TWI554225B - Zipper - Google Patents

Description

zipper

The present invention relates to a zipper for engaging and disengaging a zipper chain by means of an upper and lower meshing slider, the zipper chain being fastened to the zipper chain by a continuous chain of teeth.

In the zipper of the slide fastener, the zipper guide passage of the slider has a left and right introduction port, and the like, and the first zipper element row and the second zipper in a separated state are described in the above-mentioned Japanese Patent Publication No. 2010/082291 (Patent Document 1). The sprocket row enters or exits, and has a stepped arrangement in the front-back direction; and the engagement port that discharges or enters the first zipper element row and the second zipper element row in the engaged state; and the first zipper chain The degree of extension of the front side of the tooth row is shorter than the length of the front side of the second fastener element row.

According to the invention described in Patent Document 1, when the left and right fastener element rows are meshed with each other, the first fastener element having a short extension length is arranged from the back side, and the second fastener chain having a long extension length is used. The tooth rows are introduced at different heights from the front side, and the left and right fastener element rows are merged obliquely from the front-back direction and the left-right direction, so that the fastener elements are easily meshed with each other. Further, when the left and right fastener element rows in the engaged state are separated from each other, the fastener element rows are obliquely separated from each other in the front-back direction and the left-right direction, and the fastener elements are easily separated from each other.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] International Publication No. 2010/082291

SUMMARY OF THE INVENTION It is an object of the present invention to provide a zipper in which a continuous chain of teeth is easily engaged and disengaged by means of an up-and-down engagement slider.

A zipper according to an embodiment of the present invention is characterized in that it comprises: a zipper chain, wherein a pair of chain belts are arranged opposite to each other, wherein the pair of chain belts comprise: a pair of zipper chain cloths, etc. a surface having a lower surface on a side opposite to the upper surface; and a chain of teeth comprising a plurality of fasteners fixed to an edge of each of the pair of fastener chains at a specific pitch; and a slider The utility model includes an upper wing plate disposed on the upper surface side, a lower wing plate disposed on the lower surface side, and a front end wall connecting the upper wing plate and the lower wing plate, and having the first wing plate a first inlet port into which the fastener element row is inserted and a second inlet port which is disposed on the lower surface side of the first inlet port and is provided with the height of the first inlet port, and a second inlet port for feeding in and out of the second element row; and a meshing opening for One of the engaged state is in the direction of the above-mentioned fastener element; and the sliding member is freely movable to engage or disengage the respective element rows; and each of the fastener elements has a base portion fixed to the fastener chain cloth; And a head that protrudes from the base and Engaging the sprocket teeth; the head of each of the sprocket teeth having a first head disposed on the upper surface side; and a second head disposed on the lower surface side of the fastener chain; Further, the first head portion is formed to be offset from the first head portion when the respective element rows are engaged with each other to shift the first direction in which the slider moves.

A zipper according to an embodiment of the present invention is characterized in that each of the fastener elements has a neck portion having a smaller width than the base portion and the head portion between the base portion and the head portion, and the neck portion of each of the fastener elements The first neck portion is disposed on the upper surface side, and the second neck portion is disposed on the lower surface side of the fastener chain cloth; The first neck portion is formed by shifting the first direction in which the slider moves when the second neck portion is engaged with the respective element rows.

In the zipper according to the embodiment of the present invention, the sprocket system has a first convex portion formed on the first direction side of the lower surface side of the first head portion, and the first neck portion is a first concave portion is formed on the first surface side of the lower surface side, and a second convex portion is formed on the second surface side opposite to the first direction on the upper surface side of the second head portion, and the second neck portion is formed on the second neck portion. a second concave portion is formed on the second surface side opposite to the first direction on the upper surface side of the portion, and the first convex portion and the opposite sprocket portion of one of the fastener elements are engaged when the pair of the fastener tapes are engaged 2 The concave portion is engaged, and the first concave portion of the fastener element on one side is engaged with the second convex portion of the opposite fastener element.

A slide fastener according to an embodiment of the present invention is characterized in that an offset amount of the first head portion with respect to the second head portion is 0.2 mm or more and 03 mm or less, and an offset amount is relative to the head of the fastener element. The ratio of the dimension of the portion along the first direction is 9% or more and 15% or less.

According to the present invention, it is possible to provide a slide fastener in which a continuous chain element row is easily engaged and separated by an up-and-down engagement slider.

