JP2014136395A - Retractable writing instrument with clip switching operation function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a clip body from rattling in a direction crossing a barrel axial direction.SOLUTION: A retractable writing instrument comprises: a barrel 10; a slide body 21 which advances and retreats between an advance position and a retreat position along the barrel 10; a clip body 22 which is supported by the slide body 21 and exposed to the outside of the barrel; and a writing part 41 which is projected and retracted in accordance with advancing/retreating of the slide body 21. The retractable writing instrument includes a clip opening/closing operation function in which a portion of the clip body 22 located frontward of a supporting point P of the slide body 21 is detached and opened from the barrel 10 by pressing a portion of the clip body 22 located backward of the supporting point P in an inner diameter direction of the barrel. When the clip body 22 is opened in the retreat position, the portion of the clip body 22 located backward of the supporting point P is engaged with the barrel 10 in a concave-convex manner.

Description

  The present invention relates to a retractable writing instrument with a clip opening / closing operation function that causes a writing part such as a refill for a ballpoint pen or a refill for a mechanical pencil to appear and retract by an operation of moving a clip that can be opened and closed.

Conventionally, this type of writing instrument includes, for example, a shaft cylinder (10) and a slide body (pushing element) that moves forward and backward between the advance position and the retract position along the axis cylinder, as described in Patent Document 1, for example. 42), a clip body (clip body 41) supported by the slide body and exposed to the outside of the shaft cylinder, and a writing section (21) which appears and disappears by the advancement and retraction of the slide body, the slide body in the clip body A clip opening / closing operation in which a portion of the clip body, which is further to the front side than the support point, is separated from the shaft tube by being pushed inwardly in the shaft tube diameter direction. There is an in / out type writing instrument with an operation function.
Such a retractable writing instrument with a clip opening / closing operation function can largely open the front end side of the clip body by gripping the rear end side of the clip body and the shaft cylinder with fingers. A thick board or clothing can be sandwiched between them, and the usability is very good.

  However, in the conventional writing tool with a clip opening / closing operation function, when the clip body and the rear end side of the shaft tube are gripped with fingers, the clip body is in the width direction of the clip, the shaft tube circumferential direction, etc. There is a risk of rattling in a direction that intersects the axial direction of the cylinder.

JP 2008-49709 A

  The present invention has been made in view of the above-described conventional circumstances, and a problem to be solved by the present invention is a retractable writing instrument with a clip opening / closing operation function capable of preventing the clip body from rattling in a direction intersecting the axial direction of the shaft cylinder. Is to provide.

  One means for solving the above problems is a shaft cylinder, a slide body that moves back and forth between the advance position and the retreat position along the shaft cylinder, and a clip that is supported by the slide body and exposed outside the shaft cylinder. A clip and a writing part that appears and retreats as the slide body advances and retreats, and a portion of the clip body that is behind the support point of the slide body is pushed inwardly in the axial direction of the shaft. In a retractable writing instrument with a clip opening / closing operation function, wherein a portion of the body in front of the support point is separated from the shaft cylinder and opened, the clip body is opened as the clip body is opened at the retracted position. The portion on the rear side of the support point in the step is fitted to the shaft tube in a concavo-convex shape.

  Since this invention is comprised as demonstrated above, it can prevent that a clip body rattles in the direction which cross | intersects with a shaft cylinder axial direction.

It is a side view of the retractable writing instrument of this Embodiment, The front end side is notched and the internal structure is shown. It is a rear side sectional view of the writing tool and shows the state where the clip body is closed at the retracted position. It is a rear side sectional view of the same retractable writing instrument, and shows a state in which the clip body is in the forward movement position. It is a rear side sectional view of the same writing and writing type writing instrument and shows a state in which the clip body is opened at the retracted position. FIG. 3 is an end view taken along line (V)-(V) in FIG. 2, (a) is a state in which the front end side of the clip body is closed, and (b) is a rear end side by opening the front end side of the clip body. Indicates a closed state. The structure inside the shaft cylinder is omitted. It is a top view which shows an example of the rear part side shape of a shaft cylinder. An example of the rear part side shape of a shaft cylinder is shown, and the side surface with respect to FIG. 6 is shown. An example of the rear part side shape of a shaft cylinder is shown, and the surface on the opposite side to FIG. 6 is shown. The figure seen from the back of a shaft cylinder is shown. It is sectional drawing which follows the (X)-(X) line | wire of FIG. FIG. 11A is an end view taken along line (XI-I)-(XI-I) in FIG. 10, and FIG. 11B is an end view taken along line (XI-II)-(XI-II) in FIG. FIG. 11 is an end view taken along line (XII)-(XII) in FIG. 10. It is a top view which shows an example of a clip body. It is a side view of the clip body. It is sectional drawing which follows the (XV)-(XV) line | wire of FIG. FIG. 16 is an end view taken along line (XVI)-(XVI) in FIG. 15. It is a side view which shows an example of a pusher. It is a longitudinal cross-sectional view of the same presser. FIG. 19 is an end view taken along line (XIX)-(XIX) in FIG. 18. FIG. 19 is an end view taken along line (XX)-(XX) in FIG. 18. It is a side view which shows an example of an identification part. It is the figure (right view with respect to FIG. 21) which looked at the identification part from back. It is a bottom view with respect to FIG. FIG. 15 is an end view taken along the line (XXIV)-(XXIV) in FIG. 14 and shows a state in which the identification portion is being removed by a jig. FIG. 18 is an end view taken along line (XXV)-(XXV) in FIG. 17, showing a state in which the identification portion is being removed by a jig. It is a rear side sectional view showing the retractable writing instrument of the second embodiment. It is a rear side top view which shows the axial cylinder in the retractable writing instrument of 2nd embodiment. FIG. 28 is an end view taken along the line (XXVIII)-(XXVIII) in FIG. 27, and the internal structure is omitted. It is the rear sectional view and back end figure showing the retractable writing instrument of a third embodiment, (a) shows the state where the clip body was opened, and (b) shows the state where the clip body was closed.

