JP5379060B2 - Pay-out writing instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a feeding type writing instrument in which a necessary and sufficient amount of a pen point for comfortable writing can project by an easy operation. <P>SOLUTION: The writing instrument has such a structure that an operation part arranged in the front side of a shaft cylinder is operated toward the rear side of the shaft cylinder with one finger of an operator without changing a holding manner in writing, so that a pen point, which is arranged in the shaft cylinder movably in the back and forth direction, moves by a distance longer than the operation distance to project from a shaft cylinder tip. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a protruding structure of a pen tip.

  JP2007-320156

  Especially when the usage is intermittent, such as a highlighter, with only a little use, and a little use, it is convenient to use a writing instrument that can switch between writing and storing as easily as possible. . However, in the case of the one having the knock-type pen tip protruding structure as in Patent Document 1, knocking the operation portion provided at the rear end of the writing instrument and taking the pen tip in and out means writing the writing instrument. This means that it must be changed from the way it is held, and if the frequency increases, it becomes a troublesome task.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. First, in the invention according to claim 1, a core member whose tip side is a pen tip is inserted into the shaft tube from the opening at the tip of the shaft tube. In a writing instrument provided with a pen tip so that it can protrude, a small-diameter rotary part and a large-diameter rotary part that are provided so as to be movable in the front-rear direction on the side surface on the front side of the shaft cylinder, and rotate together by coaxial. A rotating member comprising: an urging member for urging the shaft member on the front side of the shaft tube, and urging the core member toward the rear in the shaft tube, and moving between the operating portion and the small-diameter rotating portion. A first transmission member for transmitting, a second transmission member for transmitting motion between the core member and the large-diameter rotating unit, and the operation unit being moved toward the rear of the shaft tube by an external force from a finger; By operating, the core material is directed forward at a distance that exceeds the operation distance of the operation unit. Dynamic and provides a writing instrument, wherein the pen tip from Jikuto distal opening projects.

  According to a second aspect of the present invention, the small-diameter rotating part has a partially enlarged shape, and the distance from the point where the first transmission member transmits motion to the small-diameter rotating part to the rotation shaft of the rotating member is The writing instrument according to claim 1, wherein the ratio of the operation distance of the operation unit and the movement distance of the pen tip to the operation part changes during the operation by changing with the rotation of the rotating member. To do.

  According to a third aspect of the present invention, transmission of motion from the first transmission member to the small-diameter rotating portion is not performed until halfway through the operation, and the movement start timing of the pen tip is shifted from the start timing of the operation. The writing instrument according to claim 1 is provided.

  According to a fourth aspect of the present invention, the rotating member includes a small-diameter rotating part and a large-diameter rotating part by a pulley, and the first transmission member has one end connected to the small-diameter rotating part and the other end connected to the operation part. The second transmission member is composed of a thread-like member having one end connected to the large-diameter rotating portion and the other end connected to the core member. A writing instrument according to any one of the above is provided.

  According to a fifth aspect of the present invention, the rotating member includes a small-diameter rotating portion and a large-diameter rotating portion using gears, and the first transmission member is a rack provided in the operation portion so as to mesh with the small-diameter rotating portion. The writing instrument according to any one of claims 1 to 3, wherein the second transmission member comprises a rack provided on the core member so as to mesh with the large-diameter rotating portion. To do.

  According to a sixth aspect of the present invention, the operating portion includes a braking mechanism that directly acts on the large-diameter rotating portion in a state where the pen tip completely protrudes from the shaft cylinder tip opening and can be written. The writing instrument according to any one of claims 1 to 5, wherein rotation of the rotating portion is directly inhibited.

  According to a seventh aspect of the present invention, a lid member is connected to the operation portion, and the shaft hole into which the pen tip protrudes is opened and closed in conjunction with the movement of the operation portion. The writing instrument according to any one of the above is provided.

  In the invention according to claim 8, the mechanism for stopping the pen tip in a state in which the pen tip protrudes from the opening at the tip of the shaft cylinder and can be written works by performing an operation independent of the operation for protruding the pen tip. The writing instrument according to any one of claims 1 to 7, wherein the writing instrument is structured.

