CN101247745A - Slider for hidden slide fastener - Google Patents

Abstract

A slider (100) for a hidden slide fastener, comprising a pair of first flanges (102, 103) of reverse L-shape in cross section positioned along the right and left side edges of a lower vane (101) and a guide strut (104) vertically installed at one end center part of the lower vane (101) and having an approximately elliptic horizontal cross section. A second flange (105) having a rectangular-parallelepiped plate part (105a) and a wedge-like plate part (105b) integrally formed on the upper surface of the guide strut (104) and extended outward along the outer periphery of the guide strut (104) is installed in a wedge-like space between the upper plate portions (102a, 103a) of the pair of first flanges (102, 103). The height of the lower surface of the shoulder side end part of the second flange (105) is set larger than the heights of the other areas, and a tapered surface (105c) having tapered angles (a1 to a5) gradually increased stepwise toward a rear opening side is formed on the peripheral surface thereof. As a result, an element can be smoothly introduced into the slider even if the slider is applied to a seat cover such as a seat sheet and a strong horizontal pulling force is applied thereto when the slide fastener is closed.

Description

Slider for hidden slide fastener

Technical field

The present invention relates to when the locking slide fastener, can not show out the pull head that the hidden slide fastener of the form of portion is used as the main body of the pull head of its shutter member, particularly relate to when the locking slide fastener, even strong lateral pull effect also can be carried out the pull head that the hidden slide fastener of slick and sly pull head operation is used.

Background technology

Though this hidden slide fastener is used for the clothes class that the women uses more, also appear at other field in recent years, for example the seat etc. of attending a banquet of automobile, train.The seat of attending a banquet is that seat cover is covered on the cushion body that is formed in advance on the framework.At this moment, make the size of seat cover littler, under compressive state, cover the cushion body, do one's utmost to be suppressed at that the face shaping aspect produces is loose spacious, the generation of distortion etc. than the appearance and size of cushion body.In addition,,, also revert to original shape effectively, prevent that shape from damaging leaving when attending a banquet even for the load of corresponding human body when taking a seat easily etc. distributes and strain.

Seat cover is normally by by lamination process etc., and epidermal area, thin resilient middle layer and the thin plate of laminated integratedization of inside basic layer of cloth are constituted, and described epidermal area is made of natural leather, dermatine or braid etc. with various structures; Described thin resilient middle layer is made of polyurethane foam thin plate etc.; Described inside basic layer of cloth is by using superfine sliver, weave into or be made into the thin formations such as braid that obtain.Usually,, cut into the thin plate sheet that constitutes by multi-disc,, make three-dimensionally, make seat cover these thin plate sheet combinations with the shape of these thin plates according to the seat of attending a banquet.But, if a lot of by the situation of making the integral body of making seat cover, then seat cover can not be covered on the cushion body of attending a banquet with complicated face shaping.Therefore, be to make the part of not making in advance in the past, after covering the cushion body, make the above-mentioned part of not making by hand.

But in the making of this hand seam, owing to make the difference of operating personnel's technical ability, the product of finishing are easy to generate quality, make temporal differences.Therefore, in recent years, in order to get rid of hand seam, and in the part of the portion of making of seat cover, for example, along rolling portion, use slide fastener, it is a lot of particularly to use the pull head main body can not show out the situation of hidden slide fastener of side.Its result is, can carry out all making by sewing machine, significantly eliminated the problem in the past that the difference because of technical ability causes, and also further improved production efficiency.

This hidden slide fastener for example as described in the special public clear 50-25855 communique (patent documentation 1), at the lower wing plate of pull head trunk and the lateral margin of pull head glide direction quadrature, is erect pair of right and left first flange that setting has the word of falling L cross section along each lateral margin.This a pair of first flange has to be overlooked parallel line part and continues the mode bending of one side to be separated from each other, the extension part that the one side expansion is opened with this line part.In the end that side is opened in the expansion of above-mentioned lower wing plate, vertically erect the guide post that the horizontal cross-section with substantially elliptical is set upward.At this integrally formed second flange above guide post, simultaneously, be integrally formed in the handle erection column of the door type that glide direction extends above second flange at this.On this handle erection column, handle freely is installed in the rotation of the front and back of glide direction.Second flange is by the side face that surrounds above-mentioned guide post, and extension is arranged on the essentially rectangular shape board in the outside, and continue with this rectangular-shaped board, the board that extends the wedge-like that the front end that is provided with forms shrilly between the above-mentioned line part of above-mentioned first flange constitutes., guide post side open-ended is called shoulder mouthful here, opening that will an opposite side with guide post is called deutostoma.

