CN105813851B - Ball pen - Google Patents

Abstract

A kind of deflection in nib portion is provided it can be changed according to the application degree of power during writing and do not produced and rocked and the ball pen that stable writing is felt can be obtained；And provide a kind of in order to can significantly change the thickness of setting-out according to the application degree of power during writing, can utilize the ball pen of a different setting-out of writing front end writing both thick and thin according to the angle of ball anterior end of pen.The ball pen has：Write ball (30)；Keeper (21), it keeps writing ball (30) using the gathering portion (23) for forming front end gathering；Black supply unit (40), it supplies ink to keeper (21)；Bar main body (11), black supply unit (40) is accommodated with inside it；And front bar (12), the front end of itself and bar main body (11) is conjointly set, and keeper (21) is prominent from the front bar (12) in writing, the first half (15) to be combined with zigzag intercalation of front bar (12) and latter half of (16) are molded by two colors to be formed.

Description

ballpoint pen

technical field

The invention relates to a ballpoint pen capable of changing the width of a drawn line.

Background technique

In the past, as a technology related to a ballpoint pen capable of inclining the front end of a ballpoint pen, as shown in Patent Document 1, it is known that an elastic body is interposed between the barrel main body and the tip member, and the elastic body is moved by force during writing. flex, thereby tilting the tip of the ballpoint pen.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2002-331789

Contents of the invention

The problem to be solved by the invention

However, in the invention described in the above-mentioned Patent Document 1, there are problems in that the amount of deflection at the tip of the ballpoint pen is limited by the gap between the barrel main body and the pen point member, and the deterioration of elastic bodies such as rubber and artificial rubber causes rattling and writing. change of feeling.

Therefore, a first object of the present invention is to provide a ballpoint pen in which the amount of deflection of the pen tip can be changed according to the degree of application of force during writing, and a stable writing feeling can be obtained without causing vibration.

Also, a second object is to provide a ballpoint pen capable of writing lines of different thicknesses with one writing tip depending on the angle of the tip of the ballpoint pen so that the thickness of the drawn line can be significantly changed according to the degree of force applied during writing. .

solutions to problems

This invention was made in order to solve the said subject, and is characterized by the following. In addition, reference numerals represent reference numerals used in the embodiments of the invention, and are not intended to limit the scope of the present invention.

(the first technical solution and the second technical solution)

The first technical solution of the present invention is a ball-point pen, which is characterized in that the ball-point pen has: a writing ball 30; a holder 21 for holding the writing ball 30 by using a gathering portion 23 formed by folding its front end; 21 ink supply unit 40 for supplying ink; lever main body 11 housing ink supply unit 40 inside; and front lever 12 provided continuously to the front end of lever main body 11 and holder 21 protruding from this lever main body 11 during writing , The front rod 12 has an elastic effect. In addition, a second aspect of the present invention is characterized in that, in the first aspect, the front half 15 and the rear half 16 of the front bar 12 interleaved in a zigzag shape are formed by two-color molding.

The rod main body 11 may have a structure capable of directly storing ink inside, or may have a structure containing a pen core filled with ink inside. The ink supply unit 40 may be a member that supplies the ink stored in the rod body 11 to the holder 21 by using an intermediate member such as a collector 41, or may be an ink storage tube that stores a pen core or the like independently of the rod body 11. A component supplied to the holder 21.

The front end side of the holder 21 is exposed from the front stem 12 during writing, and the rear end side is located inside the front stem 12 and communicates with the ink supply part 40 . A ball chamber (not shown) is formed inside the front end of the holder 21 , and the writing ball 30 is held in the ball chamber. The holder 21 can be formed by cutting or injection molding a metal material such as stainless steel or a resin material such as polyacetal.

According to the present invention, according to the degree of application of force during writing, the two-color molded parts combined in the zigzag shape are deflected, so that a writing feeling like a fountain pen can be obtained. In addition, with regard to the structure of the ballpoint pen tip 20 and the outer member 60, depending on the angle of the tip of the ballpoint pen, it is possible to write lines of different thicknesses with one writing tip. Therefore, by finely adjusting the angle of the tip of the ballpoint pen relative to the writing surface according to the degree of force applied during writing, the thickness of the drawn line can be significantly changed, and the expressiveness of the handwriting can also be improved.

In addition, the two-color molding referred to here refers to the method of integrally molding two or more parts, and also includes the method of forming by molding of the same material and multiple molding in which parts are not bonded to each other.

(Third Technical Solution)

A third aspect of the present invention is characterized in that the two-color molding of the second aspect is applied to the joint 50 . That is, the front rod 12 is composed of a joint 50 fixed to the rod main body 11 and an outer member 60 fixed to the joint 50 and covering the outer periphery of the holder 21. The half 16 is formed by two-color molding.

According to the present invention, like the second technical solution, the angle of the writing front end relative to the writing surface can be fine-tuned according to the degree of force applied during writing, so the thickness of the drawn line can be significantly changed, and the performance of the handwriting can also be improved. Power up.

(Fourth Technical Solution)

A fourth technical means of the present invention is characterized in that, in the third technical means, the joint 50 is integrally formed with the outer member 60 .

According to the present invention, like the second technical solution, the angle of the writing front end relative to the writing surface can be fine-tuned according to the degree of force applied during writing, so the thickness of the drawn line can be significantly changed, and the performance of the handwriting can also be improved. Power up.

(fifth technical solution)

A fifth technical solution of the present invention is characterized in that, in the third technical solution, the joint 50 is integrally formed with the rod main body 11 .

According to the present invention, like the second technical solution, the angle of the writing front end relative to the writing surface can be fine-tuned according to the degree of force applied during writing, so the thickness of the drawn line can be significantly changed, and the performance of the handwriting can also be improved. Power up.

(Sixth technical plan)

A sixth aspect of the present invention is characterized in that, in addition to the above-mentioned features, an internal joint 14 is provided between the ink supply portion 40 and the holder 21 .

