JP2015116355A - Slide fastener - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slide fastener which can easily engage and separate continuous element rows by a vertical engagement type slider.SOLUTION: Elements (301, 302) of a slide fastener (1) have base parts (301c, 302c) fixed to fastener tapes (21, 22), and head parts (301a, 302a) which protrude from the base parts (301c, 302c) and are engage with the facing elements (301, 302) respectively. The head parts (301a, 302a) of elements (31, 32) have first head parts (311a, 312a) disposed on the side of upper surfaces (21a, 22a) and second head parts (321a, 322a) disposed on the side of lower surfaces (21b, 22b) of the fastener tapes (21, 22). The first head parts (311a, 312a) are formed shifted in a first direction with respect to the second head parts (321a, 322a).

Description

  The present invention relates to a slide fastener in which a fastener chain in which a continuous element row is fixed to a fastener tape is engaged and separated by an upper and lower engagement type slider.

  In International Publication No. 2010/082291 (Patent Document 1), the tooth guide path of the slider is arranged with a step in the front and back direction that allows the first and second service teeth in the separated state to enter or exit. Left and right shoulders and a rear opening for discharging or entering the meshing first and second engagement teeth, and extending the length of the front locking portion in the first engagement teeth The slide fastener formed shorter than the extension length of the front locking part in the second dentition is described.

  According to the invention described in Patent Document 1, when engaging the left and right dentitions, the first dentition with a short extension is connected to the second dentition with a long extension from the back side. By introducing the rows from the front side to the front side and the back side, it becomes easy to make the left and right dentitions merge obliquely from the front and back directions and the left and right directions to engage each other. In addition, when separating the left and right dentitions in mesh, it is easy to separate the dentitions diagonally in the front and back direction and the left and right direction, thereby separating the dentitions from each other.

International Publication No. 2010/082291

  An object of the present invention is to provide a slide fastener that allows a continuous element row to be easily engaged and separated by a vertically engaging slider.

The slide fastener according to one embodiment of the present invention is
A pair of fastener stringers having an upper surface and a pair of fastener tapes having a lower surface on the opposite side of the upper surface, and an element row composed of a plurality of elements fixed at predetermined pitches to respective edges of the pair of fastener tapes Fastener chains arranged so that each element row is opposed to each other,
An upper wing plate arranged on the upper surface side, a lower wing plate arranged on the lower surface side, the upper wing plate and the lower wing plate are connected, and a first front port for the first element row to enter and exit A front end wall having a second front port provided in a stepwise manner on the lower surface side of the first front port and having a second front port for entering and exiting, and a pair of the element rows in meshed state for entering and exiting A slider having a rear opening and movable to mesh or separate the element rows;
With
Each element has a base fixed to the fastener tape and a head protruding from the base and meshing with the opposing element,
The head of each element has a first head disposed on the upper surface side, and a second head disposed on the lower surface side of the fastener tape,
The first head is formed so as to be shifted from the second head in a first direction in which the slider is moved when the element rows are engaged with each other.

In the slide fastener according to one embodiment of the present invention,
Each element has a neck portion having a width smaller than that of the base portion and the head portion between the base portion and the head portion.
The neck portion of each element has a first neck portion arranged on the upper surface side, and a second neck portion arranged on the lower surface side of the fastener tape,
The first neck is formed so as to be shifted in the first direction when the element rows are engaged with each other than the second neck.

In the slide fastener according to one embodiment of the present invention,
Each element is
A first convex portion is formed on the first direction side on the lower surface side of the first head,
A first recess is formed on the first direction side of the lower surface side of the first neck,
A second convex portion is formed on a second direction side opposite to the first direction on the lower surface side of the second head, and a second opposite to the first direction on the upper surface side of the second neck portion. A second recess is formed on the direction side;
When the pair of fastener stringers are engaged, the first convex portion of one element is engaged with the second concave portion of the opposing element,
The first concave portion of one element is engaged with the second convex portion of the opposing element.

The amount of displacement of the first head relative to the second head is 0.2 mm or more and 0.3 mm or less,
And the ratio of the deviation | shift amount with respect to the dimension along the said 1st direction of the said head of the said element is 9% or more and 15% or less, It is characterized by the above-mentioned.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the slide fastener which engages and isolate | separates easily a continuous element row | line with an up-and-down meshing type slider.

