60 to reverse to its original rotation angle position.

[0054] Furthermore, the rotating cam 60 is formed so as to reverse to the original rotation angle position, in other words, to a position where the engaging portion 36 of the knock bar 30 can be engaged, and the engaging portion 66 engages the engaging portion 36. In this state, the ballpoint pen tip 22A of the refill 22 connected to the knock bar 30 protrudes to the outside from the tip opening 24B of the front barrel 24. Also, in this state, when another knock bar 30 not shown in FIG. 4A is slid toward the front of the barrel 23, the rotating cam 60 rotates again, the engaging portion 36 is released from the engaging portion 66, and the ballpoint pen tip 22A of the refill 22 connected to the knock bar 30 is recessed into the tip opening 24B of the front barrel 24 by the biasing force of the coil spring 22C and returns to its original position.

[0055] As shown in FIGS. 1 and 3, the clip portion 28 includes a clip body 101 for clamping a sheet-like object between itself and the outer circumferential surface of the rear body 25. As shown in FIG.

[0056] Clip main body 101 includes clamping portion 101A that clamps a sheet-like object between itself and the outer peripheral surface of rear shaft 25, and ring-shaped fixed ring portion 101B that is fixed to rear shaft 25.

[0057] Here, as shown in Figures 4A and 6, a cylindrical fixing portion 25H is provided at the rear end portion 25G of the rear axle 25, protruding rearward from the rear end portion 25G. A male thread portion 25J is formed on the outer circumferential surface of the fixing portion 25H. A top screw tube 103 having a female thread formed on the inner circumferential surface is screwed into this male thread portion 25J.

[0058] The clip portion 28 is fixed to the rear axle 25 by inserting the fixing portion 25H into the inside of the fixed ring portion 101B and by screwing the top screw tube 103 into the male thread portion 25J with the fixed ring portion 101B sandwiched between the rear end portion 25G of the rear axle 25 and the top screw tube 103.

[0059] As shown in Figures 4A and 7, the crown 27 is a member that closes the rear end opening of the barrel 23, specifically, the opening 25L formed in the end face 25K of the fixing portion 25H. The crown 27 is a cap-shaped member that is formed in a hollow truncated cone shape and has an open bottom. A stepped hole 93 is formed in a rear end face 91 of the crown 27 located behind the barrel 23, which penetrates the center portion and has a stepped surface 92 inside.

[0060] Edge portion 95 surrounding the bottom opening of crown 27 is provided with a recess 95A that is formed by partially cutting edge portion 95 in order to avoid interference with fixed ring portion 101B of clip portion 28. Edge portion 95 is also provided with a recess 95B that is partially cut out in order to avoid interference with outer circumferential portion 120C of color indicating ring 120, which will be described later. In this embodiment, three recesses 95B are formed.

[0061] As shown in Fig. 4A, a cap member 98 having a flange 98A formed at its rear end is inserted into the stepped hole 93 of the crown 27. The cap member 98 has an open front end into which the rear end 51B of the camshaft support shaft 51 fits tightly. The cap member 98 is inserted into the stepped hole 93, and the flange 98A of the cap member 98, which fits tightly onto the rear end 51B of the camshaft support shaft 51, engages with the stepped surface 92 of the stepped hole 93, thereby fixing the crown 27 to the rear end of the rear axle 25.

[0062] (Color indicator ring 120) 1 and 2, the writing instrument 20 is equipped with a color display ring 120 as an indicator member. As shown in FIG. 4A, the color display ring 120 is mounted on the exterior of the fixed portion 25H of the rear barrel 25. In other words, the fixed portion 25H passes through the color display ring 120. Specifically, as shown in FIG. 4A, FIG. 5, and FIG. 6, the color display ring 120 is disposed between the rear end portion 25G of the rear barrel 25 and the fixed ring portion 101B of the clip portion 28.

