KR20170023446A - Slide fastener and preparation method thereof - Google Patents

Slide fastener and preparation method thereof Download PDF

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Publication number
KR20170023446A
KR20170023446A KR1020150118579A KR20150118579A KR20170023446A KR 20170023446 A KR20170023446 A KR 20170023446A KR 1020150118579 A KR1020150118579 A KR 1020150118579A KR 20150118579 A KR20150118579 A KR 20150118579A KR 20170023446 A KR20170023446 A KR 20170023446A
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KR
South Korea
Prior art keywords
head
inclined surface
slide fastener
crest
curved
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Application number
KR1020150118579A
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Korean (ko)
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KR101740302B1 (en
Inventor
염상민
Original Assignee
케이피피지퍼 주식회사
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Priority to KR1020150118579A priority Critical patent/KR101740302B1/en
Publication of KR20170023446A publication Critical patent/KR20170023446A/en
Application granted granted Critical
Publication of KR101740302B1 publication Critical patent/KR101740302B1/en

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    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/24—Details
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/42—Making by processes not fully provided for in one other class, e.g. B21D53/50, B21F45/18, B22D17/16, B29D5/00

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  • Slide Fasteners (AREA)

Abstract

The present invention relates to a slide fastener in which an element having a head portion and a pair of opposed leg portions connected to the head portion is intermittently fastened to a tape at a predetermined pitch, the head portion including a protruding protrusion and a protrusion having a shape corresponding to the protrusion The head including a concave pocket, the head having a first inclined surface inclined from the tip toward the crest; A curved portion formed between the first inclined surface and the crest portion; A flat crest extending from the curved portion; And a second inclined surface inclined downwardly from the hill portion toward the leg portion and inserted into the pocket and hooked to the pocket. The slide fastener according to the present invention is manufactured from a deformed wire material not a flat wire material , The surface is smooth, the opening and closing operation of the fastener is smoothly performed, and the advantage of excellent physical properties such as lateral tear strength is provided.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a slide fastener,

The present invention relates to a slide fastener and a method of manufacturing the same, and more particularly, to a slide fastener in which an element is made of a deformed wire and has a smooth surface and excellent physical properties such as strength and sliding property, and a method of manufacturing the slide fastener.

The conventional slide fastener chain is mainly manufactured by using a flat wire material as shown in Fig. The slide fastener chain progressively advances the flat wire material by a predetermined length, forms an acid and a pocket by a forming punch and a forming die, cuts teeth by a die part made of a piece metal mold and a cutting punch, Has been produced by the method.

In the conventional slide fastener chain manufactured by using the flat wire material, scratches due to the tolerance between the molds are generated in the course of gradually forming the flat wire material in the mold and forming it into a tooth shape. In order to obtain a more beautiful effect on the surface of the teeth of the slide fastener chain as the demand of the consumer increases, the slide fastener chain using the flat wire material is subjected to a polishing treatment to remove scratches or scratches, . If the abrasion treatment is performed a lot, the surface can be made beautiful but the thickness of the legs of the teeth is thinned, which causes a problem that the strength of the slide fastener chain is lowered.

In the slide fastener chain using the flat wire rod, the flat wire rod is cut and formed into the element shape by the cutting die and the punch, so that a fracture occurs due to the tolerance of the die. Since the roughness of the fracture surface is not constant depending on the degree of tolerance between the molds, the surface roughness of the surface must be different depending on the condition of the fracture surface. As a result, a deviation occurs in the thickness of the cord bite of the leg portion, resulting in a variation in strength. Thus, there is a limit in that it is difficult to manufacture a slide fastener having a surface that is smooth even when plating is performed because the surface roughness is uneven.

SUMMARY OF THE INVENTION It is an object of the present invention to overcome the limitations of the prior art described above, and it is an object of the present invention to provide a slide fastener chain which can stably form a slide fastener chain, To provide a slide fastener capable of improving physical properties and quality, and a method of manufacturing the slide fastener.

Another object of the present invention is to provide a slide fastener which is excellent in opening and closing performance and can prevent abrasion or breakage of a mold part to reduce manufacturing cost by drastically reducing consumption cost and a manufacturing method thereof .