1‧‧‧ zipper

6‧‧‧Sliding parts

10‧‧‧ zipper chain

11‧‧‧1st chain

12‧‧‧2nd chain belt

20‧‧‧Zipper chain cloth

21‧‧‧1st zipper chain cloth

22‧‧‧2nd zipper chain cloth

21a, 22a‧‧‧ upper surface

21b, 22b‧‧‧ lower surface

23‧‧‧Edge

31‧‧‧1st chain tooth row

32‧‧‧2nd chain tooth row

61‧‧‧Upper wing

62‧‧‧lower wing

63‧‧‧1st guiding slot

64‧‧‧1st side wall

65‧‧‧2nd guiding slot

66‧‧‧2nd side wall

67‧‧‧1st inlet

68‧‧‧2nd inlet

69‧‧‧ front wall

70‧‧‧Meshing port

71‧‧‧Chain guide column

75‧‧‧ Pulling plate installation

76‧‧‧ pull tab

80‧‧‧ sprocket guiding path

81, 82‧‧‧ sloped surface

83, 84‧‧‧ horizontal plane

231‧‧‧1st edge

232‧‧‧2nd edge

301‧‧‧1st sprocket

302‧‧‧2nd sprocket

301a, 302a‧‧‧ head

301b, 302b‧‧‧ neck

301c, 302c‧‧‧ base

311, 312‧‧‧1st half

311a, 312a‧‧‧1st head

311b, 312b‧‧‧1st neck

311c, 312c‧‧‧1st base

321, 322‧‧‧ 2nd half

321a, 322a‧‧‧2nd head

321b, 322b‧‧‧2nd neck

321c, 322c‧‧‧2nd base

331a, 332a‧‧‧1st convex

331b, 332b‧‧‧1st recess

331c, 332c‧‧‧1st order

341a, 342a‧‧‧2nd convex

341b, 342b‧‧‧2nd recess

341c, 342c‧‧‧ second order

A1‧‧‧ arrow

A2‧‧‧ arrow

A3‧‧‧ arrow

A11‧‧‧ arrow

A12‧‧‧ arrow

B1‧‧‧ arrow

B2‧‧‧ arrow

B3‧‧‧ arrow

B11‧‧‧ arrow

B12‧‧‧ arrow

A‧‧‧ offset

b‧‧‧The smallest size of the neck before and after the direction

L‧‧‧The size of the head in the front and rear direction

Fig. 1 is a front view showing a zipper constructed using a fastener chain according to an embodiment of the present invention.

Fig. 2 is a view showing a zipper chain in a separated state according to an embodiment of the present invention.

Figure 3 is a cross-sectional view taken along line A-A of Figure 2;

Figure 4 is a cross-sectional view taken along line B-B of Figure 2;

Fig. 5 is a view showing a fastener element of a fastener chain in an engaged state according to an embodiment of the present invention.

Figure 6 is a cross-sectional view taken along line C-C of Figure 5.

Fig. 7 is a perspective view of a slider for a slide fastener according to an embodiment of the present invention.

Fig. 8 is a side view of a slider for a slide fastener according to an embodiment of the present invention.

Fig. 9 is a view showing a state in which the slide fastener of the embodiment is separated by a slider.

Fig. 10 is a view showing a state of a reference example in which a slide fastener which is opposite to the front and back of the embodiment is separated by a slider.

Fig. 11 is a view showing a state in which the slide fastener of the embodiment is engaged by a slider.

Fig. 12 is a view showing a state of a reference example in which a slide fastener which is opposite to the front and back of the embodiment is engaged by a slider.

Fig. 13 shows the dimensions of the fastener elements 30 of the present embodiment.

Fig. 14 is a graph showing the transverse tensile strength corresponding to the offset of Table 1.

Fig. 15 is a graph showing the top intensity corresponding to the offset of Table 1.

Fig. 16 is a graph showing the sliding resistance at the time of separation corresponding to the offset amount of Table 2.

Fig. 17 is a graph showing the sliding resistance at the time of meshing corresponding to the offset amount of Table 3.

Hereinafter, the fastener chain 10 and the slide fastener 1 according to an embodiment of the present invention will be specifically described based on the drawings.

Fig. 1 is a front view showing a zipper constructed using a fastener chain according to an embodiment of the present invention.

The slide fastener 1 described in the present embodiment includes a pair of left and right fastener chains 10 having a first fastener element row 31 including a plurality of first fastener elements 301 fixed to the first fastener chain 21 a first chain belt 11 and a second chain belt 12 in which a second element row 32 including a plurality of second elements 302 is fixed to the second fastener chain 22; and a slider 6 along the left and right sides The continuous sprocket rows 31, 32 slide to engage and disengage the sprocket teeth 301, 302 of the continuous sprocket rows 31, 32.

Further, in the following description, the direction in which the continuous element rows are provided in the longitudinal direction of the fastener chain 10 is referred to as the front-rear direction, and the sliding slider 6 is used to set the direction in which the left and right continuous element rows 31, 32 are meshed. In the forward direction, the direction in which the continuous element rows 31 and 32 are separated is set to the rear direction. Further, the left-right direction is set to be horizontal to the surface of the fastener chain 10 and perpendicular to the front-rear direction. The direction perpendicular to the plane defined by the front-rear direction and the left-right direction is set to the front-back direction, and the side where the slider of the slider 6 of the fastener chain 10 exists is the front surface, and the opposite side is the back surface. The front and back directions may be referred to as an up-and-down direction, the front side may be referred to as an upper surface side, and the back side may be referred to as a lower surface side.

Further, the front direction may be referred to as a first direction, and the rear direction may be referred to as a second direction. The second direction is the opposite direction of the first direction. Further, the front side and the back side may be referred to as the first side and the second side.

The zipper chain 10 includes a pair of chain belts 11, 12. The chain belts 11, 12 have a pair of fastener chain fabrics 20 having an upper surface 21a and a lower surface 21b opposite to the upper surface 21a, and a chain row 31, 32, etc., which are included at specific intervals. Further, a plurality of fastener elements 301 and 302 fixed to the edge portion 23 of each of the pair of fastener tapes 20 are disposed such that the respective element rows 31 and 32 face each other.

