JP4553102B2 - Telescopic writing or cosmetics - Google Patents

Description

  The present invention relates to a shaft cylinder portion for storing a writing member (such as a mechanical pencil lead case, a water / oil-based ballpoint pen refill) and a decorative member (lipstick, eye shadow, eyeliner, etc.), for example, a front cylinder and a rear axle cylinder. It is related with the expansion-contraction type writing instrument or cosmetics which were divided | segmented into 2 and enabled the said cylinder to move relatively in the longitudinal direction (up-down direction).

  The “extended state” when the full length of the writing instrument or the cosmetic of the present invention is lengthened is the use mode, and the “shrinked state” when the full length is shortened is the portable (non-use) mode.

  In this specification, if necessary, the writing member or the writing member of the cosmetic tool or the appearance side of the decorative member is described as “lower” or “first”, and the operation side opposite to this is “up” or “rear”. .

  Conventionally, by moving the front and rear cylinders of the writing instrument relative to each other in the longitudinal direction, the entire length of the writing instrument can be changed to selectively set the “extended state” and “contracted state” thereof. It is known to do (see, for example, Patent Document 1).

When moving this writing instrument from the “reduced state” to the “extended state”, the user
First, for example, pull the rear barrel (upper barrel) from the front barrel (intermediate barrel) in the longitudinal direction,
-Next, this rear barrel is rotated by a certain angle with respect to the front barrel,
As described above, a two-stage operation consisting of pulling in the longitudinal direction with respect to the rear barrel and subsequent rotation in the circumferential direction (clockwise) is performed.

Then, the user who makes the transition from the “extended state” to the “contracted state” reverses the above case, for example, by first rotating the rear barrel in the circumferential direction (counterclockwise). After releasing the locked state of “state”, an operation such as pushing into the front barrel is performed.
Japanese Patent Laid-Open No. 05-139087

  In the case of a conventional writing instrument having such a selective setting function of “extended state” and “contracted state”, the rear barrel is required to change from one mode to the other mode in each of these states. In other words, there is a problem that the two-dimensional operation of the expansion / contraction operation and the rotation operation with respect to the above has to be performed, and it takes time and effort to change the mode.

  Accordingly, in the present invention, the relative movement operation of the front and rear barrels in the vertical direction is changed between the use mode of the “extension state” and the portable mode of the “contraction state” of the telescopic writing instrument or makeup tool. Only, that is, an expansion / contraction mechanism that can be selectively set only by a one-dimensional operation on the shaft cylinder, thereby simplifying the selection operation of the “extension state” and the “contraction state” of the writing instrument, etc. Objective.

The present invention solves the above problems as follows.
(1) The shaft cylinder portion of the writing member or the decorative member is formed in a manner in which it is divided into a first shaft cylinder (for example, rear shaft cylinder 2 described later) and a second shaft cylinder (for example, front shaft cylinder 3 described later). In a telescopic writing instrument or cosmetic that the shaft cylinders move relative to each other in the longitudinal direction,
On the writing member (for example, a core case 4 to be described later) or the decorative member, a slider (for example, a slider 5 to be described later) that moves in the longitudinal direction, and a corresponding rotor (for example, a rotor 6 to be described later) Install,
A guide portion (for example, a groove-like portion 21 described later) for guiding the slide and the rotor in the longitudinal direction is formed in the first shaft tube,
A cam surface (for example, cam surfaces 52 and 22 to be described later) is formed on each of the slide and the first shaft cylinder to act on and rotate the rotor.
The cam surface,
Guide of the guide unit based on the relative movement in the extending direction when shifting from the portable mode to the use mode in a state where the rotor is positioned on the guide unit and in contact with the cam surface of the slide unit A first stable position (for example, FIG. 5) in which the rotor (for example, a columnar section 61 to be described later) deviated from the cam surface of the rotor is deviated from the guide section in a certain circumferential direction by the cam action of the slider. Rotate to 3 (b) position)
Thereafter, the relative movement in the contracting direction opposite to the extending direction causes the rotor (for example, a columnar portion 61 described later) in the first stable position to be cammed by the first shaft cylinder, Rotate and hold the cam surface to the use mode position (for example, the position of FIG. 3 (c)) that is shifted in the circumferential direction from the stable position.
Thereafter, the relative movement in the extending direction again causes the rotor (for example, a columnar portion 61 described later) at the use mode position to move to the use mode position on the own cam surface by the cam action of the slider. To the second stable position (for example, the position shown in FIG. 4 (d)) of the shape shifted in the circumferential direction from
Thereafter, the relative movement in the contraction direction again causes the rotor (for example, a columnar portion 61 described later) at the second stable position to move from the stable position by the cam action of the first shaft cylinder. The guide unit is rotated to the position of the guide portion shifted in the circumferential direction (for example, the position shown in FIG. 4E) to return to the portable mode.
(2) In (1) above,
The slider has a downward taper portion (for example, a taper portion 52b described later) that transitions from a peak portion to a trough portion when viewed in a certain circumferential direction, and an upward taper portion (for example, that is described later) that transitions from a valley portion to a peak portion. A taper portion 52c) is formed,
A first taper portion (for example, a taper portion 22a described later) for setting the use mode position, a hanging portion (for example, a hanging portion 22b described later), and the rotor following the first taper portion for setting the use mode position on the first shaft cylinder. A cam surface including a second tapered portion (for example, a tapered portion 22c described later) for rotating to the position of the guide portion is formed.
(3) In the above (2), the cam surface unit portion including the first tapered portion and the hanging portion following the first tapered portion and the second taper portion following the hanging portion is disposed between the adjacent guide portions. To form.

