CN103692821B

CN103692821B - Ever sharp pencil

Info

Publication number: CN103692821B
Application number: CN201310435809.2A
Authority: CN
Inventors: 野口芳男; 金子政弘
Original assignee: Kotobuki and Co Ltd
Current assignee: Kotobuki and Co Ltd
Priority date: 2012-09-27
Filing date: 2013-09-23
Publication date: 2016-09-14
Anticipated expiration: 2033-09-23
Also published as: JP2014069316A; JP5146863B1; CN103692821A; TWI593568B; TW201422457A

Abstract

The present invention provides a kind of ever sharp pencil, and it simply can fill pen core in pen core tube, and can prevent pen core from falling from pen core tube and also improving safety.Ever sharp pencil possesses: urceolus (1)；Pen core tube (4), it is accommodated in urceolus (1) and can receive pen core (L)；Delivering mechanism (5), it is connected with the leading section of pen core tube (4) and is forwards sent by the pen core (L) in pen core tube (4)；Tap parts (6), in it is assemblied in the rearward end of urceolus (1) and be connected with the rearward end of pen core tube (4)；And guiding parts (7), it is assemblied in and taps the inside of parts (6) and have the pen core passage (70) accepting pen core (L) and guiding to pen core tube (4).The flexure strip (76) stoping the pen core (L) in pen core passage (70) to pass through it is provided with at guiding parts (7).By guiding parts tap advance in parts mobile, flexure strip release the pen core in pen core passage by stoping.

Description

Ever sharp pencil

Technical field

The present invention relates to fill in pen core tube the ever sharp pencil of pen core.

Background technology

In the past, as ever sharp pencil, it is known that the pen core delivering mechanism that there is urceolus, is accommodated in this urceolus, Be accommodated in urceolus and with the pen core tube of the back hitch of pen core delivering mechanism and in being accommodated in urceolus and With rearward end after the state dismounting that the rear end of urceolus rearward highlights is assemblied in the opening of pen core tube freely The ever sharp pencil (with reference to patent documentation 1) tapping parts of end.

The percussion parts assembled freely are dismantled in the open rearward end portion of the pen core tube of this existing ever sharp pencil It is the parts for making pen core delivering mechanism work, even if user is by the front end of ever sharp pencil upward, also In order to prevent the pen core being once filled in pen core tube from dropping from pen core tube, and rear end is blocked.This percussion portion Part owing to remove from pen core tube when pen core is filled in pen core tube from the open rearward end portion of pen core tube, institute Throat is swallowed by mistake and got lodged in these percussion parts disassembled from pen core tube cause suffocating there is child etc. Possibility.To this end, the percussion parts disclosed in patent documentation 1 have passage, even if child etc. will hit against Parts are swallowed by mistake and get lodged in throat, also ensure that ventilation thus prevent from suffocating.

Additionally, it is also proposed that have tap parts be provided with can the ever sharp pencil of lid of opening and closing (with reference to patent documentation 2).

Prior art literature

Patent documentation

Patent documentation 1: Japanese Unexamined Patent Publication 9-71090

Patent documentation 2: Japanese Unexamined Patent Publication 8-156382

Summary of the invention

The problem that invention is to be solved

But, ever sharp pencil disclosed in patent documentation 1 is not to prevent from tapping parts self to be swallowed by child etc. by mistake Pencil.Therefore, even if swallow even if these percussion parts have child etc. from this viewpoint of safety and block up by mistake Also can prevent the passage suffocated at throat, it is not the pencil that can guarantee safety completely.It addition, should The parts that tap of ever sharp pencil must be from pen when whenever the necessity that pen core is filled in pen core tube by generation The dismounting of core pipe is also assemblied on pen core tube after the filling of pen core again, thus exist have to carry out troublesome The such inconvenience of pen core filling operation.Further, in this ever sharp pencil, exist from striking that pen core tube disassembles Hit the situation of loss of parts, in this case, exist user by the front end of ever sharp pencil upward time pen core The situation dropped from pen core tube.

Although ever sharp pencil disclosed in patent documentation 2 be can solve the problem that child etc. swallow by mistake percussion parts this The pencil of ever sharp pencil problem disclosed in patent documentation 1, but whenever generation, pen core must be filled into pen Open during necessity in core pipe and tap the lid of parts and Guan Bi taps parts again after the filling of pen core Lid, thus with patent documentation 1 disclosed in ever sharp pencil carry out troublesome pen core filling similarly, the presence of having to The such inconvenience of operation.It addition, in this ever sharp pencil, in the situation that the lid tapping parts the most reliably closes Under, exist user by the front end of ever sharp pencil upward time tap the lid of parts and open thus pen core is from pen core The situation that pipe drops.

Then, the problem of the present invention is for providing a kind of ever sharp pencil, it is not necessary to tap relative to pen core tube dismounting Parts or opening and closing tap the such operation of lid of parts, it is possible to filled in pen core tube by pen core simply, And tap the state of affairs of parts by preventing child etc. from swallowing by mistake, it is possible to increase safety, and, user By the front end of ever sharp pencil upward in the case of, it is possible to prevent pen core from dropping from pen core tube.

The first invention according to the application, available a kind of ever sharp pencil, it is characterised in that

Possess: urceolus；

Pen core tube, it is accommodated in described urceolus, can receive pen core in inside；

Delivering mechanism, in it is accommodated in described urceolus and is connected, by described with the leading section of described pen core tube Described pen core in pen core tube is forwards sent；

Tap parts, in it is assemblied in the rearward end of described urceolus sliding freely and with described pen core tube Rearward end connects, and is used for making described delivering mechanism work；And

Guiding parts, it is assemblied in the inside of described percussion parts sliding freely, has the described pen core of acceptance And the pen core passage guided to described pen core tube,

At described guiding parts, it is single by stoping that the described pen core being provided with in the described pen core passage of prevention passes through Unit,

This ever sharp pencil is formed as, and is advanced in described percussion parts by described guiding parts mobile, described By stop unit release described pen core in described pen core passage by stoping.

The second invention according to the application, in addition to the structure of the ever sharp pencil related to except above-mentioned first invention, The position of the front in described guiding parts, is provided with as described by stoping the bullet of unit function Property sheet,

This ever sharp pencil is formed as, and under the normality of described guiding parts, described flexure strip makes described pen core lead to Road is narrower than the diameter of described pen core, thus stops passing through of described pen core, by described guiding parts described Advancing in tapping parts mobile, described flexure strip makes the described pen core passage enlarged-diameter than described pen core, from And release described pen core by stop.

According to the application the 3rd invention, in addition to the structure of the ever sharp pencil related to except above-mentioned second invention, The leading section of described percussion parts, is provided with the connection being attached described pen core passage and described pen core tube and leads to Road,

Described flexure strip is positioned at the immediately rear of the described interface channel of described percussion parts, is formed as stoping institute State pen core movement between described interface channel and described pen core passage.

According to the application the 4th invention, in addition to the structure of the ever sharp pencil related to except above-mentioned 3rd invention, Position near described interface channel in described percussion parts, is provided with the expansion making described flexure strip deform and promotes Unit, in order to along with the advance of described guiding parts is moved, expands described pen core passage.

