JP2012210765A - Marker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a marker capable of arranging a retractable core to be drawn to the inner wall surface of a shaft tube.SOLUTION: The core 2 applied to the marker 1 that has a core retraction mechanism includes: a tip body 21 that can expose the tip side from a tip opening 4a of a shaft tube 4; an ink storage 22 to supply the ink for marker to the tip body 21; and a relay 23 that extends between the tip body 21 and the ink storage 22. This relay part 23 is smaller than the diameter of the ink storage 22 and has flexibility. Accordingly, it will not be necessary to make the entire core sag by adopting of the relay part 23. The tip body part 21 is enabled to be shaken right and left, and the deflection restoring force that returns the deflection is possessed though the relay part 23 soon will be a state in the steady state. This relay part 23 can be easily sagged even if using the same material as the ink storage 22 by reducing it more than the diameter of the ink storage 22.

Description

  The present invention relates to a marker such as an oily marker, a board marker, a water-based marker, a fluorescent marker, etc. that enables the core to appear and disappear.

  Conventionally, there is JP, 2007-203682, A as a technique of such a field. The marker described in this publication is a fluorescent pen, and the core is allowed to appear and disappear 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 marker, when the center core is advanced by the knock mechanism, the air tight sleeve also advances 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 marker, the air tightness of the core is made possible without using a cap.

JP 2007-203682 A

  The marker described above has a single core in the shaft cylinder. However, it is possible to realize a marker in which a plurality of cores are arranged in the shaft cylinder, a marker in which a core and an air tight rod (see, for example, Japanese Utility Model Publication No. 2-46686) are arranged in the shaft cylinder, and the like. Therefore, a shaft cylinder having a small diameter is required.

  An object of this invention is to provide the marker which can be arrange | positioned so that the core which can be protruded and retracted approaches the inner wall face of a shaft cylinder.

The present invention provides a core having a chip body that can be exposed on the tip side from the tip opening of the shaft tube, and an ink reservoir for supplying marker ink to the chip body,
In a marker provided with a centering and retracting mechanism for enabling the projecting and retracting of the tip of the core from the opening of the shaft tube,
The core has a relay portion that extends between the chip main body portion and the ink storage portion, and the relay portion is smaller than the diameter of the ink storage portion and has flexibility.

  In this marker, the core has an ink storage part for enabling storage of marker ink, and a chip body part for enabling writing on a paper surface, and the like, between the chip body part and the ink storage part. The flexible relay part extends. By making the relay part smaller than the diameter of the ink storage part, the relay part can be easily bent even if the same material as that of the ink storage part is used. The use of such a core leads to the centering of the core in order to realize a marker with a plurality of cores in the shaft cylinder, a marker with a core and an air tight rod in the shaft cylinder, etc. Since it can be as close as possible to the inner wall surface of the cylinder, the diameter of the shaft cylinder can be reduced. By adopting a flexible relay unit, it is not necessary to bend the ink storage unit, and the ink storage unit can be enlarged.

In addition, when the tip of the tip body portion protrudes from the tip opening of the shaft tube, further comprising guide means for moving the tip of the tip body portion in the axial direction without contact with the inner wall surface of the shaft tube,
The guide means is formed in the guide body portion having a chip passage having a concave cross section that extends in the axial direction on the front end side of the inner wall surface of the shaft cylinder and allows insertion of the chip body, and the guide portion. It is preferable that the guide surface extending in the axial direction at the upper edge has a sliding portion that comes into contact with the bending restoring force of the relay portion.
Such a guide means has a predetermined height from the inner wall surface of the shaft tube to the guide surface at the upper edge of the guide portion, so that the tip of the chip body portion is located with respect to the inner wall surface of the shaft tube. It can be reliably moved in the axial direction in a non-contact state.

In addition, an air tight rod that can be moved in the axial direction by a centering and retracting mechanism is further provided in the shaft tube, and an inner plug portion that opens and closes the opening of the shaft tube from the inside is provided at the tip of the shaft portion of the air tight rod In the shaft tube, a central ink storage part and a partition part through which the air tight rod penetrates are formed, and the partition part has a seal part that closely contacts the outer surface of the ink storage part and the outer surface of the air tight bar It is preferable to be provided.
Capless can be realized by adopting air tight rod. Furthermore, the cooperation between the air tight rod and the partition wall can surely seal the chip storage space from the tip end side of the shaft tube to the partition wall, so that the marker ink that easily evaporates from the chip body. Evaporation can be surely prevented.

