JP6227902B2 - Writing instrument - Google Patents

Description

  The present invention relates to a writing instrument. More specifically, the present invention relates to a writing instrument having an openable / closable lid at the rear end of the shaft cylinder.

Conventionally, as a writing instrument comprising a lid that exposes and closes the rear end of the shaft tube at the rear end of the shaft tube, an opening for opening a sliding groove rearward is provided at the rear end of the shaft tube, There has been disclosed a writing instrument having a structure in which a sliding body can be removed and inserted from an opening, and a lid for closing the opening is rotatably mounted on a hinge provided on a shaft cylinder.
Further, in the writing instrument having the above-described configuration, the lid is provided for the purpose of improving the fitting force when the lid is closed (when a part of the lid and a part of the shaft tube are fitted) and to impart a decorative property. A writing instrument with a head crown is disclosed (for example, see Patent Documents 1 and 2).

JP 2007-38635 A JP 2012-911 A

Each of the lids applied to the writing instrument has a handle portion protruding outward from the shaft cylinder at a position (end portion) symmetrical with respect to the hinge portion serving as a fulcrum for rotation. And it has a structure which cancels | releases the cover body in a fitting state and rotates by hooking a nail | claw etc. and pulling up a cover body to an axial direction upper side.
However, in the above structure, since the handle cannot be formed large, when the nail is short or too long, and when a person with weak finger strength operates, the fitting with the shaft cylinder is released. It was difficult to open the lid.

  Even if the present invention is a writing instrument provided with a rotating lid having the above-described structure, it is not necessary to pull the lid upward by hooking a nail or the like, and the lid can be fitted by pressing in the radial direction. A writing instrument that can be easily opened and rotated.

The writing instrument of the present invention is a writing instrument that is provided with a lid that exposes and closes the rear end of the shaft cylinder attached to the rear end of the shaft cylinder, and is provided on the side surface of the rear part of the shaft cylinder. Forming a base projecting from the outer surface of the shaft tube, engaging an engaging portion provided at one end of the lid with a hinge formed on the base, and rotatably engaging the lid. In addition, the rear end of the shaft tube can be exposed and closed by detachably fitting the fitting portion of the lid body to a fitted portion formed at the rear end portion of the shaft tube. It is a requirement that the crown is mounted at a position protruding in the vertical direction from the lid, and the support portion protruding in the vertical direction and the crown are arranged in contact with each other on the engagement portion side of the lid.
Furthermore, a pressing operation part is formed on the surface of the other end side of the lid body on the crown, and the height of the crown is determined by the distance from the engagement part to the fitting part of the lid body. In other words, it is required that the support portion is in surface contact with at least a part of the outer surface of the upper half of the crown when the pressing operation portion is pressed, and the pressing operation portion is concave.
In the present invention, “front” refers to the pen tip side of the writing instrument, and “rear” refers to the opposite side. Further, “lower” is the axial tube side of the lid (head crown), and “upper” indicates the opposite side.

  According to the present invention, even a writing instrument having a rotating lid that exposes and closes the rear end of the shaft cylinder can be pressed in the radial direction without hooking a nail or the like and pulling up the lid in the axial direction. Since the fitted lid can be easily opened, the lid can be easily and reliably rotated irrespective of the length of the nail and the force of the finger.

It is an external view which shows an example of the writing instrument of this invention. It is an external view of the state which open | released the cover body of the writing instrument of FIG. It is an external view of the state (writing instrument main body) which removed the writing body with a sliding body of the writing instrument of FIG. It is an external view of the state which open | released the cover body in FIG. It is a longitudinal cross-sectional view of FIG. It is a principal part expanded sectional view of FIG. It is a perspective view of a lid and a crown [(a) engagement part side, (b) support part plane side].

Embodiments of the writing instrument of the present invention will be described with reference to the drawings, but the present invention is not limited thereto.
In the writing instrument 1 of the embodiment shown in FIGS. 1 to 7, a plurality of (four) writing bodies are accommodated in a shaft cylinder body 4 to which a front shaft 2 and a rear shaft 3 are attached by screwing so as to be movable in the front-rear direction. ing. A sliding body 9 having the same color as the ink for the writing instrument stored in the ink storage cylinder of the writing body is disposed at the rear part of the writing body, and the writing body is urged rearward by the coil spring 12. Although the details of the writing body are not shown, it is a slide type multi-core writing instrument of a conventionally known retracting mechanism in which other three writing bodies with sliding bodies are arranged in the same manner as the above-described configuration. is there.

  The cursive body is a ballpoint pen refill, specifically, a pen tip portion in which a ball is rotatably held at the tip portion of the ink containing cylinder is mounted, and the black shear thinning viscosity is provided inside the ink containing cylinder. A water-based gel ink having an ink and an ink follower are directly accommodated. Similarly, the other three writing bodies are ballpoint pen refills that are equipped with a pen tip consisting of a ballpoint pen tip at the tip of the ink storage cylinder, and that directly store water-based gel inks and ink followers of different colors in each writing body. is there. In addition to the above-described ballpoint pen refill, a cursive pen unit that can contain an oil-based ink, a mechanical pen unit, an eraser unit, a touch pen unit, or the like can also be used as the writing body.

