JP6559481B2 - Writing instrument - Google Patents

Description

  The present invention relates to a writing instrument that causes a pen tip of a writing body to appear and disappear from a front end of a shaft cylinder by pressing the clip in the axial direction forward (knock operation) with respect to the shaft cylinder.

  Conventionally, as one of the writing instruments, a knock member is provided behind the writing body supported in the shaft cylinder, and the knock member is pressed in the axial direction forward (knock operation) with respect to the shaft cylinder. A knock-type writing instrument is known in which a pen tip of a cursive body is projected and retracted from the front end of a cylinder.

  Generally, the knock member is provided so as to protrude from the rear end of the shaft cylinder. For example, in WO2011 / 096357A1 (Patent Document 1), a clip attached to the side surface of the shaft cylinder is used as the knock member. A writing instrument (side slide type writing instrument) that also works is proposed. In this case, since there is no knock member in the rear end region of the shaft tube, the rear end region does not move relative to the shaft tube in the axial direction. This enables a stable touch operation when a conductor for touch-operating the touch panel, for example, is attached to the rear end region of the barrel.

  In the writing instrument of Patent Document 1, as shown in FIGS. 10 and 11, in order to use the clip 207 as a knock member, a first region is provided in each of a rear region of the intermediate shaft 204 and a front region of the rear shaft 205. A long hole 244 and a second long hole 251 are provided. At the time of assembly, the base 272 of the clip 207 is inserted into the intermediate shaft 204 along the first long hole 244 from the opening at the rear end of the intermediate shaft 204. At the time of this insertion, the base 272 is arranged in the circumferential direction with respect to the intermediate shaft 204 so that the protrusions formed on the outer peripheral surface of the base 272 and the recesses formed on the inner peripheral surface of the intermediate shaft 204 are engaged. It needs to be positioned accurately. In a state where the base portion 272 is inserted into the intermediate shaft 204, the front end region of the rear shaft 205 is externally fitted to the rear end region of the intermediate shaft 204. At this time, the first long hole 244 and the second long hole 251 are connected to form one slide hole 221. The clip 207 can move relative to the shaft cylinder 202 in the slide hole 221 in the axial direction, and functions as a knock portion in cooperation with a cam mechanism provided in the intermediate shaft 204.

WO2011 / 096357A1 publication

  As described above, the writing instrument of the cited document 1 requires accurate positioning when the clip is attached to the shaft tube through the opening formed at the rear end of the shaft tube. There was a problem that it took.

  The present invention has been devised in view of the above problems. An object of the present invention is to provide a writing instrument capable of smoothly assembling a clip as a knock portion on a shaft cylinder when assembling a side slide type writing instrument.

  The present invention includes a shaft cylinder that accommodates the writing body, a slide hole that is provided on the side surface of the shaft cylinder so as to extend in the axial direction, and a slide portion that is slidably inserted in the slide hole in the axial direction. A knock part formed integrally with the slide part and protruding and retracting the writing body from a front end of the shaft cylinder; an operation part formed integrally with the slide part and exposed outside the slide hole of the shaft cylinder; The shaft cylinder is integrally provided with a rear end cylinder portion having an axial length of at least 1 mm on the rear side of the slide hole.

  According to the present invention, since the slide portion can be inserted into the rear region of the slide hole from the side surface of the shaft tube, when the writing tool is assembled, the slide portion can be easily positioned in the radial direction with respect to the shaft tube. Can be assembled to the shaft cylinder smoothly. Furthermore, since the shaft tube integrally has a rear end tube portion having an axial length of at least 1 mm on the rear side of the slide hole, the strength of the rear end region of the shaft tube can be increased.

  Preferably, the shaft tube is made of a conductive material, and a conductor is attached to a rear end region of the shaft tube.

  In this case, since the conductivity from the conductor to the operator's finger is ensured in a state where the operator holds the shaft tube, the touch operation of the touch panel is performed by bringing the conductor into contact with the touch panel in this state. be able to. Further, since the rear end region of the shaft tube is not a knock portion, the rear end region does not move in the axial direction with respect to the shaft tube, and a stable touch operation can be performed. Furthermore, since the strength of the rear end region of the shaft cylinder is increased, a good operational feeling can be realized during the touch operation.

