CN105530828A

CN105530828A - Fastener chain, slide fastener, and fastener element manufacturing method

Info

Publication number: CN105530828A
Application number: CN201380079476.2A
Authority: CN
Inventors: 石井隼人; 古里太; 斋藤力; 山县将通; 德克恩格尔哈特; 京特兰克
Original assignee: YKK Corp
Current assignee: YKK Corp
Priority date: 2013-09-09
Filing date: 2013-09-09
Publication date: 2016-04-27
Also published as: WO2015033475A1; EP3045068B1; EP3045068A4; EP3045068A1; JPWO2015033475A1; JP6161708B2

Abstract

This slide fastener (1) is characterized in that the first and second main surfaces of the main body (21a, 51a) of the engaging head (21, 51) of the fastener elements (20, 50) are flat surfaces that are orthogonal to the longitudinal tape direction and the pair of legs (23, 53) of the fastener element (20, 50) curve in a diagonal direction or extend at a slant with respect to the first and second main surfaces of the main body of the head (21a, 51a). As a result, this slide fastener (1) has a different external appearance from previous slide fasteners and is able to stably achieve strength with respect to transverse pulling and strength with respect to thrusts that are equivalent to or greater than previous slide fasteners.

Description

The manufacture method of fastener chain and slide fastener and chain tooth

Technical field

The present invention relates to and there is leg bend relative to bandwidth direction or the fastener chain of chain tooth that tilts and slide fastener and manufacture the manufacture method of this chain tooth.

Background technology

Metal chain tooth usually has engageable head, the stem portion extended to a direction (rear) from this engageable head and is branched off into two strands and the pair of right and left leg extended to a direction (rear) from this stem portion.In addition, engageable head is configured with engagement projections and for for engagement object chain tooth engagement projections embed engagement recess or embedded space portion.

As the kind of metal tooth, be known to be provided with engagement projections in face (upper surface) side of engageable head, be provided with the chain tooth of the so-called single side of engagement recess in another face (lower surface) side (below sometimes also referred to as one side chain tooth) and be respectively provided with the chain tooth (below sometimes also referred to as two-sided chain tooth) of so-called double-side type in one group of engagement projections and embedded space portion at the upper and lower surface of engageable head.

As an example of metal one side chain tooth, such as, be known to the chain tooth disclosed in International Publication No. 2013/027281 publication (patent document 1).In addition, as an example of metal two-sided chain tooth, such as, the chain tooth disclosed in International Publication No. 2010/089854 publication (patent document 2) is known to.

In addition, in general, zipper strip is provided with multiple chain tooth, when from the band front of zipper strip or band rear side viewing tooth chain band, the engageable head of metal chain tooth, stem portion and leg mostly along bandwidth direction (with bandwidth direction abreast) linearly configuration.

On the other hand, such as in order to do not rely on engagement projections, engagement recess (or embedded space portion) and make left and right chain denture engagement, or seek differential in order to form difference with other goods in appearance with its goods, again or in order to other reason, it is also known that a kind of from slide fastener for the bending of bandwidth direction or bending form of the Local Phase of chain tooth when the belt surface of zipper strip or the viewing of band rear side.In addition, in such as United States Patent (USP) No. 1864614 description (patent document 3), United States Patent (USP) No. 2158079 description (patent document 4), in fact disclose the example of such slide fastener.

Chain toilet article such as described in patent document 3 have engageable head, stem portion and a pair leg.Engagement projections, the engagement recess (or embedded space portion) for engaging with the chain tooth engaging object is not formed at the engageable head of this patent document 3, by arranging obliquely at the leg configured abreast relative to the bandwidth direction with chain tooth from engageable head when belt surface or the viewing of band rear side and stem portion, can the chain denture of left and right be made to intermesh and slide fastener is closed when forming slide fastener.

In addition, record in patent document 4 and a kind ofly have the chain tooth of engageable head and a pair leg or have the chain tooth of engageable head, stem portion and a pair leg, these chain toilet article have from its engageable head when belt surface or the viewing of band rear side or engageable head and the leg form bending relative to bandwidth direction.

In addition, in the chain tooth of this patent document 4, be provided with rotation blocking member, this rotation blocking member is used under the state of left and right chain denture engagement, stop a chain denture to be rotated to belt surface side or band rear side relative to another chain denture.

Prior art document

Patent document

Patent document 1: International Publication No. 2013/027281 publication

Patent document 2: International Publication No. 2010/089854 publication

Patent document 3: United States Patent (USP) No. 1864614 description

Patent document 4: United States Patent (USP) No. 2158079 description

Summary of the invention

the problem that invention will solve

As the chain tooth described in patent document 3, patent document 4, engageable head as a part for chain tooth has relative to the bending form in bandwidth direction when watching from belt surface or band rear side, the slide fastener thus with this chain tooth presents the outward appearance different from the slide fastener with the common chain tooth that engageable head, stem portion and leg configure along bandwidth direction, therefore, that can seek with other goods is differential, improves the commodity value of its slide fastener goods.

But on the other hand, the slide fastener with the chain tooth that engageable head bends relative to bandwidth direction is curved shape due to its engageable head, joggled strength when therefore causing the chain denture of left and right to engage each other reduces.In addition, when the external force of band both forward and reverse directions being applied to this chain denture when being pulled to the direction separated by the zipper strip of left and right under the state that the chain denture of left and right has engaged each other, under the state that the chain denture of left and right has engaged each other, the chain denture of left and right is easy to separated from one another and the tooth chain band of left and right is split, and the horizontal tensile strength of chain band, anti-top (Japanese: げ on prominent I) intensity reduce.

Therefore, the slide fastener that the Local Phase of chain tooth bends for bandwidth direction as patent document 3, patent document 4 exists the goods (using the goods of slide fastener) adopting this slide fastener, and be not durable such problem.

Namely the present invention completes in view of above-mentioned problem in the past, and its concrete object is to be provided in and bends for bandwidth direction from the Local Phase of chain tooth when belt surface or the viewing of band rear side and be different from other goods and stably can guarantee the manufacture method of the fastener chain of the enough durable such joggled strength of goods when making the chain denture of left and right be intermeshed up and slide fastener and the chain tooth that provides this fastener chain and slide fastener to adopt.

for the scheme of dealing with problems

In order to achieve the above object, the fastener chain of the 1st aspect provided by the present invention comprises a pair tooth chain band as basic structure, this a pair tooth chain band has pair of right and left zipper strip and utilizes riveted joint processing to be arranged on multiple metal chain teeth of the band side edge part respect to one another of described zipper strip along strip length direction, described chain toilet article have engageable head, be configured in the stem portion of the end side of described engageable head, and be branched off into two strands and a pair leg stretched out from one end of described stem portion, described engageable head comprises the head body with the 1st interarea and the 2nd interarea with described 1st interarea opposition side, the outstanding engagement projections be located on described 1st interarea of described head body, and the engagement recess be located on described 2nd interarea of described head body that caves in, the topmost of this fastener chain is characterised in that, described 1st interarea of described head body and the 2nd interarea are the tabular surfaces orthogonal with strip length direction, leg described in a pair stretches out relative to described 1st interarea of described head body and the 2nd interarea oblique bending or inclination.

Fastener chain of the present invention particularly preferably is, and leg described in a pair is bending or tilt to the projected direction of described engagement projections relative to described 1st interarea of described head body and the 2nd interarea.

In addition, the fastener chain of the 2nd aspect provided by the invention is utilized to comprise a pair tooth chain band as basic structure, this a pair tooth chain band has pair of right and left zipper strip and utilizes riveted joint processing to be arranged on multiple metal chain teeth of the band side edge part respect to one another of described zipper strip along strip length direction, described chain toilet article have engageable head, be configured in the stem portion of the end side of described engageable head, and be branched off into two strands and a pair leg stretched out from one end of described stem portion, described engageable head comprises the head body with the 1st interarea and the 2nd interarea with described 1st interarea opposition side, give prominence to and be located at described 1st interarea of described head body and the engagement projections of the 2nd interarea, and be configured in the embedded space portion embedded between the described engagement projections of described 1st interarea and the 2nd interarea side and described stem portion and for the described engagement projections of confession engagement object, the topmost of this fastener chain is characterised in that, described 1st interarea of described head body and the 2nd interarea are the tabular surfaces orthogonal with strip length direction, leg described in a pair stretches out relative to described 1st interarea of described head body and the 2nd interarea oblique bending or inclination.

Above-mentioned fastener chain of the present invention preferably, the top ends of described leg with the face of described 1st interarea same side of described engageable head and the 1st interarea of described leg, strip length direction is configured in the forming region of the described head body of the described engageable head of the described chain tooth of engagement subject side.

In addition, fastener chain of the present invention preferably, described engagement projections is inserted into the insertion depth in the described engagement recess of described chain tooth of engagement subject side or described embedded space portion on strip length direction, is set to less than more than 65% 85% relative to the ratio for the outstanding size that described engagement projections is given prominence to from described 1st interarea of described head body on strip length direction.

