JP6351099B2 - Applicator - Google Patents

Description

  The present invention relates to an applicator such as a marking pen, and more particularly to a knock-out applicator.

  One applicator is called a marking pen. A marking pen is a type of writing instrument that has a nib tip made of resin, fiber bundles, etc., and is used for applications such as writing characters or pictures by drawing ink from the nib tip or drawing lines. It is.

Knock-type ballpoint pens are widely known. The knock-type ballpoint pen is a ballpoint pen having a structure in which a tip of a pen tip protrudes from a shaft cylinder, and a knock cylinder is attached to the rear end of the shaft cylinder. The knock-type ballpoint pen has a writing core housed in a shaft cylinder. When the knocking cylinder at the rear end is pushed, the internal writing core moves in the axial direction, and a nib tip comes out from the opening at the front end of the shaft cylinder. In addition, there is an axial locking member inside the shaft cylinder, and the writing core stops in a state where the nib tip protrudes from the opening at the tip of the shaft cylinder.
When the knock cylinder is pushed again, the engagement of the axial locking member is released, the writing core moves backward, and the nib tip is accommodated in the axial cylinder.

By the way, a marking pen of the knock type has been developed. The knock type marking pen has a coating core 120 built in the shaft cylinder 110 as shown in FIG. As shown in FIG. 28, the coating core 120 is obtained by mounting the pen tip 101 on the ink storage member 100, and the coating portion 107 at the tip of the pen tip 101 is exposed from the tip of the ink storage member 100. Then, by pushing the knock cylinder at the rear end, the pen tip application portion 107 protrudes from the tip opening of the shaft cylinder.
In the knock type marking pen, a shutter 111 is provided at the tip opening 121 of the shaft tube 110.
That is, since the marking pen employs a pen tip such as a resin or a fiber bundle, the application portion 107 of the pen tip 101 is wet with ink. Therefore, it is necessary to prevent the application unit 107 from drying. Therefore, in the knock type marking pen, when the shutter 111 is provided at the tip opening of the shaft tube 110 and the coating unit 107 is in the shaft tube 110, the shutter 111 is closed to seal the shaft tube 110, and the coating unit 107 is dried. Is preventing.

As described above, the marking pen of the prior art has the coating core 120 built in the shaft cylinder 110. As shown in FIG. 28, the ink storage member 100 of the coating core 120 has a large-diameter and cylindrical ink reservoir 102 and a small-diameter and cylindrical pen-tip mounting portion 103.
In the marking pen disclosed in Patent Document 1, there is a protrusion at the tip of the pen tip mounting portion 103, the shutter is pushed by the protrusion, and the shutter is rotated to open the shutter.

Further, the marking pen of the prior art is arranged so that the pen tip mounting portion 103 of the ink storage member 100 and the shaft are sealed in order to seal the space for housing the coating portion 107 when the coating portion 107 is housed in the shaft cylinder 110. An airtight structure is provided between the inner surface of the cylinder 110.
That is, as shown in the conceptual diagram of FIG. 27, the inner flange 105 is provided in the shaft cylinder 110, and the pen tip mounting portion 103 of the ink storage member 100 is inserted through the central through hole of the inner flange 105. An O-ring 106 is provided between the inner flange 105 and the pen tip mounting portion 103 of the ink storage member 100 to isolate the front end side in the shaft tube 110 from the rear end side.
Therefore, the space in which the nib tip 101 is accommodated is an airtight space in which the front end side is sealed by the shutter 111 and the rear end side is sealed by the inner flange 105 and the nib mounting portion 103 of the ink storage member 100.

  Further, in the conventional marking pen, the ink reservoir 102 has a sealed structure. On the other hand, a groove 113 is provided on the inner peripheral surface of the pen tip mounting portion 103 as shown in FIG. 29, and the groove 113 is provided between the pen tip tip 101 and the inner peripheral surface of the pen tip mounting portion 103. A communication path 115 is formed. The communication passage 115 serves as an air passage, and the ink in the ink reservoir 102 is replaced with air, thereby preventing negative pressure in the ink reservoir 102 due to consumption of the ink.

Japanese Patent No. 4973013

The marking pen of the prior art has a knock type structure in practical use, and drying of the application part 55 is also prevented.
However, the conventional marking pen has a problem that the amount of ink contained is small. The marking pen has an ink storage member 100, and ink is stored in the ink storage portion 103 of the ink storage member 100. Here, in the conventional marking pen, as described above, the O-ring 106 is provided between the pen tip mounting portion 102 of the ink storage member 100 and the inner surface of the shaft tube 110 to provide an airtight structure. On the other hand, since the marking pen is a knock type, the pen tip mounting portion 102 of the ink storage member moves in the axial direction. When the pen tip mounting portion 102 of the ink storage member 100 moves in the axial direction, the pen tip mounting portion 102 of the ink storage member 100 needs to keep in contact with the O-ring 106. Therefore, the pen tip mounting portion 102 of the conventional marking pen needs to have a length that exceeds at least the amount of movement of the ink storage member 100. Therefore, in the conventional marking pen, the length of the pen tip mounting portion 102 of the ink storage member 100 must be increased, and conversely, the total length of the ink storage portion 103 is short.
For this reason, the amount of ink that can be stored is small and cannot be used for a long time.

Further, the conventional marking pen has a problem that the pen tip mounting portion 102 of the ink storage member 100 is thick and it is difficult to apply and write, and the application portion 107 is difficult to see during application and writing.
That is, the marking pen of the prior art introduces air from the tip of the pen tip mounting portion 102 to replace the ink in the ink reservoir 100 with air, and prevents negative pressure in the ink reservoir 100 during application. Yes. In the conventional marking pen, a groove 113 is provided on the inner peripheral surface of the pen tip mounting portion 102, and the ink in the ink reservoir 103 is replaced with air using the groove 113 as an air passage.
Therefore, according to the structure of the prior art, the thickness of the pen tip mounting portion 102 must be at least a thickness that allows the groove 113 to be formed, and the outer diameter of the pen tip mounting portion 103 cannot be reduced.

