JP2012192730A - Clip for writing utensil, and writing utensil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clip for a writing utensil and the writing utensil avoiding an increase in rigidity of the clip.SOLUTION: In the writing utensil 1, a notch 24 is formed in a clip body 21 on the back side of a coupling part 22 coupled to a top 5. As a result, the clip body 21, that is, a lower thinned part 21b is formed extremely thinly in a coupling part 22 forming region as compared with a case that the notch 24 is not formed in the clip body 21. As a result, the rigidity is extremely reduced at an attaching side end part of the clip 6. Thus, when the clip 6 is lifted and opened, excessive stress concentration is avoided by the coupling part 22 in the clip 6. Thus, the clip 6 is prevented from being broken. In addition, engagement between a first engaging pawl 32 and an engaging groove 33 and engagement between a second engaging pawl 35 and a protrusion 34 prevent floating of a decorative member 23 and an upper thinned part 21a from the surface of the lower thinned part 21b even when the clip 6 is lifted and opened.

Description

  The present invention relates to a writing instrument clip and a writing instrument.

  In order to improve the appearance decoration and the visibility of the color type, for example, a clip of a writing instrument may be provided with a printing or decoration member of the same color as the ink. For example, Patent Document 1 discloses a technique for attaching a frame body, that is, a decorative member made of a resin material, to a locking groove formed on the entire circumference of the clip main body of the clip. In attaching the decorative member, the decorative member is fitted into the locking groove by elastic deformation.

Utility Model Registration No. 3047498 Utility Model Registration No. 3087668 JP 2010-137436 A

  In this technique, the clip thickness increases by the amount of the locking groove, so that the rigidity of the clip increases. Due to the increase in rigidity, the opening amount of the clip from the cap body or the shaft tube is reduced. These writing instruments are very difficult to use. The clip main body is connected to the cap main body and the shaft tube by a connecting portion formed at the attachment side end. As a result, if the clip is forcibly opened with the connecting portion as a fulcrum, the stress may be excessively concentrated on the attachment side end portion, and the clip may be broken.

  This invention is made | formed in view of the said situation, Comprising: It aims at providing the clip for writing instruments and writing instrument which can avoid the increase in the rigidity of a clip.

In order to achieve the above object, according to the present invention,
A plate-like clip body having a thickness;
A clip for a writing instrument comprising: a connecting portion that is formed at an attachment-side end portion of the clip body and connects the clip body to an attachment object;
The clip body attachment side end is provided with a notch that extends toward the tip end of the clip body and bisects the thickness of the clip body, and is provided above and below the notch. Each of the upper thin portion and the lower thin portion of the clip body is formed,
The notch extends to the tip side of the clip body from the connecting portion, and the connecting portion is provided with a clip for a writing instrument formed in the lower thin portion.

  In such a writing instrument cap, the notch bisects the thickness of the clip body at the attachment-side end portion where the connecting portion connected to the attachment object is formed. By forming this notch, an upper thin portion and a lower thin portion are formed at the attachment side end of the clip body. As a result, the rigidity at the attachment side end of the clip body is significantly reduced compared to the case where the cutout is not formed at the attachment side end of the clip body. Therefore, when the clip is lifted and opened from the attachment object with the connecting portion as a fulcrum, excessive stress concentration can be reliably avoided at the attachment side end of the clip body. In this way, the clip can be prevented from breaking. Such a writing instrument clip is incorporated into the writing instrument.

  The clip for a writing instrument according to the present invention is an annular decorative member fitted around the clip body, a first engaging body formed on the upper thin portion, and the first decorative member formed on the decorative member. And a first engaged body that engages with the engaging body. At this time, the decorative member is locked to the upper thin portion by the engagement of the first engaging body and the first engaged body. According to such a writing instrument clip, the first thinned body and the first engaging body are engaged with each other, thereby preventing the upper thin portion from being lifted with respect to the decorative member.

  The writing instrument clip according to the present invention includes an annular decorative member fitted around the clip body, a second engagement body formed on the decorative member, and the lower thin portion formed on the lower thin portion. A second engaged body that engages with the second engaging body. At this time, the decorative member is locked to the lower thin portion by the engagement between the second engaging body and the second engaged body. According to such a writing instrument clip, when the second engaged body and the second engaging body are engaged with each other, the decorative member can be prevented from being lifted with respect to the lower thin portion.

