CN103281926A - Slide fastener - Google Patents

Abstract

In this slide fastener (1, 80), a fragile section (15, 86) is provided to an element row (12), and it is possible to detach the element row (12) in an engaged state from the fragile section (15, 86) and to separate first and second fastener stringers (10a, 10b). Lateral withdrawal prevention sections (30, 71, 72, 73, 74, 84) are arranged on the second fastener stringer (10b). The lateral withdrawal prevention sections (30, 71, 72, 73, 74, 84) have a larger thickness, for preventing lateral withdrawal, than the spacing of a tape insertion and passage gap of a slider (50). The lateral withdrawal prevention sections (30, 71, 72, 73, 74, 84) have at least one small-width section (32, 71b, 72b, 72d, 73b, 74b) at a portion provided with a thickness for preventing lateral withdrawal. Even when the slide fastener (1, 80) receives a lateral pulling force, the lateral withdrawal prevention sections (30, 71, 72, 73, 74, 84) are thereby held in the slider (50), and a closed state can be maintained. It is also possible, when the element row (12) is detached from the fragile section (15, 86), to pull out the lateral withdrawal prevention sections (30, 71, 72, 73, 74, 84) from the slider (50) in a smooth manner.

Description

Slide fastener

Technical field

The present invention relates to a kind of slide fastener, this slide fastener disposes the frangible portion that engagement force is descended locally at the chain denture, the engagement of chain denture that can be about this frangible portion is removed and fastener stringer about making separates.

Background technology

The engagement that discloses the chain denture about can removing rapidly in No. 2006/103438 separate edition (patent documentation 1) is for example disclosed in the world and slide fastener that fastener stringer about making separates.This slide fastener is known as urgent open end zipper sometimes, is used for life vest etc. always.

Below, with reference to Fig. 9 patent documentation 1 described slide fastener is described.In addition, in the following description, be fore-and-aft direction with the strip length direction dictates of chain belt, particularly the direction that will pull head be slided for the engagement of the chain denture about making is made as the place ahead, and the direction that pull head will be slided is made as the rear.

In addition, be left and right directions with the bandwidth direction dictates of chain belt, the left side in the time of will observing slide fastener from face side is made as left, the right side is made as right-hand.In addition, the band both forward and reverse directions of chain belt is defined as above-below direction, a side that will dispose the pulling-on piece of pull head with respect to the belt surface of chain belt is made as the top, and an opposite side with this direction is made as the below.

The band side edge part of the chain belt 92 about patent documentation 1 described slide fastener 90 is included in be formed with chain denture 93 about become a pair of fastener stringer 91; With the pull head 94 that can install along the mode that chain denture 93 slides; Be configured in the stop part 95 of distolateral (front) of the chain denture 93 on the chain belt 92 on right side; And the separation inlay 96 of another distolateral (rear end side) of the chain denture 93 on the chain belt about being configured in 92.

On this slide fastener 90, about the band lateral margin of facing mutually of chain belt 92 dispose the 92a of heart yearn portion, every the interval of regulation a plurality of zipper sprocket 93a are installed at the band side edge part with the 92a of this heart yearn portion of chain belt 92, form chain denture 93.In addition, about chain denture 93 in, form frangible portion 93b by the slot of deliberately the zipper sprocket 93a of regulation number being dismantled and forming.

In addition, though be that front at the chain denture 93 of the fastener stringer 91 on right side disposes stop part 95, do not dispose stop part 95 in the front of the chain denture 93 of the fastener stringer 91 in left side.In addition, the front end of the chain denture 93 in left side is positioned at the position of leaning on rear side than the front end of the chain denture 93 on right side, and the chain denture 93 in left side forms shortlyer than the chain denture 93 on right side.

In this case, below the zipper sprocket 93a(that is configured in side foremost of the chain denture 93 in left side, this zipper sprocket note is made the front end sprocket) be configured to, when pull head 94 being slid into stop with the front position of stop part 95 butts, the part of front end sprocket 93a is accommodated in the sprocket path of navigation of pull head 94.

The separation inlay 96 of this slide fastener 90 comprises: plunger 96a, and it is fixed on the rearward end of the fastener stringer 91 in left side along chain denture 93; Case rod 96b, it is fixed on the rearward end of the fastener stringer 91 on right side in the mode of facing mutually with plunger 96a along chain denture 93; Casing 96c, its bottom and this case rod 96b at case rod 96b is configured to one.

Slide fastener 90 about patent documentation 1 with structure as described above, by pull head 94 is forwards slided and chain denture 93 engagement about can making towards stop part 95, when making pull head 94 slide into front position with stop part 95 butts, the fastener stringer 91 about can making is closed fully.

In addition, when stopping making pull head 94 slide into front position, the chain denture 93 in left side be configured in foremost that the part of the front end sprocket 93a of side is housed in the sprocket path of navigation of pull head 94, so the fastener stringer 91 about can preventing begins to separate from the front of chain denture 93.

On the other hand, the part of the chain denture 93 about the slide fastener 90 of this patent documentation 1 is provided with frangible portion 93b, so when about the situation of the lateral pull that pulls energetically of fastener stringer 91 direction that is subjected to they are separated towards each other under, frangible portion 93b separately, from with this frangible portion 93b adjacency about zipper sprocket 93a remove engagement to the fore-and-aft direction of strip length direction, about chain denture 93 separate gradually.

And, when about the engagement releasing of chain denture 93 when the leading section, the front end sprocket 93a in the left side in the deutostoma of pull head 94 is housed in a part sprocket path of navigation of pull head 94 extracts.In addition, when about the engagement releasing of chain denture 93 during to rearward end, plunger 96a is gone out from casing 96c order.Thus, can with about fastener stringer 91 be fully withdrawn.

In the slide fastener 90 of patent documentation 1, chain denture 93 about making as described above from frangible portion 93b begin to separate and with about fastener stringer 91 be fully withdrawn, compare with the slip that utilizes pull head 94 90 the situation of unziping, can be simply and promptly draw back about fastener stringer 91.Therefore, the slide fastener 90 of patent documentation 1 can be especially effectively be used for the goods of such band slide fastener such as the life vest that need tackle fast when for example urgent.

Yet now, the purposes of slide fastener also enlarging, is mounted the goods that are used in various fields gradually.For example open in fact to record in flat No. 84313 communiques of 4 – (patent documentation 2) in Japan slide fastener is installed in the situation that sport pants use.

The bottom from the upper end of the waist of trousers side of these sport pants to bottom of s trouser leg side that these patent documentation 2 described sport pants constitute trouser legs portion about it is equipped with slide fastener.Adopt the sport pants of patent documentation 2, the pull head of the slide fastener by making the trouser legs portion about the being installed on fastener stringer that makes each slide fastener that slides separates, and sport pants can be split up into sheet portion of predecessor and these 2 parts of back body sheet portion from the form of trousers.

In addition, the fastener stringer that slides about making by the pull head that makes the slide fastener that is disposed at left and right sides trouser legs portion is closed again, the above-mentioned sheet portion of predecessor that draws back like that and back body sheet portion is connected, so can make sport pants return to the form of original trousers.

In the sport pants of the patent documentation 2 with this structure, in the slide fastener closure of the left and right sides state under, can similarly put on or take off with ordinary movement trousers in the past.In addition, the fastener stringer about the slide fastener by making these sport pants separates and these sport pants is separated into sheet portion of predecessor and back body sheet portion, even under the state of wearing sport footwear, nail footwear etc., also can easily take off this sport pants.

Technical literature formerly

Patent documentation 1: the international separate edition that discloses No. 2006/103438

Patent documentation 2: real the opening of Japan put down No. 84313 communiques of 4 –

As described in the patent documentation 2, slide fastener is being used under the situation of sport pants, be installed in slide fastener on the sport pants by using for example slide fastener of patent documentation 1, and can from the frangible portion of the chain denture of being located at this slide fastener simply and promptly with about fastener stringer separate, so can be than more simply and promptly took off sport pants in the past.

But, adopt the slide fastener 90 of patent documentation 1, pull head 94 is slid under the situation of the state of pull head 94 being mentioned fully with the front position of stop part 95 butts, on the fastener stringer 91 in the left side that does not dispose stop part 95, be housed in the sprocket path of navigation of pull head 94 at the 92a of heart yearn portion that exposes than chain denture 93 position on the front.At this moment, under the situation that has been subjected to lateral pull etc. by the end of stop part 95 sides at slide fastener 90, the 92a of heart yearn portion of this exposure and the flange collision of pull head 94 or friction and impaired, thus there is this problem of the durability decline that makes slide fastener 90.

In addition, slide fastener being used under the situation of sport pants, for the operation that makes slide fastener is easy to carry out, the separation inlay of slide fastener is configured in the bottom of bottom of s trouser leg side, stop part is configured in the upper end of waist of trousers side.Therefore, when keeping the form of trousers in the chain denture engagement that makes slide fastener, the pull head of slide fastener is configured in waist of trousers portion with the stop part butt.

In this case, when putting on or take off sport pants, the waist of trousers part of pulling trackpants has the circumferential tension force of health in this waist portions effect.Therefore, when wearing off the sport pants that are in the trousers form, all to apply bigger lateral pull repeatedly to the end of the stop part side of the slide fastener that disposes pull head at every turn.

Therefore, for example will be for example under the situation of slide fastener as the above-mentioned slide fastener that is installed on sport pants like that of patent documentation 1, when wearing off sport pants, the end of the stop part side of slide fastener be subjected to bigger lateral pull.

At this, adopt the slide fastener 90 of patent documentation 1, when about fastener stringer 91 when being in closure state, Zuo Ce chain denture 93 is configured in foremost that the part of the front end sprocket 93a of side is housed in the sprocket path of navigation of pull head 94 as mentioned above.Therefore, even the end by stop part 95 sides of slide fastener 90 is subjected to lateral pull, the closure state that also can keep fastener stringer 91 reaches till the size of a certain degree up to lateral pull.

But, the end by stop part 95 sides at slide fastener 90 has been subjected under the situation of bigger lateral pull, because direction run-off the straight of pull head 94 etc. makes the front end sprocket 93a in the sprocket path of navigation that is housed in pull head 94 deviate from from the back oral-lateral of pull head 94, about the engagement of chain denture 93 forcibly removed from front.As a result, exist slide fastener 90 about fastener stringer 91 can run counter to user's intention and separate gradually, can not keep this problem of trousers form.

In addition, as mentioned above slide fastener 90 be subjected to bigger lateral pull by the end of stop part 95 sides the time, the front end sprocket 93a itself that is housed in the sprocket path of navigation of pull head 94 is subjected to bigger power (load) locally from the flange of pull head 94.At this moment, the contact area between front end sprocket 93a and the chain belt 92 reduces, and front end sprocket 93a is high anything but with respect to the constant intensity of chain belt 92.Therefore, when front end sprocket 93a has been subjected to bigger stress from the flange of pull head 94, exist this front end sprocket 93a to fall down from chain belt 92, can not keep the problem of the closure state of fastener stringer 91.

In addition, be installed under the situation of sport pants at the slide fastener 90 with patent documentation 1, when the fastener stringer 91 about the frangible portion 93b that is located at chain denture 93 certainly makes separates, also there are the following problems, that is, the front end sprocket 93a that is housed in the sprocket path of navigation of pull head 94 falls down and comes off from chain belt 92 easily.

Specifically, adopt the slide fastener 90 of patent documentation 1, when the fastener stringer 91 about frangible portion 93b makes separated, for example when along inclined direction pulling the fastener stringer 91 of a side, the interior front end sprocket 93a of sprocket path of navigation that is housed in pull head 94 was tangled by the flange of this pull head 94 sometimes.

At this moment, as mentioned above, front end sprocket 93a is high anything but with respect to the constant intensity of chain belt 92, therefore easily so make front end sprocket 93a be subjected to bigger load from this flange because front end sprocket 93a is tangled by the flange of pull head 94, front end sprocket 93a take place fall down and such condition of poor of coming off from chain belt 92.

Summary of the invention

The present invention makes in view of above-mentioned problem in the past, its concrete purpose is to provide a kind of slide fastener, even be subjected to lateral pull in that pull head is stopped under the state of end position of stop part side, the closure state of the fastener stringer about this slide fastener also can stably be kept, fastener stringer about making is when frangible portion is separated in addition, can not damage slide fastener member of formation the fastener stringer about making separate.