It is a front view which shows the slide fastener comprised using the fastener chain of one Embodiment concerning this invention. It is a figure which shows the fastener chain of the separation state of one Embodiment concerning this invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a figure which shows the element of the fastener chain of the meshing state of one Embodiment concerning this invention. It is CC sectional drawing of FIG. It is a perspective view of the slider of the slide fastener of one Embodiment concerning this invention. It is a side view of the slider of the slide fastener of one Embodiment concerning this invention. It is a figure showing the state which has isolate | separated the slide fastener of this embodiment with the slider. It is a figure showing the state of the reference example which has separated the slide fastener opposite to the front and back different from this embodiment with the slider. It is a figure showing the state which has engaged the slide fastener of this embodiment with the slider. It is a figure showing the state of the reference example which has meshed the slide fastener opposite to the front and back different from this embodiment with the slider. The dimension of the element 30 of this embodiment is shown. It is a graph which shows the horizontal pulling strength with respect to the deviation | shift amount of Table 1. It is a graph which shows the thrust strength with respect to the deviation | shift amount of Table 1. FIG. It is a graph which shows the sliding resistance at the time of isolation | separation with respect to the deviation | shift amount of Table 2. FIG. It is a graph which shows the sliding resistance at the time of a meshing with respect to the deviation | shift amount of Table 3.

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

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

  The slide fastener 1 described in the present embodiment includes a first fastener stringer 11 in which a first element row 31 including a plurality of first elements 301 is fixed to a first fastener tape 21 and a second element 302 including a plurality of second elements 302. The two element rows 32 slide along the pair of left and right fastener chains 10 having the second fastener stringer 12 fixed to the second fastener tape 22, and the left and right continuous element rows 31, 32. And a slider 6 for meshing and separating 32 elements 301 and 302.

  In the following description, the direction in which the continuous element rows are provided in the longitudinal direction of the fastener chain 10 is defined as the front-rear direction, and the direction in which the slider 6 is slid to engage the left and right continuous element rows 31, 32 is the front direction. The separation direction is the rear direction. The left-right direction is a direction horizontal to the surface of the fastener chain 10 and perpendicular to the front-rear direction. The direction perpendicular to the front and rear direction and the surface defined by the left and right direction is the front and back direction, the side on which the handle of the slider 6 of the fastener chain 10 is present is the front side, and the opposite side is the back side. With the front and back directions as the up and down directions, the front side can also be referred to as the upper surface side, and the back surface side as the lower surface side.

  The forward direction may be referred to as the first direction, and the backward direction may be referred to as the second direction. The second direction is the opposite direction of the first direction. The front surface and the back surface may be referred to as the first surface and the second surface.

  The fastener chain 10 includes a pair of fastener stringers 11 and 12. The fastener stringers 11 and 12 include a pair of fastener tapes 20 having an upper surface 21a and a lower surface 21b opposite to the upper surface 21a, and a plurality of fastener tapers 20 fixed to the respective edge portions 23 of the pair of fastener tapes 20 at a predetermined pitch. Element rows 31 and 32 including elements 301 and 302, and the element rows 31 and 32 are arranged to face each other.

  An upper stopper (not shown) is fixed to the upper ends of the continuous element rows 31 and 32, and one lower stopper (not shown) is fixed to the lower ends of the continuous element rows 31 and 32. As a result, the slider 6 is prevented from being detached from the upper and lower ends of the continuous element rows 31 and 32. In this embodiment, it is also possible to fix an opening tool having a butterfly bar and a box bar instead of the bottom stopper.

  FIG. 2 is a diagram showing a separated fastener chain according to an embodiment of the present invention. FIG. 3 is a cross-sectional view taken along the line AA of FIG. 4 is a cross-sectional view taken along line BB in FIG.

  The first element 301 includes a head 301a located on the outermost side from the first edge 231 of the first fastener tape 21 in the left-right direction of the fastener chain 10, and an inner side (closer to the first edge 231) than the head 301a. ) And a neck portion 301b positioned outside the first edge portion 231 and a base portion 301c that sandwiches the first edge portion 231 inside the neck portion 301b. The first element 301 includes a first half 311 disposed on the upper surface 21 a side of the first fastener tape 21 and a second half 321 disposed on the lower surface 21 b side of the first fastener tape 21. . The first half 311 and the second half 321 are integrally formed with the first fastener tape 21 sandwiched from above and below.