  The invention according to claim 9 further comprises a stopper mechanism for restricting the movement of the pen tip so that the pen tip does not inadvertently protrude from the opening at the tip of the shaft cylinder. A writing instrument according to claim 1 is provided.

  According to a tenth aspect of the present invention, the pen tip is provided as a single unit or integrated with the core member, and includes a turning mechanism for turning around a straight line passing through the pen tip along the longitudinal direction of the shaft cylinder. A system stop mechanism is provided for stopping the system at a plurality of appropriate angles, and the pen tip can be projected and written from the tip end of the shaft tube while maintaining the angle. The writing instrument according to any one of 1 to 9 is provided.

The effects of the present invention are as follows.
(1) In order to solve the above-mentioned problem, one operation finger (hereinafter referred to as “operation finger”) is used without changing the operation unit installed at the front of the shaft tube from the way of holding when writing. Thus, it is effective to use an operation that causes the pen tip to protrude by moving the operation unit backward.

  However, when the pen tip is large like a fluorescent pen and a lid member interlocking with the above operation needs to be provided near the tip inside the shaft tube, the tip of the shaft tube is extended to another extension such as a ballpoint pen. It is difficult to taper to the level of an expression writing instrument. That is, in order to prevent the tip of the shaft tube from getting in the way during writing, it is necessary to considerably increase the protruding amount of the pen tip outside the shaft tube. This means that it is necessary to make the pen tip movement distance considerably long. However, in the structure in which the movement ratio between the operation distance and the pen tip movement distance is 1: 1, it is only possible to increase the operation distance. This cannot be dealt with, and the bending angle of the operating finger at the end of the operation becomes large, and it becomes difficult to provide comfortable writing.

  Therefore, in the first aspect of the invention, the lever principle is reversed to the structure, and the point of action, that is, the point where the first transmission member transmits the motion to the small-diameter rotating portion with respect to the fulcrum, that is, the rotating shaft, A mechanism that produces an acceleration effect such that the moving distance of the pen tip exceeds the operating distance of the operating part by placing the large-diameter rotating part closer to the point where the movement is transmitted to the second transmission member has a structure that can be used by the above operation. . Thereby, it becomes a writing instrument excellent in the operativity which requires the bending angle of the operation finger at the time of writing small.

(2) As in the first aspect of the invention, the mechanism for obtaining the acceleration effect by the difference in the diameters of the two large and small rotating parts is advantageous in that the pen tip is greatly moved with respect to a small operation distance, but the lid member is In the case of writing instruments that open and close the lid by moving the same distance in conjunction with the operation unit, the disadvantage that the pen tip must be started away from the lid member and the urging force by the urging member etc. are amplified. It has a drawback of being transmitted to the operation unit.

  Considering these drawbacks, the ideal pen tip movement pattern is preferably not accelerated before the lid is opened, but accelerated after the lid is opened.

  The invention according to claim 2 is for obtaining such an effect, for example, a writing instrument using a rotating member in which the diameter of the large diameter portion of the small diameter rotating portion is the same as that of the large diameter rotating portion. The following effects can be obtained by comparing the above case with a writing instrument using a rotating member in which the small-diameter rotating portion is a perfect circle having a single diameter.

  In the first half of the operation, the diameter of the large diameter part of the small diameter rotating part, which is the force point, is the same as the diameter of the large diameter rotating part, which is the point of action, so there is no acceleration effect and the pen tip movement distance can be kept short. It becomes. That is, it is possible to set the pen tip storage position closer to the lid member, and it is possible to shorten the length of the core member, the coil spring, and other members.

  Further, in the case of the perfect circle, the urging force by the urging member is amplified and a load is applied to the operation unit. On the other hand, if the diameter of the large-diameter portion of the small-diameter rotating portion is the same as that of the large-diameter rotating portion, it is amplified. You do n’t have to. This is advantageous in that it provides a lighter operational feeling in the initial stage of the operation where the coefficient of friction is relatively large.