In order to achieve the above object, in slide fastener provided by the present invention, as basic structure, this slide fastener comprises: about become a pair of the 1st fastener stringer and the 2nd fastener stringer, they are becoming a pair of the 1st chain belt and the band side edge part of facing mutually of the 2nd chain belt that the chain denture is installed; Pull head, it can slide along above-mentioned chain denture; Stop part, it is configured in above-mentioned chain denture one distolateral of above-mentioned the 1st fastener stringer; At least 1 frangible portion, it is disposed at above-mentioned chain denture, and the engagement force of the above-mentioned chain denture about being used for making descends locally or disappears, above-mentioned pull head has the roughly sprocket path of navigation of Y font between last lower wing plate, the chain belt that is formed with above-mentioned the 1st chain belt and the 2nd chain belt at the side edge part of above-mentioned pull head runs through the gap, this slide fastener can make the above-mentioned chain denture that is in engagement begin to separate from above-mentioned frangible portion, and draw back above-mentioned the 1st fastener stringer and the 2nd fastener stringer, the topmost of this slide fastener is characterised in that, distolaterally dispose horizontal disengaging and prevent portion at one of the above-mentioned chain denture of above-mentioned the 2nd fastener stringer, for when above-mentioned the 1st fastener stringer that is in closure state and the 2nd fastener stringer have been subjected to lateral pull, prevent that above-mentioned the 2nd chain belt from running through the gap from the above-mentioned sprocket path of navigation of above-mentioned pull head via above-mentioned chain belt and being pulled out, the above-mentioned horizontal disengaging portion of preventing has the thickness that laterally breaks away from be used to preventing, should be used for preventing that the thickness that laterally breaks away from had the size that runs through the big band both forward and reverse directions in the interval in gap than above-mentioned chain belt, above-mentioned horizontal disengaging prevents portion in the part that has be used to the thickness that prevents from laterally breaking away from, and has at least 1 narrow width part that obtains after size with the bandwidth direction reduces.

In slide fastener of the present invention, preferably, constitute above-mentioned narrow width part by setting slit in the above-mentioned horizontal disengaging portion of preventing.

In this case, preferably, prevent that from above-mentioned horizontal disengaging the side genesis of the chain belt inboard of portion from disposing above-mentioned slit along the bandwidth direction, in addition, particularly preferably be, dwindle the slit width of the open side end of above-mentioned slit.

In addition, the ora terminalis of a side of facing mutually with above-mentioned stop part that also can prevent portion from above-mentioned horizontal disengaging disposes above-mentioned slit along the bandwidth direction.

In slide fastener of the present invention, preferably, dispose heart yearn portion at the chain belt side edge of above-mentioned the 1st chain belt and the 2nd chain belt, at least a portion that is disposed at the heart yearn portion of above-mentioned the 2nd chain belt is embedded in above-mentioned horizontal disengaging and prevents in the portion.

In addition, preferably, above-mentioned horizontal disengaging is prevented that the length dimension of portion is set at the interval from the back-end location of guide post to the deutostoma position greater than above-mentioned pull head, and be set at the size in the above-mentioned sprocket path of navigation on the above-mentioned pull head that can be housed in the end that stops at above-mentioned stop part side.

In addition, preferably, above-mentioned slide fastener has for above-mentioned horizontal disengaging being prevented the elastic deformation amount of portion is limited in the limit deformation mechanism in the prescribed limit.

In addition, in slide fastener of the present invention, also can be by constituting above-mentioned narrow width part in the above-mentioned horizontal disengaging portion of preventing configuration through-hole section.

In slide fastener of the present invention, preferably, above-mentioned horizontal disengaging prevents that the size of bandwidth direction of the above-mentioned narrow width part of portion is set at the size that prevents the band both forward and reverse directions of portion less than above-mentioned horizontal disengaging.

In addition, in slide fastener of the present invention, preferably, the last lower flange of above-mentioned pull head comprises: parallel portion, and it is configured in the back oral-lateral of above-mentioned pull head in parallel with each other; Rake, its end from above-mentioned parallel portion extends out, and the interval that above-mentioned about making goes up between lower flange goes and increases gradually towards the shoulder mouth, above-mentioned horizontal disengaging prevent the above-mentioned narrow width part of portion be configured in above-mentioned on the above-mentioned pull head of the end that stops at above-mentioned stop part side go up lower flange above-mentioned rake in the scope of strip length direction.

In addition, preferably, the above-mentioned horizontal disengaging in the slide fastener of the present invention prevents that portion has the plane with above-mentioned stop part facing sides.

In addition, in the present invention, preferably, the above-mentioned horizontal disengaging portion of preventing has to the outstanding protuberance of above-mentioned the 1st chain belt, dispose pseudo-sprocket between the above-mentioned stop part of above-mentioned the 1st chain belt and above-mentioned chain denture, above-mentioned pseudo-sprocket comprises: main part, and it is fixed in above-mentioned the 1st chain belt; Head, above-mentioned horizontal disengaging to above-mentioned the 2nd fastener stringer prevents from extending between portion and the above-mentioned chain denture from aforementioned body portion for it, and this head can prevent the above-mentioned protuberance sliding-contact of portion with above-mentioned horizontal disengaging.

In addition, in the present invention, preferably, above-mentioned stop part has only portion, the portion of should ending has than the guide post of above-mentioned pull head and the size that runs through the big bandwidth direction of width between the last lower flange, the above-mentioned portion of ending has the pull head fastening portion of the above-mentioned pull head of fastening with the above-mentioned guide post butt of above-mentioned pull head, and above-mentioned pull head fastening portion constitutes can be along bandwidth direction strain.

The effect of invention

Slide fastener of the present invention constitutes in an end of the 1st fastener stringer of a side and disposes stop part, and dispose horizontal disengaging in an end of the 2nd fastener stringer of opposite side and prevent portion, the at least a portion that laterally breaks away from the portion that prevents has the thickness that laterally breaks away from be used to preventing, should be used for preventing that the thickness that laterally breaks away from had the size that chain belt than pull head runs through the big band both forward and reverse directions in the interval in gap.

In this slide fastener of the present invention, when making pull head slide into the front position of stop part butt that the 1st fastener stringer about making and the 2nd fastener stringer are closed, the above-mentioned horizontal disengaging portion of preventing that has be used to the thickness that prevents from laterally breaking away from is housed in the sprocket path of navigation of pull head.Therefore, even above-mentioned the 1st fastener stringer and the 2nd fastener stringer are subjected to lateral pull under the closure state of the 1st fastener stringer and the 2nd fastener stringer, also can utilize the horizontal disengaging portion of preventing to prevent that sprocket path of navigation from pull head from running through the gap via chain belt and pulling out the 2nd chain belt, so about the chain denture can not separate, can stably keep the closure state of the 1st fastener stringer and the 2nd fastener stringer.

In addition, laterally break away from the portion of preventing as long as have above-mentionedly be used to the thickness that prevents from laterally breaking away from its at least a portion, the horizontal disengaging of the present invention portion of preventing for example can comprise: main part, and it has above-mentioned be used to preventing the laterally thickness of disengaging; Extension, it has the size that chain belt than pull head runs through the little band both forward and reverse directions in the interval in gap, and this extension is from aforementioned body portion extend out (for example fin shown in the variation described later).In addition, the present invention also is included in the horizontal disengaging portion of preventing and does not set the situation of size that constant horizontal disengaging prevents the band both forward and reverse directions of portion on the whole.

In addition, horizontal disengaging in the present invention prevents in the portion, because in the part that has be used to the thickness that prevents from laterally breaking away from, has at least 1 narrow width part that obtains after size with the bandwidth direction reduces, so can make this laterally break away from the portion of preventing easily with the mode strain along the bending of bandwidth direction.Thus, even will laterally break away from the portion of preventing when having made the 1st fastener stringer and the 2nd fastener stringer closure is housed under the state in the sprocket path of navigation of pull head, when chain denture that also can be about making begins to separate from the frangible portion of being located at the chain denture, by making horizontal disengaging prevent portion's strain, can extract horizontal disengaging swimmingly from the sprocket path of navigation of pull head and prevent portion, and the interference that can will laterally break away between the portion of preventing and pull head is suppressed at Min..Thereby, the 1st fastener stringer and the 2nd fastener stringer about can drawing back swimmingly.

In addition, in order to make horizontal disengaging prevent that portion is with the mode strain along the bending of bandwidth direction, can consider not to be to utilize single member to constitute the portion that prevents that laterally breaks away from, but utilize the horizontal portion that prevents that breaks away from of a plurality of independently small resin-formed bodies (that is, the horizontal disengaging among the present invention prevents that the narrow width part place of portion from being the form that disconnects fully) formation that is disposed at the band side edge part of the 2nd chain belt with predetermined distance.

But, prevent that the situation of portion from comparing with utilizing single member to constitute laterally to break away from, disengaging prevents under the situation of portion utilizing a plurality of independently small resin-formed bodies to constitute laterally, be easy to along the bending of bandwidth direction obviously the descending to the 2nd chain belt strength of fixation of the resin molded body of each though the portion of preventing should laterally be broken away from.

Therefore, for example make each resin molded body in that slide fastener is applied lateral pull when the flange place of pull head is subjected to loading or extracting horizontal disengaging via deutostoma from the sprocket path of navigation of pull head when preventing that each resin molded body is tangled by the flange of pull head under the situation of portion etc., produce each little resin molded body and fall down and this drawback of coming off from the 2nd chain belt easily.

With respect to this, prevent portion by utilizing single member to constitute laterally to break away from, can significantly increase horizontal disengaging and prevent portion to the 2nd chain belt strength of fixation, thereby can prevent effectively that this laterally breaks away from the portion that prevents and falls down and come off from the 2nd chain belt.

In this kind slide fastener of the present invention, by setting slit and constitute above-mentioned narrow width part laterally breaking away from the portion of preventing, for example dispose this slit from the side genesis that laterally breaks away from the chain belt inboard of the portion that prevents along the bandwidth direction.Thus, the chain denture about making begins to separate and when drawing back the 1st fastener stringer and the 2nd fastener stringer, can easily make horizontal disengaging prevent that portion is along bandwidth direction strain from frangible portion.

In this case, dwindle by the slit width with the open side end of above-mentioned slit, can stably constitute limit deformation described later mechanism.That is, when making horizontal disengaging prevent portion's strain, laterally break away from and prevent that the extension that is positioned at the open side end side of the slit in the portion from running into each other, thereby stably limit lateral breaks away from and prevents the further strain of portion.

In addition, in slide fastener of the present invention, chain denture about making begins to separate and extracts horizontal disengaging when preventing portion from the sprocket path of navigation of pull head via deutostoma from frangible portion, carries out strain and extracts this and laterally break away from the portion that prevents while make this laterally break away from the portion of preventing.

At this moment, by the above-mentioned slit width that dwindles the open side end of slit like that, can be when making the horizontal disengaging portion of preventing carry out strain, make horizontal disengaging prevent that the extension that is positioned at the open side end side of the slit in the portion is against each other and make the open side closed end of slit, the extension that is positioned at the open side end side that perhaps makes slit is close to each other and further dwindle the slit width of open side end.Therefore, extracting horizontal disengaging from the sprocket path of navigation of pull head when preventing portion, the flange that can prevent pull head effectively colludes hangs the slit that laterally breaks away from the portion that prevents, can extract horizontal disengaging more swimmingly and prevent portion.

In addition, in slide fastener of the present invention, setting under the situation that slit constitutes above-mentioned narrow width part by laterally breaking away from the portion of preventing, for example also can dispose this slit along the bandwidth direction from the ora terminalis of a side of facing mutually with stop part that laterally breaks away from the portion that prevents.Even constituting like this under the situation of the narrow width part that laterally breaks away from the portion that prevents, also can make the 1st fastener stringer and the 2nd fastener stringer when frangible portion begins to separate, make the horizontal disengaging portion of preventing easily along bandwidth direction strain.

In slide fastener of the present invention, dispose heart yearn portion at the chain belt side edge of the 1st chain belt and the 2nd chain belt, at least a portion that is disposed at the heart yearn portion of the 2nd chain belt is embedded in horizontal disengaging and prevents in the portion.Thus, can utilize the horizontal disengaging portion of preventing to protect the heart yearn portion of the 2nd chain belt, be scratched or damaged because directly contacting etc. with pull head so can prevent heart yearn portion, thereby can improve the durability of slide fastener.

In addition, prevent in the portion by in this wise at least a portion of heart yearn portion being embedded in horizontal disengaging, can increase horizontal disengaging and prevent constant intensity between portion and the 2nd chain belt.Therefore, even for example the 1st fastener stringer and the 2nd fastener stringer are subjected to lateral pull under closure state, make horizontal disengaging prevent that portion is subjected to bigger load from the flange of pull head, also can prevent from laterally breaking away from the portion that prevents effectively and fall down and damaged from the 2nd chain belt.

In addition, in slide fastener of the present invention, the length dimension that laterally breaks away from the portion that prevents is set at the interval from the back-end location of guide post to the deutostoma position greater than pull head, and is set at the size in the sprocket path of navigation on the pull head that can be housed in the end that stops at the stop part side.