  ADVANTAGE OF THE INVENTION According to this invention, the clip for writing instruments which can avoid the increase in the rigidity of a clip, and a writing instrument can be provided.

It is a side view which shows roughly the structure of the writing instrument which concerns on one Embodiment of this invention. It is a vertical sectional view which shows roughly the structure of the writing instrument which concerns on one Embodiment of this invention. It is a side view which shows roughly the structure of the clip for writing instruments which concerns on one Embodiment of this invention. It is a top view which shows roughly the structure of the clip for writing instruments which concerns on one Embodiment of this invention. It is a perspective view which shows roughly the structure of the clip for writing instruments which concerns on one Embodiment of this invention. FIG. 6 is a vertical sectional view taken along line 6-6 in FIG. FIG. 7 is a partially enlarged cross-sectional view schematically showing a structure of a writing instrument clip corresponding to FIG. 6. It is a perspective view which shows roughly the structure of the decoration member which concerns on one specific example. FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. FIG. 10 is an end view taken along line 10-10 in FIG. 7. It is a vertical sectional view which shows a mode that a decoration member is attached roughly.

  FIG. 1 is a side view schematically showing the structure of a writing instrument 1 according to an embodiment of the present invention. The writing instrument 1 is, for example, a water-based ballpoint pen. The writing instrument 1 includes a cap 2 and a writing instrument body 3 that is inserted from the rear end of the cap 2 and attached to the cap 2. The cap 2 includes a cap body 4 that receives the tip of the writing instrument body 3 at the rear end, a crown 5 that is attached to the front end of the cap body 4, and a clip that is integrally connected to the crown 5 at the attachment end. 6. The clip 6 protrudes outside the cap body 4 through a notch 7 formed at the front end of the cap body 4. The crown 5 has a role as a decoration for the writing instrument 1 and a role as a base for the clip 6. The clip 6 may be formed separately from the crown 5. In the clip 6, the side connected to the crown 5 is defined as “attachment side”, and the side opposite to the attachment side is defined as “tip side”.

  FIG. 2 is a vertical sectional view along a virtual plane including the axis of the writing instrument 1. Referring also to FIG. 2, the writing instrument body 3 includes a refill 8 that holds ink and has a tip at the tip, and a rear shaft 9 that receives the rear end portion of the refill 8 and is attached to the refill 8. The refill 8 is filled with water-based ink. On the other hand, the cap body 4 of the cap 2 includes a cylindrical tubular body 11 and an attachment body 12 disposed in the tubular body 11 and connected to the tubular body 11. The cylindrical body 11 and the attachment body 12 are disposed coaxially with each other. The cylindrical body 11 receives the tip portion of the refill 8 at the rear end and the crown 5 at the front end. In this specification, the side where the crown 5 is mounted is defined as “front side”, and the side where the pen tip of the writing instrument body 3 is inserted is defined as “rear side”.

  The cylinder 11 is formed from a cylindrical hollow body opened at both ends, for example. The attachment body 12 is disposed near the front end of the cylinder body 11 in the cylinder body 11. An accommodation space 13 formed from a bottomed hole is formed at the rear end of the attachment body 12. The accommodation space 13 accommodates the tip of the writing instrument body 3. Thus, the chip of the refill 8 is held in an airtight state. On the other hand, the crown 5 is arranged in the crown crown outer cylinder portion 14 that is fitted to the inner circumferential surface of the cylindrical body 11 on the outer circumferential surface, and the crown crown outer cylinder portion 14 is disposed in the crown crown outer cylinder portion 14. And a crown-shaped inner cylinder portion 15 to be connected. The crown-shaped inner cylinder portion 15 is fitted to the outer peripheral surface near the front end of the attachment body 12 on the inner peripheral surface thereof. Thus, the crown 5 is attached to the cap body 4. The front end of the mounting body 12 protrudes outside the front end of the crown-shaped inner cylinder portion 15.

  The refill 8 and the rear shaft 9 constituting the writing instrument body 3, the cylinder 11 and the attachment body 12 constituting the cap body 4, the crown 5 and the clip 6 are, for example, polycarbonate (PC), acrylonitrile butadiene styrene (ABS), respectively. ), Polypropylene (PP), polyacetal (POM), acrylic, polyethylene terephthalate (PET), and polyethylene (PE). Moreover, the cylinder 11 and the attachment body 12 are formed by integral molding. Similarly, the crown 5 and the clip 6 are formed by integral molding.

