JP4444646B2 - Writing instrument with clip - Google Patents

Description

  The present invention relates to a writing instrument having a clip, and more particularly, to a writing instrument in which a clip is disposed so as to be tiltable in a seesaw shape with respect to the axial cylinder or the cap, with a connecting portion between the clip and the axial cylinder or the cap as a fulcrum.

  Conventionally, writing instruments having clips are well known. In a writing instrument having a conventional clip, only the tip end side of the clip can be sandwiched between cloths such as pockets. Therefore, in order to sandwich a cloth such as a pocket on the rear end portion on the opposite side to the engaging portion, the direction opposite to the engaging portion of the clip is used, as in Japanese Utility Model Publication No. 3-62891 “Cap Holder of Mechanical Pencil”. It was necessary to form a new locking part extending to

  Further, as a writing instrument having a clip, as disclosed in Japanese Utility Model Laid-Open No. 63-51788, “writing clamping tool” and Japanese Patent Laid-Open No. 2001-146094, “clip mounting device for writing instrument” A structure is also well known in which the locking portion on the front end side is disposed so as to be separable from the shaft tube or the cap by pressing the extended rear end portion.

Such a structure makes it easy to hold a holding part such as a pocket because a gap can be formed between the locking portion and the shaft tube or the cap, so that a holding part having a certain thickness, such as thick clothes, is held. It is effective.
"Japanese Utility Model Publication No. 63-51788" "Japanese Patent Laid-Open No. 2001-146094" “Japanese Utility Model Publication No. 3-62891”

  However, the structure that allows the locking portion on the front end side to be separated from the shaft tube or the cap by pressing the rear end portion that extends to the rear end side of the clip always maintains the state in which the rear end portion is pressed. There was a need.

  In view of the above-described conventional problems, an object of the present invention is to provide a writing instrument having a clip that can easily hold a relatively thick sandwiched object by a simple operation.

  The present invention is a writing instrument having a clip with a clip and a shaft cylinder or a cap connected to the shaft cylinder or the cap, the clip being disposed so as to be tilted in a seesaw shape. A protrusion is formed on the wall surface toward the shaft cylinder or the cap, and a protrusion is formed on the shaft cylinder or cap facing the protrusion, and a spring material is provided between the protrusion and the protrusion to tilt the clip. In a state where the rear end portion of the clip is inclined away from the shaft cylinder or the cap as compared with the front end portion of the clip by being tilted in conjunction with the clip and disposed so as to be inclined in a direction opposite to the inclination of the clip. Compared to the rear end portion of the clip, the state in which the tip portion maintains an inclination separated from the shaft tube or the cap can be switched.

  The rear end of the clip is formed to extend from the fulcrum to the rear end of the shaft cylinder, and a clamped object can be sandwiched between the outer wall of the shaft cylinder or the cap facing the rear end of the clip. Features.

  A locking projection is formed on the bottom wall of the rear end of the clip.

  The present invention can provide a writing instrument having a clip that can easily hold a relatively thick sandwiched object by a simple operation.

  In a writing instrument having a clip, the object of easily holding a relatively thick sandwiched object with a simple operation is realized with a simple structure.

  A writing instrument 1 having a clip shown in FIGS. 1 to 5 is stored in a state where a ballpoint pen refill 8 is urged by a coil spring 12 in the direction of the rear end 2b of the shaft cylinder. The structure of the ballpoint pen refill 8 is conventionally known, and ink for writing instruments (not shown) is accommodated in the ink accommodating tube 9, and the ball is rotatably held at the tip of the ink accommodating tube 9. The ballpoint pen tip 11 is mounted via a tip holder 10.

  A mechanism for causing the ball-point pen tip 11 to project and retract from the tip opening 2a of the shaft tube 2 is also known in the past. Briefly, the rotary cam 14 slides back and forth on the bottom wall surface of the shaft tube 2 and rotates. A cam groove (not shown) is formed, and a protrusion formed on the rotating cam 14 is engaged with the cam groove. At the rear end of the rotary cam 14, a knock body 13 having a cam portion for sliding and imparting rotation to the rotary cam 14 is provided at the rear end, and the rear end portion of the knock body 13 is located outside the shaft rear end 2b. It is the structure arrange | positioned in the state protruded toward the direction.