Further preferably, the size at the interval between the described head body of chain tooth adjacent in a described tooth chain band is being defined as a, the size described engagement projections being inserted on strip length direction the insertion depth in the described engagement recess of described chain tooth of engagement subject side or described embedded space portion is set to b, the value of b/a is set to less than more than 0.25 0.30.

Further preferably, the 1st interarea of described leg has the fillet surface of described 1st interarea with described head body and the 2nd main surface parallel in the top ends of described leg.

And, adopt the present invention, a kind of slide fastener can be provided, this slide fastener is by the odontogenetic chain denture of multiple described chain installs pull head the utilizing of fastener chain with said structure and forming, and leg described in a pair carries out sliding making the glide direction of tooth chain band engagement described in a pair bending or tilt relative to described 1st interarea of described head body and the 2nd interarea towards described pull head.

Above-mentioned slide fastener of the present invention preferably, comprise separation inlay, this separation inlay has the plunger of the rearward end being fixed on a described tooth chain band and is fixed on the seat rod of rearward end of tooth chain band described in another, and the interval be configured between the described leg of the described chain tooth of the rearmost end of described chain denture and described plunger or described seat rod increases gradually along with the top ends tending to described leg.

Secondly, adopt the present invention, a kind of method for the manufacture of metal chain tooth can be provided, these metal chain toilet article have engageable head, be configured in the stem portion of the end side of described engageable head, and be branched off into two strands and the pair of meshing protuberance stretched out from one end of described stem portion, described engageable head comprises the head body with the 1st interarea and the 2nd interarea with described 1st interarea opposition side, the outstanding engagement projections being located at described 1st interarea of described head body, and depression is located at the engagement recess having end shape of described 2nd interarea of described head body, the topmost of manufacture method of this chain tooth is characterised in that, comprise the following steps: to carry out stamping to metal flat wire, form described engagement projections and described engagement recess, use blanking die and cutting punch that the local of the described flat wire being formed with described engagement projections and described engagement recess is die-cut into described chain tooth, this cutting punch has the head side par that possesses the tabular surface abutted with described head body and relative to the described tabular surface oblique bending of described head side par or the leg forming portion of inclination in punch tip portion, and when die-cut described chain tooth, make leg described in a pair relative to described 1st interarea of described head body and the 2nd interarea oblique bending or inclination.

Above-mentioned manufacture method of the present invention preferably, described cutting punch has accommodating recess or inserts teat, this accommodating recess depression is located at described head side par, for accommodating described engagement projections, this insertion teat is outstanding is located at described head side par, can be inserted in described engagement recess.

Manufacture method of the present invention further preferably, comprise such step: when die-cut described chain tooth, start making described head side par contact with described flat wire die-cut after, described leg forming portion contacts with described flat wire and makes leg curvature described in a pair or inclination.

Manufacture method of the present invention further preferably, comprises the following steps: to be provided with in described leg forming portion the face bending relative to the described tabular surface of described head side par to the direction with opposition side, die-cut direction or tilt; And be provided with in the position corresponding with the top ends of the described leg of described chain tooth of described blanking die the chamfered section forming portion had with the face of the described flat faces parallel of described head side par.

the effect of invention

The fastener chain of the 1st aspect of the present invention has a pair tooth chain band, this a pair tooth chain band utilizes riveted joint processing to be provided with metal so-called one side chain tooth at the band side edge part respect to one another of pair of right and left zipper strip, wherein, 1st interarea and the 2nd interarea of the head body of each chain tooth are the tabular surfaces orthogonal with strip length direction, and a pair leg stretches out relative to the 1st interarea of head body and the 2nd interarea oblique bending or inclination.

So, the fastener chain with the metal one side chain tooth that leg bends relative to bandwidth direction or tilts presents the outward appearance different from the Typical zipper chain in the past that the engageable head of chain tooth, stem portion and leg configure along bandwidth direction, therefore, that can seek with other goods is differential, easily improves the commodity value of the band slide fastener goods adopting this fastener chain.

In addition, in fastener chain of the present invention, 1st interarea of the head body of each chain tooth and the 2nd interarea and bandwidth direction configure abreast, engagement projections is arranged in the prominent part of at the 1st interarea of this head body, and be provided with the engagement recess of end shape in the 2nd interarea depression of this head body, therefore, it is possible to stably make the engagement of the chain denture of left and right and be separated, in addition, can stably obtain with Typical zipper chain same degree in the past more than horizontal tensile strength and anti-top intensity.

Further, in fastener chain of the present invention, by a pair leg relative to bandwidth direction oblique bending or obliquely riveted joint be fixed on zipper strip, make chain tooth not easily to front or the back sweep in strip length direction, stably can keep the attitude of chain tooth.Thereby, it is possible to make the chain denture of left and right engage swimmingly after slide fastener is made and be separated, the good sliding of pull head stably can be guaranteed.

In addition, by a pair leg of chain tooth relative to bandwidth direction oblique bending or be fixed on obliquely on zipper strip, contact area between the band side edge part of a pair leg and zipper strip becomes large, therefore, it is possible to expection improves the installation strength of chain tooth relative to zipper strip.

In addition, in the present invention, 1st interarea of the stem portion of chain tooth and the 2nd interarea similarly can only have the tabular surface orthogonal with strip length direction with the 1st interarea of head body and the 2nd interarea, also only can have and the 1st interarea of leg and the 2nd interarea continuous print flexure plane or inclined plane, or both both this tabular surface and flexure plane or this tabular surface and inclined plane can be had.

In above-mentioned fastener chain of the present invention, a pair leg relative to the 1st interarea of head body and the 2nd interarea towards the projected direction oblique bending of engagement projections or inclination.

Usually, in the slide fastener with metal one side chain tooth, engage swimmingly to make the chain denture of left and right and be separated, the engagement projections of one side chain tooth is given prominence to relative to the glide direction that slide fastener is closed that makes of head body towards pull head, in other words, time in the chain tooth path of navigation of one side chain Tooth movement to pull head, engagement projections is not given prominence to towards the deutostoma side of pull head, but gives prominence to towards shoulder mouth side.In general, the state that the chain denture that one side chain tooth near the deutostoma moving to pull head is in left and right is engaged with each other, not easily relative to pull head dislocation, but, one side chain tooth Comparison of Gardening Activities near the shoulder mouth moving to pull head freely, thus exists and is easy to misplace such tendency relative to pull head.

Therefore, when pull head being slided to slide fastener closing direction forming slide fastener, there is the one side chain tooth moved in chain tooth path of navigation from the shoulder mouth of pull head and making takeing on movable near mouth the situation that the leg of this one side chain tooth contacts with pull head.In this case, by a pair leg of one side chain tooth with bending or tilt towards the mode of shoulder mouth side in the same manner as the projected direction of engagement projections, even if the leg of one side chain tooth contacts with pull head, the leg of this one side chain tooth also not easy damaged pull head.

In addition, when making pull head slide to slide fastener opening direction, the one side chain tooth moved in chain tooth path of navigation from the deutostoma of pull head is difficult to activity near deutostoma, therefore, even if a pair leg of one side chain tooth is bending or tilt as aforementioned, the leg of this one side chain tooth also not easy damaged pull head.

Secondly, the fastener chain of the 2nd aspect of the present invention has a pair tooth chain band, this a pair tooth chain band utilizes riveted joint processing to be provided with the two-sided chain tooth of metal what is called at the band side edge part respect to one another of pair of right and left zipper strip, wherein, 1st interarea and the 2nd interarea of the head body of each chain tooth are the tabular surfaces orthogonal with strip length direction, and a pair leg stretches out to the projected direction oblique bending of an engagement projections or inclination relative to the 1st interarea of head body and the 2nd interarea.

The fastener chain Typical zipper chain in the past that can seek with the engageable head of chain tooth, stem portion and leg along bandwidth direction configure same with the fastener chain of above-mentioned 1st aspect of the 2nd aspect is like this differential, therefore, the commodity value of the band slide fastener goods adopting this fastener chain is easily improved.On this basis, can stably make left and right chain denture engagement and be separated, in addition, can stably obtain with Typical zipper chain same degree in the past more than horizontal tensile strength and anti-top intensity.

In addition, by a pair leg relative to bandwidth direction oblique bending or obliquely riveted joint be fixed on zipper strip, make chain tooth not easily to front or the back sweep in strip length direction, stably can keep the attitude of chain tooth.Thereby, it is possible to make the chain denture of left and right engage swimmingly and be separated after slide fastener is made, the good sliding of pull head stably can be guaranteed.Further, because the contact area between a pair leg of chain tooth and the band side edge part of zipper strip becomes large, therefore, can also expect and improve the installation strength of chain tooth relative to zipper strip.

In fastener chain of the present invention in the above-mentioned the 1st and in the 2nd, the top ends of leg with the face of the 1st interarea same side of engageable head and the 1st interarea of the top ends of leg, strip length direction is configured in the forming region of the head body of the engageable head of the chain tooth of engagement subject side.Thereby, it is possible to suitably guarantee the installation strength of chain tooth relative to zipper strip, and can prevent from, because leg is long and make the flexibility of fastener chain reduce, can stably guaranteeing suitable flexibility.