Be set at the interval from the back-end location of guide post to the deutostoma position greater than pull head by the above-mentioned size that will laterally break away from the strip length direction of the portion of preventing in this wise, be subjected to lateral pull even be in the 1st fastener stringer and the 2nd fastener stringer of closure state, also can stop horizontal disengaging to prevent that portion from running through the gap from the sprocket path of navigation of pull head via chain belt and being drawn out more reliably, thereby can more stably keep the closure state of the 1st fastener stringer and the 2nd fastener stringer.

In addition; has above-mentioned the sort of size in the strip length direction as long as laterally break away from the portion of preventing; just can utilize the horizontal disengaging portion of preventing more stably to protect heart yearn portion; and prevent that portion from forming strip along the strip length direction owing to laterally break away from; prevent contact area between portion and the 2nd chain belt so can increase horizontal disengaging, increase laterally to break away from and prevent that portion is to the 2nd chain belt strength of fixation.In this case, preferably, to form on the strip length direction flange than pull head long with laterally breaking away from the portion of preventing.

On the other hand, be set at by the length dimension that will laterally break away from the portion of preventing, can be housed in the size in the sprocket path of navigation on the pull head of the end that stops at the stop part side, can be when making pull head stop at the end of stop part side, to laterally break away from the portion of preventing and be housed in the pull head and make it not in sight, so can improve the aesthetic property of slide fastener.

In addition, slide fastener of the present invention has for the elastic deformation amount that will laterally break away from the portion of preventing and is limited in limit deformation mechanism in the prescribed limit.

For example be subjected under the situation of lateral pull at the state of closure at the 1st fastener stringer and the 2nd fastener stringer, (separately direction) pulls by laterally for the 1st chain belt and the 2nd chain belt, laterally breaks away from the portion that prevents and carries out strain in the mode to the last lower flange lateral bending song of pull head.

At this moment, if slide fastener does not have limit deformation mechanism, it is significantly crooked and contact with the last lower flange (particularly being configured in the shoulder oral-lateral of lower flange and the flange portion (the following rake that this flange portion is called lower flange) that tilts) of pull head then laterally to break away from the portion of preventing, prevent from being somebody's turn to do horizontal disengaging that portion was applied with bigger load to the rake of flange sometimes in addition.Can expect in this case, make such masterpiece that pull head rearward slides be used for pull head, thus the direction that the chain denture of the intention ground pull head that runs counter to the user about make separates slide, thereby about the chain denture begin from the end of stop part side to separate.

For this point, slide fastener of the present invention is by having limit deformation as described above mechanism, thereby be subjected under the situation of lateral pull at the 1st fastener stringer that is in closure state and the 2nd fastener stringer, even laterally break away from and prevent that portion is to the last lower flange side strain of pull head, can prevent that also this laterally breaks away from the portion that prevents and contacts with the rake that should go up lower flange, even perhaps both contact, also can reduce to put on the load of the rake of lower flange.As a result, can prevent that pull head runs counter to user's intention ground along the detaching direction slip of chain denture, thereby can stably keep the state of the 1st fastener stringer and the 2nd fastener stringer closure.

In addition, in slide fastener of the present invention, can not dispose slit as described above in the horizontal portion of preventing that breaks away from yet, but laterally breaking away from the portion's of preventing configuration through-hole section and constituting above-mentioned narrow width part.Even constituting like this under the situation of the narrow width part that laterally breaks away from the portion that prevents, also can make horizontal disengaging prevent that portion from easily carrying out strain along the bandwidth direction making the 1st fastener stringer and the 2nd fastener stringer when frangible portion begins to separate.

In addition, in slide fastener of the present invention, be set at less than the size at the band both forward and reverse directions that laterally breaks away from the portion that prevents laterally breaking away from the size in the bandwidth direction that prevents the narrow width part in the portion.Thus, the chain denture about making begins to separate from frangible portion and extracts horizontal disengaging when preventing portion from the sprocket path of navigation of pull head, can make the horizontal disengaging portion of preventing carry out strain reliably and is extracted swimmingly.

In addition, in slide fastener of the present invention, the last lower flange of pull head comprises: parallel portion, and it is configured in the back oral-lateral of pull head in parallel with each other; Rake, the interval between the last lower flange about it makes is gone and is increased gradually towards shoulder mouth, in addition, laterally breaks away from the narrow width part of the portion that prevents, be configured in the last lower flange on the pull head of the end that stops at the stop part side rake in the scope of strip length direction.

Thus, be subjected to lateral pull in the end by the stop part side of the 1st fastener stringer and the 2nd fastener stringer, and prevent that from laterally breaking away from portion is applied with under the situation of load the flange of pull head, this load mainly puts on the parallel portion of flange along the bandwidth direction.Therefore, can make this load be difficult for bringing out and make pull head along the power of the detaching direction slip of chain denture, stably keep the closure state of the 1st fastener stringer and the 2nd fastener stringer so can keep the halted state of pull head.

In addition, in slide fastener of the present invention, laterally disengaging prevents that portion has the plane with the stop part facing sides.Thus, the chain denture about making can suppress laterally to break away from the guide post that prevents portion and pull head and stop part etc. and interfere when frangible portion begins to separate, and can be more swimmingly from the sprocket path of navigation of pull head extract this laterally disengaging prevent portion.

In slide fastener of the present invention, laterally break away from the portion of preventing and have to the outstanding protuberance of the 1st chain belt of a side.In addition, dispose pseudo-sprocket between the stop part of the 1st chain belt and chain denture, this puppet sprocket comprises: main part, and it is fixed in the 1st chain belt; Head, its autonomous body prevents from extending between portion and the chain denture to the horizontal disengaging of the 2nd fastener stringer of opposite side, and this head can prevent the protuberance sliding-contact of portion with horizontal disengaging.

Thus, even make pull head stop at that slide fastener is subjected to lateral pull under the state of end position of stop part side, also can utilize pseudo-sprocket to prevent that pulling out horizontal disengaging from the sprocket path of navigation of pull head via deutostoma prevents portion, thereby the chain denture about can preventing begin to separate from the end of stop part side.

On the other hand, chain denture about making begins to separate from frangible portion and extracts horizontal disengaging when preventing portion from the deutostoma of pull head, by utilizing horizontal disengaging to prevent that the protuberance of portion from pushing pseudo-sprocket, can make the ground rotation of pseudo-sprocket relativity, guarantee for laterally breaking away from the gap that the portion of preventing passes through at the deutostoma of pull head.Thus, can extract horizontal disengaging swimmingly via deutostoma from the sprocket path of navigation of pull head and prevent portion.

In addition, in slide fastener of the present invention, above-mentioned stop part has only portion, and the portion of should ending has than the guide post of pull head and the size that runs through the big bandwidth direction of width between the last lower flange, and the portion of should ending has the pull head fastening portion of fastening pull head with the guide post butt of pull head.In addition, pull head fastening portion constitute can be along bandwidth direction strain.

Thus, in order to make the 1st fastener stringer and the 2nd fastener stringer closed and when making pull head slide into front position with the stop part butt, the pull head fastening portion of stop part and the guide post butt of pull head, thus pull head stably can be remained on its stop position.Thereby, when under the state of the 1st fastener stringer and the 2nd fastener stringer closure, when the end of the stop part side of slide fastener has been subjected to lateral pull, make pull head along the power that the detaching direction of chain denture slides even effect has, also can utilize pull head fastening portion fastening pull head and hinder the slip of pull head.

In addition, at the state that is held in pull head fastening portion from pull head, operate this pull head and when this pull head is slided along the detaching direction of chain denture, pull pull head energetically by the detaching direction along the chain denture, can make the guide post pushing pull head fastening portion of pull head and make this pull head fastening portion carry out strain, thereby can remove the hold mode of the pull head that is obtained by pull head fastening portion, pull head is slided swimmingly along the detaching direction of chain denture.

Description of drawings

Fig. 1 is the front view of schematically representing the slide fastener of embodiments of the present invention.

Fig. 2 is illustrated in the schematic diagram that under the situation of this slide fastener pull head is remained in the state of stop part.

Fig. 3 is the schematic diagram of the state after the chain denture about when being illustrated in the chain denture that makes slide fastener and beginning to separate from frangible portion separates.

The schematic diagram of Fig. 4 state that to be expression pull head sliding-contact body deviate from from the deutostoma of pull head.

The schematic diagram of Fig. 5 state that to be expression pull head sliding-contact body deviate from from the deutostoma of pull head.

Fig. 6 is the stereogram that expression is sewed with the sport pants of this slide fastener.

Fig. 7 is the schematic diagram of the variation of expression pull head sliding-contact body.

Fig. 8 is the front view of schematically representing the slide fastener of variation of the present invention.

Fig. 9 is the front view of schematically representing slide fastener in the past.

The specific embodiment

Below, the preferred embodiment that present invention will be described in detail with reference to the accompanying.In addition, the present invention is not limited to the embodiment of following explanation fully, as long as have the structure identical in fact with the present invention and can obtain the action effect identical with the present invention, then can carry out various changes.

For example in the following embodiments, fastener stringer configuration stop part on the right side, and the fastener stringer configuration in the left side laterally breaks away from the portion of preventing and constitutes slide fastener, but in the present invention, also can laterally break away from the portion that prevents in the fastener stringer configuration on right side, and constitute slide fastener at the fastener stringer configuration stop part in left side.

In addition, under the situation of slide fastener of the present invention, about the chain denture can be to be constituted by a plurality of independently synthetic resin zipper sprocket processed of injection molded in chain belt as described later, perhaps also can be that the continuous zipper sprocket that forms by monofilament is configured as helical form or zigzag constitutes.

Here, Fig. 1 is the front view of schematically representing the slide fastener of embodiments of the present invention, and Fig. 2 is illustrated in the schematic diagram that under the situation of this slide fastener pull head is remained in the state of stop part.In addition, in Fig. 2 and Fig. 3～Fig. 5 described later, only represent pull head with section, prevent the position relation between the portion in order to distinguish the stop part, pseudo-sprocket and the horizontal drawing that are housed in the pull head easily.

In addition, in the following description, be fore-and-aft direction with the strip length direction dictates of chain belt, particularly the direction setting that will pull head be slided for the engagement of the chain denture about making is the place ahead, and the direction setting that will pull head be slided for the chain denture is separated is the rear.In addition, be left and right directions with the bandwidth direction dictates of chain belt, the right side that the left side of the observer when observing slide fastener from face side as shown in Figure 1 is set at left, observer is set at right-hand.In addition, the band both forward and reverse directions of chain belt is defined as above-below direction, a side that will dispose the pulling-on piece of pull head with respect to the belt surface of chain belt is set at the top, and an opposite side with this direction is set at the below.

The slide fastener 1 of present embodiment comprises: about become a pair of fastener stringer 10a, 10b, they have chain denture 12 at the band side edge part of facing mutually that becomes a pair of chain belt 11a, 11b; Stop part 20 and pseudo-sprocket 25, they are installed in the upper end of fastener stringer (the 1st fastener stringer) 10a on right side along chain denture 12; Laterally break away from the portion 30 that prevents, it is installed in the upper end of fastener stringer (the 2nd fastener stringer) 10b in left side along chain denture 12; Separate inlay 40, the fastener stringer 10a about it is configured in, the bottom of 10b; And pull head 50, it is configured to and can slides along chain denture 12.

In addition, the pull head 50 of the slide fastener 1 of formation present embodiment has the structure identical in fact with the pull head that used in the past.

That is, the pull head in the present embodiment 50 comprises pull head main body 51 and the pulling-on piece 52 that can be held in pull head main body 51 rotationally.In addition, pull head main body 51 comprises upper flange 53, lower wing plate 54, guide post 55 that the leading section of this upper flange 53 and lower wing plate 54 is linked up, from the left and right sides lateral margin of upper flange 53 and lower wing plate 54 extend to close mutually direction arrange about last lower flange 56 and the pulling-on piece erection column 57 that founds the upper surface of being located at upper flange 53 with the shape of door type.In addition, the pull head 50 that adopts in the present invention also can be for example in upper flange 53 and lower wing plate 54 left and right sides lateral margin of arbitrary wing plate dispose the pull head of flange.

Shoulder mouth about the front end of this pull head main body 51 is formed with across guide post 55, is formed with deutostoma in the rear end of pull head main body 51 between the shoulder mouth about this.In addition, between upper flange 53 and lower wing plate 54, be formed with the sprocket path of navigation 58 of the roughly Y font of shoulder mouth about being communicated with and deutostoma.

In addition, on the left and right sides sidepiece that is disposed at pull head main body 51 between the lower flange 56, be formed with and run through the gap for the chain belt that chain belt 11a, 11b run through.In addition, under the situation of this pull head 50, last lower flange 56 comprises: parallel portion 56a, and it is configured in the back oral-lateral of pull head 50 in parallel with each other; Rake 56b, its front end from this parallel portion 56a extends out, and the interval that the last lower flange about being configured to make is 56 increases gradually along with forwards going.