According to the application the 5th invention, in addition to the structure of the ever sharp pencil related to except above-mentioned second invention, The leading section of described percussion parts, is provided with the narrow maintenance unit of the leading section that can receive described flexure strip,

This ever sharp pencil is formed as, by receiving the front end of described flexure strip in described narrow maintenance unit Portion, the described pen core passage of the leading section of described flexure strip is narrower than the diameter of described pen core.

According to the application the 6th invention, in addition to the structure of the ever sharp pencil related to except above-mentioned 5th invention, should Ever sharp pencil is formed as, along with described guiding parts advances mobile in described percussion parts, and described flexure strip Elastic deformation while described narrow maintenance unit is forwards prominent, expands described pen core passage.

According to the application the 7th invention, except the knot of the ever sharp pencil that above-mentioned first to the 6th arbitrary invention relates to Beyond structure, this ever sharp pencil is formed as, and is moved by the advance of described guiding parts, and described percussion parts exist Advance in described urceolus mobile, thus the work of described delivering mechanism.

The effect of the present invention is as follows.

The present invention is constituted as mentioned above, thus obtains following effect.

That is, according to the present invention, user by the front end of ever sharp pencil upward in the case of, utilization is passed through The pen core in unit prevention pen core tube is stoped to return to the pen core passage of guiding parts, therefore, it is possible to prevent pen core Fall from pen core tube.

It addition, according to the present invention, guiding parts advances in tapping parts and moves thus by by stoping unit Relieve pen core by stop time, pen core can pass, to pen core tube in the pen core passage of guiding parts Mobile.Thus, it is no longer necessary to tap parts for pen core tube dismounting the most like that or opening and closing taps parts Cover such operation, it is possible to filled in pen core tube by pen core simply.Further, it is possible to prevent child etc. from missing Swallow the state of affairs tapping parts, it is possible to increase safety.

7th invention the most also obtains following effect.

That is, according to the 7th invention, it is possible to implemented for releasing by stoping unit to stop pen by one-off Operation that core passes through and for the operation making delivering mechanism work, therefore, it is possible to reduce the trouble of user.

Accompanying drawing explanation

Fig. 1 is to represent the figure that ever sharp pencil that first embodiment of the invention relates to is overall.

Fig. 2 is the axis direction sectional view of ever sharp pencil shown in Fig. 1

Fig. 3 is front portion that represent ever sharp pencil that first embodiment of the invention relates to, that include delivering mechanism The amplification view of side.

Fig. 4 is guiding parts that represent ever sharp pencil that first embodiment of the invention relates to, that include normality The amplification view of rear portion side.

Fig. 5 is the figure tapping parts of the ever sharp pencil representing that first embodiment of the invention relates to, and (a) is The top perspective view of these percussion parts, (b) is along the amplification of these percussion parts of line A-A cutting in (a) Sectional view.

Fig. 6 is the figure of the guiding parts of the ever sharp pencil representing that first embodiment of the invention relates to, and (a) is The amplification plan view of this guiding parts, (b) is the axis direction sectional view of this guiding parts.

Fig. 7 is guiding that represent ever sharp pencil that first embodiment of the invention relates to, that include duty The amplification view of the rear portion side of parts.

Fig. 8 is guiding parts that represent ever sharp pencil that first embodiment of the invention relates to, that include normality The amplification view of rear portion side, be to illustrate that pen core in pen core tube is prevented from returning situation due to flexure strip Figure.

Fig. 9 is the variation of the first embodiment, is the putting of rear portion side representing the guiding parts including normality Big sectional view.

Figure 10 is the variation of the first embodiment, is the rear portion representing the guiding parts including duty The amplification view of side.

Figure 11 is to represent the axis direction section view that ever sharp pencil that second embodiment of the invention relates to is overall Figure.

Figure 12 is guide part that represent ever sharp pencil that second embodiment of the invention relates to, that include normality The amplification view of the rear portion side of part.

Figure 13 is to represent ever sharp pencil that second embodiment of the invention relates to, leading of including duty Amplification view to the rear portion side of parts.

Figure 14 is guide part that represent ever sharp pencil that second embodiment of the invention relates to, that include normality The amplification view of the rear portion side of part, is to illustrate that pen core in pen core tube is prevented from returning situation due to flexure strip Figure.

In figure:

1-urceolus, 2-beam barrel, 3-precentrum, 4-pen core tube, 5-delivering mechanism, 6,6v-tap Parts, 7,7v, 9-guiding parts, the front tip part of 30-precentrum, the paracone of 30a, 30b-precentrum The end difference in portion, the bar portion of 32-precentrum, 34-slide block, the tube body of 40-pen core tube, 42-pen core The linking part of pipe, the pilot hole of 44-pen core tube, the circular protrusion of 46-pen core tube, stopping of 48-pen core tube Dynamic hole, 50-sleeve, 52-chuck, the tubular body of 52a-chuck, the holding piece of 52b-chuck, 54 -chuck bunching ring, 56-chuck spring, 60-taps the urceolus of parts and is inserted into portion, and 62-taps parts Pen core tube be inserted into portion, 63-taps the open-work of parts, and 64-taps the elastic card stator of parts, 64a The locking projection of-percussion parts, 65-taps the Medial extrusion of parts, and 65a-taps the inner side of parts The bearing surface of protuberance, 66-through hole, 67-taps the interface channel of parts, and 69-taps outside parts Side protuberance, the pen core passage of 70-guiding parts, the rear side guide part of 72-guiding parts, 72a-leads To the receiving port of parts, the front side guide part of 74-guiding parts, the otch of 74a-guiding parts, 76- The flexure strip of guiding parts, the protrusion of the flexure strip of 76a-guiding parts, the elasticity of 76b-guiding parts The sliding surface of sheet, the locking projection of the flexure strip of 76c-guiding parts, 77-back-moving spring, 80-guides The front side guide part of parts, the flexure strip of 81-guiding parts, the protuberance of the flexure strip of 81a-guiding parts Portion, the sliding surface of the flexure strip of 81b-guiding parts, the locking projection of 81c-guiding parts, 82-guides The elongated portion of parts, the locking projection of 82a-elongated portion, the pen core passage of 90-guiding parts, 92-leads To the rear side guide part of parts, the receiving port of 92a-guiding parts, the front side guide part of 94-guiding parts, The flexure strip of 96-guiding parts, the bellying of 96a-flexure strip, L-pen core.

Detailed description of the invention

Hereinafter, for the present invention, with reference to illustrating the attached of the present invention is not carried out any restriction embodiment Figure, is described in detail.And, in the present invention, relative to the axis direction of ever sharp pencil, pen core quilt It is " front end " that delivering mechanism sends side, and its opposition side is " rear end ".

(the first embodiment)

Herein, with reference to Fig. 1～Fig. 8, the composition of the ever sharp pencil related to for first embodiment of the invention is entered Row explanation.