The first feature of the present embodiment is that the shaft tube, a slide body that moves forward and backward along the shaft tube, and a clip that is supported by the slide body and is exposed outside the shaft tube. A clip and a writing part that appears and retreats as the slide body advances and retreats, and a portion of the clip body that is behind the support point of the slide body is pushed inwardly in the axial direction of the shaft. In a retractable writing instrument with a clip opening / closing operation function, wherein a portion of the body in front of the support point is separated from the shaft cylinder and opened, the clip body is opened as the clip body is opened at the retracted position. The portion on the rear side of the support point in the step was fitted to the shaft tube in an uneven shape.
According to this configuration, when the clip body is opened at the retracted position, the rear end side portion of the clip body fits in an uneven shape with respect to the shaft tube. Therefore, it is possible to prevent the clip body from rattling in a direction intersecting the axial direction of the axial cylinder, such as the axial direction of the axial cylinder and the clip width direction in the opened state.

As a second feature, a portion of the clip body on the rear side of the support point fits in an uneven shape away from the shaft tube as the clip body closes from the open state at the retracted position. It is configured so that it is not in the state.
According to this configuration, when the clip body is closed from the open state, the uneven fitting on the rear end side of the clip is released. Therefore, it is possible to prevent a frictional resistance from being generated by the portion that fits in the uneven shape, and the clip body can be smoothly advanced and retracted and rotated.

As a third feature, on the back surface behind the support point in the clip body, there are provided two projecting pieces spaced apart in the clip width direction and continuous in the front-rear direction, and the rear end side of the shaft cylinder Is provided with a convex portion that fits inside the two protruding piece portions, and the two protruding piece portions and the convex portion constitute the uneven fitting.
According to this configuration, when the clip body is opened, since the convex portion fits between the two projecting piece portions of the clip body, it is possible to effectively prevent rattling in the cross direction with respect to the axial direction of the shaft cylinder. be able to.

As a fourth feature, on the outer peripheral surface of the shaft cylinder, on both sides sandwiching the convex portion in the clip width direction, inclined surfaces that incline in the axial cylinder diameter direction toward the rear are formed, and the clip body includes the two The convex portion is fitted between the projecting piece portions, and the projecting ends of the two projecting piece portions are brought into contact with the inclined surface.
According to this configuration, when the clip body is opened, the projecting portion fits between the two projecting piece portions of the clip body, and the two projecting piece portions contact the inclined surface of the rear end of the shaft tube. Further, it is possible to effectively prevent rattling in the crossing direction with respect to the axial direction of the shaft cylinder, and it is also possible to prevent the clip body in the open state from sliding forward or rattling back and forth.

  In addition, in this specification, a shaft cylinder axial direction means the direction where the centerline of a shaft cylinder extends. “Front” means one side of the axial direction of the cylinder and the tip direction of the writing portion. Further, “rear” means a direction opposite to the one side in the axial direction of the shaft cylinder. The “axial cylinder radial direction” means a direction orthogonal to the axial cylinder axis direction. In addition, the “outward direction of the shaft cylinder” or the “centrifugal direction of the shaft cylinder” means a direction away from the center of the shaft cylinder along the shaft cylinder diameter direction. The “inner cylinder diameter inward direction” or “axial cylinder centripetal direction” means a direction approaching the axial cylinder center along the axial cylinder radial direction. The “clip width direction” means a direction that is orthogonal to the front-rear direction of the clip and not the thickness direction of the clip.

  Next, a preferred specific example of the present embodiment having the above features will be described in detail with reference to the drawings.