The space that is formed by above-mentioned first flange and above-mentioned guide post and second flange becomes the path of navigation of engagement chain denture, and the gap that forms between first flange and second flange becomes the guide clearance of zipper strip.On the other hand, the pull head with this formation is inserted logical fastener stringer, is the inboard with the engagement head, by making etc., respectively along the opposite side edges of two a pair of zipper strips, a plurality of engagement chain teeth is installed.Each chain tooth of resulting so a pair of fastener stringer is installed edge portion outstanding laterally mode of engagement head with engagement chain tooth, edge portion is installed along this chain tooth, U word shape warpage, by thermosetting etc., its warpage shape is fixed.Make a pair of fastener stringer identical towards the engagement head of chain tooth, simultaneously, the part of turning back of zipper strip is extended laterally from the cotton yarn tape guide clearance between above-mentioned first and second flange, insert logical pull head from the shoulder mouth of above-mentioned pull head with such structure.

Patent documentation 1: Japanese Patent Publication 50-25855 communique

Have in the resulting hidden slide fastener in the past of pull head of above formation in slotting leading to, particularly be applied to the seat cover of the seat of attending a banquet of automobile as described above etc., during at last with this hidden slide fastener locking, because seat cover forms forr a short time than the appearance and size of cushion body, so powerful lateral pull is applied near the fastener stringer of pull head.This powerful lateral pull is in hidden slide fastener as described above, because distinctive structure is holded up engagement chain denture.Particularly on pull head in the past, to the left and right side, extending second flange roughly the same with the first flange wall thickness from the end face of the shoulder oral-lateral of guide post.

Near the shoulder mouth of this second flange part, one side is born lateral pull, and one side is holded up to shoulder mouthful each the chain tooth that imports, and is approximate right angle until the cotton yarn tape face with respect to zipper strip.To the linking part of each chain tooth be positioned in pull head lower wing plate above till, this chain tooth is imported into the chain tooth path of navigation of pull head earlier, be subjected to becoming the power of toppling over that the previous chain tooth of toppling over posture is produced, with influence based on the relative tightening force of the zipper strip T of the slide of pull head owing to first flange, guide post and with contacting of the upper board part of second flange.Therefore, though the linking part of each chain tooth is toppled over when mounting is above the lower wing plate of pull head slightly, because toppling over, it lacks, so the linking part of chain tooth tends to be sandwiched between above-mentioned first flange and second flange, can not carry out the slip of pull head.,, then not only can produce the damage of the chain tooth that lateral pull causes here if pull head is slided, and, make the warpage edge fracture of zipper strip possibly.

The present invention produces in order to solve such problem in the past, specifically, its purpose is, a kind of pull head of hidden slide fastener is provided, the pull head of this hidden slide fastener for example be applied to the to attend a banquet seat cover of seat etc., when the locking slide fastener,, also can carry out the slide of slick and sly pull head even applied powerful lateral pull.

Summary of the invention

Above-mentioned purpose is to realize effectively by following slider for hidden slide fastener, this slider for hidden slide fastener is as main composition of the present invention, relative side edge part is bent is fixed into U word shape, be installed with along the outer surface of the warpage ora terminalis of this side edge part a plurality of engagement chain teeth a pair of fastener stringer respectively mesh the pull head that hidden slide fastener that the engaging of chain tooth throws off is used, it is characterized in that, this pull head has lower wing plate, the guide post and second flange, described lower wing plate have along erectting a pair of first flange that is made of the shaped sections of falling L that is provided with the left and right sides side edge part of the glide direction quadrature of this pull head; Described guide post is straightened an end central portion of the glide direction that is arranged on this lower wing plate; Described second flange is configured between the upper board part of above-mentioned a pair of first flange, and the wedge-like board that has the top rectangular-shaped board that is integrally formed at above-mentioned guide post and begin from this rectangular-shaped board to extend in glide direction, and stretch out laterally along the periphery of above-mentioned guide post, at the side face of above-mentioned second flange, with run through about above-mentioned first flange about the exterior lateral area of the side of guide post at least of the part that intersects of the straight line L of guide post side end face of above-mentioned upper board part, the conical surface that formation begins to expand out upward from the lower end, the upper end crest line portion of the above-mentioned conical surface sets top low than the above-mentioned upper board part of above-mentioned first flange for, and, than the height height between the top and above-mentioned upper board part of lower wing plate following.