According to one aspect of the present invention, there is provided a slide fastener in which an element having a head portion and a pair of opposed leg portions connected to the head portion is intermittently fastened to the tape at a predetermined pitch, And a concave pocket having a shape corresponding to the protruding portion, wherein the head portion has a first inclined surface inclined from the tip portion toward the crest portion; A curved portion formed between the first inclined surface and the crest portion; A flat crest extending from the curved portion; And a second inclined surface inclined downward from the hill portion toward the leg portion and inserted into the pocket and hooked to the pawl.

According to another aspect of the present invention for achieving the above object,

A metal wire having a head portion and a pair of opposed leg portions connected to the head portion is cut to a product thickness of an element for manufacturing a slide fastener and then the head portion of the cut element material is formed, In the production of the slide fastener by intermittently fastening the part at a predetermined pitch to the tape,

Wherein the head forming step includes a protruded protrusion and a concave pocket having a shape corresponding to the protrusion, the head including a first inclined surface inclined from a tip portion toward a crest portion; A curved portion formed between the first inclined surface and the crest portion; A flat crest extending from the curved portion; And a second inclined surface which is inclined downward toward the leg portion from the mountain portion and is inserted and hooked into the pocket.

The elements of the slide fastener of the various embodiments of the present invention are made from deformed wire material, not a flat wire material, and have a beautiful surface. In addition, the slide fastener in which such an element is inserted also has a smooth surface, so that the touch feeling is smooth, and the sliding resistance of the slider is reduced, so that the slide fastener can be opened and closed more smoothly.

According to the present invention, since a larger number of combined chain teeth are stably arranged on the inner straight line portion of the slider, the clearance between the chain and the slider is reduced, so that a smooth opening and closing function can be exhibited. As a result, It is possible to reduce the manufacturing cost by minimizing the consumption of the mold parts because it improves the tensile strength and lowers the mountain height to prevent wear or breakage of the mold parts.

1 is a schematic perspective view of a deformed wire rod for forming an element of a slide fastener according to an embodiment of the present invention.
2 is a schematic perspective view of an element forming a slide fastener according to an embodiment of the present invention.
3 is a front view of an element for forming a slide fastener according to an embodiment of the present invention.
4 is a schematic rear view of an element forming a slide fastener according to an embodiment of the present invention.
5 is a side view of an element forming a slide fastener according to an embodiment of the present invention.
FIG. 6 is a schematic diagram for explaining a distance P between a height h of a peak and a tooth in a slide fastener according to an embodiment of the present invention. FIG.
7 is a partial perspective view showing an attachment state of the element of the present invention to the fastener tape.
8 is a schematic perspective view showing the engagement state of the element.
9 is a schematic perspective view of a flat wire member used in manufacturing an existing slide fastener element.

Various embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In order to clearly illustrate the present invention in the drawings, parts not related to the description are omitted, and like reference numerals are given to similar parts throughout the specification.

2 is a schematic perspective view of an element for forming a slide fastener according to an embodiment of the present invention, and Fig. 3 is a cross-sectional view of the slide fastener shown in Fig. 4 is a rear view of an element for forming a slide fastener according to an embodiment of the present invention. FIG. 4 is a front view of an element forming a slide fastener according to an embodiment of the present invention.

1 to 4, an element 100 of a slide fastener according to the present invention includes a head 110 and an element having a pair of opposing legs 120, In the present invention. The head portion 110 includes a protruding protrusion 111 and a recessed pocket 118 corresponding to the protrusion 111. The head portion 110 is inclined from the tip portion toward the crest 114 A first inclined surface 112; A curved portion 113 formed between the first inclined surface 112 and the crest 114; A flat crest 114 extending from the curved portion 113; And a second inclined surface 115 inclined downward from the crest 114 toward the leg 120 and inserted into the pocket 118 to engage with the crest 114.

4, the elements of the slide fastener of the present invention are formed such that a crest portion 114 is formed on a front surface portion so as to be stitched together and a crest portion 114 is formed on the opposite side of the crest portion 114, And a pair of legs 120 capable of inserting an element into the cord of the tape below the head part 110. The leg part 120 can be inserted into the cord of the tape.

Referring to FIG. 4, the slide fastener of the present invention adjusts the height (h) at which the crest 114 is formed and the interval (pitch) P between the teeth in order to improve and stabilize the opening and closing function and strength. In the conventional metal slide fastener chain, the clearance between the teeth is large, so that the clearance between the teeth is increased, so that the strength is lowered in the transverse tensile strength test. Also, when the chain is opened and closed, There was a touching and rattling feeling.

