JP3076380B2 - Knock-type writing instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a writing instrument such as a ball-point pen, a felt-tip pen, a marker pen, and the like. It relates to a knock type writing instrument.

[0002]

2. Description of the Related Art Conventional knock-type writing instruments of this kind are disclosed in Japanese Utility Model Laid-Open No. 61-107590 and Japanese Utility Model Laid-Open No. 1-16.
No. 6,577, and the like.

[0003]

Since these conventional knock-type writing instruments all use elasticity in the knocking portion, the clip portion, and the like, they are fatigued by long-term use and have a relatively short life. was there.

[0004]

In order to solve the above-mentioned problems, a knock-type writing instrument according to the present invention comprises a refill 2 slidably disposed in an outer cylinder 1 as shown in FIGS.
An elastic body 3 for urging the refill 2 rearward, and a knock portion 5 and a clip portion 4 provided inside and outside the outer cylinder 1, respectively, are provided. And a projecting and storing hole for maintaining the stored state of the pen tip 2A of the refill 2 by leverage movement of a fulcrum 10 provided in the knocking portion 5 through a hole 7 provided in the knocking portion 5. And the projection 9 is disengaged.

[0005]

In the knock-type writing instrument of the present invention, when the knock portion 5 is knocked, the knock portion 5 moves forward together with the clip portion 4 against the elastic force of the elastic body 3, and the movement causes the refill 2 to move forward. As a result, the pen tip 2A protrudes from the distal end of the outer cylinder 1, and the clip portion 4 and the knock portion 5 rotate about the fulcrum 10 at the position of the projecting hole 7, and the projection 9 is locked in the projecting hole 7. Then, the pen tip 2A can be kept in a protruding state and used for writing.

To accommodate the pen tip 2A, when the knock portion 5 is rotated together with the clip portion 4 in the opposite direction by the clip portion 4, the projection 9 comes off from the projecting hole 7 and the refill 2 is moved to the clip portion 4. The pen tip 2A is moved backward by the elastic force of the elastic body 3 together with the knocking portion 5 and the pen tip 2A is housed, and the projection 9 is locked in the housing hole 8 or the clip base 6 is held in the housing hole
A, and the stored state of the pen tip 2A is maintained.

[0007]

FIG. 1 is a longitudinal sectional view showing the structure of a first embodiment of a knock type writing instrument according to the present invention. In the first embodiment, the outer cylinder 1
Felt-tip pen refill 2 slidably disposed within,
A spring 3 for urging the refill 2 rearward, a clip portion 4 and a cylindrical knock portion 5 are provided. The clip portion 4 and the cylindrical knock portion 5 have a projection hole 7 provided in the outer cylinder 1. It is connected by the clip base 6 via the.

The knocking portion 5 is provided with a projection 9 which engages with one of the projecting hole 7 provided in the outer cylinder 1 and the storage hole 8 located behind the projecting hole 7. Part 4A
It is configured to engage or disengage with either the projecting hole 7 or the storing hole 8 by leverage movement of a fulcrum 10 provided at a lower front part of the knocking part 5 located between the rear part 4B and the knocking part 5. A portion of the fulcrum 10 which comes into contact with the flat surface 11 behind the refill 2 is a curved surface 12.

The gap H between the knock portion 5 behind the fulcrum 10 and the outer cylinder 1 gradually increases as the distance from the fulcrum 10 to the rear increases.
The rear end of the outer cylinder 1 on the fulcrum 10 side is shorter than the rear end of the outer cylinder 1 on the clip portion 4 side. Thereby causing the lever movement about a <br/> fulcrum 10, it can be reliably disengaged projections 9 the projecting hole 7 or housing holes 8.

