阅读说明：本技术 书写工具 (Writing implement ) 是由 中岛徹 福本刚生 大野豪也 于 2018-04-17 设计创作，主要内容包括：本发明的目的在于提供一种在笔压的作用下使描线的宽度自由变化的书写工具,该书写工具能够对应细杆的签字笔或细杆的记号笔。书写工具(1)具有：笔杆(10)；墨供给芯(20),其收纳于所述笔杆(10)的内部,利用毛细管力引导墨；以及芯周围构件(30),其安装于所述笔杆10的顶端,供所述墨供给芯(20)贯通且使所述墨供给芯(20)的顶端突出,所述墨供给芯(20)在笔压的作用下在所述芯周围构件(30)的顶端向后方移动,并且所述墨供给芯的相对于所述芯周围构件(30)的顶端突出的突出尺寸设为0.05mm～0.7mm。(The purpose of the present invention is to provide a kind of writing implement for changing the width for retouching line freely under the action of pen pressure, which can correspond to the signature pen of thin bar or the marking pen of thin bar.Writing implement (1) includes penholder (10)；Ink supply core (20), is accommodated in the inside of the penholder (10), guides ink using capillary force；And core peripheral member (30), its top for being installed on the penholder 10, for ink supply core (20) perforation and keep the top of ink supply core (20) prominent, ink supply core (20) is rearward moved under the action of pen pressure on the top of the core peripheral member (30), and the top prominent size outstanding relative to the core peripheral member (30) of the ink supply core is set as 0.05mm~0.7mm.)

1. a kind of writing implement, which is characterized in that

The writing implement includes

Penholder；

Ink supply core, is accommodated in the inside of the penholder, guides ink using capillary force；And

Core peripheral member is installed on the top of the penholder, for the ink supply core perforation and makes the black top for supplying core Distal process goes out,

The ink supply core rearward moves under the action of pen pressure on the top of the core peripheral member, also,

The prominent size outstanding of the top relative to the core peripheral member of the ink supply core is 0.05mm when non-writing ~0.7mm.

2. writing implement according to claim 1, which is characterized in that

The ink supply core has the flow path that ink is guided using capillary force in inside,

The core peripheral member has the top top end opening outstanding for making the ink supply core,

It is 0.5mm or less that the value that the outer diameter of the flow path obtains is subtracted from the internal diameter of the top end opening.

3. writing implement according to claim 2, which is characterized in that

The value of the outer diameter of the flow path is subtracted from the internal diameter of the top end opening less than 0.

4. writing implement described in any one of claim 1 to 3, which is characterized in that

The core peripheral member has top end part, rear end and the elasticity being clipped in the middle by the top end part and the rear end Portion,

Using the elastic portion, the ink supply core can rearward move together with the rear end.

5. writing implement according to claim 4, which is characterized in that

The elastic portion is integrated with the top end part.

6. writing implement according to claim 4, which is characterized in that

The elastic portion is seperated with the top end part.

7. the writing implement according to any one of claim 4~6, which is characterized in that

The elastic portion rearward extends under the action of pen pressure.

8. the writing implement according to any one of claim 4~7, which is characterized in that

The ink supply core and the core peripheral member are fixed to each other.

9. writing implement according to claim 8, which is characterized in that

The fixation is carried out using the blastic deformation of the outer peripheral surface of the rear end of the core peripheral member.

10. writing implement according to claim 1, which is characterized in that

Being equipped in the tip portion of the ink supply core makes the gap between the ink supply core and the core peripheral member whole The enlarged portion expanded on week.

11. writing implement according to claim 10, which is characterized in that

In the black tip portion for supplying core in the stage portion for reducing outer diameter discontinuously is arranged on complete cycle, so that institute be arranged State enlarged portion.

12. writing implement according to claim 10, which is characterized in that

By spreading the endless groove of complete cycle in the tip portion setting of the ink supply core, so that the enlarged portion be arranged.

13. writing implement described in any one of 0~12 according to claim 1, which is characterized in that

Under the identical writing load, the writing angle relative to writing surface is 60 ° and retouches line width divided by relative to writing The value that line width obtains of retouching that the writing angle in face is 90 ° is 0.67 more than and less than 1.5.

Technical field

The present invention relates to a kind of writing implements.

Background technique

In Japanese Unexamined Patent Publication 2016-026930 bulletin, such a writing implement is recorded comprising: penholder；Ink Core is supplied, the inside of the penholder is accommodated in, ink can be guided using capillary force；And core peripheral member, cover institute The periphery of ink supply core is stated, which makes described black a part for supplying core and a part of the core peripheral member from institute The top for stating penholder is exposed, which is characterized in that the writing implement is formed as, including can make the ink supply core The displacement unit of the opposite variation of the positional relationship in axial direction between the core peripheral member, passes through and utilizes institute's displacement unit Make it is described ink supply core relatively rearward moved relative to the core peripheral member, can make it is described ink supply core top and The top of the core peripheral member simultaneously with write face contact.