  Accordingly, the present invention focuses on the above-described problems of the prior art and improves the applicator having a shutter member at the front end opening, which can increase the amount of ink contained, and the pen tip of the ink storage member. It is an object to develop an applicator capable of reducing the diameter of the mounting portion.

  The invention according to claim 1 for solving the above-described problem is directed to a shaft cylinder having a tip opening, a shutter member that opens and closes the tip opening, a moving body having an application portion at the tip, and a shaft cylinder. A knock member mounted so as to be movable in the axial direction, the movable body being in the shaft tube and movable in the axial direction, and urging the pressure member toward the rear end side of the shaft tube An applicator that moves the moving body against the biasing means by moving the knock member against the biasing means to project the application portion from the tip opening of the shaft tube, and in the axial direction together with the knock member or the knock member The moving member has a movable flange, the shaft cylinder has a fixed flange, and the movable flange and the fixed flange are urged in the direction in which the movable flange and the fixed flange come close to each other by the urging force of the urging means. During the sea A applicator, wherein a member is provided.

The applicator of the present invention is a marking pen or the like and is a retractable applicator, and has a shutter member that opens and closes the tip opening of the shaft tube. In the applicator of the present invention, there are a movable side flange, a fixed side flange and a seal member on the rear end side of the shaft tube, and airtightness is ensured on the rear end side of the shaft tube. Therefore, the applicator of the present invention can make most of the region of the shaft tube an airtight space by the shutter member that seals the front end opening of the shaft tube and the airtight structure provided on the rear end side of the shaft tube.
In the applicator of the present invention, since the airtightness is not secured by the pen tip mounting portion 102, the length of the pen tip mounting portion 102 is not limited. Therefore, it is possible to shorten the pen tip mounting portion 102, and conversely, it is possible to widen the space for storing ink.
Further, according to the structure of the present invention, since air can be supplied from a portion other than the pen tip mounting portion 102 to a portion for storing ink, there is no need to provide a groove in the pen tip mounting portion 102, and the pen tip mounting portion 102 Can be made thinner.

  As a specific structure, it has a rotor, and the rotor is in the shaft cylinder and can be rotated and moved in the axial direction. Between the rotor and the shaft cylinder or other members, It is conceivable that an axial movement blocking means for blocking the movement in the axial direction is provided, the movable side flange is provided in the rotor, and the fixed side flange is provided in the shaft cylinder.

  As another specific structure, the shaft cylinder is provided with a rear end opening, and a part of the knock member protrudes from the rear end opening, and the knock member is provided with a movable flange and fixed to the rear end opening. A side flange may be provided (claim 3).

  Since the applicator of the present invention can open and close the tip opening with the shutter member, the writing part can be prevented from drying. Moreover, the applicator of the present invention can increase the amount of ink accommodated. Furthermore, the applicator of the present invention can make the pen tip mounting portion of the ink storage member thinner.

It is a perspective view of the marking pen of the embodiment of the present invention. (A) is sectional drawing of the marking pen of FIG. 1, and shows the state by which the nib tip was accommodated in the axial cylinder, (b) is the enlarged view of the front-end | tip part and the rear end vicinity, (c) FIG. 4 is an enlarged view of a tip portion in a section AA in (a). (A) is sectional drawing of the applicator of FIG. 1, and shows the state which the nib tip protruded from the axial cylinder, (b) is the enlarged view of the front-end | tip part and the rear end vicinity, (c) is ( It is an enlarged view of the front-end | tip part in the AA cross section of a). It is a disassembled perspective view of the applicator of FIG. It is a disassembled sectional view of the axial cylinder of the applicator of FIG. It is a perspective view of the shutter member incorporated in the applicator of FIG. The shutter member incorporated in the applicator of FIG. 1 is shown, (a) is its front view, (b) is its plan view, (c) is its left side view, and (d) is its right side view. . It is a perspective view of the rotation member built in the applicator of FIG. 1 shows a rotating member built in the applicator of FIG. 1, (a) is a front view thereof, (b) is a plan view thereof, (c) is a left side view thereof, (d) is a right side view thereof, (E) is the bottom view. (A) is sectional drawing of the rotation member incorporated in the applicator of FIG. 1, (b) is AA sectional drawing of (a). It is a disassembled perspective view of the moving body incorporated in the applicator of FIG. It is sectional drawing of the moving body of the applicator of FIG. It is a perspective view of the pressing member incorporated in the applicator of FIG. FIG. 1 shows a pressing member built in the applicator of FIG. 1, (a) is a front view thereof, (b) is a right side view thereof, and (c) is a rear view thereof. It is an AA cross-section perspective view of FIG. It is a perspective view of the rotor of the applicator of FIG. (A) is the perspective view of the knock cylinder of the applicator of FIG. 1, (b) is the side view which observed it from A direction. It is a disassembled perspective view which shows the structure of the front-end | tip part of the applicator of FIG. It is a perspective view which shows operation | movement of the front-end | tip part of the applicator of FIG. 1, (a) shows the state which closed the front-end | tip opening of the axial cylinder, and (b) shows the mode of the process of opening a shutter member. (C) shows a state in which the shutter member opens the tip opening of the shaft tube and the pen tip protrudes from the tip opening. It is a conceptual diagram which shows the operation | movement of the front-end | tip part of the applicator of FIG. 1, (a) shows the state which closed the front-end | tip opening of the axial cylinder, (b) shows the shutter member at the front-end | tip opening of an axial cylinder. The state where is opened. It is a conceptual diagram which shows the modification of the front-end | tip part of an applicator, (a) shows the state which the shutter member closed the front-end | tip opening of a shaft cylinder, (b) shows the shutter member open | released the front-end opening of a shaft cylinder Shows the state. It is a conceptual diagram which shows the modification of the rear-end part of the applicator of other embodiment of this invention. It is a conceptual diagram which shows the other modification of the rear-end part of an applicator. It is a conceptual diagram which shows the other modification of the rear-end part of an applicator. It is a conceptual diagram which shows the other modification of the rear-end part of an applicator. It is a conceptual diagram which shows the other modification of the rear-end part of an applicator. It is sectional drawing of the principal part of the applicator of a prior art. It is a perspective view of the ink storage member employ | adopted with the applicator of a prior art. It is an expanded sectional perspective view of the ink storage member employ | adopted with the applicator of a prior art.