In addition, in fastener chain of the present invention, engagement projections is inserted into the insertion depth in the engagement recess of chain tooth of engagement subject side or embedded space portion on strip length direction, be set to less than more than 65% 85% relative to the ratio for the outstanding size that engagement projections is given prominence to from the 1st interarea of head body on strip length direction, be preferably less than more than 70% 80%.

By the insertion depth of engagement projections is set as more than 65% relative to the ratio of outstanding size, the joggled strength of fastener chain can be improved, stably guarantee horizontal tensile strength, the anti-top intensity of the expectation of being with the resistance to use of slide fastener goods.In addition, by the insertion depth of engagement projections is set as less than 85% relative to the ratio of outstanding size, the engagement of the chain denture of left and right can be prevented excessively strong, stably can guarantee the suitable flexibility of fastener chain, and can prevent the sliding of the real-pull head made at slide fastener from declining.

In addition, in fastener chain of the present invention, when the size at the interval between the head body of chain tooth adjacent in a tooth chain band is defined as a, the size of insertion depth that engagement projections is inserted on strip length direction in the engagement recess of the chain tooth of engagement subject side or embedded space portion is when being set to b, and the value of b/a is set to less than more than 0.25 0.30.

By the value of described b/a is set as more than 0.25, the joggled strength of fastener chain can be improved, stably guarantee horizontal tensile strength, the anti-top intensity of the expectation of being with the resistance to use of slide fastener goods.In addition, by the value of described b/a is set as less than 0.30, the suitable flexibility of fastener chain can stably be guaranteed.

Further, in fastener chain of the present invention, be there is in the top ends of described leg by the 1st interarea of described leg the fillet surface of described 1st interarea with described head body and the 2nd main surface parallel, the hand sense of touch of chain tooth, skin feel can be made good.In addition, when pull head being slided forming slide fastener to slide fastener closing direction, the leg more not easy damaged pull head of chain tooth can be made.

And, adopt the present invention, can provide a kind of such slide fastener: use the fastener chain with said structure to form, and a pair leg of chain tooth to slide or inclination bending with the glide direction making chain denture engage towards pull head relative to the 1st interarea of head body and the 2nd interarea.

Because such slide fastener easily can realize the differential of the Typical zipper configured along bandwidth direction with the engageable head of chain tooth in the past, stem portion and leg, therefore, the commodity value of the band slide fastener goods using this slide fastener is easily improved.In addition, pull head can be made to slide and stably make the engagement of the chain denture of left and right and be separated.Further, can stably obtain with Typical zipper same degree in the past more than joggled strength.

In addition, by a pair leg relative to bandwidth direction oblique bending or obliquely riveted joint be fixed on zipper strip, chain tooth can be made not easily to front or the back sweep in strip length direction, stably can keep the attitude of chain tooth.Thereby, it is possible to utilize the slip of pull head to make the engagement of the chain denture of left and right and be separated swimmingly, the good sliding of pull head stably can be guaranteed.

This slide fastener of the present invention comprises separation inlay, this separation inlay has the plunger of the rearward end being fixed on a tooth chain band and is fixed on the seat rod of rearward end of another tooth chain band, and the interval be configured between the leg of the chain tooth of the rearmost end of chain denture and plunger or seat rod increases gradually along with the top ends of trend leg.

Thereby, it is possible to improve the flexibility of this part between chain tooth and plunger or seat rod of tooth chain band, tilting to bandwidth direction towards relative to chain denture of plunger or seat rod easily can be made.Thereby, it is possible to carry out the operation that plunger is inserted into socket via the chain tooth path of navigation of pull head, the operation of being extracted from socket via the chain tooth path of navigation of pull head by plunger more swimmingly, therefore, it is possible to improve the operability being separated inlay.

Secondly, the manufacture method of metal one side chain tooth of the present invention comprises the following steps: to carry out stamping to metal flat wire, forms engagement projections and engagement recess; Use blanking die and cutting punch by chaining tooth that is die-cut for a part for flat wire, this cutting punch has head side par and leg forming portion in punch tip portion, this head side par has tabular surface, and this leg forming portion is relative to this tabular surface oblique bending or inclination; And when die-cut chain tooth, make a pair leg relative to the 1st interarea of head body and the 2nd interarea oblique bending or inclination.

Adopt this manufacture method of the present invention, stably can manufacture that the 1st interarea of head body and the 2nd interarea are the tabular surfaces orthogonal with strip length direction continuously, one side chain tooth that a pair leg stretches out relative to the 1st interarea of head body and the 2nd interarea oblique bending or inclination.

Particularly, manufacture method of the present invention having depression be located at head side par and for the accommodating recess of accommodating engagement projections or be outstandingly located at head side par and can be inserted into the cutting punch of cutting punch as die-cut chain tooth of the insertion teat of engagement recess by using, the shape of engagement projections or the shape of engagement recess can be easily kept when die-cut chain tooth, therefore, it is possible to stably manufacture engagement projections or engagement recess have the one side chain tooth of predetermined shape.

In addition, manufacture method of the present invention comprises such step: when die-cut chain tooth, start making head side par contact with flat wire die-cut after, make leg forming portion contact with flat wire and make a pair leg curvature or inclination.Thereby, it is possible to while utilizing cutting punch die-cut chain tooth, make the leg of this chain tooth smooth and easy and the shape of the 1st interarea be stably plastic deformation to relative to head body and the 2nd interarea oblique bending or inclination.

Further, manufacture method of the present invention comprises the following steps: to be provided with in described leg forming portion the face bending relative to the described tabular surface of described head side par to the direction with opposition side, die-cut direction or tilt; And be provided with in the position corresponding with the top ends of the described leg of described chain tooth of described blanking die the chamfered section forming portion had with the face of the described flat faces parallel of described head side par.Thereby, it is possible to smooth and easy and stably form the chamfered section (fillet surface) that has with the 1st interarea of head body and the face of the 2nd main surface parallel in the leg top ends of chain tooth when die-cut chain tooth.

Accompanying drawing explanation

Fig. 1 is the top view representing the slide fastener using the fastener chain of embodiments of the invention 1 to form.

Fig. 2 is the stereogram of the chain tooth representing this slide fastener.

Fig. 3 is the front view watching this chain tooth from the side being configured with engagement projections strip length direction.

Fig. 4 is the side view watching this chain tooth from bandwidth direction.

Fig. 5 is that cutting illustrates that the local of chain denture is to illustrate the partial sectional view of the engagement of the chain tooth of the left and right of this slide fastener.

Fig. 6 is the sectional view of the relation represented between the chain denture of left and right and pull head.

Fig. 7 illustrates the chain denture of left and right and is separated the key diagram of the relation between inlay.

Fig. 8 is the sectional view of the formation process that engagement projections in the process manufacturing chain tooth and engagement recess are described.

Fig. 9 is the sectional view of the die-cut operation of the chain tooth illustrated in the process manufacturing chain tooth.

Figure 10 is the sectional view of the die-cut operation of the chain tooth illustrated in the process of manufacture chain tooth on the other hand.

Figure 11 is the front view of the chain tooth that the fastener chain watching embodiments of the invention 2 from strip length direction adopts.

Figure 12 is the sectional view of this chain tooth.

Detailed description of the invention

Below, enumerating embodiment explains preferred embodiment of the present invention with reference to accompanying drawing.In addition, the present invention by any restriction of the embodiment of following explanation, as long as have the structure identical in fact with the present invention, and can not obtain same action effect, just can carry out diversified change.

Such as, in the slide fastener of following embodiment 1, be configured with continuously with the chain denture of left and right in the bottom of fastener chain and be separated inlay, but in the present invention, also can substitute and be separated inlay and lower stop member is set.

Embodiment 1

Fig. 1 is the top view representing the slide fastener using the fastener chain of the present embodiment 1 to form.Fig. 2, Fig. 3 and Fig. 4 are the stereogram of the chain tooth representing this slide fastener, front view and side view respectively.

In addition, in the following description, fore-and-aft direction refers to the strip length direction of zipper strip, is the direction identical with the glide direction of pull head.Specifically, front instigates pull head to engage each other with the chain denture of left and right and direction that mode that slide fastener closes is slided, and rear instigates pull head with the chain denture of the left and right separately direction that the mode that slide fastener pulls open is slided.

Left and right directions refers to the bandwidth direction of zipper strip, is parallel with the zone face of zipper strip and orthogonal with strip length direction direction.In addition, above-below direction is the band both forward and reverse directions orthogonal with the zone face of zipper strip, particularly for zipper strip using the direction being configured with the side of pulling-on piece of pull head as top, using the direction of its opposition side as below.

The slide fastener 1 of the present embodiment 1 have the band side edge part of the zipper strip 11 of left and right be formed the pair of right and left tooth chain band 10 of chain denture 12, the pull head 30 that configure in the mode can slided along chain denture 12, be adjacent to configure with the front of chain denture 12 and for the upper stop member 5 that prevents pull head 30 from coming off and be adjacent to configure with the rear end side of chain denture 12 be separated inlay 6.