  FIG. 3 is a side view schematically showing the structure of the cap 2 according to one embodiment of the present invention, and FIG. 4 is a plan view schematically showing the structure of the cap 2 according to one embodiment of the present invention. is there. As shown in FIGS. 3 and 4, the clip 6 includes a plate-shaped clip body 21 having a predetermined thickness, and is formed at the base side end of the clip body 21 to connect the clip body 21 to the crown 5. And a ring-shaped decorative member 23 fitted around the clip main body 21. In this embodiment, since the clip main body 21 is connected to the crown 5, the crown 5 corresponds to the attachment object of the present invention. The clip body 21 and the connecting portion 22 are formed from the above-described resin material by, for example, integral molding. The decorative member 23 is molded from the resin material described above.

  FIG. 5 is a perspective view schematically showing the structure of the clip 6 according to the embodiment of the present invention. In FIG. 5, the decorative member 23 is removed from the clip body 21. As is clear from FIG. 5, a cutout 24 is formed in the clip body 21 at the attachment side end of the clip body 21. The notch 24 extends from the attachment side end of the clip body 21 toward the tip end, and bisects the thickness of the clip body 21. By forming the cutout 24, an upper thin portion 21a and a lower thin portion 21b are formed at the upper and lower sides of the cutout 24 at the attachment side end of the clip body 21, respectively. The back surface of the upper thin portion 21a faces the surface of the lower thin portion 21b. The connecting portion 22 is formed on the back surface of the lower thin portion 21b.

  The upper thin part 21a and the lower thin part 21b are formed from thin plates facing each other. The inner end of the notch 24 is disposed closer to the distal end side of the clip body 21 than the connecting portion 22. In other words, the connecting portion 22 is integrally formed on the back surface of the lower thin portion 21 b on the attachment side of the clip body 21 with respect to the inner end of the notch 24. Here, the thickness of the connecting portion 22 decreases as it goes toward the tip end portion of the clip body 21. The connecting portion 22 is integrally formed on the outer peripheral surface of the crown-shaped outer cylinder portion 14 of the crown 5. As is clear from FIG. 3, the clip main body 21 extends along the outer peripheral surface of the cylindrical body 11 from the attachment side end connected to the connection portion 22 to the tip. A ball portion 25 protruding from the back surface of the clip body 21 is formed on the back surface of the clip body 21 at the front end side end. The clip main body 21 is received on the outer peripheral surface of the cylindrical body 11 by the ball portion 25.

  FIG. 6 is a cross-sectional view taken along line 6-6 of FIG. Referring also to FIG. 6, a locking groove 31 is formed at the end of the clip body 21 on the front end side. The decorative member 23 engages with the locking groove 31 at the distal end side end portion of the clip main body 21, and is locked with the notch 24 at the base side end portion of the clip main body 21. Thus, the decorative member 23 is fitted around the clip main body 21. When the decorative member 23 is fitted to the clip main body 21, the contour of the outer edge of the decorative member 23 substantially matches the contour of the outer edge of the clip main body 21. The contour of the inner edge of the decorative member 23 is set slightly smaller than the contour of the inner edge of the clip main body 21.

  FIG. 7 is a partially enlarged sectional view of the clip 6 according to one embodiment of the present invention. Referring also to FIG. 7, in the notch 24, a first engagement body, that is, a first engagement claw 32 is formed on the back surface of the upper thin portion 21a. The first engaging claw 32 is disposed at the center in the width direction of the upper thin portion 21a. The first engaging claws 32 stand upright from the back surface of the upper thin portion 21a, for example, a rectangular parallelepiped claw body 32a, and extend from the tip of the claw main body 32a toward the tip of the upper thin portion 21a along the back surface of the upper thin portion 21a. For example, a thin plate tip piece 32b. Thus, by arranging a part of the decorative member 23 between the tip piece 32b and the back surface of the upper thin portion 21a, the decorative member 23 is locked to the tip of the upper thin portion 21a.

  8 is a perspective view schematically showing the structure of the decorative member 23, and FIG. 9 is a cross-sectional view taken along line 9-9 of FIG. Referring to FIGS. 8 and 9 together, a first engaged body that receives the first engagement claw 32, that is, an engagement groove 33 is formed at one end of the decorative member 23. The engaging groove 33 extends from the inner edge toward the outer edge at one end of the decorative member 23. The bottom surface of the engagement groove 33 defined on the surface side of the decorative member 23 receives the top surface of the tip piece 32b. Thus, the first engagement claw 32 and the engagement groove 33 are engaged. The relative displacement of the upper thin portion 21 a with respect to the decorative member 23 is restricted by the engagement between the first engagement claw 32 and the engagement groove 33.