  A clip 3 is attached to the rear end of the shaft tube 2. As shown in FIGS. 1 and 2, the clip 3 has a connecting portion with the shaft tube 2 as a fulcrum 4, and the clip 3 can be tilted in a seesaw shape with respect to the shaft tube 2, compared to the end portion 3 a side of the clip. The end 3b side is disposed while maintaining an inclined state separated from the shaft tube 2.

  Further, on the bottom wall surface of the clip 3, a substantially triangular convex portion 5 extending toward the axial tube 2 side and a substantially triangular projection portion 6 are formed on the axial tube 2 facing the convex portion 5. . A substantially U-shaped spring material 7 is disposed between the convex portion 5 and the projecting portion 6, and the rear end portion 3b extending to the rear end 2b side of the shaft tube 2 of the clip 3 is pressed (FIG. 2, 3, 4 in the direction of arrow M) or by lifting the tip 3 a side of the clip (in the direction of arrow F in FIGS. 2, 3, 4), the tip 3 a of the clip 3 is disposed so as to be separated from the shaft cylinder 2. is there.

  As shown in FIGS. 1 and 2, the rear end portion 3b of the clip 3 extending toward the rear end 2b side of the clip 3 is pressed from the inclined state in which the rear end portion 3b is separated from the shaft tube 2 compared to the tip end portion 3a of the clip ( 2, 4, or 4, or by lifting the tip 3 a side of the clip (in the direction of arrow F in FIGS. 2, 3, 4), the fulcrum 4 of the connecting portion between the clip 3 and the shaft tube 2, When the contact T between the projection 6 and the spring material 7 is located on the shaft tube rear end 2b side with respect to the line J passing through the contact S between the convex portion 5 and the spring material 7, the spring material 7 is tilted by the clip 3. In conjunction with this, the clip 3 is inclined in the opposite direction to the inclination of the clip 3, and the elastic force of the spring material 7 that has worked on the clip rear end 3 b changes to the clip front end 3 a. As a result, as shown in FIG. 4, the tip 3a is switched to an inclined state separated from the shaft tube 2 as compared with the rear end 3b of the clip, and this state is maintained.

  Specifically, as shown in FIGS. 1 and 2, in the inclined state in which the rear end 3 b is separated from the shaft tube 2 as compared to the tip 3 a of the clip, the pressing of the rear end 3 b (see FIGS. 2, 3, and 4). By lifting the tip 3a side of the clip (in the direction of arrow M) or in the direction of arrow F in FIGS. 2, 3 and 4, the tip 3a of the clip is separated from the opposing shaft cylinder 2, and the fulcrum 4 and convex portion 3 until the contact T between the projection 6 and the spring material 7 is positioned on the line J passing through the contact S between the spring material 7 and the spring material 7 (the state shown in FIG. 3). When the lifting of the part 3a side (in the direction of arrow F in FIGS. 2, 3 and 4) is stopped, the original state (the state of FIGS. 1 and 2) is restored by the elastic force of the spring material 7. When the contact point T between the projection 6 and the spring material 7 is located on the shaft cylinder rear end 2b side with respect to the line J passing through the contact point S between the fulcrum 4 and the convex portion 5 and the spring material 7, the spring material 7 is In conjunction with the tilt of the clip 3, the clip 3 is tilted in the direction opposite to the tilt of the clip 3, and the elastic force of the spring material 7 that has worked on the clip rear end 3b side changes to the clip front end 3a side. As a result, as shown in FIG. 4, the tip portion 3 a is switched to an inclined state separated from the shaft tube 2 as compared with the rear end portion 3 b of the clip, and this state is maintained.