In this way, usually being seen in the writing implement that the inside of penholder is accommodated with the core peripheral member of ink supply supply core perforation It is supplied between core and core peripheral member to the ink for being directed into top under the action of the capillary force of ink supply core along inking The phenomenon being raised in penholder.Such as in the case where forming penholder by internal material can be seen, it is seen that rise in penholder Ink can damage appearance.Moreover, there is also the feelings of the inside of dry ink blocking connection penholder and external air displacement hole Condition, and the displacement between ink and air is hindered, ink be discharged can not, and damage writing function.

Summary of the invention

Problems to be solved by the invention

The scheme of the disclosure is designed to provide a kind of book for changing the width for retouching line freely under the action of pen pressure Tool is write, which can correspond to the signature pen of thin bar or the marking pen of thin bar.

Moreover, the purpose of another program of the disclosure is, in addition to above-mentioned purpose, also prevent from drawing using capillary force The ink for leading the top exudation of the ink supply core of ink is supplied along inking rises to the phenomenon in penholder between core and core peripheral member.

The solution to the problem

Writing implement involved in 1st scheme of the disclosure is characterized in that,

The writing implement includes

Penholder；

Ink supply core, is accommodated in the inside of the penholder, guides ink using capillary force；And

Core peripheral member is installed on the top of the penholder, for the ink supply core perforation and makes the ink supply core Top it is prominent,

The ink supply core rearward moves under the action of pen pressure on the top of the core peripheral member, also,

It is described ink supply core the prominent size outstanding of the top relative to the core peripheral member be when non-writing 0.05mm~0.7mm.

Writing implement involved in 2nd scheme of the disclosure is characterized in that, except writing work involved in the 1st scheme Other than the feature of tool, the ink supply core has the flow path that ink is guided using capillary force in inside,

The core peripheral member has top end opening, and the top of the ink supply core is equivalent to the top end opening and protrudes,

It is 0.5mm or less that the value that the outer diameter of the flow path obtains is subtracted from the internal diameter of the top end opening.

In addition, the numerical value is likely to become negative.

Writing implement involved in 3rd scheme of the disclosure is characterized in that, except writing work involved in the 2nd scheme Other than the feature of tool, value that the outer diameter of the flow path obtains is subtracted from the internal diameter of the top end opening less than 0.

Writing implement involved in 4th scheme of the disclosure is characterized in that, removes either a program institute in the described 1st~the 3rd Other than the feature for the writing implement being related to, the core peripheral member has top end part, rear end and by the top end part and institute The elastic portion that rear end is clipped in the middle is stated,

Using the elastic portion, the ink supply core can rearward move together with the rear end.

Writing implement involved in 5th scheme of the disclosure is characterized in that, except writing work involved in the 4th scheme Other than the feature of tool, the elastic portion is integrated with the top end part.

Writing implement involved in 6th scheme of the disclosure is characterized in that, except writing work involved in the 4th scheme Other than the feature of tool, the elastic portion is seperated with the top end part.

Writing implement involved in 7th scheme of the disclosure is characterized in that, removes either a program institute in the described 4th~the 6th Other than the feature for the writing implement being related to, the elastic portion rearward extends under the action of pen pressure.

Writing implement involved in 8th scheme of the disclosure is characterized in that, removes either a program institute in the described 4th~the 7th Other than the feature for the writing implement being related to, the ink supply core and the core peripheral member are fixed to each other.

Writing implement involved in 9th scheme of the disclosure is characterized in that, except writing work involved in the 8th scheme Other than the feature of tool, the fixation is carried out by the blastic deformation of the outer peripheral surface of the rear end of the core peripheral member.

Writing implement involved in 10th scheme of the disclosure is characterized in that, is set up separately in the top end part of the ink supply core There is the enlarged portion for expanding the gap between the ink supply core and the core peripheral member on complete cycle.

Writing implement involved in 11st scheme of the disclosure is characterized in that, except writing involved in the 10th scheme Other than the feature of tool, by the tip portion in the ink supply core in the platform that setting reduces outer diameter discontinuously on complete cycle Rank portion, so that the enlarged portion be arranged.

Writing implement involved in 12nd scheme of the disclosure is characterized in that, except writing involved in the 10th scheme Other than the feature of tool, by spreading the endless groove of complete cycle in the tip portion setting of the ink supply core, thus described in setting Enlarged portion.

Writing implement involved in 13rd scheme of the disclosure is characterized in that, removes either a program in the described 10th~the 11st It is 60 ° by the writing angle relative to writing surface under identical writing load other than the feature of related writing implement It is 0.67 more than and less than 1.5 that line width, which is retouched, divided by the value that line width obtains of retouching that the writing angle relative to writing surface is 90 °, More preferably 0.9 more than and less than 1.1.In addition, when the value is less than 0.67 and when the value is 1.5 or more, according to writing item Part, leads to the change width for retouching line, and user be difficult to carry out using.

The effect of invention

Each scheme of the disclosure is constituted as described above, thus in the signature pen of thin bar or the marking pen of thin bar, also can It is enough to change the width for retouching line freely under the action of pen pressure.

