JP4773585B1 - Writing instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To operate a pen tip from an accommodation state to a use state with a minimum fingertip movement amount without sacrificing the picking feeling in a writing state in which a contour near a pen tip of a writing instrument is picked with a fingertip. In addition, it is desirable to be able to switch between a plurality of pen tips with a minimum amount of fingertip movement without sacrificing the picking feeling in a writing state in which the outline near the pen tip of the writing instrument is picked with a fingertip. ) In the writing state in which the outer portions (5) and (6) near the pen tip are picked by the index finger and the thumb, respectively, the outer portions (5) and (6) can be moved relative to each other in the longitudinal direction of the writing instrument (1). To do.
[Selection] Figure 1

Description

  The present invention relates to a writing instrument.

  In the writing instrument, as in the example of Patent Document 1, an operation unit that is slidable in the longitudinal direction of the writing instrument is provided on the outline near the pen tip that is generally picked by the thumb, index finger, and middle finger during writing, There is known an idea that the pen tip comes out from one end of the writing instrument by sliding the operation unit in the direction of the pen tip of the writing instrument.

  In the writing instrument, as in the embodiment of Patent Document 2, three bundled pen nibs are fixed inside the rod-shaped writing instrument, and each of the pen nibs provided with the three pen nibs is one end of the writing instrument. The idea of always coming out of is known.

Japanese Patent Laid-Open No. 05-294097 JP 2005-219472 A

  In writing instruments, when taking out a writing instrument from a pen case or the like and starting the writing work, it tries to start the writing work quickly by picking the outline near the pen tip of the writing instrument with the fingertip, but the pen tip is in the accommodation state. It is often the case that the user has noticed that he / she is holding the writing instrument while operating his / her operation part while holding the writing tool while holding the tongue. Therefore, in the writing state where the outline near the pen tip of the writing instrument is picked with the fingertip, it is desired that the pen tip can be operated from the housed state to the use state with a minimum fingertip movement amount without sacrificing the picking feeling. In the idea such as No. 1, when the operability is taken into consideration, the unevenness at the sacrifice of the picking feeling is made near the operation portion.

  In addition, in writing instruments, it is desirable to be able to switch between multiple pen tips with a minimum amount of fingertip movement without sacrificing the picking feeling in the writing state where the outline near the pen tip of the writing instrument is picked with the fingertips. In the idea as described in Document 2, the pen tip that is not used for writing work is hindered from the comfortable writing work by reducing the visibility to the pen tip in use, and the pen tip that is not used is paper. There is a high possibility that the writing surface such as will be stained unexpectedly.

  Embodiments of the present invention will be described below with reference to the drawings. However, this is intended to make the contents of the present invention easier to understand, and does not reduce the scope of the appended claims.

Writing instrument according to the invention 1, as for example from 1 to 8,
An outer shell part 5 forming a part of the outer shell of the intermediate part 3 in the longitudinal direction of the writing instrument 1;
An outer part 6 that forms part of the outer part of the intermediate part 3 and is guided to be movable with respect to the outer part 5 along the longitudinal direction of the writing instrument 1;
A loading / unloading cam mechanism engaged with the outer shell parts 5 and 6;
A pen tip 14 connected to the take-in / out cam mechanism;
Comprising
The pen tip 14 can be inserted and removed from the longitudinal end 1 of the writing instrument 1 by the insertion and removal cam mechanism .
FIGS. 1 and 4 in which the pen tip 14 is placed in the writing instrument 1, and the housing state as shown in FIG. 7 or 8 ;
When the outer portion 6 is moved by the first distance relative to the outer portion 5 in the direction of the one end portion 2 from the accommodated state, the pen tip 14 is moved in the direction of the one end portion 2 in the direction of the one end portion 2 by the first and second cam mechanisms. A first use state as shown in FIGS. 2 and 5 that has moved a second distance longer than one distance;
This is a writing instrument.

  Here, the writing instrument is a pencil, a pencil that sends out a lead, a felt pen, a fountain pen, a ballpoint pen, a correction pen, a stylus pen, an eraser that sends out a lead, a makeup pen, and the like.

The writing instrument according to the second aspect of the present invention is the writing instrument according to the first aspect of the present invention, for example, as shown in FIG.
The writing instrument is provided with a pen tip 13 that is disposed at one end 2 in the longitudinal direction of the writing instrument 1 and connected to the outer portion 5.