  According to the present invention, the retractable core can be arranged so as to approach the inner wall surface of the shaft tube.

It is a disassembled perspective view which shows one Embodiment of the marker which concerns on this invention. It is a longitudinal cross-sectional view of the marker shown in FIG. It is sectional drawing which follows the III-III line of FIG. It is sectional drawing which shows the state which closed the front-end | tip opening of the axial cylinder with the air tight stick. It is sectional drawing which shows the state which the chip | tip part protruded from the front-end | tip opening of the axial cylinder.

  Hereinafter, preferred embodiments of the marker 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 FIG. 1 and FIG. 2, the multi-core marker 1 is a rotary multi-color fluorescent marker, and has a plurality of (for example, three) cores 2 and an air tight rod 3. Each core 2 has the same structure except that it is filled with inks of different colors.

  The marker 1 has a resin shaft cylinder 4 composed of a cylindrical front shaft 4A and a rear shaft 4B, and a rotatable operation section 6 is mounted on the rear end of the rear shaft 4B. By rotating the operation unit 6, the tip opening 4 a can be closed by the air tight rod 3 and the three cores 2 can be selectively projected and retracted via the centering mechanism P.

  The centering and extending mechanism P that forms the cam mechanism is formed on the outer surface of the angle cam portion 7 protruding into the shaft cylinder 4 from the open end of the bottomed cylindrical operation portion 6 and the slide piece 8 movable in the direction of the axis L. In addition, it is constituted by a driven portion 9 that is locked to a locking recess 7 a formed at the top of the angle cam portion 7. Each slide piece 8 is arranged with a phase angle of 90 degrees in the circumferential direction, and the three cores 2 and the rear ends of the air tight rods 3 are inserted and fixed to the tip of each slide piece 8, respectively. Any of the air tight rods 3 can be operated by the center protrusion / retraction mechanism P.

  The outer periphery of the core 2 and the air tight rod 3 is surrounded between the tip of each slide piece 8 and the disk-shaped partition wall 10 formed integrally with the rear shaft 4B at the approximate center of the shaft cylinder 4. In this way, the compression coil springs 11 are arranged. The slide pieces 8 are urged rearward by the respective compression coil springs 11, so that the top portions 9 a of the driven portions 9 formed on the slide pieces 8 are reliably slid along the mountain-shaped cam surfaces 7 b of the angle-shaped cam portions 7. Can be moved.

  In the center projecting mechanism P configured in this way, the operation unit 6 is rotated in an arbitrary direction, and the chevron cam unit 7 is rotated in an arbitrary direction along with the operation unit 6, so that an arbitrary follower is provided. The part 9 can be moved in the direction of the axis L. Thereby, the arbitrary slide piece 8 can be advanced and retracted in the direction of the axis L. Therefore, the tip ends of the three cores 2 can be selectively projected and retracted from the tip opening 4 a of the shaft cylinder 4, and the tip opening 4 a can be opened and closed by the single air tight rod 3. And when the top part 9a of the driven part 9 enters in the latching recessed part 7a formed in the top part of the angle-shaped cam part 7, the retreat of the slide piece 8 is controlled, thereby maintaining the writing state of the core 2. The closed state of the tip opening 4a by the air tight rod 3 can be maintained.

  The resin-made air tight rod 3 fixed to the slide piece 8 has flexibility and includes a main body 3A and a connecting rod 13 extending from the rear end of the main body 3A. The main body portion 3A includes a rod-like portion 3a extending in a straight shape and a substantially spherical inner plug portion 3b formed at the tip of the rod-like portion 3a. In such an air tight rod 3, the connecting rod 13 is fixed to the slide piece 8, the rear end of the connecting rod 13 is fitted into the front end of the slide piece 8, and the rear end of the main body 3 </ b> A is located at the front end of the connecting rod 13. The end is inserted.

  A compression coil spring 14 is disposed in the insertion hole 13a formed at the front end of the connecting rod 13, and the compression coil spring 14 biases the main body portion 3A of the air tight rod 3 forward. The connecting rod 13 is formed with a locking port 13b that communicates with the insertion hole 13a. The locking port 13b is fitted with a protrusion 3c formed on the rod-shaped portion 3a of the main body 3A. The main body 3A is prevented from coming off from the connecting rod 13.

  As shown in FIG. 4, when the slide piece 8 is advanced in the direction of the axis L by the turning operation of the operation portion 6, the air tight rod 3 moves toward the tip opening 4a and finally by the inner plug portion 3b. The tip opening 4a of the air tight rod 3 is closed from the inside. At this time, the tip opening 4a is firmly closed by the inner plug portion 3b by the urging force of the compression coil spring 14.