In addition, the principal character of the slide fastener 1 of the present embodiment 1 is the structure of the chain tooth 20 forming chain denture 12, and such as pull head 30, upper stop member 5 and be separated inlay 6 and there is pull head, upper stop member respectively that adopt with the generally well-known slide fastener with metallicity one side chain tooth in the past and be separated inlay structure identical in fact.

Such as, the pull head 30 of the present embodiment 1 possesses slider body 31 and rotatably remains on the pulling-on piece 32 on slider body 31.In addition, slider body 31 has upper flange 33 and lower wing plate 34, by the flange part 36 of the left and right on the left and right sides edge of the guide post 35 linked up between the leading section (shoulder mouth side end) of upper flange 33 and lower wing plate 34, the left and right sides edge being configured in upper flange 33 and lower wing plate 34 and erect the upper surface side that is arranged on upper flange 33 and for keeping the pulling-on piece erection column 37 of pulling-on piece 32.

Be formed with the shoulder mouth of the left and right be clipped in the middle by guide post 35 in the front end of slider body 31, and be formed with deutostoma in the rear end of slider body 31.In addition, between upper flange 33 and lower wing plate 34, be formed with the chain tooth path of navigation of the roughly alphabetical Y-shaped that the shoulder mouth of left and right is communicated with deutostoma.Further, between the upper flange part 36 being configured at the left and right of upper flange 33 of slider body 31 and the lower flange 36 of the left and right that is configured at lower wing plate 34, the band be formed for running through for the zipper strip 11 of left and right runs through gap.

The separation inlay 6 of the present embodiment 1 has the socket 9 of the rearward end of the plunger 7 of the rearward end being fixed on left side tooth chain band 10, the seat rod 8 being fixed on the rearward end of right side tooth chain band 10 and the present rod 8 of configuration.In addition, pull head 30 is not particularly limited with the material being separated inlay 6, can use arbitrary material.

Each tooth chain band 10 of the present embodiment 1 is arranged in the band side edge part of zipper strip 11 by multiple metal chain tooth 20 with predetermined spacing and is formed, and chain denture 12 utilizes the multiple chain teeth 20 be arranged on zipper strip 11 to be formed.In addition, engaged each other by the chain denture 12 of the tooth chain band 10 of left and right and form fastener chain.

Zipper strip 11 system of knitting or be compiled into band shape, have as the installation portion installed on band slide fastener goods band main part and be configured in band main part a lateral margin and for the band side edge part (also referred to as chain tooth installation portion) of multiple chain tooth 20 spread configuration.In addition, in the present embodiment 1, also the heart yearn portion formed in the mode bloated from the band positive and negative of zipper strip 11 can be set at the band side edge respect to one another of the zipper strip 11 of left and right.

The chain tooth 20 of the present embodiment 1 is formed by metals such as copper, copper alloy, aluminium alloys.As shown in Figure 2 to 4, this chain tooth 20 comprises the engageable head 21 with engagement projections 24 and engagement recess 25, the stem portion 22 of stretching out from one end of engageable head 21 and is branched off into two strands from one end of stem portion 22 and a pair leg 23 stretched out.

In addition, chain tooth 20 is configured to the one side chain tooth that engagement projections 24 and engagement recess 25 are configured in opposite each other side of engageable head 21 respectively, and with the center of chain tooth width (band both forward and reverse directions) be reference symmetry formed.

In addition, be arranged on the form of chain tooth 20 of the state on zipper strip 11 shown in Fig. 2 ~ Fig. 4, a pair leg 23 of the chain tooth 20 before installation is from stem portion 22 jag on chain tooth width, thus the chain tooth 20 before installing has the form of roughly Y-letter shape.

The engageable head 21 of the present embodiment 1 comprises: the head body 21a that the chain tooth gauge (size in strip length direction) between front surface (the 1st interarea) and rear surface (the 2nd interarea) is constant; The engagement projections 24 of the front-surface side being located at head body 21a is given prominence in mountain shape; And there is the engagement recess 25 that depression is located at the bottom surface sections of the back-surface side of head body 21a.

Front surface and the rear surface of head body 21a are formed as the tabular surface (with bandwidth direction parallel tabular surface) orthogonal with strip length direction, the constant dimension of head body 21a on strip length direction.As shown in Figure 5, engagement projections 24 and engagement recess 25 configure in the position mode in correspondence with each other of the engagement recess 25 of the position of the engagement projections 24 of the front-surface side of head body 21a and back-surface side.

In addition, in the present embodiment 1, on strip length direction, the size (height dimension of engagement projections 24) on the top (end face) from the front surface of head body 21a to engagement projections 24 and the size from the rear surface of head body 21a to the bottom surface sections of engagement projections 24 (depth dimensions of engagement recess 25) are set to predetermined size, particularly, the height dimension of engagement projections 24 is set to the value of b/a described later is size in predetermined scope.

The stem portion 22 of the present embodiment 1 is configured to, on chain dental length direction (bandwidth direction) from the ora terminalis position of engagement recess 25, to the position of the band clamping face 26 of the furcation of a pair leg 23 branch.Namely, in the present embodiment 1, stem portion 22 refers to the part configured till the position of the band clamping face 26 of furcation is played in the ora terminalis position of engagement recess 25 on chain dental length direction, using be configured in than this stem portion 22 by band outside part as engageable head 21, will be configured in than stem portion 22 by band inside part as leg 23.In addition, in the present embodiment 1, the front surface of stem portion 22 and the front surface of head body 21a form same plane, and the rear surface of stem portion 22 and the rear surface of head body 21a form same plane.In addition, front surface and the rear surface of leg 23 described later are formed as flexure plane or inclined plane, and are connected with the front surface of stem portion 22 and rear surface respectively.

The leg 23 of the present embodiment 1 stretches out to band inner side from stem portion 22, is configured with to the bending hook-shaped bend 23a in direction (inner side) close to each other at the apex zone (end regions by band inner side) of a pair leg 23.In addition, inner peripheral surface and the strip length direction of stem portion 22 and a pair leg 23 configure abreast, and this inner peripheral surface becomes the band clamping face 26 with zipper strip 11 close contact.

In addition, band outside of the present invention refers to when the overlooking of Fig. 1 than the position of the band ora terminalis of the zipper strip 11 of the chain tooth 20 be provided with as mounting object by band outside, and band inner side to refer to when the overlooking of Fig. 1 than the band ora terminalis of the zipper strip 11 of the chain tooth 20 be provided with as object by the position inside being with.

In addition, in the chain tooth 20 of the present embodiment 1, when overlooking slide fastener 1, a pair leg 23 is positioned at than base end part (end of stem portion 22 side) by the mode as the position in the front of the projected direction of engagement projections 24 using the top ends of leg 23, relative to head body 21a front surface and rear surface (or bandwidth direction) is bending obliquely stretches out.

In this case, the front surface of the part except top ends of leg 23 is formed as flexure plane, concavely bends in the mode being located front side the closer to the top (band inner side) of leg 23.In addition, the rear surface of leg 23 is formed as flexure plane, convexly bends in the mode being located front side the closer to the top (band inner side) of leg 23.Further, gauge (size in the strip length direction) constant on the whole of the part except top ends of leg 23.

In addition, in the present embodiment 1, a pair leg 23 bends as described above while stretch out, but in the present invention, a pair leg also can with the top ends of leg be positioned at than base end part position on the front mode relative to bandwidth direction obliquely linearly inclination stretch out.

In order to make the feel of chain tooth 20, skin sense of touch good, and make chain tooth 20 when pull head 30 slides not easily hooking to pull head 30, be provided with chamfered section 23b in the front-surface side of the top ends of the leg 23 of the present embodiment 1.This chamfered section 23b is made up of the face parallel with rear surface with the front surface of head body 21a.

In this case, the curved shape of leg 23 is formed as, and the position of the tabular surface of the position of the front surface of the top ends of leg 23, i.e. chamfered section 23b is configured in the forming region D of the head body 21a of the chain tooth 20 of engagement subject side on strip length direction.

By forming the curved shape of leg 23 like this, the curved shape of the uniqueness showing chain tooth 20 can be emphasized, and stably can guarantee the suitable installation strength of chain tooth 20 relative to zipper strip 11.In addition, the bending excessive of leg 23 can also be prevented, thus suppress to cause the flexibility of slide fastener 1 to reduce by the curved shape of leg 23.

In addition, when the leg 23 of chain tooth 20 has curved shape as described above, during the lateral pull drawn apart from one another of the zipper strip 11 about the zipper strip 11 of left and right being applied this under the state that the chain denture 12 of left and right has engaged, the chain tooth 20 at position being applied in this lateral pull acts on rotating torque.Therefore, with regard to the local of chain denture 12, when being subject to lateral pull, exist left and right chain tooth 20 to this about chain tooth 20 engagement depart from direction rotate situation.