As shown in FIGS. 1 to 25, the retractable writing instrument 1 is exposed to the outside of the shaft cylinder from a substantially cylindrical shaft cylinder 10 having guide holes 12 a and 12 b extending in the front-rear direction on the peripheral wall, and the guide holes 12 a and 12 b. A multi-function (multicolor) writing instrument comprising a plurality of pressers 20 and 30 and a mechanical pencil refill 40 and a ballpoint pen refill 50 that are detachably attached to the pressers 20 and 30.
When the selected pusher 20 (or 30) is advanced from the retracted position to the advanced position, the retractable writing instrument 1 is a writing unit 41 (or 51) corresponding to the pusher 20 (or 30). , And the presser 20 (or 30) is sunk inside the shaft tube to be locked to the locking portion 12c2 (or 12d2). Further, the retractable writing instrument 1 releases the locked state by a predetermined releasing operation (an operation to advance the other presser 30 (or 20) according to the illustrated example), and the pusher 20 ( Or, 30) is retracted and the writing unit 41 (or 51) is immersed.
The in / out writing instrument 1 is configured as an in / out writing instrument with a clip opening / closing operation function that can also be used as a clip capable of opening / closing one pusher 20.

If each component is explained in detail, first, the shaft cylinder 10 is a long cylindrical member formed by detachably connecting the rear shaft 12 to the front shaft 11, and the entire length in the axial direction is the whole. There are no protrusions on the outer peripheral surface that protrude more outward than the outer diameter surface 10a.
As shown in FIGS. 1 to 4, a mechanical pencil refill 40 and a ballpoint pen refill 50, refill guide members 61 for guiding the refills 40 and 50 in the axial direction, respectively, An urging member 62 (compression spring according to the illustrated example) that urges the refills 40 and 50 rearward, a slide body 21 that is connected to the rear end of the mechanical pencil refill 40 and constitutes the pusher 20, and a ballpoint pen A pusher 30 and the like connected to the rear end of the refill 50 are provided.

  1 to 4 show examples in which only one mechanical pencil refill 40 and one ballpoint pen refill 50 are provided in order to clearly show the basic structure of the retractable writing instrument 1. The number of refills can be singular or plural, and the specific examples of FIGS. 6 to 12 show the shaft cylinder 10 in which one mechanical pencil refill 40 and four ballpoint pen refills 50 can be contained. .

  The front shaft 11 is a substantially cylindrical member having an opening portion 11a for allowing the writing portions 41 and 51 to appear and disappear at the front end portion, and is detachably screwed to the rear shaft 12.

The rear shaft 12 is a substantially long cylindrical member that does not have a protruding portion on the outer periphery. The rear shaft 12 has an outer peripheral surface formed in an inclined surface shape that is slightly inclined toward the center of the shaft cylinder toward the rear, and the inclination angle is such that transfer printing on the outer peripheral surface can be easily performed. Set to In order to make transfer printing easier, the rear shaft 12 may be formed to have the same diameter over the entire length.
The rear shaft 12 has guide holes 12a and 12b for guiding the pressers 20 and 30 in the axial direction of the axial cylinder on the peripheral wall on the rear end side. In addition, a cylindrical slide body 12c separate from the rear shaft 12 is provided in the rear shaft 12 (see FIGS. 2 to 4).

Of the plurality of guide holes 12a, 12b, one guide hole 12a guides the pusher 20 constituting the clip with an opening / closing function, and the other guide hole 12b is a pusher corresponding to the refill 50 for the ballpoint pen. 30 (see FIGS. 2 to 4).
The one guide hole 12a is a long through hole that continues in the front-rear direction, and has two edge portions arranged in two straight lines substantially parallel to both sides in the axial direction (in the vertical direction in FIG. 6). A first edge 12a1 on the part side, a second edge 12a2 continuous to the rear side of the first edge 12a1, and a third edge 12a3 continuous to the rear side of the second edge 12a2. It is composed.

The 1st edge 12a1 is provided in the predetermined range ahead of the 2nd edge 12a2 (refer FIG.6 and FIG.7). The first edge portion 12a1 is formed in a flat surface shape that is recessed from a virtual outer diameter surface 10x (see FIG. 11A) in which the shaft cylinder outer diameter surface 10a is continuous in the circumferential direction toward the guide hole 12a. Yes.
The length of the first edge portion 12a1 in the axial direction is such that the pusher 20 moves forward along the second edge portion 12a2 and then sinks into the inner side of the axial tube so that the lead core is advanced and retracted. Is set appropriately.

  The second edge portion 12a2 is an edge portion protruding in the radially outward direction from the first edge portion 12a1 within a range not exceeding the virtual outer diameter surface 10x in the radially outward direction. According to the illustrated example, the second edge portion 12a2 is a crossing portion between the outer diameter surface 10a of the shaft cylinder and the inner surface of the guide hole 12a, and is substantially the same diameter as the virtual outer diameter surface 10x (FIG. 11 ( b)).

  The third edge portion 12a3 includes an inclined surface 12e that inclines in the axial tube diameter inward from the second edge portion 12a2 toward the rear in a predetermined range on the outer peripheral surface of the shaft tube 10 from the second edge portion 12a2. This is the intersection between the inclined surface 12e and the inner surface of the guide hole 12a (see FIG. 6).