Fastener stringer 10a, 10b about in the present embodiment comprises chain belt 11a, 11b and is configured in plastic a plurality of zipper sprockets 13 of band side edge part.About each chain belt 11a, 11b comprise: the band main part, it is made into or weaves into band shape in a narrow margin, can be sewn on goods (for example sport pants 60 described later) and the sprocket installation portion (band side edge part) of band slide fastener, it is used for installing for zipper sprocket 13.In addition, the chain belt side edge by sprocket installation portion side on chain belt 11a, 11b disposes heart yearn portion 14.

About chain belt 11a, 11b on, have on the sprocket installation portion of heart yearn portion 14, utilize injection molded to be disposed with a plurality of plastic zipper sprockets 13 along the strip length direction, utilize this a plurality of zipper sprockets 13 to form chain dentures 12.In addition, in the present invention, the material of zipper sprocket 13 is unqualified, for example can suitably adopt synthetic resin such as polyacetals, polypropylene, polybutylene terephthalate (PBT), nylon and Merlon.

In this case, each zipper sprocket 13 comprises and is oblong engagement head 13a, is fixed in the main part 13c of chain belt 11a, 11b and forms the neck 13b that attenuates between engagement head 13a and main part 13c in the mode of clamping heart yearn portion 14.

In addition, under the situation of the slide fastener 1 of present embodiment, be provided with the frangible portion 15 that the engagement force of the chain denture 12 about making disappears locally at the central portion of the strip length direction (fore-and-aft direction) of chain denture 12.Replace comprising the common zipper sprocket 13 of engagement head 13a, neck 13b and main part 13c, and about the sprocket installation portion of chain belt 11a, 11b respectively install 2 and will mesh that head 13a removes and the zipper sprockets that only possess main part 13c and neck 13b, thereby form this frangible portion 15.

Can be by the frangible portion 15 of being located at this chain denture 12 be applied lateral pull, easily draw back chain denture 12 at these frangible portion 15 places along left and right directions, in addition, can be from this frangible portion 15, forwards and the rear, the engagement of the zipper sprocket 13 about removing successively and chain denture 12 is separated gradually.

The stop part 20 of present embodiment is installed in the sprocket installation portion with heart yearn portion 14 of the chain belt 11a on right side.This stop part 20 comprises be used to what make that pull head 50 stops to slide and the 1st ends portion 21 and be configured in the 1st and end the 2nd between portion 21 and the chain denture 12 and end portion 22, the above-mentioned the 1st end portion 21 and the 2nd only portion 22 be by being fixed in this chain belt 11a's in chain belt 11a with the synthetic resin injection molded of zipper sprocket 13 identical materials.

In the stop part 20 the 1st ends portion 21 and comprises from the rectangular main part 21a of top view and the 21b of the portion that stops that forms in autonomous body 21a side-prominent mode in the chain belt.The 1st main part 21a that ends portion 21 is set to less than the width that runs through between the guide post 55 on the pull head 50 and the last lower flange 56 in the size on the bandwidth direction (width dimensions), and the 1st main part 21a that ends portion 21 forms the part that can make main part 21a and enters in the sprocket path of navigation 58.

In addition, the 1st 21b of the portion that stops that ending portion 21 forms, and when the part of main part 21a enters in the sprocket path of navigation 58, stops last lower flange 56 butts of the 21b of portion and pull head 50, can stop the 21b of portion and last lower flange 56 butts by this, make pull head 50 stop to slide.

In the stop part 20 the 2nd ends portion 22 and comprises the fixed part 22a that is fixed in chain belt 11a and the pull head fastening 22b of portion that extends out to the chain belt outside of this fixed part 22a certainly.It is rectangular when the 2nd fixed part 22a that ends portion 22 forms and observes from face side, the side edge of the chain belt inboard of this fixed part 22a (right side ora terminalis) forms, end portion 22 and enter pull head 50 and when being applied in the sprocket path of navigation 58 from the shoulder mouth of pull head 50 when the 2nd, with the sliding-contact edge portion of last lower flange 56 sliding-contacts of pull head 50.The 2nd gauge (size of above-below direction) that ends the fixed part 22a place in the portion 22 is set at the interval of running through the gap greater than the chain belt of pull head 50, and less than the interval between the inner surface of the inner surface of the upper flange 53 of pull head 50 and lower wing plate 54.

The 2nd pull head fastening 22b of portion that ends portion 22 forms has the gauge identical with fixed part 22a.In addition, the middle body at this pull head fastening 22b of portion is provided with along the 22c of hole portion that fore-and-aft direction runs through.By making the pull head fastening 22b of portion have the 22c of hole portion, can make this pull head fastening 22b of portion to carry out strain along the mode of bandwidth direction compression at least.

In the present embodiment, the 2nd ends the full-size on the bandwidth direction of portion 22, namely, the full-size of facing mutually from the sliding-contact edge portion of fixed part 22a to the pull head fastening fastener stringer 10b 22b of portion and the left side on the bandwidth direction in the face of side edge part (the left side side edge part of the pull head fastening 22b of portion) is set at greater than the width that runs through between the guide post 55 in the sprocket path of navigation 58 of pull head 50 and the last lower flange 56.

At this, the width that runs through between the guide post 55 of pull head 50 and the last lower flange 56 is interval between guide post 55 and the last lower flange 56, distance air line distance the most in short-term under the situation that refers to especially link up between with the internal face of straight line with the sidewall of guide post 55 and last lower flange 56.

In addition, the outer peripheral face at this pull head fastening 22b of portion comprises the 1st side wall surface 22d, the 2nd side wall surface 22e and the 3rd side wall surface 22f at least.The 1st side wall surface 22d of the pull head fastening 22b of portion is configured to end portion 21 and face mutually with the 1st, and with the front end face configuration of fixed part 22a at grade.

The 2nd side wall surface 22e of the pull head fastening 22b of portion and the 1st side wall surface 22d configuration continuously mutually, the 2nd side wall surface 22e forms the level and smooth flexure plane that bloats laterally.By disposing the 2nd side wall surface 22e at the pull head fastening 22b of portion, under the situation that pull head 50 is forwards slided towards stop part 20, the 2nd end portion 22 in sprocket path of navigation 58 from the shoulder mouth of pull head 50 backward oral-lateral move, further behind the pull head fastening 22b of portion elastic reset, make the deutostoma side end fastening of guide post 55 of pull head 50 in the 2nd side wall surface 22e, thereby can keep the halted state (with reference to Fig. 2) of pull head 50.

In addition, by making the 2nd side wall surface 22e form bending, for example when the state that makes pull head 50 from the deutostoma side end fastening of the guide post 55 that makes pull head 50 in the 2nd side wall surface 22e begins to slide to chain denture 12 detaching directions (rear), can make guide post 55 sliding-contacts of the 2nd side wall surface 22e and pull head 50, so that the 2nd end portion 22 and promoted the strain of the pull head fastening 22b of portion by the mode along the compression of bandwidth direction, help the 2nd to end portion 22 and enter between the guide post 55 and last lower flange 56 of pull head 50.

The 3rd side wall surface 22f of the pull head fastening 22b of portion and the 2nd side wall surface 22e form mutually continuously, the 3rd side wall surface 22f is configured to make the 2nd size of ending the bandwidth direction of portion 22 (that is, the side edge part of facing mutually from the sliding-contact edge portion of fixed part 22a to the pull head fastening fastener stringer 10b 22b of portion and the left side is in the size of bandwidth direction) to reduce gradually along with rearward going.

By disposing the 3rd side wall surface 22f at the pull head fastening 22b of portion, for example in that forwards being slided, pull head 50 make the 2nd to end portion 22 when the shoulder mouth of pull head 50 enters in the sprocket path of navigation 58, can make guide post 55 sliding-contacts of the 3rd side wall surface 22f and pull head 50, and make the 2nd to end portion 22 and enter into swimmingly in the sprocket path of navigation 58, and can be so that the 2nd end portion 22 is promoted the pull head fastening 22b of portion by the mode along the compression of bandwidth direction strain.

On the fastener stringer 10a on right side, between stop part 20 and chain denture 12, dispose pseudo-sprocket 25.Particularly in the present embodiment, pseudo-sprocket 25 is configured in when making pull head 50 and the 1st end portion's 21 butts this pull head 50 when being in the state (Fig. 2) that has stopped, and pseudo-sprocket 25 can seal the position of a part of the deutostoma of pull head 50.In addition, pseudo-sprocket 25 comprises that described later horizontal disengaging on the main part 25a that is fixed in chain belt 11a and the autonomous body 25a fastener stringer 10b to the left prevents the head 25b of extension between portion 30 and the chain denture 12.

In this case, the head 25b of pseudo-sprocket 25 has the sliding contact surface that can prevent protuberance described later 33 sliding-contacts of portion 30 with the horizontal disengaging of the fastener stringer 10b that is disposed at the left side.In addition, this head 25b forms, the part of rear side disappearance, constitute not can with zipper sprocket 13 engagements of the front end of the chain denture 12 that is configured in the left side.

The horizontal disengaging of fastener stringer 10b that is disposed at the left side of present embodiment prevents that portion 30 is configured in the front of chain denture 12 in the mode of facing mutually with stop part 20.Should laterally break away from and prevent that portion 30 from being by being fixed in chain belt 11b's in chain belt 11b with the synthetic resin injection molded of zipper sprocket 13 identical materials.

Laterally break away from that to prevent that portion 30 from forming along the strip length direction rectangular roughly rectangular-shaped.Thus, can guarantee greatlyyer with the contact area of chain belt 11b with laterally breaking away from the portion of preventing 30, prevent that portion 30 is with respect to chain belt 11b strength of fixation thereby increase laterally to break away from.In addition, this horizontal disengaging prevents that portion 30 is configured to be embedded with in inside the heart yearn portion 14 of chain belt 11b.

Thus, can utilize horizontal disengaging to prevent 30 protection heart yearn portions 14 of portion, particularly, laterally disengaging prevents that portion 30 from forming more longly along the strip length direction, more can protect heart yearn portion 14 in longer scope.In addition, laterally disengaging prevents that portion 30 from forming cladding core wire portion 14, thereby can be firmly fixed at chain belt 11b more with laterally breaking away from the portion of preventing 30, makes horizontal disengaging prevent that portion 30 is difficult for coming off from chain belt 11b.

In the present embodiment, laterally breaking away from the integral part except slit 31 described later that prevents portion 30, be set at the gauge that laterally breaks away from the band both forward and reverse directions that prevents portion 30 constant, in addition, this gauge that laterally breaks away from the band both forward and reverse directions that prevents portion 30 is set at, the interval of running through the gap than chain belt is big, and littler than the interval between the inner surface of the inner surface of the upper flange 53 of pull head 50 and lower wing plate 54, above-mentioned chain belt runs through the gap and is formed on extending the upper flange that arranges and extend between the lower flange 56 of settings from lower wing plate 54 from upper flange 53 of pull head 50.

By making horizontal disengaging prevent that portion 30 has such gauge, can make horizontal disengaging prevent that portion 30 is applied in the sprocket path of navigation 58 of pull head 50 swimmingly.In addition, by make horizontal disengaging prevent portion 30 have the chain belt that is set to than pull head 50 run through the interval in gap big, be used for preventing the gauge that laterally breaks away from, in the time will laterally breaking away from the portion of preventing 30 and be housed in the sprocket path of navigation 58 of pull head 50 (, about fastener stringer 10a, when 10b is in closure state), even slide fastener 1 is subjected to lateral pull, also can make last lower flange 56 that horizontal disengaging prevents portion 30 and pull head 50 butt reliably.Thereby, laterally break away from and prevent that portion 30 from can not run through the gap via chain belt from the sprocket path of navigation 58 of pull head 50 and being drawn out, can stably remain in the sprocket path of navigation 58 laterally breaking away from the portion of preventing 30.

In addition, in the present embodiment, laterally break away from prevent portion 30 not as aftermentioned strain become under the forniciform situation, laterally break away from prevent portion 30 be configured to parallel to each other by the left surface of chain belt inboard with the right flank of facing mutually with stop part 20 (except the protuberance 33 described later), become interval between this left and right side, laterally break away from the width dimensions on the bandwidth direction that prevents portion 30, be set to than between the guide post 55 of pull head 50 and the last lower flange 56 to run through width little.

In this case, laterally break away from and prevent that the width dimensions of portion 30 is set at bigger than the heart yearn portion 14 of chain belt 11b, but end under the situation of portion 22 (with reference to Fig. 2) as described later pull head 50 being remained in the 2nd, laterally break away from and prevent that portion 30 can be applied in the size that is formed in the 2nd gap of ending between the last lower flange 56 in left side of portion 22 and pull head 50.Particularly, under the situation of present embodiment, laterally break away from the size maximum in the bandwidth direction that prevents portion 30, be set at littler than the size maximum in the bandwidth direction of zipper sprocket 13.