The slide fastener of the present invention narrows the pitch P between the teeth and lowers the height h of the hill portion so that the curved portion 113 of the hill 114 when the chain is opened and closed abuts against the track 119 of the pocket 118 It feels gentle as it slips and rides. Particularly, the slide fastener of the present invention is characterized in that the portion of the crest 114 which is in contact with the track 119 is formed as a curved portion 113, and the crest 114 has a second inclined surface 115 The head 110 can be more smoothly opened and closed by adjusting the position of the hill 114 including the hill 110. [

Referring to FIG. 5, the size of the head 110 is 21% to 25%: 34% to 38%: 38% to 42% in the ratio of L1: L2: L3 in FIG. 4, <L3, and the inclination angles? 1 and? 2 of the first inclined surface and the second inclined surface are configured to satisfy the conditions of 25 °? 1 <30 ° and 30 °? 2 <35 °.

The curved portion 113 is configured to satisfy 2? R <5 (where r is the radius (mm) of the curved surface constituting the curved portion).

6, in the slide fastener of the present invention, the pitch h between the height of the hill portion and the elements fastened to the tape cord is P-T1 <h (where P is the pitch between the elements of the slide fastener , H is the height of the peak, and T1 is the thickness of the leg). The pitch P between the elements is determined by the leg thickness T 1 to 250%.

Since a larger number of combined chain teeth are stably arranged in the slider inner straight line portion 116, the clearance between the chain and the slider is reduced, and a smooth opening / closing function can be achieved. Since the spacing between the teeth is small, the transverse tensile strength can be maintained above a certain level, which is difficult to attain before the height of the crests is reduced considerably. In this way, the height (h) of the crest portion is reduced to prevent the wear or breakage of the mold parts, thereby minimizing the consumption of the mold parts and reducing the production cost.

Another aspect of the present invention relates to a method of manufacturing a slide fastener using a deformed wire. The slide fastener chain using the deformed wire rod 1 is obtained by cutting the deformed wire rod 1 by a predetermined thickness in the longitudinal direction and forming a crest 114 and a pocket 118 by a forming punch and a forming die, The surface of the leg portion 120 maintains the appearance of the deformed wire rod 1 because the element 100 having the crests 114 and the pockets 118 formed therein is inserted into the tape cord 200. [ Therefore, the flatness of the slightly generated bend is increased, and the surface roughness is increased. Therefore, the thickness of the leg portion 120 is not affected, so that there is no variation in strength.

7 and 8, in the method of the present invention, a deformed wire rod having a head portion 110 and a pair of opposed leg portions 120 connected to the head portion 110 and having a substantially Y- After cutting to the thickness of the element of the fastener manufacturing element, a forming step of forming a protrusion 111 and a pocket 118 on the head 110 of the cut element material is performed, Is intermittently fastened to the tape at a predetermined pitch to produce a slide fastener. In the head forming step, the head part 110 includes a protruding part 111 and a recessed pocket 118 corresponding to the protruding part. The head part 110 includes a crest part 114 A first inclined surface 112 inclined with respect to the first inclined surface 112; A curved portion 113 formed between the first inclined surface and the mountain portion; A flat crest 114 extending from the curved portion; And a second inclined surface 115 which is inclined downward from the hill portion toward the leg portion and in which the hill 114 is inserted into the pocket 118 and engaged.

4, the ratio of the length L1: L2: L3 is 21% to 25%: 34% to 38%: 38% to 42%, and L1 <L2 <L3, wherein the inclination angles? 1 and? 2 of the first inclined surface and the second inclined surface satisfy the conditions of 25 °? 1 <30 ° and 30 °? 2 <35 °, r < 5 (where r is the radius (mm) of the curved surface constituting the curved portion).

In the slide fastener manufactured by the method of the present invention, the pitch P between the teeth is narrowed, the height h of the hill is lowered, the portion contacting the track in the shape of the hill is formed into a curved portion, The position of the mountain portion is adjusted upward to reduce the head portion, so that the opening and closing can be smoothly performed when the chain is opened and closed.

It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. You can understand that you can do it. Therefore, the true scope of protection of the present invention should be defined in the appended claims and their equivalents.

