CN105415924B - Retractable writing implement - Google Patents
Retractable writing implement Download PDFInfo
- Publication number
- CN105415924B CN105415924B CN201510573623.2A CN201510573623A CN105415924B CN 105415924 B CN105415924 B CN 105415924B CN 201510573623 A CN201510573623 A CN 201510573623A CN 105415924 B CN105415924 B CN 105415924B
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- China
- Prior art keywords
- beam barrel
- core unit
- cover
- closing member
- engagement piece
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims description 50
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 229920000742 Cotton Polymers 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical class [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
Landscapes
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
- Pens And Brushes (AREA)
Abstract
The present invention provides a kind of operational good retractable writing implement of middle core unit.Middle core unit (20) in beam barrel (10) has：Support cylinder portion (21a), make writing portion (22a) prominent forwards and supported；And ring-type tilt stage portion (21b), tilted in direction to outside the Fang Jing that retreads in the rear side of supporting cylinder portion (21a), lid opening and closing member (50) has multiple engagement piece portions (54) rearward extended along the outer peripheral face for supporting cylinder portion (21a) at spaced intervals in the circumferential, each engagement piece portion (54) is engaging in supporting cylinder portion (21a), and rearward it is stretched by the force of force application part (60), when central core unit (20) is advanced, with the direction flexure to outside beam barrel footpath while tilt stage portion (21b) sliding contact, so as to be released from the locking state for supporting cylinder portion (21a).
Description
Technical field
Make the retractable writing implement that the writing portion of sealing state protrudes by opening cover the present invention relates to a kind of.
Background technology
Generally, in marking pen or signature pen etc., in order to prevent the drying of writing portion, most feelings by simple structure
Cap structure is used under condition.But hat type writing implement has following room for improvement：Two are used when loading and unloading the cap for brush
Hand；Be possible to the cap for brush causes to come off because of fall impacting etc.；And ink being possible to impact when pulling open the cap for brush and splashing.
Then, for example, in the invention described in patent document 1, possess：Beam barrel (pipe 12 and nib 20 etc.)；SMIS
Unit (reservoir retainer 22 and retaining arm 28 etc.), is arranged in a manner of it can retreat in the beam barrel, and in front
With writing portion (writing pen point 24)；Sealing drum (barrel of valve 40), is coated in beam barrel around the writing portion,
And engaging in beam barrel in a manner of it can not advance；Cover (lid 42), the front end of the sealing drum is closed in a manner of it can open
Opening portion；Lid opening and closing member (bezel ring, 62, retaining ring 64 and lid arm 66 etc.), the cover is connected to from preceding side pressure；Force application part
(biasing element 36), the middle core unit is rearward exerted a force, also, by making the middle core unit advance to unclamp the lid
The cover is opened after opening and closing member, and protrudes the writing portion, by making the middle core unit retreat and rearward
The lid opening and closing member is stretched, closes the cover, the writing portion is retracted.
However, according to the prior art, when the middle core unit advances, first, make the outer peripheral face of retaining arm 28
Less protuberance 34 is connected to retaining ring 64 and promotes the retaining ring 64.Also, by the promotion, it is being connected in bezel ring, 62
After the inner face of beam barrel front end, the protuberance 34 is entered in retaining ring 64, and then the middle core unit is advanced (with reference to special
Fig. 3~5 of sharp document 1).
Accordingly it is desirable to the size of protuberance 34 is accurately managed, if for example, the overhang of protuberance 34 is too small, should
Protuberance 34 is not connected to retaining ring 64 and advanced in retaining ring 64, if also, protuberance 34 overhang it is excessive, this is prominent
Go out portion 34 to be not easily accessible in retaining ring 64, can cause operational reduction under any circumstance.
Patent document 1：Japan Patent public affairs table 2012-516252 publications
The content of the invention
The present invention be in view of above-mentioned conventional situation and complete, its problem in offer the operability of core unit it is good
Retractable writing implement.
It is a kind of retractable writing implement, to possess for solving a kind of embodiment of above-mentioned problem：Beam barrel；SMIS list
Member, it is arranged in a manner of it can retreat in the beam barrel, and writing portion is protruded in front；Sealing drum, wrapped in beam barrel
Cover and the writing portion around, and engaging in beam barrel in a manner of it can not advance；Cover, sealed in a manner of it can open
Close the front end opening of the sealing drum；Lid opening and closing member, the cover is connected to from preceding side pressure；And force application part, in described
Core unit rearward exerts a force, also, described in by making the middle core unit advance unclamping and open after the lid opening and closing member
Cover, and the writing portion is protruded, by retreating the middle core unit, the lid opening and closing member is rearward stretched, is sealed
The cover is closed, the writing portion is retracted, the retractable writing implement is characterised by that the middle core unit is supporting
The rear side in the supporting cylinder portion of the writing portion, there is the tilt stage portion of the inclined ring-type in direction to outside the Fang Jing that retreads, the lid
Opening and closing member has the engagement piece portion that multiple outer peripheral faces along the supporting cylinder portion rearward extend at spaced intervals in the circumferential,
Each engagement piece portion is rearward stretched engaging in the supporting cylinder portion by the force of the force application part, when
When the middle core unit advances, and direction is bent to outside beam barrel footpath while the tilt stage portion sliding contact, so as to release
With the locking state in the supporting cylinder portion.