Embodiments of the present invention will be further described below.
The applicator 1 of this embodiment is a knock type marking pen.
The applicator 1 of this embodiment has a shaft cylinder 2 as shown in FIGS. 1, 2, and 3, a moving body 3 is built in the shaft cylinder 2, and a knock cylinder 5 at the rear end is pushed. The application portion 55 at the tip of the nib tip 7 protrudes from the tip opening 6 of the shaft tube 2. Further, in the applicator 1 of the present embodiment, the shutter member 8 that seals the tip opening 6 is provided, and when the application portion 55 of the pen tip 7 is in the shaft cylinder 2, the shutter member 8 is the tip opening 6. Is closed.

Hereinafter, each member which comprises the applicator (marking pen) 1 is demonstrated. The shaft cylinder 2 is a cylinder made of resin, and includes a rear end cylinder 10 and a front end cylinder 11 as shown in FIGS. 1, 2, 3, 4, and 5.
The rear end cylinder 10 is a cylinder that is open at both ends. The rear end tube 10 has a slightly smaller outer diameter on the front end side. That is, the rear end cylinder 10 is provided with a small diameter portion 66.
An intermediate flange (fixed side flange) 12 is provided inside the rear end cylinder 10 as shown in FIG. The intermediate flange 12 is an inner flange and has an opening 13 at the center.

A slit 15 is formed on the rear end side (knock cylinder 5 side) of the rear end cylinder 10. The slit 15 communicates the inside and outside of the rear end tube 10 and is provided in parallel with the axis CL of the rear end tube 10 (CL is also the axis of the applicator).
A linear motion guide groove 65 is provided on the inner surface of the rear end cylinder 10 at a position closer to the rear end side than the intermediate flange 12. The linear motion guide groove 65 is also provided in parallel with the axis CL of the rear end cylinder 10.
Further, a protrusion 74 is provided on the inner surface of the rear end cylinder 10 at a position closer to the rear end side than the intermediate flange 12.

As shown in FIGS. 4 and 5, the front end tube 11 is a tube having a tapered portion with a tapered front end portion, and the front end and the rear end are open.
The opening at the tip of the tip tube 11 functions as the tip opening 6. A step portion 16 is provided on the inner surface side of the tip tube 11 and at the opening end of the tip opening 6.
Further, in the vicinity of the distal end opening 6 (tapered portion) inside the distal end cylinder 11, there is a turning recess 17. The turning recess 17 is provided at two positions facing each other across the axis CL. The turning recess 17 has a short groove shape, and the groove (turning recess 17) is closed on the front end opening 6 side and opened on the rear end side.
Further, an arcuate guide groove 19 is provided in the tip tube 11 and in the vicinity of the tip opening 6.

  The shaft cylinder 2 is formed by inserting the small diameter portion 66 of the rear end cylinder 10 into the rear end of the front end cylinder 11 and forming a storage space therein. In the present embodiment, the region from the tip opening 6 to the intermediate flange 12 functions as the main component built-in portion 92, and the region behind the intermediate flange 12 functions as the knock member disposing portion 93.

As shown in FIGS. 2, 3, and 4, the shaft cylinder 2 includes a shutter member 8, a rotating member (rotating body) 21, a moving body 3, a pressing member 23, and a rotor 25. The shaft cylinder 2 includes a first O-ring (seal member) 26, a second O-ring (seal member) 27, and a spring (biasing means) 28. That is, these members are all disposed in the main component built-in portion 92 of the shaft cylinder 2 (except for a part of the rotor 25).
A part of the knock cylinder 5 is also in the shaft cylinder 2. That is, a part of the knock cylinder 5 and a part of the rotor 25 are disposed in the knock member disposing portion 93.

As shown in FIGS. 6 and 7, the shutter member 8 is a member including a spherical portion 30 and support leg portions 31 a and 31 b. The spherical portion 30 has a shape obtained by cutting a part of the spherical surface, and the outer surface is a spherical surface.
The support leg portions 31 a and 31 b are connected to the end portion of the spherical portion 30, and are provided at an angle close to perpendicular to the plane of the spherical portion 30. Precisely, the support legs 31a and 31b are formed in a direction in which the free ends are slightly separated from each other.
The support leg portions 31a and 31b are provided at positions facing each other as shown in FIGS. 6 and 7, and there is a space 91 between the support leg portions 31a and 31b.

Rotating shafts 32a and 32b are provided in the vicinity of the free ends of the support legs 31a and 31b. The rotary shafts 32a and 32b are on the outer peripheral surface side of the support leg portions 31a and 31b and protrude outward, and as shown in FIGS. 6, 7A and 7B, the axes RC of both coincide. The cross-sectional shapes of the rotary shafts 32a and 32b are egg-shaped as shown in FIGS. That is, the cross-sectional shape of the rotating shafts 32a and 32b is not a perfect circle, but the length from the center to the peripheral surface is long or short.
More specifically, the cross-sectional shapes of the rotating shafts 32a and 32b are egg-shaped, and have a major axis L and a minor axis W as shown in FIG. In the present embodiment, the long diameter L is disposed substantially parallel to the spherical surface portion 30, and the short diameter W is disposed substantially perpendicular to the spherical surface portion 30.

  An engagement protrusion 33 is formed on one support leg 31a. The engagement protrusion 33 protrudes outside the support leg 31a. The axis line of the engagement protrusion 33 and the axis line RC of the rotary shafts 32a and 32b do not coincide. That is, the engagement protrusion 33 is provided at a position eccentric in the rotation direction around the center line cl of the shutter member 8.

Further, as shown in FIG. 7C, the engagement protrusion 33 and the rotation shaft 32a are spaced apart by a distance D when the rotation shaft 32a is viewed from the front, and this distance D is equal to the rotation shaft 32a and the spherical surface. It is shorter than the distance H with the part 30.
Focusing on the distance along the direction of the center line cl of the shutter member 8, the engagement protrusion 33 and the rotation shaft 32a are separated by a distance h along the direction of the center line cl. The distance h along the direction of the center line cl between the two is shorter than the distance H along the direction of the center line cl between the rotation shaft 32a and the spherical portion 30.
That is, the engagement protrusion 33 is provided at a position shifted by a distance h in the direction of the center line cl of the applicator 1 with respect to the rotation shaft 32a.