  In the second half of the operation, as in the case of the perfect circle, the power point moves to the small-diameter portion of the small-diameter rotating portion, so that an acceleration effect occurs, and the moving distance of the pen tip exceeds the operation distance of the operating portion. That is, the writing instrument with more excellent operability can be obtained by adding the above two effects without impairing the effects of the first aspect of the invention.

(3) In the invention according to claim 3, in response to the problem described in (2) above, the pen tip is not moved until the lid member opens the shaft hole after the operation is started. Therefore, there is an effect that the position when the pen tip is stored can be set immediately after the lid member.

(4) In any one of the inventions according to claims 1 to 3, when the pen tip is completely projected, the operation portion is in a state of acting with the small diameter portion of the small diameter rotating portion. The urging force by the urging member and the repulsive force from the paper surface are received in an amplified state. In the invention of claim 6, since the braking mechanism provided in the operation unit directly suppresses the large-diameter rotation unit, it is possible to receive a load without amplification, so that the burden on the operation finger at the time of writing is reduced. The effect of lightening is obtained.

(5) In the invention according to claim 7, a structure is used in which the operating portion is moved backward to cause the pen tip to protrude, and the operating portion directly pulls the lid member to open the shaft hole. It was possible. This is effective in that the structure can be simplified as compared with the case where the pen tip or the core material mainly used in the knock type pushes the lid member.

(6) The writing instrument according to the first aspect of the present invention can be used without using a mechanism for mechanically stopping the pen tip as long as the operation part is held down after the pen tip is pulled out by the external force of the operating finger. It is possible to do. Therefore, according to the invention described in claim 8, when the external force is removed, the pen tip automatically returns to the inside of the shaft cylinder, which prevents the pen tip from being forgotten to be returned, and when writing must be continued to some extent. This is a writing instrument that allows the user to use the stop function of the nib arbitrarily.

(7) According to the ninth aspect of the invention, it is effective in that it can be relieved when it is carried by being able to prevent inadvertent protrusion of the pen tip.

(8) According to the invention described in claim 10, for example, in the case of a fluorescent pen, the tip of the pen tip is cut obliquely, so that the tip is used when writing in the horizontal direction and when writing in the vertical direction. It is necessary to adjust the orientation. However, in the case of a writing instrument in which the operation unit is installed at the front part of the shaft cylinder as in the writing instrument according to the present invention, the operation part comes to an obstructive position if it is rotated together with the shaft cylinder. Therefore, in the present invention, the adjustment is made by rotating the pen tip without moving the front portion of the shaft cylinder. As a result, the user of the writing instrument can write without causing the operation unit to get in the way by re-setting the direction of the pen tip according to each when using for vertical writing and horizontal writing. It becomes possible.

Form for carrying out the invention

  The writing instrument according to the present embodiment includes a shaft member 1, a core member 2, a pen tip 3, an operation unit 4, a rotating member integrally formed by a rotating shaft 5, a small-diameter pulley 6 a, and a large-diameter pulley 7, a first thread-like member 8, The second thread-like member 9, the front guide 10, the sealing material 11, the lid member 12, the center guide 13, the coil spring 14, the core material rear part 15, the angle fixing tool 16, and the ink cartridge 18 are configured. (See Figure 1)

  The core material 2 and the core material rear portion 15 are integrally formed of a hard material, and the ink impregnated material is stored in a cavity provided therein. Further, the operation unit 4 has a function of a clip used when the writing instrument is inserted into a pocket of clothes.

  A front guide 10 is attached to the inside of the tip of the shaft tube 1, and the rotating member is pivotally attached to a gap between the front guide 10 and the shaft tube 1. The front guide 10 may be integrally formed with the shaft tube 1. A long hole 19 extending in the longitudinal direction is formed in the side surface of the front portion of the shaft tube 1, and the operation unit 4 is mounted on the shaft tube 1 through the long hole 19. (See Figures 3 and 4)

  The core member 2 having the pen tip 3 at the tip is supported by the front guide 10 and the center guide 13 and is urged backward by the action of the coil spring 14.