  Preferably, the conductor is silicon rubber having conductivity. In this case, the conductor is elastically deformed moderately when a touch operation is performed on the touch panel, and thus a conductor having a good operational feeling can be provided.

  Preferably, the shaft cylinder has a guide portion extending in the axial direction on a peripheral wall surrounding the front region of the slide hole and extending in a thickness direction of the shaft cylinder, and the slide portion is formed on the peripheral wall. In the facing region, the guide portion has a guided portion that is slidably engaged with the guide portion in the axial direction, and the slide hole has a width in a rear region that is larger than a width of the slide portion excluding the guided portion. It is getting wider.

  In this case, the guided portion can be easily slidably engaged with the guide portion by inserting the slide portion into the rear region of the slide hole from the side surface of the axial tube and moving it relative to the axial tube forward in the axial direction. Can be made.

  According to the present invention, since the slide portion can be inserted into the rear region of the slide hole from the side surface of the shaft tube, when the writing tool is assembled, the slide portion can be easily positioned in the radial direction with respect to the shaft tube. Can be assembled to the shaft cylinder smoothly. Furthermore, since the shaft tube integrally has a rear end tube portion having an axial length of at least 1 mm on the rear side of the slide hole, the strength of the rear end region of the shaft tube can be increased.

It is a schematic side view of the writing instrument of one embodiment of the present invention. It is a schematic longitudinal cross-sectional view of the writing instrument of FIG. It is a schematic longitudinal cross-sectional view of the rear axis | shaft of the writing instrument of FIG. FIG. 4 is a sectional view taken along line AA in FIG. 3. FIG. 4 is a sectional view taken along line BB in FIG. 3. It is a schematic side view of the clip of the writing instrument of FIG. 7 is a schematic view of a rotating member of the writing instrument in FIG. 1, FIG. 7 (a) is a schematic bottom view of the rotating member, and FIG. 7 (b) is a schematic longitudinal sectional view of the rotating member. (C) is a schematic plan view of a rotating member. 8 is a schematic view of the pressing member of the writing instrument in FIG. 1, FIG. 8 (a) is a schematic bottom view of the pressing member, and FIG. 8 (b) is a schematic longitudinal sectional view of the pressing member. (C) is a schematic plan view of a pressing member. FIG. 9A is a schematic view of the crown of the writing instrument of FIG. 1, FIG. 9A is a schematic bottom view of the crown, FIG. 9B is a schematic side view of the crown, and FIG. These are CC sectional view taken on the line of FIG.9 (b). It is a schematic longitudinal cross-sectional view of the writing instrument of patent document 1. It is a schematic front view of the intermediate shaft and rear shaft of the writing instrument of FIG.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a schematic side view of a writing instrument 100 according to an embodiment of the present invention, and FIG. 2 is a schematic longitudinal sectional view of the writing instrument 100 of FIG. As shown in FIG.1 and FIG.2, the writing instrument 100 of this Embodiment was provided so that it might extend in the axial direction at the side surface of the axial cylinder 10 which accommodates the writing body 40, and the axial cylinder 10 (rear axis | shaft 20). The slide hole 21, the slide part 51 inserted in the slide hole 21 so as to be slidable in the axial direction, and the slide part 51 are integrally formed, and the writing body 40 is projected and retracted from the front end of the shaft cylinder 10 (front shaft 30). A shaft portion 52 as a knock portion and a clip body 55 as an operation portion that is formed integrally with the slide portion 51 and exposed to the outside of the slide hole 21 are provided. In the present embodiment, the clip 50 is configured by the slide portion 51, the shaft portion 52 and the clip body 55.

  The shaft tube 10 of the present embodiment is configured by screwing the rear end region of the front shaft 30 into the front end region of the rear shaft 20. The rear shaft 20 of the present embodiment is manufactured from polycarbonate mixed with carbon and has electrical conductivity.

  The writing body 40 according to the present embodiment includes an ink tank 43 filled with ink and a pen tip 42 fixed to the front end region of the ink tank 43. As the nib 42, for example, a metallic ballpoint pen tip having a rotatable ball at the front end can be adopted. The outer diameter of the ink tank 43 is larger than the outer diameter of the rear region of the pen tip 42, and a protruding portion 41 that protrudes radially outward is provided at the front end of the ink tank 43. A projecting portion 31 projecting from the inner peripheral surface of the front shaft 30 is provided in front of the projecting portion 41 in the axial direction. A coil spring 60 as a stretchable elastic body is disposed in a compressed state between the overhanging portion 41 and the protruding portion 31, and urges the writing body 40 axially rearward with respect to the front shaft 30. ing.