According to suitable embodiment, in the upper end of above-mentioned conical surface crest line portion, be configured to the height minimum between the upper end crest line portion of second flange portion of wedge-like panel part side of above-mentioned straight line L and above-mentioned lower wing plate top, in the upper end crest line portion to the above-mentioned conical surface of the end face of an opposite side with the wedge-like panel part side of above-mentioned straight line L, and the height between lower wing plate top is cumulative interimly.In addition, suitable is that the above-mentioned conical surface has the cone angle that changes at the Zhou Fangxiang of second flange multistagely, is configured near the cone angle maximum of the above-mentioned straight line L of this second flange, the end from this straight line L to the guide post side, and cone angle reduces gradually.Having, can be the top in the same plane of the top of above-mentioned first flange and second flange again, compares with above-mentioned straight line L at least, is configured in the below of comparing below with above-mentioned first flange below above-mentioned second flange of wedge-like panel part side.Can also be that above-mentioned each multistage cone angle interim ground in 0 °-90 ° scope changes successively.

Also exist the cotton yarn tape path of navigation that between the upper board part of above-mentioned first flange and above-mentioned second flange, forms Y word shape, it is poor across ladder to be divided into by the long limit extended line of the rectangular-shaped board of above-mentioned second flange below the edge portion of first flange inner part of internal and external parts, is formed to such an extent that to compare wall below Outboard Sections thin.

The invention effect

As mentioned above, having in the pull head that hidden slide fastener is used is formed on the rectangular-shaped board above the guide post of guide post side (shoulder oral-lateral) and begins second flange of the wedge-like board that glide direction is extended from this rectangular-shaped board, with run through begin to hold up from about the lower wing plate have the word of falling L cross section about above-mentioned first flange about the exterior lateral area of takeing on oral-lateral at least of the part that intersects of the straight line L of guide post side end face of above-mentioned upper board part, form the conical surface that from the lower end to the top, expands out.The upper end crest line portion of this conical surface sets top low than the above-mentioned upper board part of above-mentioned first flange for, and, than the height height between the top and above-mentioned upper board part of lower wing plate following.Therefore, in the hidden slide fastener on being installed on the seat cover that covers the seat of attending a banquet of automobile etc. for example, when wanting this slide fastener of locking, because extremely strong lateral pull acts on zipper strip, so, from shoulder mouthful to by lower wing plate, guide post, the engagement chain tooth that first flange and the formed chain tooth of second flange path of navigation are imported into successively becomes in the position of leaving the shoulder mouth, posture with respect to the cotton yarn tape face almost parallel of zipper strip, but, along with near shoulder mouthful, the linking part of chain tooth is last, and the engagement head is for down, under the opposite state of chain tooth installation portion, become the posture of holding up with respect to cotton yarn tape face right angle.

In pull head in the past, near the shoulder mouth end of second flange and the deutostoma side end below it and the size between the lower wing plate do not change.Therefore, though the chain tooth that is positioned on the lower wing plate of takeing on oral-lateral is subjected to entering into the tightening force of interior chain tooth of chain tooth path and cotton yarn tape and the influence of the power that makes it to topple in advance, topple over slightly, but, under the state of not toppling over fully, one side is disturbed with second flange, one side continues to carry out the importing to second flange, under the state of holding up to the part of shoulder mouth, from the linking part of chain tooth to the gap between the upper board part that is sandwiched first flange the foot and second flange, stoped the motion of pull head, this situation is a lot.

Relative therewith, based on pull head of the present invention as mentioned above, because will must be highly higher than this of deutostoma with respect to the height setting of the upper end crest line portion of the conical surface of the shoulder oral-lateral of second flange of lower wing plate, so, even the chain tooth is positioned on the lower wing plate to topple over posture slightly, can not disturb second flange yet,, be imported into chain tooth path of navigation by the guiding of the conical surface of second flange.During this importing, be subjected to the guiding of the conical surface and in advance chain tooth and zipper strip tightening force produced wants to make the combined influence of the power that the chain tooth topples over, chain tooth linking part gradually to want potential second flange below posture tilt.In case the chain tooth that is imported in the chain tooth path of navigation has guaranteed to topple over posture by the upper board part and second flange of lower wing plate, relatively enters sleekly in the chain tooth path of navigation of pull head.Therefore, do not exist as in the past, upper board part that the engagement head of chain tooth, foot are sandwiched in lower wing plate and the situation between second flange, prevented the generation of the breakage of chain tooth, the fracture of zipper strip etc., the slide of the slyness by pull head can unhinderedly make the hidden slide fastener locking.