Thus, for example the chain denture 12 about making from frangible portion 15 begin to separate and with about fastener stringer 10a, when 10b draws back, can make horizontal disengaging prevent portion 30 be formed at the 2nd end portion 22 and pull head 50 the left side on pass through in the gap between the lower flange 56, from the sprocket path of navigation 58 of pull head 50 via deutostoma extract swimmingly this laterally disengaging prevent portion 30.

In addition, the back-end location that laterally breaks away from the strip length direction prevent portion 30 is set at, when stopping when making pull head 50 and the 1st of stop part 20 end portion's 21 butts, the rear end is positioned at the position roughly the same with the position of the deutostoma of this pull head 50.

In addition, in order to stop making pull head 50 and the 1st of stop part 20 end portion's 21 butts, make horizontal disengaging prevent the front position of the strip length direction of portion 30, be positioned at than the back-end location of the guide post 55 of this pull head 50 position by shoulder oral-lateral (front side), preferably above-mentioned front position is set at, make horizontal disengaging prevent that portion 30 is long along the last lower flange 56 of strip length direction ratio pull head 50, above-mentioned front position is alignd with the 1st front position of ending portion 21 when more preferably being set at fastener stringer 10a, the 10b closure about making.

Horizontal disengaging in the present embodiment prevents portion 30 by having the size of this strip length direction, can stably guarantee laterally to break away to prevent that portion 30 is with respect to chain belt 11b strength of fixation.In addition; can utilize this laterally to break away from and prevent that portion 30 from protecting the heart yearn portion 14 of chain belt 11b in the larger context; when particularly stopping making pull head 50 and the 1st of stop part 20 end portion's 21 butts; can prevent from being housed in last lower flange 56 butts or the friction of heart yearn portion 14 and pull head 50 in this pull head 50 reliably, thereby can prevent that heart yearn portion 14 is scratched, breakage.

In addition, as long as make horizontal disengaging prevent that portion 30 from forming longlyer along the strip length direction, in the time of just can stopping making pull head 50 and the 1st of stop part 20 end portion's 21 butts, prevent that with laterally breaking away from portion 30 is housed in the sprocket path of navigation 58 of pull head 50 more deeply.Therefore, even be in closure state about fastener stringer 10a, 10b be subjected to lateral pull, also can prevent from effectively laterally breaking away from preventing that portion 30 is drawn out from the sprocket path of navigation 58 of pull head 50, the fastener stringer 10a about can stably keeping, the closure state of 10b.

And, the size of the strip length direction by will laterally breaking away from the portion of preventing 30 is set at, the front position that makes horizontal disengaging prevent portion 30 is alignd with the 1st front position of ending portion 21, and be set at when stopping making pull head 50 and the 1st of stop part 20 end portion's 21 butts, to laterally break away from the portion of preventing 30 and accommodate (hiding) in the sprocket path of navigation 58 of pull head 50, and can improve the aesthetic property of slide fastener 1.

The horizontal disengaging of present embodiment prevents that portion 30 has respectively in face side and the reverse side of chain belt 11b: 2 slits 31, and they form along the incision of bandwidth direction from the left surface of chain belt inboard; 2 narrow width parts 32 by forming this slit 31, constitute the size of the bandwidth direction of these 2 narrow width parts 32 less; Protuberance 33, it is configured in the rearward end that horizontal disengaging prevents portion 30, and fastener stringer 10a to the right is outstanding.

In this case, form 2 slits 31 owing to prevent the left surface that becomes the chain belt inboard of portion 30 from horizontal disengaging, constituted 1 continuous face so should laterally break away from the part except protuberance 33 of the right flank that prevents portion 30, particularly prevent portion 30 not along under the situation of bandwidth direction strain in horizontal the disengaging, this right flank constitutes 1 plane.

To be disposed at horizontal disengaging and to prevent that 2 narrow width parts 32 of portion 30 from constituting in order to make, it is in the minimum dimension of bandwidth direction, for laterally breaking away from below half of the size in the bandwidth direction that prevents portion 30 part of slit 31 and protuberance 33 (dispose except), preferably above-mentioned narrow width part 32 is constituted than horizontal disengaging and prevent that the size of band both forward and reverse directions of portion 30 is little.Be disposed at horizontal disengaging by the narrow width part 32 that will have this width dimensions and prevent portion 30, this is laterally broken away from prevent that portion 30 is to carry out strain along the mode of bandwidth direction bending.

In addition, prevent that with laterally breaking away from 2 narrow width parts 32 that portion 30 has are configured to, when stopping making pull head 50 and the 1st of stop part 20 end portion's 21 butts, 2 narrow width parts 32 are positioned at respect to this pull head 50 and are positioned at than the parallel portion 56a of last lower flange 56 position of side (in other words, in the scope of the length direction of the rake 56b of last lower flange 56) on the front.In addition, it is bigger than the size in the bandwidth direction of narrow width part 32 that the horizontal disengaging in the present embodiment prevents that the size at the band both forward and reverse directions of portion 30 is set at, and prevents that portion 30 from constituting difficult edge band both forward and reverse directions and carrying out strain so laterally break away from.

Be disposed at horizontal disengaging and prevent that 2 slits 31 of portion 30 are set at the size of regulation, so that narrow width part 32 has the size of bandwidth direction as described above, in the part that is provided with above-mentioned slit 31, the part of chain belt 11b and heart yearn portion 14 exposes.In addition, in the open side end (end in left side) of each slit 31, dispose a pair of extension 31a of one-tenth that stretches out along the strip length direction in the mode of the slit width (interval of strip length direction) that dwindles this open side end.

By in this wise at the open side end of slit 31 configuration extension 31a, for example the chain denture 12 about making begins to separate from frangible portion 15 and extracts horizontal disengaging when preventing portion 30 in the sprocket path of navigation 58 of pull head 50, the last lower flange 56 that can suppress pull head 50 embeds laterally to break away from and prevents the slit 31 of portion 30, and makes horizontal disengaging prevent that portion 30 from being tangled by pull head 50.

In addition, horizontal disengaging in present embodiment prevents in the portion 30, dispose into a pair of extension 31a in the open side end of slit 31, thereby this elastic deformation amount who becomes a pair of extension 31a formation will laterally break away from the portion of preventing 30 is limited in the limit deformation mechanism in the prescribed limit.Namely, make horizontal disengaging prevent that portion 30 is when being the mode strain of concavity bending to the chain belt inboard, can make horizontal disengaging prevent portion 30 easily strain against each other to a pair of extension 31a of the one-tenth of the open side end that is configured in each slit 31 till, but along with a pair of extension 31a butt of the one-tenth of each slit 31, can limit lateral break away from the elastic deformation amount that prevent portion 30, prevent not further strain of portion 30 so that laterally break away from.

Thus, for example be in closure state about fastener stringer 10a, the leading section of 10b is subjected to lateral pull, and make horizontal disengaging prevent that portion 30 from having carried out under the situation of strain in the mode to the last lower flange 56 lateral bending songs of pull head 50, though laterally break away from and prevent portion 30 strain in the sprocket path of navigation 58 of pull head 50, but can prevent that this horizontal disengaging from preventing that portion 30 from contacting with the rake 56b of the last lower flange 56 of pull head 50, even perhaps should laterally break away from and prevent that portion 30 from contacting with the rake 56b of last lower flange 56, also can reduce to put on the load of this rake 56b.

Being configured in horizontal disengaging, to prevent that the protuberance 33 of the rearward end of portion 30 is configured to along bandwidth direction fastener stringer 10a to the right outstanding, and the gauge of this protuberance 33 is set at horizontal disengaging and prevents the size that the main part of portion 30 is identical.In addition, when laterally disengaging prevents portion 30 from the face side observation, the lateral margin that fastener stringer 10a protuberance 33 and the right side faces mutually forms circular-arc, and the side face of this protuberance 33 constitutes and can and/or be disposed at the sliding contact surface of pseudo-sprocket 25 sliding-contacts of the fastener stringer 10a on right side with the guide post 55 of pull head 50.

In the present embodiment, for example for unzip 1 and make be held in the 2nd pull head 50 that ends portion 22 rearward slides with about 12 separation of chain denture the time, with the deutostoma side end of the guide post 55 of pull head 50 and the mode that laterally breaks away from protuberance 33 butts that prevent portion 30, pull head 50 is slided, thereby can assist the action that chain denture 12 is separated to the left and right, make be in engagement about chain denture 12 separate swimmingly.

On the other hand, chain denture 12 about making as described later begins to separate from frangible portion 15, and in the sprocket path of navigation 58 of pull head 50, extract horizontal disengaging when preventing portion 30, laterally break away from the pseudo-sprocket 25 of protuberance 33 pushings that prevents portion 30, make 25 rotations of this puppet sprocket and can prevent the opening (space) that portion 30 passes through for horizontal disengaging at the back interruption-forming of pull head 50, thereby can make horizontal disengaging prevent that portion 30 from deviating from (with reference to Fig. 3～Fig. 5) swimmingly via the deutostoma of pull head 50.

In the present embodiment, the separation inlay 40 of the bottom of fastener stringer 10a, 10b about being configured in, comprising that the 1st of the fastener stringer 10a that is disposed at the right side opens from intercalation member 41(is also referred to as the case rod sometimes) and be disposed at the left side fastener stringer 10b the 2nd open from intercalation member 42(be also referred to as plunger sometimes).

The 1st open from intercalation member 41 and the 2nd open from intercalation member 42 with from about chain denture 12 the rearward end place with it continuous mode be configured to stride the chain belt tow sides of chain belt 11a, 11b, the synthetic resin injection molded of the material by will be identical with zipper sprocket 13 is in chain belt 11a, 11b,, form the above-mentioned the 1st and open from intercalation member 41 and the 2nd and open from intercalation member 42 centered by chain belt 11a, 11b and symmetrical manner by the shape of the shape of chain belt face side and chain belt reverse side.

The 1st opens and is configured to from chain denture 12 places continuously with it from intercalation member 41, and the 1st opens from intercalation member 41 and comprise: pull head maintaining part 41a, and it is fixed in chain belt 11a; Pivot ends the 41c of portion, and it rearward extends setting from pull head maintaining part 41a, forms thicklyer by stage portion 41b; Rib 41d, it ends the 41c of portion to the inboard extension setting of chain belt from pull head maintaining part 41a and pivot; Not shown concave part, its be located at pull head maintaining part 41a with the 2nd open the inner peripheral surface that the left surface faced mutually from intercalation member 42 and pivot end the 41c of portion.

Open on intercalation member 41 the 1st, when pull head maintaining part 41a constituted in that pull head 50 is rearward slided with stage portion 41b butt, this pull head maintaining part 41a can be inserted in the sprocket path of navigation 58 of pull head 50 and pull head 50 is remained state with stage portion 41b butt.

Pivot ends the 41c of portion and forms from pull head maintaining part 41a and rearward extend setting, further opens from intercalation member 42 lateral bending songs to the 2nd, and when observing this pivot from face side and end the 41c of portion, this pivot ends the 41c of portion and is roughly J-shaped.This pivot ends the 41c of portion and constitutes to have with the 2nd and open and ended the 42b of portion butt from intercalation member 42 described later by pivot and should be ended the inner peripheral surface that the 42b of portion rotation mode fastening freely should be ended the 42b of portion by pivot by pivot, and when pull head 50 is remained in pull head maintaining part 41a, end being formed with between the 41c of portion to open from the described later of intercalation member 42 for the 2nd at the deutostoma side end of pull head 50 and pivot and ended the moving space of pivot that the 42b of portion inserts by pivot.

The 2nd open from intercalation member 42 comprise the double-edged tabular main part 42a that is fixed in chain belt 11b, the angle part on the right side of the rearward end that is configured in main part 42a ended the 42b of portion by pivot, along the projecting strip part 42c of the left border portion configuration of main part 42a and the jut 42d that is configured in the leading section of main part 42a.

Open on intercalation member 42 the 2nd, main part 42a has and is set to the little gauge in interval that runs through the gap than the chain belt of pull head 50.Ended outstanding along the vertical direction cylindric of tow sides that the 42b of portion forms autonomous body 42a by pivot.This gauge that is ended the 42b of portion by pivot is set at chain belt than pull head 50, and to run through the interval in gap big, and littler than the interval of the above-below direction of the sprocket path of navigation 58 of this pull head 50.Jut 42d has engaging piece, with can with last distolateral zipper sprocket 13 engagements that are configured in of the chain denture 12 of the fastener stringer 10a on right side.