The holder 21 may be directly connected to the ink supply part 40, but providing the internal joint 14 is particularly effective when the diameter difference between the holder 21 and the ink supply part 40 is large.

The effect of the invention

The present invention is constituted as above, and therefore, the two-color molded part combined with zigzag interfitting can be bent according to the degree of application of force during writing, and a writing feeling like a fountain pen can be obtained.

In addition, depending on the angle of the tip of the ballpoint pen, it is possible to write lines of different thicknesses with one writing tip. Therefore, by finely adjusting the angle of the tip of the ballpoint pen relative to the writing surface according to the degree of force applied during writing, the thickness of the drawn line can be changed, so it is possible to write "dot", "hook", "skim" easily and with high quality. ", can also improve the expressiveness of handwriting.

Description of drawings

1(A) is a front view of the ballpoint pen according to the first embodiment of the present invention, and FIG. 1(B) is a longitudinal sectional view of the ballpoint pen according to the first embodiment of the present invention.

Fig. 2 is a longitudinal sectional view of the tip of the ballpoint pen according to the first embodiment.

3(A) is a perspective view of the joint used in the ballpoint pen of the first embodiment, and FIG. 3(B) is a longitudinal sectional view of the joint used in the ballpoint pen of the first embodiment.

Fig. 4 is a perspective view of the front shaft of the ballpoint pen according to the first embodiment.

5(A) is a front view of a ballpoint pen according to a second embodiment of the present invention, and FIG. 5(B) is a longitudinal sectional view of the ballpoint pen according to the second embodiment of the present invention.

6 is a vertical cross-sectional view of a tip portion of a ballpoint pen according to a second embodiment.

(A) of FIG. 7 is a perspective view of the rear half of the joint and the outer member used in the ballpoint pen of the second embodiment, and (B) of FIG. 7 is a perspective view of the rear half of the joint and the outer member used in the ballpoint pen of the second embodiment. Longitudinal view.

8(A) is a perspective view of a joint and an outer member used in the ballpoint pen of the second embodiment, and FIG. 8(B) is a longitudinal sectional view of the joint and the outer member used in the ballpoint pen of the second embodiment.

9 is a perspective view of a front shaft of a ballpoint pen according to a second embodiment.

10(A) is a front view of a ballpoint pen according to a third embodiment of the present invention, and FIG. 10(B) is a longitudinal sectional view of the ballpoint pen according to the third embodiment of the present invention.

Fig. 11 is a longitudinal sectional view of a tip portion of a ballpoint pen according to a third embodiment.

Fig. 12 is a longitudinal sectional view of a rod main body and a joint used in a ballpoint pen according to a third embodiment.

Fig. 13 is a perspective view of a front shaft of a ballpoint pen according to a third embodiment.

14(A) is a front view of a ballpoint pen according to a fourth embodiment of the present invention, and FIG. 14(B) is a longitudinal sectional view of the ballpoint pen according to a fourth embodiment of the present invention.

Fig. 15 is a longitudinal sectional view of a tip portion of a ballpoint pen according to a fourth embodiment.

16(A) is a perspective view of an outer member used in the ballpoint pen of the fourth embodiment, and FIG. 16(B) is a longitudinal sectional view of the outer member used in the ballpoint pen of the fourth embodiment.

Fig. 17 is a perspective view of a front shaft of a ballpoint pen according to a fourth embodiment.

18(A) is a front view of a ballpoint pen according to a fifth embodiment of the present invention, and FIG. 18(B) is a longitudinal sectional view of the ballpoint pen according to the fifth embodiment of the present invention.

Fig. 19 is a longitudinal sectional view of a tip portion of a ballpoint pen according to a fifth embodiment.

20(A) is a perspective view of a joint used in the ballpoint pen of the fifth embodiment, and FIG. 20(B) is a longitudinal sectional view of the joint used in the ballpoint pen of the fifth embodiment.

Fig. 21 is a perspective view of a front shaft of a ballpoint pen according to a fifth embodiment.

22(A) is a front view of a ballpoint pen according to a sixth embodiment of the present invention, and FIG. 22(B) is a longitudinal sectional view of the ballpoint pen according to the sixth embodiment of the present invention.

Fig. 23 is a longitudinal sectional view of a tip portion of a ballpoint pen according to a sixth embodiment.

24(A) is a front perspective view of the rod body used in the ballpoint pen of the sixth embodiment, and FIG. 24(B) is a front longitudinal sectional view of the rod body used in the ballpoint pen of the sixth embodiment.

25(A) is a perspective view of a joint used in a ballpoint pen according to a sixth embodiment, and FIG. 25(B) is a longitudinal sectional view of a joint used in a ballpoint pen according to a sixth embodiment.

Fig. 26 is a perspective view of a front shaft of a ballpoint pen according to a sixth embodiment.

Fig. 27 shows characters written with the ballpoint pen of the present invention and characters written with a conventional writing instrument.

detailed description

Hereinafter, embodiments of the present invention will be described by dividing them into first to sixth embodiments with reference to the drawings. In addition, in this specification, the "front" of the ballpoint pen 1 and its components refers to the front end side when the writing ball 30 is used as the front end of the ballpoint pen 1, and the "rear" refers to the side opposite to the front end side. .

(first embodiment)

The appearance of the ballpoint pen 1 according to the first embodiment of the present invention is shown in (A) of FIG. 1 . As shown in FIG. 1(B) and FIG. 2 , the ballpoint pen 1 has: a ballpoint pen tip 20 having a writing ball 30 and a holder 21 for holding the writing ball 30 by means of a gathered portion 23 formed by gathering the front end; The ink supply unit 40 supplies ink to the holder 21 of the ballpoint pen tip 20 , and the barrel 10 accommodates the ink supply unit 40 therein.

