CN103692821A - Ever sharp pencil - Google Patents
Ever sharp pencil Download PDFInfo
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- CN103692821A CN103692821A CN201310435809.2A CN201310435809A CN103692821A CN 103692821 A CN103692821 A CN 103692821A CN 201310435809 A CN201310435809 A CN 201310435809A CN 103692821 A CN103692821 A CN 103692821A
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- pen core
- parts
- guiding parts
- flexure strip
- sharp pencil
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Abstract
The present invention provides an ever sharp pencil which can fill refill into a refill tube simply and can avoid the refill droping from the refill tube, which increases the security. The ever sharp pencil comprises: a outer tub (1); a refill tube (4),stored in the outer tube (1) and storing the refill (L); a send agency (5), connecting with the front end of the refill tube (4) and sending forward the refill (L) of the refill tube (4); a knocking component (6), installed on the rear-end of the outer tub (1) and connecting with the rear-end of the refill tube (4); and a guidance component (7),installed inside of the knocking component (6) and possessing a refill channel (70) which can accept the refill (L) guiding to the refill tube (4). The guidance component (7) is provided with a flexure strip (76) to prevent the refill (L) of the refill channel (70) passing. Through the guidance component moving forward inside of the knocking component, the flexure strip relieves the prevent invention of the refill (L) of the refill channel from passing.
Description
Technical field
The present invention relates to can be to the ever sharp pencil of filling pen core in pen core tube.
Background technology
In the past, as ever sharp pencil, the pen core tube that knownly there is urceolus, is accommodated in pen core delivering mechanism in this urceolus, is accommodated in urceolus and links with the rear portion of pen core delivering mechanism and be accommodated in urceolus and rearward outstanding state dismounting is assemblied in the ever sharp pencil that knocks parts (with reference to patent documentation 1) of the open rearward end portion of pen core tube freely from the rear end of urceolus with rearward end.
The parts that knock that in the open rearward end portion of the pen core tube of this existing ever sharp pencil, dismounting is assembled are freely for making the parts of pen core delivering mechanism work, even user by the front end of ever sharp pencil towards top, also in order to prevent that the pen core being once filled in pen core tube from dropping from pen core tube, and rear end is stopped up.This knocks parts due to pen core will removed from pen core tube when the open rearward end portion of pen core tube is filled in pen core tube, thus exist children wait by this disassembling from pen core tube knock parts swallow by mistake and get lodged in throat is asphyxiant may.For this reason, in patent documentation 1, the disclosed parts that knock have passage, even if children etc. will knock parts, swallow by mistake and get lodged in throat, thereby also can guarantee that ventilation prevents from suffocating.
In addition, also propose to have and knocking parts and be provided with the ever sharp pencil (with reference to patent documentation 2) of the lid that can open and close.
Prior art document
Patent documentation
Patent documentation 1: Japanese kokai publication hei 9-71090
Patent documentation 2: Japanese kokai publication hei 8-156382
Summary of the invention
The problem that invention will solve
But the disclosed ever sharp pencil of patent documentation 1 is not to prevent from knocking parts self to be waited the pencil of swallowing by children by mistake.Therefore,, even even if this knocks parts has children from this viewpoint of security and wait and to swallow and to get lodged in throat and also can prevent the passage suffocating by mistake, it neither guarantee the pencil of security completely.In addition, the parts that knock of this ever sharp pencil must be being again assemblied on pen core tube from pen core tube dismounting the filling at pen core whenever producing when pen core is filled into the necessity in pen core tube, so there is the such inconvenience of pen core filling operation of having to carry out trouble.And, in this ever sharp pencil, there is the situation of knocking loss of parts disassemble from pen core tube, in this case, the situation that exists user that the front end of ever sharp pencil pen core when the top is dropped from pen core tube.
Although the disclosed ever sharp pencil of patent documentation 2 is can solve children etc. to swallow the pencil that knocks the disclosed ever sharp pencil problem of this patent documentation 1 of parts by mistake, but must whenever produce open when pen core is filled into the necessity in pen core tube knock the lid of parts the filling at pen core after the closed lid that knocks parts again, so similarly exist and have to carry out the such inconvenience of the pen core filling operation of trouble with the disclosed ever sharp pencil of patent documentation 1.In addition, in this ever sharp pencil, in the situation that the lid that knocks parts reliably closing not, thereby the lid that exists user the front end of ever sharp pencil to be knocked to parts when the top is opened the situation that pen core drops from pen core tube.
So, problem of the present invention is for providing a kind of ever sharp pencil, need to not knock the such operation of lid that parts are knocked in parts or switching with respect to pen core tube dismounting, can simply pen core be filled in pen core tube, and by prevent that children etc. from swallowing the state of affairs of knocking parts by mistake, can improve security, and, in the situation that user by the front end of ever sharp pencil towards above, can prevent that pen core from dropping from pen core tube.
The first invention according to the application, can obtain a kind of ever sharp pencil, it is characterized in that,
Possess: urceolus;
Pen core tube, it is accommodated in described urceolus, in inside, can take in pen core;
Delivering mechanism, it is accommodated in described urceolus and is connected with the leading section of described pen core tube, and the described pen core in described pen core tube is forwards sent;
Knock parts, it is assemblied in sliding freely in the rearward end of described urceolus and is connected with the rearward end of described pen core tube, for making described delivering mechanism work; And
Guiding parts, the inside that it knocks parts described in being assemblied in sliding freely, has and accepts described pen core and to the pen core passage of described pen core tube guiding,
At described guiding parts, what be provided with that the described pen core that stops in described pen core passage passes through pass through prevention unit,
This ever sharp pencil forms, and by described guiding parts, described, knocks the movement of advancing in parts, described by stoping unit to remove the prevention of pass through of described pen core in described pen core passage.
According to the second invention of the application, except the structure of above-mentioned the first ever sharp pencil of relating to of invention, the position of the front in described guiding parts, is provided with as described by stoping the flexure strip of unit performance function,
This ever sharp pencil forms, under the normality of described guiding parts, described flexure strip makes described pen core passage narrower than the diameter of described pen core, thereby stop passing through of described pen core, by described guiding parts, described, knock the movement of advancing in parts, described flexure strip makes described pen core passage than the enlarged-diameter of described pen core, thereby removes the prevention of passing through of described pen core.
According to the application the 3rd invention, the structure of the ever sharp pencil relating to except above-mentioned the second invention, at the described leading section that knocks parts, be provided with the interface channel that described pen core passage is connected with described pen core tube,
Described in described flexure strip is positioned at, knock the tight rear of the described interface channel of parts, form and stop the movement of described pen core between described interface channel and described pen core passage.
According to the application's the 4th invention, except the structure of above-mentioned the 3rd ever sharp pencil that relates to of invention, near the position described described interface channel knocking in parts, be provided with the expansion promotion unit that makes described flexure strip distortion, so that along with the movement of advancing of described guiding parts, expand described pen core passage.
According to the application the 5th invention, the structure of the ever sharp pencil relating to except above-mentioned the second invention, at the described leading section that knocks parts, be provided with the narrow unit that maintains of the leading section that can take in described flexure strip,
This ever sharp pencil forms, and by the described narrow leading section of taking in described flexure strip in maintaining unit, 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's the 6th invention, except the structure of above-mentioned the 5th ever sharp pencil that relates to of invention, this ever sharp pencil forms, along with described guiding parts knocks described the movement of advancing in parts, described flexure strip, from the described narrow unit strain forwards outstanding time that maintains, expands described pen core passage.