Further, an upper stop (not shown) is fixed to the upper ends of the continuous element rows 31 and 32, and a stop (not shown) is fixed to the lower ends of the continuous element rows 31 and 32. Thereby, the slider 6 is prevented from coming off from the upper end and the lower end of the continuous element rows 31, 32. Further, in the present embodiment, the opening and closing member having the plug and the pin may be fixed instead of the lower stopper.

Fig. 2 is a view showing a zipper chain in a separated state according to an embodiment of the present invention. Figure 3 is a cross-sectional view taken along line A-A of Figure 2; Figure 4 is a cross-sectional view taken along line B-B of Figure 2;

The first sprocket 301 has a head portion 301a in the left-right direction of the zipper chain 10, which is located at the most The outer side of the first edge portion 231 of the first fastener stringer 21 is away from the outer side of the first zipper chain 21; the neck portion 301b is located further inside the head portion 301a (near the first edge portion 231) and is located outside the first edge portion 231; 301c, which sandwiches the first edge portion 231 on the inner side of the neck portion 301b. Further, the first element 301 has a first half 311 disposed on the upper surface 21a side of the first fastener chain 21, and a second half 321 disposed on the lower surface 21b of the first fastener chain 21. side. The first half 311 and the second half 321 are integrally formed by sandwiching the first fastener chain 21 from above and below.

The first half portion 311 has a first base portion 311c that is in contact with the upper surface 21a of the first fastener chain cloth 21, and a first neck portion 311b that protrudes from the first base portion 311c and faces the outer side of the first fastener stringer 21. And extending; and the first head portion 311a is formed at a front end of the first neck portion 311b. The second half portion 321 has a second base portion 321c that is in contact with the lower surface 21b of the first fastener stringer 21, and a second neck portion 321b that protrudes from the second base portion 321c and faces the outer side of the first fastener stringer 21. The second head portion 321a is formed at the front end of the second neck portion 321b. The first base portion 311 c and the second base portion 321 c sandwich the first edge portion 231 from the vertical direction.

The first element 301 of the present embodiment is in a state in which the first half 311 is displaced in the forward direction with respect to the second half 321 or a state in which the second half 321 is displaced in the rearward direction from the first half 311. form. A first convex portion 331a is formed in front of the first head portion 311a of the first half portion 311, a first concave portion 331b is formed in front of the first neck portion 311b, and a first step is formed in front of the first base portion 311c. Part 331c. The second convex portion 341a is formed behind the second head portion 321a of the second half portion 321, and the second concave portion 341b is formed behind the second neck portion 321b, and the second step is formed behind the second base portion 321c. Part 341c.

The second chain belt 12 of the present embodiment is formed symmetrically with respect to the first chain belt 11 in the left-right direction, and its constituent elements are the same as those of the first chain belt 11. The second element 302 has a head portion 302a located on the outer side of the second edge portion 232 farthest from the second fastener chain 22 in the left-right direction of the fastener chain 10, and a neck portion 302b located on the inner side of the head portion 302a. (near the second edge portion 232) and outside the second edge portion 232; and the base portion 302c sandwiches the second edge portion 232 from the inside of the neck portion 302b. Further, the second element 302 has a first half 312 which is disposed on the second zipper cloth 22 is on the upper surface 21a side; and the second half 322 is disposed on the lower surface 21b side of the second fastener chain 22 . The first half 312 and the second half 322 are integrally formed by sandwiching the second fastener chain 22 from above and below.

The first half 312 has a first base portion 312c that is in contact with the upper surface 21a of the second fastener chain 22, and a first neck portion 312b that protrudes from the first base portion 312c and faces the outer side of the second fastener chain 22 And extending the first head portion 312a at the front end of the first neck portion 312b. The second half 322 has a second base portion 322c that is in contact with the lower surface 21b of the second fastener chain 22, and a second neck portion 322b that protrudes from the second base portion 322c and faces the outside of the second fastener chain 22 And extending; and the second head portion 322a is formed at a front end of the second neck portion 322b. The first base portion 312c and the second base portion 322c sandwich the second edge portion 232 from the vertical direction.

The second element 302 of the present embodiment is formed in a state in which the first half 312 is displaced in the forward direction or in a state in which the second half 322 is displaced in the backward direction. A first convex portion 332a is formed in front of the opposite surface side of the first head portion 312a of the first half portion 312, and a first concave portion 332b is formed in front of the opposite surface side of the first neck portion 312b, and the first base portion 312c is formed. A first step portion 332c is formed on the front side of the opposite side. The second convex portion 342a is formed on the opposite side of the second surface portion 322a of the second half portion 322, and the second concave portion 342b is formed on the opposite side of the second neck portion 322b, and the second base portion 322c is formed. A second step portion 342c is formed on the opposite side of the back side.

Fig. 5 is a view showing a fastener chain in an engaged state according to an embodiment of the present invention. Figure 6 is a cross-sectional view taken along line C-C of Figure 5.