In the first embodiment, the projection hole 7 also serves as a guide for the clip base 6 together with the engagement of the projection 9. FIG. 2 is an explanatory plan view of a rear portion of the outer cylinder in the first embodiment,
14 is a neck portion provided between the protruding hole 7 and the storage hole 8;
Reference numeral 16 denotes a counterbore that reaches the storage hole 8, and reference numeral 15 denotes a neck portion provided between the counterbore 16 and the storage hole 8.

In the first embodiment, when the knock portion 5 is knocked, the projection 9 engaged with the storage hole 8 of the outer cylinder 1 is moved.
(Shown by a chain line in FIG. 2) is a clip portion 4 and a knock portion 5.
At the same time, it is rotated clockwise about the fulcrum 10, disengages from the storage hole 8 and moves forward against the spring force of the spring 3.
Due to this movement, the refill 2 also moves forward, and thereafter, the curved surface 12 of the fulcrum 10 hits the lower rear end of the refill 2 and is urged rearward by the spring force of the spring 3.
The projection 9 rotates counterclockwise in the opposite direction to the projection hole 7 about the fulcrum 10 in the counterclockwise direction, and is more securely locked, so that the pen tip 2A is maintained in a state of protruding from the tip of the outer cylinder 1. And can be used for writing.

The pen tip 2A is shifted from this protruding state (writing state).
When the rear part 4B of the clip part 4 is pushed down or the tip part 4A is pulled up, the projection 9 locked in the projecting hole 7 is supported together with the clip part 4 and the knock part 5 by the fulcrum 10.
Is rotated clockwise around the center, and comes off from the protruding hole 7. The refill 2 moves rearward together with the clip portion 4 and the knock portion 5 by the spring force of the spring 3, and the pen tip 2 </ b> A As the housing is further housed, the projection 9 is rotated counterclockwise in the opposite direction about the fulcrum 10 together with the clip portion 4 and the knocking portion 5 to engage with the housing hole 8 as shown by the solid line in FIG. When stopped, the pen tip 2A is maintained in a state of being housed from the tip of the outer cylinder 1.

In the first embodiment, the projection 9 is formed by making the gap H between the knock portion 5 behind the fulcrum 10 and the outer cylinder 1 door-like.
And the projection hole 7 or the storage hole 8 can be easily and reliably engaged and disengaged.

FIG. 3 is a longitudinal sectional view showing the structure of a main part of the second embodiment. In this second embodiment, the guide of the clip base 6 also serves as the second storage hole 8A, The direction part and the part of the knock part 5 which comes into contact with the direction part, that is, the part of the projection 9 are formed as a curved surface 12 and a tapered surface 13, respectively. Further, the clearance H between the knock portion 5 behind the fulcrum 10 and the outer cylinder 1 is made larger than the height H 'of the projection 9, and the projection 9 and the projection hole 7 or the storage hole 8 can be easily and reliably engaged and disengaged. It has a configuration that can be used.

When the pen tip 2A of the refill 2 is stored, the clip base 6 comes into contact with the rear end of the second storage hole 8A. The clip base 6 and the projection 9 may both be in contact with the second storage hole 8A and the storage hole 8 respectively.
May be configured to abut on the rear end.

In the second embodiment, when the knock portion 5 is knocked, the clip base 6 locked in the storage hole 8A of the outer cylinder 1 is guided into the storage hole 8A against the spring force of the spring 3. While moving, the clip portion 4 and the knock portion 5 move forward and the refill 2 also moves forward. On the other hand, when the projection 9 engaged with the storage hole 8 separates from the storage hole 8, The projection 9 is rotated clockwise around the fulcrum 10 together with the knock portion 5, the projection 9 is disengaged from the storage hole 8 and moves forward, and the projection hole 9 is brought into contact with the curved surface 12 of the refill 2 and the tapered surface 13 of the projection 9. 7 is pivoted counterclockwise about the fulcrum 10 and locked, so that the pen tip 2A
Is maintained in a state protruding from the front end of the outer cylinder 1, and can be used for writing.