According to the application's the 7th invention, the structure of the ever sharp pencil relating to except above-mentioned first to the 6th arbitrary invention, this ever sharp pencil forms, by the movement of advancing of described guiding parts, describedly knock the parts movement of advancing in described urceolus, thus described delivering mechanism work.
Effect of the present invention is as follows.
The present invention forms as mentioned above, thereby obtains following effect.
That is, according to the present invention, in the situation that user by the front end of ever sharp pencil towards above, utilize by stoping unit to stop pen core in pen core tube to return to the pen core passage of guiding parts, therefore can prevent that pen core from falling from pen core tube.
In addition, according to the present invention, thereby guiding parts in knocking parts, advance mobile by by stop unit removed pen core pass through prevention time, pen core can pass in the pen core passage of guiding parts, to pen core tube, moves.Thus, no longer need in the past like that for pen core tube dismounting to knock the such operation of lid that parts are knocked in parts or switching, can simply pen core be filled in pen core tube.And, can prevent that children etc. from swallowing the state of affairs of knocking parts by mistake, can improve security.
The 7th invention also obtains following effect except above-mentioned effect.
That is,, according to the 7th invention, can implement for removing by stoping unit to stop operation that pen core passes through and for making the operation of delivering mechanism work by one-off, so can reduce user's trouble.
Accompanying drawing explanation
Fig. 1 means the figure of the ever sharp pencil integral body that first embodiment of the invention relates to.
Fig. 2 is the axis direction cutaway view of ever sharp pencil shown in Fig. 1
Fig. 3 means the amplification view of toe lateral ever sharp pencil, that comprise delivering mechanism that first embodiment of the invention relates to.
Fig. 4 means the amplification view of the rear portion side of guiding parts ever sharp pencil, that comprise normality that first embodiment of the invention relates to.
Fig. 5 means the figure that knocks parts of the ever sharp pencil that first embodiment of the invention relates to, and is (a) this enlarged drawing of overlooking that knocks parts, is (b) that this that dissect along A-A line in (a) knocks the amplification view of parts.
Fig. 6 means the figure of the guiding parts of the ever sharp pencil that first embodiment of the invention relates to, and is (a) amplification plan view of this guiding parts, is (b) the axis direction cutaway view of this guiding parts.
Fig. 7 means the amplification view of the rear portion side of guiding parts ever sharp pencil, that comprise duty that first embodiment of the invention relates to.
Fig. 8 means the amplification view of the rear portion side of guiding parts ever sharp pencil, that comprise normality that first embodiment of the invention relates to, and is the pen core of explanation in pen core tube because flexure strip is prevented from returning the figure of situation.
Fig. 9 is the variation of the first embodiment, means the amplification view of the rear portion side of the guiding parts that comprises normality.
Figure 10 is the variation of the first embodiment, means the amplification view of the rear portion side of the guiding parts that comprises duty.
Figure 11 means the axis direction cutaway view of the ever sharp pencil integral body that second embodiment of the invention relates to.
Figure 12 means the amplification view of the rear portion side of guiding parts ever sharp pencil, that comprise normality that second embodiment of the invention relates to.
Figure 13 means the amplification view of the rear portion side of guiding parts ever sharp pencil, that comprise duty that second embodiment of the invention relates to.
Figure 14 means the amplification view of the rear portion side of guiding parts ever sharp pencil, that comprise normality that second embodiment of the invention relates to, and is the pen core of explanation in pen core tube because flexure strip is prevented from returning the figure of situation.
In figure:
1-urceolus, 2-beam barrel, 3-precentrum, 4-pen core tube, 5-delivering mechanism, 6, 6v-knocks parts, 7, 7v, 9-guiding parts, the front tip part of 30-precentrum, 30a, the end difference of the front tip part of 30b-precentrum, the bar portion of 32-precentrum, 34-slide block, the tube body of 40-pen core tube, the linking part of 42-pen core tube, the pilot hole of 44-pen core tube, the circular protrusion of 46-pen core tube, the stop hole of 48-pen core tube, 50-sleeve, 52-chuck, the tubular body of 52a-chuck, the holding piece of 52b-chuck, 54-chuck bunching ring, 56-chuck spring, the urceolus that 60-knocks parts is inserted into portion, the pen core tube that 62-knocks parts is inserted into portion, 63-knocks the open-work of parts, 64-knocks the elastic card stator of parts, 64a-knocks the engaging projection of parts, 65-knocks the inner side protuberance of parts, 65a-knocks the bearing surface of the inner side protuberance of parts, 66-through hole, 67-knocks the interface channel of parts, 69-knocks the outside protuberance of parts, the pen core passage of 70-guiding parts, the rear side guide part of 72-guiding parts, the receiving port of 72a-guiding parts, the front side guide part of 74-guiding parts, the otch of 74a-guiding parts, the flexure strip of 76-guiding parts, the protrusion of the flexure strip of 76a-guiding parts, the sliding surface of the flexure strip of 76b-guiding parts, the engaging projection of the flexure strip of 76c-guiding parts, 77-back-moving spring, the front side guide part of 80-guiding parts, the flexure strip of 81-guiding parts, the protrusion of the flexure strip of 81a-guiding parts, the sliding surface of the flexure strip of 81b-guiding parts, the engaging projection of 81c-guiding parts, the elongated portion of 82-guiding parts, the engaging projection of 82a-elongated portion, the pen core passage of 90-guiding parts, the rear side guide part of 92-guiding 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.
The specific embodiment
Below, for the present invention, with reference to having represented the present invention not to be carried out the accompanying drawing of the embodiment of any restriction, be described in detail.And in the present invention, with respect to the axis direction of ever sharp pencil, pen core is sent mechanism and sends a side for " front end ", its opposition side is " rear end ".
(the first embodiment)
Herein, with reference to Fig. 1～Fig. 8, the formation of the ever sharp pencil relating to for first embodiment of the invention describes.
As shown in FIG. 2 and 3, in the inside of beam barrel 2, be provided with and can take in the delivering mechanism 5 that the pen core tube 4 of a plurality of pen core L is connected and the pen core L in pen core tube 4 is forwards sent with leading section with pen core tube 4.In addition, in the rearward end of pen core tube 4, be connected with for making the parts 6 that knock cylindraceous of delivering mechanism 5 work.And, in knocking parts 6, being inserted with guiding parts 7, this guiding parts 7 is formed with the pen core passage 70 of accepting pen core L and guiding to pen core tube 4.
Inner peripheral surface at the position of the forward end of front tip part 30, is formed with the end difference 30a extending in a circumferential direction.In addition, the inner peripheral surface by the position of rear end at front tip part 30, is also formed with end difference 30b.Along with the pen core L sending from delivering mechanism 5 inserts in slide block 34 and forwards leans out, together forwards slip is mobile with pen core L for slide block 34, outstanding to outside from the open front of front tip part 30.Slide block 34 slip forwards move through slide block 34 rearward end butt precentrum 3 front tip part 30 end difference 30a and stop.
A plurality of holding piece 52b that chuck 52 has microscler tubular body 52a and forwards extends from this tubular body 52a.The leading section of each holding piece 52b forms radius vector and bloats to foreign side.Chuck 52 with the leading section of holding piece 52b from sleeve 50 forwards outstanding state be inserted in sliding freely in the inside tube of sleeve 50.