In the meshing state of the fastener chain 10 of the present embodiment, as shown in FIG. 5, the head portion 301a of the first element row 31 and the neck portion 302b of the second element row 32 adjacent to each other in the front-rear direction, and The neck portion 301b of the first element row 31 meshes with the head portion 302a of the second element row 32, respectively.

Further, as shown in FIG. 6, the first convex portion 331a of the first fastener element 301, the second concave portion 342b of the second fastener element 302, and the second convex portion 341a and the second fastener element 302 of the first fastener element 301. The first concave portion 332b faces the first concave portion 331b of the first element 301 (not shown), the second convex portion 342a of the second element 302, and the second concave portion 341b of the first element 301 and the second portion. The first convex portion of the sprocket 302 332a is opposite.

Thereby, the first sprocket row 31 and the second sprocket row 32 can be accurately meshed.

Next, the slider 6 of the fastener chain 10 of the present embodiment will be described.

Fig. 7 is a perspective view of a slider for a slide fastener according to an embodiment of the present invention. Fig. 8 is a side view of a slider for a slide fastener according to an embodiment of the present invention.

Referring to Fig. 7 and Fig. 8, the slider 6 of the present embodiment has a basic structure including an upper blade 61, a lower blade 62, and a first side wall 64 having a guide as shown in Fig. 1. a first guiding groove 63 of the first fastener chain 21; a second side wall 66 having a second guiding groove 65 for guiding the second fastener chain 22; and a front end wall 69 connecting the upper blade 61 and the lower wing The plate 62 is provided with a first introduction port 67 for allowing the first element row 31 shown in FIG. 2 to enter and exit in a separated state, and a direction below the first introduction port 67 for supplying the second element row 32. The second introduction port 68 that enters and exits; and an engagement port 70 for accessing the element row 3 in one of the meshing states shown in FIG.

The upper blade 61 has a tab mounting portion 75 on the upper surface. In the present embodiment, the handle attaching portion 75 is a gate type in which one end is fixed in a cantilever shape and extends in the sliding direction. However, the present invention is not limited thereto, and may be a handle attaching portion of any shape known to those skilled in the art. Further, a pull tab (not shown) having an annular portion at one end can be prepared, and the pull tab can be rotatably attached to the handle attaching portion 75 via the annular portion. Further, the pull tab (not shown) can be easily detached from the handle attaching portion 75 by pressing the front end of the tab attaching portion 75 downward (that is, in the direction of approaching the upper flap).

Referring to Fig. 8, the two introduction ports 67, 68 and one engagement port 70 are formed in a substantially Y-shaped chain guide formed inside the slider so as to be branched in the vertical direction along the respective guide grooves 63, 65. The path 80 is connected to each other. The element guide path 80 is defined by the inner surface of the upper blade 61, the inner surface of the lower blade 62, the inner side surfaces of the left and right side walls 64, 66, and the element guide post 71.

The inner surface of the flap 61 above the sprocket guiding path 80 is defined as: an inclined surface 81, The first introduction port 67 on the front side is inclined downward; and a horizontal surface 83 is connected to the inclined surface 81, and the element rows are meshed with each other. Further, the inner surface of the lower blade 62 has an inclined surface 82 which is inclined upward from the second introduction port 68 on the back side, and a horizontal surface 84 which is connected to the inclined surface 82 and which is engaged with the element rows. . The rear ends of the respective horizontal surfaces 83 and 84 are coupled to the engagement opening 70. In order to smoothly move the element rows, it is preferable that the connection portions of the inclined surfaces 81, 82 and the horizontal surfaces 83, 84 have a curved shape.

The guiding grooves 63, 65 are formed with inclined portions and horizontal portions corresponding to the inner surface of the upper wing plate 61 and the inner surface of the lower wing plate 62, and in order to smoothly move the fastener chain cloth, it is preferable that the connecting portion becomes a curve. shape. Specifically, the first guide groove 63 formed in the first side wall 64 has a front end that is coupled to the first introduction port 67 on the front side, an inclined portion that is connected to the front end and faces downward, and a horizontal portion that is connected to the horizontal portion. The inclined portions are provided for meshing with the element rows; and the rear end is coupled to the horizontal portion and coupled to the engaging opening 70; and the inclined portion and the horizontal portion are formed in parallel with the inner surface of the upper blade 61. The second guide groove 65 formed in the second side wall 66 has a front end connected to the second introduction port 68 on the back side, an inclined portion connected to the front end and facing upward, and a horizontal portion connected to the inclined portion and provided for The chain rows are engaged with each other; the rear end is coupled to the horizontal portion and coupled to the engagement opening 70; and the inclined portion and the horizontal portion are formed in parallel with the inner surface of the lower blade 62.

Next, an operation when the fastener elements of the fastener chain 10 of the present embodiment are separated by the slider 6 will be described.

Fig. 9 is a view showing a state in which the slide fastener of the embodiment is separated by a slider.

When the slider 6 is moved in the direction of the arrow A1, one of the meshing states enters the slider 6 from the meshing port 70. The meshing element rows that were originally engaged are separated by the element guide post 71 formed on the element guide path 80.

In the slider 6 of the present embodiment, the two introduction ports 67 and 68 are respectively located across the center line in the left-right direction, whereby the two introduction ports 67 and 68 are overlapped in the left-right direction. Minute. Thereby, each of the element rows 31 and 32 is separated in the front-back direction.