Therefore, in the present embodiment 1, also to prevent the engagement of the chain tooth 20 of left and right from departing from even if bear lateral pull as described above, for this reason, the size of the installing space of adjustment chain tooth 20, the projecting height etc. of the engagement projections 24 of chain tooth 20, as shown in Figure 5 the size at the interval between the head body 21a of chain tooth 20 adjacent in a tooth chain band 10 is being defined as a, the size of the insertion depth of the engagement projections 24 of chain tooth 20 in the engagement recess 25 that strip length direction is inserted into the chain tooth 20 of engagement subject side is defined as b, the value of b/a is set as more than 0.25.

By like this value of described b/a being set as more than 0.25, can guarantee that the insertion depth that the engagement projections 24 of each chain tooth 20 is inserted in the engagement recess 25 of the chain tooth 20 of engagement subject side is larger.Thus, even if chain tooth 20 is subject to lateral pull and carry out rotating such motion, the engagement of the chain tooth 20 of left and right also can not depart from, and, the engagement projections 24 of chain tooth 20 is connected to the internal face of the engagement recess 25 of engagement subject side, and the rotational angle of chain tooth 20 can be prevented excessive.

Thus, the engagement of the chain tooth 20 of left and right can be made not depart from, stably can maintain the engagement of the chain denture 12 of left and right, therefore, it is possible to improve the horizontal tensile strength of slide fastener 1.

In addition, as described above, the engagement projections 24 of chain tooth 20 is connected to the internal face of the engagement recess 25 of engagement subject side, the rotation of chain tooth 20 can be suppressed, therefore, relative to normal condition (Japanese: usually body) chain tooth 20 towards for, be subject to lateral pull and the maximum rotation angle of chain tooth 20 of rotating is restricted to less than 20 °, be preferably less than 15 °.

And, in the present embodiment 1, be more than 0.25 by making the value of described b/a, engagement projections 24 can be inserted into deeper in the engagement recess 25 of engagement subject side, therefore, can also improve the anti-top intensity of chain denture 12, this anti-top intensity is for representing the power of the engagement of chain denture 12 under the effect of the external force of band both forward and reverse directions.

On the other hand, in the present embodiment 1, by the value of described b/a is set as less than 0.30, can prevent the engagement projections 24 of each chain tooth 20 from entering too far in the engagement recess 25 of the chain tooth 20 of engagement subject side.Thereby, it is possible to suppress the flexibility being in the tooth chain band 10 (fastener chain) of the left and right of engagement to reduce, stably guarantee suitable flexibility.

In addition, in the present embodiment 1, engagement projections 24 is inserted into the insertion depth b in the engagement recess 25 of the chain tooth 20 of engagement subject side on strip length direction, the ratio of the outstanding size c given prominence to from the front surface of head body 21a on strip length direction relative to engagement projections 24 (namely, value × 100 of b/c) be set to less than more than 65% 85%, be preferably less than more than 70% 80%.

Be more than 65% by making the insertion depth of engagement projections 24 like this relative to the ratio of outstanding size, under the engagement of the chain denture 12 of left and right, the engagement projections 24 of chain tooth 20 is inserted in the engagement recess 25 of the chain tooth 20 of engagement subject side deeper, therefore, improve the joggled strength of slide fastener 1, stably can guarantee horizontal tensile strength, the anti-top intensity expected.

In addition, be less than 85% by making the insertion depth of engagement projections 24 relative to the ratio of outstanding size, the engagement of the chain denture 12 of left and right can be prevented excessively strong, prevent the chain denture of the left and right of having engaged hardening and stably guarantee the suitable flexibility of slide fastener 1, and can make by the slip of pull head 30 cause make left and right chain denture 12 engage action, separation action smooth and easy, stably can guarantee the good sliding of pull head 30.

In addition, in the present embodiment 1, as previously mentioned, the front surface of head body 21a and rear surface are configured on the same tabular surface orthogonal with strip length direction with the front surface of stem portion 22 and rear surface respectively, and the front surface of leg 23 and rear surface are formed as respectively relative to head body 21a and the front surface of stem portion 22 and the flexure plane of rear surface oblique bending.

Therefore, the tabular surface orthogonal with strip length direction and relative to this tabular surface oblique bending flexure plane between border be set at the position position of inner peripheral surface on chain dental length direction (bandwidth direction) of furcation (that is, be) on the border between stem portion 22 and leg 23.

But, in the present invention, boundary position between tabular surface and flexure plane is not limited thereto, as long as the front surface of head body 21a and rear surface are formed as the tabular surface orthogonal with strip length direction and leg 23 is bending obliquely relative to this tabular surface stretches out, just the boundary position between tabular surface and flexure plane can also be set in the forming region of the stem portion 22 on chain dental length direction (bandwidth direction).That is, can be formed respectively relative to the front surface of head body 21a and the flexure plane of rear surface oblique bending with the stem portion 22 and leg 23 continuous print mode of chain tooth 20.

In addition, in the present invention, because the boundary position between tabular surface and flexure plane easily to guarantee the joggled strength expected away from head body 21a can make the dimensionally stable of engageable head 21, therefore, the boundary position between tabular surface and flexure plane is preferably set in the position on the border between stem portion 22 and leg 23 as the present embodiment 1.

Then, the method for the chain tooth 20 manufacturing the present embodiment 1 is described with reference to Fig. 8 and Fig. 9.

First, by using a pair mould 41a, the 41b up and down shown in Fig. 8, punch process is carried out to the flat wire 40 formed by metals such as copper, copper alloy, aluminium alloys, make the local plastic deformation of this flat wire 40, thus form engagement projections 24 and engagement recess 25 with predetermined spacing.

Secondly, the cutting punch 42 shown in Fig. 9 and blanking die 43 is used to carry out along the such Punching Technology of the peripheral shape of chain tooth 20 flat wire 40 being formed with engagement projections 24 and engagement recess 25.

This blanking die 43 is formed the punching 43a that cross sectional shape is corresponding with the peripheral shape of chain tooth 20.In addition, be provided with in the top ends of cutting punch 42: head side par 42a, it has the tabular surface abutted corresponding to the part of head body 21a and stem portion 22 with flat wire 40; Accommodating recess 42b, its depression is located on the 42a of this head side par, for accommodating engagement projections 24; Leg forming portion 42c, it has the flexure plane of the tabular surface oblique bending relative to head side par 42a; And chamfered section forming portion 42d, it is located at the position corresponding with the top ends of the leg 23 of chain tooth 20.In this case, the flexure plane of leg forming portion 42c convexly bends to the inclination ascent direction as the direction with opposition side, die-cut direction relative to the tabular surface of head side par 42a.In addition, chamfered section forming portion 42d has the face with the flat faces parallel of head side par 42a.

By using cutting punch 42 as described above and blanking die 43, Punching Technology is carried out to the flat wire 40 being formed with engagement projections 24 and engagement recess 25 with what make the front-surface side of cutting punch 42 and chain tooth 20 in the face of the mode of push up, the leg 23 of die-cut chain tooth 20 can be made while punching out the chain tooth 20 with predetermined peripheral shape to be plastic deformation to and roll to the projected direction of engagement projections 24 curved shape tiltedly bent relative to the front surface of head body 21a and rear surface.

Particularly, in this case, make leg forming portion 42c contact with flat wire 40 during by starting die-cut making head side par 42a contact with flat wire 40 and leg 23 bent, can while utilizing cutting punch 42 die-cut chain tooth 20, make the leg 23 of this chain tooth 20 smooth and easy and be stably deformed into predetermined curved shape.

Further, by being provided with chamfered section forming portion 42d in the top ends of cutting punch 42, chamfered section forming portion 42d can be utilized stably to form chamfered section 23b in the top ends of the leg 23 of this chain tooth 20 when die-cut chain tooth 20.

Particularly, in the present embodiment 1, when die-cut chain tooth 20, the engagement projections 24 be previously formed on flat wire 40 is housed in the accommodating recess 42b of the top ends being located at cutting punch 42.Thereby, it is possible to easily and stably the die cut section of flat wire 40 is located relative to cutting punch 42 and blanking die 43, and can engagement projections 24 be prevented to be out of shape when die-cut chain tooth 20 and stably keep the shape of engagement projections 24.

By carrying out Punching Technology as described above, the chain tooth 20 of pair of leg portion 23 jag can being obtained, afterwards, by carrying out grinding step, coating process etc. to the chain tooth 20 obtained, the chain tooth 20 of the present embodiment 1 can be manufactured.

And, the chain tooth 20 of the present embodiment 1 manufactured like this have a pair leg 23 from the base end part of stem portion 22 side towards top ends on chain tooth width the form of jag.Therefore, to the band side edge part inserting zipper strip 11 between a pair leg 23, carry out the processing of a pair leg 23 being riveted to direction, inner side close to each other afterwards and make chain tooth 20 plastic deformation, thus chain tooth 20 is installed (insert) on zipper strip 11.

