JP5777428B2 - Writing instrument with cap - Google Patents

Description

  The present invention relates to a writing instrument that prevents loss of a cap.

  Conventionally, there is JP, 2007-203682, A as a technique of such a field. The writing instrument described in this gazette is a fluorescent pen, and the center of the writing instrument can be moved by a knock mechanism. An air tight sleeve that is movable in the axial direction is attached to the tip of the central core, and a lid that can be opened and closed via a hinge is provided at the front end of the air tight sleeve. The lid is provided with a triangular locking portion, and this locking portion can be inserted into the window portion of the shaft tube by hitting a stopper formed on the shaft tube. In such a writing instrument, when the center core is advanced by the knock mechanism, the air tight sleeve also moves forward together with the center core, and the locking portion of the lid provided on the air tight sleeve hits the stopper. The locking part enters the window part. At this time, the movement of the air tight sleeve is stopped, but since the advancement of the core continues, the tip of the core protrudes from the tip of the shaft cylinder while the lid is opened. In such a writing instrument, the air tightness of the core is made possible without using a cap.

JP 2007-203682 A

  Although the writing instrument described above is configured to prevent the cap from being lost, there is a problem in that it requires a knock mechanism for projecting the core and complicates the structure of the writing instrument itself.

  An object of this invention is to provide the writing instrument which enabled the simplification of the structure in order to prevent loss of a cap.

The present invention, in a writing instrument having a core,
An elongated body that holds the core;
An arm portion having one end pivotally supported by the front end portion of the main body portion and the other end pivotally supported by the front end portion of the core;
The front end portion of the main body portion and the one end of the arm portion are rotatably connected by the first shaft portion,
A first elongated hole is formed in the other end of the arm portion along the extending direction of the arm portion, and a second core that is inserted into the first elongated hole and is pivotally supported by the center core. Is formed,
On the arm part or the main body part, a cap part having a center core fitting port into which a front end part of the center core moving forward along the main body part is inserted is fixed.
The arm portion that rotates around the first shaft portion is biased in a direction away from the main body portion by the elastic body ,
A third shaft portion is provided at the rear end of the center core, and a second long hole is provided in the main body portion along the extending direction of the main body portion .

  In this writing instrument with a cap, when the core is made to be in a writing state, the second shaft moves along the first slot when the core is retreated with a finger so as to remove the core from the cap. . When the tip of the center core is removed from the cap portion and the finger is released from the center core, the arm portion can be automatically rotated around the first shaft portion by the elastic force. Therefore, when the core is in the writing state, one-handed operation of the writing instrument becomes extremely easy. In this writing instrument, since the cap portion is fixed to the arm portion or the main body portion, it is possible to prevent the cap portion from being lost while simplifying the structure.

In addition, a third shaft portion is provided at the rear end of the center core, and the second long hole is provided in the main body portion along the extending direction of the main body portion. The core can be smoothly retracted and advanced along the main body without removing from the main body. Then, the center core is detached from the cap portion, and the arm portion rotates around the first shaft portion.

In addition, the outer periphery of the second shaft portion has a substantially rectangular cross section having a parallel and facing sliding surface, and a front surface and a rear surface positioned in front of and behind the center core, and the first elongated hole has the second shaft A guide hole extending in the longitudinal direction with substantially the same width as the thickness of the part, and a rotation hole formed at the rear end of the guide hole with a diameter substantially the same length as the diagonal line in the cross-sectional shape of the second shaft part, It is preferable to consist of:
When such a configuration is adopted, the rotation of the arm portion is restricted while the second shaft portion moves along the guide hole, and the second shaft portion enters the rotation hole, so that the arm The rotation restriction of the part can be released. Therefore, the arm portion can be rotated in a state where the tip of the center core is completely detached from the cap portion, and it is avoided that the tip of the center core hits the cap portion, and the tip of the core core is damaged by the cap portion during operation. Can be prevented.

Further, the front end side of the guide hole protrudes into the guide hole from the edge of the guide hole, and the second shaft portion comes into contact with the rear surface of the second shaft portion with the end of the center core fitted in the cap portion. It is preferable that a locking projection for locking the portion is formed.
If such a structure is employ | adopted, the state which fitted the front-end | tip of the center core to the cap part can be maintained reliably. In addition, it is possible to provide a click feeling when the tip of the core is completely fitted into the cap portion.

  According to the present invention, the structure is simplified in order to prevent the cap from being lost.