In order to store the pen tip 2A from the protruding state of the pen tip 2A, when the rear part 4B of the clip part 4 is pushed down or the tip part 4A is pulled up, the projection 9 locked in the projection hole 7 is formed. Is pivoted clockwise about the fulcrum 10 together with the clip portion 4 and the knock portion 5 to separate from the projecting hole 7 and the refill 2 moves the clip portion 4 and the knock portion 5 rearward by the spring force of the spring 3. At approximately the same time when the clip base 6 is locked at the rear end of the storage hole 8A, the projection 9 rotates counterclockwise about the fulcrum 10 together with the clip portion 4 and the knock portion 5 to rotate the storage hole 8A. , The pen tip 2A is maintained in a state of being housed from the tip of the outer cylinder 1.

In the second embodiment, the clearance H between the knocking portion 5 behind the fulcrum 10 and the outer cylinder 1 is made larger than the height H 'of the projection 9 so that the projection 9 and the projection hole 7 or the storage hole 8 can be formed. Can easily and easily be disengaged.

FIG. 4 is a longitudinal sectional view showing the structure of the main part of the third embodiment. In the third embodiment, the guide of the clip base 6 also serves as the storage hole 8A, and the rear corner of the refill 2 is ,
The portion of the knocking portion 5 that comes into contact therewith is a tapered surface 13 and a projection 9 that engages with and disengages from the projecting hole 7 is provided on the lower surface of the distal end portion of the clip portion 4.

In the third embodiment, when the knock portion 5 is knocked, the clip base 6 locked in the storage hole 8A is moved along with the clip portion 4 and the knock portion 5 along the storage hole 8A by the spring force of the spring 3. Then, the tapered surface 13 of the projection 9 comes into contact with the curved surface 12 at the lower rear end of the refill 2 and is urged rearward by the spring force of the spring 3. 2 will also move forward. When the projection 9 of the clip portion 4 reaches the projecting hole 7, the clip portion 4 and the knock portion 5 center around the fulcrum 10 because the refill 2 and the portion of the knock portion 5 abutting on the refill 2 are tapered. When the projection 9 is locked in the projection hole 7 by rotating in the counterclockwise direction, the pen tip 2A is maintained in a state of protruding from the tip of the outer cylinder 1 and can be used for writing.

In order to store the pen tip 2A from the protruding state of the pen tip 2A, when the rear part 4B of the clip part 4 is pushed down or the tip part 4A is pulled up, the projection 9 locked in the projection hole 7 is formed. Is rotated clockwise about the fulcrum 10 together with the clip portion 4 and the knock portion 5, disengages from the projecting hole 7, moves rearward by the spring force of the spring 3, and the clip base 6 is moved to the storage hole 8.
The pen tip 2A is maintained in a state of being housed from the front end of the outer cylinder 1 by being brought into contact with and locked to the rear end of A.

Also in the third embodiment, the clearance H between the knocking portion 5 behind the fulcrum 10 and the outer cylinder 1 is made larger than the height H 'of the projection 9, so that the projection 9 and the projection hole 7 can be disengaged. Can be easily and reliably performed.

As described above, in the first to third embodiments, the protrusion 9 is engaged with or disengaged from the protrusion hole 7 and the storage hole 8 by the lever movement by the fulcrum 10 provided on the knock portion 5, or the protrusion 9 is provided. Are engaged with and disengaged from the projecting hole 7 and the clip base 6 is engaged with the storing hole 8A, and the clip portion 4, the knock portion 5 and the like do not use elasticity. It is possible to extend the life without fatigue.

Further, the lever movement using the fulcrum 10 is used, and the clearance between the knock portion 5 behind the fulcrum 10 and the outer cylinder 1 is gradually increased as the distance from the fulcrum 10 to the rear is increased. By making the gap H larger than the height H 'of the projection 9, the engagement and disengagement of the projection 9, the projection hole 7 and the storage hole 8 can be easily and reliably made. By making the rear end of the fulcrum 10 side shorter than the rear end, engagement and disengagement can be more reliably and easily performed.

