JP2001180185A - Out-of-the-box writing instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problems that there exists the possibility of contaminating clothing due to the projection of the nib by carelessly pressing a knocking member when a projectable and retractable writing instrument is inserted, for example, into a pocket after the use, low operating load is not necessarily sufficient for the operability of the instrument and certainty of locking the projection or the retraction of a nib by an operation and actual feeling of operation are required. SOLUTION: The inner projection of a clip is engaged with an engaging part of a refill or the inner projection of a member connected with the refill through an overriding engagement for locking the projection of the nib. At the time of the overriding engagement, the end position of a sheath is set so that the moving distance of the operating member is the midway distance of moving before the nib is projected from a projecting hole. Then, the surface of the engaging part and the projecting part of the inner projection are formed so that the moving resistance load of the operating member becomes a maximum value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer casing having a pen tip projecting hole at a tip thereof, a mounting base for the outer casing, a deformed plate portion which is an intermediate portion, and an inner face formed on an inner surface of the deformed plate portion. A clip having a protruding portion is arranged, and a refill body having a pen tip at the tip and containing ink inside is movably accommodated inside the exterior body in a state of being urged rearward by a coil spring, and operated. By moving the member, the refill body or the connecting member with the refill body is moved so that the pen tip protrudes from the pen tip protruding hole, and the member connected with the refill body or the refill body is moved inwardly of the clip. The pen tip is maintained in a protruding state from the exterior body by engaging with the operating member, and the operating member is moved again to release the engagement, thereby urging the coil spring rearward. On retractable writing instrument to accommodate the pen tip to the exterior body by.

[0002]

2. Description of the Related Art Conventionally, in a retractable writing instrument having a sliding member such as a knocking ballpoint pen, the sliding member is made of a material having a high abrasion resistance, a low coefficient of friction and a good slipperiness. It is used. For example, a polyoxymethylene resin or the like containing a lubricant is used, and the writing instrument has a good knocking operability and a good knocking feeling. Also,
The repelling force of the coil spring that urges the refill as the ink storage member rearward is set to a low load value so that the pen tip can be moved in and out with as little force as possible.

[0003]

In the prior art as described above, the knocking operability and knocking feeling of the writing implement are improved, but when the writing implement is inserted into a pocket, for example, after writing is used, the knocking is not improved. There is a fear that the knock member is easily pressed, the pen tip protrudes, and the clothes are soiled. In addition, the operability of the retractable writing instrument is not limited to a low operation load, but also requires a certainty of the locking by the operation and a feeling of operation.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has a mounting base portion and an intermediate portion for an exterior body having a pen tip projecting hole at a tip thereof. A clip having a deformed plate portion and an inward projection on the inner surface of the deformed plate portion is arranged, and a refill body having a pen tip at the tip and containing ink inside the outer body is rearwardly moved by a coil spring. The pen tip is projected from the pen tip projection hole by moving the operation member to move the connecting member with the refill body or the refill body by moving the operating member to accommodate the refill body or the refill body or By engaging a member connected to the refill body with an inward protrusion of the clip, the pen tip is maintained in a protruding state from the exterior body, and by moving the operating member again, the engagement is achieved. A retractable writing instrument that releases the pen tip in an exterior body by a rearward biasing force of the coil spring, wherein the inward projection of the clip and the inward projection of the refill body or a member connected to the refill body. The engagement for the protrusion of the nib with the engaging portion is made by over-engagement engagement. When the over-engagement engagement is over, the pen tip protrudes from the projecting hole by the moving distance of the operating member. The distal end position of the exterior body is set so as to be the previous movement halfway distance, and at this time, the surface of the engaging portion and the protruding portion of the inward protruding portion such that the movement resistance load of the operation member becomes a maximum value. It is the gist that was formed.