  In order to hold a clamped object (not shown) between the bottom wall 3c at the tip end of the clip 3 and the shaft tube 2, the tip end portion 3a of the clip is switched to a state separated from the shaft tube 2 as shown in FIG. Then, a sandwiched object is inserted between the shaft cylinder 2 facing the tip portion 3a of the clip, and the tip portion 3a of the clip is projected with respect to the line J passing through the contact point S between the fulcrum 4 and the convex portion 5 and the spring material 7. 6 and the spring material 7 are pressed until the contact T is positioned on the side of the shaft tube tip opening 2a (in the reverse direction of the arrow F in FIGS. 2, 3 and 4) or the rear end 3b of the clip is lifted (FIG. 2, 3 and 4), the elastic force of the spring material 7 that has worked on the clip front end portion 3a side is changed to the clip rear end portion 3b side. As a result, as shown in FIGS. 1 and 2, the rear end portion 3b is switched to the inclined state separated from the shaft tube 2 as compared with the front end portion 3a of the clip, and this state is maintained, so that the sandwiched object can be sandwiched. it can.

  In the present invention, since the tip end portion 3a of the clip can be maintained in a state of being separated from the shaft tube 2, it is not always necessary to press the rear end portion, and a relatively thick sandwiched object can be easily sandwiched. Further, by forming the rear end portion 3b extending to the rear end side of the shaft tube 2 of the clip 3, as shown in FIG. 5, as between the bottom wall 3c of the tip portion of the clip and the shaft tube 2, With the writing tool standing on the pen stand 16, the sandwiched object 15 can be held between the shaft cylinders 2 facing the bottom wall 3 d at the rear end of the clip. In addition, it is preferable to form a locking projection on the bottom wall 3c at the front end of the clip and the bottom wall 3d at the rear end, since the clamping force can be improved.

  The writing instrument 21 having the clip shown in FIGS. 6 to 8 includes a substantially triangular convex portion 25 extending toward the axial tube 22 side of the bottom wall surface of the clip 23, and a substantially triangular shape of the axial tube 22 facing the convex portion 25. A writing instrument is used in the same manner as in Example 1 except that a receiving member 28 in contact with the protruding portion 25, a receiving member 29 in contact with the protruding portion 26, and a coiled spring material 27 are disposed between the protruding portion 26 having a shape. It has gained.

  As shown in FIG. 6, the rear end 23 b extending from the inclined end where the rear end 23 b is separated from the shaft tube 22 to the rear end 22 b side of the clip 23 is pressed against the rear end 22 b of the clip 23 (FIG. 6). , 7, 8 in the direction of arrow m) or by lifting the tip end 23a side of the clip (in the direction of arrow f in FIGS. 6, 7, 8), the fulcrum 24 and the contact point s between the convex portion 25 and the receiving member 28 are passed. When the contact point t between the projection 26 and the receiving member 29 is located on the rear end 22b of the shaft cylinder with respect to the line j, the spring material 27 is inclined in the direction opposite to the inclination of the clip 23 in conjunction with the inclination of the clip 23. Then, the elastic force of the spring member 27 that has worked on the clip rear end portion 23 b side changes to the clip front end portion 23 a side through the receiving member 28. As a result, as shown in FIG. 8, the tip end portion 23a is switched to the inclined state separated from the shaft cylinder 2 as compared with the rear end portion 23b of the clip, and this state is maintained.

  In the present embodiment, for the sake of convenience, the formation positions of the projections and projections are formed on the same perpendicular to the axis of the shaft cylinder, but the formation positions of the projections and projections are not particularly limited, and are fulcrums. Since the state where the contact point between the projection and the spring material or the receiving member is located on the line passing through the contact point between the convex portion and the spring material or the receiving member is the switching point of the tilting of the clip, Considering the gap that can be held between the shaft cylinders facing the inner wall of the rear end, the contact between the projection and the spring material or the receiving member is pivoted with respect to the contact point between the fulcrum and the convex portion and the spring material or the receiving member. You may form in the front end side or rear end side of a pipe | tube.