As it is shown in figure 1, the urceolus 1 of ever sharp pencil that first embodiment of the invention relates to is squeezed into by use The hollow that the elongated beam barrel 2 of the cross section general triangular of type fabrication techniques is connected with the leading section of beam barrel 2 Precentrum 3 both parts of shape is constituted.And, this urceolus 1 can be formed as including beam barrel 2 and inner cone The one-body molded product of body 3.It addition, the cross section shape of beam barrel 2 is not limited to triangle, it is possible to be formed as round Shape, ellipse, quadrangle and other are variously-shaped.

As shown in FIG. 2 and 3, the inside at beam barrel 2 is provided with the pen core that can receive multiple pen core L Pipe 4 and the leading section with pen core tube 4 are connected and by sending that the pen core L in pen core tube 4 forwards sends Mechanism 5.It addition, in the rearward end of pen core tube 4, connect and have the cylindrical shape for making delivering mechanism 5 work Percussion parts 6.Further, in tapping parts 6, it is inserted with guiding parts 7, this guiding parts 7 shape Become and have the pen core passage 70 accepting pen core L and guiding to pen core tube 4.

Precentrum 3 has front tip part 30 that profile is substantially circular cone shape and rearward extends from front tip part 30 The bar portion 32 of tubulose.In the front tip part 30 of precentrum 3, go out with the front opening from front tip part 30 Enter the slide block 34 that mode freely is accommodated with the tubular of the pen core L that holding is sent from delivering mechanism 5.

At the inner peripheral surface at position of the forward end of front tip part 30, it is formed with the ladder extended in a circumferential direction Portion 30a.It addition, the inner peripheral surface at the position held rearward at front tip part 30, it is also formed with end difference 30b. In inserting slide block 34 along with the pen core L that sends from delivering mechanism 5 and forwards lean out, slide block 34 and pen Core L the most forwards slides movement, prominent to outside from the open front of front tip part 30.Slide block 34 to The slip in front is moved through the end difference 30a of the front tip part 30 of the rearward end abutting precentrum 3 of slide block 34 And stop.

Delivering mechanism 5 has sleeve 50, chuck 52, chuck bunching ring 54, chuck spring 56.

Sleeve 50 is formed as double-sleeve structure.The precentrum 3 rearward end press-in sleeve 50 by bar portion 32 Dual pipe between and be connected with sleeve 50.

Chuck 52 have elongated tubular body 52a and from this tubular body 52a forwards extend multiple Holding piece 52b.The leading section of each holding piece 52b is formed as bloating outward to footpath.Chuck 52 is with clamping The leading section of sheet 52b is inserted in the inner side of sleeve 50 sliding freely from the state that sleeve 50 forwards highlights In pipe.

In the outside of the leading section of holding piece 52b, chimeric have chuck bunching ring 54, makes holding piece 52b's Leading section to footpath inwardly side constriction.It addition, than chuck bunching ring 54 position rearward in holding piece 52b Put, be provided with the chuck spring 56 formed by helical spring, by this chuck spring 56 to chuck 52 and Pen core tube 4 is the most afterburning.

In the rearward end of the tubular body 52a of chuck 52, it is linked with pen core tube 4.Pen core tube 4 has length The tube body 40 of shape tubular and linking part 42, this tube body 40 has the external diameter less than the internal diameter of beam barrel 2, And having the inner space that can receive many pen core L, this linking part 42 is from the front end of tube body 40 Forwards extend, be formed as the external diameter tubular less than tube body 40.By making the linking part 42 of pen core tube 4 It is fitted in the rearward end of tubular body 52a of chuck 52, thus pen core tube 4 links with chuck 52.

In the leading section of tube body 40, it is formed with the most through pilot hole 44.This pilot hole The diameter of 44 is formed to be slightly larger than the diameter of pen core L.The multiple pen core L mono-being accommodated in tube body 40 A piece ground enters pilot hole 44, supplies the tubular body 52a to chuck 52.In the rearward end of tube body 40, It is equipped with the percussion parts 6 for making delivering mechanism 5 work.

If user presses percussion, parts 6 make it move to the front extreme direction of urceolus 1, the most interconnected chuck 52 and pen core tube 4 make chuck spring 56 compression while forwards move.Now, it is entrenched in by making The chuck bunching ring 54 of the leading section of holding piece 52b abuts the end difference 30b of front tip part 30 thus stops moving Dynamic so that the leading section of holding piece 52b forwards highlights from chuck bunching ring 54.Thus, holding piece 52b Leading section discharge from the constraint of chuck bunching ring 54 and expand, thus allow to supply to the pen of chuck 52 Core L sends to slide block 34.Then, user is repeated the percussion operation for tapping parts 6 so that Pen core L inserts in slide block 34, makes slide block 34 forwards slide movement, before the opening from precentrum 3 Distal process is prominent from the front end of slide block 34 while going out.In this condition, user can take down notes.

In order to be filled in the pen core L in the tube body 40 of pen core tube 4, pen core from external view confirmation At least tube body 40 of pipe 4 is preferably formed by transparent plastic material.It addition, the pipe master of pen core tube 4 The inner peripheral surface at the position of the forward end of body 40, is provided with the circular protrusion 46 extended in a circumferential direction.This ring Electrostatic that shape projection 46 is carried due to the tube body 40 of pen core tube 4 for preventing pen core L and be attached to pipe In the peripheral wall surfaces of main body 40.

Here, with reference to Fig. 4, at the perisporium of the rearward end of tube body 40, at the circumferencial direction around its perisporium It is provided with multiple stop hole 48(separated at substantially equal intervals in the present embodiment, is provided with two stop Hole 48).As it has been described above, the rearward end of the tube body 40 at pen core tube 4, it is equipped with the percussion of cylindrical shape Parts 6.As shown in FIG. 4 and 5, these percussion parts 6 have the rear end of the beam barrel 2 inserting urceolus 1 Pen core tube quilt in the rearward end of the tube body 40 that the urceolus in portion is inserted into portion 60 and insertion pen core tube 4 Insertion section 62.Urceolus is inserted into portion 60 to be possessed and is slightly less than beam barrel 2 internal diameter and slightly larger than the pipe of pen core tube 4 The external diameter of main body 40 external diameter.It addition, the inner circumferential of the urceolus leading section that is inserted into portion 60 be formed from front end to Rear expanding for end difference or cone shape wide diameter portion 61(with reference to Fig. 5 (b)).Pen core tube is inserted into portion 62 are inserted into the front end in portion 60 from urceolus forwards extends, and has the tube body being slightly less than pen core tube 4 The external diameter of 40 internal diameters.

It is inserted into portion 62 at the pen core tube tapping parts 6, is formed with interval at the circumferencial direction around its perisporium The multiple elongated open-work 63 at of substantially equal interval.This open-work 63 and the tube body 40 being located at pen core tube 4 Stop hole 48 be provided with equal number (in the present embodiment, being provided with two open-works 63).It addition, The pen core tube tapping parts 6 is inserted into portion 62, is provided with what the forward edge from each open-work 63 rearward extended Elastic card stator 64, the free end at this elastic card stator 64 is provided with the foreign side the most prominent to footpath and dashes forward Play 64a.As shown in Fig. 4 and Fig. 5 (b), the biggest in pen core tube is inserted into the front bulkhead in portion 62 Cause the position of central authorities, be formed with the most through through hole 66, be formed from through hole 66 The Medial extrusion 65 that rear end periphery rearward highlights with tubulose.By this through hole 66 and Medial extrusion The inner peripheral surface of 65, marks off the pen core passage 70 to guiding parts 7 described later and pen core tube 4 is attached Interface channel 67.This interface channel 67 is formed to be slightly larger than the diameter of pen core L.It addition, at interior pleurapophysis Go out the periphery in portion 65, be formed the most expanding for cone shape bearing surface 65a from rear end.And, as Hereinafter described, Medial extrusion 65 promotes unit function as expansion, i.e. make guiding parts 7 Flexure strip 76 deforms, thus expands pen core along with the advance of the guiding parts 7 tapped in parts 6 is moved Passage 70.