In addition, have again, the upper end crest line portion of the above-mentioned conical surface is configured to, height minimum between the upper end crest line portion of second flange portion of the wedge-like panel part side of above-mentioned straight line L and above-mentioned lower wing plate top, above-mentioned straight line L is configured to the upper end crest line portion of the above-mentioned conical surface of the end face of an opposite side with the wedge-like panel part side, and the height between lower wing plate top is cumulative interimly.In addition, suitable is that the above-mentioned conical surface has the cone angle that changes at the Zhou Fangxiang of second flange multistagely, is configured near the cone angle maximum of the above-mentioned straight line L of this second flange, the end from this straight line L to the guide post side, and cone angle reduces gradually.According to this formation, as mentioned above, imported to the chain tooth in the chain tooth path of navigation of pull head sleekly, its engagement head is by the guiding of the above-mentioned conical surface of second flange, in the way of deutostoma, be directed to interimly second flange the wedge-like board below, become engagement posture near level, behind the front end of the wedge-like board that just surmounts second flange, mesh fully with the other side's chain tooth, guided towards deutostoma.

At this moment, if at grade with the top configuration of the top of first flange and second flange, simultaneously, with the below of comparing below that is configured in below relative with the upper board part of the above-mentioned first flange at least zone of above-mentioned second flange with above-mentioned first flange, simultaneously, make the cross spider of its conical surface from the plane below the upper board part that includes above-mentioned first flange, below form, then the posture of toppling over of the chain tooth that relatively moves at chain tooth path of navigation is kept with being stabilized, and is slick and sly and conscientiously with the other side's of joining engagement.

If make the above-mentioned cone angle that changes interimly cumulative successively to the end of back oral-lateral multistagely 0 °-90 ° scope from the end of shoulder oral-lateral, then be imported into the chain tooth of path of navigation from the shoulder mouth, the engagement head one side and the conical surface sliding-contact of its chain tooth, the posture change that one side is toppled over to the earth gradually successively from vertical-position, one side is realized slick and sly and practical engagement by the deutostoma that leads sleekly.Being formed at the conical surface on the side face of second flange and the moulding of pull head forms simultaneously.For its moulding easily, and the upper board part of first flange is divided into internal and external parts with the long limit extended line of the rectangular-shaped board of above-mentioned second flange, the following of the medial region of the upper board part that this is divided forms poorly across ladder, and be thinner than the lower wall of exterior lateral area.

Description of drawings

Fig. 1 is a stereogram of seeing the pull head that the hidden slide fastener of the relevant first embodiment of the present invention is used from the oblique upper of shoulder oral-lateral.

Fig. 2 is the part of this pull head of excision, the partial perspective view of seeing from the oblique below of shoulder oral-lateral.

Fig. 3 is a front view of seeing the major part of this pull head from the back oral-lateral.

The stereogram of seeing from the shoulder oral-lateral of the face shaping of second flange when Fig. 4 is pattern ground expression with the handle erection column excision of this pull head.

Fig. 5 is the cutaway view to apparent direction along the V-V line of Fig. 4.

Fig. 6 is the cutaway view to apparent direction along the VI-VI line of Fig. 4.

Fig. 7 is the cutaway view to apparent direction along the VII-VII line of Fig. 4.

Fig. 8 amplifies the horizontal cross that the chain tooth guide surface from lower wing plate of a part of half one of this pull head of expression is seen.

Fig. 9 is the key diagram of action of seeing the engagement chain tooth of this pull head from the chain tooth guide surface of lower wing plate.

Figure 10 is the key diagram of action of the engagement chain tooth when the shoulder oral-lateral is seen of a part that amplifies half one of this pull head of expression.

Figure 11 is the sectional elevation of state of half one of the slide fastener of this pull head of expression when being imported in the chain tooth path.

Figure 12 is the partial perspective view of major part of seeing the slider for hidden slide fastener of the relevant second embodiment of the present invention from the oblique upper of shoulder oral-lateral.

Figure 13 is the partial perspective view of major part of seeing the slider for hidden slide fastener of the relevant third embodiment of the present invention from the oblique upper of shoulder oral-lateral.