Thereby, it is possible to manufacture tooth chain band 10.In addition, by the tooth chain band of manufacture is combined 10 two by one group, the chain denture 12 of each tooth chain band 10 is intermeshed, can fastener chain be obtained.Further, by installing pull head 30 in the chain denture 12 of this fastener chain, and by upper stop member 5 and the precalculated position being separated inlay 6 and being fixed on fastener chain, can the slide fastener 1 of the present embodiment 1 shown in shop drawings 1.

In the slide fastener 1 of the present embodiment 1 obtained like this, leg 23 due to each chain tooth 20 has relative to the front surface of head body 21a and the rear surface curved shape to the projected direction lateral bend of the engagement projections 24 in strip length direction, therefore, its exterior quality is completely different from the slide fastener with common chain tooth in the past, and that can seek with other goods is differential.

And, be formed as curved shape by leg 23 and be fixed on zipper strip 11, chain tooth 20 is not easily to front, the back sweep in strip length direction, therefore, even if reduce slightly the thickness of such as leg 23 (namely, reduce the size of leg 23 on strip length direction (gauge)), also can stably keep chain tooth 20 relative to the attitude of zipper strip 11.In addition, be formed as curved shape by leg 23, the contact area of leg 23 and zipper strip 11 increases, and therefore, can also expect that chain tooth 20 improves relative to the installation strength of zipper strip 11.

In addition, in the slide fastener 1 of the present embodiment 1, no matter whether leg 23 is formed as curved shape, the front surface of head body 21a and rear surface all configure abreast with bandwidth direction, the engageable head 21 of each chain tooth 20 is formed as roughly the same with the engageable head of common chain tooth in the past, on this basis, the value of aforesaid b/a, the insertion depth of engagement projections 24 are set in predetermined scope relative to the ratio of outstanding size.

Thus, in the slide fastener 1 of the present embodiment 1, by making pull head 30 slide, the chain denture 12 of left and right can be made to engage swimmingly, in addition, more stably can guarantee the good sliding of pull head 30.Further, can stably obtain and the horizontal tensile strength with more than the slide fastener same degree of common chain tooth in the past and anti-top intensity.

In addition, in the present embodiment 1, leg 23 is formed as curved shape, and this leg 23 relative to the bending direction of the front surface of head body 21a and rear surface all towards engagement projections 24 projected direction outstanding relative to head body 21a and front side.And, in the slide fastener 1 of the present embodiment 1, the engagement projections 24 of chain tooth 20 slides to make the glide direction that slide fastener 1 is closed outstanding to pull head 30 relative to head body 21a, such as, when chain tooth 20 moves in the chain tooth path of navigation of pull head 30 as shown in Figure 6, engagement projections 24 is not outstanding towards the deutostoma side of pull head 30 and give prominence to towards shoulder mouth side.

Therefore, when making pull head 30 slide to slide fastener closing direction, the chain tooth 20 of movement in the shoulder mouth side direction chain tooth path of navigation of pull head 30 is easily movable along bandwidth direction near the shoulder mouth of pull head 30.But, in the present embodiment 1, because the leg 23 of chain tooth 20 is bending towards the front identical relative to the projected direction of head body 21a with engagement projections 24, therefore, even if chain tooth 20 is movable and such as contact with the left and right flange part 36 of pull head 30 near the shoulder mouth of pull head 30, the leg 23 of chain tooth 20 is also not easily made to damage flange part 36.

In addition, due to be positioned at pull head 30 deutostoma near chain tooth 20 be in engagement, and its position on bandwidth direction is limited by the left and right flange part 36 of pull head 30, and therefore, chain tooth 20 is not easily movable along bandwidth direction near the deutostoma of pull head 30.

Therefore, even if the leg 23 of chain tooth 20 bends toward the front, slide to direction that slide fastener 1 is opened at such as pull head 30 and the chain tooth 20 that makes to be in the left and right of engagement moves in chain tooth path of navigation from the deutostoma of pull head 30 time, the left and right flange part 36 that the leg 23 hooking pull head 30 of chain tooth 20 also not easily occurs causes the situation of damage.

And, in the slide fastener 1 of the present embodiment 1, because the leg 23 of chain tooth 20 bends toward the front, therefore, such as, can make as shown in Figure 7 the leg 23 of the chain tooth 20 of the rearmost end being configured in chain denture 12 and and the interval that is adjacent between the plunger 7 that configures or seat rod 8 of the rearward end of chain denture 12 increase gradually along with the top ends tending to leg 23.

Thereby, it is possible to promote the local flexibility of the part between chain tooth 20 and plunger 7 or between chain tooth 20 and seat rod 8 of tooth chain band 10, therefore, it is possible to easily make tilting to bandwidth direction towards relative to chain denture 12 of such as plunger 7 or seat rod 8.

By can make like this plunger 7 or seat rod 8 towards inclination, can carry out more swimmingly by plunger 7 via the chain tooth path of navigation of pull head 30 be inserted into socket 9 operation, carry out the operation of being extracted from socket 9 via the chain tooth path of navigation of pull head 30 by plunger 7.Therefore, it is possible to improve the operability being separated inlay 6.

In addition, in the present embodiment 1, be separated inlay 6 there is plunger 7, seat rod 8 and socket 9 as aforementioned and form, but the present invention is not limited thereto, the present invention also similarly can be applied to and such as on the slide fastener of the two open form of the what is called that the tooth chain band of left and right can be made all to be separated in both sides, front and back, arrange the situation being separated inlay.

Such as by two pull heads to make deutostoma each other relatively and the mode that can slide is arranged in the chain denture of the tooth chain band of left and right, and, plunger is fixed in the rearward end of a tooth chain band, plunger is fixed in the rearward end of another tooth chain band, thus form the separation inlay of the slide fastener of this pair of open form, the socket that common separation inlay possesses is not set.

In addition, when manufacturing the chain tooth 20 of above-described embodiment 1, after flat wire 40 defines engagement projections 24 and engagement recess 25, as shown in Figure 9, make cutting punch 42 carry out Punching Technology with face (the 1st interarea) side being formed with engagement projections 24 of flat wire 40 to top, thus manufacture chain tooth 20.

But, in the present invention, also can by after define engagement projections 24 and engagement recess 25 on flat wire 40, example blanking die 48 as shown in Figure 10 and cutting punch 47 carry out Punching Technology to manufacture chain tooth 20 with face (the 2nd interarea) side being formed with engagement recess 25 of flat wire 40 to the mode of pushing up to make cutting punch 47.

In this case, blanking die 48 is formed with the punching 48a with the cross sectional shape corresponding with the peripheral shape of chain tooth 20.In addition, be provided with in the top ends of cutting punch 47: head side par 47a, it has the tabular surface abutted with the part corresponding to head body 21a and stem portion 22 of flat wire 40; Insert teat 47b, it is given prominence to and is located on the 47a of this head side par, is inserted by engagement recess 25; And leg forming portion 47c, it has the flexure plane concavely bent to inclination descent direction relative to the tabular surface of head side par 47a.

By use this cutting punch 47 and blanking die 48 with make cutting punch 47 be in chain tooth 20 back-surface side Punching Technology is carried out to the flat wire 40 being formed with engagement projections 24 and engagement recess 25 in the face of the mode of pushing up, the leg 23 of die-cut chain tooth 20 can be made while punching out the chain tooth 20 with predetermined peripheral shape to be plastic deformation to the curved shape bent obliquely to the projected direction of engagement projections 24 relative to the front surface of head body 21a and rear surface.

In addition, in this case, by the outstanding insertion teat 47b being located at the top ends of cutting punch 47 is inserted to the engagement recess 25 be previously formed on flat wire 40, can easily and stably the die cut section of flat wire 40 is located relative to cutting punch 47 and blanking die 48, and engagement recess 25 can be prevented to be out of shape when die-cut chain tooth 20, stably keep the shape of engagement recess 25.

And, by carrying out above-mentioned Punching Technology, the chain tooth 20 of pair of leg portion 23 jag can be obtained.In this case, when die-cut chain tooth 20, sometimes also to cut the front-surface side of leg 23 top ends of chain tooth 20 and form chamfered section 23b.Next, by carrying out to obtained chain tooth 20 processing forming chamfered section 23b in the top ends of leg 23 as required, carrying out grinding step, coating process etc. afterwards, one side chain tooth of the present invention can be manufactured.

Embodiment 2

Figure 11 is the front view of the chain tooth watching the present embodiment 2 from strip length direction, and Figure 12 is the sectional view of this chain tooth.

In the present embodiment 2, shape and the aforesaid embodiment 1 of each chain tooth are different, and other structure is same with the slide fastener of aforesaid embodiment 1.Therefore, in the present embodiment 2, mainly chain tooth is described.

The band side edge part that the slide fastener of the present embodiment 2 has a zipper strip in left and right be disposed with multiple chain tooth 50 and be formed with the pair of right and left tooth chain band of chain denture, the pull head that configure in the mode can slided along chain denture, to be adjacent to the upper stop member that configures with the front of chain denture and be adjacent to configure with the rear end side of chain denture be separated inlay.

