TWI543721B - Zipper - Google Patents

Description

zipper

The present invention relates to a slide fastener having a slider for a pair of support shaft connecting tabs projecting from left and right side faces of an upper portion of the slider main body.

In the slider of the zipper, a slider is generally formed on the upper surface of the slider main body via a tab mounting portion. However, this configuration is such that the tab attachment portion is disposed on the upper surface of the slider main body, and therefore, the thickness of the slider is correspondingly thick. Therefore, as a so-called thin slider for the purpose of making the thickness of the slider thinner, the pair of support shafts protrude from the left and right side surfaces of the upper portion of the slider main body, and the pull tabs are connected to the pair of support shafts (Patent Document 1) ). Further, the slider of the thin slider includes a pair of arms having an annular portion that is inserted into the support shaft at one end, and a pull tab body that couples the pair of arms at the other end.

Prior technical literature Patent literature

Patent Document 1: International Publication No. 2011/1500

In addition, the outer surface of the annular portion is an arc-shaped outer surface on the opposite side of the tab body, and the tab does not contact the chain cloth at a specific angle (a rotation angle of approximately 180 degrees). And rotate. Therefore, there is a possibility that the pull tab is accidentally rotated for some reason. Because of the unexpected rotation of the pull tab, the sound is generated, which sometimes makes the user feel uncomfortable.

The present invention is a creator considering the above actual situation, and its purpose is to provide a provable A zipper that prevents the slider of the slider from rotating unexpectedly.

The zipper of the present invention comprises: a pair of zipper chain belts, comprising a pair of chain slats extending forward and backward and arranged side by side, and a pair of sprocket rows fixed to a lower surface of the left and right side edge portions of the opposite pair of chain cloths And a slider comprising a slider body moving along a pair of chain rows, one of a pair of right and left sides protruding from an upper portion of the slider body located above the pair of chain cloths, and a rotatably Support for a pair of fulcrum pull tabs. Further, the pull tab includes: a pair of arms equally supporting one end portion of the slider body rotatably supported by the pair of support shafts; and a pull tab body connecting the other end portions of the pair of arms. Further, the one end portion of each arm is provided with a contact surface that can contact the upper surface of the chain cloth. Further, the contact surface is separated from the upper surface of the fastener fabric in a reference state in which the pull tab is parallel with respect to the fastener fabric, and is in contact with the upper surface of the fastener fabric in a first inclined state in which the pull tab is inclined with respect to the fastener fabric.

Further, in the first inclined state, the chain cloth is deformed by the contact surface. If the external force required for the deformation of the chain cloth is large, it is difficult to rotate the pull tab according to the intention of the user. On the other hand, if the force required for the deformation of the chain cloth is small, it is difficult to prevent the pull tab from being accidentally rotated. For example, if the front end of each flange is located further rearward than the rear end of the support shaft in the reference state, the external force required for the deformation of the chain cloth becomes very small. Therefore, in order to prevent the tab from being accidentally rotated, it is desirable to set it as follows.

That is, the slider body includes: an upper blade that is located above the pair of chain rows above the pair of chain pieces; a lower blade that is located below the pair of chain rows; and a pair of flanges Waiting upward from the left and right side edges of the lower wing; and in the reference state, the front ends of the pair of flanges are located at the corresponding sides of the left and right at a position coincident with the rear end of the support shaft, or at the rear end of the support shaft More on the front.

Further, when the front end of the pair of flanges in the reference state is located further forward than the rear end of the support shaft, if it is excessively located in front, the pair of fastener elements are arranged in the slider. When the front part of the main body is separated by a zipper, it is difficult for a pair of chain teeth to slide in and out. Inside the body of the piece. In order to prevent the above, it is desirable to set it as follows.

That is, in the reference state, the pair of flange front ends are disposed between the front end of the arm and the rear end of the support shaft on the side corresponding to the left and right.

According to the zipper of the present invention, the pull-down piece is separated from the upper surface of the chain cloth in the reference state, and one end of the arm of the pull-down piece in the first inclined state contacts the upper surface of the chain cloth with the contact surface thereof, thereby preventing the tab from being accidentally rotated. .