At the time of separation, the first element 301 of the first introduction port 67 facing the front side is pulled in the direction of the arrow A2 as shown in FIG. Then, the second convex portion 341a of the first sprocket 301 and the first concave portion 332b of the second sprocket 302, and the second concave portion 341b of the first sprocket 301 (not shown) and the first convex portion of the second sprocket 302 The first portion 331a of the first element 301, the second recess 342b of the second element 302, and the first recess 331b and the second element 302 of the first element 301 (not shown) are respectively in contact with each other. The second convex portions 342a are apart from each other.

In order to separate the first sprocket 301 from the second sprocket 302, it is necessary to move in the direction of the arrow A3. In the case of the present embodiment, after the second convex portion 341a and the second concave portion 341b of the first element 301 are in contact with the first concave portion 332b and the first convex portion 332a of the second element 302, respectively, the first element is moved. 301 is pulled in the direction of arrow A2. Then, the first element teeth 301 are inclined at an angle with respect to the second element teeth 302 by being inclined in the direction of the arrow A3.

Since the force of the arrow A2 applied to the first sprocket 301 shown in FIG. 9 is the same as the direction of the movement of the arrow A3, the first sprocket 301 is easy with respect to the force of the direction A1 of the pulling slider 6. Move in the direction of arrow A3. Therefore, the first sprocket 301 and the second sprocket 302 can be easily separated by moving the slider 6.

Fig. 10 is a view showing a state of a reference example in which a slide fastener which is opposite to the front and back of the embodiment is separated by a slider.

When the sprocket shown in FIG. 10 is different from the embodiment, when the slider 6 is pulled in the direction of the arrow A11 and moved backward in the separation, the first introduction to the front side is performed. The second element 302 of the port 67 moves in the direction of the arrow A12. Then, the first convex portion 331a of the first fastener element 301 and the second concave portion 342b of the second fastener element 302, and the first concave portion 331b of the first fastener element 301 (not shown) and the second convex portion of the second fastener element 302 The portions 342a are in contact with each other. Further, the second sprocket 302 generates a force to be rotated about the contact point, the second convex portion 341a of the first element 301 and the second concave portion 342b of the second element 302, and not shown. The second concave portion 341b of the first fastener element 301 and the second convex portion 342a of the second fastener element 302 are also in contact with each other.

In this case, the first convex portion 331a of the first fastener element 301 and the second concave portion 342b of the second fastener element 302, and the first concave portion 331b and the second fastener element 302 of the first fastener element 301 (not shown) Since the second convex portions 342a are in contact with each other, it is difficult to separate the first sprocket 301 from the second sprocket 302.

Next, an operation when the fastener elements of the fastener chain 10 of the present embodiment are engaged by the slider 6 will be described.

Fig. 11 is a view showing a state in which the slide fastener of the embodiment is engaged by a slider.

When the slider 6 is moved in the direction of the arrow B1, the first element teeth 301 in the separated state enters from the first introduction port 67 on the front side, and the second element teeth 302 enters from the second introduction port 68 on the back side. The first sprocket 301 and the second sprocket 302 are respectively guided by the sprocket guiding path 80 and meshed in the vicinity of the engaging opening 70, and are discharged from the engaging opening 70.

At the time of meshing, the second introduction port 68 from the back side enters and passes through the second element 302 of the element guide post 71, and is pulled in the direction of the arrow B2 as shown in FIG. Then, the first convex portion 331a of the first fastener element 301 and the second concave portion 342b of the second fastener element 302, and the first concave portion 331b of the first fastener element 301 (not shown) and the second convex portion of the second fastener element 302 The portion 342a is in contact, and the second element 302 is moved in the direction of the arrow B3.

Since the force of the arrow B2 applied to the second element 302 shown in FIG. 11 is the same as the direction of the movement of the arrow B3, the second element 302 is easy to move with respect to the force of the direction B1 of the pulling slider 6. Move in the direction of arrow B3. Therefore, the first sprocket 301 and the second sprocket 302 can be easily meshed by moving the slider 6.

Fig. 12 is a view showing a state of a reference example in which a slide fastener which is opposite to the front and back of the embodiment is engaged by a slider.

In the case where the sprocket shown in Fig. 12 is different from the embodiment, when the slider 6 is pulled in the direction of the arrow B11 and moved during the meshing, the first element of the meshing port 70 is moved. In 301, the first element 301 of the element guide post 71 moves in the direction of the arrow B12.

Therefore, there is a case where the front surface of the first head portion 311a of the first sprocket 301 is in contact with The second recess 332b of the second element 302 causes an obstacle to the meshing of the first element 301 and the second element 302.

Next, the size (referred to as an offset amount) in which the first half 311 and the second half 321 of each element of the present embodiment are shifted will be described. Further, the offset amount a is also a size that shifts the first head portion 311a with respect to the second head portion 321a and a size at which the first neck portion 311b is offset from the second neck portion (321b).

Fig. 13 shows the dimensions of the first element teeth 301 of the present embodiment. In the following, the first sprocket 301 will be described as an example, and the second sprocket 302 will be the same.