  The first half 311 includes a first base 311c that contacts the top surface 21a of the first fastener tape 21, a first neck 311b that protrudes from the first base 311c and extends toward the outside of the first fastener tape 21, and a first neck. And a first head 311a formed at the tip of 311b. The second half 321 includes a second base 321 c that contacts the lower surface 21 b of the first fastener tape 21, a second neck 321 b that protrudes from the second base 321 c and extends toward the outside of the first fastener tape 21, and a second neck And a second head 321a formed at the tip of 321b. The first base portion 311c and the second base portion 321c sandwich the first edge portion 231 from the vertical direction.

  In the first element 301 of the present embodiment, the first half 311 is shifted in the front direction with respect to the second half 321 or the second half 321 is shifted in the backward direction with respect to the first half 311. It is formed in a state. A first convex portion 331a is formed in front of the first head portion 311a of the first half 311, a first concave portion 331b is formed in front of the first neck portion 311b, and a first step portion 331c is formed in front of the first base portion 311c. Is done. A second protrusion 341a is formed behind the second head 321a of the second half 321, a second recess 341b is formed behind the second neck 321b, and a second step 341c is formed behind the second base 321c. Is done.

  The second fastener stringer 12 of this embodiment is formed symmetrically with the first fastener stringer 11 in the left-right direction, and the constituent elements thereof are the same as those of the first fastener stringer 11. The second element 302 includes a head 302a located on the outermost side from the second edge 232 of the second fastener tape 22 in the left-right direction of the fastener chain 10, and an inner side (closer to the second edge 232) than the head 302a. ) And a neck portion 302b positioned outside the second edge portion 232, and a base portion 302c that sandwiches the second edge portion 232 inside the neck portion 302b. The second element 302 has a first half 312 disposed on the upper surface 21 a side of the second fastener tape 22 and a second half 322 disposed on the lower surface 21 b side of the second fastener tape 22. . The first half 312 and the second half 322 are integrally formed with the second fastener tape 22 sandwiched from above and below.

  The first half 312 includes a first base 312c that contacts the upper surface 21a of the second fastener tape 22, a first neck 312b that protrudes from the first base 312c and extends toward the outside of the second fastener tape 22, and a first neck. And a first head 312a formed at the tip of 312b. The second half 322 includes a second base 322c that contacts the lower surface 21b of the second fastener tape 22, a second neck 322b that protrudes from the second base 322c and extends toward the outside of the second fastener tape 22, and a second neck. And a second head 322a formed at the tip of 322b. The first base 312c and the second base 322c sandwich the second edge 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. The first half 312 has a first convex portion 332a in front of the first head 312a on the opposite side of the first head 312a, a first concave portion 332b in front of the first neck 312b on the opposite side, and a front side on the opposite side of the first base 312c. The first step portion 332c is formed in. The second convex portion 342a is behind the second head 322a on the opposite side of the second head 322a, the second concave portion 342b is behind the second neck 322b, and the rear side on the opposite side of the second base 322c. Is formed with a second step 342c.

  FIG. 5 is a view showing a meshed fastener chain according to an embodiment of the present invention. 6 is a cross-sectional view taken along the line CC of FIG.

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

  As shown in FIG. 6, the first convex portion 331 a of the first element 301 and the second concave portion 342 b of the second element 302 and the second convex portion 341 a of the first element 301 and the first concave portion 332 b of the second element 302 are used. The first concave portion 331b of the first element 301 and the second convex portion 342a of the second element 302, and the second concave portion 341b of the first element 301 and the first convex portion 332a of the second element 302 are not shown. opposite.

  Thereby, the opposing first element row 31 and second element row 32 can be accurately meshed with each other.

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

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

  7 and 8, the slider 6 according to the present embodiment has an upper blade 61, a lower blade 62, and a first guide groove 63 for guiding the first fastener tape 21 shown in FIG. FIG. 2 shows a state in which the first side wall 64 having the first side wall 64, the second side wall 66 having the second guide groove 65 for guiding the second fastener tape 22, the upper blade 61 and the lower blade 62 are connected and separated. A front end wall provided with a first front port 67 through which the first element row 31 enters and exits and a second front port 68 through which the second element row 32 enters and exits are located below the first front port 67. 69 and one rear port 70 through which the pair of element rows 3 shown in FIG.