Writing instrument according to the invention 3, as for example from 1 to 12,
An outer shell part 5 forming a part of the outer shell of the intermediate part 3 in the longitudinal direction of the writing instrument 1;
An outer part 6 that forms part of the outer part of the intermediate part 3 and is guided to be movable with respect to the outer part 5 along the longitudinal direction of the writing instrument 1;
A first loading / unloading mechanism that engages with the outer shell parts 5 and 6;
A second loading / unloading mechanism that engages with the outer shell parts 5 and 6;
Pen nibs 14 and 13 connected to the first and second loading / unloading mechanisms respectively;
Comprising
The pen nibs 14 and 13 can be inserted and removed from the longitudinal end 1 of the writing instrument 1 by the first and second insertion / removal mechanisms, respectively.
1 and 4 with the nibs 13 and 14 in the writing instrument 1, and the accommodation state as shown in FIG. 7, 8, 9, or 10;
By moving the outer portion 6 by the first distance relative to the outer portion 5 in the direction of the one end portion 2 from the accommodated state, the pen tip 14 is moved in the direction of the one end portion 2 in the direction of the one end portion 2 by the first loading / unloading mechanism. The first use state as shown in FIGS. 2 and 5 or FIG. 11 that has moved by a second distance longer than the first distance;
When the outer portion 5 is moved by a third distance with respect to the outer portion 6 in the direction of the one end portion 2 from the accommodated state , the pen tip 13 is moved with respect to the outer portion 6 in the direction of the one end portion 2 by the second loading / unloading mechanism. A second use state as shown in FIG. 6 or 12 that has moved a fourth distance longer than the third distance;
This is a writing instrument.

  As described above, in the present invention, in the general writing state where the index finger and the tip of the thumb are pressed against the outer portions 5 and 6 near the pen tip 14 of the writing instrument 1, respectively, the index finger and the thumb are used as they are. The design can be easily performed from the housed state to the first use state by a slight relative movement in the longitudinal direction, and without sacrificing the picking feeling in the writing state.

The figure showing the accommodation state of a 1st embodiment The figure showing the 1st use condition of a 1st embodiment AA line sectional view of FIG. Schematic diagram of the loading / unloading mechanism of the first embodiment (accommodated state) Schematic diagram of first embodiment (first use state) Schematic diagram of the loading / unloading mechanism of the first embodiment (second usage state) Schematic diagram of the loading / unloading mechanism of the second embodiment (accommodated state) Schematic diagram of the loading / unloading mechanism of the third embodiment (accommodated state) Schematic diagram of the loading / unloading mechanism of the fourth embodiment (accommodated state) Schematic diagram of the loading / unloading mechanism of the fifth embodiment (accommodated state) Schematic diagram of the loading / unloading mechanism of the fifth embodiment (first use state) Schematic diagram of the loading / unloading mechanism of the fifth embodiment (second use state)

A first embodiment of the present invention will be described with reference to FIGS.

The cylindrical rod-shaped writing instrument 1 has a structure that is divided into two vertically in the longitudinal direction. One intermediate part has an outer part 5 and the other intermediate part has an outer part 6, and a contact part between the two parts. The claws 15 and 69 are guided by grooves 16 and 70 arranged along the other longitudinal direction, and are supported so as to be linearly movable in a certain section. A hole 7 provided at one end of the one end 2 penetrates to the hole 17 and guides a rod-shaped pen core 19 including a pen tip 13 and an ink 21, and a hole 8 provided at the other end of the one end 2. Passes through the hole 18 and guides the pen core 20 including the pen tip 14 and the ink 22.
4 to 6, which are schematic diagrams, are diagrams for explaining a loading / unloading mechanism disposed in the writing instrument 1, and a portion in the direction of the arrow AA in FIG. 1 is extremely short. A cam surface composed of surfaces 23 to 26 is provided inside one of the vertically divided members, and includes a slider 30, a swing axis 27, an arm 31, a swing axis 28, an arm 32, a swing axis 29, In the order of the lid 12, a link mechanism is provided which is connected in series so as to be swingable along each swing axis. The lid 12 is screwed to the other end 4 and the slider 30 is linearly movable in a hole having a guide shape 33 and the rear end of the pen core 20 is connected. The biasing force is transmitted in the direction of the other end portion 4 by 34, and this biasing force is transmitted so that the vicinity of the swing axis 28 of the arm 31 is brought into contact with and guided by the cam surface. In addition, in the schematic diagram, the insertion / removal mechanism for the pen tip 13 is omitted, but actually, the same insertion / removal mechanism as that for the pen tip 14 is incorporated.
The arm 31 that is in contact with the surface 23 in the accommodated state of FIG. 4 slides on the cam surface in the process of shifting to the first use state of FIG. The biasing force of 34 decreases slightly when it reaches the surface 26. In the process of shifting from the housed state to the second use state of FIG. 6, the arm 31 slides on the surface 23, but the direction in which the groove 16 guides the claw 15 and the surface 23 are parallel, and the urging force of the urging member 34 changes. do not do.