As shown in FIG. 1(B) , the rod barrel 10 is composed of a rod main body 11 having an ink storage portion 13 and a front rod 12 provided at the front end of the rod main body 11 . The front lever 12 is composed of a joint 50 fixed to the front end portion of the lever main body 11 and an outer member 60 fixed to the joint 50 . In addition, an internal joint 14 that connects the ink supply unit 40 and the ballpoint pen tip 20 is built inside the front shaft 12 . In addition, ink not shown is filled in the above-mentioned ink container 13 .

As shown in FIG. 1(B), the ink supply part 40 has: a substantially cylindrical collector 41 formed with a plurality of fins on its outer periphery; and a front end block (Japanese: 头头コマ) 44 made of a rubber elastic material mounted on the front end of the front end holding portion 42 . The rear end portion of the collector 41 is in contact with the ink storage portion 13 . As shown in FIG. 2 , the front-end holding part 42 is fitted into the rear of the front-end block 44 , and the inner joint 14 is fitted into the front of the front-end block 44 . The collector core 43 is formed of a rod-shaped polyester fiber, the rear end side of the collector core 43 protrudes into the ink container 13 (refer to FIG. 1(B)), and the central part of the collector core 43 penetrates the collector along the axial direction. 41. The front-end holding part 42 and the front-end block 44 , the front-end side of the collector core 43 is inserted from the rear end of the inner joint 14 to approximately half of the inner joint 14 .

As shown in FIG. 2 , the ballpoint pen point 20 has a cylindrical holder 21 and a writing ball 30 held by the holder 21 . A substantially conical tapered portion 22 tapered toward the distal end is formed on the front end side of the holder 21 , and a gathered portion 23 formed by pressing the small opening of the tapered portion 22 inwardly to shrink in diameter is formed. Furthermore, the front end of the writing ball 30 held inside the tapered portion 22 is exposed from the front end edge of the gathered portion 23 . The holder 21 can be formed by processing a metal pipe such as stainless steel or a resin pipe such as polyacetal. In addition, a rod-shaped core 25 protruding from the rear end portion of the holder 21 is inserted into the inside of the holder 21 . The central core 25 is formed of polyester fiber the same as the collector core 43, the rear end of the central core 25 is embedded in the front end of the collector core 43, and the front end of the central core 25 reaches the direct rear of the writing ball 30, and the central core 25 has absorbed the The ink penetrates to the collector core 43 and supplies the ink to the writing ball 30 . Furthermore, the ballpoint pen tip 20 is held by the inner joint 14 in a state of being fitted into the inner joint 14 by about 2/3 from the rear end side.

In addition, the collector core 43 and the center core 25 are formed by selecting an appropriate porosity and surface shape of the polyester fiber according to properties such as the viscosity of the ink used.

The joint 50 is made of synthetic resin and is composed of a cylindrical joint fixing portion 51 and a substantially conical joint taper 52 provided continuously to the joint fixing portion 51 . In addition, in the joint 50, a hole is formed from the rear end toward the front end, the rear insertion hole 53 is provided on the inner surface of the joint fixing part 51, and the rear insertion hole 53 is provided on the inner surface near the center of the joint taper part 52. A central insertion hole 54 with a small diameter is provided on the inner surface near the front end of the taper portion 52 of the joint, and a front insertion hole 55 having a diameter approximately the same as that of the central insertion hole 54 is provided.

In addition, the joint 50 is a part formed by secondary molding. As shown in (A) and (B) of FIG. The joints 50 are formed by combining them together. Here, the rear half 16 is composed of a part from the rear end of the joint fixing part 51 to about 1/3 of the rear side of the front insertion hole 55, and an outer periphery from the front end of this part to the substantially center of the joint taper part 52. The rear semi-recesses 16b arranged equidistantly on the eight parts of the body constitute. Moreover, the rear-half protrusion part 16a is formed between adjacent rear-half recessed parts 16b. The front half 15 is composed of an annular portion 15b and a front half protruding portion 15a, wherein the annular portion 15b is a portion from the front end of the joint taper 52 to about 2/3 of the front side of the front insertion hole 55, and the front half protruding portion 15a is formed from The annular portion 15b extends rearward and is formed corresponding to the rear half recessed portion 16b. Furthermore, the front half 15 and the rear half 16 are integrated by joining the rear half protrusion 16a and the front half protrusion 15a accommodated in the rear half recess 16b so as to be interlocked and combined in a staggered manner.

In order to obtain flexure, thermoplastic elastomer is preferably used for the front half 15 as the secondary molded body, but it may be the same material as that of the rear half 16 as the primary molded body.

As shown in FIG. 1(B) and FIG. 2 , the ink supply unit 40 and the internal joint 14 fitted into the ink supply unit 40 are inserted into the joint 50 from behind. At this time, the front end block 44 is fitted into the rear insertion hole 53 , and the inner joint 14 is inserted into the central insertion hole 54 . Furthermore, the joint 50 is fixed to the rod main body 11 by fitting the joint fixing part 51 into the inner surface near the front end of the rod main body 11 .

As shown in FIG. 2 , the outer member 60 is made of synthetic resin and is composed of a cylindrical outer fixing portion 61 and a substantially conical outer tapered portion 62 provided continuously to the outer fixing portion 61 . A chamfered outer front end portion 66 is provided at the front end of the outer tapered portion 62 . In addition, in the outer member 60, holes are formed from the rear end toward the front end, and a rear insertion hole 63 is provided on the inner surface of the outer fixing part 61, and a rear insertion hole 63 is provided on the inner surface near the front end of the outer tapered part 62. The small-diameter front portion of the hole 63 is inserted into the hole 64 . The outer fixing portion 61 is fixed to the joint 50 by fitting the outer fixing portion 61 into the front insertion hole 55 of the joint 50 . Also, the outer member 60 covers the ballpoint pen tip 20 . At this time, the front end portion of the inner joint 14 is inserted into the rear insertion hole 63 , and the ballpoint pen tip 20 protruding from the inner joint 14 is fitted into the front insertion hole 64 . As shown in FIG. 4 , it is configured such that only the writing ball 30 , the gathered portion 23 covering the writing ball 30 and the outer front end 66 are exposed near the front end of the outer member 60 , and the writing ball 30 and the outer front end 66 are simultaneously exposed. When contacting the writing surface, a space is generated in the portion surrounded by the writing surface, the writing ball 30 , the gathered portion 23 and the outer front end portion 66 .