1st Embodiment of the writing instrument with a cap which concerns on this invention is shown, (a) is a side view, (b) is a perspective view. The state which retracted the center core is shown, (a) is a side view, (b) is a perspective view. A writing state is shown, (a) is a side view, (b) is a perspective view. It is the perspective view which looked at the writing instrument of the writing state from the front. It is a side view which shows a 1st long hole and a 2nd axial part. It is a disassembled perspective view of a multi-core writing instrument. It is a perspective view which shows the assembly process of a multi-core writing instrument. It is a perspective view which shows the after assembly of a multi-core writing instrument. It is a perspective view which shows 2nd Embodiment of the writing instrument with a cap which concerns on this invention. It is a perspective view which shows 3rd Embodiment of the writing instrument with a cap which concerns on this invention. It is a disassembled perspective view of the writing instrument with a cap shown by FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a writing instrument with a cap according to the present invention will be described in detail with reference to the drawings. In the following description, the pen tip side is referred to as “front side”.

  As shown in FIGS. 1 to 3, the writing instrument 1 with a cap has a center 2 of the fluorescent marker, and the center 2 can be stored in the main body 3. The main body 3 has left and right side walls 3a and a bottom wall 3b which are long and have a substantially U-shaped cross section. A pair of left and right bearing pieces 4 are erected at the front end of the bottom wall 3 b of the main body 3, and the first shaft portion 6 is fixed so as to span the bearing pieces 4. The first shaft portion 6 is pivotally supported at the base end of the arm portion 7, and the arm portion 7 is provided with a pair of left and right arm pieces 7 a extending in parallel with each other. . In the retracted state of the core 2, the bearing piece 4, the arm piece 7 a, and the side wall 3 a are aligned in a straight line in the axis L direction.

  Each arm piece 7a is formed with a first long hole 8 along the extending direction of the arm piece 7a, and is inserted into the first long hole 8 on the front end side of the core body 2a of the core 2. A second shaft portion 9 is formed. Between the left and right arm pieces 7a, a cap portion 10 located on the proximal end side of the arm portion 7 is provided, and the cap portion 10 is provided with a core fitting opening 10a that is opened rearward. (See FIG. 4). The chip portion 2b of the core 2 is sealed by the center core fitting port 10a.

  The arm portion 7 is biased in a direction away from the bottom wall 3 b of the main body portion 3 by a torsion coil spring 11 that is an example of an elastic body. The winding portion 11 a of the torsion coil spring 11 is wound around the first shaft portion 6, and one end 11 b of the torsion coil spring 11 is a pull formed on the proximal end side of the arm portion 7 between the left and right bearing pieces 4. The other end 11 c of the torsion coil spring 11 is locked to the hanging portion 7 b and is locked to the bottom wall 3 b of the main body portion 3. Further, the core body 2a of the core 2 is provided with an operation portion 12 extending in the longitudinal direction, and before and after the operation portion 12, a finger can be hooked when the core 2 moves forward or backward. Angle-shaped protrusions 12a and 12b are formed.

  As shown in FIG. 5, the second shaft portion 9 has a substantially rectangular cross section having sliding surfaces 9 a and 9 b facing each other in parallel, and a front surface 9 c and a rear surface 9 d positioned in front of and behind the core 2. . The first long hole 8 has a guide hole 8a extending in the longitudinal direction with a width W substantially the same as the thickness P of the second shaft portion 9, and a length substantially the same as the diagonal R in the cross-sectional shape of the second shaft portion 9. And a rotation hole 8b formed at the rear end of the guide hole 8a with a diameter D. Further, the front surface 9c and the rear surface 9d of the second shaft portion 9 are formed in an arc shape so that the second shaft portion 9 can easily rotate along the edge of the rotation hole 8b, and the front surface 9c and the rear surface 9d. And the radius of curvature of the rotation hole 8b are substantially the same.

  When such a configuration is adopted, while the sliding surfaces 9a and 9b of the second shaft portion 9 are moving along the edge of the guide hole 8a, the rotation of the arm portion 7 is restricted, and the rotation hole When the second shaft portion 9 enters into 8b, the rotation restriction of the arm portion 7 can be released. Therefore, the arm portion 7 can be rotated in a state in which the tip of the core 2 is completely detached from the cap portion 10, and the tip of the tip portion 2b of the core 2 is avoided from hitting the cap portion 10, and at the time of operation The cap portion 10 can prevent the tip of the tip portion 2b of the core 2 from being damaged.

  Further, a locking projection 14 is formed on the front end side of the guide hole 8a so as to protrude from the edge of the guide hole 8a into the guide hole 8a. 10, the second shaft portion 9 is locked by coming into contact with the rear surface 9 d of the second shaft portion 9. In addition, a pair of upper and lower boundary projections 15 projecting from the edge of the guide hole 8a into the guide hole 8a are formed on the rear end side of the guide hole 8a. The boundary projection 15 makes it difficult for the second shaft portion 9 to move from the rotation hole 8b into the guide hole 8a, and can reliably rotate the second shaft portion 9 within the rotation hole 8b. .