  The upper blade 61 has a handle attaching portion 75 on the upper surface. In the present embodiment, the pull attachment portion 75 is a gate type in which one end is fixed in a cantilever shape and extends in the sliding direction, but is not limited thereto, and any one known to those skilled in the art. It can be set as a shape pulling attachment part. Further, a handle (not shown) having an annular portion at one end is prepared, and the handle can be rotatably attached to the handle attachment portion 75 via the annular portion. Further, by tightening the tip of the puller attachment portion 75 downward (that is, in a direction approaching the upper blade), it is possible to prevent a puller (not shown) from easily coming off from the puller attachment portion 75.

  Referring to FIG. 8, two front openings 67 and 68 and one rear opening 70 are substantially Y-shaped element guides formed inside the slider so as to branch up and down along the guide grooves 63 and 65. They are connected by a path 80. 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 surfaces of the left and right side walls 64 and 66, and the element guide column 71.

  The inner surface of the upper blade 61 that defines the element guide path 80 is an inclined surface 81 that extends downward from the first front port 67 on the surface side, and a horizontal plane that is connected to the inclined surface 81 and that meshes the element rows. 83. Further, the inner surface of the lower wing plate 62 has an inclined surface 82 that extends upward from the second front port 68 on the rear surface side, and a horizontal surface 84 that is connected to the inclined surface 82 and that engages the element rows. ing. The rear ends of the horizontal surfaces 83 and 84 communicate with the rear port 70. It is preferable that the connection part of each inclined surface 81 and 82 and the horizontal surfaces 83 and 84 is curvilinear for the smooth movement of an element row | line | column.

  The guide grooves 63 and 65 are formed with an inclined portion and a horizontal portion corresponding to the shapes of the inner surface of the upper wing plate 61 and the inner surface of the lower wing plate 62, and the connecting portions are for smooth movement of the fastener tape. A curved shape is preferred. Specifically, the first guide groove 63 formed in the first side wall 64 is connected to the front end that communicates with the first front port 67 on the surface side, the inclined portion that is connected to the front end and is directed downward, and is connected to the inclined portion. It has a horizontal part that engages the element rows, and a rear end that is connected to the horizontal part and communicates with the rear port 70, and the inclined part and the horizontal part are formed to be parallel to the inner surface of the upper blade 61. Has been. The second guide groove 65 formed in the second side wall 66 includes a front end that communicates with the second front port 68 on the back surface side, an inclined portion that is connected to the front end and directed forward, and is connected to the inclined portion and meshes between the element rows. And a rear end connected to the horizontal portion and connected to the rear port 70. The inclined portion and the horizontal portion are formed to be parallel to the inner surface of the lower blade 62.

  Next, the operation | movement at the time of separating the element of the fastener chain 10 of this embodiment with the slider 6 is demonstrated.

  FIG. 9 is a diagram illustrating a state in which the slide fastener of the present embodiment is separated by a slider.

  When the slider 6 is moved in the direction of the arrow A1, a pair of engaged element rows enters the slider 6 from the rear port 70. The element rows initially engaged with each other are separated by an element guide column 71 formed in the element guide path 80.

  In the slider 6 according to the present embodiment, the two front ports 67 and 68 each straddle the center line in the left-right direction, and as a result, the two front ports 67 and 68 have overlapping portions in the left-right direction. Yes. Thereby, each element row | line | column 31 and 32 isolate | separates in the front-back direction.

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

  In order for the first element 301 to move away from the second element 302, movement in the direction of the arrow A3 is necessary. In the case of this embodiment, after the 2nd convex part 341a and the 2nd recessed part 341b of the 1st element 301 contact the 1st recessed part 332b and the 1st convex part 332a of the 2nd element 302, respectively, the 1st element 301 Is pulled in the direction of arrow A2. The first element 301 is inclined in the direction of the arrow A3, so that the first element 301 has a slippery angle with respect to the second element 302.

  Since the force in the direction of arrow A2 and the movement in the direction of arrow A3 applied to the first element 301 shown in FIG. 9 are the same in the direction of rotation, the first element 301 moves in the direction of arrow A3 with respect to the force in the direction A1 pulling the slider 6. Moves easily in the direction. Therefore, the first element 301 and the second element 302 can be easily separated by further moving the slider 6.

  FIG. 10 is a diagram illustrating a state of a reference example in which slide fasteners that are opposite to the front and back surfaces different from the present embodiment are separated by a slider.