This ballpoint pen 1 has a structure in which the vicinity of the joining portion between the front half 15 and the rear half 16 is deformed, and the joint 50 is easy to bend. Therefore, the outer member 60 can be moved from the rod main body 11 according to the degree of force applied during writing. The central axis is inclined. Therefore, a writing feeling like a fountain pen can be obtained.

In addition, as long as the writing ball 30 and the outer front end portion 66 are brought into contact with the writing surface by inclining the outer member 60 from the center axis of the rod main body 11, the ink adhering to the surface of the writing ball 30 will move along with the writing ball. 30 rotation, the ink flowing out of the bead chamber not shown is diffused into the space surrounded by the writing surface, the writing bead 30 , the gathered part 23 and the outer front end part 66 due to the capillary phenomenon. Therefore, thicker lines than those drawn by the writing ball 30 can be drawn. That is, the angle of the writing tip with respect to the writing surface can be finely adjusted by bending the joint 50 , so the thickness of the drawn line can be changed.

(second embodiment)

The appearance of the ballpoint pen 1 according to the second embodiment of the present invention is shown in (A) of FIG. 5 . The second embodiment is a ballpoint pen in which a joint 50 and an outer member 60 are integrally formed. In addition, although the structure of the front lever 12 of 2nd Embodiment differs from 1st Embodiment, other structures are the same as 1st Embodiment, Therefore Only a different point is demonstrated.

The joint 50 and the outer member 60 are made of synthetic resin. As shown in Figure 6, the joint 50 is composed of a cylindrical joint fixing part 51 and a conical joint cone 52 connected to the joint fixing part 51, and the outer part 60 is composed of an outer cone 62, wherein the outer cone 62 is connected to the joint taper portion 52 , and the outer taper portion 62 has a substantially conical shape with a larger taper angle relative to the joint taper portion 52 . In addition, in the joint 50, holes are formed from the rear end toward the front end, the rear insertion hole 53 is provided on the inner surface of the joint fixing part 51, and the rear insertion hole 53 is provided on the inner surface near the front end of the joint taper part 52. The central insertion hole 54 of small diameter. The outer member 60 is formed with a hole continuous from the joint 50, and the inner surface near the rear end of the outer tapered portion 62 is provided with a rear insertion hole 63 having a diameter smaller than that of the central insertion hole 54, and near the front end of the outer tapered portion 62. The inner surface is provided with a front insertion hole 64 having a diameter smaller than that of the rear insertion hole 63 . A chamfered outer front end portion 66 is provided at the front end portion of the outer tapered portion 62 .

Furthermore, the joint 50 and the outer member 60 are members formed by secondary molding, and are formed by combining the rear half 16 as a primary molding and the front half 15 as a secondary molding in a zigzag shape. Here, as shown in (A) and (B) of FIG. Approximately half of the position extends toward the front end of the joint taper portion 52 and is arranged at three positions equally with respect to the axis, and the annular ring portion 16c is formed at the front end of the rear half protrusion 16a. . As shown in (A) and (B) of FIG. 8 , the front half 15 extends from the outer tapered portion 62 from the vicinity of the rear end of the outer tapered portion 62 toward approximately half of the joint tapered portion 52 and is equally spaced relative to the axis. The front half protruding part 15a arrange|positioned in three places is comprised. Furthermore, the front half part 15 and the rear half part 16 are integrated by joining the rear half protrusion part 16a and the front half protrusion part 15a so that they may be interleaved and combined. In addition, since the ring part 16c is put in the front half part 15, even if the front half part 15 and the rear half part 16 are formed by two-color molding without bonding, the rear half part 16 will not fall off from the front half part 15.

In addition, even if the front half 15 as the secondary molded body is molded from the same material as that of the rear half 16 as the primary molded body, flexure can be obtained.

As shown in FIG. 5(B) and FIG. 6 , the ink supply unit 40 and the internal joint 14 fitted into the ink supply unit 40 are inserted into the joint 50 from behind. At this time, the front end block 44 is fitted into the rear insertion hole 53 , the inner joint 14 is inserted into the center insertion hole 54 and the rear insertion hole 63 , and the ballpoint pen tip 20 protruding from the inner joint 14 is fitted into the front insertion hole 64 . Furthermore, the joint 50 is fixed to the rod main body 11 by fitting the joint fixing part 51 into the inner surface near the front end of the rod main body 11 .

On the other hand, the front end portion of the outer member 60 covers the ballpoint pen tip 20 . And, as shown in FIG. 9 , it is configured such that, near the front end of the outer member 60, only the writing ball 30, the gathered portion 23 covering the writing ball 30, and the outer front end 66 are exposed, and the writing ball 30 and the outer front end 66 are exposed. When 66 abuts against the writing surface at the same time, a space is created in the part surrounded by the writing surface, the writing ball 30 , the gathered portion 23 and the outer front end portion 66 .

This ballpoint pen 1 has a structure in which the vicinity of the junction between the front half 15 and the rear half 16 is deformed, and the integrally formed joint 50 and outer member 60 are easily deflected. The front half 15 is inclined from the central axis of the rod main body 11 . Therefore, a writing feeling like a fountain pen can be obtained.

In addition, as long as the writing ball 30 and the outer front end portion 66 are brought into contact with the writing surface by inclining the outer member 60 from the center axis of the rod main body 11, the ink adhering to the surface of the writing ball 30 will move along with the writing ball. The ink flowing out of the bead chamber not shown by the rotation of 30 is diffused into the space surrounded by the writing surface, the writing bead 30 , the gathered portion 23 and the outer front end portion 66 due to the capillary phenomenon. Therefore, thicker lines than those drawn by the writing ball 30 can be drawn. That is, the angle of the writing tip with respect to the writing surface can be finely adjusted by bending the joint 50 , so the thickness of the drawn line can be changed.