Moreover, according to the following zipper, the external force required for the deformation of the chain cloth can be a moderate force, and the pull tab can be easily rotated according to the intention of the user. The zipper has the slider main body: upper wing a pair of chain cloths on the upper side of the pair of chain rows; a lower wing plate on the lower side of the pair of chain rows; and a pair of flanges, such as from the left and right side edges of the lower wing Projecting upward; and in the reference state, the pair of flanges at the front end on the left and right sides are located at a position coincident with the rear end of the fulcrum or more forward than the rear end of the fulcrum.

Further, if the pair of flange front ends are disposed on the side corresponding to the left and right sides in the reference state, and the slider between the front end of the arm and the rear end of the support shaft, the external force required for the deformation of the chain cloth can be moderate. Force, and a pair of sprocket rows are easily inserted into the front portion of the slider body.

1‧‧‧ zipper

2‧‧‧Zipper chain

3‧‧‧Sliding parts

4‧‧‧Slider body

5‧‧‧ Support shaft

5a‧‧‧Upper surface

5D‧‧‧The shortest distance between the center of the fulcrum and the upper surface of the flange

The shortest distance between the center of the 5L‧‧‧ shaft and the upper surface of the chain fabric

6‧‧‧ Pulling

6A‧‧‧1st face

6B‧‧‧2nd corner

6C‧‧‧ opposite

6D‧‧‧lower surface

6F‧‧‧ front surface

6P‧‧‧ contact surface

6U‧‧‧ upper surface

21‧‧‧Chain

22‧‧‧Chain row

22a‧‧‧ sprocket

23‧‧‧Front stop

24‧‧‧Aft stop

41‧‧‧Upper wing

41a‧‧‧Before

41b‧‧‧ behind

41c‧‧‧Left side

41d‧‧‧ right side

41w‧‧‧Width

42‧‧‧lower wing

42a‧‧‧Before

42b‧‧‧ behind

42c‧‧‧left side

42d‧‧‧ right side

42w‧‧‧Width

43‧‧‧ Linked Column

44‧‧‧Flange

45‧‧‧ sprocket path

46‧‧‧Chain groove

61‧‧‧ Pull film body

62‧‧‧arm

63‧‧‧Rings

63a‧‧ hole

64‧‧‧Contacts

Fig. 1 is a perspective view showing a slider used in a slide fastener according to a first embodiment of the present invention.

Fig. 2 is a plan view showing the slide fastener of the first embodiment.

Fig. 3 is a bottom view showing the slide fastener of the first embodiment.

Fig. 4 is a plan view showing a slider used in the slide fastener of the first embodiment.

Figure 5 is a side elevational view of the slider of Figure 4 as seen from the left.

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

Fig. 7 is a side view showing a state in which the slider of the slider of Fig. 5 is brought into contact with the chain cloth in a state of being inclined toward the rear side.

Figure 8 is a side elevational view showing a portion of the slider of Figure 7 in an enlarged manner.

Figure 9 is a cross-sectional view taken along line IX-IX of Figure 8.

Fig. 10 is a side view showing a state in which the slider of the slider is raised in a vertical manner.

Fig. 11 is a side view showing a state in which the slider of the slider is brought into contact with the chain cloth in a state of being inclined toward the front side.

Fig. 12 is a plan view showing a slide fastener according to a second embodiment of the present invention.

Fig. 13 is a side view showing a state in which one of the slide fasteners of the second embodiment is in contact with the link of the slider and the link.

As shown in Fig. 2 and Fig. 3, the slide fastener 1 according to the first embodiment of the present invention includes a pair of fastener chain belts 2, 2 which are extended toward the front and rear and arranged side by side, and a slider 3 which is adjacent to the pair of zippers. The left and right side edges of the opposite sides of the chain belts 2, 2 are moved forward and backward. Further, when the slider 3 is moved forward, the pair of fastener tapes 2, 2 are closed, and when the slider 3 is moved rearward, the pair of fastener tapes 2, 2 are opened. In the following description, the front side refers to the upper side in FIG. 2, and the rear side refers to the lower side in FIG. The right side refers to the right side in FIG. 2 in the direction orthogonal to the front-rear direction, and the left side refers to the left side in FIG. The upper side refers to one of the directions orthogonal to the front-rear direction and the left-right direction (the front side in the direction orthogonal to the paper surface of FIG. 3), and the lower side refers to the direction orthogonal to the front-rear direction and the left-right direction. The other side (the deep side in the direction orthogonal to the plane of the paper of Fig. 2).