As shown in Fig. 13, the maximum dimension of the head portion 301a of the first element tooth 301 in the front-rear direction is L, the offset amount is a, and the minimum dimension of the neck portion 301b in the front-rear direction is b. Further, the dimension L in the front-rear direction can be changed to the dimension in the first direction or the dimension in the second direction. Here, the first head portion 311a of the first half portion 311 and the second head portion 321a of the second half portion 321 have the same size. Further, the first neck portion 311b and the second neck portion 321b have the same size.

In other words, the offset a of the first half 311 and the second half 321 of the first sprocket 301 is the dimension of the first convex portion 331a and the second convex portion 341a of the first sprocket 301 in the front-rear direction. Further, similarly, the offset amount a is also the dimension of the first recessed portion 331b and the second recessed portion 341b in the front-rear direction.

When the offset amount a is measured, the size from the front end edge of the first head portion 311a of the first half portion 311 to the front end edge of the second head portion 321a of the second half portion 321 can be measured, or The second end portion 321 of the second half portion 321 is obtained from the rear end edge of the second head portion 321a to the rear end edge of the first head portion 311a of the first half portion 311. Alternatively, the size from the front end edge of the first neck portion 311b of the first half portion 311 to the front end edge of the second neck portion 321b of the second half portion 321 or the second half portion 321 can be measured. The rear end edge of the second neck portion 321b is obtained from the size of the rear end edge of the first neck portion 311b of the first half portion 311.

Table 1 shows the results of the strength test of the chain performed on two items of the transverse tensile strength and the top strength. Further, Fig. 14 is a graph showing the transverse pull strength corresponding to the offset amount of Table 1. Fig. 15 is a graph showing the top intensity corresponding to the offset of Table 1. Here, horizontal The tensile strength is a magnitude of the resistance when the left and right fastener chains are pulled at a fixed speed in the opposite direction to the left and right in a state in which the fastener chain is engaged. Further, the top strength is a measure of the resistance when the fastener element is placed in a direction perpendicular to the chain surface in a state in which the fastener chain is engaged. The unit is [N]. Five zipper chains were prepared in the transverse tensile strength and the top strength test, and the resistance of each was recorded, and the maximum value (max), the minimum value (min), and the average value (Ave) were indicated.

As shown in Fig. 14, if the offset is 0.1 mm and 0.4 mm, the average value of the transverse tensile strength of the fastener chain is lower than a specific reference value of 400N. If this is the case, it cannot be said that the strength is sufficient, and therefore the offset a of the fastener chain preferably satisfies the following formula (1).

0.2≦a≦0.3 (1)

Further, the ratio of the offset amount a to the size L of the head portion 301a of the first element 301 may be defined. In this case, it is preferable to satisfy the following formula (2).

9%≦a/L≦15% (2)

Further, it can satisfy 9.6% ≦a/L ≦ 14.4%.

According to this formula, if it is less than 9%, sufficient lateral tensile strength or top strength cannot be obtained, and if it is more than 15%, the sliding resistance of meshing and separation becomes large. Here, the main reason for the increase in the sliding resistance is as follows. When the inside of the slider is separated as an example, the left and right sprocket are in a self-engaging state, and the sprocket is inclined so that the inlet side of the slider is away from the vertical direction. Since the posture is separated, if a/L is large, it is necessary to largely change the posture and be inclined for separation, and therefore, the sliding resistance is increased. When engaged, the left and right spurs of the separated state follow Since the introduction port side faces the engagement port side and changes the posture so as to be horizontal from the inclined state, the sliding resistance becomes large as in the case of separation.

In the present embodiment, it is sufficient to set L = 2.1 mm. Further, for reference, the dimension (width) b of the front and rear directions of the neck portion of the present embodiment was set to 1.2 mm.

Table 2 shows the sliding resistance at the time of separation of the zipper. Table 3 shows the sliding resistance when the zipper is engaged. Further, Fig. 16 is a graph showing the sliding resistance at the time of separation with respect to the offset amount of Table 2. Fig. 17 is a graph showing the sliding resistance at the time of meshing with respect to the offset of Table 3. Here, the sliding resistance at the time of meshing means the magnitude of the resistance when the slider of the slider of the zipper is pulled to move in the direction in which the zipper is engaged, and the sliding resistance at the time of the separation means the pulling of the slider of the zipper. The amount of resistance when the sheet is moved in the direction in which the zipper is separated.

The second direction of 0.2 mm in the table means that the offset a of the fastener element is 0.2 mm, and the first half 311 is offset from the second half 321 in the rearward direction (second direction), and the first direction is 0.2 mm. The offset amount a of the fastener element is 0.2 mm, and the first half 311 is offset from the second half 321 in the forward direction (first direction), and the second direction of 0.3 mm is the deviation of the fastener element. When the amount of shift a is 0.3 mm and the first half 311 is offset from the second half 321 in the rearward direction (second direction), the first direction of 0.3 mm means that the offset amount a of the fastener element is 0.3 mm. The first half 311 is offset from the second half 321 in the forward direction (first direction). The unit is [N].

Table 2 shows the magnitude of the resistance of the slider when the zipper in the engaged state is separated by the slider, prepares five zippers, and records the magnitude of the resistance when sliding the slider, and indicates the maximum value (max) and the minimum value. (min), and average (Ave).