  As shown in FIG. 7C, the angle of the engagement protrusion 33 with respect to the rotation shaft 32a is 30 ° to 60 ° when the angle θ (theta) between the engagement protrusion 33 and the center line cl is viewed from the front. Degree is desirable. That is, if the angle θ (theta) is 90 degrees, a moment for rotating the shutter member 8 does not occur even if the engagement protrusion 33 is moved in the lateral direction. Conversely, if the angle θ (theta) is 0 degree, the moment for rotating the shutter member 8 is large, but the rotation angle of the shutter member 8 becomes small.

When the two rotation shafts 32a and 32b of the shutter member 8 are rotatably supported, the spherical surface portion 30 of the shutter member 8 can rotate around the rotation shafts 32a and 32b as shown by an arrow B in FIG. It becomes a state.
At that time, the engagement protrusion 33 rotates about the rotation shaft 32a as indicated by an arrow A.
Conversely, when the engagement protrusion 33 is moved in the direction of arrow A, the spherical surface portion 30 of the shutter member 8 rotates as indicated by arrow B.
As described above, the distance D between the engaging protrusion 33 and the rotation shaft 32a and the distance h in the direction of the center line cl are shorter than the distance H in the direction of the rotation shaft 32a, the spherical portion 30 and the center line cl. The spherical portion 30 is greatly rotated by moving the engaging protrusion 33 slightly in the direction of the arrow A.
Further, since the engagement protrusion 33 is provided at a position shifted by a distance h in the direction of the center line cl of the applicator 1 with respect to the rotation shaft 32a, the engagement protrusion 33 is set in a direction perpendicular to the direction of the center line cl. When energized, a moment for rotating the shutter member 8 about the rotation shafts 32a and 32b is generated.

The rotating member 21 is a cylindrical member, and the inside is a cavity.
A rotation guide groove 36 is provided on the inner peripheral surface 35 of the rotation member 21 as shown in FIG. The rotation guide groove 36 is a rotation body side engaging portion, and is a part that generates a component force in the rotation direction on the rotation member 21. The rotation guide groove 36 is a groove extending from one end surface 38 of the rotation member 21 toward the other end.
The rotation guide groove 36 has an inclined portion 68. That is, the rotation guide groove 36 is open to one end surface 38 side, and the vicinity of the end surface 38 side is parallel to the axis of the rotation member 21. An inclined portion 68 that is inclined with respect to the axis of the rotation member 21 is provided at the central portion of the rotation guide groove 36 in the longitudinal direction. Further, the portion ahead is parallel to the axis of the rotating member 21. The inclined portion 68 may be linear or curvilinear.
A turning recess 37 is provided on the inner peripheral surface of the rotating member 21 and in the vicinity of the other end surface 67 as shown in FIGS. The turning recess 37 is open to both one end surface 67 and the inner peripheral surface of the rotating member 21.

As shown in FIG. 11, the moving body 3 includes a support member 22, a nib tip 7, and an ink storage body 53.
The support member 22 is a member having a support frame portion 46 and a pen tip mounting portion 43. The support frame portion 46 has a shape like a heel. That is, the support frame portion 46 is configured by a front end support portion 45 and a hook-like portion 47 as shown in FIG.
The front end support part 45 has a shallow cylindrical shape. That is, the front end support portion 45 has a circular plate-like portion 70, and a peripheral wall 71 is provided at the peripheral end thereof. A slit 72 is provided in the peripheral wall 71. The slit 72 is provided for the sake of molding.

The hook-shaped portion 47 is provided in a part of the peripheral portion of the front end support portion 45 and has an arc surface of about 180 degrees. There are protrusions (not shown) on the outer peripheral surface of the bowl-shaped portion 47.
As described above, the bowl-shaped portion 47 of the support member 22 has a bowl-like shape, and the side surface is greatly opened. That is, it can be said that there is a large opening 90 on the side surface of the support member 22.
A space surrounded by the front end support portion 45 and the bowl-shaped portion 47 functions as the occlusion body holding portion 50.

A pen tip mounting portion 43 is provided on the plate-like portion 70 of the front end support portion 45. The pen tip mounting portion 43 is an elongated cylinder. One end of the pen tip mounting portion 43 is open to the occlusion body holding portion 50.
The cross-sectional shape of the pen tip mounting portion 43 is circular, and there is no groove as in the prior art.
An engaging protrusion 48 is provided on the outer peripheral surface of the pen tip mounting portion 43. The engaging protrusion 48 is a moving body side engaging portion.
The engaging protrusion 48 is divided into a straight line portion 61 and a tip bend portion 62. The straight portion 61 is a ridge that is on the surface of the pen tip mounting portion 43 and extends parallel to the axis of the applicator 1. The tip curved portion 62 is a leading portion of the straight portion 61 and is a ridge extending in a direction intersecting the straight portion 61. The length of the tip curved portion 62 is substantially equal to the width of the turning guide groove 36 of the turning member 21 described above.
The tip of the pen tip mounting portion 43 has two chamfered portions 69a and 69b. The chamfered portions 69a and 69b are provided to prevent interference with the shutter member 8.

The pen tip 7 is a member having an application part (pen point part) 55 and a shaft part (lead-out part) 54. In the present embodiment, the application portion 55 and the shaft portion 54 are made of the same material, and both are integrated.
The pen tip 7 is made of a resin having a gap extending in the axial direction inside, and ink can be guided from the shaft portion 54 to the application portion 55 by the capillary phenomenon of the shaft portion 54.
The shape of the application part 55 of the nib tip 7 is the same as that of a known marking pen, and is, for example, a conical shape or a shape whose tip is cut into a peak shape.
The shaft portion 54 of the nib tip 7 has a circular cross-sectional shape, and its outer diameter is narrower than that of the application portion 55.
The outer diameter of the shaft portion 54 is substantially equal to the inner diameter of the pen tip mounting portion 43 of the support member 22 described above.