In addition, in the specific mode of the disclosure, in addition to said effect, additionally it is possible to prevent from drawing using capillary force The ink for leading the top exudation of the ink supply core of ink is supplied along inking rises to the phenomenon in penholder between core and core peripheral member.

Detailed description of the invention

Figure 1A is the integrally-built main view for indicating writing implement involved in the 1st embodiment.Figure 1B is Figure 1A α-α cross-sectional view.

Fig. 2 is the figure for amplifying the main portions of Figure 1B.

Fig. 3 A is the perspective view for indicating the holding component of writing implement involved in the 1st embodiment.

Fig. 3 B is the side view for indicating the holding component of writing implement involved in the 1st embodiment.

Fig. 3 C is the β-β cross-sectional view of Fig. 3 B.

Fig. 4 A is the perspective view for indicating the pen cap of writing implement involved in the 1st embodiment.

Fig. 4 B is the γ-γ cross-sectional view of Fig. 4 A.

Fig. 4 C is the δ-δ cross-sectional view of Fig. 4 A.

Fig. 5 A is the top view for indicating the head of pen cap of writing implement involved in the 1st embodiment.

Fig. 5 B is the bottom view (B) for indicating the insertion section of pen cap of writing implement involved in the 1st embodiment.

Fig. 5 C is to indicate that the side of state when being inserted into front bar to the pen cap of writing implement involved in the 1st embodiment is cutd open View.

Fig. 6 A is the perspective view for indicating the tail plug of writing implement involved in the 1st embodiment.

Fig. 6 B is the side view for indicating the tail plug of writing implement involved in the 1st embodiment.

Fig. 6 C is the ε-ε cross-sectional view of Fig. 6 B.

Fig. 7 A is the perspective view of the core peripheral member of writing implement involved in the 1st embodiment.

Fig. 7 B is the side view of the core peripheral member of writing implement involved in the 1st embodiment.

Fig. 7 C is the ζ-ζ cross-sectional view of Fig. 7 B.

Fig. 8 A is the side view for indicating the variation of core peripheral member of writing implement involved in the 1st embodiment.

Fig. 8 B is the η-η cross-sectional view of Fig. 8 A.

Fig. 9 A be indicate writing implement involved in the 1st embodiment ink supply core and core peripheral member movement before The cross-sectional view of state.

Fig. 9 B is in the movement of ink supply core and core peripheral member for indicate writing implement involved in the 1st embodiment The cross-sectional view of state.

Figure 10 A is the enlarged cross-sectional view for indicating the top end part of writing implement involved in the 1st embodiment.

Figure 10 B is the θ-θ cross-sectional view for indicating an example of ink supply core of Figure 10 A.

Figure 10 C is indicated another example of the ink supply core of Figure 10 A by cross-sectional view identical with Figure 10 B.

Figure 11 A is the integrally-built perspective view for indicating writing implement involved in the 2nd embodiment.

Figure 11 B is the integrally-built main view for indicating writing implement involved in the 2nd embodiment.

Figure 11 C is the ι-ι cross-sectional view of Figure 11 B.

Figure 12 is the main portions enlarged drawing of Figure 11 C.

Figure 13 A is the main view of the holding component of writing implement involved in the 2nd embodiment.

Figure 13 B is the front stereogram of the holding component of Figure 13 A.

Figure 13 C is the rear stereogram of the holding component of Figure 13 A.

Figure 13 D is the top view of the holding component of Figure 13 A.

Figure 13 E is the bottom view of the holding component of Figure 13 A.

Figure 13 F is the κ-κ cross-sectional view of Figure 13 A.

Figure 14 A is the perspective view of the penholder of writing implement involved in the 2nd embodiment.

Figure 14 B is the main view of the penholder of Figure 14 A.

Figure 14 C is the top view of the penholder of Figure 14 A.

Figure 14 D is the bottom view of the penholder of Figure 14 A.

Figure 14 E is the λ-λ cross-sectional view of Figure 14 B.

Figure 15 A is the perspective view of the variation of penholder shown in figure 14 A.

Figure 15 B is the main view of the penholder of Figure 15 A.

Figure 15 C is the top view of the penholder of Figure 15 A.

Figure 15 D is the bottom view of the penholder of Figure 15 A.

Figure 15 E is the μ-μ cross-sectional view of Figure 15 A.

Figure 16 A is the main view of the tail plug of writing implement involved in the 2nd embodiment.

Figure 16 B is the ν-ν cross-sectional view of Figure 16 A.

Figure 17 A is the figure after the tip portion of Figure 12 is further amplified.

Figure 17 B indicates the variation of Figure 17 A.

Specific embodiment

Hereinafter, illustrating to write work involved in present embodiment by taking the signature pen of thin bar or marking pen as an example referring to attached drawing Tool 1.In addition, in the drawings, for writing implement 1 and its structure member, " front " indicates the side on the top of writing implement 1 To the direction of the opposite side of " rear " expression " top ", " axial direction " indicates the side for penetrating into the axis at rear from the front of penholder 10 To " cross-directional " indicates direction orthogonal to the axial direction.Moreover, even if not specifically mentioned in the explanation of each attached drawing, each attached The appended drawing reference that mark is shared between figure also illustrates that identical structure or component.