  In the case of an example in which the orientation of the element is different from that of the present embodiment shown in FIG. 10, when the slider 6 is pulled in the direction of the arrow A11 and moved backward during separation, the second heading toward the first front port 67 on the surface side is performed. Element 302 moves in the direction of arrow A12. Then, the 1st convex part 331a of the 1st element 301 and the 2nd recessed part 342b of the 2nd element 302, the 1st recessed part 331b of the 1st element 301 which is not illustrated, and the 2nd convex part 342a of the 2nd element 302 contact, respectively. Then, the second element 302 receives a force to rotate around the contact point, and the second convex portion 341a of the first element 301, the second concave portion 342b of the second element 302, and the first element 301 (not shown). The second concave portion 341b and the second convex portion 342a of the second element 302 are also in contact with each other.

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

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

  FIG. 11 is a diagram illustrating a state in which the slide fastener of the present embodiment is engaged with a slider.

  When the slider 6 is moved in the direction of arrow B1, the separated first element 301 enters from the first front port 67 on the front surface side, and the second element 302 enters from the second front port 68 on the back surface side. The first element 301 and the second element 302 are each guided by the element guide path 80, meshed before the rear port 70, and discharged from the rear port 70.

  Upon engagement, the second element 302 that has entered from the second front port 68 on the back side and passed through the element guide column 71 is pulled in the direction of arrow B2, as shown in FIG. Then, the first convex portion 331a of the first element 301 and the second concave portion 342b of the second element 302, the first concave portion 331b of the first element 301 (not shown), and the second convex portion 342a of the second element 302 come into contact with each other. The two elements 302 move in the direction of the arrow B3.

  Since the force in the direction of arrow B2 and the movement in the direction of arrow B3 applied to the second element 302 shown in FIG. 11 are the same in the direction of rotation, the second element 302 moves in the direction of arrow B3 with respect to the force in the direction B1 pulling the slider 6. Moves easily in the direction. Therefore, when the slider 6 further moves, the first element 301 and the second element 302 can be easily engaged with each other.

  FIG. 12 is a diagram illustrating a state of a reference example in which slide fasteners that are opposite to the front and back surfaces different from the present embodiment are engaged by a slider.

  In the example in which the orientation of the element is different from that of the present embodiment shown in FIG. 12, when the slider 6 is pulled and moved in the direction of the arrow B11 during meshing, the element guide column 71 of the first element 301 toward the rear port 70 is moved. The first element 301 that has passed through moves in the direction of the arrow B12.

  Then, the surface of the first head 311a of the first element 301 may come into contact with the second recess 332b of the second element 302, which may hinder the engagement of the first element 301 and the second element 302.

  Next, the dimension (referred to as the shift amount) shifted between the first half 311 and the second half 321 of each element of this embodiment will be described. The shift amount a is also a dimension for shifting the first head 311a with respect to the second head 321a and a dimension for shifting the first neck (311b) with respect to the second neck (321b).

  FIG. 13 shows the dimensions of the first element 301 of the present embodiment. Hereinafter, the dimensions will be described by taking the first element 301 as an example, but the same applies to the second element 302.

  As shown in FIG. 13, the largest dimension in the front-rear direction of the head 301a of the first element 301 is L, the deviation is a, and the smallest dimension in the front-rear direction of the neck 301b is b. The dimension L in the front-rear direction can be paraphrased as a dimension along the first direction or a dimension along the second direction. Here, the dimensions of the first head 311a in the first half 311 and the second head 321a in the second half 321 are the same. The first neck 311b and the second neck 321b have the same dimensions.

  In other words, the shift amount a between the first half 311 and the second half 321 of the first element 301 is a dimension in the front-rear direction of the first convex portion 331a and the second convex portion 341a of the first element 301. The amount of deviation a is the same in the front-rear direction dimensions of the first recess 331b and the second recess 341b.

  In order to measure the displacement amount a, the dimension from the front edge of the first head 311a in the first half 311 to the front edge of the second head 321a in the second half 321 or in the second half 321 It is obtained by measuring the dimension from the rear edge of the second head 321a to the rear edge of the first head 311a in the first half 311. Alternatively, the dimension from the front edge of the first neck 311b in the first half 311 to the front edge of the second neck 321b in the second half 321 or the rear end of the second neck 321b in the second half 321 It is obtained by measuring the dimension from the edge to the rear end edge of the first neck 311b in the first half 311.