Tap parts 6 as constructed as above and be assemblied in pen core tube 4 with following state, i.e. pen core tube is inserted into portion 62 insert in tube body 40 from the open rearward end portion of the tube body 40 of pen core tube 4, and urceolus is inserted into portion 60 Front end face abut the rear end face of tube body 40 of pen core tube 4 and urceolus be inserted into the rearward end in portion 60 from The rear end of beam barrel 2 is rearward prominent (with reference to Fig. 4).The state of pen core tube 4 it is assemblied at percussion parts 6 Under, foreign side's projection 64a of the elastic card stator 64 tapping parts 6 inserts the stop hole 48 of pen core tube 4, The rear end face of foreign side's projection 64a is engaging in the back edge of stop hole 48, thus stop percussion parts 6 from Pen core tube 4 departs from.

In tapping parts 6, the guiding parts 7 having cylindrical shape inserted as described above.Such as Fig. 4 and Fig. 6 Shown in, divide in the inside of guiding parts 7 and have the most through pen core passage 70.Guide part Part 7 can substantially divide into the rear side guide part 72 at position on rear side of formation and be formed on front side of the front side at position lead To portion 74.In the rear end of rear side guide part 72, it is provided with for making pen core passage 70 accept connecing of pen core L By mouth 72a.In order to make pen core L fit easily in pen core passage 70, the inner peripheral surface of this receiving port 72a in It is now from front end until the expanding taper surface in rear end.The internal diameter of rear side guide part 72 namely rear side guide part In 72, the diameter of pen core passage 70 is formed larger than the diameter of pen core L.It addition, rear side guide part 72 External diameter is formed as slightly smaller than tapping the urceolus of parts 6 and is inserted into the internal diameter in portion 60.Front side guide part 74 is from rear The front end of side guide part 72 extends the most continuously.It addition, the external diameter of front side guide part 74 is formed as less than The external diameter of rear side guide part 72.

Guiding parts 7 has multiple flexure strip 76 in the position of its front.Flexure strip 76 is as stoping pen In core passage 70 pen core L pass through by stop unit function.As shown in Figure 6, present embodiment The guiding parts 7 related to has a pair flexure strip 76, this flexure strip 76 at front side guide part 74 along axle Line direction is formed with two otch 74a, and relative to the central axis symmetry of guiding parts 7 and radially Upper relative.This flexure strip 76 is elongated and is formed as cross section substantially arc-shaped.It addition, such as Fig. 6 (b) Shown in, in the inner circumferential of the leading section of each flexure strip 76, form side's protuberance in oriented radial direction in a circumferential direction Protrusion 76a.Further, the front end face of the protrusion 76a of each flexure strip 76 is constituted from its front end backward Side's undergauge is the sliding surface 76b of cone-shaped.Further, at each flexure strip 76, it is provided with the position held rearward from it Periphery towards prominent locking projection 76c of radial direction foreign side.The internal diameter of front side guide part 74 namely front side In guide part 74, to be formed as the part rearward of the rear end than protrusion 76a bigger for the diameter of pen core passage 70 Diameter in pen core L.

Guiding parts 7 is inserted into the opening in portion 60 by guide part on front side of it 74 from the urceolus tapping parts 6 Rear end is inserted in urceolus is inserted into portion 60 and is assembled sliding freely relative to percussion parts 6.About assembling In the guiding parts 7 of percussion parts 6, the sliding surface 76b of flexure strip 76 is positioned at the inner side tapping parts 6 Near the bearing surface 65a of protuberance 65, locking projection 76c is inserted pen core tube and is inserted into the open-work in portion 62 63。

It addition, be assemblied in the rearward end of the rear side guide part 72 of the guiding parts 7 tapping parts 6 from percussion The open rearward end of parts 6 rearward highlights.It addition, the rear end face card of locking projection 76c of guiding parts 7 The urceolus being scheduled on percussion parts 6 is inserted into the front end face in portion 60, thus prevents guiding parts 7 from percussion Parts 6 depart from.The rear end face of locking projection 76c of guiding parts 7 like this is engaging in and taps parts 6 It is the normality being assemblied in the guiding parts 7 tapping parts 6 that urceolus is inserted into the state of the front end face in portion 60. It addition, under the normality of guiding parts 7, a pair flexure strip 76 is formed as between its relative protrusion 76a Interval less than the diameter of pen core L.

As described above by precentrum 3, slide block 34, pen core tube 4, delivering mechanism 5, tap parts 6 and guiding parts 7 be combined into one, these parts constituent components (unit).Being configured with this assembly The side of guiding parts 7 is inserted in beam barrel 2 from the front end opening of beam barrel 2, by the bar portion of precentrum 3 32 press-ins or screw engagement are to the leading section of beam barrel 2, thus assemble and obtain what the first embodiment related to The finished product of ever sharp pencil.

Then, illustrate for pen core L filling in pen core tube 4.At the guide part shown in Fig. 4 Under the normality of part 7, as it has been described above, the sliding surface 76b of the leading section of two flexure strips 76 is positioned at percussion portion Near the bearing surface 65a of the Medial extrusion 65 of part 6, the relative interval between protrusion 76a is less than pen The diameter of core L.Under the normality of this guiding parts 7, user makes the front end court of the urceolus 1 of ever sharp pencil Downwards, from the receiving port 72a of guiding parts 7, pen core L is put into pen core passage 70, then pen core L Pen core passage 70 falls.The leading section of this pen core L in rear side guide part 72 across and into front In side guide part 74, but abut with the protrusion 76a of two flexure strips 76.It is, pen core L Owing to protrusion 76a is prevented from falling, rest between two flexure strips 76.Therefore, pen core L is by bullet Property sheet 76 stop further in pen core passage 70 fall, so being not able to move to pen core tube 4.

User forwards presses the rearward end of rear side guide part 72 of guiding parts 7 in this condition, the most such as Shown in Fig. 7, guiding parts 7 is tapping in parts 6 movement of forwards sliding.When guiding parts 7 is tapping Forwards slide in parts 6 mobile ormal weight from its normal orientation, and the sliding surface 76b of the most each flexure strip 76 supports Meet the bearing surface 65a of the Medial extrusion 65 tapping parts 6, this bearing surface 65a forwards slides Mobile.Then, two flexure strips 76 are respectively facing protrusion 76a detaching direction, namely footpath outward Bending.Become guiding parts 7 like this in the state tapping the ormal weight that advanced in parts 6 from its normal orientation After (hereinafter referred to as " duty "), the interval between the protrusion 76a of two flexure strips 76 is more than pen core The diameter of L.After guiding parts 7 becomes duty like this, due to the protrusion 76a of flexure strip 76 And rest on the pen core L in pen core passage 70 and be extended through as two flexure strips 76 more than pen core L diameter Protrusion 76a between, via tap parts 6 interface channel 67 fall to pen core tube 4.