The overall structure > of the 1st embodiment of <

As shown in Figure 1A, writing implement 1 involved in the 1st embodiment includes the front bar 11 and more of integrally formed more path Made of the rear bar 12 of major diameter (referring to Fig. 2) penholder 10 and be installed on front bar 11 front side core peripheral member 30.Such as Figure 1B It is shown, the core cotton (Japanese: middle silk floss) 15 of storage ink is accommodated in the inside of rear bar 12.Being equipped near the top of front bar 11 can The air replacement hole 11E for making air circulate between the inside and outside of penholder 10.

In addition, ink supply core 20 runs through core peripheral member 30.The top of ink supply core 20 is from the top of core peripheral member 30 Distal process goes out.Until the rear end of ink supply core 20 extends to the front end for penetrating core cotton 15.

In addition, it is not shown in figure 1A, but the pen cap 50 shown in 11 installation diagram 4A~Fig. 4 C of front bar shown in figure 1A.

(construction of penholder)

As shown in Figure 1B, as described above, penholder 10 has front bar 11 and rear bar 12.In the open-ended of the front of front bar 11 There is front opening 13, open-ended at the rear of rear bar 12 has rear portion opening 14.In addition, having tail plug in 14 indentation of rear portion opening 60。

In addition, as shown in Figure 3A, the shape of penholder 10 is formed as four sides that the section in cross-directional integrally has fillet Shape.

As shown in Fig. 2, rear bar 12 is integrally formed with the rear portion handle part 12B of rear side and by aftermentioned holding component 40 The front handle part 12A of the front side of covering.

In addition, front handle part 12A and rear portion handle part 12B has in its boundary portion 12C towards made of the undergauge of front Step, the thickness of front handle part 12A is less than the thickness of rear portion handle part 12B as a result,.

In addition, being equipped with multiple slot 12D in the part of the outer peripheral surface of front handle part 12A, multiple slot 12D has Rectangular shape longer in the axial direction.Slot 12D is for aftermentioned in the inner surface locking piece outstanding for holding component 40 44 insertions.

In addition, the end 12E in the front of front handle part 12A is formed with the section in cross-directional as dome arcuation Face, in front, the integrally formed front bar 11 in the front of handle part 12A is narrower than end 12E.

In addition, the flange part 62 of tail plug 60 is in contact (B referring to Fig.1) with the end edge of rear bar 12.

As shown in Fig. 2, front bar 11 is from rear end with root 11A, reducing diameter part 11B, top end part 11C and locking side 11D.

Root 11A is the portion that the end 12E from the front of front handle part 12A is extended forwards with constant thickness Point.In addition, in root, the middle section of 11A is formed in each side along intersecting axially as shown in Fig. 2 and Fig. 3 A~Fig. 3 C Direction protrusion.These protrusions are referred to as locking protrusion 11A1.In the present embodiment, the locking protrusion 11A1 is total is equipped with 4.

Reducing diameter part 11B is the part being extended forwards in such a way that top attenuates from the front end of root 11A.

Top end part 11C is the part being extended forwards from the front end of reducing diameter part 11B with constant thickness.

Locking side 11D is the top edge of top end part 11C, the snap-latch piece with the holding section 33 of aftermentioned core peripheral member 30 33A contact.

(holding component)

As shown in Fig. 3 A~Fig. 3 C, holding component 40 to be formed as whole section is in generally square tubular, is had The front openings 42 of front openings and rearward openings 43 in rearward openings.

Locking piece 44 is located at the inside for holding component 40, as towards protruding inwardly and ridge longer in the axial direction and shape It is multiple at having.These locking pieces 44 are chimeric with multiple slot 12D that the periphery of the front handle part 12A in rear bar 12 is arranged, from And rear bar 12 is installed on by component 40 is held.

Edge part 42A is formed in the end of front openings 42.The inner surface of edge part 42A with front handle part 12A The corresponding mode of dome arcuation in section of end 12E be formed as section concave arc shape.Front openings 42 are by can be for preceding The size of the root 11A insertion of bar 11 is formed.

It is formed with end face 43A in the end of rearward openings 43, the side of the rear portion handle part 12B of end face 43A and rear bar 12 The step surface of portion, boundary 12C is in contact.

In addition, as shown in Figure 3A and Figure 3B, the color different from penholder 10 can be endowed by holding component 40, the color example It such as can be set to and be stored in the color of the ink of core cotton 15 being similar in color.

In addition, can for example form to form penholder 10 and holding component 40 by two colors.

(pen cap)

As shown in Fig. 4 A~Fig. 4 C and Fig. 5 A~Fig. 5 C, pen cap 50 has pen cap outer cylinder 51 and pen cap inner cylinder 52.