The inclined surface 12e is a flat inclined surface disposed on the rear end side of the outer peripheral surface of the shaft tube 10, and when the clip body 22 constituting the pusher 20 is opened (see FIG. 4), the clip The rear end side of the body 22 is received.
Further, the inclined surface 12e is provided on both sides in the axial direction of the shaft cylinder so as to sandwich a rear side of the guide hole 12a and a convex portion 12f described later. Between the two inclined surfaces 12e, 12e, a convex portion 12f that fits in a concavo-convex shape with respect to the rear end side of the clip body 22 is provided in a portion on the rear side of the guide hole 12a (see FIG. 6). )

  The convex portion 12f is formed so as to protrude in the radially outward direction from the inclined surface 12e in a range that does not become larger than the outer diameter surface 10b (see FIG. 6) in the range having the inclined surface 12e in the shaft cylinder 10. The protruding amount of the projecting portion 12f fits to the rear end side of the clip body 22 when the clip body 22 is opened, and detaches from the rear end side of the clip body 22 when the clip body 22 is closed. Is set to

  The other guide hole 12b is a long through hole that is substantially the same length as the guide hole 12a and narrower than the guide hole 12a, and is continuous in the front-rear direction.

The cylindrical slide body 12c is inserted on the rear end side in the rear shaft 12, and a knock portion 13 is fitted to a portion protruding rearward from the shaft tube 10 (see FIG. 2). The cylindrical slide body 12c is advanced and retracted in the front-rear direction by a knocking operation of the knock portion 13 protruding rearward of the rear shaft 12, and the mechanical pencil refill 40 is fed out. The lead lead from the mechanical pencil refill 40 includes an operation for moving the pusher 20 forward and backward when the pusher 20 that is a clip with an opening / closing operation function is at a forward position, and an operation for knocking the knock portion 13. It is possible by any of the selection operations.
On the peripheral wall of the cylindrical slide body 12c, the flat slide surface 12c1, 12d1 that receives the pusher 20, 30 so as to be slidable back and forth, and the pusher 20, when moving forward along the slide surface 12c1, 12d1, Stepped locking portions 12c2, 12d2 and the like for locking 30 by sinking into the inner side of the shaft cylinder are provided.

  The pusher 20 fits into the guide hole 12a and can move forward and backward, a clip body 22 supported by the slide body 21 and exposed to the outside of the shaft cylinder, and urges the clip body 22 in the closing direction. And a discriminating part 24 that is attached to the clip body 22 so as to be detachable and replaceable. A portion of the clip body 22 behind the support point P with respect to the slide body 21 is inwardly in the axial direction The clip with the opening / closing operation function is configured to be opened by separating the portion of the clip body 22 in front of the support point P from the outer peripheral surface of the shaft cylinder.

The slide body 21 is formed to slide back and forth along the guide hole 12a. The slide body 21 includes a locked portion 21a that is locked to the locking portion 12c2 in the guide hole 12a, and a support convex portion 21b that protrudes in the outer diameter direction of the shaft cylinder and rotatably supports the clip body 22. A refill connection portion 21c for connecting the mechanical pencil refill 40 is provided.
The support protrusion 21b supports the clip body 22 so as to rotate about the support point P. The support structure may be, for example, a bearing structure with a shaft and a hole, a bearing structure with a convex part and a concave part, or another bearing structure.

The clip body 22 includes a front portion 22a extending forward substantially parallel to the outer peripheral surface of the shaft tube 10, and two protruding toward the shaft tube side on both sides in the width direction (vertical direction in FIG. 13) of the surface portion 22a. The protrusions 22b and 22b are formed in a substantially concave cross section.
The clip body 22 has two projecting portions 22b and 22b supported by the support convex portion 21b of the slide body 21, and rotates around the support point P.

The front portion 22a is provided with a fitted portion 22a1 for fitting the identification portion 24 so as to be attachable / detachable (see FIG. 15).
The fitted portion 22a1 is positioned in the identification main body concave portion 22a11 into which the identification main body portion 24a of the identification portion 24 is inserted and fitted, and the connection protrusion 24b of the identification portion 24 is located in the identification main body concave portion 22a11. It consists of a to-be-connected recess 22a12 that is inserted and fitted, and a notch 22a13 that constitutes one half of the engaged portion 25 described later.

  The identification main body recess 22a11 is a recess formed so as to fit with the identification main body 24a of the identification unit 24 in a state having some play (see FIGS. 13 to 15).

  The to-be-connected recess 22a12 is a cylindrical hole that penetrates the pusher 20 in the axial cylinder radial direction, and is formed so as to press-fit the connection projection 24b of the identification unit 24 (FIGS. 13 to 15). reference).

  The notch 22a13 penetrates the front side of the identification main body recess 22a11 in the clip width direction, and is formed in a substantially semicircular shape according to the illustrated example (see FIG. 15).