Invention effect
The present invention is formed as described above, therefore the operability of middle core unit is good.
Brief description of the drawings
Fig. 1 is the stereogram of one for representing retractable writing implement involved in the present invention, and Fig. 1 (a) represents to make writing
The state that portion retracts, Fig. 1 (b) represent the state for protruding writing portion.
Fig. 2 is the sectional view of one for representing beam barrel, and Fig. 2 (b) makes section have rotated 90 degree relative to Fig. 2 (a).
Fig. 3 is the stereogram of one for representing middle core unit, lid and lid opening and closing member etc..
Fig. 4 is the stereogram of one for representing lid and sealing drum.
Fig. 5 is the stereogram of one for representing lid opening and closing member.
Fig. 6 is the main portion sectional view that action when will protrude writing portion is shown in Fig. 6 (a)~Fig. 6 (c) successively.
Fig. 7 is the main portion sectional view that action when will protrude writing portion is shown in Fig. 7 (a)~Fig. 7 (c) successively,
Relative to Fig. 6, section is set to have rotated 90 degree.
In figure：1- retractable writing implements, 10- beam barrels, 12- keep away a hole, core unit in 20-, 21- cartridges, 21a-
Supporting cylinder portion, 21b- tilt stages portion, 21c- major diameter cylinders portion, 21d- engaging protrusions, 21d1- inclined planes, 22a- writing portions,
30- sealing drums, 40- covers, 42b- projections, 50- lid opening and closing members, 51- ring-type pressing portion, 52- drawing sheets portion, 53- cylinders portion,
54- engagement piece portions, 54a- are engaged hole.
Embodiment
The fisrt feature of present embodiment is a kind of retractable writing implement, to possess：Beam barrel；Middle core unit, that can enter
The mode moved back is arranged in the beam barrel, and protrudes writing portion in front；Sealing drum, the writing portion is coated in beam barrel
Around, and engaging in beam barrel in a manner of it can not advance；Cover, before the sealing drum is closed in a manner of it can open
End opening portion；Lid opening and closing member, the cover is connected to from preceding side pressure；And force application part, the middle core unit is rearward applied
Power, the cover is opened afterwards to unclamp the lid opening and closing member by making the middle core unit advance, makes the writing portion
It is prominent, by making the middle core unit retreat rearward to stretch the lid opening and closing member, and the cover is closed, made described
Writing portion is retracted, and in retractable writing implement, the middle core unit is in the rear side in the supporting cylinder portion for supporting the writing portion, tool
The tilt stage portion of the oriented outer inclined ring-types in direction of the Fang Jing that retreads, the lid opening and closing member have at spaced intervals in the circumferential
The engagement piece portion that multiple outer peripheral faces along the supporting cylinder portion rearward extend, each engagement piece portion is engaging in the supporting cylinder
Portion, and be rearward stretched by the force of the force application part, when the middle core unit advances, with the tilt stage
Direction is bent to outside beam barrel footpath while portion's sliding contact, so as to release the locking state with the supporting cylinder portion.
According to the structure, cover is opened afterwards to unclamp lid opening and closing member by making middle core unit advance, and make writing
Portion protrude when, multiple engagement piece portions respectively with the sliding contact of tilt stage portion, and to outside beam barrel footpath direction bend, each engagement piece portion
It is released from the locking state in supporting cylinder portion.Thus the frictional resistance of lid opening and closing member and middle core unit is mitigated, so as to carry
The operability of senior middle school's core unit.
As second feature, on the basis of the fisrt feature, it is provided with multiple each engagement piece portions along beam barrel
It is in axially elongated engaged hole, the outer peripheral face in the supporting cylinder portion is provided with engaging protrusion, and the engaging protrusion is inserted into
The rear end side in the engaged hole, rearward stretches the engagement piece portion.
According to the structure, the engaging protrusion of middle core unit engaging in the engaged hole of engagement piece portion rear end, and rearward
Stretch lid opening and closing member.When central core unit advances, because each engaging protrusion moves forwards in engaged hole, therefore by card
The rear end and the locking state of each locking projection for determining hole are released from.
As third feature, on the basis of the second feature, the engaging protrusion by with behind the engaged hole
The face that end abuts is set to towards the inclined inclined plane in direction in front direction beam barrel footpath.
According to the structure, when middle core unit when passing through retrogressing stretches lid opening and closing member, the card of lid opening and closing member can be made
Close piece portion to bend towards direction in beam barrel footpath by the inclination, and the engaged hole of engagement piece portion can be made to snap into deeper
The base end side of the engaging protrusion, and then, engaging protrusion engaging with engaged hole releases, so as to prevent failure.