(third embodiment)

The appearance of the ballpoint pen 1 according to the third embodiment of the present invention is shown in FIG. 10(A). The third embodiment is a ballpoint pen in which a joint 50 and a rod body 11 are integrally formed. In addition, although the structure of the front lever 12 of 3rd Embodiment differs from 1st Embodiment, other structures are the same as 1st Embodiment, Therefore Only a different point is demonstrated.

As shown in FIG. 11 , the joint 50 and the shaft main body 11 are components made of synthetic resin, and the shaft taper 17 formed on the front end portion of the shaft main body 11 and the shaft taper 17 are connected to and relatively to the shaft. The taper portion 17 is constituted by a substantially conical joint taper portion 52 having a large taper angle. A central insertion hole 54 is formed on the inner surface of the joint taper portion 52 .

In addition, the joint 50 and the rod main body 11 are parts formed by secondary molding. As shown in FIGS. formed by combining. Here, the rear half 16 is composed of a rear part of the rod main body 11 from the rod taper 17, a cylindrical connecting portion 16d provided continuously to the front end of the rod taper 17, and The rear half recessed part 16b is equally arrange|positioned in four places of the outer peripheral part from the front-end|tip of the part 17 to about 1/5 of the front side of the rod main body 11. Moreover, the space between adjacent rear half recessed parts 16b becomes the rear half protrusion part 16a. The front half part 15 is comprised from the joint taper part 52, and the front half protrusion part 15a extended rearward from the rear end of the joint taper part 52, and formed so that it may correspond to the rear half recessed part 16b. Furthermore, the front half 15 and the rear half 16 are integrated by joining the rear half protrusion 16a and the front half protrusion 15a accommodated in the rear half recess 16b so as to be interlocked and combined in a staggered manner.

In addition, in order to obtain flexure, it is preferable to use a rubber elastic material such as thermoplastic elastomer for the first half 15 of the secondary molded body, but even if it is the same material as the second half 16 of the primary molded body, as long as the hardness is low The material can also be used.

As shown in FIG. 10(B) and FIG. 11 , the ink supply unit 40 and the internal joint 14 fitted into the ink supply unit 40 are inserted into the joint 50 from behind. At this time, the inner joint 14 is inserted into the central insertion hole 54 .

As shown in FIG. 11 , the outer member 60 is made of synthetic resin and is composed of a cylindrical outer fixing portion 61 and a substantially conical outer tapered portion 62 provided continuously to the outer fixing portion 61 . A chamfered outer front end portion 66 is provided at the front end of the outer tapered portion 62 . In addition, in the outer member 60, a hole is formed from the rear end toward the front end, the rear insertion hole 63 is provided on the inner surface of the outer fixing part 61, and the rear insertion hole 63 is provided on the inner surface near the front end of the outer tapered part 62. The small diameter front portion of 63 is inserted into hole 64 . The outer fixing part 61 is fixed to the joint 50 by fitting the outer fixing part 61 into the central insertion hole 54 of the joint 50 . Also, the outer member 60 covers the ballpoint pen tip 20 . At this time, the front end of the inner joint 14 is inserted into the rear insertion hole 63 , and the ballpoint pen tip 20 protruding from the inner joint 14 is fitted into the front insertion hole 64 . As shown in FIG. 13 , it is configured such that only the writing ball 30 , the gathered portion 23 covering the writing ball 30 and the outer front end portion 66 are exposed near the front end of the outer member 60 , and the writing ball 30 and the outer front end portion 66 are exposed. When contacting the writing surface at the same time, a space is generated in the portion surrounded by the writing surface, the writing ball 30 , the gathered portion 23 and the outer front end portion 66 .

This ballpoint pen 1 has a structure in which the vicinity of the junction between the front half 15 and the rear half 16 is deformed, and the front of the rod main body 11 and the joint 50 are easy to bend. The member 60 is inclined from the central axis of the rod body 11 . Therefore, a writing feeling like a fountain pen can be obtained.

In addition, as long as the writing ball 30 and the outer front end portion 66 are brought into contact with the writing surface by inclining the outer member 60 from the center axis of the rod main body 11, the ink adhering to the surface of the writing ball 30 will move along with the writing ball. The rotation of 30, the ink flowing out of the unillustrated ball chamber is diffused to the space surrounded by the writing surface, the writing ball 30, the gathering part 23 and the outer front end 66 due to the capillary phenomenon, therefore, it can be drawn more than the space enclosed by the outer front end part 66. The line drawn by the writing bead 30 is a thick line. That is, the angle of the writing tip with respect to the writing surface can be finely adjusted by bending the joint 50 , so the thickness of the drawn line can be changed.

(fourth embodiment)

The appearance of the ballpoint pen 1 according to the fourth embodiment of the present invention is shown in (A) of FIG. 14 . As shown in (B) of FIG. 14 and FIG. 15 , the ballpoint pen 1 has: a ballpoint pen tip 20 having a writing ball 30 and a holder 21 for holding the writing ball 30 by means of a gathered portion 23 formed by gathering the front end; The ink supply unit 40 supplies ink to the holder 21 of the ballpoint pen tip 20 , and the barrel 10 accommodates the ink supply unit 40 therein.

As shown in (B) of FIG. 14 , the rod barrel 10 is composed of a rod main body 11 having an ink storage portion 13 and a front rod 12 provided at the front end of the rod main body 11 . The front lever 12 is composed of a joint 50 fixed to the front end portion of the lever main body 11 and an outer member 60 fixed to the joint 50 . In addition, an internal joint 14 that connects the ink supply unit 40 and the ballpoint pen tip 20 is built inside the front shaft 12 . In addition, the above-mentioned ink container 13 is filled with ink not shown in the figure.