  In this way, the present invention selects the use mode (extended state) and the portable mode (contracted state) of the telescopic writing instrument or cosmetic tool, and performs the relative movement operation in the vertical direction of the front barrel and the rear barrel. Therefore, the mode selection operation of the writing instrument or the like can be simplified.

  An embodiment of the present invention will be described with reference to FIGS. As described above, the present invention can be applied to either a retractable writing instrument or a cosmetic tool. However, in the following description, for the sake of convenience of explanation, the mechanical pencil of the writing instrument is used as a target.

  FIG. 1 is a portable mode (contracted state) of the telescopic writing instrument, FIG. 2 is a usage mode (extended state) of the writing instrument, FIG. 3 is a position change of a rotor or the like accompanying the transition from the portable mode to the usage mode, FIG. Is a change in the position of the rotor and the like accompanying the transition from the use mode to the portable mode, FIG. 5 shows the slide and the rotor, FIG. 6 shows the rear barrel and the AA ′ cross section of FIG.

The writing instrument shown is roughly
・ Cap 1
A rear barrel 2 that is strongly fitted to the cap 1 and has a cam surface 22 for a rotor, which will be described later, on the lower portion of the inner peripheral surface.
-A barrel 3 that can move in the vertical direction while being guided by the inner peripheral surface of the cap 1
-It has a well-known core chuck on the lower end side and is housed in the internal space of the rear barrel 2 and the front barrel 3 and moves up and down integrally with the front barrel (except during the centering operation). Core case 4
An annular slide 5 which is arranged on the outer peripheral surface side of the core case 4 and is guided by a vertical groove-like portion of the rear barrel 2 and which has a cam surface 52 with respect to a rotor described below at the lower end portion.
-It is arranged on the outer peripheral surface side of the core case 4 and moves in the vertical direction while being guided by the vertical groove-shaped portion 21 of the rear barrel 2 together with the slider 5, and in the state where it is detached from the groove-shaped portion, the slide An annular rotor 6 that rotates in the circumferential direction of the core case by the action of the cam surfaces of the child and the rear barrel.
-Crown 7 screwed into cap 1
・ Tapered tip 8 screwed onto the tip barrel 3
It consists of each component.

  The main feature of this writing instrument is that it can be moved up and down by being guided by the groove portion 21 of the rear barrel 2 together with the slider 5 and is rotated with respect to the core case 4 and the like in a state of being removed from the groove portion. This is a change mode of the rotational position of the movable rotor 6 when the portable mode / usage mode is switched. In addition, since the slide 5 is always guided by the groove-shaped portion in the vertical direction of the rear barrel 2, the slide does not rotate with respect to the rear barrel.