As fourth feature, on the basis of any one of described the first to three feature, the cover is arranged to, outside it
A part for periphery is connected to the sealing drum, and using the coupling part as fulcrum, free end side is turned in front-rear direction
Move and action is opened and closed, the lid opening and closing member has the ring-type pressing portion that the cover is connected to from preceding side pressure, and has
Have from the side of radial direction one of the ring-type pressing portion and another side and just extend respectively backward and be connected to the two of the engagement piece portion
Individual drawing sheet portion, one in two drawing sheet portions configures close to the free end of the cover, and another is close
The coupling part configuration.
According to the structure, close to the free end of cover, the ring-type pressing portion due to pushing the cover passes through described
Drawing sheet portion and be supported by, therefore can prevent that the pushing force of ring-type pressing portion from reducing because of deformation etc., and cover is described
Air-tightness between the front end opening of free end side and the sealing drum reduces.
As fifth feature, it is described first to fourth any one of on the basis of feature, in the inner face of the cover,
Be provided spaced apart multiple projections in the circumferential, the projection is inserted into the sealing drum, and with the sealing drum
Side face is close or contact is (with reference to figure 4).
According to the structure, positioning when cover is closed can be carried out by multiple projections, and then, it is possible to increase
Based on cover air-tightness.
As sixth feature, on the basis of any one of described the first to five feature, in the front of the beam barrel
Set through a hole of keeping away for beam barrel wall, the front part kept away a hole and be arranged to lid opening and closing member during for advancing
Insertion is (with reference to figure 1).
According to the structure, the working space during advance of lid opening and closing member can will be made to ensure to keep away in a hole described.
In addition, in aftermentioned embodiment, also disclose that not comprising above-mentioned a part of feature, and need following constitutive requirements
Invention.
That is, the invention is a kind of retractable writing implement, is possessed：Beam barrel；Middle core unit, set in a manner of it can retreat
In in the beam barrel, and writing portion is protruded in front；Sealing drum, coated in beam barrel around the writing portion, and
Engaging in beam barrel in a manner of it can not advance；Cover, the front end opening of the sealing drum is closed in a manner of it can open；Lid
Opening and closing member, the cover is connected to from preceding side pressure；And force application part, the middle core unit is rearward exerted a force, by making
State middle core unit to advance and unclamp and open the cover after the lid opening and closing member, and make the writing portion protrusion, pass through
The middle core unit is retreated, the lid opening and closing member is rearward stretched, closes the cover, and the writing portion is contracted
Return, in retractable writing implement, a hole of keeping away for beam barrel wall is provided through in the front of the beam barrel, it is described to keep away a hole
The front partial insertion for the lid opening and closing member being arranged to during for advancing.
According to the structure, when making lid opening and closing member advance, the front of the lid opening and closing member, which is inserted in, described keeps away a hole.
Thus, it is possible to prevent the working space in order to ensure lid opening and closing member and the retractable writing implement turn into maximization.
Embodiment
Then, with reference to the accompanying drawings, preferred embodiment as characterized above is described in detail.
In the following description, " front " refers to the preceding extreme direction (direction that writing portion protrudes) of beam barrel 10, and " rear " refers to
Be the direction opposite with " front ".Also, " direction in footpath " is along the direction of the radial direction of beam barrel 10, and is referred to towards beam barrel
The direction in 10 axle center (center).And " direction outside footpath " refers to and direction in opposite direction in the footpath.Also, " beam barrel
Axially " refer to the direction along the axle center (center) of beam barrel 10.
The retractable writing implement 1 possesses：Beam barrel 10；Middle core unit 20, is arranged at the beam barrel in a manner of it can retreat
In 10, and there is writing portion 22a in front；Sealing drum 30, in beam barrel 10 around the cladding writing portion 22a, and
And engaging in beam barrel 10 in a manner of it can not advance；Cover 40, the front end of the sealing drum 30 is closed in a manner of it can open
Opening portion；Lid opening and closing member 50, the cover 40 is connected to from preceding side pressure；And force application part 60, relative to beam barrel 10 rearward
Centering core unit 20 is exerted a force, and the lid is opened after the lid opening and closing member 50 by making to unclamp before the middle core unit 20
Part 40, and the writing portion 22a is protruded, by retreating the middle core unit 20, rearward stretch the lid opening/closing portion
Part 50, the cover 40 is closed, and the writing portion 22a is retracted,
Beam barrel 10 is elongated cylinder-like part (with reference to figure 1), can be formed by single cartridge, can also pass through company
Connect multiple cartridges and form.
The beam barrel 10 makes the tapered constriction in front, and in the front of inner wall surface thereof, has lid when being used to make advance
The abutting portion 11 that opening and closing member 50 abuts.In addition, there is the opening portion 19 for being used for making writing portion 22a flexible in front end portion.