Four elongated sliding grooves 3b extending in the front-rear direction are formed in the rear portion of the rear shaft 3, and are formed at substantially equal intervals. Each sliding groove 3 b has an opening 3 c that is open at the rear and communicates with the rear end 3 a of the rear shaft 3.
Further, a substantially cylindrical spring support portion 8 is fixed inside the rear shaft 3. The spring support portion 8 has an inner hole through which four writing bodies are inserted in the axial direction, and coil springs 12 and 13 are arranged between the spring support portion 8 and the respective sliding bodies 9 and 10. The writing body and the sliding body are urged backward. Although not shown, the other two sliding bodies, like the sliding bodies 9 and 10, are provided with coil springs 14 and 15 between the spring support 8 and each sliding body, and the writing body. And the sliding body is urged backward.

A concave mounting groove extending along the longitudinal direction is formed in the rear part of the rear shaft 3 (between the two sliding grooves), and a clip 7 is attached to the mounting groove. The clip 7 is fixed to the rear shaft 3 by drop fitting.
Further, at the rear part of the clip 7, a base part 7a is extended so as to protrude from the outer surface of the shaft cylinder, and a circular concave hole-like hinge part 7b is formed at a symmetrical position sandwiching the outer surface of the base part 7a. The hinge portion 7b is engaged with an engaging portion 5a provided at one end of a substantially disc-shaped lid 5 made of polyacetal and extending left and right when the clip 7 is viewed from the front, and the lid 5 is rotated. The rear end 3a of the rear shaft 3 can be exposed by freely engaging and rotating the lid 5. Specifically, the cylindrical projection 5b is formed at a symmetrical position that sandwiches the outer surface of the base portion 7a at the engaging position of the engaging portion 5a, and the engaged state (pivot attachment) with the hinge portion 7b is maintained. ing.

  In addition, a through-hole serving as a fitting portion 5e is formed in the center of the lid 5 in the axial direction, and a fitting projection is formed on the inside thereof. When the lid 5 closes the rear end 3 a of the rear shaft 3, a fitting portion 5 e (protrusion) is formed on the fitted portion 3 d that is formed in the rear end portion of the rear shaft 3 in the axial direction and protrudes rearward. The lid 5 is fitted to the rear shaft 3 so that it can be opened and closed.

Further, the lid 5 is fitted with a substantially dome-shaped crown 6 made of polycarbonate, which is harder and less deformable than the lid 5. Specifically, one side wall (hinge side) of the crown 6 is formed as a plane portion 6a that is chamfered substantially vertically, and is supported by a support portion 5c that extends upward from the lid 5 when the crown is mounted. It will be in the state which contacted the plane and a part. The support portion 5c is provided on the engagement portion 5a side of the lid body 5 so as to extend in the vertical direction from the lid body, thereby converting a radial pressing force into an axial fitting release force. is there. In the present embodiment, the support part is integrally formed with the lid, but a separate part can be attached to the lid and used.
In addition, a recess 6b is formed on the other side wall (that is, the other end side of the lid 5) that is substantially symmetric with the hinge side wall so that the fingertip is in stable contact with the pressing operation. In addition, although the said recessed part 6b is not essential, while forming the position display which shows the optimal location at the time of press release operation, and improving the grip property of a fingertip, it is preferable to form.

  A fitting projection 6c is formed below the flat surface portion 6a of the head crown 6 at a position facing it, and the fitting projection 6c is formed on the outer surface of the engaging portion 5a below the support portion 5c of the lid 5. The crown 6 is mounted so as to cover the lid body 5 by pressing and covering the crown 6 until it fits over the inclined portion 5d. At this time, the lid 5 is held in a substantially contact state with the inner surface of the opening at the bottom of the crown 6, and the lower side of the flat part 6 a is in surface contact with the lower side of the support part 5 c plane. The surface contact portion has a structure in which the entire flat surface of the support portion 5c comes into surface contact with the flat surface portion 6a when the crown is pressed (when the lid is opened), and the crown 6 is moved in the F direction (axial tube). The pressing force at the time of pressing to the radial hinge side) can be reliably transmitted to the support portion 5c, and the lid 5 can be rotated upward.

  In addition, the flat portion 6a and the support portion 5c are easy to position at the time of assembly, and also function as a guide when the head crown 6 is slid downward from above, so that the structure is highly assembled. .

  The height H of the crown 6 is preferably set to be longer than the distance L (both from the center) from the engaging portion 5a (hinge portion 7b) of the lid 5 to the fitting portion 5e. (Refer to FIG. 6) In this case, the pressing force when the head crown is pressed in the F direction (the hinge side in the axial tube diameter direction) can be efficiently converted into the fitting release force, so that the pressing force is weak. Even if it exists, the cover body 5 can be easily opened.