Symbol description

100 pull heads

101 lower wing plates

The 101a platform part

102, about 103 first flange

102a, 103a upper board part

102b, 103b sidewall sections

102c, 103c end difference

102d, 103d thinner wall section

104 guide posts

105 second flanges

The rectangular-shaped board of 105a

105b wedge-like board

The 105c conical surface

105c-1-105c-5 first-Di five conical surfaces

106 handle erection columns

107 handles

The 107a annulus

The T zipper strip

The FS fastener stringer

E engagement chain tooth

EH meshes head

The D gap

L links the straight line of the front end face of left and right sides upper board part

α 1-α 5 first-Di five cone angles

The T1-T5 wall thickness

The H1-H5 height

The upper end crest line portion of the Eg conical surface

GP chain tooth path of navigation

GS chain tooth guide surface

The PE parallel zone

The specific embodiment

Below, in accordance with the embodiments illustrated, specify the embodiment of representative of the present invention.

Fig. 1-Fig. 4 represents the first embodiment of the present invention.Fig. 1 is a stereogram of seeing the pull head that the hidden slide fastener of relevant this embodiment is used from the oblique upper of shoulder oral-lateral.In the pull head 100 of present embodiment, with identical in the past, have lower wing plate 101, guide post 104, second flange 105, the handle erection column 106 of door type, handle 107, the lateral margin that described lower wing plate 101 has about the edge is erect first flange 102,103 in the word of the falling L cross section that is provided with; Described guide post 104 is straightened the shoulder oral-lateral end that is arranged on this lower wing plate 101 with above-mentioned first flange 102,103 equidirectionally, and the horizontal cross-section is the substantially elliptical shape; Described second flange 105 extends laterally from the side face of this guide post 104, be formed on this guide post 104 above; The handle erection column 106 of described door type is in this glide direction extension along pull head 100 above second flange 105; Described handle 107 is by the annulus 107a of an end, and rotation freely is supported on the above-mentioned handle erection column 106.

Above-mentioned lower wing plate 101 is after roughly shoulder oral-lateral half one from shoulder mouthful ora terminalis along guide post 104 enlarges width gradually, along back oral-lateral half one of above-mentioned guide post 104 reduced width gradually, near the deutostoma side that has surmounted this guide post,, be same width to the deutostoma ora terminalis.At the left and right sides lateral margin of lower wing plate 101, erect along the glide direction of pull head 100 first flange 102,103 is set with this shape.This first flange 102,103 has the shape of minute surface symmetry, constitute by the parts of cross section for the word of falling L shape, thereafter left and right sides wall part 102b, the 103b of oral-lateral become parallel zone PE, and the parts of the described word of falling L shape are made of upper board part 102a, 103a and sidewall sections 102b, 103b.Sidewall sections 102b, 103b about above-mentioned makes the zone disappearance corresponding with the shoulder oral-lateral end of above-mentioned upper board part 102a, 103a.

In addition, in the present embodiment, have from back oral-lateral half one of above-mentioned guide post 104 to the platform part 101a on the outstanding wedge-like plane of deutostoma be formed on lower wing plate 101 above.Above-mentioned second flange, 105 integral body are tabular, has the rectangular-shaped board 105a that forms along the side face of the shoulder oral-lateral ora terminalis of above-mentioned guide post 104 and left and right sides lateral margin, and continue with above-mentioned rectangular-shaped board 105a, sharp-pointed front end is extended integratedly the wedge-like board 105b of setting towards deutostoma from the deutostoma side edge of guide post 104.

Has the chain tooth path of navigation GP that is formed with Y word shape between the neighboring area of top above-mentioned platform part 101a pull head 100, that be formed on above-mentioned lower wing plate 101 of relevant present embodiment of such formation and guide post 104 and first flange 102,103 and second flange 105.According to illustrated example, be in the same plane above top and second flange 105 of above-mentioned first flange 102,103 of pair of right and left.On the other hand, following and second flange 105 of each upper board part 102a, 103a of first flange 102,103 following not at grade, compare below following and second flange 105 of each upper board part 102a, 103a of first flange 102,103 and be positioned at the top.In other words, the wall thickness of each upper board part 102a, 103a of first flange 102,103 forms than the wall thickness of second flange 105.In addition, between all sides of the inner side surface of each upper board part 102a, 103a of above-mentioned first flange 102,103 of pair of right and left and above-mentioned second flange 105, has the clearance D that to insert the logical not shown zipper strip that goes out.

In the slider for hidden slide fastener 100 of present embodiment, also has the formation of tool feature of the present invention with this basic comprising.That is, the circumference of above-mentioned second flange 105 has formation different from the past.To this, one side is with reference to Fig. 4 and Fig. 5, and one side describes particularly.Fig. 4 is a stereogram of seeing second flange 105 when having got rid of handle erection column 106 from oblique upper.In addition, Fig. 5, Fig. 6 and Fig. 7 be respectively along Fig. 4 V-V line, VI-VI line, VII-VII line to looking cutaway view.