As shown in FIG. 14(B), the ink supply unit 40 has: a substantially cylindrical collector 41 having a plurality of fins formed on its outer periphery; and a front end block 44 made of a rubber elastic material attached to the front end of the front end holding portion 42 . The rear end portion of the collector 41 is in contact with the ink storage portion 13 . As shown in FIG. 15 , the front-end holding part 42 is fitted into the rear of the front-end block 44 , and the inner joint 14 is fitted into the front of the front-end block 44 . The collector core 43 is formed of a rod-shaped polyester fiber, the rear end side of the collector core 43 protrudes into the ink container 13 (refer to FIG. 14(B)), and the central part of the collector core 43 penetrates the collector along the axial direction. 41. The front-end holding part 42 and the front-end block 44 , the front-end side of the collector core 43 is inserted from the rear end of the inner joint 14 to approximately half of the inner joint 14 .

As shown in FIG. 15 , the ballpoint pen point 20 has a cylindrical holder 21 and a writing ball 30 held by the holder 21 . A substantially conical tapered portion 22 tapered toward the distal end is formed on the front end side of the holder 21 , and a gathered portion 23 formed by pressing the small opening of the tapered portion 22 inwardly to shrink in diameter is formed. Furthermore, the front end of the writing ball 30 held inside the tapered portion 22 is exposed from the front end edge of the gathered portion 23 . The holder 21 can be formed by processing a metal pipe such as stainless steel or a resin pipe such as polyacetal. In addition, a rod-shaped core 25 protruding from the rear end portion of the holder 21 is inserted into the inside of the holder 21 . The central core 25 is formed of polyester fiber the same as the collector core 43, the rear end of the central core 25 is embedded in the front end of the collector core 43, and the front end of the central core 25 reaches directly behind the writing ball 30, and the central core 25 absorbs The ink that has penetrated the collector core 43 and supplies the ink to the writing ball 30 . Furthermore, the ballpoint pen tip 20 is held by the inner joint 14 in a state of being fitted into the inner joint 14 by about 2/3 from the rear end side.

In addition, the collector core 43 and the center core 25 are formed by selecting an appropriate porosity and surface shape of the polyester fiber according to properties such as the viscosity of the ink used.

The joint 50 is made of synthetic resin and is composed of a cylindrical joint fixing portion 51 and a substantially conical joint taper 52 provided continuously to the joint fixing portion 51 . In addition, as shown in FIG. 15 , in the joint 50, a hole is formed from the rear end toward the front end, a rear insertion hole 53 is provided on the inner surface of the joint fixing part 51, and a rear insertion hole 53 is provided on the inner surface near the center of the joint taper part 52. The central insertion hole 54 having a smaller diameter than the rear insertion hole 53 has a front insertion hole 55 having approximately the same diameter as the central insertion hole 54 on the inner surface near the front end of the taper portion 52 . Furthermore, as shown in FIG. 17 , the openings 56 are equally arranged at three locations on the front end edge of the joint 50 .

As shown in FIG. 14(B) and FIG. 15 , the ink supply unit 40 and the internal joint 14 fitted into the ink supply unit 40 are inserted into the joint 50 from behind. At this time, the front end block 44 is fitted into the rear insertion hole 53 , and the inner joint 14 is inserted into the center insertion hole 54 . Furthermore, the joint 50 is fixed to the rod main body 11 by fitting the joint fixing part 51 into the inner surface near the front end of the rod main body 11 .

As shown in FIGS. 15 and 16 (A) and (B), the outer member 60 is made of synthetic resin, and consists of a cylindrical outer fixing portion 61 and a position closer to the front end than the outer fixing portion 61. And it is comprised with the exposure part 60a of the substantially conical shape which can be visually recognized from a housing|casing. The front end side of the exposed portion 60a is formed as an outer tapered portion 62, and a chamfered outer front end portion 66 is provided at the front end of the exposed portion 60a on the front end side. In addition, on the rear end side of the exposed portion 60a, in the range from the rear end of the outer tapered portion 62 to the front end of the outer fixing portion 61, three protrusions protruding outward are equally arranged radially with respect to the axis. 65. As shown in FIG. 17 , the protrusions 65 are inserted into the corresponding openings 56 of the joint 50 . In addition, at about 1/3 of the rear end side of the outer tapered portion 62 and between the projections 65 , slits 19 are formed radially at two locations, a total of six locations, with respect to the axis. Moreover, in the outer member 60, a hole is formed from the rear end toward the front end, and the rear insertion hole 63 is provided on the inner surface of the outer fixing part 61, and the rear insertion hole 63 is provided on the inner surface near the front end of the outer tapered part 62. The small diameter front portion of 63 is inserted into hole 64 . The outer fixing portion 61 is fixed to the joint 50 by fitting the outer fixing portion 61 into the front insertion hole 55 of the joint 50 . Also, the outer member 60 covers the ballpoint pen tip 20 . At this time, the front end portion of the inner joint 14 is inserted into the rear insertion hole 63 , and the ballpoint pen tip 20 protruding from the inner joint 14 is fitted into the front insertion hole 64 . As shown in FIG. 17 , it is configured such that only the writing ball 30 , the gathering portion 23 covering the writing ball 30 and the outer front end 66 are exposed near the front end of the outer member 60 , and the writing ball 30 and the outer front end 66 are exposed. When contacting the writing surface at the same time, a space is generated in the portion surrounded by the writing surface, the writing ball 30 , the gathered portion 23 and the outer front end portion 66 .

Since the ballpoint pen 1 has a structure that is easy to bend near the slit 19, the front end portion of the outer member 60 can be inclined from the central axis of the rod body 11 according to the degree of force applied during writing. Therefore, a writing feeling like a fountain pen can be obtained.