  One end of the first thread-like member 8 is attached to an appropriate position of a portion located inside the shaft cylinder in the operation portion 4, and the other end is attached to an appropriate position on the circumference of the small-diameter pulley 6a. Further, one end of the second thread-like member 9 is attached to a protrusion provided in the middle of the core material 2, and the other end is attached to an appropriate position on the circumference of the large-diameter pulley 7. Here, the relationship between the attachment position and size of each member is such that the first thread-like member 8 is wound around the small-diameter pulley 6 almost once around the small-diameter pulley 6 when the pen nib 3 is completely stored. It is preferable that the second thread-like member 9 attached to the pulley 7 is in a substantially extended state. In FIG. 9, the solid line indicates the positional relationship when the pen tip is stored, and the dotted line indicates the positional relationship when the pen tip protrudes.

  The lid member 12 has a wedge-like shape that is thinned toward the tip, and is made of a material having moderate flexibility. Then, in the shaft cylinder, it moves in the front-rear direction along with the movement of the operation unit 4 along a thin space that becomes a guide formed by the surface of the front guide 10 and the inner surface of the shaft cylinder 1, and the tip of the shaft hole of the front guide 10 It is attached to the operation unit 4 so that it can be closed or opened. (See FIGS. 1 and 2) When the writing instrument is not used, the shaft hole of the front guide 10 in which the pen nib 3 is accommodated is a substantially sealed space by the lid member 12 and the sealing material 11, Ink transpiration from the nib 3 can be prevented.

  Next, as shown in FIGS. 4 to 6, the core rear portion 15 has a diameter slightly smaller than the inner diameter of the shaft tube 1, and an angle fixing groove 17 is engraved in the longitudinal direction on the surface. Then, the angle fixing tool 16 is placed on the shaft cylinder 1 so that the inner protruding portion of the angle fixing tool 16 passes through the angle adjusting slit 20 opened in the shaft cylinder 1 and fits in the angle fixing groove 17 in the shaft cylinder 1. Fit. The angle adjusting slit 20 is preferably provided with such a length that the inner protruding portion of the angle fixing tool 16 can move in a range of approximately 90 degrees in the axial direction of the shaft cylinder. If an ink cartridge is to be prepared, the shaft cylinder may be divided so that the ink cartridge 18 can be detachably attached to the core rear portion 15.

  With the above structure, as shown in FIGS. 10 and 11, the operation unit 4 is slid rearward with the index finger of the holding hand from the way of writing. Then, the operation unit 4 rotates the small-diameter pulley 6a together with the large-diameter pulley 7 while opening the first thread-like member 8 wound around the small-diameter pulley 6a. Then, the large-diameter pulley 7 turns the core material 2 forward while winding the second thread-like member 9 longer than the length of the first thread-like member unwound from the small-diameter pulley 6a, and increases the movement distance of the operation unit 4. Move more distances. On the other hand, since the lid member 12 attached to the operation unit 4 is pulled rearward, the tip portion thereof is pulled down, the tip of the shaft hole of the front guide 10 is opened, and the pen tip 3 protrudes from the tip of the shaft tube 1. To do.

  After use, by pulling out the force of the index finger holding the operation unit 4, the core material 2 is moved backward while unwinding the second thread-like member 9 wound around the large-diameter pulley 7 by the biasing force of the coil spring 14. Therefore, the large-diameter pulley 7 rotates together with the small-diameter pulley 6a in the opposite direction to the protruding state, and the small-diameter pulley 6a moves the operation unit 4 forward while winding the first thread-like member 8. At this time, the nib 3 moves backward together with the core member 2 and fits in the shaft hole of the front guide 10. On the other hand, the lid member 12 is pushed forward by the operation unit 4 and moves forward, so that the lid member 12 fits into a position where the front end of the shaft hole of the front guide 10 is closed.