The chain tooth 50 of the present embodiment 2 is formed by metals such as copper, copper alloy, aluminium alloys.As is illustrated by figs. 11 and 12, this chain tooth 50 comprises the engageable head 51 with engagement projections 54 and embedded space portion 55, the stem portion 52 of stretching out from one end of engageable head 51 and is branched off into two strands from one end of stem portion 52 and a pair leg 53 stretched out.

In addition, chain tooth 50 is configured to two-sided chain tooth, respectively be configured with one group of engagement projections 54 and embedded space portion 55 in front surface (the 1st interarea) side of engageable head 51 and rear surface (the 2nd interarea) side, and chain tooth 50 with the center of chain tooth width (band both forward and reverse directions) be reference symmetry formed.

The engageable head 51 of the present embodiment 2 comprises the constant head body 51a of chain tooth gauge (size in strip length direction) between front surface and rear surface, give prominence to the front surface and the outstanding engagement projections 54 being located at rear surface that are located at head body 51a, and the extension 57 of left and right to stretch out towards band outside (apical head side) from stem portion 52 at the front surface of head body 51a and in the rear surface of head body 51a from the extension 57 of the left and right that stem portion 52 is stretched out towards band outside (apical head side).

The head body 51a of engageable head 51 is configured to have predetermined thickness, poor compared to stem portion 52 height of formation and chain tooth gauge is reduced.In addition, front surface and the rear surface of head body 51a are formed as the tabular surface (with bandwidth direction parallel tabular surface) orthogonal with strip length direction, the constant dimension in the strip length direction of head body 51a respectively.

When watching this engageable head 51 from front side as shown in Figure 1, top edge and the chain tooth width of head body 51a configure abreast, and the lateral margin of head body 51a to tilt relative to chain dental length direction in the less mode of the size of the chain tooth width of the head body 51a the closer to top edge or bending.

The each engagement projections 54 being configured in the front-surface side of head body 51a and back-surface side respectively at the central portion of chain tooth width from the front surface of head body 51a and the projecting Cheng Shanzhuan in rear surface, be formed in the position separated with stem portion 52 within a predetermined distance.

The extension 57 of left and right has predetermined chain tooth gauge in the position be separated from each other from head body 51a protuberance, and forwards stretches out in the mode of the side, side, left and right from stem portion 52 towards engagement projections 54.In this case, between engagement projections 54 and the extension 57 of left and right, predetermined gap is provided with.In addition, the front surface of the extension 57 of left and right and rear surface are configured in same plane with the front surface of stem portion 52 and rear surface respectively.

On the engageable head 51 of the present embodiment 2, be formed with in the front-surface side of head body 51a and back-surface side the embedded space portion 55 surrounded by the extension 57 of engagement projections 54, left and right and stem portion 52 respectively.Each embedded space portion 55 has bottom surface 55a, and the height and position of the chain tooth thickness direction (strip length direction) of this bottom surface 55a is set at position identical with rear surface with the front surface of head body 51a respectively.

The bottom surface 55a of stem portion 52 self-embedding spatial portion 55 on chain tooth thickness direction of the present embodiment 2 swells, and the chain tooth gauge of this stem portion 52 is formed be greater than the chain tooth gauge of the head body 51a of engageable head 51.This stem portion 52 is configured to the position of the band clamping face 56 of the furcation making a pair leg 53 branch on chain dental length direction (bandwidth direction) from the ora terminalis position of the bottom surface 55a in embedded space portion 55.

Namely, in the present embodiment 2, stem portion 52 refers to the part till the position of the band clamping face 56 being configured to furcation on chain dental length direction from the ora terminalis position of the bottom surface 55a in embedded space portion 55, using be configured in than this stem portion 52 by band outside part as engageable head 51, will be configured in than stem portion 52 by band inside part as leg 53.

The leg 53 of the present embodiment 2 stretches out to band inner side from stem portion 52, is configured with to approximating direction (inner side) bending hook-shaped bend 53a at the apex zone (end regions of band inner side) of a pair leg 53.In addition, inner peripheral surface and the strip length direction of stem portion 52 and a pair leg 53 configure abreast, and this inner peripheral surface becomes the band clamping face 56 with zipper strip close contact.

In addition, in the chain tooth 50 of the present embodiment 2, a pair leg 53 with the top ends of leg 53 be positioned at than base end part (end of stem portion 52 side) position on the front mode relative to head body 51a front surface and rear surface (or bandwidth direction) is bending obliquely stretches out.

In this case, the front surface of the part except top ends of leg 53 is formed as the flexure plane that concavely bends in the mode being located front side the closer to the top (band inner side) of leg 53.In addition, the rear surface of leg 53 is formed as the flexure plane that convexly bends in the mode being located front side the closer to the top (band inner side) of leg 53.Further, gauge (size in the strip length direction) constant on the whole of the part except top ends of leg 53.

In addition, in the present invention, a pair leg 53 also can with the top ends of leg 53 be positioned at than base end part position on the front mode relative to bandwidth direction obliquely linearly inclination stretch out.

In addition, in order to make the hand sense of touch of chain tooth 50, skin sense of touch good and make chain tooth 50 not easily hook pull head when pull head slides, chamfered section 53b is provided with in the front-surface side of the top ends of the leg 53 of the present embodiment 2.This chamfered section 53b is made up of the face parallel with rear surface with the front surface of head body 51a.

In this case, the curved shape of leg 53 is formed as, the position of the tabular surface of the position of the front surface of the top ends of leg 53, i.e. chamfered section 53b, strip length direction is configured in the forming region of the head body 51a of the chain tooth 50 of engagement subject side.

And, in the present embodiment 2, engagement projections 54 is inserted into the insertion depth in the engagement recess 55 of the chain tooth 50 of engagement subject side on strip length direction, and the ratio of the outstanding size of giving prominence to from the front surface of head body 51a on strip length direction relative to engagement projections 54 is set to less than more than 65% 85%.

By making the insertion depth of engagement projections 54 be more than 65% relative to the ratio of outstanding size, the joggled strength of slide fastener 1 can be improved, stably can guarantee horizontal tensile strength, the anti-top intensity expected.In addition, by making this ratio be less than 85%, the engagement of chain denture 12 of left and right can be prevented excessively strong, stably can guarantee the suitable flexibility of slide fastener, the good sliding of pull head.

In addition, in the present embodiment 2, the smooth front surface of the stem portion 52 configured in the mode orthogonal with strip length direction and rear surface and relative to the leg 53 of this tabular surface oblique bending flexure plane between border be set at the position on the border between stem portion 52 and leg 53.But in the present invention, the boundary position between the tabular surface of stem portion 52 and the flexure plane bent relative to this tabular surface also can be set in the forming region of the stem portion 52 on chain dental length direction (bandwidth direction).

When manufacturing the chain tooth 50 of the present embodiment 2 as described above, first, by using upper and lower a pair mould, punch process is carried out to the flat wire formed by metals such as copper, copper alloy, aluminium alloys, make this flat wire local plastic deformation, form engagement projections 54 and embedded space portion 55 in two faces of flat wire with predetermined spacing respectively.

Then, cutting punch and blanking die is used to carry out along the such Punching Technology of the peripheral shape of chain tooth 50 flat wire being formed with engagement projections 54 and embedded space portion 55.

In this case, blanking die is formed with the cross sectional shape punching corresponding with the peripheral shape of chain tooth 50.In addition, be at least provided with in the top ends of cutting punch: head side par, it has the tabular surface abutted with the head body 51a of flat wire; Accommodating recess, its depression is located at this head side par, for accommodating engagement projections 54; And leg forming portion, it has the flexure plane bent obliquely relative to the tabular surface of head side par.

By using this cutting punch and blanking die to carry out Punching Technology, the leg 53 of die-cut chain tooth 50 can be made while punching out the chain tooth 50 with predetermined peripheral shape to be plastic deformation to relative to head body 51a and the front surface of stem portion 52 and the curved shape of rear surface oblique bending.And, by carrying out grinding step, coating process etc. to obtained chain tooth 50, the chain tooth 50 of the present embodiment 2 can be manufactured.

The chain tooth 50 of the present embodiment 2 produced in the manner described above has the form of a pair leg 53 jag, therefore, by inserting the band side edge part of zipper strip between a pair leg 53, carry out the processing of a pair leg 53 being riveted to direction, approximating inner side afterwards, tooth chain band zipper strip being provided with chain tooth 50 can be manufactured on.In addition, by the tooth chain band of manufacture is combined two by one group, the chain denture of each tooth chain band is intermeshed, can fastener chain be obtained.

The slide fastener of the present embodiment 2 using so obtained fastener chain to form, its exterior quality from the past the slide fastener with common chain tooth completely different.In addition, be formed as curved shape by leg 53 and be fixed on zipper strip, can stably keep chain tooth 50 relative to the attitude of zipper strip.

And, in the slide fastener of the present embodiment 2, no matter whether leg 53 is formed as curved shape, and the front surface of head body 51a and rear surface all configure abreast with bandwidth direction, and the engageable head 51 of each chain tooth 50 is roughly the same with the engageable head of common chain tooth in the past.