  By employing the locking projection 14, it is possible to prevent the second shaft portion 9 from retreating and reliably maintain the state where the tip of the core 2 is fitted to the cap portion 10. In addition, it is possible to provide a click feeling when the tip of the core 2 is completely fitted into the cap portion 10.

  As shown in FIGS. 1 to 3, the rear end of the core 2 is provided with a third shaft portion 16 protruding from the core main body 2 a, and the left and right side walls 3 a of the main body 3 are extended to the extension. A second long hole 17 is formed along the existing direction.

  When such a configuration is employed, the core 2 can be smoothly moved backward and forward along the main body 3 without the rear end of the core 2 being detached from the main body 3. Then, the core 2 is detached from the cap portion 10, the arm portion 7 is rotated around the first shaft portion 6, and the cap portion 10 hits the core 2 as shown in FIG. 2 is restricted, and the writing state of the core 2 can be maintained at the restricted position.

  In the writing instrument 1 with a cap, since the arm portion 7 is fixed with a cap portion 10 having a core fitting opening 10a into which the tip portion 2b of the core 2 that moves forward along the main body portion 3 is inserted. The cap part 10 can be prevented from being lost while simplifying the structure. As shown in FIG. 2, when the core 2 is in a writing state, when the operation unit 12 of the core 2 is retreated with a finger so as to remove the core 2 from the cap portion 10, the second shaft portion 9 is moved. It moves along the first slot 8. As shown in FIG. 3, after removing the tip of the core 2 from the cap portion 10, the arm portion 7 is moved to the first position by the torsion coil spring 11 by releasing the finger from the operation portion 12 of the core 2. It automatically rotates around the shaft 6.

  Therefore, when the core 2 is in the writing state, the one-handed operation of the writing instrument 1 becomes extremely easy. Further, in order to put the core 2 in the retracted state, the operation unit 12 of the core 2 is once retracted with a finger, and the core 2 is moved along the main body 3 while the core 2 is stored in the main body 3. The operation part 12 is advanced with a finger, and the tip of the core 2 is fitted into the cap part 10. At this time, a click feeling that feels the completion of fitting is obtained immediately after the second shaft portion 9 passes through the locking projection 14.

  Next, the multi-core writing instrument 20 using the writing instrument 1 mentioned above is demonstrated.

  As shown in FIG. 6, the single-core writing instrument 1 used for the multi-core writing instrument 20 has the same structure except that it is filled with inks of different colors. The bottom wall 3b of the main body 3 of each writing instrument 1 has a mating surface A having a substantially V-shaped cross section with an opening angle of 120 degrees.

  Further, the multi-core writing instrument 20 has fastening members 22 and 23 for integrating the single-core writing instruments 1. The fastening member 22 positioned on the front side extends in the axis L direction from the outer periphery of the front end wall 22a and the front end wall 22a, is inserted between the side walls 3a of the adjacent writing instruments 1, and has a substantially V-shaped cross section that contacts the side surface 3a. 3 claw portions 22b having a mating surface B, and the three claw portions 22b are arranged at equal intervals. The front end wall 22a has a notch 22c formed between the claw portions 22b.

  The fastening member 23 positioned on the rear side extends in the axis L direction from the outer periphery of the rear end wall 23a and the rear end wall 23a, and is inserted between the side walls 3a of the adjacent writing instruments 1, and the arm piece 7a and the bearing piece 4 and the three claw portions 23b having the mating surface B having a substantially V-shaped cross section that abuts the four claw portions 23b. The three claw portions 23b are arranged at equal intervals. An insertion portion 25 that protrudes in the direction of the axis L is formed on the rear end wall 3 c of the main body 3 of the writing instrument 1.

  As shown in FIG. 1, the insertion portion 25 is provided with a head portion 25 a, and the insertion portion 25 is formed by insertion pieces 25 </ b> A and 25 </ b> B that are divided into two by the slit S. The insertion pieces 25A and 25B have elasticity in a direction away from each other. On the other hand, an opening 26 into which the insertion portion 25 is inserted is formed in the rear end wall 23a of the fastening member 23 (see FIG. 6).

  In assembling the multi-core writing instrument 20, as shown in FIG. 7, the mating surfaces A of the adjacent bottom walls 3 b are butted together to integrate the single-core writing instrument 1. Thereafter, the claw portions 22b and 23b of the fastening members 22 and 23 are inserted between the side walls 3a of the adjacent writing instruments 1 from the front and rear, and the front end wall is brought into contact with the arm piece 7a, the bearing piece 4 and the side wall 3a. 22 a and the rear end wall 23 a are abutted against the writing instrument 1. Then, the insertion portion 25 of the writing instrument 1 is inserted into the opening portion 26 of the fastening member 23. At this time, the head 25 a is caught by the edge of the opening 26 by the elastic force of the insertion portion 25, and the fastening member 23 is prevented from coming off. In this way, the assembly of the multi-core writing instrument 20 as shown in FIG. 8 is completed.