It in the whole circumference of beam barrel is in step-like face that abutting portion 11, which is, (with reference to figure 2).
Conical section in the front of beam barrel 10, it is provided with a manner of through its wall and keeps away a hole 12.In lid opening/closing portion
When part 50 advances, the front end portion of the lid opening and closing member 50 is inserted into this and kept away in a hole 12 (with reference to figure 1 (b)).
Also, the inner peripheral surface in the front of beam barrel 10 is provided with：Convex portion 13 is oriented to, pilot cap opening and closing member 50 is retreated；
Engaging portion 13a, locking cover 40 and sealing drum 30 in a manner of it can not advance；And longitudinal rib 14, it is sticked in lid opening and closing member
50 and the grade of rotatable parts 24 (with reference to figure 2).
It is from the inner face protrusion of beam barrel 10 and the rib extended to beam barrel rear, in beam barrel circumference to be oriented to convex portion 13
It is provided with spaced intervals a pair (with reference to figures 2 (a)).These a pair be oriented to convex portions 13,13 beam barrel 10 inner peripheral surface circumferentially
Separate being arranged at intervals with two (with reference to figure 2 (b)) for 180 degree angle.Lateral surface of the lid opening and closing member 50 along guiding convex portion 13,13
Retreat.
Substantially in recessed when engaging portion 13a is oriented to the stage portion between convex portion 13,13 to be formed as overlooking by described two
Shape (with reference to figure 2 (a)).Engaging portion 13a receives the abutting projection 33 (with reference to figure 4) of sealing drum 30 and is kept into sealing drum 30
It can not advance.
Longitudinal rib 14 is provided with two in the first half side of the inner peripheral surface of beam barrel 10 in a manner of positioned at radially opposite sides.It is each vertical
It is continuous in strip in front-rear direction to rib 14.The end face in direction and the periphery of lid opening and closing member 50 in footpath in each longitudinal rib 14
Face approaches or sliding contact, so that the moving back and forth of lid opening and closing member 50 is stable.
Also, when rotatable parts 24 advance from the position engaging in front side engaging portion 17, the rearward end of each longitudinal rib 14
The cam ramp 24a of rotatable parts 24 is sticked in, so that rotatable parts 24 rotate.
Also, the elongated poroid pilot hole that core unit 20 is retreated in guiding is provided with the latter half of side of the inner peripheral surface of beam barrel 10
16 and make middle core unit 20 the front side of moving back and forth and rear side it is locking and abjection front side engaging portion 17 and rear side engaging portion 18
Deng.
Also, middle core unit 20 possesses：Cartridge 21；Pen core 22 and cotton core 23, it is present in inside the cartridge 21
(with reference to figure 6)；Rotatable parts 24, annularly it is installed on the periphery of cartridge 21 (with reference to figure 3)；And press section 25, block
The open rearward end portion of cartridge 21.
Also, front of core unit 20 in this, force application part 60, sealing drum 30, cover 40 and lid are installed and opened
The grade of closing part part 50 (with reference to figure 3).
Cartridge 21 has：The supporting cylinder portion 21a of minor diameter tubular (with reference to figure 6)；Ring-type tilt stage portion 21b,
Than supporting cylinder portion 21a, closer to rear side, the direction to outside the Fang Jing that retreads tilts；And major diameter cylinder portion 21c, from the tilt stage portion
21b is rearward extended.
As shown in fig. 6, supporting cylinder portion 21a is fitted together to pen core 22 inside it in a manner of it can not retreat, and make the pen core 22
The writing portion 22a of front end is protruded forwards.Annularly be provided with the supporting cylinder portion 21a force application part 60 (according to illustrated example,
For compression helical spring), in addition, being annularly provided with sealing drum 30 closer to front side than the force application part 60.
Ratio force application part 60 in cylinder portion 21a is supported closer to rear side outer peripheral face, with prominent to the both sides of radial direction
Mode is provided with two engaging protrusions 21d, 21d.These engaging protrusions 21d, 21d are sticked in lid opening and closing member 50 described later.
The face that the rear end of engaged hole 54a with engagement piece portion 54 abuts is set to towards front direction by each engaging protrusion 21d
The inclined inclined plane 21d1 in direction in beam barrel footpath.
By the way that a large amount of synthetic resin fibers are converged into shaft-like to form, its front end has such as shell shape or inclined pen core 22
The writing portion 22a (with reference to figure 6 and Fig. 7) of angular cut shape etc., appropriate shape corresponding with the purposes of the retractable writing implement.
Cotton core 23 is by making cylindrical bound a large amount of fibers be impregnated with ink to form, and its leading section is inserted with pen core
22 rearward end (with reference to figure 6 and Fig. 7).
Also, tilt stage portion 21b is the inclined plane in direction outside Fang Jing of being retreaded towards beam barrel, and is formed as circumferential in beam barrel
Complete cycle on continuous ring-type (with reference to figure 3).