In addition, as long as the writing ball 30 and the outer front end portion 66 are brought into contact with the writing surface by inclining the front end portion of the outer member 60 from the center axis of the rod main body 11, the ink adhering to the surface of the writing ball 30 is When the writing ball 30 rotates, the ink flowing out of the ball chamber (not shown) is diffused into the space surrounded by the writing surface, the writing ball 30 , the gathered portion 23 and the outer front end portion 66 due to capillary phenomenon. Therefore, thicker lines than those drawn by the writing ball 30 can be drawn. That is, the angle of the writing tip relative to the writing surface can be finely adjusted by deflection in the vicinity of the slit 19, so the thickness of the drawn line can be changed.

Then, according to the degree of force applied to the writing tip, the vicinity of the slit 19 bends, whereby the protrusion 65 on the outer peripheral surface moves in the direction of bending in the opening 56 inserted therein. Therefore, for the user of the ballpoint pen 1, the movement of the protrusion 65 visualizes the deflection near the slit 19 .

(fifth embodiment)

The appearance of the ballpoint pen 1 according to the fifth embodiment of the present invention is shown in (A) of FIG. 18 . The fifth embodiment is a ballpoint pen in which a slit 19 is provided at a joint 50 of a front rod 12 . In addition, the configuration of the front lever 12 of the fifth embodiment is different from that of the fourth embodiment, but the other configurations are the same as those of the fourth embodiment, so only the different points will be described.

As shown in FIG. 19 , the joint 50 is made of synthetic resin and is composed of a cylindrical joint fixing portion 51 and a substantially conical joint taper 52 provided continuously to the joint fixing portion 51 . In addition, in the joint 50, a hole is formed from the rear end toward the front end, the rear insertion hole 53 is provided on the inner surface of the joint fixing part 51, and the rear insertion hole 53 is provided with a diameter ratio rear insertion hole 53 on the inner surface near the center of the joint taper part 52. A central insertion hole 54 with a small diameter is provided on the inner surface near the front end of the joint tapered portion 52 with a front insertion hole 55 formed by slightly reducing the diameter of the central insertion hole 54 . Moreover, as shown in (A) and (B) of FIG. 20 and FIG. 21 , in the range from the front end of the joint 50 to the vicinity of the center of the joint taper 52 , nine joints are equally arranged radially with respect to the axis. Slit19. In addition, in the vicinity of the central insertion hole 54 , the slit 19 penetrates to the inner surface of the central insertion hole 54 .

As shown in FIG. 18(B) and FIG. 19 , the ink supply unit 40 and the internal joint 14 fitted into the ink supply unit 40 are inserted into the joint 50 from behind. At this time, the front end block 44 is fitted into the rear insertion hole 53 , and the inner joint 14 is inserted into the central insertion hole 54 . Furthermore, the joint 50 is fixed to the rod main body 11 by fitting the joint fixing part 51 into the inner surface near the front end of the rod main body 11 .

As shown in FIGS. 19 and 21 , the outer member 60 is made of synthetic resin and includes a cylindrical outer fixing portion 61 and a substantially conical outer tapered portion 62 provided continuously to the outer fixing portion 61 . A chamfered outer front end portion 66 is provided at the front end of the outer tapered portion 62 . In addition, in the outer member 60, holes are formed from the rear end toward the front end, the rear insertion hole 63 is provided on the inner surface of the outer fixing part 61, and the rear insertion hole 63 is provided on the inner surface near the front end of the outer tapered part 62. The small diameter front portion of 63 is inserted into hole 64 . The outer fixing part 61 is fixed to the joint 50 by fitting the outer fixing part 61 into the front insertion hole 55 of the joint 50 . Also, the outer member 60 covers the ballpoint pen tip 20 . At this time, the front end of the inner joint 14 is inserted into the rear insertion hole 63 , and the ballpoint pen tip 20 protruding from the inner joint 14 is fitted into the front insertion hole 64 . As shown in FIG. 21 , it is configured such that only the writing bead 30 , the gathered portion 23 covering the writing bead 30 and the outer front end 66 are exposed near the front end of the outer member 60 , and the writing bead 30 and the outer front end 66 are exposed at the same time. When contacting the writing surface, a space is generated in the portion surrounded by the writing surface, the writing ball 30 , the gathered portion 23 and the outer front end portion 66 .

Since the ballpoint pen 1 has a structure in which the vicinity of the slit 19 is easily deflected, the outer member 60 can be inclined from the central axis of the rod body 11 according to the degree of application of force during writing. Therefore, a writing feeling like a fountain pen can be obtained.

In addition, as long as the writing ball 30 and the outer front end portion 66 are brought into contact with the writing surface by inclining the outer member 60 from the center axis of the rod main body 11, the ink adhering to the surface of the writing ball 30 will move along with the writing ball. 30 rotation, the ink flowing out of the unshown bead chamber is diffused into the space surrounded by the writing surface, the writing bead 30 , the gathered portion 23 and the outer front end portion 66 due to the capillary phenomenon. Therefore, thicker lines than those drawn by the writing ball 30 can be drawn. That is, the angle of the writing tip relative to the writing surface can be finely adjusted by deflection in the vicinity of the slit 19, so the thickness of the drawn line can be changed.

(sixth embodiment)

The appearance of the ballpoint pen 1 according to the sixth embodiment of the present invention is shown in (A) of FIG. 22 . The sixth embodiment is a ballpoint pen in which a slit 19 is provided inside a joint 50 of a front rod 12 . In addition, although the structure of the front lever 12 of 6th Embodiment differs from 4th Embodiment, other structures are the same as 4th Embodiment, Therefore Only a different point is demonstrated.

As shown in (A) of FIG. 22 and (A) and (B) of FIG. 24 , in the diameter-reducing portion in front of the rod main body 11, a notch is formed in the portion from the front end to about 2/3 of the diameter-reducing portion. 18.