[0005]

1 to 9 show an example. Shaft barrel 1
A front shaft 2 is detachably attached to the front of the vehicle by screwing or the like. A grip 3 made of a soft resin or rubber material is fixed to the front shaft 2.
A repelling member 4 such as a coil spring is attached to the inside of the front shaft 2 with its front end held between inner holes of the front shaft 2. Inside the shaft cylinder 1, a writing refill 5 such as a ball-point pen or a correction tool is urged rearward by the repelling member 4 and is arranged to be able to move back and forth. A pressing body 6 is attached to the rear of the barrel 1 so as to be movable back and forth. FIG.
2 shows a state in which the pen tip 5 a of the refill 5 is stored, and FIG. 2 shows a state in which the pen tip 5 a protrudes from the front shaft 2. In each of the drawings, a case in which a writing refill 5 such as a ball-point pen or a correction tool is disposed in the barrel 1 is illustrated. However, a mechanical pencil or a sharp center shaft unit is disposed in the barrel 1. It may be something.

FIG. 4 is an enlarged view of only the rear portion, which is the protruding locking structure of the pen tip. A refill 5 in which ink is enclosed by a float 7 and a high-viscosity fluid 7 a is disposed in the shaft cylinder 1, and a pressing body 6 having a sliding cylinder portion 8 and an engagement projection 9 is provided at the rear end of the refill 5. In contact. A lateral hole 1a is formed in the shaft cylinder 1, and the engaging protrusion 9 is formed in the lateral hole 1a.
Is slidably fitted in the front and rear. A clip 10 is attached to the barrel 1, and the clip 10 is provided with a ball 10 a with which the engaging projection 9 engages. still,
Although the front and rear positions of the engaging projection 9 and the ball 10a will be described later, the climbing slope of the engagement projection 9 abuts on the ball 10a of the clip 10, and the running resistance load due to the climbing contact between the climbing slope and the ball 10a. Are sharply increased to reach the maximum value, so that the tip of the pen tip 5a of the refill 5 is not yet protruded from the tip of the front shaft 2.

FIG. 5 shows the positional relationship between the engagement projection 9 and the ball 10a from the pen tip storage state of FIG. 3 to the pen tip projection locking state and back to the pen tip storage state again. It is shown as a perspective view divided into seven scenes (only the engagement projection 9 and the ball 10a of the clip 10 are viewed from the rear side in FIG. 3). No. The first scene is the initial pen tip storage state,
No. 2 moves the pressing body 6, and engages the convex portion 9 and the ball 10a.
Is in contact with No. 3, No. No. 4 is the state of movement of the pressing body 6, No. No. 5 is a state in which the engagement projection 9 and the ball 10a are engaged with each other to maintain the pen tip protruding state; No. 6 further moves the pressing body 6 to accommodate the pen tip, and in the state where the engagement is released, No. 7 is No. 7 again due to the elasticity of the elastic member 4. It returns to the shape of 1.

[0008] The engagement projection 9 engages the ball 1 when the pen tip is engaged.
0a, an over-engagement portion 11 protruding in the lateral direction.
And has a climbing inclined surface 11a which is a surface that first comes into contact with the ball 10a. The deviation angle when the engaging projection 9 gets over the ball 10a is determined by the climbing inclined surface 11a. In this example, it is set to 45 °. Also,
Sometimes 10a is No. In the state of No. 2, there is line contact in which the corner of the climbing slope 11a and the ball 10a abut.

Next, the operation will be described with reference to FIGS. When the pressing body 6 is moved forward against the resilience of the resilient member 4 from the state of FIG. 3, the movement resistance load of the pressing body 6 gradually increases (FIG. 5, No. 1, FIG. 6, FIG. 7).
When the movement of the pressing body 6 is continued, the climbing inclined surface 11a of the engaging projection 9 comes into contact with the ball 10a of the clip 10. When the movement is further continued, the running resistance load rises sharply due to the running contact between the climbing inclined surface and the ball 10a and reaches the maximum value. At this time, the tip of the pen tip 5a of the refill 5 has not yet protruded from the tip of the front shaft 2 (see FIG. 5, No. 2, 3, FIG. 6, and FIG. 8). When the pressing body 6 continues to move further, the pen tip 5a protrudes from the front end of the front shaft 2. However, since the climbing contact between the climbing slope 11a and the ball 10a has been completed, the movement resistance load is reduced. It corresponds to the elasticity of the body 4 (FIG. 5, No. 3,
4, FIG. 6, FIG. 9). Here, when the pressing of the pressing body 6 is released, the engaging projection 9 and the ball 10a are engaged, and the protruding state of the pen tip 5a is maintained (see FIG. 5 No. 5). Pen tip 5
In order to change the position a from the protruding state to the retracted state, the pressing body 6 is moved forward again to release the engagement between the engaging projection 9 and the ball 10a (see Nos. 6 and 7 in FIG. 5). Note that the pen tip 5a
The movement resistance load of the pressing body 6 at the time of storage is within a range not exceeding the load in FIG.