The projecting piece portions 22b and 22b are formed so as to protrude from both end portions in the clip width direction of the front portion 22a toward the shaft tube side and to be continuous over substantially the entire length in the front-rear direction of the clip body 22 (FIGS. 14 to 15). reference).
The front end sides of these projecting piece portions 22b and 22b project to the axial tube side to constitute a ball portion 22b1. Further, on the rear side of these projecting piece portions 22b, 22b, there is a projecting shaft portion 22b2 that is rotatably supported by a support convex portion 21b of a slide body 21 described later (see FIG. 15).

The urging member 23 is a compression coil spring, and is inserted behind the support point P between the slide body 21 and the clip body 22, and leaves the rear end side of the clip body 22 away from the shaft tube 10. It is biased in the direction (see FIGS. 2 to 4).
The urging member 23 only needs to urge the clip body 22 in the closing direction, and can be replaced with a tension spring, a leaf spring, a torsion coil spring provided at the support point P, or the like.

  The identification unit 24 is integrally provided with an identification main body 24a that displays the type of the refills 40 and 50 (or the writing parts 41 and 50) and a connection protrusion 24b that protrudes from the identification main body 24a. When inserted into the pusher 20 (specifically, the clip body 22) and fitted together, the identification main body 24a is configured to fit in the clip body 22 with some play.

The identification main body 24a is formed so as to be exposed to the outside of the clip body 22 in a state in which colors corresponding to the types of the writing units 41 and 50 are displayed. According to an example of the present embodiment, the identification main body portion 24a uses the color of the synthetic resin material integrally formed with the connection protrusion 24b as the color corresponding to the writing portion 41. It is also possible to adopt a mode in which a part or the whole of the surface of the main body 24a is colored.
Furthermore, as another example of the identification main body 24a, the writing parts 41 and 50 may be identified by the external shape of the identification main body 24a. For example, the identification main body 24a corresponds to the writing parts 41 and 50. It may be a mascot shape to improve the appearance of the design.

  The identification main body 24a is provided with a notch 24a1 (see FIG. 21). The notch 24a1 is arranged near the center of the identification main body 24a in the front-rear direction so that the position in the front-rear direction of the clip corresponds to the notch 22a13 of the clip body 22, and penetrates the pusher 20 in the clip width direction. (See FIG. 24). The notch 24 a 1 constitutes the engaged portion 25 in cooperation with the notch 22 a 13 of the clip body 22.

The engaged portion 25 is a hole that is surrounded by the cutout portion 22a13 of the clip body 22 and the cutout portion 24a1 of the identification portion 24 and penetrates in the clip width direction. On the inner surface of the engaged portion 25, an inclined surface 24a11 is formed so as to narrow the internal space toward the back of the engaged portion 25. The inclined surface 24a11 acts so that the pressing force received from the jig X gradually increases when the predetermined jig X is inserted into the engaged portion 25 (see FIGS. 24 and 25).
In addition, according to the example of illustration, this inclined surface 24a11 is provided only on the identification unit 24 side, but a similar inclined surface is provided only on the clip body 22 side, or on the identification unit 24 side and the clip body 22 side. You may make it provide in both.

  The connection protrusion 24 b has a plurality of vertical ribs 24 b 1 on the outer peripheral surface thereof, and these vertical ribs 24 b 1 are pressed against the inner peripheral surface of the connected recess 22 a 12 of the clip body 22.

  The pusher 30 includes a pusher body 31 formed to slide back and forth along the slide surface 12d1 in the guide hole 12b, and an identification unit 32 that is detachably attached to the pusher body 31. (See FIG. 17).

  The pusher main body 31 connects the locked portion 31a locked to the locking portion 12d2 in the guide hole 12b, the operation portion 31b protruding from the shaft cylinder peripheral wall in the shaft tube outer diameter direction, and the ballpoint pen refill 50. The refill connection part 31c etc. are provided, and the identification part 32 is attached to the fitted part 31b1 formed in the operation part 31b.

  Similar to the fitted portion 22a1 of the clip body 22, the fitted portion 31b1 of the pusher main body 31 includes an identification body portion recessed portion 31b11, a connected recessed portion 31b12, a notch portion 31b13, and the like (see FIG. 18).

The identification unit 32 is a component having the same shape as the identification unit 24 of the pusher 20 described above. Like the identification unit 24, the identification unit 32 includes an identification main body 32a and a connection protrusion 32b. The identification main body 32a has a notch 32a1. The connecting protrusion 32b has a plurality of vertical ribs 32b1, and an inclined surface 32a11 is formed in the notch 32a1.
The identification unit 32 is formed from a synthetic resin material having a color different from that of the identification unit 24.

  In addition, an engaged portion 35 for inserting the jig X is formed between the presser body 31 and the identification unit 32 having the above-described configuration, similarly to the configuration of the presser 20.