  As shown in FIG. 2, the slide portion 51 of the clip 50 is disposed behind the writing body 40 via a rotating member 71 and a pressing member 72 that are part of a cam mechanism 70 described later. . The slide portion 51 is urged rearward in the axial direction together with the writing body 40 via the rotating member 71 and the pressing member 72 by the urging force of the coil spring 60 described above.

  Next, FIG. 3 is a schematic longitudinal sectional view of the rear shaft 20 of the writing instrument 100 of FIG. 1, FIG. 4 is a sectional view taken along the line AA of FIG. 3, and FIG. FIG. As shown in FIGS. 3 to 5, the rear shaft 20 of the present embodiment has a reduced diameter portion 22 with a rear end region having a smaller diameter than other regions. A pedestal 23 for attaching conductive silicone rubber 90 is provided at the rear end of the reduced diameter portion 22. Further, a slide hole 21 that is an opening having a length of 17.75 mm extending in the axial direction is formed in a rear region on the side surface of the rear shaft 20. The slide hole 21 is provided with a rear region 21a, which is a region having a length of 6.2 mm in the rear in the axial direction, in the reduced diameter portion 22, and a front region 21b, which is a region having a length in the front in the axial direction, of 11.55 mm. It is provided in front of the reduced diameter portion 22 in the axial direction. In the present embodiment, the reduced diameter portion 22 integrally includes a rear end cylindrical portion 29 having an axial length of 2.4 mm on the rear side of the slide hole 21. The width of the slide hole 21 is 2.16 mm in the rear region 21a and 2.1 mm in the front region 21b. Further, a groove 24 of 27.75 mm is formed on the outer peripheral surface of the rear shaft 20 from the front end of the slide hole 21 toward the front in the axial direction.

  In the present embodiment, as shown in FIG. 4, the rear region 21 a of the slide hole 21 is gradually narrower toward the radially inner side of the rear shaft 20. On the other hand, as shown in FIG. 5, the front region 21 b of the slide hole 21 maintains substantially the same width toward the radially inner side of the rear shaft 20. Further, in the present embodiment, a guide groove 26 as a guide portion extending in the axial direction is provided on the peripheral wall 28 surrounding the front region 21b of the slide hole 21 and extending in the thickness direction of the rear shaft 20. Specifically, in the present embodiment, a peripheral wall 25 surrounding the rear region 21a and extending in the thickness direction of the rear shaft 20 extends axially forward to the vicinity of the front end portion of the front region 21b. Since the width on the outer side in the radial direction of the peripheral wall 25 is larger than the width of the peripheral wall 28 in the front region 21b, a guide groove 26 extending in the axial direction is formed by the peripheral wall 25. Further, as shown in FIGS. 4 and 5, on the inner peripheral surface of the rear shaft 20 including the reduced diameter portion 22, a guide extending in the axial direction at a position substantially half-circulated in the circumferential direction of the rear shaft 20 from the slide hole 21. A groove 26a is formed.

  Further, as shown in FIG. 3, the rear shaft 20 has a cam main body 27 on the inner peripheral surface in the axial direction forward of the reduced diameter portion 22. The cam main body 27 of the present embodiment is configured by alternately arranging a plurality of cam teeth 27a and cam grooves 27b extending in the axial direction along the circumferential direction. The cam main body 27 cooperates with a rotation member 71 and a pressing member 72 described later, and the pen tip 42 of the writing body 40 projects from the front end of the shaft tube 10 (front shaft 30). A state in which the pen tip 42 is immersed in the shaft cylinder 10 (front shaft 30) is alternately realized.

  Next, FIG. 6 is a schematic side view of the clip 50 of the writing instrument 100 of FIG. 7 is a schematic view of the rotating member 71 of the writing instrument 100 of FIG. 1, FIG. 7A is a schematic bottom view of the rotating member 71, and FIG. 7B is a schematic view of the rotating member 71. FIG. 7C is a longitudinal sectional view, and FIG. 7C is a schematic plan view of the rotating member. 8 is a schematic view of the pressing member 72 of the writing instrument 100 of FIG. 1, FIG. 8 (a) is a schematic bottom view of the pressing member 72, and FIG. 8 (b) is an outline of the pressing member 72. FIG. 8C is a schematic plan view of the pressing member 72.