That is, as shown in FIG. 3 and FIG.
A: The rear barrel 2 (cap 1) and the front barrel 3 are relatively extended (for example, the rear barrel 2 is moved upward with respect to the front barrel 3) from the portable mode of FIG. When shifting to use mode,
(a1) First, by relatively extending the rear barrel 2 and the front barrel 3 (moving the rear barrel 2 to, for example, the uppermost position), the rotor 6 has a columnar portion 61 of the rear barrel. After detaching from the vertical groove-shaped portion 21, the cam surface 52 of the slider 5 is rotated clockwise (as viewed from above) to the first stable position, and the slider is rotated by this amount. Move downward with respect to the rotor (FIG. 3 (a) → (b)),
(a2) Next, the rotor 6 (columnar portion 61) is slightly lowered by lowering the rear barrel 2 (for example, knocking the crown 7 or pressing the lower end side of the taper tip 8 against the paper surface). Is further rotated in the clockwise direction to the use mode position of the cam surface 22 of the rear barrel 2 and the slider is moved up and down with respect to the rotor by this amount of rotation [ Fig. 3 (b) → (c): Use mode of Fig. 2],
B: On the other hand, when shifting from the use mode of FIG. 2 to the portable mode of FIG.
(b1) First, for example, by moving the rear barrel 2 (cap 1) to the uppermost position again, the rotor 6 (columnar portion 61) is further moved to the second stable position of the cam surface 52 of the slider 5. It rotates clockwise and the slider moves downward relative to the rotor by this amount of rotation (FIG. 3 (c) → FIG. 4 (d)).
(b2) Next, the rear shaft cylinder 2 (cap 1) and the front shaft cylinder 3 are relatively contracted (for example, the rear shaft cylinder 2 is moved downward relative to the front shaft cylinder 3), whereby the rotor 6 ( The columnar portion 61) further rotates in the clockwise direction to the next groove-shaped portion 21 in the vertical direction of the rear barrel while following the cam surface 22 of the rear barrel 2, and the slider is rotated by the amount of rotation. As shown in FIG. 4 (d) → (e).

  In the state shown in FIG. 3C after step (a2) is completed, the rotor 6 (and the core case 4 integrated with the rotor 6 in the vertical direction) is locked to the rear barrel 2 through the columnar portion 61, that is, The rear barrel and the core case 4 are integrated, and the centering knock operation for the rear barrel (the crown 7) becomes effective.

  Of course, in this locked state, the rear barrel 2 cannot be moved downward relative to the front barrel 3 beyond the stroke of the normal knocking operation, that is, the portable mode cannot be shifted. Step (b1) is for releasing this locked state.

  The rotor 6 is rotated by one pitch of the groove portion 21 in the vertical direction of the rear barrel 2 for each cycle of the portable mode-use mode-mobile mode of (a1) to (b2).

  As described above, the portable mode (contracted state) and the use mode (extended state) of the telescopic writing instrument can be performed only by the relative expansion / contraction operation of the rear barrel 2 and the front barrel 3, that is, without the rotation operation with respect to the axial barrel. ) And are selectively set.

1 to 6,
1 is a cap, 11 is a clip integral with the cap, 12 is a middle ring screwed into the lower end of the cap,
2 is a rear barrel, 21 is a groove-like portion formed in such a manner that its lower end opens in the vertical direction of the inner peripheral surface of the rear barrel, 22 is a lower-end side of the rear barrel (the groove-like portion 21 exists) A serrated cam surface formed on the cam surface, 22a is a taper portion for setting the use mode position of the cam surface, 22b is a hanging portion for setting the use mode position of the cam surface, and 22c is a groove on the cam surface. A taper portion for transferring the shape portion, 23 is a flat lower end surface of the rear barrel,
3 is a front shaft cylinder, 31 is an upper end surface of the front shaft cylinder, 32 is a hole formed in the front shaft cylinder, and 33 is a front shaft that is integrated with the front shaft cylinder and contacts the inner peripheral surface of the cap 1. A tube guide leaf spring 33a is a projecting portion for fitting the leaf spring into the hole,
4 is a core case, 41 is a cylindrical portion press-fitted into the opening of the core case, 41a is an annular flange formed on the outer peripheral surface of the cylindrical portion and corresponding to the slider 5, and 42 is a rotor. 6 is an annular seat portion corresponding to 6, a tail plug detachably attached to the upper end side of the cylindrical portion, 44 is a chuck joint integral with the core case, and 45 is wound around the chuck joint. Coil spring for return of centering operation,
5 is a slide element, 51 is a columnar part guided by the groove-shaped part 21 of the rear barrel 2, 52 is a mountain-shaped cam surface formed on the lower end surface of the slide element, 52a is a valley part of the cam surface, 52b is a downward taper portion that goes from the peak to the valley when the cam surface is viewed counterclockwise from the lower side, 52c is an upward taper portion opposite to this, and 53 is an urging portion of the slide downward. A coiled spring wound around the tubular portion 41 between the upper surface and the annular flange 41a,
6 is a rotor, 61 is guided by the groove portion 21 of the rear barrel 2, and in the state where the groove portion is removed, the rotational force from the cam surface 22 of the rear barrel and the cam surface 52 of the slide 5 The columnar portion 61a receives the tapered cam surface formed on the upper end surface of the columnar portion so as to correspond to the downward taper portion 52b of the slide 5, and 62 represents the annular seat 42 and the lower surface of the rotor. An annular washer attached to the core case part between,
7 is a crown,
8 is a taper tip with an opening for centering,
9 is a taper joint in which the chuck joint 44 moves up and down by screwing with the taper tip 8.
Respectively.