According to Fig. 4, if the shape of the integral body of second flange 105 is described simply, then second flange 105 as mentioned above, when overlooking, the upper part of guide post 104 by have rectangular-shaped board 105a and from this rectangular-shaped board 105a backward the sheet material of the wedge-like board 105b that extends of oral-lateral constitute.In its all side, as shown in Figure 4, form just from the shoulder mouth of guide post 104 and hold the conical surface 105c that has changed cone angle to 5 stage ground of deutostoma side.But shape, the cone angle of the conical surface 105c of the present embodiment of setting forth below are not limited to this example, can carry out various changes according to the specification of hidden slide fastener.Conical surface 105c among the present invention low position on than second flange 105 has the upper end crest line Eg of portion, and is downward-sloping towards the side face and the platform part 101a of all guide posts 104.

According to this figure, the part of holding roughly half one than guide post 104 to lack from the shoulder mouth of guide post 104, height H 1 between the above-mentioned upper end Eg of crest line portion of above-mentioned conical surface 105c and lower wing plate 101 top is for the highest, and, become first conical surface 105c-1 as the thinnest wall T1 of thickness of flange.The second distolateral cone angle 2 of the deutostoma of second flange 105 that continues with this first conical surface 105c-1 is holded up gradually since first cone angle 1, has again, and the distolateral third hand tap angle α 3 of the deutostoma of following (omits diagram.) hold up gradually since second cone angle 2, this repeatedly situation, the 5th cone angle 5 that constitutes the leading section of wedge-like board 105b (is omitted diagram.)。The 5 basic not inclinations of the 5th cone angle are near 90 °.In addition, simultaneously, (T3, T5 omit diagram to the wall thickness T 1-T5 of the above-mentioned conical surface 105c and second flange 105.) also correspondingly increase successively with the variation of cone angle.But in the present embodiment, the 4th and the 5th wall thickness T 4, T5 of second flange 105 are identical thickness.Therefore, (H3, H5 omit diagram to the height H 1-H5 between the above-mentioned upper end Eg of crest line portion of conical surface 105c and lower wing plate 101 top.) (=H5) relation reduces successively with H1＞H2＞H3＞H4.

Here, in the present embodiment, second flange 105 that the shoulder mouth of comparing with the straight line L that respectively takes on the oral-lateral end face (Fig. 1 and Fig. 4) of upper board part 102a, 103a of first flange 102,103 about linking is distolateral look like Fig. 4-shown in Figure 6 week, along with convergence first-Di four conical surface 105c-1-105c-4, cone angle and wall thickness T are increased equally by the mode of first-Di, four cone angle 1-α 4.But also there is situation about getting final product on the side face be formed on the second distolateral flange 1 05 of the shoulder mouth compared with above-mentioned straight line L (Fig. 1 and Fig. 4) in above-mentioned conical surface 105c as described later.

If second flange 105 to present embodiment is described more specifically, though then half one of the side face of second flange 105 from shoulder oral-lateral end to rectangular-shaped board 105a is the thinnest roughly the same wall thickness T 1, but, increase gradually near the mode of the wall thickness deutostoma side end of later guide post 104 according to T2-T3, simultaneously, the cone angle 1-α 3 that has a down dip that always is formed into till second flange 105 following increases also interimly.This situation also can be understood from Fig. 5-Fig. 7 equally, and the height H 1-H3 of expression from the chain tooth guide surface GS of lower wing plate 101 to the above-mentioned upper end Eg of crest line portion of the conical surface 105c-1-105c-3 of the shoulder mouth end side of second flange 105 is than near height H 4, the H5 height above the lower wing plate 101 of the wedge-like board 105b deutostoma side of guide post 104.In addition, in the present embodiment,, simultaneously, make its cone angle 1 littler, and form conical surface 105c than other cone angle 2 and α 3 though the wall thickness T 1 of the shoulder oral-lateral end of second flange 105 is approached,, also can get rid of this cone angle 1.That is, cone angle 1 can be 0 °.

By resembling the side face shape that forms second flange 105 above-mentioned, even as in the past, when the pull head operation of the locking that is used for hidden slide fastener, zipper strip is applied the lateral pull of extra-heavy power, chain tooth E can not sandwiched each upper board part 102a, 103a of first flange 102,103 and the clearance D between second flange 105 yet, and the slide pull head 100 sleekly.According to Fig. 8 and Fig. 9, this is elaborated.