  Next, regarding the pen tip rotation mechanism, when it becomes necessary to change the direction of the tip of the pen tip according to the writing direction, the angle fixing tool 16 installed as described above is attached to the shaft cylinder in the circumferential direction. Is rotated 90 degrees from the core material rear portion 15 to the pen tip 3 to adjust the direction of the tip of the pen tip. (See Figs. 7 and 8)

  In the case of a highlighter pen, when a vertical line is drawn, the right orientation of the pen tip is reversed between the right-handed person and the left-handed person. As a countermeasure, another angle fixing groove is provided at a position 90 ° circumferentially away from the angle fixing groove 17 in the core rear portion 15 so that the angle fixing tool 16 can be attached to and detached from the shaft tube. , A method of fitting on the shaft cylinder so that the protrusion on the inside of the angle fixing device 16 fits in the groove on the side suitable for right-handed and left-handed, or the pen tip can be inserted and removed from the core, and the pen For example, a method of adjusting by re-inserting only the tip into the core may be used.

  Next, regarding the mechanism for mechanically stopping the movement of the nib in the front-rear direction, the writing instrument according to the present embodiment has a pen nib as in a commonly used pay-out type writing instrument. The projecting operation does not lead to an operation for mechanically stopping the pen tip. However, when writing must be continued to some extent, it is more convenient to stop the pen tip in writing. In addition, providing a function for preventing the pen tip from being accidentally protruded is effective in that it can be relieved such as when carrying it. Therefore, the following example is given as a structure in which the user can use these functions arbitrarily.

  A stopper member 21 having a protrusion 23 is pivotally attached to the vicinity of the tip of the clip portion of the operation unit 4 by a pivot shaft 22. The vicinity of the shaft attachment portion is in a state in which the stopper member 21 is strongly sandwiched by the clip portion so that the rotation does not occur unless an external force is applied. On the other hand, a protrusion preventing hole 24 and a return preventing hole 25 arranged in the longitudinal direction are provided on the surface of the shaft tube 1. (See FIGS. 12-14)

  Thus, for example, when it is desired to maintain the exposed state of the pen tip, after the operation unit 4 is slid rearward, the stopper member 21 is operated and the protrusion 23 is stored in the return prevention hole 25. Further, when it is desired to prevent the pen tip from inadvertently protruding, the stopper member 21 may be operated so that the protrusion 23 is accommodated in the protrusion preventing hole 24 in a state where the operation portion 4 is completely returned to the front.

  The writing instrument according to the present embodiment is a small-diameter pulley 6b or a small-diameter pulley having a partially enlarged shape as illustrated in FIG. 15 or FIG. By changing to 6c, with the rotation of the rotating member, the distance between the force point at which the first thread-like member 8 transmits the force to the small-diameter pulley and the rotating shaft serving as the fulcrum changes. Thus, the writing instrument changes in the ratio between the operation distance and the movement distance of the pen tip.

  First, the shape shown in FIG. 15 has the same diameter as that of the large-diameter pulley 7 as the large-diameter rotating portion, and the diameter of the small-diameter portion in FIG. The operation is as follows.

  The power point is located at the end of A in the figure at the start of the operation, and changes from the large diameter part of A in the figure, but the ratio therebetween is 1: 1. Then, when the transition is made to the portion B in the figure, the ratio gradually changes from there and becomes 1: 2 when entering the last portion C. In addition, it is preferable to set the size and attachment position of each member so that the force point moves to the small-diameter portion of C after the end of the shaft hole is opened. (See FIGS. 15 and 16)

  Next, as for the form shown in FIG. 17, compared with the previous example, this is the large diameter portion of A in the figure again when the power point is at the end of the operation, that is, when the pen tip completely protrudes and writing is possible. It is characterized by a transition to The effect is that the urging force from the urging member received at the time of writing and the repulsive force from the paper need not be amplified. (See Figs. 17 and 18)

  The writing instrument according to this embodiment is obtained by replacing the members constituting the protruding structure of the pen tip in the writing instrument according to the first embodiment as follows. In addition, the structure of the member which is not touched in the text is common to the first embodiment.

  A core member 26, a pen tip 27, an operation unit 28, a rotary member integrally formed by a rotary shaft 29, a small diameter gear 30a and a large diameter gear 31, a first rack 32a, a second rack 33, a front guide 34, and a lid member 35. The shaft tube 36 is provided as shown in FIG. The second rack 33 and the core material 26 are integrally formed of a hard material, and the ink impregnation material is stored in a cavity provided therein.

  A front guide 34 is attached inside the tip of the shaft tube 36. The front guide 34 may be integrally formed with the shaft tube 36.