When central core unit 20 advances in beam barrel 10, tilt stage portion 21b is connected to the engaging of lid opening and closing member 50
The rear end in piece portion, its angle of inclination are set appropriately, so that direction bends (reference chart outside the lateral footpath in the rear end of the engagement piece portion
6)。
Major diameter cylinder portion 21c is rearward extended from tilt stage portion 21b maximum gauge part.The major diameter cylinder portion
21c periphery is annularly chimeric rotatable parts 24.Also, press section 25 is connected with major diameter cylinder portion 21c rear end, big
Diameter cylinder portion 21c inner containment has cotton core 23.
Rotatable parts 24 are the longitudinal ribs 14 that the inner peripheral surface of beam barrel 10 is sticked in by being wholely set in annular body portion 24b
Cam ramp 24a and direction is capable of locking raised 24c of elastic deformation etc. and formed into beam barrel footpath.Cam ramp 24a shapes
The projection that Cheng Yucong annular bodies portion 24b front-end edge protrudes forwards.Also, locking projection 24c is arranged at from annular body
The projection piece that portion 24b back edge rearward protrudes, and direction is prominent to outside beam barrel footpath.
Also, sealing drum 30 is supported around cylinder portion 21a leading section and writing portion 22a for cladding, and that can retreat
Mode be installed on supporting cylinder portion 21a front substantially cylindric part.
The rear end side inner peripheral surface of the sealing drum 30, it is provided with supporting cylinder portion 21a outer peripheral face sliding contact and keeps gas
The circular protrusion 31 of close property (with reference to figure 6 and Fig. 7).
Also, the rear end side outer peripheral face of sealing drum 30 is provided with the stage portion 32 for the front end for receiving force application part 60.
Radially opposite sides in the front outer peripheral face of sealing drum 30, which are provided with, abuts projection 33 (with reference to figure 4).The abutting is dashed forward
The 33 engaging portion 13a (with reference to figure 2) being connected in beam barrel 10 are played, are moved forwards so as to limit sealing drum 30.
The front inner peripheral portion of sealing drum 30 is provided with the seal 34 of tubular.The seal 34 is by by elastomer resin
It is shaped in sealing drum 30 and forms.When by the front end opening of the close encapsulation cylinder 30 of cover 40, the seal 34
The inner face of cover 40 is crimped on, so as to improve the sealing in sealing drum 30.
Also, the front in the peripheral part of sealing drum 30, is provided with cover 40 in a manner of to be opened/closed.
Cover 40 is integrally formed by synthetic resin material (such as polypropylene etc.), and makes the front end with sealing drum 30
The elastic deflection of connecting portion 43 of side outer peripheral face connection, so that discoid lid body 42 rotates.
Lid body 42 is formed as that to the inner edge of the front end opening of sealing drum 30 the discoid of abjection can be embedded in, at it
Inner face, which is provided with to be located at, depends on the paracentral protrusion 42a and projection 42b around protrusion 42a.
Protrusion 42a is formed as convex surface shape prominent in sealing drum 30 under the closed state of cover 40.This is grand
The writing portion 22a that portion 42a receives to advance is played, so that the opening of lid body 42 becomes easy.
Projection 42b is located at the both sides in writing portion 22a flexible path in a manner of not disturbing writing portion 22a, and in circumference
On be provided with spaced intervals it is multiple, under the closed state of cover 40, near to or in contact with the front inner edge of sealing drum 30
And cover 40 is placed in center.According to projection 42b, when can prevent the cover 40 of closed state by conveyance or use
Vibration etc. to radial deflection, and sealing can be prevented to be damaged.
Also, connecting portion 43 connects a part and sealing drum 30 for the outer peripheral edge for the cover 40 for being substantially in closed state
A part for front outer peripheral face, and rotate cover 40 by elastic deflection, so as to be opened or be closed.
The sealing drum 30 and cover 40 of said structure can assemble separate part respectively, can also be set in advance one into
The part of type.
Also, lid opening and closing member 50 possesses：Ring-type pressing portion 51, crimped relative to cover 40 from front side；Two
Drawing sheet portion 52,52, just extend respectively backward from the side of radial direction one of ring-type pressing portion 51 and another side；Cylinder portion 53, connection
Rear end side in these drawing sheet portions 52,52；And two engagement piece portions 54,54, rearward extend from this tin portion 53, the lid is opened
Closing part part 50 is integrally formed by being capable of the synthetic resin material (such as polyformaldehyde or polypropylene etc.) of elastic deflection.
Ring-type pressing portion 51 is formed as being embedded in the ring-type of cover 40 from front side, and passes through two drawing sheet portions 52,52
Rearward it is stretched, so as to push the peripheral side before cover 40.
The ring-type pressing portion 51 by leaving and can be to before cover 40 forwards from the cover 40 of closed state
Side rotates (opening action).Also, the ring-type pressing portion 51 by from front push open mode cover 40 edge and
(closing action) (with reference to figure 6 and Fig. 7) can be rotated to the rear of the cover 40.