The ink occlusion body 53 is a member called batting and is a member in which fibers are intertwined. The ink occlusion body 53 is soaked with ink.
The movable body 3 is configured such that the shaft portion (lead-out portion) 54 of the pen tip 7 is inserted into the pen tip mounting portion 43 of the support member 22, and the ink storage body 53 is installed in the storage body holding portion 50 of the support member 22. It is.
In the occlusion body holding part 50 of the support member 22, the front end support part 45 covers the front end part of the ink occlusion body 53, and the hook-like part 47 covers about half of the peripheral surface of the ink occlusion body 53. That is, the occlusion body holding part 50 of the support member 22 only covers a part of the ink occlusion body 53. In the state where the ink occlusion body 53 is installed in the occlusion body holding part 50, a part of the ink occlusion body 53 is provided. Is directly exposed.

The shaft portion 54 of the nib tip 7 passes through the nib mounting portion 43 and the tip thereof reaches the occlusion body holding portion 50 and is inserted into the ink occlusion body 53 as shown in FIG.
The application part 55 of the nib tip 7 is exposed from the nib mounting part 43.

  As described above, the outer diameter of the shaft portion 54 is substantially equal to the inner diameter of the pen tip mounting portion 43 of the support member 22 described above, and the region of the shaft portion 54 that is inserted into the pen tip mounting portion 43 is illustrated in FIG. As shown in FIGS. 12 and 15, the entire outer periphery is in close contact with the inner peripheral surface of the pen tip mounting portion 43. Since it is not necessary to provide a groove in the pen tip mounting portion 43, the pen tip mounting portion 43 may be thinner than the conventional one. Therefore, the outer diameter of the pen tip mounting portion 43 can be made smaller than before.

In this embodiment, the pressing member 23 is a member that functions to hold the occlusion body holding portion 50 by pressing the rear end of the support member 22 and to function as a movable flange. The pressing member 23 has a disk shape.
That is, one surface of the pressing member 23 functions as the movable flange surface 41. One surface of the pressing member 23 functions as the ink occlusion body pressing 42.
The movable flange surface 41 has a circular raised portion 39 slightly raised at the center, and a circular concave portion 44 is provided at the central portion.
In addition, an O-ring attaching portion 49 is provided around the circular raised portion 39.

A protrusion 73 is provided on one surface of the surface that functions as the ink occlusion body presser 42. The protrusions 73 are formed radially on one surface of the pressing member 23. In the present embodiment, six ridges 73 are provided at equal intervals from the center.
In addition, the circumferential surface of the pressing member 23 has a portion that is drawn closer to the center than the ends of the protrusions 73. That is, the part where the peripheral surface reaches the tips of the ridges 73 and the part that does not reach the tips are provided alternately. The diameter of the circumscribed circle of the pressing member 23 is equal to the diameter of the front end support portion 45 of the support member 22. Accordingly, the diameter of the portion drawn to the center side from the end portions of the protrusions 73 is smaller than the diameter of the front end support portion 45 of the support member 22.

  The rotor 25 is a known member and is a member having a large diameter portion 75 and a small diameter portion 76. A saw blade portion 77 is formed on the end surface of the small diameter portion 76 of the large diameter portion 75. A groove 78 is provided on the peripheral surface of the large diameter portion 75. The groove 78 is open on the end surface on the narrow diameter portion 76 side and does not reach the end surface on the opposite side.

The knock cylinder 5 is also a generally known member. The knock cylinder 5 is a cylinder whose rear end is closed, and is provided with a saw blade-like portion 80 on the open end face side. A protrusion 81 is provided on the side surface of the knock cylinder 5. The tip of the projection 81 in the axial direction is sharp.
A guide groove 84 is provided on the side surface of the knock cylinder 5 and in the vicinity of the opening end.

Next, the relationship between each member mentioned above is demonstrated.
In the present embodiment, the shutter member 8, the rotating member 21, the moving body 3, the pressing member 23, and the rotor 25 are built in the storage space of the shaft cylinder 2.
The shutter member 8 is in the vicinity of the tip opening 6 of the shaft tube 2. The rotating shafts 32a and 32b of the shutter member 8 are engaged with a turning recess 17 provided inside the distal end tube 11 as shown in FIGS. 2 (c) and 3 (c).
A part of the shutter member 8 is engaged with an arcuate guide groove 19 provided inside the tip opening 6. Therefore, the shutter member 8 is in the vicinity of the tip opening 6 and rotates about the rotation shafts 32a and 32b.
Here, in a state in which the shutter member 8 is mounted on the shaft cylinder 2, the extension lines (axis line RC) of the rotation shafts 32 a and 32 b of the shutter member 8 are orthogonal to the axis line CL of the shaft cylinder 2. Therefore, the shutter member 8 rotates about a direction orthogonal to the axis CL of the shaft cylinder 2 as a rotation axis.

When the shutter member 8 is rotated about the rotation shafts 32a and 32b, the engagement protrusion 33 formed at the eccentric position moves along an arc locus about the rotation shafts 32a and 32b. Therefore, when the shutter member 8 is rotated about the rotation shafts 32 a and 32 b, the engagement protrusion 33 formed at the eccentric position moves with a rotation component centered on the axis of the applicator 1. That is, when the shutter member 8 is rotated about the rotation shafts 32 a and 32 b, the engagement protrusion 33 moves along a locus having a lateral component with respect to the applicator 1.
Conversely, when the engagement protrusion 33 is moved in the lateral direction, the shutter member 8 rotates about the rotation shafts 32a and 32b.

  Further, when the first O-ring 26 is mounted on the step portion 16 provided at the opening end of the tip opening 6 of the shaft cylinder 2, the spherical portion 30 of the shutter member 8 is in a posture to cover the tip opening 6. A first O-ring 26 is sandwiched between the spherical portion 30 and the tip opening 6.

A rotating member 21 is built in the rear end side of the shutter member 8. The rotating member 21 is rotatable within the shaft tube 2.
The engaging protrusion 33 of the shutter member 8 is engaged with a part of the rotating member 21. More specifically, the engaging protrusion 33 of the shutter member 8 is engaged with the turning recess 37 of the end surface 67 of the rotating member 21 as shown in FIG.