So after pen core tube 4 fills pen core L, if user releases the pressing for guiding parts 7, Then guiding parts 7 returns normality from duty.Describing in detail, user releases for guiding parts 7 Pressing, then two flexure strip 76 elastic deformations, reset movement is to normality.It is, expanded two Individual flexure strip 76 is inwardly side's elastic deformation, reset towards protrusion 76a direction closer to each other, namely footpath Mobile to normality.Along with the elastic deformation of two flexure strips 76, guiding parts 7 in tapping parts 6 to Rear slide moves so that the sliding surface 76b of the leading section of flexure strip 76 is tapping the interior pleurapophysis of parts 6 Go out and rearward slide on the bearing surface 65a in portion 65, simultaneously supporting from the Medial extrusion 65 of percussion parts 6 Junction 65a rearward leaves (with reference to Fig. 8).Guiding parts 7 like this is tapping in parts 6 rearward Sliding mobile, the rear end face of locking projection 76c of guiding parts 7 is engaging in the urceolus of percussion parts 6 and is inserted Entering the front end face in portion 60, guiding parts 7 resets towards normality.Under the normality of guiding parts 7, elastic Interval between the relative protrusion 76a of sheet 76 is less than the diameter of pen core L as described above.Therefore, exist The front end of the urceolus 1 of ever sharp pencil is by the case of upward, though pen core tube 4 as shown in Figure 8 Interior pen core L enters the interface channel 67 tapping parts 6, also due to the rear end of pen core L abuts each bullet The sliding surface 76b of property sheet 76 thus can not enter between relative protrusion 76a, therefore pen core L can not Return to the pen core passage 70 of guiding parts 7.Such that make the front end of the urceolus 1 of ever sharp pencil by court Upward, it is also possible to prevent the pen core L being filled in pen core tube 4 from falling.

And, the ever sharp pencil that the present invention relates to can use the pen core with various diameter to be apparent , especially in the case of using the such thick pen core L of such as diameter 0.9mm or 1.3mm, can To be filled into as described below for this pen core in pen core tube 4.It is, from the receiving port 72a of guiding parts 7 The front end of the pen core L putting into pen core passage 70 is stoped by the protrusion 76a of flexure strip 76 as described above Movement to pen core tube 4 direction so that pen core L rests in pen core passage 70, and end is from leading behind (with reference to Fig. 4) in the case of the receiving port 72a of parts 7 is the most prominent, user can forwards press Press the rearward end of this pen core L.If user forwards presses the rearward end of pen core L, then this pen core L Expand outward to footpath between the protrusion 76a of two flexure strips 76 of leading section entrance and with protrusion 76a The mode opened makes two flexure strips 76 bend, and is clamped between two protrusion 76a.Two protrusion 76a Chucking power be set as following degree: allow pen core L to utilize user that pen core is pressed against two protrusions Slide between 76a and move to pen core tube 4, but not allowing pen core L owing to deadweight is to pen core tube 4 side To whereabouts.Therefore, user can slide between the protrusion 76a of two flexure strips 76 making pen core, Can be pressed into from pen the most prominent for the receiving port 72a of guiding parts 7 to the inside of guiding parts 7 simultaneously The rearward end of core L.If with the rearward end of this status user pressing guiding parts 7, then guiding parts 7 Operating as described above, pen core is supplied to pen core tube.

Then, the mutual action of chuck 52, pen core tube 4, percussion parts 6 and guiding parts 7 is divided into The situation of chuck spring 56 elastic force " elastic force of (1) flexure strip 76 more than " and " (2) flexure strip 76 Elastic force is less than the situation of chuck spring 56 elastic force " it is described in detail following.

(1) elastic force of flexure strip 76 is more than the situation of chuck spring 56 elastic force

When the rearward end of guiding parts 7 is forwards pressed, first, pen core tube 4 makes chuck spring 56 press Contracting, is simultaneously directed to parts 7, percussion parts 6, pen core tube 4 and chuck 52 and is integrally forming at urceolus 1 Inside advance mobile.Utilizing this advance to move, the holding piece 52b of chuck 52 is from chuck bunching ring 54 Forwards highlight and expand.When the rearward end of guiding parts 7 is by side's pressing further along, guiding parts 7 Advance mobile, outside the flexure strip 76 of guiding parts 7 described above is radially oriented in the inside tapping parts 6 Side's bending.

(2) elastic force of flexure strip 76 is less than the situation of chuck spring 56 elastic force

When the rearward end of guiding parts 7 is forwards pressed, first, guiding parts 7 is tapping parts 6 Inside advance mobile, the flexure strip 76 of guiding parts 7 described above is radially oriented foreign side's bending.Guide When the rearward end of parts 7 is by side's pressing further along, pen core tube 4 makes chuck spring 56 compress, simultaneously It is mobile that guiding parts 7, percussion parts 6, pen core tube 4 and chuck 52 are integrally forming advance.Before utilizing this Entering movement, the holding piece 52b of chuck 52 is forwards prominent from chuck bunching ring 54 and expands.

By making guiding parts 7 like this, tapping parts 6, pen core tube 4 and the mutual action of chuck 52, Can implement to be used for releasing flexure strip 76(by stoping unit by one-off) stop pen core L to pass through Operation and for making the operation that delivering mechanism 5 work, therefore, it is possible to the trouble of minimizing user.

And, carrying out repeatedly pressing operation, the flexibility decrease of result flexure strip 76 for guiding parts 7 In the case of causing guiding parts 7 to be likely no longer able to be reset to normality, can arrange in ever sharp pencil For being directed to the back-moving spring that parts 7 rearward push back.About this back-moving spring, real described later first Execute in mode variation and describe in detail.

As it has been described above, according to present embodiment, in the case of user makes the front end of ever sharp pencil upward, Pen core L in pen core tube 4 by flexure strip 76(by stoping unit) stop to the pen core of guiding parts 7 Passage 70 returns, it is possible to prevent pen core L from falling from pen core tube 4.

It addition, guiding parts 7 advances mobile in tapping parts 6 and flexure strip 76(is single by stoping Unit) relieve pen core L by stop time, pen core L passes in the pen core passage 70 of guiding parts 7, Can move to pen core tube 4.Therefore, according to present embodiment, it is no longer necessary to the most like that for pen core tube Dismounting taps parts or the such operation of lid of opening and closing percussion parts, it is possible to simply by pen core L to pen Fill in core pipe 4.Further, it is possible to prevent child etc. from swallowing the state of affairs tapping parts 6 by mistake, it is possible to increase peace Quan Xing.

And, in ever sharp pencil of the present embodiment, in order to efficiently it be assembled, by front Cone 3, slide block 34, pen core tube 4, delivering mechanism 5, percussion parts 6 and guiding parts 7 are combined as Integrally carrying out constituent components, this assembly is combined with beam barrel 2.But, it is not limited to want above-mentioned composition Element is combined to be configured to the situation of assembly, it is also possible to otherwise assemble the dnockout core lead that the present invention relates to Pen.