As shown in Figure 4 A, pen cap outer cylinder 51 is integrally formed into barrel shape, has opening in front and back.Wherein, will The opening at rear is referred to as rearward openings 54.The outer peripheral surface of the pen cap outer cylinder 51 is formed as section and penholder 10 in cross-directional Outer peripheral surface is identical and integrally has the quadrangle of fillet.

As shown in Fig. 4 A~Fig. 4 C and Fig. 5 A~Fig. 5 C, pen cap inner cylinder 52 is formed as the tubular of top closure and rear end open Shape.Pen cap inner cylinder 52 is accommodated in the first half of the inside of pen cap outer cylinder 51, and open rear end part utilization is discontinuously impartial The inner peripheral surface of the substantial mid-portion of the linking part 52A and pen cap outer cylinder 51 of configuration links.Become between these linking parts 52A more A through hole 53A.In addition, the end edge of pen cap inner cylinder 52 becomes the discontinuous edge 52B being truncated by linking part 52A.In this reality It applies in mode, linking part 52A and discontinuous edge 52B are respectively formed at eight.

In addition, the top of the closed tip portion of pen cap inner cylinder 52 and pen cap outer cylinder 51 becomes same plane, around It is surrounded by continuous circumferential groove 53.Circumferential groove 53 is connected using the latter half of the inside of the through hole 53A and pen cap outer cylinder 51 It is logical.

Above-mentioned front bar 11 (A and Figure 1B and Fig. 3 A~Fig. 3 C referring to Fig.1) is inserted into from rearward openings 54.

Locking protrusion 55 is the multiple protrusions formed intersecting axiallyly near the rear end of the inner surface of pen cap outer cylinder 51, By the way that the locking protrusion 11A1 set on front bar 11 towards rear is crossed from front using flexible deformation (referring to Fig. 2 and figure 3A~Fig. 3 C), so that locking protrusion 55 and the locking protrusion 11A1 are mutually locking.Pen cap 50 is installed on penholder 10 as a result,.

In the present embodiment, as shown in Figure 4 A, each side with fillet of multiple locking protrusions 55 and pen cap outer cylinder 51 Face is correspondingly equipped with total four.

As shown in figs. 4 b and 4 c, guide plate 56 is formed as the interior table that pen cap outer cylinder 51 is attached to from the linking part 52A The inclined ridge in face.In the present embodiment, multiple guide plates 56 are equably configured with six total.

Moreover, as shown in Figure 5 C, by front bar 11 from 54 one side of rearward openings of pen cap 50 with the rearward openings 54 When periphery 54A sliding contact is inserted on one side, the reducing diameter part 31 and ink supply core of multiple 56 guiding core peripheral member 30 of guide plate 20 top end part 23, to avoid the collision of reducing diameter part 31, top end part 23 and discontinuous edge 52B and prevent breakage.

(tail plug)

As figs. 6 a to 6 c, tail plug 60 is integrally formed into barrel shape, has insertion section 61, flange part 62 and head Portion 63.The top of insertion section 61 becomes tail portion 64.

The rear portion opening 14 of insertion section 61 from the rear bar 12 of penholder 10 is inserted in the inside of rear bar 12, and blocks rear portion opening 14 (B referring to Fig.1).

The end face of flange part 62 and rear portion opening 14 is closely sealed and closes the inside of rear bar 12, by the inside of rear bar 12 and outside Gas barrier.

Head 63 is formed in a manner of rearward extending from flange part 62, can be in advance installed on pen cap 50 when writing The head 63.

For the shape of tail plug 60, the section in the cross-directional on insertion section 61 and head 63 is formed as round, but flange Cross sectional shape in the cross-directional in portion 62 is identical as the cross sectional shape in the cross-directional of penholder 10 and is formed to have fillet Quadrangle.That is, tail plug 60 is in the rear portion opening 14 for being inserted in penholder 10 so that flange part 62 and rear bar 12 become phase similar shape The mode of shape keeps shape consistent.

In addition, instead of the tail plug 60, additionally it is possible to install other writing portions (not shown).Here, other writing portions are logical It crosses and the outer diameter for being inserted in the part of rear bar 12 is set as shape identical with the insertion section 61 of tail plug 60, so as to by penholder 10 The such top of writing of present embodiment is used for be only located at the writing implement 1 of one end and write the writing work that top is located at both ends Tool.

(core cotton)

Core cotton 15 shown in Figure 1B is made of the Polyester Fibers of the cylindrical shape of storage ink, after being accommodated in penholder 10 The inside of bar 12.

Moreover, as shown in Fig. 2, the end in the front of core cotton 15 is internally located at ratio in the front handle part 12A of rear bar 12 The position of boundary portion 12C slightly on the front, and with multiple rib 12A1 for being axially formed on the inner peripheral surface of front handle part 12A (referring to Fig. 3 C) is in contact.

On the other hand, the end at the rear of core cotton 15 is located at the position contacted with the tail portion 64 for the tail plug 60 for being embedded in rear bar 12 It sets.