  The shaft tube 36 is provided with a long hole 37, the rotating member is pivotally attached to the edge of a wide portion near the center of the long hole 37, and the operation portion 28 including the first rack 32 a is passed through the long hole 37. Attached to the cylinder 36. As a result, the first rack 32a and the small-diameter gear 30a are engaged with each other. (See FIGS. 21 to 23)

  On the other hand, each tooth of the second rack 33 provided on the surface of the core material 26 is engraved 360 degrees in the circumferential direction, and the second rack 33 and the large-diameter gear 31 are not moved even when the core material 26 is rotated. It is configured to always mesh.

  As shown in FIG. 19, in the state where the pen tip 27 is completely stored, these members are engaged with the vicinity of the rearmost portion of the first rack 32a and the small-diameter gear 30a, and the vicinity of the frontmost portion of the second rack 33. The large-diameter gear 31 is installed in a meshed state.

  With the above structure, when using the writing instrument, the first rack 32a rotates the small-diameter gear 30a together with the large-diameter gear 31 by sliding the operation portion 28 toward the rear of the shaft cylinder with the index finger of the holding hand. The radial gear 31 moves the second rack 33, that is, the core material 26 toward the front. On the other hand, since the lid member 35 attached to the operation portion 28 is pulled rearward, the tip portion thereof is pulled up to open the tip end of the shaft hole of the front guide 34, and the pen tip 27 is the tip opening portion of the shaft tube 36. More prominent. (See Figure 20)

  After use, when the force of the finger holding the operation unit 28 is removed, the core member 26, that is, the second rack 33 is moved rearward by the biasing force of the coil spring, and the nib 27 is placed in the shaft hole of the front guide 34. Fits in. At that time, the second rack 33 rotates the large-diameter gear 31 together with the small-diameter gear 30, and the small-diameter gear 30a moves the first rack 32a, that is, the operation unit 28 forward. On the other hand, the lid member 35 is pushed forward by the operation portion 28 and moves forward, and fits in a position where the front end of the shaft hole of the front guide 34 is closed.

  By changing the members constituting the pen tip protruding structure according to the third embodiment as follows, it becomes possible to provide a writing instrument with more excellent operability.

  The small-diameter gear that is the small-diameter rotating portion is partially enlarged in diameter, and the small-diameter large-diameter portion 38 that has the same diameter as the large-diameter gear 31, the small-diameter small-diameter portion 39 that is half the diameter, and the small-diameter that connects the two. It changes to the small diameter gear 30b of the form which consists of the gear relay part 40. On the other hand, the first rack as the first transmission member is connected to the first rack upper step portion 41 and the first rack lower step portion 42 so as to always mesh with the small-diameter gear 30b during the operation. It changes to the first rack 32b of the form which consists of the part 43. FIG. A braking member 44 made of an elastic material is provided on the front end surface inside the operation unit. (See Figure 24)

  The operation of each member in accordance with the operation is as follows. First, as shown in FIG. 24, in the first half of the operation, the first rack upper step portion 41 meshes with the small-diameter large-diameter portion 38 to rotate the rotating member. The ratio of the movement distance between the operation unit and the pen tip at this time is 1: 1. Then, after rotating to some extent, this time, as shown in FIG. 25, the first rack relay portion 43 and the small-diameter gear relay portion 40 are engaged with each other and the rotating member is rotated. The ratio at this time is about 1: 1.5. Then, after slightly rotating, as shown in FIG. 26, the first rack lower step portion 42 meshes with the small diameter gear small diameter portion 39 to rotate the rotating member. The ratio at this time is 1: 2. When the pen tip 27 is completely protruded and can be written, the braking member 44 comes into contact with the teeth of the large-diameter gear 31 to inhibit the rotation of the rotating member.

  If there is a margin in the setting of the operation distance, as described in the second example of the second embodiment, if the small-diameter large-diameter portion meshes with the first rack again at the end of the operation, The urging force from the urging member to be received and the repulsive force from the paper surface can be effectively amplified without using the braking member.

  By changing the first rack 32a in the third embodiment to the following shape, it is possible to provide a writing instrument with more excellent effects.