[0010]

According to the present invention, a deformed plate portion which is an intermediate portion between a mounting base and an inner portion of the deformed plate portion is provided on the outer side of the outer case having a pen tip projecting hole at the tip. And a clip having a pen tip at the tip and containing ink inside is housed movably back and forth in a state of being urged rearward by a coil spring. By moving the refill body or the connecting member with the refill body, the pen tip is projected from the pen tip protruding hole, and the refill body or the member connected with the refill body is engaged with the inward projection of the clip. The pen tip is kept in a protruding state from the exterior body by being combined, and the operating member is moved again to release the engagement, and the rear urging force of the coil spring is used. A pen tip, wherein the pen tip includes an inward projection of the clip and an engaging portion of the refill or a member connected to the refill which engages with the inward projection. Engagement for locking is performed by over-engagement engagement, and when overcoming this over-engagement engagement, the moving distance of the operating member is equal to the intermediate movement distance before the pen tip protrudes from the protrusion hole. Along with setting the tip position, at this time, the surface of the engaging portion and the protruding portion of the inward protrusion are formed so that the movement resistance load of the operation member becomes a maximum value. When inserting this writing instrument,
There is no danger that the knock member will be inadvertently pressed and the pen tip will protrude, and the clothes will not be soiled. In addition, it is possible to simultaneously obtain the certainty of the locking / unlocking by the operation and the feeling of the operation.

[Brief description of the drawings]

FIG. 1 is an external view illustrating the present invention.

FIG. 2 is an external view showing the present invention.

FIG. 3 is a partial sectional view taken along line AA of FIG. 1;

FIG. 4 is an enlarged longitudinal sectional view of only a rear part of FIG. 1;

FIG. 5 is a partial perspective view showing a positional relationship between an engagement protrusion 9 and a ball 10a.

FIG. 6 is a diagram illustrating an operation.

FIG. 7 is a diagram illustrating an operation.

FIG. 8 is a diagram illustrating an operation.

FIG. 9 is a diagram illustrating an operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shaft cylinder 1a Side hole 2 Front shaft 3 Grip 4 Repelling member 5 Refill 6 Pressing body 7 Float 7a High-viscosity fluid 8 Sliding cylinder part 9 Engagement convex part 10 Clip 10a Ball 11 Engagement climbing part 11a Riding slope

Claims (1)

[Claims] 1. A clip having, outside a package having a pen tip projecting hole at a tip thereof, a mounting base portion for the package, a deformed plate portion being an intermediate portion, and an inward projection formed on an inner surface of the deformed plate portion. Arranged inside the exterior body, the refill body that has a pen tip at the tip and contains ink inside is housed so as to be able to move back and forth while being urged backward by a coil spring,
By moving the operation member, the refill body or the connecting member with the refill body is moved so that the pen tip protrudes from the pen tip protruding hole, and the refill body or the member connected with the refill body is inwardly protruded from the clip. The pen tip is maintained in a protruding state from the exterior body by engaging with the portion, and the operating member is moved again to release the engagement, and the pen tip is exteriorized by the rearward biasing force of the coil spring. In a retractable writing instrument to be housed in a body, the pen tip protrudes between an inward protrusion of the clip and an engaging portion of the refill body or a member connected to the refill body with the inward protrusion. And the moving distance of the operating member before the pen tip protrudes from the projecting hole when moving over the crossing engagement. Along with setting the tip position of the exterior body so as to be a middle distance, at this time, the surface of the engagement portion and the projection of the inward projection were formed so that the movement resistance load of the operation member became a maximum value. A retractable writing instrument characterized by the following.