  As shown in FIG. 6, the clip 50 of the present embodiment is made of resin, and includes a clip main body 55 that extends in the axial direction, a slide portion 51 that is integrally formed in a rear region of the clip main body 55, and a slide portion. And a shaft portion 52 as a knock portion, which is integrally formed on the front side of 51 in the axial direction (leftward in FIG. 6) and has an engaging portion 54 in the front end region. The clip main body 55 is integrally formed with a ball portion 56 on the side facing the shaft cylinder 10 (rear shaft 20) (lower side in FIG. 6). The ball portion 56 is movable relative to the shaft cylinder 10 (rear shaft 20) in the axial direction in the groove 24 provided on the outer peripheral surface of the rear shaft 20, and is sandwiched between the groove 24. Things can be pinched.

  Further, the slide portion 51 has a ridge 53 as a guided portion extending in the axial direction on the side surfaces (front surface and back surface in FIG. 6). By being slidably engaged with the guide groove 26, the clip 50 can be moved relative to the rear shaft 20 in the axial direction. Further, the guide portion 51 has a protrusion 57 at the end opposite to the side on which the clip main body 55 is integrally formed (the lower side in FIG. 6). The guide groove 26a is slidably engaged.

  In the present embodiment, a rotating member 71 and a pressing member 72 are attached to the shaft portion 52 (see FIG. 2), and the cam mechanism 70 is configured by the pressing member 72, the rotating member 71, and the cam main body 27. ing.

  Specifically, the rotating member 71 is made of, for example, polyacetal resin, and can be alternately engaged with the cam teeth 27a or the cam grooves 27b of the cam body 27 on the outer peripheral surface as shown in FIG. Two protrusions 73 are provided at equal intervals in the circumferential direction, and a plurality of cam teeth 74 are provided in the rear end region as shown in FIGS. 7B and 7C. In addition, a through hole 75 is formed in the rotating member 71 in the axial direction (the depth direction in FIGS. 7A and 7C and the left-right direction in FIG. 7B), and the inner peripheral surface. An engaging portion 76 that protrudes radially inward is provided in a part of the axial direction.

  Further, the pressing member 72 of the present embodiment is made of, for example, polyacetal resin. As shown in FIGS. 8A and 8C, the pressing member 72 is axially formed in the cam groove 27b of the cam main body 27 on the outer peripheral surface. Six ridges 77 that are slidably engaged are formed at equal intervals in the circumferential direction, and a plurality of pressing surfaces 78 are provided in the front end region as shown in FIGS. have. Further, a through hole 79 is formed in the pressing member 72 in the axial direction (the depth direction in FIGS. 8A and 8C and the left-right direction in FIG. 8B).

  Returning to FIG. 2, in the present embodiment, the pressing member 72 and the rotating member 71 are externally fitted in this order toward the axially forward portion of the shaft portion 52 of the clip 50. Furthermore, the engaged portion 76 of the rotating member 71 is engaged with the engaging portion 54 of the shaft portion 52, thereby preventing the rotating member 71 and the pressing member 72 from falling off from the shaft portion 52. Yes.

  Further, in the present embodiment, as shown in FIG. 2, a dome-shaped silicon rubber 90 having conductivity as a conductor is externally fitted to the base 23 of the rear shaft 20. Further, a resin-made cylindrical head crown 80 is externally fitted to the reduced diameter portion 22 so as to surround the front region of the silicon rubber 90 and the reduced diameter portion 22 of the rear shaft 20.

  A schematic diagram of the crown 80 of the present embodiment is shown in FIG. 9 (a) is a schematic bottom view of the crown 80, FIG. 9 (b) is a schematic side view of the crown 80, and FIG. 9 (c) is a cross-sectional view taken along CC of FIG. 9 (b). It is line sectional drawing. As shown in FIG. 9B, the crown 80 of the present embodiment has a notch 81 having a width of 2.2 mm and a length of 4.8 mm in the front region in a part in the circumferential direction. Further, the outer diameter of the rear region of the head crown 80 is substantially the same as the outer diameter of the rear shaft 20 in the axial direction forward of the reduced diameter portion 22. The head crown 80 has an engaged portion 82 extending in the circumferential direction in a part of the inner circumferential surface in the axial direction, and this engaged portion 82 is one of the axial directions of the outer circumferential surface of the reduced diameter portion 22. It is possible to engage with an engaging portion 22a (see FIGS. 2 and 3) extending in the circumferential direction at the portion. By this engagement, the crown 80 is fixed to the reduced diameter portion 22.