In addition, if a positive cam mechanism that changes the cam surface to a guide groove and guides the vicinity of the swing axis 28 of the arm 31 is employed, the pen tip 14 can be inserted and removed without the urging member 34.
Further, instead of the urging member 34, a tension spring may be provided between the swing axes 27 and 29, or a torsion coil spring, a leaf spring, or the like may be provided at the swing axes 27, 28, or 29.

A second embodiment of the present invention will be described with reference to FIG.

In the second embodiment, since the structure of the first embodiment is slightly changed, only the changed part will be described.
The arms 31 and 32 and the urging member 34 of the first embodiment are removed, and a torsion coil spring having the oscillating axis 28 as the center of the coil is installed so as to be urged in the direction in which the oscillating axes 27 and 29 approach. The outer periphery of the coil comes into contact with the cam surface and is guided, and a very simple loading / unloading mechanism can be configured.

  Further, instead of the torsion coil spring, an L-shaped bar or plate having spring elasticity may be used, or these springs may be integrally formed with one or both of the slider 30 and the lid 12 with resin or the like. .

A third embodiment of the present invention will be described with reference to FIG.

In the third embodiment, since the structure of the first embodiment is slightly changed, only the changed part will be described.
The arms 31 and 32 of the first embodiment are removed, and a shaft pin centering on the swing axis 37 is installed on the side provided with the outer shell portion 6 having a structure in which a cylindrical rod is divided into two in the longitudinal direction. One end 39 of the arm 38 supported so as to be swingable around the shaft pin is in contact with the cam surface comprising the surfaces 23, 24, 25 and 26, and the other end 36 is in contact with the surface 68 of the slider 30. The arm 38 is urged counterclockwise by the urging force of the urging member 34 about the swing axis 37 in FIG.

A fourth embodiment of the present invention will be described with reference to FIG.

Since 4th Embodiment changes the structure of 1st Embodiment, it describes about a changed location.
The cam surface, the arms 31 and 32, and the urging member 34 of the first embodiment are removed, and the slider 30 is opposed to the side including the outer shell portion 5 having a structure in which a cylindrical bar is vertically divided into two. In this manner, racks 43 and 40, and spur gears 42 that are engaged with the racks 40 and 43 and have an axis 41 that is disposed on the outer shell 6 side as a center of rotation are provided.

A fifth embodiment of the present invention will be described with reference to FIGS.

Since the fifth embodiment is a modification of the structure of the first embodiment, only the changed part will be described.
The cam surface, the arms 31 and 32, and the urging member 34 of the first embodiment are removed, and the slider 30 is opposed to the side including the outer shell portion 5 having a structure in which a cylindrical bar is vertically divided into two. Thus, a magnet having an arrangement of N pole 47 and S pole 48 and a magnet having an arrangement of N pole 45 and S pole 46 are provided so as to repel each other.
The slider 30 urged in the direction of the other end 4 by the magnetic repulsive force in the accommodated state of FIG. When the state shifts from this state to the first use state of FIG. 11, the biasing force to the slider 30 by the magnetic repulsive force changes in the direction of the one end portion 2, and the slider 30 hits the contact 35 and is stationary. Further, when shifting from the housed state to the second use state of FIG. 12, the magnets are separated from each other, the values of the magnetic repulsive force and the magnetic attractive force are decreased, and the slider 30 is stopped at a position balanced with gravity. In addition, in the schematic diagram, the insertion / removal mechanism of the pen tip 13 is omitted, but actually, the same insertion / removal mechanism as the insertion / removal mechanism of the pen tip 14 is incorporated, and the magnetic force of the magnet used for each of the insertion / removal mechanisms is incorporated. When interference becomes a problem, each of them may be arranged at a distance in the longitudinal direction of the writing instrument 1.