The pair of fastener tapes 2, 2 are provided with a pair of chain fabrics 21, 21 which are extended toward the front and rear and arranged side by side; a pair of chain rows 22, 22 which are oriented along the pair of chain fabrics 21, 21 The lower left side edge portion has a lower surface fixed; two front stops 23, which are respectively fixed to the respective link fabrics 21 on the front side of the pair of chain gear rows 22, 22; and a rear stop 24 on the pair of chains The rear sides of the rows of teeth 22, 22 are fixed to a pair of chain fabrics 21, 21, respectively.

Each of the chain fabrics 21 has a thickness that is thin in the vertical direction and is elongated and has a rectangular shape in plan view.

Each of the element rows 22 is formed by a plurality of fastener elements 22a which are arranged at intervals along the lower surface of the right and left side edge portions of the opposite side of the chain cloth 21, and in the present embodiment, the monofilaments are formed as The loop shape and the plurality of fastener elements 22a are formed by continuous loop fastener elements.

If the slider 3 is moved forward in order to close the pair of fastener tapes 2, 2, the sprocket 22a of the pair of sprocket rows 22, 22 are engaged with each other, and the slider 3 is prevented from colliding with the front stopper 23. The slider 3 is further moved forward. Further, when the sliders 3 are moved rearward in order to open the pair of fastener tapes 2, 2, the fastener elements 22a of the pair of fastener element rows 22 and 22 are separated from each other to the left and right, and the slider 3 collides with the rear end. The stop 24 prevents the slider 3 from moving further rearward.

As shown in FIGS. 1 to 9, the slider 3 is provided with a slider main body 4 which is attached so as to be movable forward and backward toward the pair of element rows 22, 22; a pair of support shafts 5, 5, etc. The left and right sides of the upper portion of the main body 4 project laterally; and the pull tab 6 is rotatably supported by the pair of support shafts 5, 5.

The slider body 4 includes an upper blade 41 and a lower blade 42 which are disposed opposite to each other with a space therebetween; and a connecting post 43 which is bridged between the upper blade 41 and the lower blade 42 The intermediate portions in the left-right direction and the four flanges 44, 44, ..., and the like protrude from the left and right side edge portions of both the upper blade 41 and the lower blade 42 toward the upper and lower opposing sides. Further, inside the slider main body 4, a fastener passage 45 through which the pair of fastener rows 22 and 22 pass, and a pair of fasteners 21, 21 pass through the pair of fastener grooves 46, 46 are formed.

The upper blade 41 is such that the upper surface and the lower surface are flat surfaces having no irregularities. Moreover, as shown in FIG. 4, the shape of the upper blade 41 is a bilaterally symmetrical shape in planar view, and the front side 41a and the back side 41b are the linear shape parallel with the left-right direction. Incidentally, the front end surface of the upper blade 41 including the front side 41a is a vertical plane parallel to the vertical direction. Further, the left and right side edges 41c and 41d of the upper blade 41 have a shape that protrudes in an arc shape. Further, the width of the upper blade 41 in the left-right direction is the largest in the front-rear direction, and the position of the support shafts 5, 5 is the largest, that is, larger than the entire length of the front side 41a and the entire length of the rear side 41b. Further, in Fig. 6, the upper blade 41 and the pair of support shafts 5, 5 are indicated by broken lines.

The lower blade 42 is also such that the upper surface and the lower surface are flat surfaces having no irregularities. Further, as shown in FIG. 6, the shape of the lower blade 42 is also a bilaterally symmetrical shape in plan view. However, the shape of the lower wing 42 and the upper wing 41 are different. More specifically, the front edge 42a of the lower blade 42 (corresponding to the width of the front edge 41a of the upper blade 41) is formed in a shape that protrudes in an arc shape toward the intermediate portion in the left-right direction. The rear edge 42b of the lower blade 42 is linearly parallel to the left-right direction, and the shapes of the left and right side edges 42c, 42d of the lower blade 42 are set to correspond to the positions of the pair of pivots 5, 5 from the front-rear direction. A shape that protrudes in an arc shape toward the intermediate portion in the left-right direction toward the front side of the pair of support shafts 5 and 5, and is gradually moved toward the left and right direction as the position from the pair of support shafts 5 and 5 is rearward. The middle portion has a shape that is concave in an arc shape.