1: Metal wire rod
100: element 111:
110: head part 112: first inclined surface
113: Curved portion 114:
115: second inclined surface 118: pocket
116: Inner rectilinear section 119: Track
120: leg

Claims (7)

A slide fastener in which an element having a head part and a pair of opposed leg parts connected to the head part is intermittently fastened to the tape at a predetermined pitch, the head part having a protruding protruding part and a recessed pocket having a shape corresponding to the protruding part Wherein the head portion has a first inclined surface inclined from the leading end toward the mountain portion; A curved portion formed between the first inclined surface and the crest portion; A flat crest extending from the curved portion; And a second inclined surface which is inclined downward toward the leg portion from the mountain portion and is inserted and hooked into the pocket.
The head according to claim 1, wherein the head has a length L1: L2: L3 of 21% to 25%: 34% to 38%: 38% to 42% And the inclination angles? 1 and? 2 of the first inclined surface and the second inclined surface satisfy the conditions of 25 °? 1 <30 ° and 30 °? 2 <35 °.
2. The slice fastener according to claim 1, wherein the curved portion satisfies the condition of 2? R <5 (where r is the radius (mm) of the curved surface constituting the curved portion).
2. The tape fastener according to claim 1, wherein a pitch P between the height h of the hill portion and the elements fastened to the tape cords is P-T1 < h, where P is the pitch between the elements of the slide fastener, And T1 is the thickness of the leg portion).
The slide fastener according to claim 4, wherein a pitch P between the elements is within a range of 220% to 250% of a leg portion thickness T1.
A metal wire having a head portion and a pair of opposed leg portions connected to the head portion is cut to a product thickness of an element for manufacturing a slide fastener and then the head portion of the cut element material is formed, In the production of the slide fastener by intermittently fastening the part at a predetermined pitch to the tape,
Wherein the head forming step includes a protruded protrusion and a concave pocket having a shape corresponding to the protrusion, the head including a first inclined surface inclined from a tip portion toward a crest portion; A curved portion formed between the first inclined surface and the crest portion; A flat crest extending from the curved portion; And forming a second inclined surface inclined downward from the proximal portion toward the leg portion and inserted into the pocket to engage with the proximal portion.
7. The method according to claim 6, wherein the head forming step comprises the steps of: forming a head portion having a length L1: L2: L3 of 21% to 25%: 34% to 38% And the inclination angles? 1 and? 2 of the first inclined surface and the second inclined surface satisfy the conditions of 25 °? 1 <30 ° and 30 °? 2 <35 °, Wherein the curved portion is formed so as to satisfy a condition of 2? R <5 (where r is the radius (mm) of the curved surface constituting the curved portion).
KR1020150118579A 2015-08-24 2015-08-24 Slide fastener and preparation method thereof KR101740302B1 (en)

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Application Number Priority Date Filing Date Title
KR1020150118579A KR101740302B1 (en) 2015-08-24 2015-08-24 Slide fastener and preparation method thereof

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KR20170023446A true KR20170023446A (en) 2017-03-06
KR101740302B1 KR101740302B1 (en) 2017-06-15

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109527722A (en) * 2018-11-21 2019-03-29 浙江伟星实业发展股份有限公司 A kind of chain tooth and the zipper with the chain tooth
CN112273800A (en) * 2020-10-13 2021-01-29 福建浔兴拉链科技股份有限公司 Zipper tooth, zipper, article using zipper and zipper tooth forming die
CN114340440A (en) * 2019-10-10 2022-04-12 Ykk株式会社 Metal fastener element and slide fastener

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3917452B2 (en) * 2002-04-11 2007-05-23 Ｙｋｋ株式会社 Sliding fastener service tooth formed from the same metal wire material
WO2009128136A1 (en) * 2008-04-14 2009-10-22 Ykk株式会社 Metallic one-side teeth and two-way slide fastener

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109527722A (en) * 2018-11-21 2019-03-29 浙江伟星实业发展股份有限公司 A kind of chain tooth and the zipper with the chain tooth
CN114340440A (en) * 2019-10-10 2022-04-12 Ykk株式会社 Metal fastener element and slide fastener
CN112273800A (en) * 2020-10-13 2021-01-29 福建浔兴拉链科技股份有限公司 Zipper tooth, zipper, article using zipper and zipper tooth forming die

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