Employing have the as described above the 1st open from intercalation member 41 and the 2nd open from intercalation member 42 separate inlay 40, can from 2 kinds of following operations, at random be chosen in when making slide fastener 1 closed and open from 42 fastenings of intercalation member in the 1st fastening operation of opening from intercalation member 41 the 2nd.

Operate as the 1st fastening, what illustrate is, when making slide fastener 1 closure, do not make the 2nd to open and ended the sprocket path of navigation 58 of the 42b of portion by pull head 50 by pivot from intercalation member 42, insert this from the side of intercalation member 41 and ended the 42b of portion by pivot but open from the 1st, open from the operation of intercalation member 41 in the 1st thereby make this be ended the 42b of portion fastening by pivot.

Under the situation of carrying out the 1st fastening operation, at first, pull head 50 is opened from intercalation member 41 to the 1st slided, this pull head 50 is remained in pull head maintaining part 41a.Then, make the 2nd open from intercalation member 42 ended the 42b of portion by pivot, end the gap that forms between the 41c of portion and the pull head 50 from the pivot of intercalation member 41 and end the inner peripheral surface butt of the 41c of portion with pivot via opening the 1st.Thus, open from 42 fastenings of intercalation member the 2nd and open from intercalation member 41 in the 1st.

Then, make the 2nd to open from intercalation member 42 and rotate to be ended by pivot centered by the 42b of portion opening from intercalation member 41 to the 1st, open the 2nd and run through the gap from the main part 42a of intercalation member 42 via the chain belt of pull head 50 and be inserted in the sprocket path of navigation 58.Thus, with about chain denture 12 orientate as and can carry out stable position engaged.Subsequently, slide chain denture about making 12 engagements and make slide fastener 1 closure upward by making the pull head 50 that is held in pull head maintaining part 41a.

On the other hand, as the 2nd fastening operation, explanation be when making slide fastener 1 closed, to make the 2nd to open from the 42b of portion that ended by pivot of intercalation member 42 and open from the operation of intercalation member 41 in the 1st via sprocket path of navigation 58 fastenings of pull head 50.

Under the situation of carrying out the 2nd fastening operation, at first identical with above-mentioned the 1st fastening operation, pull head 50 is remained on pull head maintaining part 41a.Then, from the shoulder mouth of pull head 50 insert the 2nd open from intercalation member 42 ended the 42b of portion by pivot, make this be ended the 42b of portion by pivot and open the inner peripheral surface butt that ends the 41c of portion from the pivot of intercalation member 41 by the sprocket path of navigation 58 of this pull head 50 with the 1st.Thus, open from 42 fastenings of intercalation member the 2nd and to open from intercalation member 41 in the 1st, with about chain denture 12 orientate as and can carry out stable position engaged.Subsequently, slide chain denture about making 12 engagements and make slide fastener 1 closure upward by making the pull head 50 that is held in pull head maintaining part 41a.

Next, illustrate in the slide fastener 1 of the present embodiment with above-mentioned the sort of structure, from about the operation of the state that drawn back of fastener stringer 10a, 10b when beginning to make slide fastener 1 closed.

At first, the 1st of operation separation inlay 40 is opened from intercalation member 41 and the 2nd and is opened from intercalation member 42, from above-mentioned 2 kinds of fastenings operation, select a fastening operation arbitrarily, make the 2nd to open from 42 fastenings of intercalation member and open from intercalation member 41 in the 1st, make subsequently pull head 50 upward (to stop part 20) slide.Thus, the chain denture 12 about can making enters sprocket path of navigation 58 successively from the shoulder mouth of pull head 50, and chain denture 12 engagements about making.

In addition, by pull head 50 is slid into and stop part 20 butts, continue about chain denture 12 after, make the pseudo-sprocket 25 of the fastener stringer 10a that is disposed at the right side and the horizontal disengaging of the fastener stringer 10b that is disposed at the left side prevent portion 30, enter in the sprocket path of navigation 58 from the shoulder mouth of pull head 50, subsequently, after pseudo-sprocket 25, make the 2nd of stop part 20 end portion 22 and the 1st and end portion 21 and enter into successively in the sprocket path of navigation 58 from the shoulder mouth of pull head 50.

At this moment, end portion 22 when continuing in sprocket path of navigation 58 that oral-lateral relatively moves backward when the 2nd, the 2nd ends the sliding-contact edge portion and last lower flange 56 sliding-contacts that are configured in the right side of pull head 50 of portion 22, and the 2nd pull head fastening 22b of portion that ends portion 22 carries out between strain and the last lower flange 56 by guide post 55 and right side.

And, as shown in Figure 2, be disposed at the 1st and end the 21b of the portion that stops and last lower flange 56 butts of pull head 50 of portion 21 by making, can make pull head 50 stop slip.In addition, the 1st end the 21b of the portion that stops of portion 21 and pull head 50 in lower flange 56 butts, perhaps this stop the 21b of portion be about to pull head 50 on during lower flange 56 butts, the 2nd pull head fastening 22b of portion that ends portion 22 makes deutostoma side end and this pull head fastening 22b of portion butt of the guide post 55 of pull head 50 with elastic reset.Thus, can utilize the 2nd to end portion 22 and support reliably because of the 1st pull head 50 that stops of the effect of portion 21 only, and stably keep the halted state of pull head 50.

In addition, as shown in Figure 2, in the present embodiment, when utilizing the 2nd to end portion's 22 maintenance pull heads 50, the horizontal disengaging that is disposed at the fastener stringer 10b in left side prevents that portion 30 is in the state in the sprocket path of navigation 58 that is housed in pull head 50 fully.In addition, be disposed at the pseudo-sprocket 25 of the fastener stringer 10a on right side, be positioned at so that head that should puppet sprocket 25 with laterally break away from the position of a part that the protuberance 33 contacted states (the perhaps state of Jie Jining) that prevent portion 30 seal the deutostoma of pull head 50.

By carrying out above such operation, chain denture 12 integral body about can making from about the state engagement drawn back of fastener stringer 10a, 10b, and make slide fastener 1 closed fully.

In addition, in the slide fastener 1 of present embodiment, under the state that makes slide fastener 1 closure as described above, for example be applied with chain belt 11a, 11b about make when dividing the direction of opening to pull the lateral pull of chain belt 11a, 11b at the leading section that disposes stop part 20 to slide fastener 1, owing to be disposed at the 1st the ending portion 21 and the 2nd and end portion 22 and form chain belt than pull head 50 to run through the gap thick of fastener stringer 10a on right side, so can make the 1st to end portion 21 and the 2nd and end portion 22 and remain in the sprocket path of navigation 58 of pull head 50 with last lower flange 56 butts on the right side of pull head 50.

On the other hand, the horizontal disengaging that is disposed at the fastener stringer 10b in left side prevents the higher to the fixing constant intensity of chain belt 11b of portion 30, and laterally break away from and prevent portion 30 from forming chain belt than pull head 50 to run through the gap thick, so can make horizontal disengaging prevent that portion 30 from remaining in the sprocket path of navigation 58 of pull head 50 with last lower flange 56 butts in the left side of pull head 50.

Particularly, it is longer than the strip length direction size of 55 back-end location from the deutostoma to the guide post of pull head 50 that the horizontal disengaging of present embodiment prevents that portion 30 from forming, and longer than the strip length direction size of the last lower flange 56 of pull head 50, so can make last lower flange 56 that horizontal disengaging prevents portion 30 and pull head 50 butt and stably remaining in the sprocket path of navigation 58 of pull head 50 reliably.

Like this, even slide fastener 1 is subjected to lateral pull, ends portion 22 and laterally break away from and prevent that portion 30 from stably remaining in the sprocket path of navigation 58 of pull head 50 by ending portion 21, the 2nd with the 1st, also can prevent from being in engagement about chain denture 12 separate.In addition, at this moment, be disposed at the pseudo-sprocket 25 of fastener stringer 10a on right side and the horizontal disengaging that is disposed at the fastener stringer 10b in left side and prevent that the protuberance 33 of portion 30 is retained as contacted state each other, pseudo-sprocket 25 prevents from laterally breaking away from and prevents that portion 30 from deviating from via deutostoma from the sprocket path of navigation 58 of pull head 50.Therefore, the engagement of the chain denture 12 about can more stably keeping.

In addition, in the slide fastener 1 of present embodiment, as mentioned above, the horizontal disengaging of the fastener stringer 10b on the left of being disposed at prevents that portion 30 from disposing 2 narrow width parts 32.Therefore, leading section at slide fastener 1 has been subjected under the situation of lateral pull, about chain belt 11a, 11b pulled along the direction that is separated from each other, prevent that portion 30 from carrying out strain in the mode to the last lower flange 56 lateral bending songs in the left side of pull head 50 so be disposed at the horizontal disengaging of the fastener stringer 10b in left side.

At this moment, horizontal disengaging in the present embodiment prevents in the portion 30, because 2 narrow width parts 32 are configured in the position than the forward side of parallel portion 56a (shoulder oral-lateral) of the last lower flange 56 of pull head 50, so laterally disengaging prevents that portion 30 from mainly carrying out strain in the position than the forward side of parallel portion 56a.In addition, dispose into a pair of extension 31a in the open side end that laterally breaks away from each slit 31 that prevents portion 30, utilize this extension 31a to constitute horizontal disengaging is prevented the limit deformation mechanism that the elastic deformation amount of portion 30 limits, prevent that portion 30 can be more than the size of strain for regulation so that laterally break away from.Therefore, prevent portion 30 flange 56 side strains up and down even laterally break away from, also can come limit lateral to break away from and prevent portion's 30 further strains by making a pair of mutual butt of extension 31a of one-tenth that is disposed at each slit 31.

Thereby, when the leading section of slide fastener 1 has been subjected to lateral pull, though laterally break away from the parallel portion 56a butt that prevents portion 30 and the left side flange of pull head 50, but can break away from the strain that prevents portion 30 in the position limit lateral than the forward side of parallel portion 56a, prevent from laterally breaking away from preventing that portion 30 from contacting with the rake 56b of the last lower flange 56 of pull head 50, even perhaps laterally break away from and prevent that portion 30 from contacting with the rake 56b of last lower flange 56, also can reduce to put on the pushing force of this rake 56b.

Thus, though the parallel portion 56a of last lower flange 56 prevents that from laterally breaking away from portion 30 is subjected to pushing force, the rake 56b of flange is not vulnerable to prevent from horizontal disengaging the pushing force of portion 30.Therefore, even about fastener stringer 10a, the 10b last lower flange 56 that is subjected to lateral pull and makes pull head 50 by stop part 20 with laterally break away from the portion that prevents 30 pushings, make pull head 50 rearward (detaching direction of chain denture 12) such power of sliding also be difficult to act on pull head 50, the intention ground that can prevent pull head 50 to run counter to the user is removed by the 2nd and is ended the hold mode of 22 couples of pull head fastening 22b of portion of portion and rearward slide.Thereby, the engagement of the chain denture 12 about can more stably keeping.

Next, illustrate from pull head 50 being remained in the 2nd and end portion 22 and make the state (Fig. 2) of slide fastener 1 closure, make pull head 50 to the operation as the rear slip of the detaching direction of chain denture 12, and the action when fastener stringer 10a, 10b about drawing back.

In this case, hold be held in the 2nd end portion 22 pull head 50 pulling-on piece 52 and rearward pull pull head 50, make that to end portion 22 relatively mobile to the shoulder oral-lateral of pull head 50 with the 2nd of the deutostoma side end butt of the guide post 55 of pull head 50.At this moment, 55 pushings the 2nd of the guide post of pull head 50 end the pull head fastening 22b of portion of portion 22 and make this pull head fastening 22b of portion strain, and can make the 2nd to end between the last lower flange 56 on guide post 55 that portion 22 is applied in pull head 50 and right side.

Thus, will utilize the 2nd state that ends portion's 22 maintenance pull heads 50 to be disengaged, the chain denture 12 so pull head 50 is rearward slided swimmingly about making separates.And, after pull head 50 being slid into separate the end of inlay 40 sides, open from the 1st and to extract the 2nd of this separation inlay 40 from intercalation member 41 and open from intercalation member 42, thus fastener stringer 10a, 10b about can drawing back and open slide fastener 1.

Next, explanation ends portion 22 and makes under the state (Fig. 2) of slide fastener 1 closure from pull head 50 being remained in the 2nd in the slide fastener 1 of present embodiment, with frangible portion 15 be the chain denture 12 about starting point makes separate about drawing back fastener stringer 10a, 10b the time action.

In this case, by the frangible portion 15 of being located at chain denture 12 is applied for example lateral pull iso-stress, chain denture 12 about can making begins to separate from this frangible portion 15, fastener stringer 10a about making by the edge in addition, the direction that 10b is separated from each other pull fastener stringer 10a, 10b, can keep ending under the state of portion 22 pull head 50 being remained in the 2nd, the chain denture 12 about making is separated to leading section and rearward end successively.