As shown in Fig. 9, the upper and lower flanges 44 of the upper side projecting downward from the upper blade 41 are smaller in size than the upper and lower flanges 44 of the lower side of the lower blade 42. Further, in the front-rear direction, the flanges 44 are formed in the same range, and the front ends of the respective flanges 44 substantially coincide with the front ends of the pair of support shafts. Further, the left and right flanges 44, 44 of the lower side cover the left and right sides of the pair of element rows 22, 22.

As described above, the two flanges 44 and 44 and the upper blade 41 are located above the pair of chain fabrics 21 as shown in Fig. 9. In the present embodiment, the upper portion of the slider body 4 includes the upper sides. The two flanges 44, 44 and the upper wing 41. Further, the two flanges 44 and 44 and the lower blade 42 on the lower side are located below the pair of chain fabrics 21 and 21, and in the present embodiment, the lower portion of the slider body 4 includes the lower sides. Two flanges 44, 44 and a lower wing 42. Further, the upper portion and the lower portion of the connecting slider main body 4 are connected to the connecting post 43 at the intermediate portion of the slider main body 4. Further, the left and right side faces of the upper two flanges 44 are perpendicular to the left and right side faces of the upper blade 41, and the left and right sides of the lower two flanges 44 are also the left and right sides of the lower blade 42. The vertical plane of the same plane. Further, at a position of the pair of support shafts 5, 5, the width 41w of the upper portion of the upper portion of the slider main body 4 is formed smaller than the width 42w of the lower portion of the slider main body 4 in the left-right direction. Further, the left side surface of the lower portion of the slider main body 4 is located on the left side of the upper side of the upper portion of the slider main body 4, and the right side surface of the lower portion of the slider main body 4 is located at the lower slider. The right side surface of the upper portion of the main body 4 is further to the right side, and therefore, the left and right side faces of the lower side flanges 44, 44 are located directly below the support shaft 5 on the right and left sides.

As shown in Fig. 6 and Fig. 9, the element tooth passages 45 are spaced apart from the outside by the upper and lower blades 41 and 42 on the upper and lower sides, and are separated from the outside by the four flanges 44, 44, ... on the right and left sides. Space and space that penetrates in the front-rear direction. Further, the rear portion of the element tooth passage 45 is linearly extended, and one of the meshing passages 45 at the rear end of the element tooth passage 45 passes through the element tooth rows 22 and 22. On the other hand, the front portion of the element tooth passage 45 is branched to the left and right by the coupling post 43 in the left and right directions, and one of the front ends of the element tooth passages 45 is separated from the element rows 22 and 22.

As shown in FIG. 5 and FIG. 9, each of the chain grooves 46 is a portion in which the distance between the upper and lower side edges of the upper and lower blades 41 and 42 is narrowed, and is formed on the upper and lower flanges. The space between 44 and 44. The left and right chain grooves 46, 46 communicate with the left and right of the element path 45. Further, the length of the upper flange 44 protruding downward is shorter than the length of the lower flange 44 protruding upward.

As shown in Fig. 6 and Fig. 9, the pair of support shafts 5 and 5 project laterally from the left and right side faces of the upper blade 41 in the rear direction, and are arranged in a straight line in the left-right direction. Each of the support shafts 5 is a rod of a circular shape. More specifically, each of the support shafts 5 has a base portion (a portion on the side of the upper blade 41) having a circular shape, and the front portion thereof is gradually tapered toward the front end, and further, the front lower surface is maintained. The shape parallel to the surface of the chain cloth 21 (horizontal), and the front upper surface 5a has a shape inclined downward toward the front end.

As shown in FIG. 4, the pull tab 6 is provided with a pair of arms 62, 62 which are spaced apart from the left-right direction and rotatably supported at one end, and a pull-tab body 61 which connects the pair of arms 62, 62 to the left and right. The other end. The other end portions of the pair of arms 62 and 62 refer to a portion in which the pair of arms 62 and 62 are formed in a direction in which one of the holes 63a is formed symmetrically (opposite side) with respect to one end of each of the arms 62 and 62. Further, as shown in the figure, the handle main body 61 is connected to the other end portion of each of the arms 62. Therefore, the end surface (front end surface) of one end of each arm 62 is not formed at the other end portion of each arm 62.