In the outside of the leading section of holding piece 52b, chimeric have a chuck bunching ring 54, makes the inside side's constriction of leading section radius vector of holding piece 52b.In addition, in holding piece 52b, than chuck bunching ring 54, lean on the position at rear, be provided with the chuck spring 56 being formed by helical spring, rearward always afterburning by 56 pairs of chucks 52 of this chuck spring and pen core tube 4.
In the rearward end of the tubular body 52a of chuck 52, link and have pen core tube 4.Pen core tube 4 has tube body 40 and the linking part 42 of microscler tubular, this tube body 40 has the external diameter less than the internal diameter of beam barrel 2, and have the inner space that can take in many pen core L, this linking part 42 forwards extends from the front end of tube body 40, forms the tubular that external diameter is less than tube body 40.By the linking part 42 of pen core tube 4 is fitted in the rearward end of tubular body 52a of chuck 52, thereby pen core tube 4 links with chuck 52.
At the leading section of tube body 40, be formed with the pilot hole 44 connecting on fore-and-aft direction.The diameter of this pilot hole 44 forms the diameter that is a bit larger tham pen core L.A plurality of pen core L that are accommodated in tube body 40 enter pilot hole 44 one by one, are supplied to the tubular body 52a of chuck 52.In the rearward end of tube body 40, be equipped with and knock parts 6 for what make delivering mechanism 5 work.
If user presses and knocks parts 6 its front extreme direction to urceolus 1 is moved, the chuck 52 mutually linking and pen core tube 4 forwards move when making 56 compressions of chuck spring.Now, thereby stop mobilely by making to be entrenched in the end difference 30b of chuck bunching ring 54 butt front tip parts 30 of the leading section of holding piece 52b, make the leading section of holding piece 52b forwards outstanding from chuck bunching ring 54.Thus, the leading section of holding piece 52b is from the approximately intrafascicular release of chuck bunching ring 54 and expand, thereby allows the pen core L that is supplied to chuck 52 to send to slide block 34.Then, user carries out repeatedly for the operation of knocking of knocking parts 6, and pen core L is inserted in slide block 34, slide block 34 is forwards slided mobile, and the front end from slide block 34 when the open front from precentrum 3 is outstanding is outstanding.Under this state, 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 from outside visual confirmation, at least tube body 40 of pen core tube 4 is preferably formed by transparent plastic material.In addition, the inner peripheral surface at the position of the forward end of the tube body 40 of pen core tube 4, is provided with the circular protrusion 46 extending in a circumferential direction.This circular protrusion 46 is attached to the peripheral wall surfaces of tube body 40 for preventing static that pen core L carries due to the tube body 40 of pen core tube 4.
At this, with reference to Fig. 4, at the perisporium of the rearward end of tube body 40, on the circumferencial direction around its perisporium, be provided with roughly equally spaced separated a plurality of stop hole 48(in the present embodiment, be provided with two stop hole 48).As mentioned above, the rearward end at the tube body 40 of pen core tube 4, is equipped with the parts 6 that knock cylindraceous.As shown in FIG. 4 and 5, this knocks parts 6 and has that urceolus in the rearward end of the beam barrel 2 that inserts urceolus 1 is inserted into portion 60 and the pen core tube that inserts in the rearward end of tube body 40 of pen core tube 4 is inserted into portion 62.Urceolus is inserted into the external diameter that portion 60 possesses tube body 40 external diameters that are slightly less than beam barrel 2 internal diameters and are slightly larger than pen core tube 4.In addition, urceolus to be inserted into being formed with in interior week from rearward hole enlargement of front end of leading section of portion 60 be that end difference or cone shape wide diameter portion 61(are with reference to Fig. 5 (b)).Pen core tube is inserted into the front end that portion 62 is inserted into portion 60 from urceolus and forwards extends, and has the external diameter of tube body 40 internal diameters that are slightly less than pen core tube 4.
At the pen core tube that knocks parts 6, be inserted into portion 62, at the circumferencial direction around its perisporium, be formed with a plurality of microscler open-work 63 of the basic equal intervals in interval.This open-work 63 is provided with equal number (in the present embodiment, being provided with two open-works 63) with the stop hole 48 that is located at the tube body 40 of pen core tube 4.In addition, at the pen core tube that knocks parts 6, be inserted into portion 62, be provided with the elastic card stator 64 rearward extending from the forward edge of each open-work 63, at the free end of this elastic card stator 64, be provided with radius vector to the outstanding projection 64a of foreign side of foreign side.As shown in Fig. 4 and Fig. 5 (b), at pen core tube, be inserted in the front bulkhead of portion 62 the radially position of substantial middle, be formed with the through hole 66 connecting on fore-and-aft direction, be formed with from the rear end periphery of through hole 66 rearward with the outstanding inner side protuberance 65 of tubulose.By the inner peripheral surface of this through hole 66 and inner side protuberance 65, mark off the interface channel 67 that the pen core passage 70 of guiding parts 7 described later is connected with pen core tube 4.This interface channel 67 forms the diameter that is a bit larger tham pen core L.In addition, in the periphery of inner side protuberance 65, being formed with the forwards hole enlargement from rear end is cone shape bearing surface 65a.And as mentioned below, inner side protuberance 65 as expansion promotion unit performance function, that is, makes flexure strip 76 distortion of guiding parts 7, thereby along with knocking the mobile pen core passage 70 that expands that advances of the guiding parts 7 in parts 6.
Knock as constructed as above parts 6 and be assemblied in pen core tube 4 with following state,, pen core tube is inserted into portion 62 in the open rearward end portion Inserting Tube main body 40 of the tube body 40 of pen core tube 4, and urceolus is inserted into the rear end face of tube body 40 of front end face butt pen core tube 4 of portion 60 and rearward end that urceolus is inserted into portion 60 from the rear end of beam barrel 2 rearward outstanding (with reference to Fig. 4).Be assemblied under the state of pen core tube 4 knocking parts 6, the projection 64a of foreign side that knocks the elastic card stator 64 of parts 6 inserts the stop hole 48 of pen core tube 4, the rear end face engaging of the projection 64a of foreign side, at the back edge of stop hole 48, is knocked parts 6 from pen core tube 4 disengagings thereby stop.
In knocking parts 6, be inserted with as mentioned above guiding parts 7 cylindraceous.As shown in Fig. 4 and Fig. 6, in the internal separation of guiding parts 7, there is the pen core passage 70 connecting on fore-and-aft direction.Guiding parts 7 can roughly be divided into the rear side guide part 72 that forms rear side position and the front side guide part 74 that forms position, front side.In the rear end of rear side guide part 72, be provided with for making pen core passage 70 accept the receiving port 72a of pen core L.In order to make pen core L be easy to put into pen core passage 70, the inner peripheral surface of this receiving port 72a is rendered as from front end until the taper surface of rear end hole enlargement.The internal diameter of rear side guide part 72 namely in rear side guide part 72 diameter of pen core passage 70 form the diameter that is greater than pen core L.In addition, the external diameter of rear side guide part 72 forms and is slightly smaller than the internal diameter that the urceolus that knocks parts 6 is inserted into portion 60.Front side guide part 74 forwards extends continuously from the front end of rear side guide part 72.In addition, the external diameter of front side guide part 74 forms the external diameter that is less than rear side guide part 72.