And, after zipper sprocket foremost 13 engagement releasing each other of the chain denture 12 about will being disposed at, by the further fastener stringer 10b that pulls the left side, as shown in Figure 3, the pseudo-sprocket 25 that makes the horizontal disengaging of fastener stringer 10b that is disposed at the left side prevent that 33 pairs of the protuberances of portion 30 are disposed at the fastener stringer 10a on right side pushes.

Like this, pseudo-sprocket 25 is laterally broken away from prevents that the protuberance 33 of portion 30 from applying pushing force, thereby this puppet sprocket 25 is rotated from top view the time in the counterclockwise direction, and the back interruption-forming in pseudo-sprocket 25 sealings of the quilt of pull head 50 can prevent the space that portion 30 runs through for laterally breaking away from thus.Thus, Yi Bian make horizontal disengaging prevent portion 30 and pseudo-sprocket 25 sliding-contacts, prevent that the 30(of portion is with reference to Fig. 4 and Fig. 5 Yi Bian easily extract horizontal disengaging from sprocket path of navigation 58 via the space that is formed at deutostoma).

At this moment, owing to laterally break away from and prevent that portion 30 has narrow width part 32, prevent that portion 30 can be carrying out strain along the mode of bandwidth direction bending so laterally break away from, and the part except protuberance 33 that laterally breaks away from the right flank that prevents portion 30 constitutes 1 continuous face.Thereby, even will laterally break away from the portion of preventing 30 as described above forms longlyer along the strip length direction, also can make horizontal disengaging prevent that portion 30 from can carry out strain as required, and can be with the guide post 55 of pull head 50, be disposed at the 2nd the ending portion 22 and pseudo-sprocket 25 and collude and hang ground of fastener stringer 10a on right side, prevent that with laterally breaking away from portion 30 is applied in the sprocket path of navigation 58 of pull head 50 swimmingly, and extracted via the deutostoma of pull head 50.

In addition, for example under the slide fastener 1 with present embodiment is used in situation in the sport pants 60 as described later, when the chain denture 12 about making began to separate from frangible portion 15, Zuo Ce fastener stringer 10b was by the fastener stringer 10a tiltedly below pulling left with respect to the right side sometimes.Even under the situation of the fastener stringer 10b that pulls the left side so left below tiltedly, owing in the sprocket path of navigation 58 of pull head 50, extracting horizontal disengaging when preventing portion 30, laterally break away from and prevent that portion 30 from carrying out strain, end portion 22 and pseudo-sprocket 25 ground so also can not collude the guide post 55, the 2nd that is hung on pull head 50, extract this swimmingly via the deutostoma of pull head 50 and laterally break away from the portion 30 that prevents.

In addition, dispose into a pair of extension 31a in the open side end that laterally breaks away from the slit 31 that prevents portion 30, the slit width of open side end is dwindled.In addition, laterally break away from prevent portion 30 because of strain on the left side of pull head 50 lower flange 56 lateral bending songs situation under, the slit width of the open side end of slit 31 is extended the 31a of portion and further dwindles.

By in this wise the slit width of the open side end of slit 31 being dwindled, can extract horizontal disengaging from pull head 50 when preventing portion 30, stop the last lower flange 56 in the left side of pull head 50 to be sandwiched in horizontal disengaging and prevent in the slit 31 of portion 30.Thereby, in the present embodiment, can prevent the problems that last lower flange 56 because of pull head 50 is sandwiched in horizontal disengaging and prevents from producing in the slit 31 of portion 30 (for example since extract laterally break away from when horizontal disengaging prevents portion 30 prevent portion 30 collude be hung on lower flange 56, laterally break away from prevent portion 30 collude pull too at full tilt under the state that is hung on lower flange 56 laterally disengaging prevent portion 30 make horizontal disengaging prevent portion's 30 breakages or from problems such as chain belt 11b come off).

And, extract horizontal disengaging by the fastener stringer 10b that pulls the left side fully from pull head 50 and prevent portion 30, fastener stringer 10a, the 10b about can drawing back and open slide fastener 1.Like this, adopt the slide fastener 1 of present embodiment, by the frangible portion 15 of being located at chain denture 12 is applied lateral pull, and pull head 50 is not carried out slide, the chain denture 12 about just making separates easily and promptly and opens slide fastener 1 from this frangible portion 15.

With the slide fastener 1 of above such present embodiment preferably be used in as the goods that are stained with slide fastener, for example in the sort of sport pants 60 shown in Figure 6.At this, the sport pants 60 of the slide fastener 1 that present embodiment is installed are described.In addition, the goods that the band slide fastener of slide fastener 1 of the present invention is installed are not limited to sport pants 60, also slide fastener 1 of the present invention can be applied to other extensive stocks.

Use the raw material of retractility excellence to make sport pants shown in Figure 6 60.These sport pants 60 about two trouser legs portions 61 from an end of trousers waist side to the part of the other end of bottom of s trouser leg side, be sewed with the slide fastener 1 of present embodiment.In addition, observe slide fastener 1 for example shown in Figure 1 and slide fastener 1 shown in Figure 6, the length dimension of slide fastener 1 is different, but the practical structures of two slide fasteners 1 is all identical.

In this case, in order to be easy to carry out the operation of slide fastener 1, prevent that with horizontal disengaging the end (leading section) of a side of portion 30 is configured in the trousers waist side of sport pants 60 with the stop part 20 that disposes with slide fastener 1, the end (rearward end) that disposing of slide fastener 1 separated a side of inlay 40 is configured in the mode of the bottom of s trouser leg side of sport pants 60, and slide fastener 1 is installed on sport pants 60.In this case, make near the frangible portion 15 of the slide fastener 1 medium chain denture 12 of sport pants 60 is arranged on the knee of left and right sides trouser legs portion 61.

The chain denture 12 that this sport pants 60 constitute by each slide fastener 1 of the trouser legs portion 61 about will being disposed at separates, and fastener stringer 10a, 10b that the one-tenth of correspondence is a pair of draw back, thereby the trouser legs portion 61 of sport pants 60 is separated into sheet portion of predecessor and back body sheet portion.

About in the above-described manner about trouser legs portion 61 be sewed with the sport pants 60 of the slide fastener 1 of present embodiment, for example by making pull head 50 slide into the end of separation inlay 40 sides chain denture 12 is separated, draw back and separate the 1st of inlay 40 and open from intercalation member 41 and the 2nd and open from intercalation member 42, thereby draw back fastener stringer 10a, the 10b of each slide fastener 1, so can make sport pants 60 become the form that left and right sides trouser legs portion 61 is separated into sheet portion of predecessor and back body sheet portion from the form of trousers.In addition, make 12 engagements of chain denture by pull head 50 slips that make each slide fastener 1, the sport pants 60 that can make left and right sides trouser legs portion 61 be separated into sheet portion of predecessor and back body sheet portion revert to the form of trousers again.

Thereby, have at this kind sport pants 60 under the situation of form of trousers, can be put on or be taken off the samely with ordinary movement trousers in the past.In addition, under the situation that wears off sport pants 60, be the waist of trousers portion that elongates sport pants 60 mostly usually, so be easy to the leading section by stop part 20 sides of slide fastener 1 is applied lateral pull.

In this case, when the slide fastener 1 of present embodiment constitutes and stops making pull head 50 and the 1st end portion's 21 butts as described above, this pull head 50 is stably remained in the 2nd end portion 22, even the end (leading section) by stop part 20 sides of slide fastener 1 is subjected to lateral pull, can make pull head 50 also be difficult to act on pull head 50 to the power of separating inlay 40 sides (rear) slip.

Thereby, in the present embodiment, the leading section by stop part 20 sides even elongate waist of trousers portion when wearing off sport pants 60 to slide fastener 1 is applied with under the situation of lateral pull, also can suppress pull head 50 and just arbitrarily do not slided to the detaching direction of chain denture 12 by other people operation, and can stably keep the engagement of chain denture 12.Therefore, can stably keep the trousers form to wear off sport pants 60 swimmingly.

On the other hand, in the present embodiment, for example under the state of wearing sport pants 60, the knee of the sheet portion of predecessor by controlling these sport pants 60 and forwards pulling, can apply lateral pull to the frangible portion 15 that is disposed at each slide fastener 1, and the chain denture 12 that makes slide fastener 1 with this frangible portion 15 be starting point to stop part 20 sides with separate inlay 40 sides and separate.

In addition, in this case, the chain denture 12 about making is separated to behind the position of pull head 50 (Fig. 3), with respect to pull head 50 left tiltedly the below horizontal disengaging that relatively pulls the fastener stringer 10b that is disposed at the left side prevent portion 30.Thus, can extract this horizontal disengaging and prevent portion 30 in the sprocket path of navigation 58 of pull head 50, fastener stringer 10a, 10b that the one-tenth that is disposed at each trouser legs portion 61 is a pair of draw back.As a result, the left and right sides trouser legs portion 61 of sport pants 60 is separated into sheet portion of predecessor and back body sheet portion, so even for example keeping dress to have under the state of sport footwear etc., also can be simply and promptly take off sport pants 60.

In addition, in the present invention, the horizontal form that breaks away from the shape, size, zipper sprocket 13 and the frangible portion 15 that prevent portion 30 and stop part 20 etc. is not limited to above-mentioned embodiment, can change arbitrarily according to needs.

That is, as long as the horizontal disengaging portion of preventing among the present invention has the size that chain belt than pull head runs through the big band both forward and reverse directions in the interval in gap, and have at least 1 narrow width part, just can adopt the sort of form shown in (a)～(d) of Fig. 7 for example.

For example the horizontal disengaging shown in Fig. 7 (a) prevents that portion 71 from constituting certainly laterally disengaging and preventing that the right side ora terminalis of portion 71 from disposing each the slit 71a that is used to form narrow width part 71b along the bandwidth direction.In addition, for example the horizontal disengaging shown in Fig. 7 (b) prevents that portion 72 from constituting certainly laterally disengaging and preventing that the left-hand end genesis that is equivalent to the chain belt inboard of portion 71 is formed with the slit 72a of the narrow width part 72b that is used to form rear side, prevents that from horizontal disengaging the right-hand end genesis of portion 71 is formed with the slit 72c of the narrow width part 72d that is used to form front side in addition.

Horizontal disengaging shown in the (a) and (b) of Fig. 7 prevent portion 71,72 have with above-mentioned embodiment in horizontal disengaging prevent that portion 30 equates at the length dimension on the strip length direction and the gauge on the band both forward and reverse directions, have in addition with above-mentioned embodiment in horizontal disengaging prevent portion 30 about equally with respect to chain belt 11b strength of fixation.In addition, the horizontal disengaging shown in the (a) and (b) of Fig. 7 prevents that portion 71,72 from constituting and can utilize narrow width part 71b, 72b, the 72d that is formed by slit 71a, 72a, 72c, to carry out strain along the mode of bandwidth direction bending.

In addition, prevent portion 71 in the horizontal disengaging shown in (a) of Fig. 7, dispose the heart yearn portion of chain belt in the open side end of each slit 71a (right-hand end).In addition, prevent portion 72 in the horizontal disengaging shown in (b) of Fig. 7, dispose the heart yearn portion of chain belt in the open side end of front side slit 72c (right-hand end).

Disposing under the situation of heart yearn portion of chain belt in the open side end of slit 71a, 72c like this, by this heart yearn portion itself is constituted be difficult for flexible, this heart yearn portion can constitute with laterally break away from the portion 71 that prevents, 72 elastic deformation amount is limited in the limit deformation mechanism in the prescribed limit.In addition, prevent portion 72 in the horizontal disengaging shown in (b) of Fig. 7, by the open side end at rear slot 72a extension is set, can constitute limit deformation mechanism.

In addition, the horizontal disengaging of above-mentioned embodiment prevents that the horizontal disengaging shown in (b) of portion 30, Fig. 7 (a) and Fig. 7 from preventing that portion 71,72 has 2 narrow width parts that form by slit respectively, but in the present invention, be disposed at horizontal disengaging and prevent that the number of the narrow width part of portion is not particularly limited, and can change arbitrarily.

On the other hand, for example the horizontal disengaging shown in Fig. 7 (c) prevents that portion 73 from disposing through-hole section 73a at the central portion that this laterally breaks away from the bandwidth direction that prevents portion 73 along the strip length direction.Should laterally break away from and prevent that portion 71 had through-hole section 73a, thereby in the zone of the strip length direction that disposes this through-hole section 73a, the narrow width part 73b that obtains after the size that formation will laterally break away from the bandwidth direction of the portion of preventing 71 reduces.