Drawing sheet portion 52,52 is the part being rearward extended from all sides of ring-type pressing portion 51 (with reference to figure 5).This
A side in a little drawing sheet portions 52,52 configures, the opposing party close to the free end (being upside according to Fig. 7) of the cover 40 rotated
Connecting portion 43 (being downside according to Fig. 7) close to cover 40 configures.
According to the configuration, due to being correspondingly provided with drawing sheet portion with the free end of the cover 40 close to closed state
52, thus even if producing deformation of cover 40 etc. in the case of, by being capable of school and caused tensile force according to drawing sheet portion 52
Just it is deformed, and then, it can prevent from producing gap between the free end side of cover 40 and sealing drum 30.
Cylinder portion 53 is annularly fitted together to around force application part 60 with the state with clearance, in its perisporium, in radial direction
Side and opposite side have the guiding recess 53a of front openings respectively (with reference to figure 5).Each recess 53a that is oriented to is embedded in beam barrel 10
A pair of inner face are oriented to convex portion 13,13 (with reference to figure 2), the movement of the fore-and-aft direction of pilot cap opening and closing member 50.
Configuration supporting cylinder portion 21a and force application part 60 between engagement piece portion 54,54, and it is arranged to two strand.Each snap-latch piece
Side of the portion 54 along force application part 60 is rearward extended, when central core unit 20 advances, the tilting table with middle core unit 20
The 21b sliding contacts of rank portion and to outside beam barrel footpath direction flexure (with reference to figure 6).
It is axially elongated engaged hole 54a to be provided with each engagement piece portion 54 along beam barrel.The rear end of the engaged hole 54a
Engaging protrusion 21d of the edge card due to supporting cylinder portion 21a peripheries.
Force application part 60 is compression helical spring, and its front end is connected to the stage portion of sealing drum 30, and supports rear end
The part being connected on front side of the engaging protrusion 21d in supporting cylinder portion 21a, it is flexible between sealing drum 30 and middle core unit 20.
So as to which in the state of each engagement piece portion 54 is engaging in engaging protrusion 21d, lid opening and closing member 50 passes through force application part
60 force is exerted a force forwards relative to middle core unit 20.
As shown in figure 3, above-mentioned middle core unit 20, sealing drum 30, cover 40, lid opening and closing member 50 and the quilt of force application part 60
Integration, and be inserted into from rear side in beam barrel 10.Now, by the way that not scheming for the rear end side periphery of cartridge 21 will be arranged at
The projection shown is inserted into the notch 16a of the rear end of beam barrel 10, carries out circumferential contraposition.Also, afterwards enter the projection
The inner peripheral surface side of beam barrel 10 and advance, and be embedded in pilot hole 16.
Then, the retractable writing implement 1 on said structure, its characteristic action effect is explained.
Fig. 1 and Fig. 6 (a) represents the original state for making writing portion 22a retract.In the original state, the middle periphery of core unit 20
Rotatable parts 24 by locking projection 24c be sticked in rear side engaging portion 18.
Also, under the original state, because lid opening and closing member 50 is exerted a force by force application part 60 forwards, therefore each card
The rear end inner edge for closing the engaged hole 54a in piece portion 54 is engaged the inclined plane 21d1 pushings of projection 21d rear ends.So as to each engaging
Piece portion 54 is maintained by the inclined plane 21d1 states that direction is bent into beam barrel footpath.
Under the original state, if because press section 25 is pushed to front etc., if middle core unit 20 advances, locking projection
24c directions into beam barrel footpath bend and deviate from from rear side engaging portion 18, and advance along the inner peripheral surface of beam barrel 10.Also, advance
Locking projection 24c is embedded in front side engaging portion 17 and is engaged.
During the advance, in the toe lateral of middle core unit 20, two engagement piece portions 54,54 of lid opening and closing member 50
Rearward gradually left from engaging protrusion 21d while direction is bent to outside beam barrel footpath respectively.
It is described in detail, if middle core unit 20 advances, the rear end of each engagement piece portion 54 in lid opening and closing member 50
With the tilt stage portion 21b sliding contacts of cartridge 21, each engagement piece portion 54 direction to outside footpath is bent, and each engagement piece portion
54 engaged hole 54a back edge rearward leaves from inclined plane 21d1, and major diameter cylinder portion 21c is with two snap-latch pieces of entrance
Mode between portion 54,54 is advanced (with reference to figure 6 (b)).
Also, middle core unit 20 advance during, sealing drum 30 engaging in the engaging portion 13a in beam barrel 10 and can not before
Enter, therefore the front end of pen core 22 that cover 40 is advanced by pushes and is gradually opened (with reference to figure 6 (b)).