It is as shown in Figure 1B as a result, and core cotton 15 is consolidated by the clamping of the tail portion 64 of the rib 12A1 of front handle part 12A and tail plug 60 It is fixed.

The structure > of < main portions

Here, the ink supply core 20 and core peripheral member 30 to the main portions as present embodiment carry out specifically It is bright.

[ink supply core]

As shown in Fig. 2, ink supply core 20 have peripheral part 21, flow path 22, top end part 23, rear end 24 (B referring to Fig.1) with And main part 25.

Ink supply core 20 is formed and carrying out extrusion forming to polyacetal resin, and the shape of ink supply core 20 is from front side It is integrally formed general cylindrical shape towards rear side, top end part 23 constitutes the cone shape of undergauge forwards, and rear end 24 constitutes court The rearward cone shape of undergauge, the main part 25 being clipped in the middle by the top end part 23 and the rear end 24 are constituted and top end part 23 Beginning undergauge position outer diameter and rear end 24 beginning undergauge position the identical outer diameter of outer diameter cylindrical shape.In This, ink supply core 20 can also be made of fibre bundle core, sintering core etc..

(peripheral part)

Peripheral part 21 constitutes the lateral surface of ink supply core 20.The part and position on the top positioned at top end part 23 of peripheral part 21 It is formed in a manner of exposing aftermentioned flow path 22 in the part on the top of rear end 24.

(flow path)

Flow path 22 is formed along the axle center of the inside of peripheral part 21, as described above, flow path 22 is located in peripheral part 21 respectively Top end part 23 and rear end 24 part expose.

Here, when extrusion forming ink supplies core 20, by using the mould in central part with thinner gap, thus The central part in section forms the flow path 22 as thinner gap.The flow path 22 as gap plays capillary force, and protects Hold ink.In this case, peripheral part 21 and flow path 22 are integrally formed in ink supply core 20.

The part that flow path 22 is formed as the part along axle center in the cross-sectional view of Figure 10 A, occupies diameter W2, occupies stream Part around road 22 is peripheral part 21.

As cross-sectional view of the flow path 22 for example formed as the supply core 20 of ink shown in Figure 10 B, the inner peripherals of axial portions Region with irregular cavity determines the outer diameter W2 of flow path as diameter of a circle hypothetically external with the cavity.Separately Outside, flow path 22 for example can also the others example as shown in the cross-sectional view of Figure 10 C, be formed to have comprising than Figure 10 B Shown in the thin branch of flow path 22 cavity region.In the others example, the outer diameter W2 of flow path is greater than shown in Figure 10 B The outer diameter W2 of the flow path of example, the ratio shared in the section of ink supply core 20 of flow path 22 are higher.

In addition, by with capillary pipe structure fibre bundle core or sintering core form flow path 22 in the case where, by will be outer Circumference 21 is set as the construction of the lateral surface of cladding flow path 22 and is formed, thus in ink supply core 20, it can be by the peripheral part 21 It is set as the wall thickness part in the outside of flow path 22, can make the lateral surface of flow path 22 that ink supply core 20 are unexposedly fixed on core week Enclose component 30.

In ink supply core 20, the ink for being stored in core cotton 15 is inserted in the rear end of core cotton 15 certainly under the action of capillary force Portion 24 is directed into top end part 23.

[core peripheral member]

As shown in Fig. 7 A~Fig. 7 C, core peripheral member 30 has top end part 30A, central portion from front side towards rear side 30B and rear end 30C.

Top end part 30A has reducing diameter part 31, cylindrical portion 32 and holding section 33.Central portion 30B is made of elastic portion 34.Afterwards End 30C is made of canister portion 35.

Core peripheral member 30 also has through portion 37, which to rear end penetrates through top end part 30A, center from top Portion 30B and rear end 30C.As shown in Fig. 2, ink supply core 20 runs through the through portion 37.

In the present embodiment, reducing diameter part 31, cylindrical portion 32, holding section 33, elastic portion 34, canister portion 35 are formed as one, Basic configuration in addition to reducing diameter part 31 is cylindrical shape.

From the viewpoint of the creep resistant of low frictional properties, abrasion performance and elastic portion 34 when writing, structure around core Part 30 is preferably formed by polyacetal resin.

(reducing diameter part)

As seen in figure 7 c, reducing diameter part 31 is located at the position of the front side of core peripheral member 30, is formed towards front undergauge Cone-shaped.

It is formed with circular top end opening 31A on the top of reducing diameter part 31, opening is formed with around top end opening 31A Peripheral part 31B.On the other hand, the through portion 37 at reducing diameter part 31 becomes the 1st through portion 37A.

1st through portion 37A has the stop surface 37A1 towards top end opening 31A undergauge, above-mentioned ink supply core 20 The side of top end part 23 contacts and locking with stop surface 37A1, so that the top of the top end part 23 of ink supply core 20 is prominent to outside Out (referring to Fig. 2).