  Here, a well-known core feed mechanism (not shown) operates because the columnar portion 61 of the rotor 6 is moved in the rotation direction and the upward direction by the tapered portion 22a and the hanging portion 22b of the cam surface 22 of the rear barrel 2. In the locked state (see FIG. 3C), for example, the crown 7 integral with the rear barrel is knocked, that is, the core case 4 is lowered with respect to the front barrel 3 (taper joint 9). It is time to move.

In the portable mode of FIG. 1 [= FIG. 3 (a)]
The rear barrel 2 and the front barrel 3 are set in a contracted state in which the lower end surface 23 and the upper end surface 31 are in contact with each other,
In the slider 5 and the rotor 6, the columnar portions 51 and 61 are guided by the groove-shaped portion 21 of the rear barrel 2, and the descending tapered portion 52b and the cam surface 61a are in contact with each other. Urged downward by a coiled spring 53,
The rotor 6 is not restrained by the cam surface 22 of the rear barrel 2 at all.

  In the portable mode, the centering knock operation cannot be performed because the lower end surface 23 of the rear barrel 2 and the upper end surface 31 of the front barrel 3 are in contact with each other.

  In order to shift from the portable mode in FIG. 1 to the use mode in FIG. 2, the rear barrel 2 and the front barrel 3 should be relatively stretched in the longitudinal direction to the maximum extent and then slightly shortened.

In the use mode of FIG. 2 (= FIG. 3 (c)),
The lower end surface 23 of the rear barrel 2 and the upper end surface 31 of the front barrel 3 are separated from each other;
The columnar portion 51 of the slide 5 is guided by the groove-shaped portion 21 of the rear barrel 2 (= FIG. 1)
The columnar portion 61 of the rotor 6 is detached from the groove-shaped portion 21 of the rear barrel 2 and is locked to the tapered portion 22a and the hanging portion 22b of the cam surface 22 of the rear barrel 2,
The cam surface 61a of the rotor 6 is in contact with the tapered portion 22a of the rear barrel 2 and the downward tapered portion 52b of the slide 5 (= one downward tapered portion as compared with the portable mode).

  That is, the rear cylinder 2 and the front cylinder 3 are separated from each other, and the rotor 6 moving in the vertical direction together with the core case 4 holds the columnar portion 61 by the cam surface 22 of the rear cylinder 2. Since the core case 4 is locked (unrotatable), the lead case 4 is moved downward with respect to the taper joint 9 by the knocking operation of the crown 7 (rear barrel 2), and the centering operation is performed.

  The centering operation here may be of any type that involves relative movement of the rear barrel 2 and the front barrel 3 in the contraction direction. For example, an operation of moving the front barrel 3 backward with respect to the rear barrel 2 may be used. In any centering operation, the positional relationship between the shaft cylinders is restored to the state before the operation by the action of the coiled spring 45.

  The following description regarding FIG. 3 and FIG. 4 is based on a mode switching operation for moving the rear barrel 2 back and forth with respect to the front barrel 3 for convenience of explanation, and in the plurality of columnar portions of the rotor 6. The content is focused on the positional change of one (the columnar part 61 in the figure). It should be noted that the mode switching operation itself is not limited to this assumption as long as it involves the relative back and forth movement of the rear barrel 2 and the front barrel 3.