  As shown in FIGS. 1 and 2, the core 2 fixed to the slide piece 8 includes a tip body portion 21 that can be exposed from the tip opening 4 a of the shaft tube 4 and a marker on the tip body portion 21. An ink storage part 22 for supplying the ink for use, and a relay part 23 extending between the chip main body part 21 and the ink storage part 22.

  The chip body 21 is composed of a chip part 21a and a resin (eg, polypropylene, polyethylene) covering part 21b that protects the chip part 21a, and the tip of the chip part 21a is exposed from the covering part 21b. . The ink storage unit 22 includes a cylindrical container 22a made of resin (for example, polypropylene) and a filling 22b that is packed in the container 22a to absorb ink. The relay portion 23 includes a chip extension portion 23a that extends from the rear end of the chip portion 21a and a resin (for example, polyester) covering portion 23b that protects the chip extension portion 23a. The covering portion 23b extends forward from the container 22a and is integrally formed with the container 22a.

  One end of the tip extension portion 23a is inserted into the tip portion 21a, and the other end of the tip extension portion 23a is inserted into the batting 22b. Accordingly, the ink soaked into the batting 22b can be supplied to the tip portion 21a through the tip extension portion 23a.

  Furthermore, the relay part 23 is smaller than the diameter of the ink storage part 22 and has flexibility. Therefore, the use of the relay portion 23 eliminates the need to bend the entire core. The relay portion 23 is straight in a steady state, but has a bending restoring force that allows the chip body portion 21 to swing left and right and restores the bending. By making the relay portion 23 smaller than the diameter of the ink storage portion 22, the relay portion 23 can be easily bent even if the same material as the ink storage portion 22 is used.

  The adoption of such a core 2 is to realize a marker in which a plurality of cores 2 are arranged in the shaft cylinder 4, a marker in which the core 2 and the air tight rod 3 are arranged in the shaft cylinder 4, and the like. Thus, the center core 2 can be brought as close as possible to the inner wall surface 4b of the shaft cylinder 4, so that the diameter of the shaft cylinder 4 can be reduced. By adopting the relay portion 23 having flexibility, there is no need to bend the ink storage portion 22, and the ink storage portion 22 can be enlarged.

  In the above-described core 2, the tip end of the exposed tip portion 21 a is pivoted when the core 2 moves along the axis L direction because it is moved toward the inner wall surface 4 b of the shaft cylinder 4. There is a risk of touching the inner wall surface 4b of the cylinder 4 to contaminate the inner wall surface 4b of the shaft cylinder 4 or damage the tip of the tip portion 21a. Therefore, when the tip of the tip body 21 is projected and retracted from the tip opening 4 a of the shaft cylinder 4, the marker 1 does not contact the tip of the tip body 21 with the inner wall surface 4 b of the shaft cylinder 4 in the axis L direction. The guide means G for moving is provided.

  As shown in FIGS. 1 to 3, the guide means G has a U-shaped cross section that extends in the direction of the axis L on the front end side of the inner wall surface 4 b of the shaft cylinder 4 and allows the chip body 21 to be inserted. The guide portion 31 having the tip passage S and the guide surface F formed in the tip body portion 21 and extending in the axis L direction at the upper edge of the guide portion 31 are brought into contact with each other by the bending restoring force of the relay portion 23. And a sliding portion 32.

  The guide portion 31 is formed as a pair of left and right guide pieces 31a and 31b protruding in the radial direction from the inner wall surface 4b of the shaft cylinder 4, and the pair of guide pieces 31a and 31b extends in the axis L direction. The guide surface F that forms the upper edge of each guide piece 31a, 31b extends in the direction of the axis L in a predetermined shape with such a height that the tip of the chip body 21 does not contact the inner wall surface 4b of the shaft cylinder 4. Yes.

  The chip body 21 is formed with a sliding portion 32 that contacts the guide surface F. The sliding portion 32 is a projecting piece extending in a direction orthogonal to the axis L, and the chip body portion. 21 is formed separately from the covering portion 21b. As shown in FIG. 3, the sliding portion 32 protrudes outward larger than the diameter of the covering portion 21 b, and both end portions of the sliding portion 32 are bent and restored by the relay portion 23 with respect to the guide surface F. Can continue to abut.