  As shown in FIG. 27, the shape of the first rack is changed to approximately half the length of the object in Example 3, so that the rotating member does not rotate in the first half of the operation. That is, it is possible to wait for the lid member 35 to open the shaft hole and start the operation of the pen tip. As a result, compared to the fourth embodiment, the start position of the pen tip is made more to the lid member 35. It becomes possible to approach. However, in this case, a portion where the operation of the core material due to the urging force of the coil spring cannot be transmitted to the operation portion occurs, and the operation portion and the lid member 35 cannot be returned to a predetermined position. Therefore, in this embodiment, the operation portion coil spring 45 is provided in the shaft cylinder, and the operation portion is urged forward.

  As mentioned above, although the thing using a pulley and the thing using a gearwheel were mentioned, the same effect is acquired even if it is the structure which combined them. For example, a pulley using a small-diameter rotating part and a gear using a large-diameter rotating part may be used, or a gear using a small-diameter rotating part and a pulley using a large-diameter rotating part may be used. Further, as the transmission member, a belt-like member may be used instead of the thread-like member.

FIG. 3 is a side development view of the writing instrument of Example 1 in a pen nib storage state. It is a side surface (front part) expanded view in the state which protruded the pen tip of the writing instrument of Example 1. FIG. It is the XX sectional view taken on the line in FIG. It is a shaft cylinder top view of the writing instrument of Example 1. FIG. It is the YY sectional view taken on the line in FIG. It is the ZZ sectional view taken on the line in FIG. FIG. 3 is a side view of the writing instrument of Example 1 in a state where the pen tip is stopped in a direction suitable for horizontal writing. FIG. 3 is a side view of the writing instrument of Example 1 in a state where the pen tip is stopped in a direction suitable for vertical writing. 3 is a schematic diagram illustrating the operation of a rotating member and a thread-like member of the writing instrument of Example 1. It is the figure showing the state which stored the nib in the handle of the writing instrument of Example 1. FIG. It is a figure showing the state which protruded the pen tip within the handle of the writing instrument of Example 1. FIG. It is a mechanism part side view at the time of system stop of the mechanism which mechanically stops the movement of the nib in the front-rear direction. It is a mechanism part side view at the time of the system stop cancellation | release of the mechanism shown in FIG. It is a mechanism part top view of the mechanism shown in FIG. It is a positional relationship figure of the rotation member at the time of the operation start of a writing instrument of Example 2, and a filamentous member. FIG. 16 is a positional relationship diagram in a state where the operation is finished from the state shown in FIG. 15. It is a positional relationship figure of the rotation member at the time of the operation start of a writing instrument of Example 2, and a filamentous member. It is a positional relationship figure in the state which finished operation from the state shown in FIG. It is a side surface expanded view in the pen-tip accommodation state of the writing instrument of Example 3. FIG. It is a side surface (front part) development view in the state where the pen tip of the writing instrument of Example 3 was exposed. It is the WW sectional view taken on the line in FIG. It is a shaft cylinder top view of the writing instrument of Example 3. It is the VV line expanded view in FIG. It is a side surface (front part) expanded view of the writing instrument of Example 4 at the time of the operation start. It is a side surface (front part) development view in the middle of operation of the writing instrument of Example 4. It is a side surface (front part) expanded view of the writing instrument of Example 4 at the time of completion | finish of operation. It is a side surface (front part) expansion | deployment figure at the time of the operation start of the writing instrument of Example 5. FIG. It is a side surface (front part) expansion | deployment figure at the time of completion | finish of operation of the writing instrument of Example 5. FIG.