  The mechanical pencil refill 40 is configured so that the lead core in the lead tank 42 is fed out from the writing portion 41 at the front end by the knocking operation of the pusher 20 constituting the clip with an opening / closing operation function or the retractable writing instrument 1. ing.

  The ballpoint pen refill 50 is configured to project the ink in the ink tank 52 from the transfer ball at the front end of the writing unit 51.

Next, the characteristic effect of the retractable writing instrument 1 having the above-described configuration will be described in detail.
First, at the time of manufacturing the retractable writing instrument 1, there are no portions protruding from the outer diameter surface of the shaft tube 10 at both edges of the guide hole 12a (or 12b). 12b) can be easily provided with a print display portion 10a1 by transfer printing. More specifically, as shown in FIGS. 6 to 8, for example, the outer peripheral surface of the rear shaft 12 and in a range other than the guide holes 12 a and 12 b, the first edge portion 12 a 1, and the inclined surface 12 e. Thus, the star-shaped print display portion 10a1 can be easily applied to a portion close to the range.
As a result, it is possible to greatly increase variations in the shaft cylinder design by transfer printing.

  Moreover, since it has a guide hole 12a that is recessed from the outer diameter surface of the shaft tube 10 and a second edge 12a2 that protrudes beyond the guide hole 12a on the rear side of the guide hole 12a, as shown in FIG. When the pusher 20, which is a clip with an opening / closing function, is advanced, the clip body 22 and the slide body 21 of the pusher 20 are sunk to the axial center side of the pusher 20 to the locking portion 12c2 of the slide body 21. Can be satisfactorily locked. In addition, since the rear end side of the clip body 22 is close to or in contact with the outer peripheral surface of the barrel 10 as shown in FIG. There is no opening.

Further, as shown in FIG. 4, when the clip body 22 is opened at the retracted position, the concave portion on the rear side of the support point P of the clip body 22 becomes the convex portion 12f on the rear end side of the shaft tube 10. Fit together. More specifically, the projecting portions 22b, 22b on both sides in the width direction of the clip body 22 constituting the concave portion are arranged in such a manner that the inner side surfaces thereof are close to or in contact with both side surfaces of the convex portion 12f. The part and the convex part 12f fit (refer FIG.4 and FIG.5).
Further, substantially simultaneously with this fitting, the projecting ends of the two projecting piece portions 22b and 22b abut against the inclined surfaces 12e and 12e on the rear shaft 12 side.
Therefore, it is possible to prevent the clip body 22 from rattling in a direction that intersects the axial direction of the axial cylinder, such as the axial direction of the axial cylinder or the clip width direction in the open state.

  Further, when the clip body 22 is closed, the fitting between the rear end portion of the clip body 22 and the convex portion 12f is released. That is, the clip body 22 rotates in the closing direction, and the rear end portion of the clip body 22 is detached from the convex portion 12f (see FIG. 5A). Therefore, the clip body 22 is not easily subjected to frictional resistance from the shaft tube 10 side, and is held in a state where it can be easily advanced and retracted and rotated.

  In addition, in the open state of the clip body 22 as described above, as shown in FIG. 4, the rear end sides of both projecting piece portions 22b and 22b of the clip body 22 are inclined surfaces 12e and 12e ( 4 and 6), the clip body 22 can be prevented from rattling in the front-rear direction.

In addition, when the refill 40 (or 50) is replaced with a desired function or color, the identification unit 24 (or 30) is also easily replaced so as to correspond to the replaced refill 40 (or 50). be able to.
The procedure of this replacement work will be described in detail. As shown in FIGS. 24 and 25, the rod-shaped jig X is inserted into the engaged portion 25 (or 35) of the pusher 20 (or 30). The According to the illustrated example, the jig X is a refill for a ballpoint pen, and the tip of the jig X is inserted into the engaged portion 25 (or 35).
At this time, since the engaged portion 25 (or 35) is a through hole, it is possible to prevent the tip portion of the inserted jig X (the tip of the ballpoint pen refill) from being damaged.
And if the jig | tool X is pushed in into the to-be-engaged part 25 (or 35), the front end side of the jig | tool X will be the inclined surface 24a11 (or 32a11) of the identification part 24 (or 32), and the presser 20 (30). Thus, the discriminating portion 24 (or 32) comes out of the pusher 20 (30) and comes off.
The tip of the jig X can be inserted into the engaged portion 25 (or 35), and the identification portion 24 (or 32) can be removed using the jig X.

  Moreover, when attaching the identification part 24 (or 32) of another color, what is necessary is just to push these identification part 24 (or identification part 32) into the to-be-fitted part 22a1 (or 31b1) by hand. .

  Therefore, according to the above-described writing tool 1, when the refills 40 and 50 are exchanged for a desired color or function, the identification unit 24 (or 32) is easily exchanged so as to correspond to the color or function. can do.

  Next, another specific example of the present embodiment will be described. In addition, since the retractable writing instrument shown below is a partial modification of the retractable writing instrument 1 described above, the changed part will be mainly described in detail, and a duplicate description will be omitted.