In addition, as seen in figure 7 c, the interior 31A of top end opening without leave of the 1st through portion 37A at reducing diameter part 31 expands towards rear Greatly.The shape is corresponding with the ink supply cone shape of outer peripheral surface of top end part 23 of core 20.

(cylindrical portion)

As shown in Fig. 7 A~Fig. 7 C, cylindrical portion 32 is connected with the rear side of reducing diameter part 31, and is formed to have and reducing diameter part The cylindrical shape outer diameter of 31 rear end identical outer diameter and extended rearward.

Through portion 37 at cylindrical portion 32 then reducing diameter part 31 and become the 1st through portion 37A.

The 1st through portion 37A at the cylindrical portion 32 is formed to have the rear end with the 1st through portion 37A at reducing diameter part 31 The rounded hole in section of the identical internal diameter of internal diameter be endowed and in such a way that ink supply core 20 can move in the axial direction Greater than the internal diameter of the outer diameter of ink supply core 20.

(holding section)

As shown in Fig. 7 A~Fig. 7 C, holding section 33 is via the discoid card with the outer diameter bigger than the outer diameter of cylindrical portion 32 The rear end for closing piece 33A from cylindrical portion 32 is continuously provided.The outer diameter of holding section 33 is greater than the outer diameter of cylindrical portion 32 and is less than engaging The outer diameter of piece 33A.Holding section 33 with notch and is shaped generally as cylindrical shape partially along axial direction side.

As seen in figure 7 c, the internal diameter for penetrating through the 1st through portion 37A of cylindrical portion 32 is also identical in the inside of the holding section 33, Be formed as the circular hole then rearward extended.

(elastic portion)

As shown in Fig. 7 A~Fig. 7 C, in the present embodiment, elastic portion 34 is connected with the rear side of holding section 33, and is formed For the nest spring with the outer diameter that roughly same outer diameter of the rear end with holding section 33.The section of the helical spring is as schemed It is triangular in shape shown in 7C.

As seen in figure 7 c, it is formed in the inside of helical spring 34 from continuous 2nd perforation in the rear end of the 1st through portion 37A Portion 37B.2nd through portion 37B is formed to have the internal diameter roughly the same with the internal diameter of the 1st through portion 37A and rearward extends Circular hole.

In addition, helical spring is an example of the shape of elastic portion 34.

As elastic portion 34 helical spring by for corresponding to thin word signature pen or thin word marking pen it is preparatory really Fixed spring constant is formed, and the active force of the aftermentioned degree that can be moved in the axial direction is assigned to ink supply core 20.

(canister portion)

As shown in Fig. 7 A~Fig. 7 C, the rear end in 35 own elasticity portion 34 of canister portion is continuous, constitutes the outer diameter having with elastic portion 34 Roughly the same outer diameter and the cylindrical shape rearward extended.

In the canister portion 35, it is also formed with the 3rd through portion 37C as the circular hole rearward extended inside it, 3rd through portion 37C is continuous with the 2nd through portion 37B at elastic portion 34 and has roughly the same internal diameter.In the canister portion 35 Open rearward end has rear portion opening 35A.

In this way, core peripheral member 30 is made of from front to rear multiple positions, and relative to the 1st through portion 37A, 2 through portion 37B and the 3rd through portion 37C, from the rear portion opening 35A insertion ink supply core 20 of the rear side of core peripheral member 30.

In addition, it's not limited to that for the shape of the helical spring of composition elastic portion 34, such as shown in Fig. 8 A and Fig. 8 B, may be used also To be set as the shape that section is in quadrangle.

[fixation of the ink supply core relative to core peripheral member]

Here, being illustrated to the fixation between ink supply core 20 and core peripheral member 30.

As described above, ink supply core 20 runs through through portion 37 (the 1st through portion 37A, the 2nd perforation of core peripheral member 30 Portion 37B, the 3rd through portion 37C).

Moreover, in the present embodiment, as shown in fig. 9 a and fig. 9b, ink supply core 20 is fixed in the following manner: in core The outer peripheral surface of the canister portion 35 of the composition rear end 30C of peripheral member 30, compresses formed punch using the blastic deformation of formed punch has been used Fixed part 36 is consequently formed and presses in the protrusion 36A of the inner surface of canister portion 35 outer peripheral surface of ink supply core 20.

That is, only being fixed in the rear end 30C of core peripheral member 30 between ink supply core 20 and core peripheral member 30, and pushing up End 30A and central portion 30B are unlocked.

Ink supply core 20 is in the inside of the 1st through portion 37A of top end part 30A and the 2nd through portion of central portion 30B as a result, The inside of 37B is unlocked and can move.

In addition, ink supply core 20 retreats and plays buffering when being applied with biggish load to ink supply core 20 when writing Effect, it is thus possible to prevent the bending (Japanese: folding れ) of ink supply core 20.

The effect > of < main portions

Based on above-mentioned such structure, referring to Fig. 2, Fig. 9 A, Fig. 9 B and Figure 10 to ink supply 20 energy of core in writing implement 1 It is enough to be illustrated under the action of pen pressure to the mobile situation in the rear of core peripheral member 30.