Guiding parts 7 has a plurality of flexure strips 76 in the position of its front.Flexure strip 76 pass through prevention unit performance function as what stop in pen core passage 70 that pen core L passes through.As shown in Figure 6, the guiding parts 7 that present embodiment relates to has a pair of flexure strip 76, and this flexure strip 76 is formed with two otch 74a at front side guide part 74 along axis direction, and symmetrical and diametrically opposed with respect to the central axis of guiding parts 7.This flexure strip 76 is for microscler and to form cross section roughly circular-arc.In addition, as shown in Figure 6 (b), in the interior week of the leading section of each flexure strip 76, be formed with in a circumferential direction the inwardly protrusion 76a of side's protuberance of radius vector.And the front end face of the protrusion 76a of each flexure strip 76 forms from its front end sliding surface 76b that rearward undergauge is cone-shaped.And, at each flexure strip 76, be provided with from its outer peripheral face radius vector by the position of rear end to the outstanding engaging projection 76c of foreign side.The internal diameter of front side guide part 74 namely in front side guide part 74 diameter of pen core passage 70 form and than the rear end of protrusion 76a, by the part at rear, be slightly larger than the diameter of pen core L.
Guiding parts 7 is inserted into portion 60 from knocking the urceolus of parts 6 open rearward end by its front side guide part 74 is inserted urceolus and is inserted into that portion 60 is interior assembles sliding freely with respect to knocking parts 6.About being assemblied in the guiding parts 7 that knocks parts 6, the sliding surface 76b of flexure strip 76 is positioned near the bearing surface 65a of the inner side protuberance 65 that knocks parts 6, and engaging projection 76c inserts the open-work 63 that pen core tube is inserted into portion 62.
In addition, the rearward end that is assemblied in the rear side guide part 72 of the guiding parts 7 that knocks parts 6 is rearward given prominence to from knocking the open rearward end of parts 6.In addition, the rear end face engaging of the engaging projection 76c of guiding parts 7 is inserted into the front end face of portion 60 at the urceolus that knocks parts 6, thereby has stoped guiding parts 7 to depart from from knocking parts 6.At the urceolus that knocks parts 6, to be inserted into the state of the front end face of portion 60 be the normality that is assemblied in the guiding parts 7 that knocks parts 6 in the rear end face engaging of the engaging projection 76c of guiding parts 7 like this.In addition, under the normality of guiding parts 7, a pair of flexure strip 76 forms the diameter that interval between its relative protrusion 76a is less than pen core L.
As described above by precentrum 3, slide block 34, pen core tube 4, delivering mechanism 5, knock parts 6 and guiding parts 7 is combined into one, these parts constituent components (unit).A side that disposes guiding parts 7 of this assembly is inserted in beam barrel 2 from the front end opening of beam barrel 2, the bar portion 32 of precentrum 3 is pressed into or screw engagement to the leading section of beam barrel 2, thereby assembling obtains the finished product of the ever sharp pencil that the first embodiment relates to.
Then, for pen core L, to the filling in pen core tube 4, describe.Under the normality of the guiding parts 7 shown in Fig. 4, as mentioned above, the sliding surface 76b of the leading section of two flexure strips 76 is positioned near the bearing surface 65a of the inner side protuberance 65 that knocks parts 6, and the interval between relative protrusion 76a is less than the diameter of pen core L.Under the normality of this guiding parts 7, user make ever sharp pencil urceolus 1 front end downward, from the receiving port 72a of guiding parts 7, pen core L is put into pen core passage 70, pen core L falls in pen core passage 70.The leading section of this pen core L in rear side guide part 72 across and in front side guide part 74, but with the protrusion 76a butt of two flexure strips 76.Namely, pen core L, because protrusion 76a is prevented from, rests between two flexure strips 76.Therefore, pen core L is stoped further to fall in pen core passage 70 by flexure strip 76, so can not move to pen core tube 4.
Under this state, user forwards presses the rearward end of the rear side guide part 72 of guiding parts 7, and as shown in Figure 7, guiding parts 7 forwards slides mobile in knocking parts 6.When guiding parts 7 is knocking the mobile ormal weight that forwards slides from normality position in parts 6, the sliding surface 76b butt of each flexure strip 76 knocks the bearing surface 65a of the inner side protuberance 65 of parts 6, forwards slides mobile on this bearing surface 65a.Then, two flexure strips 76 are respectively towards protrusion 76a detaching direction, namely radially foreign side's bending.Become like this guiding parts 7 in knocking parts 6 from the state (hereinafter referred to as " duty ") of ormal weight has been advanced in normality position, the interval between the protrusion 76a of two flexure strips 76 is greater than the diameter of pen core L.Guiding parts 7 becomes after duty like this, because the protrusion 76a of flexure strip 76 rests on pen core L in pen core passage 70 through expanding between the protrusion 76a of two flexure strips 76 that are greater than pen core L diameter, via the interface channel 67 that knocks parts 6, to pen core tube 4, fall.
To pen core tube 4, fill after pen core L like this, if user removes for the pressing of guiding parts 7, guiding parts 7 returns to normality from duty.Narrate in detail, user removes for the pressing of guiding parts 7, two flexure strip 76 strains, and reset movement is to normality.Namely, two flexure strips 76 that expanded are towards protrusion 76a direction closer to each other, the inside side's strain in footpath namely, and reset movement is to normality.Strain along with two flexure strips 76, guiding parts 7 rearward slides mobile in knocking parts 6, the sliding surface 76b of the leading section of flexure strip 76 is rearward slided on the bearing surface 65a of inner side protuberance 65 that knocks parts 6, from knocking the bearing surface 65a of the inner side protuberance 65 of parts 6, rearward leave (with reference to Fig. 8) simultaneously.Guiding parts 7 rearward slides and moves in knocking parts 6 like this, and the rear end face engaging of the engaging projection 76c of guiding parts 7 is inserted into the front end face of portion 60 at the urceolus that knocks parts 6, and guiding parts 7 resets towards normality.Under the normality of guiding parts 7, the interval between the relative protrusion 76a of flexure strip 76 is less than the diameter of pen core L as described above.Therefore, in the situation that the front end of the urceolus 1 of ever sharp pencil by towards above, even if the pen core L in pen core tube 4 has entered the interface channel 67 that knocks parts 6 as shown in Figure 8, also thereby the sliding surface 76b due to each flexure strip 76 of rear end butt of pen core L can not enter between relative protrusion 76a, so pen core L can not return to the pen core passage 70 of guiding parts 7.Like this, even if the pen core L that the front end of the urceolus of ever sharp pencil 1 by towards top, also can prevent from being filled in pen core tube 4 falls.