  The retractable writing instrument 2 shown in FIGS. 26 to 28 is obtained by replacing the retractable writing instrument 1 by replacing the rear shaft 12 with the rear shaft 12 ′ and replacing the clip body 22 with the clip body 22 ′.

  The clip body 22 ′ has a ball portion 22 c ′ on the inner surface on the front side of the support point P and projecting toward the shaft tube side from other portions of the inner surface. The ball portion 22c 'is a plate-like portion in which a protruding end portion that protrudes toward the axial tube side is formed in a substantially rectangular shape that is long in the longitudinal direction of the clip.

  The rear shaft 12 ′ is provided with a guide groove 12 g ′ in which the ball portion 22 c ′ is inserted and guided in the front-rear direction in front of the guide hole 12 a in the peripheral wall thereof so as to be recessed from the outer diameter surface 10 a of the shaft cylinder. . The guide groove 12g 'is a long groove having substantially the same depth in the axial direction of the shaft cylinder, and is formed to have a dimension slightly longer than the longitudinal stroke of the clip body 22'.

Therefore, according to the retractable writing instrument 2 shown in FIGS. 26 to 28, when manufacturing the rear shaft 12 ′, the outer peripheral surface of the rear shaft 12 ′, the guide holes 12 a and 12 b, and the first edge portion 12 a 1. The star-shaped print display portion 10a1 can be easily applied by transfer printing in a region other than the inclined surface 12e and the guide groove 12g ′ and in the vicinity of the region.
Moreover, since the ball portion 22c ′ of the clip body 22 ′ is received by the concave guide groove 12g ′, the clip body 22 ′ can be prevented from rattling in the axial direction. In addition, since the ball portion 22c ′ of the clip body 22 ′ that moves forward and backward does not slidably contact the print display portion 10a1 on the outer peripheral surface of the shaft cylinder, the print display portion 10a1 is peeled off by being rubbed by the ball portion 22c ′. Can be prevented.

  29, the retractable writing instrument 3 replaces the retractable writing instrument 1 with the rear shaft 12 replaced by a rear shaft 12 ″ having a protrusion on the outer peripheral surface, and the cylindrical slide body 12c and the knock portion 13 are replaced. The configuration is omitted.

  The rear shaft 12 ″ has a substantially cylindrical shape in which the rear portion side is gradually reduced in a convex curve shape, and a ball receiving portion 12h ″ that protrudes radially outward from a portion on the outer peripheral surface of the rear shaft 12 ″. , Guide walls 12i ″ and 12i ″ projecting radially outward along both edges on the rear side of the guide hole 12a, and convex portions 12j ″ projecting radially outward on the rear side of the guide piece 12i ″. doing.

  The ball receiver 12h "is formed in a convex piece shape extending in the front-rear direction and fits into the substantially concave ball portion 22b1 on the back surface of the clip body 22 to prevent the clip body 22 from rattling in the circumferential direction, or the ball portion 22b1. The frictional resistance when the object to be clamped is sandwiched between the outer peripheral surface of the shaft cylinder and the shaft cylinder is increased.

  The guide walls 12i "and 12i" project from the outer peripheral surface of the shaft cylinder so as to sandwich the support convex portion 21b of the slide body 21 from both sides in the clip width direction, and guide the advancement and retraction of the slide body 21. Prevent rattling.

  The convex portion 12j ″ projects in the radial direction from the outer peripheral surface on the rearmost end side of the rear shaft 12, and fits with the rear end side portion of the clip body 22 when opened.

  According to the retractable writing instrument 3 configured as described above, since the rear shaft 12 ″ has a portion protruding radially outward from the outer peripheral surface of the rear shaft 12 ″, transfer printing is performed as compared with the retractable writing instruments 1 and 2. Although it is difficult, since the protruding amount of the projection 12j ″ is relatively large, it is possible to effectively prevent the clip body 22 from rattling at the time of opening.

  In addition, according to the above-mentioned retractable writing instruments 1, 2, and 3, the plurality of pressers 20 and 30 are provided. However, as another example, a mode in which a single presser is provided is also possible. .

  Moreover, although the said retractable type writing instruments 1, 2, and 3 press-fit the identification part 24 (or 32) to the presser 20 (or 30), these should just be detachably connected, A structure other than the illustrated example is also possible.

  In addition, according to the above-described writing instruments 1, 2, and 3, the identification portions 24 and 32 are protruded from the presser 20 (or 30) so that the identification portions 24 and 32 function as a handle portion. As another example, it is set as the aspect which made the identification parts 24 and 32 flush with the pusher 20 (or 30), or the aspect which immersed the identification parts 24 and 32 in the pusher 20 (or 30) visually. Is also possible.

  In addition, according to the above-described writing instruments 1, 2, and 3, the identification parts 24 and 32 have the same external shape. However, as another example, some or all of the plurality of identification parts are different from each other. It may have a different external shape.