Also, by the advance, if the front end of lid opening and closing member 50 is connected to the abutting portion 11 of the Inner Front End of beam barrel 10,
Before then lid opening and closing member 50 can not advance, but middle core unit 20 is further in a manner of entering between two engagement piece portions 54
Enter, as shown in Fig. 6 and 7 (c), writing portion 22a is protruded forwards from opening portion 19.The projected state passes through the middle side of core unit 20
Locking projection 24c be maintained with the locking of the front side engaging portion 17 of the side of beam barrel 10.
Also, under the projected state, when making writing portion 22a retract, enter to be about to the side further along of press section 25
The operation of promotion.By the operation, middle core unit 20 advances, and locking projection 24c deviates from from front side engaging portion 17 and to beam barrel 10
Inner peripheral surface side enters, and by longitudinal rib 14 (with reference to figure 2) and cam ramp 24a (with reference to figure 3) engaging, rotatable parts 24 are carried out
Rotation, locking projection 24c are located at the position for being sticked in front side engaging portion 17.
Under the state, if being released to the pushing force of press section 25, force that middle core unit 20 passes through force application part 60
And retreat, locking projection 24c is embedded in rear side engaging portion 18 and returns to original state.
During moving back in the rear, performed in the toe lateral of middle core unit 20 shown in Fig. 6~Fig. 7 (c) (b) (a)
The operation of order.
That is, middle core unit 20 retreat starting stage, lid opening and closing member 50 by the inner peripheral portion of beam barrel 10 (specifically,
Be oriented to convex portion 13 and longitudinal rib 14 etc.) friction and close to extrusion position side, and almost stand fast, each engaging protrusion 21d is in quilt
Rearward moved in connecting hole 54a, with the action, in the opening portion 19 of writing portion 22a retractions beam barrel 10, and then to sealing drum
30 inside are mobile.
Also, if middle core unit 20 continues to retreat, each engaging protrusion 21d engaging in engaged hole 54a rear end inner edge,
Therefore lid opening and closing member 50 is stretched to engaging protrusion 21d and starts to retreat.
Then, the lid opening and closing member 50 retreated pushes, and cover 40 carries out closing action, close by the cover 40
The opening portion of sealed tube 30 is closed, and returns to original original state (retracted mode).
So as to according to retractable writing implement 1, when making middle core unit 20 advance, make the engagement piece portion 54,54 of two strand
It is elastically deflected along the tilt stage portion 21b of cartridge 21, due to releasing these engagement piece portions 54,54 and middle core unit 20
It is locking, therefore resistance sense when centering core unit 20 carries out bulldozing operation can be reduced, and middle core unit 20 can be made swimmingly
Advance.
In addition, according to above-described embodiment, the structure with the engagement piece portion 54 of two lid opening and closing members 50 is set to, still,
As other examples, it can also be set to be arranged at intervals the structure of the engagement piece portion 54 of more than 3 along beam barrel circumferentially spaced.The situation
Under, the engaging protrusion 21d of the side of core unit 20 in more than 3 is also provided with, and by each engaging protrusion 21d engaging in engagement piece portion 54.
Also, according to above-described embodiment, the rear side by the locking projection 24c of the middle periphery of core unit 20, the side of beam barrel 10 is locking
Portion 18 and the grade of front side engaging portion 17 form the locking strutcture on initial position and extrusion position, but are used as other examples, pass through institute
The structure beyond locking strutcture is stated, also can be by middle core unit 20 engaging in initial position and extrusion position.
Also, cotton core formula writing implement is constituted in the above-described embodiments, but is used as other examples, can also form cotton core
Retractable writing implement beyond formula writing implement, that is, save the cotton core 23 and form direct-fluid-supply writing implement, or by pen
Core 22 and cotton core 23 are substituted for ball pen and form ball pen etc. with for core.
Claims (5)
1. a kind of retractable writing implement, it possesses：Beam barrel；Middle core unit, it is arranged in a manner of it can retreat in the beam barrel,
And protrude writing portion in front；Sealing drum, coated in beam barrel around the writing portion, and that can not advance
Mode is engaging in beam barrel；Cover, the front end opening of the sealing drum is closed in a manner of it can open；Lid opening and closing member, from
Front side is crimped on the cover；And force application part, rearward the middle core unit is exerted a force, before making the middle core unit
And then unclamp the lid opening and closing member and open the cover afterwards, protrude the writing portion, by making the middle core unit
Retreat and rearward stretch the lid opening and closing member, close the cover, and the writing portion is retracted, the telescopic book
The instrument of writing is characterised by,
The middle core unit has the inclined ring in direction to outside the Fang Jing that retreads in the rear side for supporting the supporting cylinder portion of the writing portion
The tilt stage portion of shape,
There are the lid opening and closing member multiple outer peripheral faces along the supporting cylinder portion rearward to extend at spaced intervals in the circumferential
Engagement piece portion,
Each engagement piece portion in the engagement piece portion supports cylinder portion, and applying by the force application part engaging in described
Power and be rearward stretched, when the middle core unit advances, and tilt stage portion sliding contact, and to outside beam barrel footpath
Direction is bent, so as to release the locking state with the supporting cylinder portion.