  It goes without saying that the present invention is not limited to the embodiment described above.

  A writing instrument 30 with a cap according to a modification according to another embodiment will be described with reference to FIG. In addition, about the component equivalent to the writing instrument 1 with a cap shown by FIG. 1, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 9, the writing instrument 30 with a cap has a cap portion 32 integrally formed at the front end of the main body portion 31, and a pair of left and right first shaft portions 32 b are formed in the cap portion 32. Has been. The base end of the arm portion 33 composed of a pair of left and right arm pieces 33a is pivotally supported by each first shaft portion 32b. The cap portion 32 fixed to the main body portion 31 is formed with a center core fitting port 32a into which the tip portion 2b of the center core 2 moving forward along the main body portion 31 is inserted.

  The arm portion 33 is urged by a torsion coil spring 35 in a direction away from the bottom wall 31 b of the main body portion 31. The winding portion 35a of the torsion coil spring 35 is wound around the first shaft portion 32b, and one end 35b of the torsion coil spring 35 is hooked on the proximal end side of the arm piece 33a, and the other end of the torsion coil spring 35 is 35 c is locked to the bottom wall 31 b of the main body 31.

  As shown in FIGS. 10 and 11, the cap portion 42 of the writing instrument 40 with a cap is fixed as a separate body to the front end of the main body portion 41, and the insertion piece 42 b is provided in the cap portion 42 having the center core fitting opening 42 a. The insertion piece 42b is formed and press-fitted into an insertion hole 41a formed at the front end of the bottom wall 41b of the main body 41 and fixed. By making the main body portion 41 and the cap portion 42 separate parts, the cap portion 42 is made of a flexible material, so that the close fitting property between the core 2 and the cap portion 42 is improved. The two chip portions 2b can be reliably sealed. The other configuration is the same as the writing instrument 30 with a cap shown in FIG.

  As another modified example of the cap portions 10, 32, and 40 described above, cylindrical seal members may be loaded into the core fitting ports 10a, 32a, and 42a. As a result, the tip 2b of the core 2 can be reliably sealed. In addition, if a sealing member is employ | adopted, center core fitting port 10a, 32a, 42a will be arrange | positioned at a sealing member.

  The writing instrument according to the present invention can be applied to, for example, oil-based markers, board markers, water-based markers, water-based ballpoint pens, and the like that have ink that is easily dried.

  DESCRIPTION OF SYMBOLS 1,30,40 ... Writing instrument with a cap, 2 ... Center core, 3, 31, 41 ... Main-body part, 6, 32b ... 1st axial part, 7, 33 ... Arm part, 8 ... 1st long hole, 8a ... guide hole, 8b ... rotation hole, 9 ... second shaft portion, 9a, 9b ... sliding surface, 9c ... front surface, 9d ... rear surface, 10a, 32a, 42a ... core fitting port, 10, 32,42 DESCRIPTION OF SYMBOLS ... Cap part, 11, 35 ... Torsion coil spring (elastic body), 14 ... Locking protrusion, 16 ... 3rd axial part, 17 ... 2nd long hole, 20 ... Multi-core writing instrument, L ... Axis line.

Claims (3)

In a writing instrument having a core,
An elongated main body for holding the core;
One end is pivotally supported on the front end of the main body, and the other end is pivotally supported on the front end of the core.
The front end portion of the main body portion and the one end of the arm portion are rotatably connected by a first shaft portion,
A first elongated hole is formed in the other end of the arm portion along the extending direction of the arm portion, and the center core is inserted into the first elongated hole so as to be rotatable. A second shaft portion to be supported is formed;
A cap portion having a core fitting opening into which a tip portion of the core that moves forward along the body portion is inserted is fixed to the arm portion or the body portion,
The arm portion that rotates about the first shaft portion is biased in a direction away from the main body portion by an elastic body ,
A cap characterized in that a third shaft portion is provided at the rear end of the central core, and a second elongated hole is provided in the main body portion along the extending direction of the main body portion. Writing instrument with. The outer periphery of the second shaft portion, without a sliding surface facing parallel, a substantially rectangular cross section having a front and rear surface located on the front and rear of the central core, said first elongated hole, said second A guide hole extending in the longitudinal direction with substantially the same width as the thickness of the shaft portion, and a rotation formed at the rear end of the guide hole with a diameter approximately the same length as the diagonal line in the cross-sectional shape of the second shaft portion The writing instrument with a cap according to claim 1 , comprising a hole. Wherein the guide hole front end of the protruded from the guide hole of the edge portion into the guide hole, in a state of fitting the tip of the wick in the cap portion abutting said rear face of said second shaft portion 3. A writing instrument with a cap according to claim 2 , wherein a locking projection for locking the second shaft portion is formed.

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