In FIG.
(a) In the mobile mode of FIG.
-Both the columnar portions 51 and 61 of the slider 5 and the rotor 6 enter the groove-shaped portion 21 of the rear barrel 2,
The cam surface 61a of the rotor 6 abuts on the downward taper portion 52b of the bottom surface portion of the columnar portion 51 of the slider 5 in such a manner that the cam surface does not reach the valley portion 52a of the cam surface 52 of the slider. ,
(b) In the most extended state during the transition to the use mode (= the state where the rear barrel 2 is moved up),
-While the columnar part 51 of the slider 5 has entered the groove-shaped part 21 of the rear barrel 2,
The columnar portion 61 of the rotor 6 is detached from the groove-shaped portion 21 of the rear barrel 2 and
The rotor 6 is rotated to a position where the cam surface 61a reaches the valley 52a while abutting the downward taper portion 52b of the slide cam surface 52,
The slide 5 moves downward toward the rotor by the amount of the rotation of the rotor 6,
(c) In the use mode of FIG. 2 (= the state in which the rear barrel 2 is slightly moved down from the fully extended state),
-While the columnar part 51 of the slider 5 has entered the groove-shaped part 21 of the rear barrel 2,
The rotor 6 is rotated to a position where the columnar portion 61 contacts the tapered portion 22a and the hanging portion 22b of the rear barrel cam surface 22 by the action of the tapered portion 22a of the rear barrel cam surface 22 with respect to the cam surface 61a. Moved into a locked state,
The slide 5 once moves up with respect to the rotor cam surface 61a by the amount corresponding to the rotation of the rotor 6, and then moves down.
-The inner portion (not projecting outward) of the rotor cam surface 61a is located on the next downward taper portion that exceeds the upward taper portion 52c in the clockwise direction from the downward taper portion 52b in (b) of the slider 5. It contacts in a manner that does not reach the valley.

  That is, in the use mode (c), the rotor 6 is blocked by the drooping portion 22a during the centering operation (for example, the knocking operation of the rear shaft tube 2) for relatively contracting the rear shaft tube 2 and the front shaft tube 3. Can not rotate. Therefore, the rotor and the core case 4 integrated with the rotor in the vertical direction move downward with respect to the front barrel 3, and the core feeding mechanism operates.

In FIG.
(d) For example, in the fully extended state where the rear barrel 2 is moved upward,
-While the columnar part 51 of the slider 5 has entered the groove-shaped part 21 of the rear barrel 2,
The rotor 6 has its columnar portion 61 and the cam surface 61a separated from the contact positions of the tapered portion 22a and the drooping portion 22b of the rear-shaft barrel cam surface 22 up to that (use mode), and its cam surface. 61a rotates to the position where it reaches the valley 52a while following the downward taper 52b of the cam surface 52 of the slider 5,
The slide 5 moves downward toward the rotor by the amount of the rotation of the rotor 6,
(e) During the subsequent downward operation of the rear barrel 2 (= in the middle of shifting to the portable mode)
-While the columnar part 51 of the slider 5 has entered the groove-shaped part 21 of the rear barrel 2,
In the rotor 6, the columnar portion 61 is adjacent to the corresponding groove-shaped portion 21 in (a) in the clockwise direction by the action of the tapered portion 22c of the rear barrel cam surface 22 with respect to the cam surface 61a. Rotate to the position where it enters,
The slide 5 once moves up with respect to the rotor cam surface 61a by the amount corresponding to the rotation of the rotor 6, and then moves down.
In a mode in which the cam surface 61a of the rotor 6 does not reach the trough portion of the slide 5 from the downward taper portion 52b in (d) to the next downward taper portion that exceeds the upward taper portion 52c in the clockwise direction. It contacts, and it shifts to portable mode with this contact state.

  In this manner, the so-called locked state of the rear barrel 2 and the rotor 6 in the use mode of FIG. 3 (c) is once released, and the rotor is rotated to the stable position of the slide cam surface 52. Thereafter, the columnar portion 61 of the rotor 6 is guided to the groove-shaped portion 21 of the rear shaft cylinder 2 by driving the rotor cam surface 61 a with the tapered portion 22 c of the rear shaft cylinder cam surface.

  The positional change of the rotor 6 can be sufficiently ensured because of the positional relationship in the circumferential direction between the groove portion 21 and the hanging portion 22b of the rear barrel 2 and the valley portion 52a of the cam surface 52 of the slider 5. Is shifted as shown in the figure.

  That is, none of the columnar portions 61 of the rotor 6 in FIGS. 3A and 3C is in contact with the trough portion 52a which is the stable position of the cam surface 52 of the slide 5. Therefore, when the next (b) and (d) are fully extended, the rotor 6 always rotates to the position of the valley 52a of the cam surface 52 of the slide 5, and then the rear barrel 2 Even if is moved downward, the original states (a) and (c) are not returned, and the original states (c) and (e) can be reliably transferred.

  5 and 6 show the cam surfaces and the like of the slider 5, the rotor 6 and the rear barrel 2 in the form of perspective views, and show the AA 'cross section of FIG.