Table 1 shows the results of a chain strength test performed on two items of lateral pulling strength and thrust strength. FIG. 14 is a graph showing the lateral pulling strength with respect to the amount of deviation in Table 1. FIG. 15 is a graph showing the thrust strength with respect to the amount of deviation in Table 1. Here, the lateral pulling strength indicates the magnitude of resistance when the left and right fastener tapes are pulled at a constant speed in the left and right opposite directions with the fastener chain engaged. Further, the thrust strength indicates the magnitude of resistance when the element is pushed up in a direction perpendicular to the tape surface in a state where the fastener chain is engaged. The unit is [N]. Prepare five fastener chains each with lateral pulling strength and thrust strength, record the magnitude of resistance in each, and represent the maximum (max), minimum (min), and average (Ave).

As shown in FIG. 14, in the fastener chain, the average transverse pulling strength is less than a predetermined reference value 400N when the deviation amounts are 0.1 mm and 0.4 mm. In this case, it cannot be said that the strength is sufficient. Therefore, it is preferable that the shift amount a of the fastener chain satisfies the following expression (1).
0.2 ≦ a ≦ 0.3 (1)

Further, the ratio of the shift amount a to the dimension L of the head portion 301a of the first element 301 may be defined. In this case, it is preferable that the following expression (2) is satisfied.
9% ≦ a / L ≦ 15% (2)

  More preferably, 9.6% ≦ a / L ≦ 14.4% is satisfied.

  If this formula is less than 9%, the transverse pulling strength and the thrust strength are not sufficiently obtained, and if it is more than 15%, sliding resistance in meshing and separation increases. Here, the cause of the increase in sliding resistance is, for example, when the slider is separated inside the slider, the left and right elements are in a posture of tilting so that the front opening side of the slider is separated in the vertical direction from the engaged state. Therefore, if a / L is large, it is necessary to change the posture greatly and incline to separate, so that the sliding resistance increases. When meshing, the left and right elements in the separated state change their posture from the inclined state to the horizontal as they move from the front opening side to the rear opening side, so that the sliding resistance is the same as when separating. growing.

  In this embodiment, L may be 2.1 mm. For reference, the dimension (width) b in the front-rear direction of the neck portion of the present embodiment is 1.2 mm.

  Table 2 shows the sliding resistance when the slide fastener is separated. Table 3 shows the sliding resistance when the slide fastener is engaged. FIG. 16 is a graph showing the sliding resistance at the time of separation with respect to the amount of deviation shown in Table 2. FIG. 17 is a graph showing the sliding resistance at the time of meshing with respect to the amount of deviation shown in Table 3. Here, the sliding resistance at the time of engagement represents the magnitude of the resistance when the slider fastener of the slide fastener is pulled and moved in the direction in which the slide fastener is engaged, and the sliding resistance at the time of separation is the sliding resistance of the slide fastener. Represents the magnitude of resistance when the slider pull is pulled and the slide fastener is moved in the separating direction.

  In the table, the 0.2 mm second direction is a case where the element displacement amount a is 0.2 mm and the first half 311 is displaced rearward (second direction) with respect to the second half 321. The direction is the case where the element displacement amount a is 0.2 mm and the first half 311 is displaced forward (first direction) with respect to the second half 321, and the 0.3 mm second direction is the element displacement amount. This is the case where a is 0.3 mm and the first half 311 is displaced rearward (second direction) with respect to the second half 321. The first direction is 0.3 mm, and the element a displacement amount a is 0.3 mm. This is a case where the first half 311 is displaced forward (first direction) with respect to the second half 321. The unit is [N].

Table 2 shows the magnitude of the resistance of the slider when the slider slide fastener in the engaged state is separated by the slider, and prepares five slide fasteners and shows the magnitude of the resistance when sliding the slider. Record and represent maximum (max), minimum (min), and average (Ave).

Table 3 shows the magnitude of the resistance of the slider when the slider slide fastener in the separated state is meshed with the slider. Prepare the five slide fasteners and the magnitude of the resistance when sliding the slider. Record and represent maximum (max), minimum (min), and average (Ave).

  As shown in FIGS. 16 and 17, in the case of the same displacement amount of 0.2 mm or 0.3 mm, the first half 311 of the first element 301 shown in FIG. The sliding resistance of the slide fastener that is displaced in one direction) is such that the first half 311 of the first element 301 is displaced rearward (second direction) with respect to the second half 321. Smaller than sliding resistance. In other words, when the amount of displacement is the same, the slide fastener in which the first half 311 of the first element 301 is displaced in the forward direction (first direction) with respect to the second half 321 is the first fastener of the first element 301. The half part 311 can be slid more smoothly than the slide fastener in which the half part 311 is displaced rearward (second direction) with respect to the second half part 321. As described above, the same result is obtained for the second element 302.