Other embodiments of the present invention will be described.

  The dimensional relationship of the loading / unloading mechanism of the first embodiment is slightly changed, and the swing axis 28 is guided to the cam surface in the first use state of FIG. 5 and the swing axis 28 is closer to the outer portion 6 side than the plane passing the swing axes 27 and 29. If a toggle latch mechanism that moves and abuts against the inner wall is used, the pen tip 14 that has come out can be maintained as it is. In addition, if an operation part that penetrates the inner wall and protrudes from the outline of the writing instrument 1 is provided and is latched so as to come into contact with the operation part, when the operation part is pushed into the inner wall side, the latch is released and the pen tip 14 is returned. I can do it.

  In the first to fifth embodiments, a conventional knock mechanism or delivery mechanism may be provided without providing the pen tip 13 with the same insertion / extraction mechanism as that of the pen tip 14.

  In all the above-mentioned embodiments, various cross-sectional shapes such as a polygonal shape and a teardrop shape that have been used for conventional writing instruments instead of a circular shape may be used.

  In all the embodiments described above, it is easy for those skilled in the art to change the design of the ballpoint pen to another writing instrument, and thus detailed description thereof is omitted.

1. Writing instrument 2, 39. One end 3. Middle part 4, 36. Other end 5, 6. Outer part 7, 8, 17, 18. Hole 9, 10. Abutting part 11, 12. Lid 13, 14. Pen tip 15, 69. Claw 16, 70. Groove 19, 20. Pen core 21, 22. Ink 23, 24, 25, 26, 68. Surface 27, 28, 29, 37. Oscillating axis 30. Slider 31 32. 38. Arm 33. Guide shape 34. Biasing member 35, 44. Per 40, 43. Rack 41. Axis 42. Spur gears 45, 47. N pole 46, 48. S pole

Claims (3)

A first outer part forming a part of an outer part of the intermediate part in the longitudinal direction of the writing instrument;
A second outer portion that forms a part of the outer shell of the intermediate portion and is movably guided with respect to the first outer portion along the longitudinal direction of the writing instrument;
A loading / unloading cam mechanism engaged with the first outer portion and the second outer portion;
A first nib connected to the take-in / out cam mechanism;
Comprising
The first nib can be taken in and out from one end in the longitudinal direction of the writing instrument by the taking in and out cam mechanism ,
An accommodation state in which the first nib is placed in the writing instrument;
The second outer portion is moved by a first distance relative to the first outer portion in the direction of the one end portion from the accommodated state, so that the first cam portion is moved in the direction of the one end portion by the taking-out cam mechanism. A first use state in which the first nib has moved a second distance longer than the first distance;
Having
Writing instrument. A second pen tip disposed at one end of the writing instrument in the longitudinal direction and connected to the first outer portion;
The writing instrument according to claim 1. A first outer part forming a part of an outer part of the intermediate part in the longitudinal direction of the writing instrument;
A second outer portion that forms a part of the outer shell of the intermediate portion and is movably guided with respect to the first outer portion along the longitudinal direction of the writing instrument;
A first loading / unloading mechanism that engages with the first and second outer portions;
A second loading / unloading mechanism that engages with the first and second outer portions;
First and second nibs connected to the first and second loading / unloading mechanisms respectively;
Comprising
The first and second pen nibs can be inserted and removed from one end in the longitudinal direction of the writing instrument by the first and second insertion / removal mechanisms, respectively.
An accommodation state in which the first and second nibs are placed in the writing instrument;
By moving the second outer portion by a first distance relative to the first outer portion in the one end portion direction from the accommodated state, the first take-out mechanism moves the first outer portion in the one end portion direction. A first use state in which the first nib has moved a second distance longer than the first distance;
The first outer portion is moved by a third distance relative to the second outer portion in the direction of the one end portion from the accommodated state, so that the second insertion / extraction mechanism moves the first outer portion in the direction of the one end portion relative to the second outer portion. A second use state in which the second nib has moved for a fourth distance longer than the third distance;
Having
Writing instrument.

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