And it is apparent that the ever sharp pencil the present invention relates to can be used the pen core with various diameters, especially in the situation that use for example diameter 0.9mm or the so thick pen core L of 1.3mm, can be filled in pen core tube 4 this pen core is as described below.Namely, from the receiving port 72a of guiding parts 7, put into the front end movement to pen core tube 4 directions by the protrusion 76a of flexure strip 76 prevention as described above of the pen core L of pen core passage 70, pen core L is rested in pen core passage 70, portion is from the receiving port 72a of guiding parts 7 rearward (with reference to Fig. 4) outstanding situation in its back-end, and user can forwards press the rearward end of this pen core L.If user forwards presses the rearward end of pen core L, the leading section of this pen core L enters between the protrusion 76a of two flexure strips 76 and the mode expanding to foreign side with protrusion 76a radius vector makes two flexure strip 76 bendings, is clamped between two protrusion 76a.The chucking power of two protrusion 76a is set as following degree: allow pen core L to utilize user to the sliding between two protrusion 76a and move to pen core tube 4 by being pressed in of pen core, but do not allow pen core L because deadweight is fallen to pen core tube 4 directions.Therefore, user can slide between the protrusion 76a that makes pen core at two flexure strips 76, can to the inside of guiding parts 7, be pressed into from the rearward end of the outstanding pen core L of the receiving port 72aXiang foreign side of guiding parts 7 simultaneously.If press the rearward end of guiding parts 7 with this state user, guiding parts 7 is worked as described above, and pen core offers pen core tube.
Then, chuck 52, pen core tube 4, the mutual action of knocking parts 6 and guiding parts 7 are divided into " elastic force of (1) flexure strip 76 is greater than the situation of chuck spring 56 elastic force " and " elastic force of (2) flexure strip 76 is less than the situation of chuck spring 56 elastic force " described in detail below.
(1) elastic force of flexure strip 76 is greater 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 compression, simultaneously guiding parts 7, knock the movement of advancing in the inside of urceolus 1 that becomes one of parts 6, pen core tube 4 and chuck 52.Utilize this movement of advancing, the holding piece 52b of chuck 52 forwards gives prominence to and expands from chuck bunching ring 54.When the rearward end of guiding parts 7 is further forwards pressed, guiding parts 7 movement of advancing in the inside of knocking parts 6, the flexure strip 76 of guiding parts 7 is towards radially foreign side is crooked as mentioned above.
(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 movement of advancing in the inside of knocking parts 6, the flexure strip 76 of guiding parts 7 is towards radially foreign side is crooked as mentioned above.When the rearward end of guiding parts 7 is further forwards pressed, pen core tube 4 makes chuck spring 56 compression, simultaneously guiding parts 7, knock the movement of advancing that becomes one of parts 6, pen core tube 4 and chuck 52.Utilize this movement of advancing, the holding piece 52b of chuck 52 forwards gives prominence to and expands from chuck bunching ring 54.
By making like this guiding parts 7, knock parts 6, pen core tube 4 and chuck 52 move mutually, can implement to be used for to remove flexure strip 76(by stoping unit by one-off) stop operation that pen core L passes through and for making the operation of delivering mechanism 5 work, therefore can reduce user's trouble.
And, for guiding parts 7, carrying out repeatedly pressing operation, the flexibility decrease of result flexure strip 76 causes guiding parts 7 likely no longer can be reset in the situation of normality, can in ever sharp pencil, be provided for the back-moving spring that guiding parts 7 is rearward pushed back.About this back-moving spring, in the first embodiment variation described later, describe in detail.
As mentioned above, according to present embodiment, in the situation that the front end that user makes ever sharp pencil towards above, the pen core L in pen core tube 4 by flexure strip 76(by stoping unit) stop to the pen core passage 70 of guiding parts 7 and return, so can prevent that pen core L from falling from pen core tube 4.
In addition, guiding parts 7 advances mobile and flexure strip 76(by stoping unit in knocking parts 6) removed pen core L pass through prevention 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, no longer need in the past like that for pen core tube dismounting to knock the such operation of lid that parts are knocked in parts or switching, can be simply by pen core L to the interior filling of pen core tube 4.And, can prevent that children etc. from swallowing the state of affairs of knocking parts 6 by mistake, can improve security.
And, in the ever sharp pencil relating in present embodiment, in order efficiently it to be assembled, by precentrum 3, slide block 34, pen core tube 4, delivering mechanism 5, knock parts 6 and guiding parts 7 is combined into one constituent components, this assembly and beam barrel 2 combine.But, be not defined as the situation that above-mentioned inscape is combined to be configured to assembly, also can otherwise assemble the ever sharp pencil the present invention relates to.
(variation of the first embodiment)
Fig. 9 and Figure 10 mean the figure of the first embodiment variation.In this variation, the front side guide part of guiding parts is different from the front side guide part of the first embodiment shown in Fig. 1～Fig. 8, and other component parts and the first embodiment similarly form.Therefore, the component part identical with the component part of the first embodiment in the component part for variation shown in Fig. 9 and Figure 10, gives the reference marks identical with reference marks shown in Fig. 1～8, for they not repeat specification.
The front side guide part 74 that is different from the guiding parts 7 of the first embodiment, the front side guide part 80 of guiding parts 7v shown in Fig. 9 and Figure 10 have forwards the cross section of extending roughly a circular-arc flexure strip 81 and with diametrically opposed ratio flexure strip 81 cross section short and that forwards extend of flexure strip 81 circular-arc elongated portion 82 roughly.
In the inner side of the leading section of flexure strip 81, be formed with the inwardly protrusion 81a of side's protuberance of radius vector.In addition, the front end face of the protrusion 81a of flexure strip 81 form from front end rearward undergauge be cone shape sliding surface 81b.The inner curve of flexure strip 81 is with the mode hole enlargement that the interval rearward and between elongated portion 82 increases gradually from rear end of protrusion 81a.In addition, the periphery by the position of rear end at flexure strip 81, is provided with radius vector to the outstanding engaging projection 81c of foreign side.
The following performance function of elongated portion 82 of guiding parts 7v: the way of moving to the interface channel 67 that knocks parts 6 from pen core passage 70 at pen core L, pen core L is guided.It is substantially fixing that the inner curve of elongated portion 82 forms internal diameter.Under the normality of the 7v of guiding parts shown in Fig. 9, the front end of elongated portion 82 forms with the diameter of pen core L and substantially equates with gap between position relative to this front end in flexure strip 81.Periphery in the rearward end of elongated portion 82 is also provided with radius vector to the outstanding engaging projection 82a of foreign side.
About being assemblied in the guiding parts 7v that knocks parts 6, the engaging projection 82a of the engaging projection 81c of flexure strip 81 and elongated portion inserts the open-work 63 that the pen core tube knock parts 6 is inserted into portion 62.In addition, at the front side of guiding parts 7v guide part 80 and the urceolus that knocks parts 6, be inserted in the annulus between portion 60, dispose the back-moving spring 77 being formed by helical spring.In other words, at the chimeric back-moving spring 77 that is provided with of periphery of the front side of guiding parts 7v guide part 80.And, by the rear end face of engaging projection 81c of flexure strip 81 and the rear end face engaging of the engaging projection 82a of elongated portion, at the urceolus that knocks parts 6, be inserted into the front end face of portion 60, thereby guiding parts 7v is prevented from coming off from knocking parts 6.In addition, about being assemblied in the guiding parts 7v that knocks parts 6, the sliding surface 81b of flexure strip 81 is positioned near the bearing surface 65a of inner side protuberance 65, and the inner peripheral surface that the protrusion 81a of flexure strip 81 compares inner side protuberance 65 is positioned at inwardly side, footpath.