As shown in FIG. 4 and FIG. 5, each arm 62 is provided with an annular portion 63 and a contact portion 64 at one end portion opposite to the handle main body 61, and the annular portion 63 is inserted into the left and right support shafts 5, 5. The support shaft 5 (hereinafter, simply referred to as "support shaft") on the corresponding side, and away from the corresponding side of the left and right chain fabrics 21, 21 (hereinafter, simply referred to as "chain cloth"), the contact portion 64 The annular portion 63 is extended toward the opposite side from the tab body 61 and is in contact with the chain cloth 21.

The annular portion 63 is formed with a hole 63a penetrating in the left-right direction, and the diameter of the hole 63a is formed to be slightly larger than the diameter of the support shaft 5, that is, a margin for rotation is formed in the support shaft 5 and the hole 63a. Further, even if the contact portion 64 is in contact with the chain cloth 21, the annular portion 63 (tab 6) hardly moves (only in the amount of margin) upward with respect to the support shaft 5 to maintain the contact state thereof. It will be described below.

The annular portion 63 is located on the inner side in the radial direction with respect to an imaginary circle having a radius of the shortest distance 5L from the center of the support shaft 5 and the upper surface of the fastener fabric 21. On the other hand, the contact portion 64 is a portion that is away from the center of the support shaft 5 in the radial direction by an imaginary circle having a radius of the shortest distance 5L from the center of the support shaft 5 and the upper surface of the chain cloth 21.

It is assumed that the pull-tab body 61 is held to the rear side with respect to the support shaft 5 and the state in which the pull-tab 6 (arm 62) is parallel with respect to the chain cloth 21 is a reference state. In the reference state, the opposing surface 6C of the end portion of the arm 62 that faces the upper blade 41 is inclined as it is toward the outer side in the left-right direction as it goes further toward the hole 63a as shown in FIG. surface. Further, the front end portion of the inclined surface of the facing surface 6C is located on the outer side of the upper portion of the slider main body 4 as shown in FIG. Further, in the reference state, one end portion of the arm 62 is formed as follows, as shown in FIG. 5, in such a manner that the lower surface 6D, the front surface 6F, the upper surface 6U, the front surface 6F, and the lower surface 6D are formed in the following manner (hereinafter, It is the "1st corner surface" 6A, the front surface 6F, and the angle surface of the upper surface 6U (it is hereafter called "2nd angle surface") 6B.

The lower end surface 6D of one end of the arm 62 is a surface that is separated from the chain cloth 21, and is a surface substantially parallel to the front-rear direction. Further, the upper surface 6U of one end portion of the arm 62 is an inclined surface that gradually descends toward the front. Moreover, the lower surface 6D and the upper surface of one end of the arm 62 Each of 6U has a distance in the radial direction from the center of the support shaft 5 shorter than the shortest distance 5L from the center of the support shaft 5 to the upper surface of the chain fabric 21. Therefore, the lower surface 6D and the upper surface 6U of one end of the arm 62 are attached to the surface of the range of the rotation angle of the arm 62 (a range of approximately 180 degrees) which is not in contact with the chain cloth 21.

On the other hand, the front end surface 6F, the first angular surface 6A, and the second angular surface 6B of one end of the arm 62 are such that the distance from the center of the support shaft 5 in the radial direction is longer than the center of the support shaft 5 to the link 21 The shortest distance from the upper surface is 5L. Further, one end portion of the arm 62, the front surface 6F, the first corner surface 6A, and the second corner surface 6B are not in contact with the chain cloth 21 in the reference state, and the tab 6 is inclined at a specific angle or orthogonal to the chain cloth 21. In the case of the surface in contact with the chain cloth 21. Therefore, in the present embodiment, the contact surface 6P which can contact the upper surface of the fastener fabric 21 includes the one end portion front surface 6F of the arm 62, the first angular surface 6A, and the second angular surface 6B.

The front surface 6F of one end portion of the arm 62 is a plane substantially parallel to the vertical direction, and more specifically, an inclined surface that faces rearward as it goes downward.