The moving body 3 is located on the rear end side of the rotating member 21. And the front-end | tip part of the moving body 3 is inserted in the hole of the center of the rotation member 21 like FIG. 2, FIG. More specifically, the application portion 55 of the nib tip 7 of the moving body 3 and the nib mounting portion 43 of the support member 22 are inserted into the rotating member 21.
The engaging protrusion 48 provided on the pen tip mounting portion 43 is engaged with the turning guide groove 36 provided on the inner surface of the turning member 21.

Further, springs (biasing means) 28 are arranged around the pen tip mounting portion 43 of the moving body 3, and both ends of the spring 28 abut against the front end support portion 45 of the moving body 3 and the rear end surface of the rotating member 21. Yes.
In the moving body 3, a protrusion (not shown) is engaged with a groove (not shown) of the shaft cylinder 2. Therefore, the moving body 3 has a degree of freedom only in the axial direction and cannot rotate.

  A pressing member 23 is disposed at the rear end of the moving body 3. A second O-ring (seal member) 27 is attached to the O-ring attachment portion 49 of the movable flange surface 41 of the pressing member 23.

  Further, the rotor 25 and the knock cylinder 5 are arranged on the rear end side (movable side flange surface 41 side) of the pressing member 23. That is, the small-diameter portion 76 of the rotor 25 is rotatably inserted into the knock cylinder 5, and both are arranged on the rear end side of the pressing member 23 in this state. The large-diameter portion 75 of the rotor 25 is inserted into the opening 13 of the intermediate flange 12 and protrudes into a region (main component built-in portion 92) in which the moving body 3 is accommodated. It is in contact with a recess 44 formed at the center.

The knock cylinder 5 is on the rear end side with respect to the intermediate flange 12, and the guide groove 84 is engaged with the linear guide groove 65 inside the shaft cylinder 2. Therefore, the knock cylinder 5 has a degree of freedom only in the axial direction and cannot rotate.
The protrusion 81 of the knock cylinder 5 is engaged with the slit 15 of the shaft cylinder 2. Therefore, the knock cylinder 5 does not come off the shaft cylinder 2.

Next, the function of the applicator 1 will be described.
When the applicator 1 is not in use, the movable body 3 is pulled backward, and the applicator 55 is accommodated in the shaft tube 2. The spherical portion 30 of the shutter member 8 seals the tip opening 6.
When the shutter member 8 is in a sealed state, the center line cl of the shutter member 8 is in a posture that coincides with the center line (axis line CL) of the applicator 1.

At this time, the rotating member 21 and the shutter member 8 are pressed toward the tip opening 6 by the spring (biasing means) 28, and the first O-ring arranged between the shutter member 8 and the tip opening 6 as shown in FIG. 26 is compressed. Therefore, airtightness between the spherical surface portion 30 of the shutter member 8 and the tip opening 6 is ensured.
Similarly, the movable body 3 and the pressing member 23 are biased toward the intermediate flange 12 by a spring (biasing member) 28, and the second O-ring provided on the movable side flange surface 41 of the pressing member 23 as shown in FIG. The (seal member) 27 is sandwiched between the movable flange surface 41 of the pressing member 23 and the intermediate flange 12 and compressed. Therefore, airtightness between the pressing member 23 and the intermediate flange 12 is ensured. That is, the main component built-in portion 92 in the shaft cylinder 2 becomes an airtight space cut off from the outside.

Thus, when the application part 55 is accommodated in the shaft cylinder 2, the tip opening 6 side is sealed by the shutter member 8, and the opening 13 of the intermediate flange 12 is sealed by the pressing member 23. Between 6 and the intermediate flange 12 (main component built-in portion 92) is an airtight space.
Therefore, drying of the application part 55 is prevented.
In this embodiment, the occlusion body holding part 50 of the support member 22 has a large opening 90, and a part of the ink occlusion body 53 is exposed, but the space in which the ink occlusion body 53 is accommodated (main component built-in). Since the portion 92) itself has an airtight structure, evaporation of ink from the ink storage 53 is suppressed.

  When using the applicator 1, the knock cylinder 5 at the rear end is pushed in. As a result, the rotor 25 moves to the tip opening 6 side together with the knock cylinder 5, and moves the moving body 3 to the tip opening 6 side against the spring. The operations of the knock cylinder 5 and the rotor 25 are known. When the knock cylinder 5 is pressed once, the rotor 25 is rotated by the action of the saw blade portion 77 and the saw blade portion 80, and the groove of the rotor 25 is rotated. 78 engages with the protrusion 74 on the inner surface of the shaft cylinder 2 to prevent the knock cylinder 5 from retreating. When the knock cylinder 5 is pushed again, the rotor 25 further rotates, the engagement between the groove 78 of the rotor 25 and the protrusion 74 on the inner surface of the shaft cylinder 2 is released, and the knock cylinder 5 moves backward. In the present embodiment, the knock cylinder 5 and the rotor 25 constitute axial movement prevention means.

When the knock cylinder 5 at the rear end is pushed in, the pressing member 23 is moved in the axial direction by being pushed by the rotor 25. That is, the pressing member 23 is a member that moves in the axial direction together with the knock cylinder 5 and the rotor 25.
Accordingly, when the knock cylinder 5 is moved in the axial direction, the pressing member 23 is moved toward the tip opening 6 along with this movement.
As a result, as shown in FIG. 3, the movable-side flange surface 41 of the pressing member 23 is separated from the intermediate flange 12 serving as the fixed-side flange, and the opening 13 of the intermediate flange 12 is opened.
For this reason, the airtightness of the main component built-in portion 92 is broken, and air can enter the main component built-in portion 92.

Further, when the knock cylinder 5 at the rear end is pushed in and the movable body 3 is moved to the front end opening 6 side, the engagement protrusion 48 of the movable body 3 is also advanced. Here, the engaging protrusion 48 provided on the pen tip mounting portion 43 of the movable body 3 is engaged with the turning guide groove 36 provided on the inner surface of the turning member 21, and the turning guide groove 36 is provided with the turning guide groove 36. There is an inclined portion 68 inclined with respect to the axis of the rotating member 21. The moving body 3 has a degree of freedom only in the axial direction and does not rotate. On the other hand, the rotating member 21 can rotate in the shaft cylinder 2.
Therefore, when the moving body 3 moves linearly and the engaging protrusion 48 provided on the pen tip mounting portion 43 passes through the inclined portion 68 of the rotation guide groove 36, a rotational force is generated on the rotation member 21, and the rotation is generated. The moving member 21 rotates.