[0063] As shown in Fig. 6 and Fig. 14, the color display ring 120 is a plate-like, ring-like member having optical transparency. Specifically, the color display ring 120 is a member formed in a ring shape from an optically transparent material. The color display ring 120 may be transparent (colorless and transparent in this case) or translucent, but is preferably transparent in consideration of the visibility of the colored portion described later. Furthermore, the material from which the color display ring 120 is formed is preferably a transparent or translucent resin material from the viewpoint of strength, but is not limited thereto.

[0064] As shown in Fig. 11 and Fig. 14, the color indicator ring 120 has a colored portion 122 on its radially inner side as an identification mark for identifying the type of refill 22. Specifically, the color indicator ring 120 has inclined indicator surfaces 124 formed on its radially inner side at intervals in the circumferential direction and inclined with respect to the axis CL of the barrel 23, and the colored portions 122 are attached to the inclined indicator surfaces 124. The inclined indicator surfaces 124 are portions that contact the bottom of a concave portion formed by obliquely cutting out the inner edge of the inner peripheral portion 120B of the color indicator ring 120 on the plate surface 120A side. The inclined indicator surfaces 124 are inclined so that the thickness of the color indicator ring 120 gradually decreases toward the inner peripheral surface of the color indicator ring 120. The inclined indicator surfaces 124 are inclined with respect to the axis CL within a range of 10 degrees to 80 degrees. Specifically, as shown in Fig. 4B, the display inclined surface 124 is inclined within a range of 10 degrees to 80 degrees with respect to a straight line SL parallel to the axis CL. Note that the inclination angle θ of the display inclined surface 124 with respect to the straight line SL is preferably within a range of 20 degrees to 55 degrees rather than within a range of 10 degrees to 80 degrees. The display inclined surfaces 124 are formed in the same number as the refills 22 (three in this embodiment). The colored portion 122 may be provided over the entire surface of the display inclined surface 124 or may be provided only in a portion thereof, but it is preferable to form it over the entire surface from the viewpoint of color visibility.

[0065] Moreover, each colored portion 122 is a color corresponding to the color of each refill 22. As shown in FIG. 16, the colored portion 122 is provided by applying ink to the display inclined surface 124. Specifically, as shown in FIG. 16, ink I is sprayed onto the display inclined surface 124 along the plate thickness direction of the color display ring 120 (the same direction as the direction along the axis line CL) to adhere the ink to the display inclined surface 124. By forming the display inclined surface 124, application from the axis line CL direction can be made easier. Note that the means for forming the colored portion 122 is not limited as long as it can be formed on the display inclined surface 124. For example, a colored film may be attached instead of ink.

[0066] In addition, in a state where the color display ring 120 is mounted on the fixed portion 25H of the rear axle 25, the inner peripheral portion 120B of the color display ring 120 abuts or is close to the outer peripheral surface of the fixed portion 25H, and the plate surface 120A of the color display ring 120 abuts on the rear end portion 25G of the rear axle 25. In this mounted state, a closed space 130 is formed by the rear end portion 25G of the rear axle 25, the fixed portion 25H, and the display inclined surface 124 of the color display ring 120. Since a part of the closed space 130 is thus constituted by the display inclined surface 124, the colored portion 122 provided on the display inclined surface 124 is located within the closed space 130. For this reason, the colored portion 122 provided on the display inclined surface 124 of the color display ring 120 cannot be touched by the user, and scratches, etc. are suppressed.

[0067] 11, notches 126 are formed at intervals in the circumferential direction on the outer circumferential portion 120C of the color display ring 120. Specifically, notches 126 are formed at intervals in the circumferential direction on the outer circumferential portion 120C of the color display ring 120. The notches 126 are formed in portions corresponding to the spaces between the indicator inclined surfaces 124 adjacent in the circumferential direction. When the crown 27 is attached to the rear axle 25, the edge portion 95 of the crown 27 is adapted to be inserted into the notches 126.