Further, each of the first angular surface 6A and the second angular surface 6B has a shape that is convex in an arc shape. Further, the radius of the arc of the second angular surface 6B is formed larger than the radius of the arc of the first angular surface 6A. The front end of the first angular surface 6A exists at a position farther from the center of the support shaft 5 than the rear end of the first angular surface 6A. Further, the front end of the second corner surface 6B exists at a position farther from the center of the support shaft 5 than the rear end of the second corner surface 6B. Further, the rear end of the first angular surface 6A is present at a position farther from the center of the support shaft 5 than the rear end of the second angular surface 6B. Further, the front end of the first corner surface 6A and the front end of the second corner surface 6B are located at the same distance from the center of the support shaft 5. Further, the entire length of the arc of the second corner surface 6B and the entire length of the inclined surface of the front end surface 6F of the arm 62 are formed longer than the arc length of the first angular surface 6A.

The pull tab 6 having such a contact surface 6P can be rotated as in the following (1) to (4).

(1) If the pull tab 6 is slightly rotated in one direction from the upper surface of the chain fabric 21 with respect to the reference state of Fig. 5, the pull tab body 61 is held on one side as shown in Figs. 7 and 8 a state in which the back side of the back side is inclined at a specific angle with respect to the chain cloth 21 (hereinafter, referred to as In the "first inclined state", the first corner surface 6A is in contact with the chain cloth 21. Further, as shown in Fig. 7 and Fig. 8, the distance between the first angular surface 6A and the upper surface of the upper surface of the flange 44 becomes smaller as it becomes the first inclined state from the reference state. At this time, the upper surface of the chain fabric 21 is deformed so as to be recessed in an arc shape along the first angular surface 6A. Incidentally, as described above, the front end of the first angular surface 6A exists at a position farther from the center of the support shaft 5 than the rear end of the first angular surface 6A, and therefore, along the arc length of the first angular surface 6A The range is such that the pull tab 6 is rotated in the above-described one direction, and the external force required for the deformation of the chain cloth 21 is increased. In this way, the tab 6 is prevented from accidentally rotating.

Further, in the above-mentioned reference state, the front ends of the respective flanges 44 are located on the left and right corresponding sides, which are located further forward than the rear end of the support shaft 5, and as shown in FIG. 9, one of the support shafts 5 in the front-rear direction At the position of 5, the width 41w of the upper portion of the slider main body 4 is smaller than the width 42w of the lower portion of the slider main body 4, and the left and right sides of the lower flanges 44, 44 are located directly below the pair of support shafts 5, 5. Thereby, the front end of the flanges 44, 44 on the lower side is located closer to the rear side than the pair of support shafts 5, 5 (the rear ends of the pair of support shafts 5, 5), and can be increased in the first inclined state. The deformation of the lower chain cloth 21 requires an external force and, therefore, is suitable for further preventing accidental rotation.

Further, the front end of each flange 44 is disposed between the front end of the arm 62 and the rear end of the support shaft 5 (more specifically, the center) on the side corresponding to the right and left, and therefore, in addition to preventing accidental rotation, a pair of chains The rows of teeth 22, 22 are easily inserted into the front portion of the slider body 4. Further, in the reference state, the width of the upper wing 41 is smaller than the width of the lower wing 42 in the position of the pair of fulcrums 5, 5 in the front-rear direction, and the left and right sides of the lower flanges 44, 44 are located. The pair of support shafts 5, 5 are directly below, so that the width of the slider 3 in the left-right direction can be suppressed.

Further, since each of the arms 62 is inserted into one of the pair of support shafts 5 and 5 as described above, the configuration in which the position of the contact surface 6P of each arm 62 in the left-right direction is closer to the lower flanges 44 and 44 can be employed. With this configuration, the contact surface 6P is away from the lower flanges 44 and 44 (the left and right sides of the lower flanges 44 and 44 are located on the left and right sides of the upper side flanges 44 and 44. In contrast to the case of the inner side of the direction, the external force required for the deformation of the chain cloth 21 can be increased, thereby being adapted to further prevent accidental rotation.