Further, since the engaging protrusion 33 of the shutter member 8 is engaged with the turning recess 37 of the end surface 67 of the rotating member 21, when the rotating member 21 is rotated, the shutter member 8 is moved as shown in FIG. The engagement protrusion 33 moves in the lateral direction. Here, the rotation shafts 32a and 32b of the shutter member 8 are engaged with the turning recess 17 provided in the inside of the distal end cylinder 11 as shown in FIGS. 2C and 3C. The protrusion 33 moves while drawing an arc locus around the rotation shafts 32a and 32b, and the shutter member 8 rotates in a direction perpendicular to the axis CL of the shaft tube 2 as shown in FIG. . That is, when the rotation member 21 is rotated, the engaging protrusion 33 is forcibly moved in the lateral direction, and the shutter member 8 is rotated about the rotation shafts 32a and 32b.
Finally, as shown in FIG. 19C, the spherical surface portion 30 of the shutter member 8 assumes a vertical posture with respect to the axis of the shaft cylinder 2, and the tip opening 6 is opened.
At this time, as shown in FIG. 19C, the application part 55 reaches the front end side from the shutter member 8 and protrudes from the front end opening 6.

  In the applicator 1 of the present embodiment, the linear motion of the moving body 3 is once converted into a rotational motion by the action of the rotation guide groove 36 and further converted into a rotational motion of the shutter member 8. Therefore, the shutter member 8 can be largely rotated even if the moving amount of the moving body 3 is small. Therefore, the applicator 1 of this embodiment has a short movement stroke of the knock cylinder and is easy to use.

In addition, in the applicator 1 of this embodiment, when the shutter member 8 rotates from the closed posture to the open posture, the shutter member 8 moves slightly rearward and weakens the compressive force of the first O-ring 26.
Hereinafter, this operation will be described.
In the applicator 1 of this embodiment, the cross-sectional shape of the rotating shafts 32a and 32b is egg-shaped, and the length from the center to the peripheral surface is long or short. The rotating shafts 32a and 32b engage with a turning recess 17 provided inside the tip tube 11 of the shaft tube 2, and the tip of the turning recess 17 is closed.

In the present embodiment, when the shutter member 8 is in the closed posture, as shown in FIG. 20A, the rotation shafts 32a and 32b have the short diameter side on the closing portion 94 side of the turning recess 17, and the shutter member 8 is It can move to a position close to the tip opening 6 as shown in FIG.
On the other hand, when the shutter member 8 is in the open position, as shown in FIG. 20B, the rotary shafts 32a and 32b are in contact with the closing portion 94 of the turning recess 17 on the long diameter side, and the shutter member 8 is Move away from the opening 6.
Therefore, in the applicator 1 of this embodiment, when the shutter member 8 rotates from the closed position to the open position, the shutter member 8 moves slightly rearward to prevent the first O-ring 26 from being worn.

When the shutter member 8 is opened and the application part 55 protrudes from the tip opening 6, the user can draw lines and characters using the application tool 1.
Ink is consumed by drawing lines and characters, but when the application part 55 protrudes from the tip opening 6, both ends of the main component built-in part 92 are open, and the main component built-in part Air may flow into 92.
Further, the portion of the support member 22 that accommodates the ink occlusion body 53 has a large opening 90, and a part of the ink occlusion body 53 is exposed, so that the ink occlusion body 53 does not become negative pressure.

Further, according to the structure of the applicator 1 of the present embodiment, it is not necessary to secure an air flow path by a groove or the like, so that the tip end portion of the pen tip mounting portion 43 can be made thin. Easy to see.
In this embodiment, since there are few members which cover the ink occlusion body 53, the ink occlusion body 53 can be enlarged, and the amount of ink which can be accommodated is large.

  In addition, since the applicator 1 of the present embodiment ensures airtightness on the rear end side from the position where the ink occluding body 53 is provided, the length of the pen tip mounting portion 43 can be shortened. It is possible to secure a large capacity for storing the divided ink storage body 53. Also from this point, the applicator 1 of the present embodiment has a large amount of ink that can be accommodated.

  Furthermore, since the moving stroke of the moving body 3 is short, a large capacity for accommodating the ink storage body 53 can be secured. Also from this point, the applicator 1 of the present embodiment has a large amount of ink that can be accommodated.

  In the embodiment described above, the rotating shafts 32 a and 32 b of the shutter member 8 are engaged with the shaft cylinder 2, and the engaging protrusion 33 of the shutter member 8 is engaged with the rotating member 21. However, the present invention is not limited to this configuration. The rotating shafts 32 a and 32 b of the shutter member 8 are engaged with the rotating member 21, and the engaging protrusion 33 of the shutter member 8 is engaged with the shaft cylinder 2. Also good.

According to this configuration, the shutter member 8 rotates in the direction intersecting the axis while rotating along the axis of the applicator 1.
Further, when adopting a configuration in which the rotating shafts 32a and 32b of the shutter member 8 are engaged with the rotating member 21 and the engaging protrusion 33 of the shutter member 8 is engaged with the shaft tube 2, as shown in FIG. The moving member 21 is provided with an engaging portion 82 such as a protrusion or a groove, and when the shutter member 8 rotates, the engaging portion 82 is engaged with any portion (for example, the protrusion 89) on the inner surface of the shaft tube 2. It is desirable to employ a configuration in which the shutter member 8 is moved backward as shown in FIG.