  Furthermore, the head crown 80 has a plurality of recesses 83 extending in the axial direction on the inner peripheral surface. On the other hand, the reduced diameter portion 22 has a plurality of protrusions 22b extending in the axial direction on the outer peripheral surface, and the circumference of the crown 80 with respect to the reduced diameter portion 22 by the engagement between the recess 83 and the protrusion 22b. In addition to positioning in the direction, when the crown 80 is fixed to the reduced diameter portion 22, relative rotation around the axis of the reduced diameter portion 22 of the crown 80 is prevented. In the present embodiment, the notch 81 of the crown 80 and the front region 21 b of the slide hole 21 are connected in a state where the crown 80 is attached to the reduced diameter portion 22. Furthermore, the width of the notch 81 of the head crown 80 is formed to be narrower than the width of the protrusion 53 of the slide portion 51. For this reason, the crown portion 80 is fixed to the reduced diameter portion 22 in a state where the slide portion 51 is inserted into the slide hole 21, so that the slide portion 51 does not fall out of the slide hole 21.

  Next, a method for assembling the writing instrument 100 according to the present embodiment will be described.

  First, the slide portion 51 of the clip 50 is inserted into the slide hole 21 from the side surface of the rear shaft 20. At this time, the protrusion 57 of the slide part 51 is engaged with the guide groove 26a of the rear shaft 20. For example, in a state where the opening at the front end of the rear shaft 20 is directed upward, the pressing member 72 and the rotating member 71 are arranged in this order through the opening using the appropriate auxiliary tool as necessary. And is fitted on the shaft portion 52 of the slide portion 51. At this time, the protrusion 77 of the pressing member 72 is engaged with the cam groove 27 b of the cam main body 27 formed on the inner peripheral surface of the rear shaft 20. Then, when the rotating member 71 is pressed axially rearward (downward) with respect to the shaft portion 52, the engaged portion 76 of the rotating member 71 is engaged with the engaging portion 54 of the shaft portion 52. This prevents the rotating member 71 and the pressing member 72 from coming off from the shaft portion 52.

  Then, the writing body 40 is inserted into the rear shaft 20 so that the rear end of the writing body 40 contacts the front end of the rotating member 71. The coil spring 60 is disposed so as to surround the pen tip 42 of the writing body 40. At this time, the rear end of the coil spring 60 is brought into contact with the overhanging portion 41 of the writing body 40. In this state, the male thread portion formed on the outer peripheral surface of the rear end region of the front shaft 30 is screwed to the female screw portion formed on the inner peripheral surface of the front end region of the rear shaft 20, and the front shaft 30 is attached to the rear shaft 20. It is fixed against. Thereby, the front region of the writing body 40 and the coil spring 60 are accommodated in the front shaft 30. At this time, the front end of the coil spring 60 is brought into contact with the protruding portion 31 protruding from the inner peripheral surface of the front shaft 30. In the present embodiment, in the state where the front shaft 30 is fixed (screwed) to the rear shaft 20, the separation distance between the protruding portion 41 and the protruding portion 31 is shorter than the natural length of the coil spring 60. ing. For this reason, the coil spring 60 is arrange | positioned between the overhang | projection part 41 and the protrusion part 31 in the compression state. That is, the writing body 40 is urged rearward in the axial direction with respect to the front shaft 30 by the urging force of the coil spring 60.