  In order to project the pen tip (ballpoint pen tip) of the writing body accommodated in the shaft cylinder from the tip opening 2a of the front shaft 2, the operation portion 9a of the sliding body 9 is moved along the sliding groove 3b along the front shaft. 2 is slid in the direction of the front end opening 2a, so that the engaging projection formed on the sliding body 9 is locked to the locking portion formed in the rear shaft 3, and the pen point of the writing body is moved to the front end of the front shaft. The protrusion can be maintained by selecting from the opening 2a. The sliding body 9 is provided with a release protrusion.

  The sliding body 10 is released by sliding the operation portion 10a of the other sliding body 10 in the direction of the front end opening 2a of the front shaft 2 in a state where the pen tip of the writing body maintains the protrusion from the front end opening 2a. The protrusion can release the locking of the sliding body 9 via the sleeve 11, and the pen tip portion of the writing body that has been protruding earlier can be immersed in the front shaft 2.

  When the cursive body is exchanged, from the state in which the lid 5 closes the rear end 3a of the rear shaft 3, the concave portion 6b of the crown 6 is pressed to the hinge side (in the direction of arrow F in FIG. 1). The fitting portion 5e and the fitted portion 3d of the rear shaft 3 are disengaged, and the lid body 5 is rotated to expose the rear end 3a of the rear shaft 3. At this time, the lid 5 can be easily released by pressing the recess 6b with a fingertip such as the belly of the thumb, so that the replacement work can be performed regardless of the length of the nail or the force of the finger. Become.

  When the disengaged lid body 5 is rotated and the rear end 3a of the rear shaft 3 is exposed, the sliding bodies 9 and 10 (others not shown) are connected to the coil springs 12 and 13 from the sliding groove 3b. It protrudes to the rear outside by the rear bias. By removing the sliding body 9 from the writing instrument main body 4 from this state, the writing body (writing body with sliding body) connected to the sliding body 9 is taken out from the rear shaft 3 and then newly connected to each other. A new writing body and a new sliding body are inserted into the rear shaft 3 through the sliding groove 3b having an open rear end. Then, the lid body 5 is rotated forward (on the opposite side of the hinge portion), and thereafter, the fitting portion 5e of the lid body 5 and the fitted portion 3d of the rear shaft 3 are fitted, and the rear shaft 3 is The end 3a is closed. As a result, the replacement work of the writing body and the sliding body is completed, so that the user can replace the writing body and the sliding body corresponding to the user's preference in the shaft cylinder, and the writing body and the sliding body can be quickly and reliably stored. Can be replaced.

  In this embodiment, for convenience, the lid is rotated and the rear end of the rear shaft is exposed, and the writing body and the sliding body can be replaced. However, the lid is rotated and the rear end of the rear shaft is exposed. And, it is not particularly limited as long as the rear end of the rear shaft is exposed by rotating the lid, such as filling a lead core, and it is easy without losing the lid even with a weak force It can be opened and closed, and the cursive replacement work and lead core filling can be performed.

  Furthermore, although the shape of the top wall of the head crown is not particularly limited, it is possible to enhance the decorativeness by using a transparent or translucent inner surface of the top wall as a polyhedron such as diamond cut. In addition, the outer surface of the crown can be made a polyhedron similar in shape and size to the polyhedron on the inner surface, and the decorativeness can be enhanced. Furthermore, more decorative effects can be imparted by decorating by printing or sticking.

DESCRIPTION OF SYMBOLS 1 Writing instrument 2 Front axis | shaft 2a Front end opening part 3 Rear axis | shaft 3a Rear end 3b Sliding groove 3c Opening part 3d Fit part 4 Writing instrument main body 5 Lid body 5a Engagement part 5b Cylindrical protrusion 5c Support part 5d Inclination part 5e Fitting Part 6 Head crown 6a Flat part 6b Recessed part 6c Fitting protrusion 7 Clip 7a Base part 7b Hinge part 8 Spring support part 9, 10 Sliding body 9a, 10a Operation part 11 Sleeve 12, 13, 14, 15 Coil spring

Claims (4)

A writing instrument comprising a lid that exposes and closes the rear end of the shaft tube at the rear end of the shaft tube, with a crown attached thereto, on the side surface of the rear portion of the shaft tube from the outer surface of the shaft tube A protruding base portion is formed, an engaging portion provided at one end portion of the lid body is engaged with a hinge portion formed on the base portion, the lid body is rotatably engaged, and the lid body The rear end of the shaft tube can be exposed and closed by detachably fitting the fitting portion to the fitted portion formed at the rear end portion of the shaft tube,
A writing instrument, wherein the crown is mounted at a position protruding in a vertical direction from the lid, and a support portion protruding in the vertical direction on the engagement portion side of the lid and the crown are arranged in contact with each other. . The writing instrument according to claim 1, wherein a pressing operation portion is formed on the head crown on a surface on the other end side of the lid.   The writing instrument according to claim 1 or 2, wherein a height of the head crown is longer than a distance from an engaging portion of the lid to the fitting portion. The writing instrument according to claim 2, wherein the pressing operation portion has a concave shape.

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