2. retractable writing implement according to claim 1, it is characterised in that
Each engagement piece portion in multiple engagement piece portions, there is elongated engaged hole to beam barrel is axially arranged,
Outer peripheral face in the supporting cylinder portion is provided with engaging protrusion, and the engaging protrusion is inserted into the rear end in the engaged hole
Side, so as to which the engagement piece portion rearward be stretched.
3. retractable writing implement according to claim 2, it is characterised in that
The face that the engaging protrusion abuts the rear end with the engaged hole is set to towards front and direction is inclined into beam barrel footpath
Oblique inclined plane.
4. retractable writing implement according to claim 1, it is characterised in that
The part that the cover is arranged to its outer peripheral edge is connected to the sealing drum, and using the coupling part as branch
Point, free end side is rotated in front-rear direction and operation be opened and closed,
The lid opening and closing member has the ring-type pressing portion that the cover is connected to from preceding side pressure, and has from the ring-type and push
One side of the radial direction in portion and another side just extend and are connected to two drawing sheet portions of the engagement piece portion respectively backward,
One in two drawing sheet portions configures close to the free end of the cover, its another close to the company
Socket part distribution is put.
5. retractable writing implement according to claim 1, it is characterised in that
Circumferentially spaced to be positioned apart from multiple projections in the inner face of the cover, the projection is inserted into the sealing
In cylinder, and with the inner peripheral surface of the sealing drum near to or in contact with.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014185664A JP6373693B2 (en) | 2014-09-11 | 2014-09-11 | Intrusive writing instrument |
| JP2014-185664 | 2014-09-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105415924A CN105415924A (en) | 2016-03-23 |
| CN105415924B true CN105415924B (en) | 2018-01-12 |
Family
ID=55494650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510573623.2A Active CN105415924B (en) | 2014-09-11 | 2015-09-10 | Retractable writing implement |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6373693B2 (en) |
| CN (1) | CN105415924B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6853701B2 (en) * | 2017-03-15 | 2021-03-31 | ゼブラ株式会社 | Knock type writing tool |
| CN112477471B (en) * | 2019-09-12 | 2024-02-06 | 东莞司贸文教赠品有限公司 | Automatic flip pen of hand push core |
| JP7474059B2 (en) | 2020-02-06 | 2024-04-24 | 三菱鉛筆株式会社 | Marking pen |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5022775A (en) * | 1989-08-09 | 1991-06-11 | Kabushiki Kaisha Sakura Kurepasu | Writing inplement with magnetic closure |
| CN1200334A (en) * | 1997-05-06 | 1998-12-02 | 戚铭俊 | Semi-automatic chalk-holder |
| CN1475372A (en) * | 2002-07-25 | 2004-02-18 | 美克罗株式会社 | Writing appliance |
| CN1618629A (en) * | 2004-06-28 | 2005-05-25 | 邱智铭 | Pressing fluorescent marking pen with propelled pen head |
| WO2004110782A3 (en) * | 2003-06-12 | 2005-07-28 | Edding Ag | Writing utensil comprising a reservoir and an integrated sealing element |
| CN101646569A (en) * | 2007-01-18 | 2010-02-10 | 桑福德有限合伙人公司 | Valve made from two materials and writing utensil with retractable tip incorporating same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3668512B2 (en) * | 1994-10-13 | 2005-07-06 | 三菱鉛筆株式会社 | Capless liquid writing instrument |
| JP4211575B2 (en) * | 2002-11-18 | 2009-01-21 | ぺんてる株式会社 | Intrusive writing instrument |
| US20080138139A1 (en) * | 2006-12-08 | 2008-06-12 | Kotobuki & Co., Ltd. | Capless writing tool |
-
2014
- 2014-09-11 JP JP2014185664A patent/JP6373693B2/en active Active
-
2015
- 2015-09-10 CN CN201510573623.2A patent/CN105415924B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5022775A (en) * | 1989-08-09 | 1991-06-11 | Kabushiki Kaisha Sakura Kurepasu | Writing inplement with magnetic closure |
| CN1200334A (en) * | 1997-05-06 | 1998-12-02 | 戚铭俊 | Semi-automatic chalk-holder |
| CN1475372A (en) * | 2002-07-25 | 2004-02-18 | 美克罗株式会社 | Writing appliance |
| WO2004110782A3 (en) * | 2003-06-12 | 2005-07-28 | Edding Ag | Writing utensil comprising a reservoir and an integrated sealing element |
| CN1618629A (en) * | 2004-06-28 | 2005-05-25 | 邱智铭 | Pressing fluorescent marking pen with propelled pen head |
| CN101646569A (en) * | 2007-01-18 | 2010-02-10 | 桑福德有限合伙人公司 | Valve made from two materials and writing utensil with retractable tip incorporating same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016055576A (en) | 2016-04-21 |
| CN105415924A (en) | 2016-03-23 |
| JP6373693B2 (en) | 2018-08-15 |
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