Table 3 shows the sliding member when the zipper in the separated state is engaged by the slider For the magnitude of the resistance, prepare 5 zippers and record the resistance when sliding the slider, and indicate the maximum (max), minimum (min), and average (Ave).

As shown in FIGS. 16 and 17, in the case of the same offset of 0.2 mm or 0.3 mm, the first half 311 of the first element 301 shown in FIG. 13 is opposite to the second half. The sliding resistance of the zipper in the forward direction (first direction) 321 is smaller than the sliding of the zipper in which the first half 311 of the first sprocket 301 is offset from the second half 321 in the rearward direction (second direction). resistance. In other words, in the case of the same amount of displacement, the first half 311 of the first element 301 is offset from the second half 321 in the forward direction (first direction), and is smaller than the first element 301. The zipper in which the one half portion 311 is offset with respect to the second half portion 321 in the rearward direction (second direction) can slide more smoothly. Further, as described above, the case of the second element 302 is also the same result.

As described above, the slide fastener 1 according to the present embodiment includes the fastener chain 10 which is disposed such that the pair of fastener tapes 31, 32 face each other, and the pair of fastener tapes 11, 12 include The upper surface 21a, 22a and the pair of fastener tapes 21, 22 on the opposite surface side surfaces 21b, 22b of the upper surfaces 21a, 22a, and the pair of fastener tapes 21, 22 are fixed at a specific pitch. a sprocket row of a plurality of sprocket teeth 301, 302 of each of the edge portions 23; and a slider 6 including a flap 61 disposed on the upper surface 21a, 22a side and having the tab 76 mounted thereon, and disposed on the lower surface The 21b, 22b side lower blade 62, the upper blade 61 and the lower blade 62 are connected, and the first inlet port 67 for allowing the first element row 31 to enter and exit and the lower surface side of the first inlet port 67 are provided. And a front end wall of the second introduction port 68 for the second chain tooth row 32 to enter and exit, and a meshing port 70 for inserting and discharging the chain element in one of the meshing states, and for each chain tooth row 31, 32 Engage or separate and move freely. At the front end wall, the second introduction port 68 is opposite to the first guide The inlet 67 has a step in the up and down direction and is disposed below the first introduction port 67. Each of the fastener elements 301 and 302 has a base portion 301c and 302c fixed to the fastener chain cloth 2, and head portions 301a and 302a protruding from the base portions 301c and 302c and meshing with the opposing fastener elements 301 and 302, and each of the fastener elements 301, The head portions 301a and 302a of the 302 have the first head portions 311a and 312a disposed on the upper surfaces 21a and 22a, and the second head portions 321a and 322a disposed on the lower surfaces 21b and 22b of the fastener tapes 21 and 22. Further, the first head portions 311a and 312a are formed to be offset from the first head portions 321a and 322a by moving the sliders 6 in the first direction when the element rows 31 and 32 are engaged. Therefore, it is possible to provide a The upper and lower meshing sliders 6 allow the continuous chain rows 31, 32 to easily engage and disengage the zipper.

Further, according to the slide fastener 1 of the present embodiment, each of the fastener elements 301 and 302 has a width in the front-rear direction between the base portions 301c and 302c and the head portions 301a and 302a, that is, a width larger than the base portions 301c and 302c and the head portions 301a and 302a. The neck portions 301b and 302b are small, and the neck portions 301b and 302b of the fastener elements 301 and 302 have the first neck portions 311b and 312b disposed on the upper surfaces 21a and 22a, and the lower surface 21b disposed on the fastener chain cloth 20. In the second neck portions 321b and 322b on the 22b side, the first neck portions 311b and 312b are formed to be offset from the first neck portions 321b and 322b in the first direction when the element tooth rows 31 and 32 are engaged. It provides a zipper that is easier and more stable to engage and disengage.

Further, in the slide fastener 1 of the present embodiment, each of the fastener elements 301 and 302 is formed with the first convex portions 331a and 332a on the first direction side of the lower surfaces 21b and 22b of the first head portions 311a and 312a. The first concave portions 331b and 332b are formed on the first direction side of the lower surfaces 21b and 22b of the neck portions 311b and 312b, and the second surface opposite to the first direction on the upper surfaces 21a and 22a of the second head portions 321a and 322a. The second convex portions 341a and 342a are formed on the direction side, and the second concave portions 341b and 342b are formed on the second surface side opposite to the first direction on the upper surfaces 21a and 22a of the second neck portions 321b and 322b. When the fastener tape is engaged, the first convex portions 331a and 332a of the fastener elements 301 and 302 on the one side are engaged with the second concave portions 341b and 342b of the opposing fastener elements 301 and 302, and the fastener elements 301 on one side are The first recesses 331b and 332b of 302 and the opposite teeth 301, Since the second convex portions 341a and 342a of 302 are engaged, a zipper that stably meshes and separates can be provided.