(variation of the first embodiment)

Fig. 9 and Figure 10 is the figure representing the first embodiment variation.In this variation, guide part The front side guide part of part is different from the front side guide part of the first embodiment shown in Fig. 1～Fig. 8, and other are constituted Part is constituted in the same manner as the first embodiment.Therefore, for the structure of variation shown in Fig. 9 and Figure 10 Become composition part same with the constituting portion split-phase of the first embodiment in part, give and reference shown in Fig. 1～8 The reference marks that symbol is identical, for they not repeat specification.

It is different from the front side guide part 74 of the guiding parts 7 of the first embodiment, shown in Fig. 9 and Figure 10 The front side guide part 80 of guiding parts 7v has an elasticity of the cross section forwards extended substantially arc-shaped Sheet 81 and than flexure strip 81 short and that forwards the extend cross section diametrically opposed with flexure strip 81 are big Cause the elongated portion 82 of arc-shaped.

In the inner side of the leading section of flexure strip 81, the protrusion 81a of square protuberance in forming oriented radial direction.Separately Outward, the protrusion 81a of flexure strip 81 front end face constitute from front end rearward undergauge be cone shape slip Face 81b.The inner curve of flexure strip 81 with protrusion 81a from rear end rearward and between elongated portion 82 The mode that is gradually increased of interval expanding.It addition, the periphery at the position held rearward at flexure strip 81, if Locking projection 81c that oriented footpath is prominent outward.

The following function of elongated portion 82 of guiding parts 7v: at pen core L from pen core passage 70 to percussion Pen core L is guided by the way that the interface channel 67 of parts 6 moves.The inner curve of elongated portion 82 Be formed as internal diameter substantially stationary.Under the normality of guiding parts 7v shown in Fig. 9, the front end of elongated portion 82 with Flexure strip 81 is formed as the basic phase with the diameter of pen core L with the gap between this front end opposite site Deng.The locking raised 82a the most prominent to footpath it also is provided with in the periphery of the rearward end of elongated portion 82.

About being assemblied in the guiding parts 7v tapping parts 6, locking projection 81c of flexure strip 81 and stretching The pen core tube of the locking projection 82a insertion percussion parts 6 in long portion is inserted into the open-work 63 in portion 62.It addition, Guiding parts 7v front side guide part 80 and tap parts 6 urceolus be inserted between portion 60 ring-type In space, it is configured with the back-moving spring 77 formed by helical spring.In other words, before guiding parts 7v The periphery of side guide part 80 is chimeric is provided with back-moving spring 77.Further, dashed forward by the locking of flexure strip 81 The rear end face playing the rear end face of 81c and locking projection 82a of elongated portion is engaging in the urceolus tapping parts 6 It is inserted into the front end face in portion 60, thus guiding parts 7v is prevented from coming off from percussion parts 6.It addition, close It is positioned at Medial extrusion in being assemblied in the guiding parts 7v, the sliding surface 81b of flexure strip 81 tapping parts 6 Near the bearing surface 65a of 65, the protrusion 81a of flexure strip 81 compares the inner peripheral surface of Medial extrusion 65 It is positioned at inwardly side, footpath.

Then, in variation in pen core tube 4 fill pen core L illustrate.Leading shown in Fig. 9 Under the normality of parts 7v, in the front end of elongated portion 82 and flexure strip 81 with this front end opposite site it Between gap be set as of substantially equal with the diameter of pen core L.It addition, the sliding surface 81b position of flexure strip 81 Near the bearing surface 65a of Medial extrusion 65 tapping parts 6, and, the protrusion of flexure strip 81 81a compares the inner peripheral surface of Medial extrusion 65 and is positioned at inwardly side, footpath.Under the normality of this guiding parts 7v, User makes the front end of the urceolus 1 of ever sharp pencil downward, from the receiving port 72a of guiding parts 7v by pen Core L puts into pen core passage 70, then the leading section of pen core L falls in pen core passage 70, at rear side Across and in front side guide part 80 in guide part 72.But, due to front end and the bullet of elongated portion 82 In property sheet 81 and between this front end opposite site gap is set as of substantially equal with the diameter of pen core L, So pen core L is sandwiched between flexure strip 81 and elongated portion 82, it is prevented from falling.Therefore, pen core L Can not fall in pen core passage 70 further, it is impossible to move to pen core tube 4.

User forwards presses the rearward end of rear side guide part 72 of guiding parts 7v in this condition, the most such as Shown in Figure 10, guiding parts 7v makes back-moving spring 77 compress, and forwards slides in tapping parts 6 Dynamic mobile.When guiding parts 7v is tapping the mobile ormal weight that forwards slides in parts 6 from its normal orientation, The sliding surface 81b of flexure strip 81 abuts the bearing surface 65a of the Medial extrusion 65 tapping parts 6, at this Forwards slide on bearing surface 65a movement.Then, flexure strip 81 is radially oriented foreign side with protrusion 81a Mode bend.Become guiding parts 7v like this to move from its normal orientation slip in tapping parts 6 After the duty of ormal weight, the protrusion 81a of flexure strip 81 compare the inner circumferential of Medial extrusion 65 towards Footpath retreats outward, between the front end of elongated portion 82 with in flexure strip 81 and that this front end is relative position The gap diameter more than pen core L.Therefore, after guiding parts 7v becomes duty, due to flexure strip 81 Rest on the pen core L in pen core passage 70 through flexure strip 81 and elongated portion 82, via percussion portion The interface channel 67 of part 6 falls to pen core tube 4.

So after pen core tube 4 fills pen core L, if user releases the pressing for guiding parts 7v, Then guiding parts 7v returns normality from duty.Describing in detail, user releases for guiding parts The pressing of 7v, then guiding parts 7v is owing to the active force of back-moving spring 77 is tapping in parts 6 rearward Slip movement, the rear end face of locking projection 81c of flexure strip 81 and locking projection 82a of elongated portion Rear end face abuts to be engaging in and taps the urceolus of parts 6 and be inserted into the front end face in portion 60.Guiding parts 7v is striking Hitting parts 6 interior when rear slide moves, flexure strip 81 rearward moves so that the front end of flexure strip 81 The sliding surface 81b in portion rearward slides shifting on the bearing surface 65a of Medial extrusion 65 tapping parts 6 Dynamic, the bearing surface 65a from the Medial extrusion 65 tapping parts 6 rearward leaves simultaneously.Followed at this, The protrusion 81a of flexure strip 81 enters in the way of the inner peripheral surface comparing Medial extrusion 65 is positioned at inwardly side, footpath Row elastic deformation, is reset to normality.Thus, in the front end of urceolus 1 of ever sharp pencil by feelings upward Under condition, even if the pen core L in pen core tube 4 enters the interface channel 67 tapping parts 6, also due to pen The rear end of core L abuts the sliding surface 81b of flexure strip 81, and therefore pen core L can not be to the pen of guiding parts 7v Core passage 70 returns.Such that make the front end of the urceolus 1 of ever sharp pencil by upward, it is also possible to anti- The pen core L being only filled in pen core tube 4 falls.