In addition, for example the horizontal disengaging shown in Fig. 7 (d) prevents that portion 74 from disposing 2 independently through-hole section 74a at the central portion that this laterally breaks away from the bandwidth direction that prevents portion 74, in the zone of the strip length direction that disposes above-mentioned through-hole section 74a, constitute because existing above-mentioned through-hole section 74a to make horizontal disengaging prevent the narrow width part 74b that the size of the bandwidth direction of portion 71 has reduced.

(c) of Fig. 7, the horizontal disengaging shown in (d) prevent that portion 73,74 from constituting, have with above-mentioned embodiment in horizontal disengaging prevent that portion 30 equates at the length dimension on the strip length direction and the gauge on the band both forward and reverse directions, can utilize the narrow width part 73b, the 74b that form by through- hole section 73a, 74a to carry out strain along the mode of bandwidth direction bending in addition.

Even have the slide fastener that the horizontal disengaging shown in (d) of (a)～Fig. 7 of this Fig. 7 prevents portion 71～74, also can be when the slide fastener that is in closure state be subjected to lateral pull, prevent from laterally breaking away from and prevent that portion 71～74 from running through the gap from the sprocket path of navigation of pull head via chain belt and being drawn out, thereby can stably keep the closure state of fastener stringer.

In addition, to be in beginning to separate from frangible portion by the chain denture about making closure state about fastener stringer when drawing back, can prevent portion's 71～74 strains by making horizontal disengaging, the interference that will laterally break away from the portion of preventing 71～74 and pull head is suppressed at Min., and can extract horizontal disengaging swimmingly from pull head and prevent portion 71～74.

In addition, prevent that about the horizontal disengaging of above-mentioned embodiment the horizontal disengaging shown in (d) of (a)～Fig. 7 of portion 30 and Fig. 7 from preventing portion 71～74th,, synthetic resin is shaped so that chain belt in slit or the mode that exposes in the through-hole section, is removed in this slit or in the through-hole section.Even but in for example laterally breaking away from the portion 30 that prevents, 71～74 slit or through-hole section, dispose the bottom that is constituted by synthetic resin, also can make horizontal disengaging prevent that portion 30,71～74 from can guarantee to have under the situation of desirable strain by selection synthetic resin material, be formed with the bottom in the horizontal slit or the through-hole section that prevent portion 30,71～74 of breaking away from.

In addition, slide fastener 80 about the variation of the present invention shown in Fig. 8, for improve zipper sprocket 81, the 2nd end portion 82, pseudo-sprocket 83 and laterally break away from prevent portion 84 to chain belt 11a, 11b strength of fixation, prevent when pull head 50 is slided pull head 50 on lower flange 56 rub with chain belt 11a, 11b, can make above-mentioned zipper sprocket 81, the 2nd end portion 82, pseudo-sprocket 83 and laterally disengaging prevent that portion 84 has fin 81a, 82a, 83a, the 84a that disposes with from side-prominent mode in the chain belt such as the chain belt side edge of zipper sprocket 81 etc. respectively.

In addition, under the situation of the slide fastener 1 of above-mentioned embodiment, ending at the 2nd of stop part 20 that portion 22 disposes can be along the pull head fastening 22b of portion of bandwidth direction strain, but can at random select whether to end configuration pull head fastening portion of portion the 2nd according to the difference of the purposes of slide fastener etc.Thereby, in the present invention, as shown in Figure 8, also can end portion 82 with the 2nd and constitute the pull head fastening portion that do not arrange.

In addition, in the present invention, as long as the engagement force locality of chain denture that can be about the frangible portion that is disposed at the chain denture makes descends or disappears, the form of frangible portion just is not particularly limited.For example as shown in Figure 8, the zipper sprocket of the engagement head that also can not be removal that above-mentioned embodiment is such is installed on chain belt 11a, 11b, but the size that will mesh head is installed on chain belt 11a, 11b than other zipper sprockets 81 little zipper sprocket 86a, constitutes frangible portion 86.

The Reference numeral translation

1, slide fastener; 10a, 10b, fastener stringer; 11a, 11b, chain belt; 12, chain denture; 13, zipper sprocket; 13a, engagement head; 13b, neck; 13c, main part; 14, heart yearn portion; 15, frangible portion; 20, stop part; 21, the 1st ends portion; 21a, main part; 21b, stop portion; 22, the 2nd ends portion; 22a, fixed part; 22b, pull head fastening portion; 22c, hole portion; 22d, the 1st side wall surface; 22e, the 2nd side wall surface; 22f, the 3rd side wall surface; 25, pseudo-sprocket; 25a, main part; 25b, head; 30, laterally break away from the portion that prevents; 31, slit; 31a, extension; 32, narrow width part; 33, protuberance; 40, separate inlay; 41, the 1st open from the intercalation member; 41a, pull head maintaining part; 41b, stage portion; 41c, pivot end portion; 41d, rib; 42, the 2nd open from the intercalation member; 42a, main part; 42b, ended portion by pivot; 42c, projecting strip part; 42d, jut; 50, pull head; 51, pull head main body; 52, pulling-on piece; 53, upper flange; 54, lower wing plate; 55, guide post; 56, lower flange; 56a, parallel portion; 56b, rake; 57, pulling-on piece erection column; 58, sprocket path of navigation; 60, sport pants; 61, trouser legs portion; 71, laterally break away from the portion that prevents; 71a, slit; 71b, narrow width part; 72, laterally break away from the portion that prevents; 72a, slit; 72b, narrow width part; 72c, slit; 72d, narrow width part; 73, laterally break away from the portion that prevents; 73a, through-hole section; 73b, narrow width part; 74, laterally break away from the portion that prevents; 74a, through-hole section; 74b, narrow width part; 80, slide fastener; 81, zipper sprocket; 81a, fin; 82, the 2nd ends portion; 82a, fin; 83, pseudo-sprocket; 83a, fin; 84, laterally break away from the portion that prevents; 84a, fin; 86, frangible portion; 86a, zipper sprocket.

Claims (14)

1. slide fastener, this slide fastener (1,80) comprising:

About become a pair of the 1st fastener stringer (10a) and the 2nd fastener stringer (10b), they are equipped with chain denture (12) at the band side edge part of facing mutually of a pair of the 1st chain belt (11a) and the 2nd chain belt (11b);

Pull head (50), it can slide along above-mentioned chain denture (12);

Stop part (20), it is configured in above-mentioned chain denture (12) one distolateral of above-mentioned the 1st fastener stringer (10a);

At least 1 frangible portion (15,86), it is disposed at above-mentioned chain denture (12), and the engagement force of the above-mentioned chain denture (12) about being used for making descends locally or disappears,

Above-mentioned pull head (50) has the roughly sprocket path of navigation (58) of Y font between last lower wing plate (53,54), the chain belt that is formed with above-mentioned the 1st chain belt (11a) and the 2nd chain belt (11b) at the side edge part of above-mentioned pull head (50) runs through the gap,

This slide fastener can make the above-mentioned chain denture (12) that is in engagement begin to separate from above-mentioned frangible portion (15,86), and draws back above-mentioned the 1st fastener stringer (10a) and the 2nd fastener stringer (10b),

This slide fastener (1,80) is characterised in that,

Distolaterally dispose horizontal disengaging and prevent portion (30,71,72,73,74,84) at one of the above-mentioned chain denture (12) of above-mentioned the 2nd fastener stringer (10b),

For at above-mentioned the 1st fastener stringer (10a) that is in closure state and the 2nd fastener stringer (10b) when being subjected to lateral pull, prevent that above-mentioned the 2nd chain belt (11b) from running through the gap from the above-mentioned sprocket path of navigation (58) of above-mentioned pull head (50) via above-mentioned chain belt and extracting, above-mentioned horizontal disengaging prevents portion (30,71,72,73,74,84) has the thickness that laterally breaks away from be used to preventing, should be used for preventing that the thickness that laterally breaks away from had the size that runs through the big band both forward and reverse directions in the interval in gap than above-mentioned chain belt

Above-mentioned horizontal disengaging prevents portion (30,71,72,73,74,84) in the part that has be used to the thickness that prevents from laterally breaking away from, and has at least 1 narrow width part obtaining after size with the bandwidth direction reduces (32,71b, 72b, 72d, 73b, 74b).

2. slide fastener according to claim 1, wherein,

By preventing that in above-mentioned horizontal disengaging portion (30,71,72) from setting slit (31,71a, 72a, 72c) and constituting above-mentioned narrow width part (32,71b, 72b, 72d).

3. slide fastener according to claim 2, wherein,

Above-mentioned slit (31,72a) prevents that from above-mentioned horizontal disengaging the side genesis of the chain belt inboard of portion (30,72) from disposing along the bandwidth direction.

4. slide fastener according to claim 3, wherein,

The slit width of the open side end of above-mentioned slit (31) narrows.

5. slide fastener according to claim 2, wherein,

The ora terminalis of a side of facing mutually with above-mentioned stop part (20) that prevents portion (71,72) from above-mentioned horizontal disengaging disposes above-mentioned slit (71a, 72c) along the bandwidth direction.

6. slide fastener according to claim 1, wherein,

Chain belt side edge at above-mentioned the 1st chain belt (11a) and the 2nd chain belt (11b) disposes heart yearn portion (14),

At least a portion that is disposed at the heart yearn portion (14) of above-mentioned the 2nd chain belt (11b) is embedded in above-mentioned horizontal disengaging and prevents in the portion (30,71,72,73,74,84).

7. slide fastener according to claim 1, wherein,

Above-mentioned horizontal disengaging prevents that the length dimension of portion (30,71,72,73,74,84) is set at the interval from the back-end location of guide post (55) to the deutostoma position greater than above-mentioned pull head (50), and is set at the size in the above-mentioned sprocket path of navigation (58) on the above-mentioned pull head (50) that can be housed in the end that stops at above-mentioned stop part (20) side.

8. slide fastener according to claim 1, wherein,

This slide fastener has for the elastic deformation amount who above-mentioned horizontal disengaging is prevented portion (30,71,72) and is limited in limit deformation mechanism in the prescribed limit.

9. slide fastener according to claim 1, wherein,

Prevent portion (73,74) configuration through-hole section (73a, 74a) and constitute above-mentioned narrow width part (73b, 74b) in above-mentioned horizontal disengaging.

10. slide fastener according to claim 1, wherein,

The size of the bandwidth direction of above-mentioned narrow width part (32,71b, 72b, 72d, 73b, 74b) is set at the size that prevents the band both forward and reverse directions of portion (30,71,72,73,74) less than above-mentioned horizontal disengaging.

11. slide fastener according to claim 1, wherein,

The last lower flange (56) of above-mentioned pull head (50) comprising: parallel portion (56a), and it is configured in the back oral-lateral of above-mentioned pull head (50) in parallel with each other; Rake (56b), its end from above-mentioned parallel portion (56a) extends out, and above-mentioned about making goes up interval between lower flange (56) along with going to the shoulder mouth and increase gradually,

Above-mentioned horizontal disengaging prevent the above-mentioned narrow width part (32,71b, 72b, 72d, 73b, 74b) of portion (30,71,72,73,74) be configured in above-mentioned on the above-mentioned pull head (50) of the end that stops at above-mentioned stop part (20) side go up lower flange (56) above-mentioned rake (56b) in the scope of strip length direction.

12. slide fastener according to claim 1, wherein,

Above-mentioned horizontal disengaging prevents that portion (30) has the plane with above-mentioned stop part (20) facing sides.

13. slide fastener according to claim 1, wherein,

Above-mentioned horizontal disengaging prevents that portion (30,71,72,73,74) has to the outstanding protuberance (33) of above-mentioned the 1st chain belt (11a),

Between the above-mentioned stop part (20) of above-mentioned the 1st chain belt (11a) and above-mentioned chain denture (12), dispose pseudo-sprocket (25),

Above-mentioned pseudo-sprocket (25) comprising: main part (25a), and it is fixed in above-mentioned the 1st chain belt (11a); Head (25b), it prevents from extending between portion (30,71,72,73,74) and the above-mentioned chain denture (12) towards the above-mentioned horizontal disengaging of above-mentioned the 2nd fastener stringer (10b) from aforementioned body portion (25a), and this head (25b) can prevent above-mentioned protuberance (33) sliding-contact of portion (30,71,72,73,74) with above-mentioned horizontal disengaging.

14. slide fastener according to claim 1, wherein,

Above-mentioned stop part (20) has only portion (22), and should end portion (22) and have than the guide post (55) of above-mentioned pull head (50) and the size that runs through the big bandwidth direction of width between the last lower flange (56),

The above-mentioned portion (22) of ending has the pull head fastening portion (22b) of the above-mentioned pull head of fastening (50) with above-mentioned guide post (55) butt of above-mentioned pull head (50),

Above-mentioned pull head fastening portion (22b) constitutes can be along bandwidth direction strain.

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