  At the inner edge of one end of the decorative member 23, a pair of second engaging bodies or protrusions projecting in parallel from the inner edge of the decorative member 23 toward the other end of the decorative member 23 on both sides of the engagement groove 33. Portions 34 and 34 are formed. Each protrusion 34 includes a thick portion 34a that protrudes in parallel from the inner edge of the decorative member 23, and a thin portion 34b that protrudes in parallel from the tip of the thick portion 34a. The thickness of the thin part 34b is set smaller than the thickness of the thick part 34a. The thick part 34a and the thin part 34b spread along the back surface of the decorative member 23, for example. As will be described later, when the decorative member 23 is attached to the clip body 21, a guide path for guiding the first engaging claw 32 toward the inside of the engaging groove 33 is established between the thick portions 34a and 34a. The

  As is apparent from FIG. 7, a second engaged body, that is, a second engaging claw 35 is formed on the surface of the lower thin portion 21b. The second engagement claw 35 is disposed closer to the end of the clip body 21 than the first engagement claw 32 formed in the upper thin portion 21a. FIG. 10 is an end view taken along line 10-10 in FIG. As shown in FIG. 10, the second engaging claw 35 includes, for example, a rectangular parallelepiped claw body 35a standing upright from the surface of the lower thin part 21b, and the lower thin part opposite to each other from the tip of the claw body 35a. For example, a pair of thin tip pieces 35b and 35b extending along the surface of 21b is provided. The tip pieces 35b, 35b spread in a direction orthogonal to the direction in which the protruding portion 34 extends. That is, the tip pieces 35 b and 35 b extend in the width direction of the clip body 21. The tip pieces 35b and 35b extend in parallel to the surface of the lower thin portion 21b, for example.

  As is apparent from FIG. 10, in the state where the decorative member 23 is attached, the thin portion 34b of the protruding portion 34 is disposed between the tip pieces 35b, 35b and the surface of the lower thin portion 21b. As a result, the second engaging claw 35 and the protruding portion 34 are engaged. The relative displacement of the decorative member 23 relative to the lower thin-walled portion 21b is restricted by the engagement between the upper surface of the thin-walled portion 34b and the lower surface of the tip piece 35b. On the other hand, as is apparent from FIG. 7, the side surface of the tip piece 35b orthogonal to the extending direction of the protrusion 34 receives the tip surface of the thick portion 34a where the thin portion 34b is formed. As a result, the displacement of the decorative member 23 from the attachment side end of the clip body 21 toward the tip is restricted. Thus, one end of the decorative member 23 is engaged with the upper thin portion 21 a and the clip body 21 by the engagement of the engaging groove 32 and the protruding portion 34 with the first engaging claw 32 and the second engaging claw 35.

  Next, a method for attaching the decorative member 23 to the cap body 21 will be described. First, as shown in FIG. 11, the protrusion 34 of the decorative member 23 is received on the surface of the lower thin portion 21b outside the outline of the tip of the upper thin portion 21a. The inner edge of one end of the decorative member 23 is disposed outside the outline of the upper thin portion 21a. At this time, the other end of the decorative member 23 is disposed upward from the end portion on the front end side of the clip main body 21. In this state, for example, when the other end of the decorative member 23 is pulled toward the distal end side of the clip body 21, the protruding portion 34 enters the notch 24 and protrudes between the upper thin portion 21a and the lower thin portion 21b. The part 34 is inserted. A first engagement claw 32 is disposed between the protrusions 34 and 34. As a result, the first engagement claw 32 guides the movement of the decoration member 23 according to the movement of the decoration member 23.

  Thereafter, the tip piece 32b of the first engagement claw 32 enters the engagement groove 33 of the decorative member 23, and at the same time, the thin-walled portion 34b of the projecting portion 34 Enter between 21b. The side surface of the thick portion 34a of the protruding portion 34 is received by the side surface of the tip piece 35b. Thus, one end of the decorative member 23 engages with the upper thin portion 21a and the lower thin portion 21b on the proximal end side of the clip body 21. Thereafter, the other end of the decorative member 23 is engaged with the engaging groove 31 on the distal end side of the clip main body 21 by elastic deformation of the decorative member 23. In this way, the decorative member 23 is attached to the writing instrument 1. The decorative member 23 is prevented from coming off based on the locking with the clip body 21.