As shown in (A) and (B) of FIG. 25 , the joint 50 is a synthetic resin component composed of a cylindrical joint barrel portion 52b and a substantially triangular protrusion 57, wherein the protrusion 57 is equally They are arranged at eight places on the outer peripheral surface of the joint cylindrical portion 52b, and protrude in the axial direction so that a part protrudes toward the rear of the joint cylindrical portion 52b. Slits 19 are radially formed from the rear end of the protruding portion 57 to about 1/3 of the rear side of the joint 50 to create a gap between the protruding portion 57 and the joint cylindrical portion 52b. In addition, in the joint 50, a hole is formed toward the front end from the rear end, and a rear insertion hole 53 is provided on the rear inner surface of the joint cylinder part 52b, and a diameter and a rear insertion hole are provided on the front inner surface of the joint cylinder part 52b. 53 has the same diameter as the front insertion hole 55 .

As shown in FIG. 22(B) and FIG. 23 , the internal joint 14 fitted into the ink supply portion 40 is inserted into the joint 50 from behind. And the joint 50 is fixed to the rod main body 11 by fitting the protrusion part 57 in the notch 18 of the rod main body 11. As shown in FIG.

As shown in FIGS. 23 and 26 , the outer member 60 is a synthetic resin member composed of a cylindrical outer fixing portion 61 and a substantially conical outer tapered portion 62 provided continuously to the outer fixing portion 61 . A chamfered outer front end portion 66 is provided at the front end of the outer tapered portion 62 . In addition, in the outer member 60, holes are formed from the rear end toward the front end, the rear insertion hole 63 is provided on the inner surface of the outer fixing part 61, and the rear insertion hole 63 is provided on the inner surface near the front end of the outer tapered part 62. The small diameter front portion of 63 is inserted into hole 64 . The outer fixing part 61 is fixed to the joint 50 by fitting the outer fixing part 61 into the front insertion hole 55 of the joint 50 . Also, the outer member 60 covers the ballpoint pen tip 20 . At this time, the front end portion of the inner joint 14 is inserted into the rear insertion hole 63 , and the ballpoint pen tip 20 protruding from the inner joint 14 is fitted into the front insertion hole 64 . As shown in FIG. 26 , it is configured such that only the writing ball 30 , the gathering portion 23 covering the writing ball 30 and the outer front end 66 are exposed near the front end of the outer member 60 , and the writing ball 30 and the outer front end 66 are simultaneously exposed. When contacting the writing surface, a space is generated in the portion surrounded by the writing surface, the writing ball 30 , the gathered portion 23 and the outer front end portion 66 .

Since this ballpoint pen 1 has a structure in which the protruding portion 57 is easily deflected front, back, left, and right with respect to the shaft center of the shaft main body 11 by using the slit 19, the outer member 60 can be rotated from the shaft main body 11 according to the degree of force applied during writing. The central axis is inclined. Therefore, a writing feeling like a fountain pen can be obtained.

In addition, as long as the writing ball 30 and the outer front end portion 66 are brought into contact with the writing surface by inclining the outer member 60 from the center axis of the rod main body 11, the ink adhering to the surface of the writing ball 30 will move along with the writing ball. 30 rotation, the ink flowing out of the bead chamber not shown is diffused into the space surrounded by the writing surface, the writing bead 30 , the gathered part 23 and the outer front end part 66 due to the capillary phenomenon. Therefore, thicker lines than those drawn by the writing ball 30 can be drawn. That is, the angle of the writing tip relative to the writing surface can be finely adjusted by deflection in the vicinity of the slit 19, so the thickness of the drawn line can be changed.

(comparative example compared with other writing utensils)

FIG. 27 shows handwriting written with a ballpoint pen, a signature pen, a fountain pen, and the ballpoint pen 1 of the present invention. The handwriting written by the ballpoint pen 1 of the present invention can easily and high-qualityly write α "dot", β "hook", and γ "stroke" which are the end of strokes, compared with ballpoint pens, signature pens, and fountain pens.

As described above, in the first embodiment, the second embodiment, and the third embodiment described above, the outer member 60 can be flexed by utilizing the deformation in the vicinity of the joining portion between the front half portion 15 and the rear half portion 16 . In addition, in the above-mentioned fourth embodiment, fifth embodiment and sixth embodiment, the outer member 60 can be bent by using the slit 19, and the writing feeling like a fountain pen can be obtained according to the degree of application of force at the time of writing. .

Also, with the structure of the ballpoint pen tip 20 and the outer member 60, it is possible to write lines of different thicknesses with one writing tip depending on the angle of the tip of the ballpoint pen. Therefore, by finely adjusting the angle of the tip of the ballpoint pen relative to the writing surface according to the degree of force applied during writing, the thickness of the drawn line can be changed and the expressiveness of the handwriting can be improved.

Industrial availability

The present invention can be used for writing utensils such as ballpoint pens.

Claims (5)

1. A ballpoint pen, characterized in that, This ballpoint pen has: writing ball; A holder, which uses the gathering part formed by gathering the front end to keep the above-mentioned writing ball; an ink supply unit that supplies ink to the holder; a rod main body in which the above-mentioned ink supply unit is accommodated; and a front rod, which is provided in connection with the front end of the above-mentioned rod main body, and from which the holder protrudes when writing, The above-mentioned front bar has an elastic effect, The front half and the rear half of the front bar, which are combined in a zigzag shape, are formed by two-color molding. 2. The ballpoint pen according to claim 1, characterized in that, The front rod is composed of a joint fixed to the rod main body and an outer member fixed to the joint and covering the outer periphery of the holder, The front half and the rear half of the above-mentioned joint, which are combined in a zigzag shape, are formed by two-color molding. 3. The ballpoint pen according to claim 2, characterized in that, The above-mentioned joint is integrally formed with the above-mentioned outer part. 4. The ballpoint pen according to claim 2, characterized in that, The joint is integrally formed with the rod body. 5. The ballpoint pen according to any one of claims 1-4, characterized in that, An internal joint is provided between the ink supply unit and the holder.