Thus, in the slide fastener of the present embodiment 2, can the chain denture of left and right be made by making pull head slide to engage swimmingly, in addition, stably can guarantee the good sliding of pull head.In addition, can stably obtain and the horizontal tensile strength with more than the slide fastener same degree of common chain tooth in the past and anti-top intensity.

description of reference numerals

1, slide fastener; 5, upper stop member; 6, inlay is separated; 7, plunger; 8, seat rod; 9, socket; 10, tooth chain band; 11, zipper strip; 12, chain denture; 20, chain tooth; 21, engageable head; 21a, head body; 22, stem portion; 23, leg; 23a, bend; 23b, chamfered section; 24, engagement projections; 25, engagement recess; 26, clamping face is with; 30, pull head; 31, slider body; 32, pulling-on piece; 33, upper flange; 34, lower wing plate; 35, guide post; 36, flange part; 37, pulling-on piece erection column; 40, flat wire; 41a, 41b, mould; 42, cutting punch; 42a, head side par; 42b, accommodating recess; 42c, leg forming portion; 42d, chamfered section forming portion; 43, blanking die; 43a, punching; 47, cutting punch; 47a, head side par; 47b, insertion teat; 47c, leg forming portion; 48, blanking die; 48a, punching; 50, chain tooth; 51, engageable head; 51a, head body; 52, stem portion; 53, leg; 53a, bend; 53b, chamfered section; 54, engagement projections; 55, embedded space portion; 55a, bottom surface; 56, clamping face is with; 57, extension; Interval between the head body of a, adjacent chain tooth; The insertion depth of b, engagement projections; The outstanding size of c, engagement projections; The forming region of D, head body.

Claims

1. a fastener chain, it comprises a pair tooth chain band (10), this a pair tooth chain band (10) has pair of right and left zipper strip (11) and utilizes riveted joint processing to be arranged on multiple metal chain teeth (20) of the band side edge part respect to one another of described zipper strip (11) along strip length direction, described chain tooth (20) has engageable head (21), be configured in the stem portion (22) of the end side of described engageable head (21), and be branched off into two strands and a pair leg (23) stretched out from one end of described stem portion (22), described engageable head (21) comprises the head body (21a) with the 1st interarea and the 2nd interarea with described 1st interarea opposition side, the outstanding engagement projections (24) be located on described 1st interarea of described head body (21a), and the engagement recess (25) be located on described 2nd interarea of described head body (21a) that caves in, the feature of this fastener chain is,

Described 1st interarea of described head body (21a) and the 2nd interarea are the tabular surfaces orthogonal with strip length direction,

Leg described in a pair (23) stretches out relative to described 1st interarea of described head body (21a) and the 2nd interarea oblique bending or inclination.

2. fastener chain according to claim 1, wherein,

Leg described in a pair (23) is bending or tilt to the projected direction of described engagement projections (24) relative to described 1st interarea of described head body (21a) and the 2nd interarea.

3. a fastener chain, it comprises a pair tooth chain band, this a pair tooth chain band has pair of right and left zipper strip and utilizes riveted joint processing to be arranged on multiple metal chain teeth (50) of the band side edge part respect to one another of described zipper strip along strip length direction, described chain tooth (50) has engageable head (51), be configured in the stem portion (52) of the end side of described engageable head (51), and be branched off into two strands and a pair leg (53) stretched out from one end of described stem portion (52), described engageable head (51) comprises the head body (51a) with the 1st interarea and the 2nd interarea with described 1st interarea opposition side, give prominence to and be located at described 1st interarea of described head body (51a) and the engagement projections (54) of the 2nd interarea, and be configured in the embedded space portion (55) embedded between the described engagement projections (54) of described 1st interarea and the 2nd interarea side and described stem portion (52) and for the described engagement projections (54) of confession engagement object, the feature of this fastener chain is

Described 1st interarea of described head body (51a) and the 2nd interarea are the tabular surfaces orthogonal with strip length direction,

Leg described in a pair (53) stretches out relative to described 1st interarea of described head body (51a) and the 2nd interarea oblique bending or inclination.

4. the fastener chain according to any one of claims 1 to 3, wherein,

The top ends of described leg (23,53) with the 1st interarea of the face of the described 1st interarea same side of described engageable head (21,51) and the top ends of described leg (23,53), strip length direction is configured in the forming region (D) of the described head body (21a, 51a) of the described engageable head (21,51) of the described chain tooth (20,50) of engagement subject side.

5. the fastener chain according to any one of Claims 1 to 4, wherein,

Described engagement projections (24,54) is inserted into the insertion depth in the described engagement recess (25) of described chain tooth (20,50) of engagement subject side or described embedded space portion (55) on strip length direction, and the ratio of the outstanding size of giving prominence to from described 1st interarea of described head body (21a, 51a) on strip length direction relative to described engagement projections (24,54) is set to less than more than 65% 85%.

6. the fastener chain according to any one of Claims 1 to 5, wherein,

Interval between the described head body (21a, 51a) of chain tooth (20,50) adjacent in a described tooth chain band (10) is being defined as a, the insertion depth described engagement projections (24,54) be inserted on strip length direction in the described engagement recess (25) of described chain tooth (20,50) of engagement subject side or described embedded space portion (55) is set to b, the value of b/a is set to less than more than 0.25 0.30.

7. the fastener chain according to any one of claim 1 ~ 6, wherein,

1st interarea of described leg (23,53) has the fillet surface of described 1st interarea with described head body (21a, 51a) and the 2nd main surface parallel in the top ends of described leg (23,53).

8. a slide fastener, is characterized in that,

The chain denture (12) that utilize multiple described chain tooth (20,50) formed of this slide fastener by the fastener chain according to any one of claim 1 ~ 7 installs pull head (30) and forms,

Leg described in a pair (23,53) carries out sliding making glide direction that described in a pair, tooth chain band (10) engages bending or tilt relative to described 1st interarea of described head body (21a, 51a) and the 2nd interarea towards described pull head (30).

9. slide fastener according to claim 8, wherein,

This slide fastener comprises separation inlay (6), this separation inlay (6) has the plunger (7) of the rearward end being fixed on a described tooth chain band (10) and is fixed on the seat rod (8) of rearward end of tooth chain band (10) described in another

The interval be configured between the described leg (23,53) of the described chain tooth (20,50) of the rearmost end of described chain denture (12) and described plunger (7) or described seat rod (8) increases gradually along with the top ends tending to described leg (23,53).

10. the manufacture method of a chain tooth, the method is for the manufacture of metal chain tooth (20), this metal chain tooth (20) has engageable head (21), be configured in the stem portion (22) of the end side of described engageable head (21), and be branched off into two strands and the pair of meshing protuberance (24) stretched out from one end of described stem portion (22), described engageable head (21) comprises the head body (21a) with the 1st interarea and the 2nd interarea with described 1st interarea opposition side, the outstanding engagement projections (24) being located at described 1st interarea of described head body (21a), and depression is located at the engagement recess (25) having end shape of described 2nd interarea of described head body (21a), the feature of the manufacture method of this chain tooth is,

This manufacture method comprises the following steps:

Carry out stamping to metal flat wire (40), form described engagement projections (24) and described engagement recess (25);

Use blanking die (43,48) and cutting punch (42,47) that the local of the described flat wire (40) being formed with described engagement projections (24) and described engagement recess (25) is die-cut into described chain tooth (20), this cutting punch (42,47) has the head side par (42a, 47a) that possesses the tabular surface abutted with described head body (21a) and relative to the described tabular surface oblique bending of described head side par (42a, 47a) or the leg forming portion (42c, 47c) of inclination in punch tip portion; And

When die-cut described chain tooth (20), make leg described in a pair (23) relative to described 1st interarea of described head body (21a) and the 2nd interarea oblique bending or inclination.

The manufacture method of 11. chain teeth according to claim 10, wherein,

Described cutting punch (42,47) has accommodating recess (42b) or inserts teat (47b), this accommodating recess (42b) depression is located at described head side par (42a), for accommodating described engagement projections (24), this insertion teat (47b) is outstanding is located at described head side par (47a), can be inserted in described engagement recess (25).

The manufacture method of 12. chain teeth according to claim 10 or 11, wherein,

This manufacture method comprises such step:

When die-cut described chain tooth (20), start making described head side par (42a) contact with described flat wire (40) die-cut after, described leg forming portion (42c) contacts with described flat wire (40) and makes leg described in a pair (23) bending or tilt.

The manufacture method of 13. chain teeth according to any one of claim 10 ~ 12, wherein,

This manufacture method comprises the following steps:

The face bending relative to the described tabular surface of described head side par (42a) to the direction with opposition side, die-cut direction or tilt is provided with described leg forming portion (42c); And

The chamfered section forming portion (42d) with the face of the described flat faces parallel of described head side par (42a) is had in the position setting tool corresponding with the top ends of the described leg (23) of described chain tooth (20) of described blanking die (43).