Then, for describing to the interior filling pen core of pen core tube 4 L in variation.Under the normality of the 7v of guiding parts shown in Fig. 9, the front end of elongated portion 82 is set as substantially equating with the diameter of pen core L with the gap between position relative to this front end in flexure strip 81.In addition, the sliding surface 81b of flexure strip 81 is positioned near the bearing surface 65a of the inner side protuberance 65 that knocks parts 6, and the inner peripheral surface that the protrusion 81a of flexure strip 81 compares inner side protuberance 65 is positioned at inwardly side, footpath.Under the normality of this guiding parts 7v, user make ever sharp pencil urceolus 1 front end downward, from the receiving port 72a of guiding parts 7v, pen core L is put into pen core passage 70, the leading section of pen core L is in the interior whereabouts of pen core passage 70, in rear side guide part 72 across and in front side guide part 80.But, because the front end of elongated portion 82 is set as substantially equating with the diameter of pen core L with the gap between position relative to this front end in flexure strip 81, so pen core L is sandwiched between flexure strip 81 and elongated portion 82, be prevented from.Therefore, pen core L can not, further in the interior whereabouts of pen core passage 70, can not move to pen core tube 4.
Under this state, user forwards presses the rearward end of the rear side guide part 72 of guiding parts 7v, and as shown in figure 10, guiding parts 7v makes back-moving spring 77 compressions, and it is mobile in knocking parts 6, forwards to slide.When guiding parts 7v is knocking the mobile ormal weight that forwards slides from normality position in parts 6, the sliding surface 81b butt of flexure strip 81 knocks the bearing surface 65a of the inner side protuberance 65 of parts 6, forwards slides mobile on this bearing surface 65a.Then, flexure strip 81 is crooked towards the mode of foreign side radially with protrusion 81a.Become like this guiding parts 7v slides and has moved the duty of ormal weight from normality position in knocking parts 6, the inner peripheral surface radius vector that the protrusion 81a of flexure strip 81 compares inner side protuberance 65 retreats to foreign side, and the front end of elongated portion 82 and the gap between the position relative with this front end in flexure strip 81 are greater than the diameter of pen core L.Therefore, guiding parts 7v becomes after duty, and the pen core L resting in pen core passage 70 due to flexure strip 81 passes between flexure strip 81 and elongated portion 82, via the interface channel 67 that knocks parts 6, to pen core tube 4, falls.
To pen core tube 4, fill after pen core L like this, if user removes for the pressing of guiding parts 7v, guiding parts 7v returns to normality from duty.Narrate in detail, user removes pressing for guiding parts 7v, guiding parts 7v is because the active force of back-moving spring 77 rearward slides and moves in knocking parts 6, and the rear end face butt engaging of the rear end face of the engaging projection 81c of flexure strip 81 and the engaging projection 82a of elongated portion is inserted into the front end face of portion 60 at the urceolus that knocks parts 6.Guiding parts 7v rearward slides while moving in knocking parts 6, flexure strip 81 rearward moves, make the sliding surface 81b of the leading section of flexure strip 81 rearward slide and move on the bearing surface 65a of inner side protuberance 65 that knocks parts 6, from knocking the bearing surface 65a of the inner side protuberance 65 of parts 6, rearward leave simultaneously.In this, the protrusion 81a of flexure strip 81 is positioned at the mode of inside side, footpath and carries out strain to compare the inner peripheral surface of inner side protuberance 65, be reset to normality thereupon.Thus, in the situation that the front end of the urceolus 1 of ever sharp pencil by towards above, even if the pen core L in pen core tube 4 has entered the interface channel 67 that knocks parts 6, also due to the sliding surface 81b of the rear end butt flexure strip 81 of pen core L, so pen core L can not return to the pen core passage 70 of guiding parts 7v.Like this, even if the pen core L that the front end of the urceolus of ever sharp pencil 1 by towards top, also can prevent from being filled in pen core tube 4 falls.
Then, chuck 52, pen core tube 4, the mutual action of knocking parts 6 and guiding parts 7v are divided into " elastic force of (1) back-moving spring 77 is greater than the situation of chuck spring 56 elastic force " and " elastic force of (2) back-moving spring 77 is less than the situation of chuck spring 56 elastic force " described in detail below.
(1) elastic force of back-moving spring 77 is greater 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, simultaneously guiding parts 7v, knock the movement of advancing in the inside of urceolus 1 that becomes one of parts 6, pen core tube 4 and chuck 52.Utilize this movement of advancing, the holding piece 52b of chuck 52 forwards gives prominence to and expands from chuck bunching ring 54.When the rearward end of guiding parts 7v is further forwards pressed, guiding parts 7v makes back-moving spring 77 compressions, the movement of advancing in the inside of knocking parts 6 simultaneously, and the flexure strip 81 of guiding parts 7v is towards radially foreign side is crooked as mentioned above.
(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, the movement of advancing in the inside of knocking parts 6 simultaneously, and the flexure strip 81 of guiding parts 7v is towards radially foreign side is crooked as mentioned above.When the rearward end of guiding parts 7v is further forwards pressed, pen core tube 4 makes chuck spring 56 compression, simultaneously guiding parts 7v, knock the movement of advancing that becomes one of parts 6, pen core tube 4 and chuck 52.Utilize this movement of advancing, the holding piece 52b of chuck 52 forwards gives prominence to and expands from chuck bunching ring 54.
By making like this guiding parts 7v, knock parts 6, pen core tube 4 and chuck 52 move mutually, can implement to be used for to remove flexure strip 76(by stoping unit by one-off) stop operation that pen core L passes through and for making the operation of delivering mechanism 5 work, therefore can reduce user's trouble.
And, back-moving spring 77 is: after user is disengaged pressing of guiding parts 7v, by the guiding parts 7v that is pushed into the duty of knocking parts 6 inside is rearward pushed back, thereby contribute to radius vector to carry out strain to the flexure strip 81 of foreign side's bending, be reset to normality.But, in the situation that flexure strip 81 has the elastic force that the guiding parts 7v of the duty of making rearward returned to and can be reset to original state degree, not necessarily there is necessity that back-moving spring 77 is set in ever sharp pencil.But, in the situation that cause the elastic force decline of flexure strip 81 to make guiding parts 7v likely can not be reset to again normality owing to repeatedly guiding parts 7v being carried out to pressing operation result, back-moving spring 77 is preferably set in ever sharp pencil.
(the second embodiment)
Figure 11～Figure 14 means the figure of the ever sharp pencil that second embodiment of the invention relates to.Except adopt from the first embodiment knock different the knocking parts and these aspects of guiding parts different with the guiding parts of the first embodiment of parts, this embodiment and the first embodiment similarly form.Therefore, the component part identical with the component part of the first embodiment in the component part for the second embodiment shown in Figure 11～Figure 14, gives the reference marks identical with reference marks shown in Fig. 1～8, for they not repeat specification.
In the first embodiment, be provided with the front bulkhead inner side protuberance 65 outstanding to the rear of knocking parts 6 that is inserted into portion 62 from knocking the pen core tube of parts 6.To this, as shown in figure 12, in the second embodiment, replace inner side protuberance 65, be provided with from knocking forwards outstanding outside protuberance 69 of front end that the pen core tube of parts 6v is inserted into portion 62.This outside protuberance 69 forms the cylindric of opening forwardly.In knocking parts 6v, be inserted with guiding parts 9, the leading section of the flexure strip hereinafter described 96 of this guiding parts 9 is inserted the through hole 66 that the logical pen core tube that knocks parts 6v is inserted into portion 62.