The writing implement 1 of present embodiment has ink supply core 20 and core peripheral member 30, and ink supply core 20 has in pen The structure rearward moved under the action of pressure on the top of core peripheral member 30.

Moreover, depending on effect as shown below, writing implement 1 can make the width for retouching line free under the action of pen pressure Variation.

Firstly, to describe it is thinner retouch line in the case where, to be applied with the shape for providing pen pressure below to writing implement 1 State, at this point, the top end part 23 of ink supply core 20 is located at the top end opening 31A from core peripheral member 30 as shown in Fig. 9 A and Figure 10 Highlight the position of specific length (for example, 0.1mm or so).The top end part of the ink supply core 20 of such position can be utilized 23, in the upper description line such as paper (not shown).

At this point, as shown in Figure 9 A, as helical spring elastic portion 34 maintain length L1 state, ink supply core 20 not to Rear is mobile.

Then, to describe it is thicker in the case where retouching line, writing implement 1 is applied be more than it is described as defined in pen pressure.

Here, as shown in Figure 9 B, ink supply core 20 utilizes the protrusion of the canister portion 35 (rear end 30C) of core peripheral member 30 36A is fixed in the 3rd through portion 37C of the canister portion 35 of core peripheral member 30.

On the other hand, in the 1st through portion 37A at the top end part 30A of core peripheral member 30, the at central portion 30B the 2nd In through portion 37B, ink supply core 20 is unlocked, and when applying pen pressure, ink supply core 20 is intended to rearward move.

Then, overcome the active force of elastic portion 34 by canister portion in the fixed ink supply core 20 of the canister portion 35 of core peripheral member 30 35 rearward push, as shown in Figure 9 B, the 34 extended length Lx of elastic portion of length L1, and and become length L2.

For constituting the helical spring of the elastic portion 34, being set with can apply in the case where to describe bold-faced situation The pen pressure (the pen pressure of ink supply core is applied in the case where greater than to describe thin word) for being added on ink supply core 20 correspondingly starts The spring constant of elongation.

The top end part 23 of ink supply core 20 is slightly outstanding from the top end opening 31A of core peripheral member 30 with its top as a result, Degree rearward moves, and is slightly formed gap between the opening peripheral part 31B surrounded around top end opening 31A.

Then, ink can also be supplied to opening around the top end part 23 and encirclement top end opening 31A of ink supply core 20 Between the gap being slightly formed between mouth peripheral part 31B.Meanwhile ink supplies the top end part 23 of core 20 and opening for core peripheral member 30 Mouthful peripheral part 31B and paper (not shown) etc. contact simultaneously, thicker retouch line so as to describe.

In this way, the writing implement 1 of present embodiment is in the signature pen or marking pen of ink supply core 20 for including thin word Also the width for retouching line can be made to become relatively thick.

In addition, even if due to exceedingly applying pen pressure, ink supply core 20 can also move, apply to core peripheral member 30 and carry Lotus, therefore the vertical writing that is bent, flattening generation because of ink supply core 20 can be prevented bad.

< ink supplies top end opening outstanding prominent size > of the top end part of core relative to core peripheral member

Then, between the top end part to ink supply core and the top end opening prominent size outstanding relative to core peripheral member Relationship be illustrated.

The prominent size H1 outstanding of the top end opening 31A relative to core peripheral member 30 of the top end part 23 of ink supply core 20 (referring to Fig.1 0) is 0.05mm~0.7mm when non-writing.

The protrusion size is more preferably the range of 0.1mm~0.3mm, most preferably 0.2mm.

In addition, when being lower than the protrusion size of 0.05mm, it is difficult to describe line.In addition, being more than the protrusion size of 0.7mm When, ink supply the distance between core 20 and core peripheral member 30 farther out, and cause the style of calligraphy characterized by hollow strokes (Japanese: カ ス レ), and in pen pressure Under the action of ink supply core 20 be easy bending, buckling.

Relationship > between the outer diameter of the flow path of the internal diameter and ink supply core of the top end opening of < core peripheral member

Here, the internal diameter of the top end opening 31A of the core peripheral member 30 outstanding of top end part 23 of ink supply supply core 20 is set For W1 (mm), the outer diameter of the flow path of ink supply core 20 is set as W2 (mm), carries out having used a variety of black lines of retouching for verify The experiment of the state of the style of calligraphy characterized by hollow strokes indicates the experimental result in following table 1.The ink used is set as two used in applicant's product Kind black ink (black A and ink B).The surface tension of black A is 50m/N, viscosity 2.0mPas.In addition, the surface tension of ink B is 35m/N, viscosity 4.0mPas.In addition, in following table 1, as inventor to the circle for having carried out about 5 loop diameter about 5cm The evaluation for retouching line when circle is write, will not see and be set as " A " the case where the style of calligraphy characterized by hollow strokes, and " B " will be set as the case where slightly seeing the style of calligraphy characterized by hollow strokes, will flown The case where Bai Mingxian, is set as " C ".

[table 1]

(embodiment 1)