  Thus, according to the slide fastener 1 of the present embodiment, the pair of fastener tapes 21 and 22 and the pair of fastener tapes 21 and 22 having the upper surfaces 21a and 22a and the lower surfaces 21b and 22b on the opposite side of the upper surfaces 21a and 22a. A fastener chain in which a pair of fastener stringers 11 and 12 each having an element row composed of a plurality of elements 301 and 302 fixed to the respective edge portions 23 at predetermined pitches are arranged so that the element rows 31 and 32 face each other. 10 is connected to the upper wing plate 61 disposed on the upper surface 21a, 22a side, and the lower wing plate 62, the upper wing plate 61, and the lower wing plate 62 disposed on the lower surface 21b, 22b side. A first front port 67 for entering and exiting one element row 31 and a second element row 3 provided on the lower surface side of the first front port 67 A front end wall having a second front port 68 for entering and exiting, and a single rear port 70 for entering and exiting a pair of meshed element rows for meshing or separating each of the element rows 31 and 32 And a movable slider 6. In the front end wall, the second front port 68 has a step in the vertical direction with respect to the first front port 67 and is provided below the first front port 67. The elements 301 and 302 have bases 301c and 302c fixed to the fastener tape 2 and heads 301a and 302a that protrude from the bases 301c and 302c and mesh with the opposing elements 301 and 302, respectively. The heads 301a and 302a include first heads 311a and 312a disposed on the upper surfaces 21a and 22a, and second heads 321a and 322a disposed on the lower surfaces 21b and 22b of the fastener tapes 21 and 22, respectively. The first heads 311a and 312a are formed so as to be shifted from the second heads 321a and 322a in the first direction in which the slider 6 is moved when the element rows 31 and 32 are engaged with each other. Slide for easily engaging and separating the element rows 31 and 32 with the upper and lower meshing slider 6 It is possible to provide a Asuna.

  Further, according to the slide fastener 1 of the present embodiment, the elements 301 and 302 are arranged between the base portions 301c and 302c and the head portions 301a and 302a in the front-rear direction than the base portions 301c and 302c and the head portions 301a and 302a. Neck portions 301b and 302b having a small width as dimensions are provided. The neck portions 301b and 302b of the elements 301 and 302 include first neck portions 311b and 312b arranged on the lower surfaces 21a and 22a side, and lower surfaces 21b and 10b of the fastener tape 20, respectively. 2nd neck part 321b, 322b arrange | positioned at 22b side, and the 1st neck part 311b, 312b is the 1st direction when engaging each element row | line | column 31, 32 rather than 2nd neck part 321b, 322b. To provide a slide fastener that is formed in a shifted manner so that it can be more easily and stably engaged and separated. It can become.

  Moreover, according to the slide fastener 1 of this embodiment, each element 301,302 is formed with first convex portions 331a, 332a on the first direction side on the lower surfaces 21b, 22b side of the first heads 311a, 312a, First recesses 331b and 332b are formed on the first direction side of the lower surfaces 21b and 22b of the first neck portions 311b and 312b, and the first heads 321a and 322a are opposite to the first direction on the upper surfaces 21a and 22a side. Second convex portions 341a and 342a are formed on the two direction sides, and second concave portions 341b and 342b are formed on the second direction side opposite to the first direction on the upper surfaces 21a and 22a of the second neck portions 321b and 322b, When the pair of fastener stringers are engaged, the first convex portions 331a and 332a of the one element 301 and 302 are the second concave portions 341b of the opposing elements 301 and 302, 42b, and the first concave portions 331b and 332b of one element 301 and 302 are engaged with the second convex portions 341a and 342a of the opposing elements 301 and 302, so that the slide can be stably engaged and separated. A fastener can be provided.

  Further, according to the slide fastener 1 of the present embodiment, the shifted amount a of the first heads 311a and 312a with respect to the second heads 321a and 322a is 0.2 mm or more and 0.3 mm or less, and the elements 301 and 302 The ratio a / L of the displacement amount a to the dimension L along the first direction of the heads 301a, 302a is 9% or more and 15% or less, so that the strength required for the fastener is sufficient and the sliding resistance is small. The fastener 1 can be obtained. If it is less than 9%, sufficient strength cannot be obtained, and if it is more than 15%, sliding resistance increases.