  Moreover, although the said identification parts 24 and 32 were made to display the color according to the classification of the writing parts 41 and 51, the aspect which has a predetermined shape according to the classification of a writing part as another example of this identification part It is possible to adopt a mode in which characters, symbols, patterns, figures, etc. are displayed according to the type of writing part.

  Moreover, according to the above-described writing tools 1, 2, and 3, the pole pen is used as the jig X for removing the identification parts 24 and 32. However, as another example, the toothpick or other rod-like member or It is also possible to use a tapered member. Furthermore, without using the jig X, it is also possible to adopt a mode in which the identification portions 24 and 32 are attached and detached by manually pushing or pulling.

  Moreover, according to the above-mentioned penetrating type writing instruments 1, 2, and 3, as a particularly preferable specific example, the second edge 12a2 is made substantially the same diameter as the virtual outer diameter surface 10x (see FIG. 11) of the shaft tube 10, but other As an example, the second edge 12a2 may be protruded from the first edge 12a1 within a diameter range smaller than the virtual outer diameter surface 10x.

  Further, according to the above-mentioned penetrating writing instruments 1, 2, and 3, as the clip body 22 is opened at the retracted position, the concave portion on the rear side of the support point P in the clip body 22 is located on the shaft tube 10 side. Although it was made to fit with respect to the convex part 12f, as another example, the convex part which protrudes to the axial cylinder 10 side is provided in the rear end side of the clip body 22, and the concave part is provided in the axial cylinder 10 side. The recesses may be fitted and removed.

  Moreover, according to the above-mentioned penetrating type writing instruments 1 and 2, the slide surfaces 12c1 and 12d1 that receive the pressers 20 and 30 so as to be slidable back and forth, and the pressers 20 and 30 that are moved forward along the slide surfaces 12c1 and 12d1 are provided. Locking portions 12c2 and 12d2 that sink and lock to the inner side of the shaft cylinder are provided on the cylindrical slide body 12c in the rear shaft 12. However, as another example, the slide surface and the locking portion are provided on the shaft cylinder. It is also possible to adopt an aspect in which the peripheral wall is directly provided.

  In addition, according to the above-described writing instruments 1, 2, and 3, the identification units 24 and 32 are configured to be detachable from the clip body 22 or the presser body 31, but as another example, the identification units 24 and 32 are clipped. A mode in which the body 22 or the presser body 31 is detachably attached, a mode in which the identification parts 24 and 32 are integrally formed with the clip body 22 or the presser body 31, a clip body 22 having no identification parts 24 and 32, and It is also possible to adopt an aspect in which the presser body 31 is configured.

1,2,3: Retractable writing instrument 10: Shaft tube 10a1: Print display part 12a, 12b: Guide hole 12a1: First edge part 12a2: Second edge part 12a3: Third edge part 12c2, 12d2: Locking part 12f : Convex part 12e: Inclined surface 20, 30: Pusher 21: Slide body 22: Clip body 22a: Front part 22b: Projection piece part 24, 32: Identification part 24a, 32a: Identification body part 24b, 32b: Connection projection part 25, 35: Engaged part 31: Presser body 40: Mechanical pencil refill 41: Writing part 50: Ballpoint pen refill 51: Writing part P: Support point X: Jig

Claims (4)

A shaft cylinder, a slide body that moves back and forth between the forward position and the retreat position along the shaft cylinder, a clip body that is supported by the slide body and exposed to the outside of the shaft cylinder, and that moves forward and backward by the slide body A portion of the clip body on the front side of the support point of the clip body by being pushed inwardly in the axial direction of the shaft cylinder. In the retractable writing instrument with a clip opening / closing operation function that is opened apart from the shaft cylinder,
A clip opening / closing operation characterized in that, as the clip body is opened at the retracted position, a portion of the clip body on the rear side of the support point fits in an uneven shape with respect to the shaft cylinder. In / out type writing instrument with function.   The portion of the clip body on the rear side of the support point is in a state in which the clip body is not fitted in a concave-convex shape away from the shaft tube as the clip body is closed from the open state at the retracted position. The retractable writing instrument with a clip opening / closing operation function according to claim 1. Provided on the back surface behind the support point in the clip body are two projecting pieces spaced apart in the clip width direction and continuous in the front-rear direction, and on the rear end side of the shaft tube, the two protrusions Providing a convex part that fits inside the one part,
The retractable writing instrument with a clip opening / closing operation function according to claim 1, wherein the concave and convex fitting is constituted by the two projecting piece portions and the convex portion.   On both sides sandwiching the convex portion in the clip width direction on the outer peripheral surface of the shaft cylinder, an inclined surface that is inclined inward in the axial cylinder diameter is formed, and the clip body is disposed between the two projecting piece portions. 4. A retractable writing instrument with a clip opening / closing operation function according to claim 3, wherein the projecting parts are fitted together and the projecting ends of the two projecting piece parts are brought into contact with the inclined surface.

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