Fig. 9 is the cutaway view when the chain tooth guide surface of lower wing plate 101 is seen second flange 105, and Figure 10 is expression and the first flange 102 engagement chain tooth E1 nearby of pull head 100 is directed to the key diagram of variation of vertical-position of the chain tooth E2 of chain tooth path of navigation GP in advance.From these figure, be appreciated that, the left and right sides fastener stringer FS in shoulder oral-lateral the place ahead of pull head 100 is owing to be in the state of opening greatly at the lateral pull of the brute force of zipper strip, at this moment, engagement chain tooth E makes engagement head EH towards the top (side nearby of Fig. 9), with respect to the cotton yarn tape face of zipper strip, hold up with the posture of approximate right angle.

The slide of the locking direction (top of Fig. 9) by pull head 100, continuous chain tooth E are positioned on the chain tooth guide surface GS of lower wing plate 101 of pull head 100 successively.At this moment, still be applied in powerful lateral pull though be positioned in chain tooth E1 on the chain tooth guide surface GS,, the chain tooth E2 of chain tooth path of navigation GP that in advance is directed to pull head 100 is because first and second flange 102,103; 105, it topples over posture is forced, and therefore, also acts on zipper strip with the power of lateral pull antagonism, compares with the chain tooth E that shoulder mouth from pull head 100 leaves, and wants the earth to topple over.Here, as in the past pull head, the wall thickness of second flange from the shoulder side under the oral-lateral identical situation of back, low from the height of chain tooth guide surface below second flange of lower wing plate, at toppling in the posture of the above-mentioned chain tooth E1 that wants to topple over, its engagement head EH disturbs second flange, and engagement head EH is not under by the state that guides below second flange, enter into the gap of first flange and second flange, clamped.

This point, if pull head 100 based on present embodiment, because the following cut thin-walled that forms of the shoulder oral-lateral end of second flange 105, so, the engagement head EH of the above-mentioned chain tooth E1 that topples over slightly is in the slip of pull head 100, be directed to second flange below, imported chain tooth path of navigation GP sleekly.Figure 11 is the sectional elevation of shoulder oral-lateral end face of the upper board part that passes first flange of expression moment of being imported into chain tooth path of navigation GP.As shown in the drawing, if from relative with first flange 102, the 103 at least zone of second flange 105 below the face of wedge-like board 105b, form the cone angle 3 with relation as described above, the conical surface 105c of α 4 interimly, the chain tooth E that then is imported into chain tooth path of navigation GP can one side be guided on its conical surface 105c sleekly, one side is effectively to the posture conversion of toppling over of meshing necessary hope, finally, be directed to second flange 105 wedge-like board 105b below, therefore fine.In Figure 11, symbol T represents zipper strip.

In addition, in the present embodiment, as Fig. 3 and shown in Figure 8, on the parallel zone PE of upper board part 102a, the 103a of first flange 102,103, form following thinner wall section 102d, the 103d of the side edge part that it is relative by end difference 102c, the excision of 103c linearity.Above-mentioned thinner wall section 102d, 103d are equivalent to as shown in Figure 8 along each extended line of the left and right sides lateral margin of the rectangular-shaped board 105a of second flange 105, the medial region in upper board part 102a, the 103a two of first flange 102,103 is divided into during exterior domain.This thinner wall section 102d, 103d are the interference that is used to avoid the not shown insertion mould that goes out with for the necessary pull head moulding of the conical surface 105c of the side face that forms above-mentioned second flange 105 time.

Figure 12 is that part is excised the stereogram that the oblique upper from the shoulder oral-lateral that pull head that the hidden slide fastener of the relevant second embodiment of the present invention uses represents is seen.In this embodiment, this end face that the shoulder oral-lateral end face of second flange 105 is formed with guide post 104 is a flush, simultaneously, along the side face of second flange 105 that removes this end face, forms the conical surface 105c of same cone angle continuously, and this point is different with first embodiment.Other formation and above-mentioned first embodiment do not change in fact.Therefore, in this embodiment, to not having the different identical symbol of parts mark of essence with first embodiment.By this second embodiment, also can expect identical action effect with above-mentioned first embodiment.In addition, in this embodiment, also can make in the way of above-mentioned conical surface 105c till the above-mentioned straight line L and end, till the front end of continuous wedge-like board 105b, not form conical surface 105c.