  Further, the shape of the convex portion and the protruding portion is not limited to a substantially triangular shape, and can be appropriately selected and used within a range that does not hinder the tilting operation of the clip, such as an arc shape or a substantially square shape. The pressing force or lifting force required for switching the inclined state of the clip is generally determined by the spring force of the spring material and the shapes of the convex portion and the protruding portion. The smaller the spring force of the spring material, the smaller the pressing force or lifting force required for switching, and the larger the spring force of the spring material, the higher the pressing force or lifting force necessary for switching, so the clamping force is higher. The pressing force or lifting force required for switching is smaller when the convex and convex shapes are approximately triangular or arcuate, such as the convex portion, the convex portion and the spring material, or the smaller contact area between the convex portion and the convex portion and the receiving member. Becomes smaller.

  The shape of the clip is not particularly limited, however, by extending the rear end of the clip from the fulcrum to the rear end of the shaft tube, it becomes possible to hold a clamped object at the rear end of the clip. Since it is not necessary to form the locking portion, the appearance is not deteriorated.

  Although the present embodiment has been described in detail above, the present invention is not limited to the above-described embodiment, and within the scope of the gist of the present invention described in the claims, such as arranging a clip on a writing instrument cap. Various changes can be made.

It is a longitudinal cross-sectional view which shows the writing instrument which has a clip in Example 1. FIG. 2 is an enlarged vertical cross-sectional view of a main part, partially omitted in FIG. 1. FIG. 2 is an enlarged vertical cross-sectional view of a main part, partially omitted, showing a state where a rear end of a clip in FIG. 1 is pressed. FIG. 2 is an enlarged vertical cross-sectional view of a main part, partially omitted, showing an inclined state in which a front end portion is separated from a shaft cylinder compared to a rear end portion in FIG. 1. It is an external view which shows the state which clamped the clamping object at the rear-end part of the clip. It is a principal part expanded longitudinal cross-sectional view which abbreviate | omitted a part of writing instrument which has a clip in Example 2. FIG. FIG. 7 is an enlarged vertical cross-sectional view of a principal part, partially omitted, showing a state in which the rear end of the clip in FIG. 6 is pressed. FIG. 7 is an enlarged vertical cross-sectional view of a principal part, partially omitted, showing an inclined state in which a tip part is separated from a shaft cylinder compared to a rear end part in FIG. 6.

Explanation of symbols

1,21 Writing instrument 2,22 Shaft tube 3,23 Clip 3a, 23a Tip 3b, 23b Rear end 3c, 23c Bottom wall 3d, 23d Bottom wall 4, 24 Support point 5, 25 Protrusion 6, 26 Protruding part 7, 27 Spring material 28, 29 Receiving member J Line connecting the contact point between the projecting part and the spring material j Line connecting the contact point between the projecting part and the receiving member S Contact point between the projecting part and the spring material T Protrusion Contact point between the projection and the spring material s Contact point between the projection and the receiving member t Contact point between the projection and the receiving member

Claims (3)

A writing instrument having a clip having a clip and a shaft cylinder or a cap as a fulcrum, the clip being disposed in a seesaw-like manner so that the clip can be tilted with respect to the shaft cylinder or cap. Protrusions extending toward the cylinder or cap side, and protrusions are formed on the shaft cylinder or cap facing the protrusions, and a spring material is connected between the protrusions and the protrusions in conjunction with the tilt of the clip. The rear end of the clip is maintained from the state where the rear end of the clip is separated from the shaft cylinder or the cap as compared with the front end of the clip by being tilted and arranged so as to be inclined in the direction opposite to the inclination of the clip. A writing instrument having a clip, characterized in that it can be switched between a state in which the tip part maintains an inclination apart from the shaft tube or the cap as compared to the end part. The rear end of the clip is formed to extend from the fulcrum to the rear end of the shaft cylinder, and a clamped object can be sandwiched between the outer wall of the shaft cylinder or the cap facing the rear end of the clip. A writing instrument having a clip according to claim 1. The writing instrument having a clip according to claim 2, wherein a locking projection is formed on a bottom wall of a rear end portion of the clip.

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