Further, when the portable terminal is held in a pocket or the like with the pen tip 2A protruding, the tip 4A of the clip portion 4 is pulled up, so that the pen tip 2A can be automatically stored. It does not stain clothing and the like.
In the first to third embodiments, the case where the knock portion 5 is cylindrical has been described, but it is needless to say that the knock portion 5 may be column-shaped.

[0026]

As described above, according to the present invention, the projection 9 is engaged and disengaged from the projecting hole and the accommodating hole by the lever movement by the fulcrum 10 provided on the knocking portion 5, so that the elasticity is improved. As we do not use, we are not tired by long-term use,
Not only can the service life be extended, but also the lever movement by the fulcrum 10 is used, so that the projection 9 and the projection hole,
Engagement and disengagement with the storage hole can be easily and reliably performed.
When holding the clip portion 4 in a pocket or the like in the protruding state of A, the tip portion 4A of the clip portion 4 is pulled up.
A can be automatically stored, and there is an effect that there is no possibility that clothes and the like such as pockets are stained.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a configuration of a first embodiment of a knock-type writing instrument according to the present invention in a pen tip storage state.

FIG. 2 is an explanatory plan view showing a rear portion of the outer cylinder in the first embodiment.

FIG. 3 is a longitudinal sectional view showing a configuration of a main part in a pen tip stored state of a second embodiment.

FIG. 4 is a longitudinal sectional view showing a configuration of a main part in a pen tip stored state of a third embodiment.

[Explanation of symbols]

 Reference Signs List 1 outer cylinder 2 (sign pen) refill 2A pen tip 3 elastic body (spring) 4 clip portion 5 knock portion 6 clip base 7 projecting hole 8 storing hole 8A storing hole 9 protrusion 10 fulcrum 11 flat surface 12 curved surface 13 tapered surface

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B43K 24/00-24/18

Claims (8)

(57) [Claims] 1. A refill (2) slidably disposed in an outer cylinder (1), an elastic body (3) for urging the refill (2) rearward, and an inner part of the outer cylinder (1). , A knock portion (5) and a clip portion (4) provided outside, respectively.
The clip portion (4) and the knock portion (5) are connected by a clip base (6) through a hole (7) provided in the outer cylinder (1), and a fulcrum ( A knock-type writing implement characterized in that the lever (2) of the refill (2) is disengaged from the projecting / storage hole and the projection (9) by the leverage movement according to (10), and the projecting / storage hole for maintaining the stored state, respectively. . 2. The knock-type writing instrument according to claim 1, wherein a portion of the knock portion (5) that contacts the lower part of the refill (2) and / or the lower end thereof is a curved surface (12) or a tapered surface (13). 3. The knock-type writing instrument according to claim 1, wherein a portion of the knock portion (5) abutting on a lower part of the refill (2) and / or the rear end thereof is a fulcrum (10). 4. A device corresponding to the lever movement of the knock portion (5).
In addition, the gap (H) between the knocking portion (5) behind the fulcrum (10) and the outer cylinder (1) is farther away from the fulcrum (10).
The knock-type writing instrument according to claim 3, wherein the writing instrument gradually increases in size . 5. A knock portion (5) behind a fulcrum (10).
The knock-type writing instrument according to any of claims 1 and 2, wherein a gap (H) between the outer cylinder (1) and the projection (9) is larger than a height (H ') of the projection (9). 6. The knock-type writing instrument according to claim 1, wherein the rear end of the outer cylinder (1) closer to the fulcrum (10) is shorter than the rear end of the clip (4). 7. A knock-type writing instrument according to claim 1, wherein a projection (17) is provided on the outer cylinder (1) to help the projection (9) come off from the hole. 8. The knock-type writing instrument according to claim 1, wherein the knock portion (5) is cylindrical or columnar.