  Therefore, as shown in FIG. 5, when the center core 2 moves in the direction of the axis L, both ends of the sliding portion 32 are always pressed against the guide surface F. A reliable guide can be achieved. Moreover, since the tip wall S has a predetermined height from the inner wall surface 4 b to the guide surface F in the tip passage S of the shaft cylinder 4, the tip of the tip body portion 21 is located with respect to the inner wall surface 4 b of the shaft cylinder 4. In a non-contact state, it can be reliably moved in the direction of the axis L.

  In addition, a partition wall 10 through which the ink storage part 22 of the core 2 and the air tight rod 3 penetrate is formed inside the shaft cylinder 4, and an insertion hole into which each ink storage part 22 is inserted in the partition part 10. 10a and an insertion hole 10b into which the connecting rod 13 of the air tight rod 3 is inserted are formed. Ring-shaped seal portions C1 and C2 that are in close contact with the outer surface of the ink storage portion 22 of the core 2 and the outer surface of the air tight rod 3 are fixed to the opening edges that form the insertion holes 10a and 10b, respectively. .

  By adopting the air tight rod 3, caplessness can be realized. Further, the cooperation of the air tight rod 3 and the partition wall portion 10 can reliably seal the chip accommodating space A from the tip end side of the shaft tube 4 to the partition wall portion 10. By providing the partition wall 10, the chip accommodating space A in the shaft cylinder 4 can be narrowed, and the marker ink that easily evaporates is less likely to evaporate from the chip body 21.

  As a device for improving the airtightness in the shaft cylinder 4, the rear open end of the front shaft 4A is abutted against the partition wall 10 of the rear shaft 4B. At this time, the rear open end and the rear end of the front shaft 4A are used. An O-ring R1 is interposed between the partition wall 10 of the shaft 4B to achieve a seal between the front shaft 4A and the rear shaft 4B. Further, the outer peripheral wall of the bottomed cylindrical operation part 6 is abutted against the rear open end of the rear shaft 4B. At this time, the outer peripheral wall of the operation part 6 and the rear open end of the rear shaft 4B An O-ring R2 is inserted between the rear shaft 4B and the operation unit 6 to provide a seal. By adopting the O-rings R1 and R2, the airtightness in the shaft tube 4 can be further enhanced by cooperation with the seal portions C1 and C2 described above.

  It goes without saying that the present invention is not limited to the embodiment described above. For example, the marker according to the present invention can be applied to oil-based markers, board markers, water-based markers and the like having ink that is easily dried. In the case of a marker without the air tight rod 3, a cap may be used. The present invention can also be applied to a knock type marker.

  DESCRIPTION OF SYMBOLS 1 ... Marker, 2 ... Medium core, 3 ... Air tight stick, 3b ... Inner plug part, 4 ... Shaft cylinder, 4a ... Tip opening, 4b ... Inner wall surface, 10 ... Partition part, 21 ... Chip body part, 22 ... Ink Storage part, 23 ... Relay part, 31 ... Guide part, 32 ... Sliding part, L ... Axis, P ... Centering mechanism, G ... Guide means, S ... Tip passage, F ... Guide surface, C1, C2 ... Seal Department.

Claims (3)

A core having a tip body capable of exposing the tip from the tip opening of the shaft tube, and an ink reservoir for supplying marker ink to the tip body;
In a marker comprising a center protrusion / retraction mechanism for enabling the protrusion / disengagement of the front end of the center core from the front end opening of the shaft cylinder,
The core has a relay part extending between the chip body and the ink storage part, and the relay part is smaller than the diameter of the ink storage part and has flexibility. And a marker. A guide means for moving the tip of the tip body in the axial direction in a non-contact manner with the inner wall surface of the shaft when the tip of the tip body protrudes from the tip opening of the shaft;
The guide means includes
A guide portion having a chip passage having a concave cross section that extends in the axial direction on the front end side of the inner wall surface of the shaft cylinder and allows insertion of the chip body;
And a sliding portion that is formed on the chip main body portion and extends in the axial direction at the upper edge of the guide portion, and comes into contact with a bending restoring force of the relay portion. The marker according to claim 1. An air tight rod that can be moved in the axial direction by the centering and retracting mechanism is further provided in the shaft tube,
An inner plug for opening and closing the tip opening of the shaft cylinder from the inside is provided at the tip of the shaft portion of the air tight rod. Inside the shaft cylinder, the ink storage section and the air in the core are provided. 3. A partition part through which a tight rod passes is formed, and the partition part is provided with a seal part that is in close contact with the outer surface of the ink storage part and the outer surface of the air tight bar. The described marker.

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