In the guiding parts 7 relating at the first embodiment, rear side guide part 72 forms as one with front side guide part 74.To this, in the guiding parts 9 relating at the second embodiment, rear side guide part 92 separates formation with front side guide part 94, and these rear side guide parts 92 combine with front side guide part 94.Particularly, by the rearward end of front side guide part 94 is pressed into or screw engagement to the leading section of rear side guide part 92, these rear side guide parts 92 and front side guide part 94 are combined into one, and form guiding parts 9.Internal separation at guiding parts 9 has the pen core passage 90 connecting on fore-and-aft direction.In the rear end of rear side guide part 92, be provided with the receiving port 92a that accepts pen core L for pen core passage 90.For ease of pen core L is put into pen core passage 90, the inner peripheral surface of this receiving port 92a is rendered as from rear end the forwards taper surface of undergauge.
The front side guide part 94 of guiding parts 9 has a plurality of flexure strips 96 in the position of its toe lateral.Flexure strip 96, as by stoping unit performance function, stops pen core L to move between pen core tube 4 and pen core passage 90 under the normality of guiding parts 9.The guiding parts 9 that present embodiment relates to has a pair of flexure strip 96, and this flexure strip 96 forms by form two otch 94a along axis direction on front side guide part 94, symmetrical with respect to the central axis of front side guide part 94, and diametrically opposed.In addition, the periphery at the leading section of each flexure strip 96, is formed with the bellying 96a that radius vector bloats to foreign side in a circumferential direction.The size of internal diameter of knocking the outside protuberance 69 of parts 6v is set as the bellying 96a both sides that this outside protuberance 69 can be accepted two flexure strips 96, but the internal diameter that knocks the through hole 66 of parts 6v is set as not allowing the bellying 96a both sides of two flexure strips 96 through size through hole 66, less than the internal diameter of outside protuberance 69.Under the normality of knocking parts 6v shown in Figure 12, the bellying 96a of a pair of flexure strip 96 is to be entrenched in the outside protuberance 69 that knocks parts 6v by the state of constriction respectively diametrically.On the other hand, under the duty of knocking parts 6v shown in Figure 13, the bellying 96a of a pair of flexure strip 96 carries out strain with radius vector to foreign side's mode separated from one another, from knocking the outside protuberance 69 of parts 6v, forwards gives prominence to.
Therefore, outside protuberance 69 is as the narrow unit performance function that maintains, and under the normality of knocking parts 6v, takes in the leading section of flexure strip 96 and makes pen core passage 90 parts between this leading section be narrower than the diameter of pen core L.Particularly, under the normality of the guiding parts 9 shown in Figure 12, as mentioned above, the bellying 96a of a pair of flexure strip 96 is entrenched in the outside protuberance 69 that knocks parts 6v, and the gap between the opposite face of bellying 96a, namely pen core passage 90 parts between bellying 96a are less than the diameter of pen core L.On the other hand, when the bellying 96a of a pair of flexure strip 96 is as shown in Figure 13 forwards outstanding from the outside protuberance 69 that knocks parts 6v, a pair of flexure strip 96 strains, make gap between the opposite face of bellying 96a be greater than the diameter of L.
At the front side of guiding parts 9 guide part 94 and the urceolus that knocks parts 6v, be inserted in the annulus between portion 60, dispose the back-moving spring 77 being formed by helical spring.In other words, the chimeric periphery that is arranged on the front side guide part 94 of guiding parts 9 of this back-moving spring 77.Back-moving spring 77 is always rearward afterburning to guiding parts 9 integral body, and under the normality of guiding parts 9, the rearward end of rear side guide part 92 is rearward given prominence to from knocking the open rearward end of parts 6.In addition, knocking under the normality of parts 6v, the bellying 96a of a pair of flexure strip 96 can not pass in knocking the through hole 66 of parts 6v, but engaging is at the front bulkhead that knocks parts 6v, so stoped guiding parts 9 to depart from from knocking parts 6v.
Then in the ever sharp pencil, relating to for the second embodiment, pen core L describes to the filling in pen core tube 4.Under the normality of guiding parts shown in Figure 12 9, as mentioned above, the bellying 96a of a pair of flexure strip 96 is embedded in the outside protuberance 69 that knocks parts 6v, and the interval between the opposite face of bellying 96a, diameter that namely pen core passage 90 parts between bellying 96a are compared pen core L are by constriction.Under the normality of this guiding parts 9, user make ever sharp pencil urceolus 1 front end downward, from the receiving port 92a of guiding parts 9, pen core L is put into pen core passage 90, 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 because the interval between the bellying 96a of two flexure strips 96 is narrower than the diameter of pen core L as mentioned above, so can not pass between bellying 96a, but rest on the position by rear than bellying 96a.Namely, pen core L is sandwiched between two flexure strips 96, is prevented from.Therefore, pen core L is stoped further to fall in pen core passage 90 by flexure strip 96, so can not move to pen core tube 4.
Under this state, user forwards presses the rearward end of the rear side guide part 92 of guiding parts 9, and as shown in figure 13, guiding parts 9 makes back-moving spring 77 compressions, forwards slides mobile in knocking parts 6v simultaneously.When guiding parts 9 is knocking the mobile ormal weight that forwards slides from normality position in parts 6v, the bellying 96a of a pair of flexure strip 96 is forwards outstanding from knocking the outside protuberance 69 of parts 6v, from knocking the approximately intrafascicular release of the outside protuberance 69 of parts 6v.Particularly, a pair of flexure strip 96 strains, the opposite face that makes its bellying 96a is detaching direction, foreign side radially namely toward each other.Become like this guiding parts 9 and from normality position, forwards slide and moved the duty of ormal weight in knocking parts 6v, the gap between the opposite face of the bellying 96a of a pair of flexure strip 96 is greater than the diameter of pen core L.Therefore, at guiding parts 9, become after duty, the pen core L resting in pen core passage 90 due to flexure strip 96 passes between the opposite face of two flexure strips 96, to pen core tube 4, falls.
To pen core tube 4, fill after pen core L like this, if user removes for the pressing of guiding parts 9, guiding parts 9 returns to normality from duty.Narrate in detail, if user removes for the pressing of guiding parts 9, due to the active force of back-moving spring 77, that guiding parts 9 is rearward slided in knocking parts 6v is mobile.Along with guiding parts 9 rearward slides and moves in knocking parts 6v, the bellying 96a of a pair of flexure strip 96 retreats movement with outside protuberance 69 sliding-contacts of knocking parts 6v simultaneously.In other words, thus a pair of flexure strip 96 enters by its bellying 96a in the outside protuberance 69 that knocks parts 6v with the opposite face of its bellying 96a direction of closing, the inside mode strain of side in footpath namely toward each other, is reset to normality.Under the normality of guiding parts 9, the interval between relative bellying 96a is less than the diameter of pen core L as mentioned above.Therefore, even after pen core L being filled in pen core tube 4 by the front end of the urceolus of ever sharp pencil 1 towards above, also the front end of the rear end butt flexure strip 96 of pen core L as shown in Figure 14, pen core L cannot enter between relative bellying 96a, so can not return to the pen core passage 90 of guiding parts 9.
As mentioned above, according to present embodiment, in the situation that the front end that user makes ever sharp pencil towards above, the pen core L in pen core tube 4 by flexure strip 96(by stoping unit) stop to the pen core passage 90 of guiding parts 9 and return, so can prevent that pen core L from falling from pen core tube 4.