[0068] In addition, when the color display ring 120 is fitted to the rear end 25G of the rear axle 25, the outer periphery 120C protrudes to a position where it is flush with the outer periphery of the rear axle 25. Specifically, the outer diameter of the color display ring 120 is approximately the same as the outer diameter of the rear end 25G side of the rear axle 25. Here, as shown in FIG. 4A, the outer periphery 120C of the color display ring 120 protrudes outward from the portion of the rear end 25G where the guide slit 52 is formed. This protruding portion faces the surface protrusion 38 of the knock bar 30 in the axial direction. The portion of the plate surface 120A corresponding to this protruding portion is the external light introduction portion 128. As shown in FIG. 4B, the external light introduction portion 128 is configured to allow light to enter through the gap G. Here, when the knock bar 30 is pressed down, the gap G widens, and the light introduced from the external light introduction portion 128 also increases. The external light introduction portion 128 on the plate surface 120A is a portion separated from the display inclined surface . Therefore, the external light introduction portion 128 is not continuous with the closed space .

[0069] Next, the operation of this embodiment will be described. In the writing instrument 20, a colored portion 122 is provided on the radially inner portion of a light-transmitting color indicator ring 120 as an identification indicator for identifying the type of refill 22. Therefore, even when the color indicator ring 120 is viewed from the outside (radially outer side), the colored portion 122 provided on the radially inner portion can be visually recognized. In addition, since the colored portion 122 is provided on the radially inner portion of the color indicator ring 120, peeling of the colored portion 122 due to rubbing or the like can be suppressed even if the writing instrument 20 is used for a long period of time. This makes it possible for the writing instrument 20 to maintain the visibility of the colored portion 122 for a long period of time.

[0070] In addition, in the writing instrument 20, a colored portion 122 for identifying the type of refill 22 is provided on an indicating inclined surface 124 inclined with respect to the axis CL of the barrel 23 (a straight line SL parallel to the axis CL in FIG. 4B). This makes it easy to identify the type of refill 22 from the outside of the color indicating ring 120. Specifically, providing the colored portion 122 on the indicating inclined surface 124 improves visibility when the writing instrument 20 is viewed in the axial direction and radial direction. Furthermore, by providing the colored portion 122 on the indicating inclined surface 124 inclined with respect to the axis CL, the colored portion 122 can be easily provided on the indicating inclined surface 124 by spraying ink I toward the indicating inclined surface 124 from the direction of the axis CL.

[0071] Furthermore, in the writing instrument 20, the display inclined surface 124 constitutes the closed space 130 formed by the barrel 23 and the color display ring 120. Therefore, the visibility of the colored portion 122 provided on the display inclined surface 124 can be ensured by preventing foreign matter from entering the closed space 130.

[0072] Furthermore, in the writing instrument 20, the color display ring 120 is provided with the external light introduction section 128, so that the visibility of the colored section 122 can be ensured by the light introduced from the external light introduction section 128.

[0073] The writing implement is not limited to a ballpoint pen refill, but may be other types of refills, such as a mechanical pencil refill. [Explanation of symbols]

[0074] 20 Writing instruments 22 Refill 120 Color display ring (display component) 122 Coloring section 124 Display slope 128 External light introduction section 130 Confined Space CL axis

Claims

1. A barrel for accommodating a plurality of refills; A light-transmitting display member having a ring shape, which is fitted to the barrel and has an identification mark for identifying the type of the refill on a radially inner portion thereof; Equipped with The display member has an inclined display surface inclined with respect to an axis of the barrel, The identification mark is a colored portion provided on the inclined marking surface.

2. A barrel for accommodating a plurality of refills; A light-transmitting display member having a ring shape, which is fitted to the barrel and has an identification mark for identifying the type of the refill on a radially inner portion thereof; Equipped with The writing implement, wherein the display member is provided with an external light introducing portion.

Images