  In the above description, the groove portion 21 is provided on the inner peripheral surface of the rear barrel 2 and the columnar portions 51 and 61 are provided on the slide 5 and the rotor 6, respectively, but this may be reversed.

  In this case, a projecting guide portion (in place of the groove portion 21) is formed on the inner peripheral surface of the rear barrel 2, and the columnar portions 51 and 61 of the slider 5 and the rotor 6 are made to be part of the other annular portions. And a cam surface 61 shown in the annular portion (the flat upper surface portion in FIG. 5B) other than the columnar portion 61 of the rotor 6. What is necessary is just to form the cam surface equivalent to.

It is explanatory drawing which shows the portable mode (reduced state) of the expansion-contraction type writing instrument of this invention. It is explanatory drawing which shows the use mode (extension state) of the expansion-contraction type writing instrument of this invention. It is explanatory drawing which shows position changes, such as a rotor in connection with the transfer from portable mode to use mode of this invention. It is explanatory drawing which shows position changes, such as a rotor in connection with the transfer from use mode to portable mode of this invention. It is explanatory drawing which shows the slider and rotor of this invention. It is explanatory drawing which shows the rear axle cylinder of this invention, and the AA 'cross section of FIG.

Explanation of symbols

1: cap 11: clip 12: middle ring 2: rear barrel 21: groove portion 22: serrated cam surface 22a: tapered portion 22b for use mode position setting: hanging portion 22c for use mode position setting: groove Tapered portion 23 for transition to the shape portion: Flat lower end surface 3: Lead shaft tube 31: Upper end surface 32: Hole portion 33: Plate spring 33a for guiding the tip shaft tube: Projecting portion 4: Core case 41: Tube portion 41a: annular flange 42: annular seat 43: tail plug 44: chuck joint 45: coil spring 5 for returning the centering operation 5: slider 51: columnar portion 52: mountain-valley cam surface 52a: valley 52b: Downward taper part 52c: Upward taper part 53: Coil spring wound around the core case part (tubular part) 6: Rotor 61: Columnar part 61a: Tapered cam surface 62: An annular washer 7: Crown 8: Taper tip 9: Taper joint

Claims (3)

In a telescopic writing instrument or makeup tool in which a shaft tube portion of a writing member or a makeup member is formed in a mode in which the shaft tube portion is divided into a first shaft tube and a second shaft tube, and the shaft tubes move relative to each other in the longitudinal direction. ,
Attached to the writing member or the decorative member is a slider that moves in the longitudinal direction, and a rotor that corresponds to the slider.
A guide portion for guiding the slide and the rotor in the longitudinal direction is formed on the first shaft tube,
Forming cam surfaces for acting on and rotating the rotor on each of the slider and the first shaft cylinder,
The cam surface,
Said rotor based on said relative movement in the extension direction when moving from the portable mode in which contact with the self cam surface of the slide element is located on the guide portion to the mode of use, the guide of the guide portion The rotor that has been removed from the rotating position is rotated and held by the cam action of the slider to the first stable position of the cam surface that is deviated from the guide portion in a certain circumferential direction.
Thereafter, by the relative movement in the contraction direction opposite to the extension direction, the rotor at the first stable position is moved to the stable position on the own cam surface by the cam action of the first shaft cylinder. Rotate to the use mode position of the shape shifted in the circumferential direction from
Thereafter, the rotor in the use mode position is displaced from the use mode position in the circumferential direction of the cam surface by the cam action of the slider by the relative movement again in the extending direction. Rotate to the second stable position of
Thereafter, the relative movement in the contraction direction again causes the rotor at the second stable position to be displaced from the stable position in the circumferential direction by the cam action of the first shaft cylinder. Rotate to the position of the guide part to return to the mobile mode, and to have a shape,
A telescopic writing instrument or makeup tool characterized by that. Forming a cam surface consisting of a downward taper portion that transitions from a peak portion to a valley portion when viewed in a constant circumferential direction, and an upward taper portion that transitions from a valley portion to a peak portion on the slider,
A first tapered portion for setting the use mode position and a hanging portion following the first tapered portion, and a second tapered portion for rotating the rotor to the position of the guide portion. Formed a cam surface consisting of
The telescopic writing instrument or makeup tool according to claim 1. A cam surface unit portion composed of the first tapered portion and the hanging portion following the first tapered portion and the second tapered portion following the hanging portion is formed between the adjacent guide portions.
The telescopic writing instrument or makeup tool according to claim 2.

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