  For example, the rear end of the rear shaft 20 is directed upward, and the conductive silicon rubber 90 is fitted on the pedestal 23 of the rear shaft 20. Then, the crown 80 is fitted around the reduced diameter portion 22 so as to surround the front region of the silicon rubber 90 and the reduced diameter portion 22 of the rear shaft 20. At this time, the crown 80 is positioned in the circumferential direction of the crown 80 with respect to the reduced diameter portion 22 by the engagement of the recesses of the crown 80 and the protrusions 22b of the reduced diameter portion 22, and the crown 80 becomes the reduced diameter portion 22. When fixed, relative rotation around the axis with respect to the reduced diameter portion 22 of the crown 80 is prevented. At this time, the slide portion 51 is slightly moved relative to the rear shaft 20 in the axial direction by the rear end of the notch 81 of the crown 80, so that the front end region of the protrusion 53 of the slide portion 51 is the rear shaft 20. The guide groove 26 is engaged.

  Next, the operation of the writing instrument 100 of the present embodiment will be described.

  In the initial state of the writing instrument 100, the nib 42 of the writing body 40 is immersed in the shaft cylinder 10 (front shaft 30), and the protrusion 77 of the pressing member 72 positioned in front of the slide portion 51 of the clip 50 is provided. The rear end is in contact with the stepped portion of the rear end of the cam groove 27b by the biasing force of the coil spring 60 (see FIGS. 2 and 3).

  When writing on the paper surface using the writing instrument 100, first, the shaft cylinder 10 is gripped by the user, and the clip 50 is pressed forward in the axial direction against the shaft cylinder 10 against the urging force of the coil spring 60 ( Knock operation). At this time, since the ridges 53 and 57 of the slide portion 51 are slid in the axial direction along the guide grooves 26 and 26a of the rear shaft 20, rattling of the clip 50 during the pressing operation is suppressed. By this pressing operation, the cam teeth 74 of the rotating member 71 fitted on the shaft portion 52 are pressed by the pressing surface 78 of the pressing member 72 and are relatively moved forward in the axial direction with respect to the shaft tube 10. Accordingly, the pen tip 42 of the writing body 40 is exposed from the front end of the front shaft 30. When the rear end of the ridge 73 of the rotating member 71 is relatively moved axially forward from the front end of the cam groove 27b, the pressing surface 78 of the pressing member 72 and the cam teeth 74 of the rotating member 71 come into contact with each other. The rotating member 71 is rotated by a certain angle with respect to the cam main body 27. When the pressing force applied to the clip 50 is weakened, the urging force of the coil spring 60 moves the rotating member 71 together with the writing body 40 in the axially rearward direction with respect to the axial tube 10. In the middle of this relative movement, the protrusion 73 of the rotating member 71 is engaged with the cam teeth 27a of the cam main body 27, so that the state where the pen tip 42 protrudes from the tip of the shaft cylinder 10 (front shaft 30) is maintained. Is done. Then, the front shaft 30 is gripped by the user, and writing is performed by moving the shaft tube 10 as desired with respect to the paper surface.

  Next, in a state where the nib 42 protrudes from the tip of the shaft cylinder 10 (front shaft 30), the clip 50 opposes the urging force of the coil spring 60 and pushes the shaft cylinder 10 forward in the axial direction (knock operation). ), The pen tip 42 is immersed in the shaft cylinder 10 (front shaft 30). Specifically, by the pressing operation of the clip 50, the cam teeth 74 of the rotating member 71 fitted on the shaft portion 52 are pressed by the pressing surface 78 of the pressing member 72, and are axially forward with respect to the shaft cylinder 10. It is moved relative. Then, when the rear end of the protrusion 73 of the rotating member 71 is relatively moved axially forward from the front end of the cam tooth 27a, the engagement between the protrusion 73 and the cam tooth 27a is released, and the pressing member 72 is pressed. The rotating member 71 is rotated by a certain angle with respect to the cam main body 27 by the contact between the surface 78 and the cam teeth 74 of the rotating member 71. When the pressing force applied to the clip 50 is weakened, the rotating member 71 is moved relative to the cam main body 27 in the axially rear direction together with the writing body 40 by the biasing force of the coil spring 60. At this time, the protrusion 73 of the rotating member 71 is guided by the cam groove 27b and moved rearward in the axial direction, so that the pen tip 42 is immersed in the shaft cylinder 10 (front shaft 30).

  The writing instrument 100 of the present embodiment can also be used to operate a capacitive touch panel such as a tablet terminal. In this case, the rear shaft 20 is gripped by the user and the touch panel is touch-operated as desired with the conductive silicone rubber 90 attached to the rear end region of the shaft tube 10 directed toward the touch panel to be operated. . During this touch operation, current is supplied from the touch panel to be operated to the user's finger through the silicon rubber 90 and the rear shaft 20, so that the same operation as when the touch panel is operated with the finger is realized.