Figure 13 is that part is excised the stereogram that the oblique upper from the shoulder oral-lateral that pull head that the hidden slide fastener of the relevant third embodiment of the present invention uses represents is seen.In this embodiment, wall thickness till the position of straight line L from the shoulder oral-lateral end face of second flange 105 to the guide post side end face that links upper board part 102a, 103a is increased gradually, simultaneously, continue by this wall thickness, make the wall thickness of the above-mentioned shoulder oral-lateral of wall ratio till the front end of wedge-like board 105b thick.Have, in the side of its thinner wall section, it is cumulative to form cone angle 1, becomes the continuous conical surface 105c of cone angle 3 again, simultaneously, forms the conical surface 105c with continuous above-mentioned cone angle 3 till the front end from this thinner wall section to wedge-like board 105b.Because in this embodiment, also be from the above-mentioned straight line L of second flange 105 to the guide post side end face till, be formed on the conical surface of little cone angle 1-α 3, simultaneously, make the chain tooth guide surface GS of lower wing plate 101 higher than other zone to the following height H of first flange 102,103 (second flange 105) of shoulder oral-lateral end face side, so, also can expect identical action effect with above-mentioned first embodiment.

Claims (6)

1. slider for hidden slide fastener, be relative side edge part to be bent be fixed into U word shape, be installed with along the outer surface of the warpage ora terminalis of this side edge part a plurality of engagement chain teeth a pair of fastener stringer (FS) respectively mesh the pull head (100) that hidden slide fastener that chain tooth (E) engaging throws off is used, it is characterized in that

This pull head (100) has lower wing plate (101), guide post (104) and second flange (105), and described lower wing plate (101) has along erectting a pair of first flange (102,103) that is made of the shaped sections of falling L that is provided with the left and right sides side edge part of the glide direction quadrature of this pull head (100); Described guide post (104) is straightened an end central portion of the glide direction that is arranged on this lower wing plate (101); Described second flange (105) is configured between the upper board part (102a, 103a) of above-mentioned a pair of first flange (102,103), and the wedge-like board (105b) that has the top rectangular-shaped board (105a) that is integrally formed at above-mentioned guide post (104) and extend in glide direction from this rectangular-shaped board (105a) beginning, and stretch out laterally along the periphery of above-mentioned guide post (104)

The side face of above-mentioned second flange (105), with run through about above-mentioned first flange (102,103) about the exterior lateral area of guide post at least (104) side of the part that intersects of the straight line L of guide post side end face of above-mentioned upper board part (102a, 103a), the conical surface that formation begins to expand out upward from the lower end (105c)

The upper end crest line portion (Eg) of the above-mentioned conical surface (105c) sets top low than the above-mentioned upper board part (102a, 103a) of above-mentioned first flange (102,103) for, and, than height (H) height between the top and above-mentioned upper board part (102a, 103a) of lower wing plate (101) following.

2. slider for hidden slide fastener as claimed in claim 1, it is characterized in that, in the upper end of the above-mentioned conical surface (105c) crest line portion (Eg), height (H5) minimum between the upper end crest line portion (Eg) of second flange portion of wedge-like board (105b) side of above-mentioned straight line L and above-mentioned lower wing plate (101) top

Above-mentioned straight line L to the upper end crest line portion (Eg) of the above-mentioned conical surface (105c) of the end face of the opposite side of wedge-like board (105b) side, and the height (H5-H1) between lower wing plate (101) top is cumulative interimly.

3. slider for hidden slide fastener as claimed in claim 1 or 2, it is characterized in that, the above-mentioned conical surface (105c) has the cone angle (α 1-α 5) that changes at the Zhou Fangxiang of second flange (105) multistagely, be configured near cone angle (α 4) maximum of the above-mentioned straight line L of this second flange (105), end from this straight line L to the guide post side, cone angle (α 3, α 2, α 1) reduces gradually.

4. slider for hidden slide fastener as claimed in claim 1, it is characterized in that, top and second flange (105) of above-mentioned first flange (102,103) top in the same plane, at least compare with above-mentioned straight line L, be configured in the below of comparing below below above-mentioned second flange (105) of wedge-like board (105b) side with above-mentioned first flange (102,103).

5. slider for hidden slide fastener as claimed in claim 3 is characterized in that, above-mentioned multistage each cone angle (α 1-α 5) interim ground in 0 °-90 ° scope changes successively.

6. slider for hidden slide fastener as claimed in claim 1, it is characterized in that, between the upper board part (102a, 103a) of above-mentioned first flange (102,103) and above-mentioned second flange (105), form the cotton yarn tape path of navigation (GP) of Y word shape, it is poor across ladder to be divided into by the long limit extended line of the rectangular-shaped board (105a) of above-mentioned second flange (105) below the edge portion of inside part of first flange (102,103) of internal and external parts, is formed to such an extent that to compare wall below Outboard Sections thin.

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