Further, according to the slide fastener 1 of the present embodiment, the offset amount a of the first head portions 311a and 312a offset from the second head portions 321a and 322a is 0.2 mm or more and 0.3 mm or less, and the offset amount a is relative to the chain. The ratio a/L of the dimension L of the heads 301a and 302a of the teeth 301 and 302 in the first direction is 9% or more and 15% or less. Therefore, the strength required for the zipper is sufficient, and a zipper having a small sliding resistance can be obtained. 1. If it is less than 9%, sufficient strength cannot be obtained, and if it is more than 15%, the sliding resistance becomes large.

The various embodiments of the present invention have been described above, but the present invention is not limited to the embodiments, and the embodiments configured by appropriately combining the configurations of the respective embodiments are also within the scope of the present invention.

1‧‧‧ zipper

6‧‧‧Sliding parts

10‧‧‧ zipper chain

31‧‧‧1st chain tooth row

32‧‧‧2nd chain tooth row

61‧‧‧Upper wing

62‧‧‧lower wing

67‧‧‧1st inlet

68‧‧‧2nd inlet

70‧‧‧Meshing port

71‧‧‧Chain guide column

75‧‧‧ Pulling plate installation

76‧‧‧ pull tab

80‧‧‧ sprocket guiding path

301‧‧‧1st sprocket

302‧‧‧2nd sprocket

311, 312‧‧‧1st half

311a‧‧‧1st head

312b‧‧‧1st neck

321, 322‧‧‧ 2nd half

321a‧‧‧2nd head

322b‧‧‧2nd neck

331a‧‧‧1st convex

332b‧‧‧1st recess

341a‧‧‧2nd convex

342b‧‧‧2nd recess

A1‧‧‧ arrow

A2‧‧‧ arrow

A3‧‧‧ arrow

Claims (3)

A zipper (1), characterized by comprising: a zipper chain (10) configured to align a pair of fastener tapes (31, 32) with a pair of chain belts (11, 12), the pair of chain belts (11, 12) includes: a pair of zipper chain cloths (21, 22) having an upper surface (21a, 22a) and a lower surface (21b, on the opposite side of the upper surface (21a, 22a) 22b); and a chain of teeth comprising a plurality of fastener elements (301, 302) fixed to the edge portions (231, 232) of each of the pair of fastener chain fabrics (21, 22) at a specific pitch And a slider (6) comprising: an upper wing plate (61) disposed on the upper surface (21a, 22a) side; and a lower wing plate (62) disposed on the lower surface (21b, a front end wall that connects the upper wing plate (61) and the lower wing plate (62), and has a first introduction port (67) for feeding in and out of the first element row (31), And a second introduction port (68) provided on the lower surface side of the first introduction port (67) for feeding in and out of the second element row (32); and a meshing port (70) for One of the meshing states is in and out of the above-mentioned element rows (31, 32); the above-mentioned slider (6) can be a first direction that moves when the element rows (31, 32) are meshed, and a second direction that moves in a direction opposite to the first direction and that moves when the element rows (31, 32) are separated; Each of the fastener elements (301, 302) has a base portion (301c, 302c) fixed to the fastener chain cloth (21, 22), and a head portion (301a, 302a) from the base portion (301c) And 302c) protruding and meshing with the opposite sprocket (301, 302); the head (301a, 302a) of each of the sprocket (301, 302) having: a first head (311a, 312a), The second head (321a, 22a) is disposed on the upper surface (21a, 22a) side; and the second head (321a, 322a) is disposed on the lower surface (21b, 22b) side of the fastener chain (21, 22); The first head portions (311a, 312a) are formed to be offset with respect to the first head portions (321a, 322a) in the first direction; the respective element teeth (301, 302) are attached to the respective base portions (301c) And 302c) having a neck portion (301b, 302b) having a smaller width than the base portion (301c, 302c) and the head portion (301a, 302a), and the respective fastener elements (301) The neck portion (301b, 302b) of (302) includes: a first neck portion (311b, 312b) disposed on the upper surface (21a, 22a) side; and a second neck portion (321b, 322b). The first neck portions (22b, 312b) are disposed on the lower surface (22a, 22b) side of the fastener stringer (21, 22), and the first neck portion (311b, 312b) is more toward the second neck portion (321b, 322b). The first direction is formed by shifting. The zipper (1) of claim 1, wherein each of the fastener elements (301, 302) is formed with a first convex portion (331a, 332a) on the first direction side of the first head portion (311a, 312a). First concave portions (331b, 332b) are formed on the first direction side of the first neck portion (311b, 312b), and second convex portions are formed on the second direction side of the second head portions (321a, 322a). In the second portion (341b, 342b), the second recesses (341b, 342b) are formed on the second direction side of the second neck portion (321b, 322b). When the pair of link belts are engaged, one side of the fastener element (301) The first convex portion (331a) is engaged with the second concave portion (342b) of the opposing sprocket (302), and the first concave portion (331b) of the sprocket (301) on one side is opposite to the opposite The second convex portion (342a) of the fastener element (302) is engaged. The zipper (1) of claim 1 or 2, wherein an offset amount (a) of the first head portion (311a, 312a) with respect to the second head portion (321a, 322a) is 0.2 mm or more and 0.3 mm or less And The ratio (a/L) of the offset (a) to the dimension (L) of the head (301a, 302a) in the first direction with respect to the sprocket (301, 302) is 9% or more and 15%. the following.