  According to the writing instrument 1 as described above, the notch 24 is formed in the clip main body 21 on the back side of the connecting portion 22 connected to the crown 5. As a result, compared to the case where the cutout 24 is not formed in the clip body 21, the clip body 21, that is, the lower thin portion 21 b is formed extremely thin in the region where the connecting portion 22 is formed. As a result, the rigidity at the attachment side end of the clip 6 is significantly reduced. Therefore, when the clip 6 is lifted and opened, the clip 6 can avoid excessive stress concentration at the connecting portion 22. In this way, the clip 6 can be prevented from breaking. In addition, even when the clip 6 is lifted and opened by the engagement between the first engagement claw 32 and the engagement groove 33 and the engagement between the second engagement claw 35 and the protruding portion 34, Lifting of the decorative member 23 and the upper thin portion 21a from the surface of the side thin portion 21b is prevented.

  The present invention can be applied to a writing instrument 1 that does not have the cap 2 in place of the writing instrument 1 as described above. In this case, the rear shaft 9 has the same structure as that of the clip 6 described above. For example, the connecting portion 22 is formed integrally with the rear shaft 9. That is, the clip body 21 is connected to the outer peripheral surface of the rear shaft 9 via the connecting portion 22. In this embodiment, since the clip body 21 is connected to the rear shaft 89, the rear shaft 9 corresponds to the attachment object of the present invention. In addition, it goes without saying that the writing instrument 1 according to the present invention includes other writing instruments such as a gel ink ballpoint pen, an oil-based ballpoint pen, and a sign pen instead of the water-based ballpoint pen described above.

  The decorative member 23 may function as an erasing tool for erasing the handwriting by the writing instrument 1. Since the decorative member 23 is fitted around the clip main body 21, the handwriting can be erased without considering the posture of the clip 6 at the time of erasure. In particular, by using the outline of the outer edge of the decorative member 23, a smaller area can be erased. As an example of using the decorative member 23 as an eraser, the writing instrument 1 may be a mechanical pencil, and the decorative member 23 may be formed of a general eraser material. Further, the writing instrument 1 may be made of a thermochromic ink that can be discolored and decolored by frictional heat, and the decorative member 23 may be a friction body for handwriting rubbing. When the decorative member 23 is a friction body, for example, the decorative member 23 is formed from rubber having elasticity such as fluorine rubber, nitrile rubber, silicone rubber, olefin elastomer, polyester elastomer, styrene elastomer, or an elastomer material. Even if the clip main body 21 is folded at the center, it is possible to hold the clip main body 21 broken by the elastic action of the decorative member 23.

1 Writing instrument 5 Attachment object (crown)
6 Writing instrument clip 9 Attachment object (rear axle)
21 clip body 21a upper thin part 21b lower thin part 22 connecting part 23 decorative member 24 notch 32 first engagement body (first engagement claw)
33 First engaged body (engagement groove)
34 Second engagement body (protrusion)
35 Second Engagement Body (Second Engagement Claw)

Claims (4)

A plate-like clip body having a thickness;
A clip for a writing instrument comprising: a connecting portion that is formed at an attachment-side end portion of the clip body and connects the clip body to an attachment object;
The clip body attachment side end is provided with a notch that extends toward the tip end of the clip body and bisects the thickness of the clip body, and is provided above and below the notch. Each of the upper thin portion and the lower thin portion of the clip body is formed,
The clip for a writing instrument, wherein the notch extends to a tip side of the clip body from the connecting portion, and the connecting portion is formed in the lower thin portion. An annular decorative member fitted around the clip body;
A first engagement body formed in the upper thin part;
A first engaged body formed on the decorative member and engaged with the first engaging body;
The clip for a writing instrument according to claim 1, wherein the decorative member is locked to the upper thin-walled portion by the engagement between the first engaging body and the first engaged body. An annular decorative member fitted around the clip body;
A second engagement body formed on the decorative member;
A second engaged body that is formed in the lower thin-walled portion and engages with the second engaging body,
The clip for a writing instrument according to claim 1, wherein the decorative member is locked to the lower thin-walled portion by the engagement of the second engaging body and the second engaged body.   A writing instrument comprising the clip for a writing instrument according to any one of claims 1 to 3.

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