  Although various embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and embodiments configured by appropriately combining the configurations of the respective embodiments also fall within the scope of the present invention. Is.

301 ... 1st element 302 ... 2nd element 301a, 302a ... Head part 301b, 302b ... Neck part 301c, 302c ... Base part 311, 312 ... 1st half part 311a, 312a ... 1st head part 311b, 312b ... 1st neck part 311c , 312c ... 1st base part 321, 322 ... 2nd half part 321a, 322a ... 2nd head part 321b, 322b ... 2nd neck part 321c, 322c ... 2nd base part 331a, 332a ... 1st convex part 331b, 332b ... 1st Recessed parts 331c, 332c ... 1st step part 341a, 342a ... 2nd convex part 341b, 342b ... 2nd recessed part 341c, 342c ... 2nd step part 6 ... Slider 1 ... Slide fastener

Claims (4)

Each of the pair of fastener tapes (21, 22) and the pair of fastener tapes (21, 22) having the upper surface (21a, 22a) and the lower surface (21b, 22b) on the opposite side of the upper surface (21a, 22a) Each element row (31, 32) has a pair of fastener stringers (11, 12) having an element row composed of a plurality of elements (301, 302) fixed to the edges (231, 232) at a predetermined pitch. Fastener chains (10) arranged to face each other,
Upper wing plate (61) arranged on the upper surface (21a, 22a) side, lower wing plate (62) arranged on the lower surface (21b, 22b) side, upper wing plate (61) and lower wing plate (62) and the second element row (32) provided on the lower surface side of the first front port (67) and the first front port (67) for the first element row (31) to enter and exit. ) Has a front end wall having a second front port (68) for entering and exiting, and one rear port (70) for entering and exiting the pair of meshed element rows (31, 32),
A slider (6) that can be moved in a first direction that moves when meshing the element rows (31, 32) and a second direction that moves when separated in a direction opposite to the first direction. )When,
With
Each element (301, 302) protrudes from the base (301c, 302c) fixed to the fastener tape (21, 22) and the base (301c, 302c) and meshes with the opposing element (301, 302). Each having a head (301a, 302a),
The head (301a, 302a) of each element (301, 302) includes a first head (311a, 312a) disposed on the upper surface (21a, 22a) side and the fastener tape (21, 22). A second head (321a, 322a) disposed on the lower surface (21b, 22b) side of
The slide fastener (1), wherein the first head (311a, 312a) is formed to be shifted in the first direction with respect to the second head (321a, 322a). Each element (301, 302) is wider than the base (301c, 302c) and the head (301a, 302a) between the base (301c, 302c) and the head (301a, 302a). With a small neck (301b, 302b)
The neck portions (301b, 302b) of the respective elements (301, 302) include a first neck portion (311b, 312b) arranged on the upper surface (21a, 22a) side and the fastener tape (21, 22). A second neck (321b, 322b) disposed on the lower surface (22a, 22b) side,
The slide fastener (1) according to claim 1, wherein the first neck portion (311b, 312b) is formed to be shifted in the first direction from the second neck portion (321b, 322b). Each of the elements (301, 302)
A first protrusion (331a, 332a) is formed on the first direction side of the first head (311a, 312a),
A first recess (331b, 332b) is formed on the first direction side of the first neck (311b, 312b),
Second convex portions (341a, 342a) are formed on the second direction side of the second head (321a, 322a),
A second recess (341b, 342b) is formed on the second direction side of the second neck (321b, 322b),
When the pair of fastener stringers are engaged, the first convex portion (331a) of one element (301) is engaged with the second concave portion (342b) of the opposing element (302),
The slide fastener (1) according to claim 2, wherein the first concave portion (331b) of one element (301) is engaged with the second convex portion (342a) of the opposing element (302). . The displacement amount (a) of the first head (311a, 312a) with respect to the second head (321a, 322a) is 0.2 mm or more and 0.3 mm or less,
And the ratio (a / L) of the shift amount (a) with respect to the dimension (L) along the first direction of the head (301a, 302a) of the element (301, 302) is 9% or more and 15% or less. The slide fastener (1) according to any one of claims 1 to 3, wherein the slide fastener (1) is provided.

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