Then, the mutual action of chuck 52, pen core tube 4, percussion parts 6 and guiding parts 7v is divided For " elastic force of (1) back-moving spring 77 is more than the situation of chuck spring 56 elastic force " and " (2) back-moving spring The elastic force of 77 is less than the situation of chuck spring 56 elastic force " it is described in detail following.

(1) elastic force of back-moving spring 77 is more than the situation of chuck spring 56 elastic force

When the rearward end of guiding parts 7v is forwards pressed, first, pen core tube 4 makes chuck spring 56 Compression, is simultaneously directed to parts 7v, percussion parts 6, pen core tube 4 and chuck 52 and is integrally forming at urceolus The inside of 1 is advanced mobile.Utilizing this advance to move, the holding piece 52b of chuck 52 is from chuck bunching ring 54 Forwards highlight and expand.When the rearward end of guiding parts 7v is by side's pressing further along, guiding parts 7v makes back-moving spring 77 compress, and advances mobile in the inside tapping parts 6, guide part described above simultaneously The flexure strip 81 of part 7v is radially oriented foreign side's bending.

(2) elastic force of back-moving spring 77 is less than the situation of chuck spring 56 elastic force

When the rearward end of guiding parts 7v is forwards pressed, first, guiding parts 7v makes back-moving spring 77 compressions, advance mobile in the inside tapping parts 6, the flexure strip of guiding parts 7v described above simultaneously 81 are radially oriented foreign side's bending.When the rearward end of guiding parts 7v is by side's pressing further along, pen core tube 4 make chuck spring 56 compress, and are simultaneously directed to parts 7v, tap parts 6, pen core tube 4 and chuck 52 It is integrally forming advance mobile.Utilizing this advance to move, the holding piece 52b of chuck 52 is from chuck bunching ring 54 Forwards highlight and expand.

By making guiding parts 7v like this, tapping parts 6, pen core tube 4 and the mutual action of chuck 52, Can implement to be used for releasing flexure strip 76(by stoping unit by one-off) stop pen core L to pass through Operation and for making the operation that delivering mechanism 5 work, therefore, it is possible to the trouble of minimizing user.

And, back-moving spring 77 is: after the pressing of guiding parts 7v is released from by user, by will be by The guiding parts 7v pushing percussion duty within parts 6 rearward pushes back, and contributes to footpath outside The flexure strip 81 of side's bending carries out elastic deformation thus is reset to normality.But, have at flexure strip 81 and make The guiding parts 7v of duty rearward returns and can be reset to the feelings of elastic force of original state degree Under condition, not necessarily there is the necessity arranging back-moving spring 77 in ever sharp pencil.But, due to many The secondary pressing operation result that carries out guiding parts 7v causes the elastic force decline of flexure strip 81 to make guiding parts In the case of 7v likely can not be reset to normality again, back-moving spring 77 is preferably set in ever sharp pencil.

(the second embodiment)

Figure 11～Figure 14 is the figure of the ever sharp pencil representing that second embodiment of the invention relates to.Except using From the first embodiment tap parts different tap parts and with the guiding parts of the first embodiment not Outside same these aspects of guiding parts, this embodiment and the first embodiment are similarly constituted.Therefore, Composition part with the first embodiment is constituted in part for the second embodiment shown in Figure 11～Figure 14 Identical composition part, gives the reference marks identical with reference marks shown in Fig. 1～8, does not weighs for them Multiple explanation.

In the first embodiment, be provided with from the pen core tube tapping parts 6 be inserted into the front bulkhead in portion 62 to Tap the Medial extrusion 65 that the rear of parts 6 is prominent.To this, as shown in figure 12, the second embodiment party In formula, replace Medial extrusion 65, be provided with the front end being inserted into portion 62 from the pen core tube tapping parts 6v Forwards prominent portion protruding outside 69.This portion 69 protruding outside is formed as the cylindrical shape in front openings. It has been inserted into guiding parts 9 tapping parts 6v, the flexure strip 96 hereinafter described of this guiding parts 9 Leading section is inserted and is tapped the pen core tube of parts 6v and be inserted into the through hole 66 in portion 62.

In the guiding parts 7 that the first embodiment relates to, rear side guide part 72 and front side guide part 74 Form as one.To this, in the guiding parts 9 that the second embodiment relates to, rear side guide part 92 with Front side guide part 94 is formed separately, and on rear side of these, guide part 92 is combined with front side guide part 94.Tool Body ground, by being pressed into the rearward end of front side guide part 94 or screw engagement is to before rear side guide part 92 In end, on rear side of these, guide part 92 and front side guide part 94 are combined into one, and constitute guiding parts 9. Divide in the inside of guiding parts 9 and have the most through pen core passage 90.At rear side guide part The rear end of 92, is provided with the receiving port 92a accepting pen core L for pen core passage 90.For ease of by pen core L puts into pen core passage 90, and the inner peripheral surface of this receiving port 92a is rendered as the cone of the forwards undergauge from rear end Shape face.

The front side guide part 94 of guiding parts 9 has multiple flexure strip 96 in the position of its toe lateral.Elastic Sheet 96, as by stoping unit function, i.e. stops pen core L at pen under the normality of guiding parts 9 Move between core pipe 4 and pen core passage 90.Guiding parts 9 of the present embodiment has a pair elasticity Sheet 96, this flexure strip 96 is by forming two otch 94a along axis direction on front side guide part 94 Formed, symmetrical and diametrically opposed relative to the central axis of front side guide part 94.It addition, In the periphery of the leading section of each flexure strip 96, form that oriented radial direction foreign side bloats in a circumferential direction bloats Portion 96a.The size of the internal diameter tapping the portion protruding outside 69 of parts 6v is set as this portion 69 protruding outside Can accept the bellying 96a both sides of two flexure strips 96, but tap the through hole 66 of parts 6v Internal diameter be set as not allowing the bellying 96a both sides of two flexure strips 96 through through hole 66, compare outside The size that the internal diameter of protuberance 69 is little.Under the normality of the percussion parts 6v shown in Figure 12, a pair elastic The bellying 96a of sheet 96 is entrenched in the lateral process tapping parts 6v with the state being narrowed down the most respectively Go out in portion 69.On the other hand, under the duty of the percussion parts 6v shown in Figure 13, a pair elastic The bellying 96a of sheet 96 is to carry out elastic deformation in the way of footpath is the most separated from one another, from tapping parts The portion protruding outside 69 of 6v forwards highlights.

Therefore, portion 69 protruding outside, as narrow maintenance unit function, is i.e. tapping the normal of parts 6v Receive the leading section of flexure strip 96 under state and make pen core passage 90 part between this leading section be narrower than pen core L Diameter.Specifically, under the normality of the guiding parts 9 shown in Figure 12, as it has been described above, a pair elastic The bellying 96a of sheet 96 is entrenched in the portion protruding outside 69 tapping parts 6v, the phase of bellying 96a Pen core passage 90 part between gap between opposite, the namely bellying 96a diameter less than pen core L. On the other hand, at the bellying 96a of a pair flexure strip 96 as shown in Figure 13 from tapping parts 6v When side protuberance 69 forwards highlights, a pair flexure strip 96 elastic deformation so that bellying 96a's is relative The gap between the face diameter more than L.