  According to the present embodiment as described above, since the slide portion 51 can be inserted into the rear region 21a of the slide hole 21 from the side surface of the shaft cylinder 10 (rear shaft 20), the slide portion 51 is assembled when the writing instrument 100 is assembled. Positioning of the 51 in the radial direction with respect to the shaft cylinder 10 is easy, and the slide portion 51 can be smoothly assembled to the shaft cylinder 10 (rear shaft 20). Further, since the shaft tube 10 (reduced diameter portion 22) integrally includes a rear end tube portion 29 having an axial length of 2.4 mm on the rear side of the slide hole 21, the rear end of the rear shaft 20 is provided. The strength of the region can be increased.

  The rear shaft 20 is made of a conductive material, and a conductive silicon rubber 90 is attached to the rear end region of the rear shaft 20. For this reason, the conductivity from the silicon rubber 90 to the operator's finger can be ensured in a state where the operator grips the shaft tube 10, and the touch operation of the touch panel can be performed by bringing the silicon rubber 90 into contact with the touch panel in this state. It can be carried out. Further, since the rear end region of the shaft tube 10 is not a knock portion, the rear end region does not move in the axial direction with respect to the shaft tube 10, and a stable touch operation can be performed. Furthermore, since the strength of the rear end region of the rear shaft 20 is increased, a good operational feeling can be realized during the touch operation.

  The shaft cylinder 10 has a protrusion 53 extending in the axial direction on the peripheral wall 28 surrounding the front region of the slide hole 21 and extending in the thickness direction of the shaft cylinder 10, and the slide portion 51 is formed on the peripheral wall 28. The facing area has a guide groove 26 that is slidably engaged with the protrusion 53 in the axial direction. The slide hole is 21, and the width of the rear area is wider than the width of the slide portion 51 excluding the protrusion 53. It has become. For this reason, by inserting the slide portion 51 into the rear region of the slide hole 21 from the side surface of the shaft tube 10 and moving it relative to the shaft tube 10 in the axial direction, the protrusion 53 can be easily formed in the guide groove 26. It can be slidably engaged.

10 shaft cylinder 20 rear shaft 21 slide hole 21a rear region 21b front region 22 reduced diameter portion 22a engaging portion 22b protrusion 23 pedestal 24 groove 25 peripheral wall 26 guide groove 26a guide groove 27 cam body portion 27a cam tooth 27b cam groove 28 peripheral wall 29 Rear end cylinder part 30 Front shaft 31 Projection part 40 Writing body 41 Overhang part 42 Pen tip 43 Ink tank 50 Clip 51 Slide part 52 Shaft part 53 Projection part 54 Engagement part 55 Clip body 56 Ball part 57 Projection part 60 Coil spring 70 Cam mechanism 71 Rotating member 72 Press member 73 Projection 74 Cam tooth 75 Through hole 76 Engagement portion 77 Projection 78 Press surface 79 Through hole 80 Crown 81 Notch 82 Engagement portion 83 Concave 90 Silicon rubber 100 Writing instrument

Claims (3)

A barrel that houses the cursive,
A slide hole provided on the side surface of the shaft tube so as to extend in the axial direction;
A slide portion that is slidably inserted in the slide hole in the axial direction;
A knock part that is formed integrally with the slide part and causes the writing body to protrude from the front end of the shaft cylinder;
An operation part that is formed integrally with the slide part and exposed to the outside of the slide hole of the shaft cylinder;
With
The shaft tube integrally has a rear end tube portion having an axial length of at least 1 mm on the rear side of the slide hole ,
The shaft cylinder has a guide groove extending in the axial direction on a peripheral wall surrounding the front region of the slide hole and extending in the thickness direction of the shaft cylinder.
The writing instrument according to claim 1, wherein the slide portion has a protrusion that engages with the guide groove so as to be axially slidable in a region facing the peripheral wall . The shaft tube is made of a conductive material,
The writing instrument according to claim 1, wherein a conductor is attached to a rear end region of the shaft tube. The writing instrument according to claim 2, wherein the conductor is silicon rubber having conductivity.

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