DESCRIPTION OF SYMBOLS 1 Shaft cylinder 2 Core material 3 Pen tip 4 Operation part 5 Rotating shaft 6 Small diameter pulley 7 Large diameter pulley 8 1st thread-like member 9 2nd thread-like member 10 Front guide 11 Sealing material 12 Lid member 13 Central guide 14 Coil spring 15 Core material Rear portion 16 Angle fixing tool 17 Angle fixing groove 18 Ink cartridge 19 Long hole 20 Angle adjustment slit 21 Stopper member 22 Rotating shaft 23 Projection 24 Protrusion prevention hole 25 Return prevention hole 26 Core material 27 Pen tip 28 Operation unit 29 Rotating shaft 30 Small-diameter gear 31 Large-diameter gear 32 First rack 33 Second rack 34 Front guide 35 Lid member 36 Shaft cylinder 37 Long hole 38 Small-diameter gear large-diameter portion 39 Small-diameter gear small-diameter portion 40 Small-diameter gear relay portion 41 First rack upper stage Part 42 first rack lower step part 43 first rack relay part 44 braking member 45 coil spring for operation part

Claims (10)

  In a writing instrument in which a core material whose tip side is a pen tip is provided in the shaft tube so that the pen tip can protrude from the opening at the tip of the shaft tube, the operation unit is arranged in the front-rear direction on the side surface on the front side of the shaft tube. A rotating member comprising a small-diameter rotating part and a large-diameter rotating part, which are provided so as to be movable to each other and coaxially rotate together, is pivotally attached to the front side of the shaft cylinder, and the core material is directed toward the rear in the shaft cylinder. A biasing member for biasing, a first transmission member for transmitting motion between the operating portion and the small-diameter rotating portion, and transmitting motion between the core member and the large-diameter rotating portion. A second transmission member is provided, and by performing an operation such as moving the operation unit toward the rear of the shaft cylinder by an external force from a finger, the core material moves forward a distance that exceeds the operation distance of the operation unit, A writing instrument, wherein the pen tip protrudes from the opening at the tip of the shaft cylinder.   The small-diameter rotating part has a partially enlarged shape, and the distance from the point where the first transmission member transmits motion to the small-diameter rotating part to the rotating shaft of the rotating member is accompanied by the rotation of the rotating member. The writing instrument according to claim 1, wherein the ratio of the operation distance of the operation unit and the movement distance of the pen tip to the operation part changes during the operation.   The movement transmission from the first transmission member to the small-diameter rotating portion is not performed until halfway through the operation, and the pen tip movement start time is shifted from the operation start time. The writing instrument according to 1.   The rotating member includes a small-diameter rotating portion and a large-diameter rotating portion by a pulley, and the first transmission member includes a thread-like member having one end connected to the small-diameter rotating portion and the other end connected to the operation portion. The writing instrument according to any one of claims 1 to 3, wherein the second transmission member includes a thread-like member having one end connected to the large-diameter rotating portion and the other end connected to the core member. .   The rotating member includes a small-diameter rotating portion and a large-diameter rotating portion using gears, and the first transmission member includes a rack provided in the operation portion so as to mesh with the small-diameter rotating portion, and the second transmission member. The writing instrument according to any one of claims 1 to 3, wherein the writing instrument comprises a rack provided on the core member so as to mesh with the large-diameter rotating part.   In a state where the pen nib completely protrudes from the opening at the tip of the shaft tube and can be written, the operation unit includes a braking mechanism that directly acts on the large-diameter rotating unit, and directly inhibits rotation of the large-diameter rotating unit. The writing instrument according to any one of claims 1 to 5, wherein:   The lid member is connected to the operation unit, and the shaft hole into which the pen tip protrudes is opened and closed in conjunction with the movement of the operation unit. Writing instrument.   The mechanism for stopping the pen tip in a state where the pen tip protrudes from the opening at the tip of the shaft cylinder and is writable is configured to work by performing an operation independent of the operation for protruding the pen tip. The writing instrument according to any one of claims 1 to 7.   The writing instrument according to any one of claims 1 to 8, further comprising a stopper mechanism that restricts movement of the pen tip so that the pen tip does not inadvertently protrude from the opening portion of the shaft tube tip.   A rotation mechanism that rotates the pen tip as a single body or integral with the core member, with a straight line passing through the pen tip along the longitudinal direction of the shaft cylinder as an axis, the rotation at each of a plurality of appropriate angles. A system stop mechanism for stopping the system is provided, and the pen tip can be protruded and written from the opening at the tip of the shaft cylinder while maintaining the angle. Writing instrument described in the section.

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