In addition, guiding parts 9 advances mobile and flexure strip 96(by stoping unit in knocking parts 6v) removed pen core L pass through prevention time, pen core L passes in the pen core passage 90 of guiding parts 9, can move to pen core tube 4, so no longer need in the past like that for pen core tube dismounting to knock the such operation of lid that parts are knocked in parts or switching.In addition, can be simply by pen core L to the interior filling of pen core tube 4, and, can prevent from that children from waiting to swallow the state of affairs of knocking parts 6v by mistake, can improve security.
And, for the present invention, use specific embodiment to be illustrated, but the present invention is not limited to those embodiments, within not departing from the scope of main idea of the present invention, can apply various changes and correction is apparent to above-mentioned embodiment.For example, for the present invention, for the embodiment with the ever sharp pencil of specific delivering mechanism, be illustrated, but the present invention is not limited to the ever sharp pencil with such delivering mechanism, also can be applicable to replace it and the ever sharp pencil with known any suitable delivering mechanism.
Claims (7)
1. an ever sharp pencil, is characterized in that,
Possess: urceolus;
Pen core tube, it is accommodated in described urceolus, and can take in pen core in inside;
Delivering mechanism, it is accommodated in described urceolus and is connected with the leading section of described pen core tube, and the described pen core in described pen core tube is forwards sent;
Knock parts, it is assemblied in sliding freely in the rearward end of described urceolus and is connected with the rearward end of described pen core tube, for making described delivering mechanism work; And
Guiding parts, the inside that it knocks parts described in being assemblied in sliding freely, has and accepts described pen core and to the pen core passage of described pen core tube guiding,
At described guiding parts, what be provided with that the described pen core that stops in described pen core passage passes through pass through prevention unit,
This ever sharp pencil forms, and by described guiding parts, described, knocks the movement of advancing in parts, described by stoping unit to remove the prevention of pass through of described pen core in described pen core passage.
2. ever sharp pencil according to claim 1, is characterized in that,
The position of the front in described guiding parts, is provided with the flexure strip that passes through to stop unit performance function as described,
This ever sharp pencil forms, under the normality of described guiding parts, described flexure strip makes described pen core passage narrower than the diameter of described pen core, thereby stop passing through of described pen core, by described guiding parts, described, knock the movement of advancing in parts, described flexure strip makes described pen core passage than the enlarged-diameter of described pen core, thereby removes the prevention of passing through of described pen core.
3. ever sharp pencil according to claim 2, is characterized in that,
At the described leading section that knocks parts, be provided with the interface channel that described pen core passage is connected with described pen core tube,
Described in described flexure strip is positioned at, knock the tight rear of the described interface channel of parts, form and stop the movement of described pen core between described interface channel and described pen core passage.
4. ever sharp pencil according to claim 3, is characterized in that,
Described knock described interface channel in parts near position, be provided with the expansion promotion unit that makes described flexure strip distortion, to along with the movement of advancing of described guiding parts, expand described pen core passage.
5. ever sharp pencil according to claim 2, is characterized in that,
At the described leading section that knocks parts, be provided with the narrow unit that maintains of the leading section that can take in described flexure strip,
This ever sharp pencil forms, and by the described narrow leading section of taking in described flexure strip in maintaining unit, the described pen core passage of the leading section of described flexure strip is narrower than the diameter of described pen core.
6. ever sharp pencil according to claim 5, is characterized in that,
This ever sharp pencil forms, and along with described guiding parts knocks described the movement of advancing in parts, described flexure strip, from the described narrow unit strain forwards outstanding time that maintains, expands described pen core passage.
7. according to the ever sharp pencil described in any one in claim 1～6, it is characterized in that,
This ever sharp pencil forms, by the movement of advancing of described guiding parts, described in knock the parts movement of advancing in described urceolus, thereby described delivering mechanism work.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012214537A JP5146863B1 (en) | 2012-09-27 | 2012-09-27 | mechanical pencil |
| JP2012-214537 | 2012-09-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103692821A true CN103692821A (en) | 2014-04-02 |
| CN103692821B CN103692821B (en) | 2016-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310435809.2A Active CN103692821B (en) | 2012-09-27 | 2013-09-23 | Ever sharp pencil |
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| Country | Link |
|---|---|
| JP (1) | JP5146863B1 (en) |
| CN (1) | CN103692821B (en) |
| TW (1) | TWI593568B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6307647B1 (en) * | 2017-03-30 | 2018-04-04 | 株式会社たくみ | Knock-type writing instrument |
| JP7372134B2 (en) * | 2019-12-18 | 2023-10-31 | コクヨ株式会社 | mechanical pencil |
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| CN201176065Y (en) * | 2008-03-21 | 2009-01-07 | 许荣琳 | Improved structure for simple propelling pencil |
| CN201410818Y (en) * | 2009-06-10 | 2010-02-24 | 郑恩道 | Propelling pencil capable of continuously propelling pencil leads |
| CN102229297A (en) * | 2011-07-01 | 2011-11-02 | 厦门高一笔业有限公司 | Micro adaptive core for propelling pencil |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62194089U (en) * | 1986-06-02 | 1987-12-10 | ||
| JPH0546953Y2 (en) * | 1988-04-14 | 1993-12-09 | ||
| JPH0323492U (en) * | 1989-07-17 | 1991-03-12 | ||
| JP2000127673A (en) * | 1998-10-26 | 2000-05-09 | Mitsubishi Pencil Co Ltd | Mechanical pencil |
| TWM246180U (en) * | 2003-11-20 | 2004-10-11 | Rung-Lin Shiu | Improved mechanical pencil structure |
| TWM339423U (en) * | 2008-03-14 | 2008-09-01 | rong-lin Xu | Structural improvement of auto-eject pencil |
| JP3142422U (en) * | 2008-04-01 | 2008-06-12 | 許 榮琳 | Mechanical pencil without pressing |
| JP2012111040A (en) * | 2010-11-19 | 2012-06-14 | Mitsubishi Pencil Co Ltd | Writing utensil |
-
2012
- 2012-09-27 JP JP2012214537A patent/JP5146863B1/en active Active
-
2013
- 2013-09-23 CN CN201310435809.2A patent/CN103692821B/en active Active
- 2013-09-27 TW TW102134969A patent/TWI593568B/en not_active IP Right Cessation
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09156284A (en) * | 1995-11-30 | 1997-06-17 | Sailor Pen Co Ltd:The | Knock type mechanical pencil |
| JPH10157380A (en) * | 1996-11-27 | 1998-06-16 | Pentel Kk | Cap for refill tank of mechanical pencil |
| CN1364699A (en) * | 2001-01-10 | 2002-08-21 | 株式会社寿 | Mechanical propelling pencil |
| CN2850936Y (en) * | 2005-11-30 | 2006-12-27 | 郝钰 | Propelling pencil |
| CN201176065Y (en) * | 2008-03-21 | 2009-01-07 | 许荣琳 | Improved structure for simple propelling pencil |
| CN201410818Y (en) * | 2009-06-10 | 2010-02-24 | 郑恩道 | Propelling pencil capable of continuously propelling pencil leads |
| CN102229297A (en) * | 2011-07-01 | 2011-11-02 | 厦门高一笔业有限公司 | Micro adaptive core for propelling pencil |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014069316A (en) | 2014-04-21 |
| JP5146863B1 (en) | 2013-02-20 |
| CN103692821B (en) | 2016-09-14 |
| TWI593568B (en) | 2017-08-01 |
| TW201422457A (en) | 2014-06-16 |
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