It is inserted between portion 60 at the front side guide part 94 of guiding parts 9 and the urceolus of percussion parts 6v In annulus, it is configured with the back-moving spring 77 formed by helical spring.In other words, this back-moving spring 77 The periphery of the chimeric front side guide part 94 being arranged on guiding parts 9.Back-moving spring 77 is always to guiding parts 9 entirety are the most afterburning, and under the normality of guiding parts 9, the rearward end of rear side guide part 92 is from percussion The open rearward end of parts 6 rearward highlights.It addition, under the normality tapping parts 6v, a pair flexure strip The bellying 96a of 96 can not pass in the through hole 66 tapping parts 6v, but is engaging in percussion portion The front bulkhead of part 6v, so preventing guiding parts 9 to depart from from tapping parts 6v.

Then, pen core L filling in pen core tube 4 in the ever sharp pencil related to for the second embodiment Illustrate.Under the normality of guiding parts 9 shown in Figure 12, as it has been described above, the drum of a pair flexure strip 96 Go out portion 96a to be embedded in the portion protruding outside 69 tapping parts 6v, interval between the opposite face of bellying 96a, Namely pen core passage 90 part between bellying 96a is compared the diameter of pen core L and is narrowed down.In this guiding Under the normality of parts 9, user makes the front end of the urceolus 1 of ever sharp pencil downward, from guiding parts 9 Receiving port 92a pen core L is put into pen core passage 90, then pen core L falls in pen core passage 90. The leading section of this pen core L in rear side guide part 92 across and in front side guide part 94, but by Interval between the bellying 96a of two flexure strips 96 is narrower than the diameter of pen core L as mentioned above, so not Can pass between bellying 96a, but rest on than bellying 96a position rearward.It is, pen Core L is sandwiched between two flexure strips 96, is prevented from falling.Therefore, pen core L is hindered by flexure strip 96 Fall in pen core passage 90 the most further, so can not move to pen core tube 4.

User forwards presses the rearward end of rear side guide part 92 of guiding parts 9 in this condition, the most such as Shown in Figure 13, guiding parts 9 makes back-moving spring 77 compress, and forwards slides in tapping parts 6v simultaneously Dynamic mobile.When guiding parts 9 is tapping the mobile ormal weight that forwards slides in parts 6v from its normal orientation, Then the bellying 96a of a pair flexure strip 96 forwards highlights from the portion protruding outside 69 tapping parts 6v, Discharge from the constraint in the portion protruding outside 69 tapping parts 6v.Specifically, a pair flexure strip 96 is elastic Deformation so that it is the opposite face of bellying 96a detaching direction toward each other, namely footpath are outward.Like this Become guiding parts 9 and move the work of ormal weight tapping forwards to slide from its normal orientation in parts 6v After state, the diameter more than pen core L of the gap between the opposite face of the bellying 96a of a pair flexure strip 96. Therefore, after guiding parts 9 becomes duty, rest on pen core passage 90 due to flexure strip 96 Interior pen core L passes between the opposite face of two flexure strips 96, falls to pen core tube 4.

So after pen core tube 4 fills pen core L, if user releases the pressing for guiding parts 9, Then guiding parts 9 returns normality from duty.Describe in detail, if user releases for guiding parts The pressing of 9, then make guiding parts 9 tapping in parts 6v backward due to the active force of back-moving spring 77 Side slides mobile.Along with guiding parts 9 moves to rear slide in tapping parts 6v, a pair flexure strip The bellying 96a of 96 and portion protruding outside 69 sliding contact tapping parts 6v retreat movement simultaneously.Change Yan Zhi, a pair flexure strip 96 is entered by its bellying 96a in the portion protruding outside 69 tapping parts 6v Thus it is elastic in the way of the opposite face direction of closing toward each other of its bellying 96a, namely footpath inwardly side Deformation, is reset to normality.Under the normality of guiding parts 9, the relative interval between bellying 96a is as above The described diameter less than pen core L.Therefore, even if will live after in pen core L is filled in pen core tube 4 Upward, the rear end of pen core L abuts elasticity the most as shown in Figure 14 in the front end of the urceolus 1 of pencil The front end of sheet 96, it is impossible to enter between relative bellying 96a, so pen core L can not be to guiding parts The pen core passage 90 of 9 returns.

As it has been described above, according to present embodiment, in the case of user makes the front end of ever sharp pencil upward, Pen core L in pen core tube 4 by flexure strip 96(by stoping unit) stop to the pen core of guiding parts 9 Passage 90 returns, it is possible to prevent pen core L from falling from pen core tube 4.

It addition, guiding parts 9 advances mobile in tapping parts 6v and flexure strip 96(is single by stoping Unit) relieve pen core L by stop time, pen core L passes in the pen core passage 90 of guiding parts 9, Can move to pen core tube 4, so being no longer necessary to tap parts for pen core tube dismounting or open the most like that Close the such operation of lid tapping parts.It addition, can simply pen core L be filled in pen core tube 4, Further, it is possible to prevent child etc. from swallowing the state of affairs tapping parts 6v by mistake, it is possible to increase safety.

And, use specific embodiment to be illustrated for the present invention, but the present invention is not limited to Those embodiments, within the scope of without departing from idea of the invention, it is possible to apply above-mentioned embodiment Various changes and correction are apparent from.Such as, for the present invention, for having machine of specifically sending The embodiment of the ever sharp pencil of structure is illustrated, but the present invention sends machine as being not limited to have The ever sharp pencil of structure, it is also possible to be applicable to replace it and the dnockout core with known any suitable delivering mechanism Pencil.

Claims

1. an ever sharp pencil, it is characterised in that

Possess: urceolus；

Pen core tube, it is accommodated in described urceolus, and can receive pen core in inside；

Ever sharp pencil the most according to claim 1, it is characterised in that

The position of the front in described guiding parts, is provided with as described by stoping unit function Flexure strip,

Ever sharp pencil the most according to claim 2, it is characterised in that

In the leading section of described percussion parts, it is provided with and described pen core passage and described pen core tube are attached Interface channel,

Ever sharp pencil the most according to claim 3, it is characterised in that

Position near described interface channel in described percussion parts, is provided with and makes described flexure strip deform Expansion promotes unit, in order to along with the advance of described guiding parts is moved, expand described pen core passage.

Ever sharp pencil the most according to claim 2, it is characterised in that

In the leading section of described percussion parts, it is provided with the narrow maintenance of the leading section that can receive described flexure strip Unit,

Ever sharp pencil the most according to claim 5, it is characterised in that

This ever sharp pencil is formed as, along with described guiding parts advances mobile in described percussion parts, described Flexure strip is elastic deformation while described narrow maintenance unit is forwards prominent, expands described pen core passage.

7. according to the ever sharp pencil according to any one of claim 1～6, it is characterised in that

This ever sharp pencil is formed as, and is moved by the advance of described guiding parts, and described percussion parts are described Advance in urceolus mobile, thus the work of described delivering mechanism.