In the embodiment described above, the rotation guide groove 36 is adopted as the rotating body side engaging portion provided on the rotating member 21 side, and the engaging protrusion 48 is used as the moving body side engaging portion provided on the moving body 3 side. It was adopted.
However, the present invention is not limited to this configuration, and a protrusion may be provided as the rotating body side engaging portion, and a guide groove may be provided as the moving body side engaging portion.
Further, guides other than grooves, cams, inclined surfaces, and the like may be used as the rotating body side engaging portion or the moving body side engaging portion. For example, an inclined surface may be provided on at least one of the rotating member 21 or the moving body 3, and the rotating member 21 may be rotated by pressing the rotating member 21 with the moving body 3.
In short, the rotating body side engaging portion and the moving body side engaging portion are members for cooperating to convert the linear motion of the moving body 3 or the like into the rotational motion of the rotating member 21, and the component force in the rotational direction is obtained. Anything that can be generated is sufficient.
Further, another member may be interposed between the moving body 3 and the rotating member 21, and the rotating member 21 may be rotated via the interposed member.

In the embodiment described above, the intermediate flange 12 is provided in the shaft cylinder 2, and the second O-ring is provided between the front surface side of the intermediate flange 12 and one surface (movable side flange surface 41) of the pressing member 23. 27 is provided to ensure the airtightness of the main component built-in portion 92. That is, the intermediate flange 12 provided in the shaft cylinder 2 is a fixed flange, the pressing member 23 is a movable flange, and the second O-ring 27 is sandwiched between them to ensure airtightness.
That is, the member that moves in the axial direction together with the knock cylinder 5 is a movable flange. Other members that move in the axial direction together with the knock cylinder 5 include the rotor 25 and the moving body 3, and the rotor 25 or the moving body 3 may be provided with a movable flange.
Moreover, you may provide a movable side flange in knock cylinder 5 itself. That is, it is also conceivable that the airtightness is ensured between the knock cylinder 5 and the shaft cylinder 2.

That is, as in the embodiment shown in FIG. 22, an inner flange 83 is provided as a fixed flange at the rear end of the shaft tube 2. On the other hand, an outer flange 85 is provided as a movable flange at the open end of the knock cylinder 5 or in the middle. Then, the second O-ring 27 is provided between the outer flange 85 of the knock cylinder 5 and the inner flange 83 of the shaft cylinder 2, and the second O-ring 27 is compressed by a force that causes the knock cylinder 5 to protrude.
The planes of the inner flange 83, the outer flange 85, and the plane of the intermediate flange 12 described above do not necessarily have to be perpendicular to the axis of the applicator 1, and are inclined as shown in FIGS. Also good.
Further, the knock cylinder 5 may be formed by joining a plurality of members as shown in FIG.

  Further, as in the embodiment shown in FIG. 26, an outer flange 86 is provided at the rear end portion of the shaft tube 2. On the other hand, an inner flange 87 is provided at the open end of the knock cylinder 5 or at an intermediate portion, the end of the shaft cylinder 2 is covered with the knock cylinder 5, and the second O-ring 27 is provided between the outer flange 86 and the inner flange 87. It is also possible to compress the second O-ring 27 by a force that causes the knock cylinder 5 to protrude.

In the above-described embodiment, the region of the shaft portion 54 that is inserted into the pen tip mounting portion 43 is closely in contact with the inner peripheral surface of the pen tip mounting portion 43. In addition, it is not necessary that the entire region inserted into the pen tip mounting portion 43 is in close contact with the inner peripheral surface of the pen tip mounting portion 43. For example, only the region of the tip portion of the pen tip mounting portion 43 may be in close contact with the shaft portion 54 and there may be a space between the other portions.
That is, it is only the tip portion of the pen tip mounting portion 43 that protrudes from the shaft cylinder 2 and makes it difficult to see the pen tip application portion 55 during use. It is sufficient if only the portion protruding from the tube 2 is thin. Therefore, it is sufficient that only the region of the tip portion of the pen tip mounting portion 43 is in close contact with the shaft portion 54.

  The embodiments described above are all the retractable marking pens having the knock tube 5 at the rear end of the shaft tube 2, but the retractable type has a knock member on the side surface of the shaft tube 2 and is configured to slide the knock member. The present invention can also be applied to a marking pen.

DESCRIPTION OF SYMBOLS 1 Applicator 2 Shaft cylinder 3 Moving body 5 Knock cylinder 6 Tip opening 7 Pen tip (application part)
8 Shutter member 12 Intermediate flange (fixed side flange)
17 Rotating recess 21 Rotating member (rotating body)
22 Support member 23 Holding member (movable side flange)
25 Rotor 26 First O-ring (seal member)
27 2nd O-ring (seal member)
28 Spring (biasing means)
30 Spherical surface portions 31a, 31b Support leg portions 32a, 32b Rotating shaft 33 Engaging projection 36 Rotating guide groove (rotating body side engaging portion)
37 Recess 43 for turning 43 Pen tip mounting portion 45 Front end support portion 46 Support frame portion 47 Hook-shaped portion 48 Engagement protrusion (moving body side engagement portion)
50 Occlusion body holding part 53 Ink occlusion body 54 Shaft part (lead-out part)
55 Application part 90 Opening part 92 Main component built-in part

Claims (3)

A shaft member having a tip opening; a shutter member that opens and closes the tip opening; a moving body having an application portion at a tip; and a knock member that is attached to the shaft tube so as to be movable in the axial direction. The body is in the shaft cylinder and is movable in the axial direction, and has a biasing means for pressing the knock member toward the rear end side of the shaft cylinder, and moves the knock member against the biasing means. In the applicator that moves the moving body thereby to project the application part from the tip opening of the shaft tube,
The knocking member or the member that moves in the axial direction together with the knocking member has a movable flange, the shaft cylinder has a fixed flange, and the urging force of the urging means urges the movable flange and the fixed flange to approach each other. An applicator characterized in that a seal member is provided between the movable side flange and the fixed side flange.   The rotor has a rotor, and the rotor is in the shaft tube and can be rotated and moved in the axial direction. Between the rotor and the shaft tube or another member, the rotor is moved in the axial direction. An axial movement blocking means for blocking the rotation is provided, a movable flange is provided in the rotor or a member that moves in the axial direction together with the rotor, and a fixed flange is provided in the shaft cylinder. Item 2. The applicator according to Item 1.   The shaft cylinder is provided with a rear end opening, a part of the knock member protrudes from the rear end opening, the knock member is provided with a movable flange, and the rear end opening is provided with a fixed flange. The applicator according to claim 1 or 2.

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