(2) Further, the handle main body 61 is rotated in the above-described direction so as to be farthest from the chain cloth 21 with respect to the first inclined state, and the pull tab 6 (the pair of arms 62, 62) is opposed to the one shown in Fig. 10 The front surface 6F is in contact with the chain cloth 21 in a state in which the chain cloth 21 is orthogonal to each other (hereinafter referred to as "orthogonal state"). Further, as shown in Fig. 10, the interval between the first angular surface 6A and the upper surface of the upper surface of the flange is smaller than the interval between the first inclined state (the state shown in Fig. 8). At this time, the front surface 6F is in a state of being inclined upward as it goes rearward. Further, the entire length of the front surface 6F of the end portion of the arm 62 is formed longer than the arc length of the first angular surface 6A. Therefore, the upper surface of the chain cloth 21 is slightly larger than the first inclined state. The way of the depression is deformed. At this time, the front surface 6F of one end of the arm 62 is as shown in FIG. 10, and is located lower than the upper surface of the flange 44. That is, the front end surface 6F of one end of the arm 62 is radially outward from the center of the support shaft 5 at an imaginary circle having a radius of the shortest distance 5D between the center of the support shaft 5 and the upper surface of the flange 44.

(3) a state in which the pull tab 6 is further rotated in the above-described direction with respect to the orthogonal state, and the pull tab body 61 is held at the front side while the pull tab 6 is held at a certain angle with respect to the chain fabric 21 as shown in FIG. Hereinafter, the second angle surface 6B is in contact with the chain cloth 21 in the "second tilt state". Further, as shown in Fig. 11, the distance between the second angled surface 6B and the upper surface of the upper surface of the flange 44 becomes larger as the self-orthogonal state becomes the second inclined state, but the interval between the second inclined states is smaller than The following is the interval in which the tab body 61 is located on the front side and in a state of being parallel with respect to the chain cloth 21. At this time, the arc length of the second corner surface 6B is also formed longer than the arc length of the first corner surface 6A. Therefore, the upper surface of the chain fabric 21 is slightly larger than the first inclined state. The way is deformed. Incidentally, as described above, the front end of the second angular surface 6B exists at a position farther from the center of the support shaft 5 than the rear end of the second angular surface 6B, and therefore, as the pull tab 6 is rotated in the above-described one direction, The external force required for the deformation of the chain cloth 21 is reduced. In other words, the slider main body 61 is rotated from the orthogonal state toward the front side, and the slider main body 61 can be rotated by a small force from the orthogonal state to the rear side.

(4) if the pull tab 6 is further rotated in the one direction with respect to the second tilt state, Although not shown, the handle piece 61 may be held on the front side while the pull tab 6 is parallel to the chain cloth 21. At this time, the upper surface 6U of one end portion of the handle body 61 is separated from the upper surface of the fastener fabric 21. Further, when the tab main body 61 is held on the front side from the state, the tab main body 461 is rotated in the direction opposite to the one direction in the direction away from the fastener fabric 21, and then in the second tilt state, The 2 corner faces 6B are in contact with the chain cloth 21. The outer force of the chain cloth 21 due to the contact is formed by the length of the arc of the second corner surface 6B being longer, and may be smaller than the force of the pair of chain cloths 21 caused by the contact with the first corner surface 6A. The rotation from the second tilt state to the orthogonal state can be performed by rotating the light from the first tilt state to the orthogonal state.

As shown in Fig. 12, the slide fastener 1 according to the second embodiment of the present invention includes a pair of fastener tapes 2, 2, and two sliders 3, 3 so that the front ends of the two sliders 3, 3 face each other. In the state, the two sliders 3, 3 are attached to the pair of fastener tapes 2, 2. Incidentally, each of the fastener stringer 2 and each of the sliders 3 has the same configuration as that of the user in the first embodiment.

When the two sliders 3 and 3 are moved in the forward direction and the two sliders 3 and 3 collide, as shown in FIG. 13, the front end of the slider 3 is in contact with each other. Further, the front side 41a of the upper wing 41 of each of the sliders 3 and 3 is linearly parallel to the left-right direction, and the front end surface of the front side 41a is a vertical plane parallel to the vertical direction. Therefore, it is easy to maintain the front end surface of the slider 3. The state of collision with each other. Even if the zipper 1 applies a rotational force to the pull tab for some reason, the pull tabs are only in the first tilted state, thereby preventing accidental rotation.

The present invention is not limited to the above-described embodiments, and can be appropriately modified without departing from the spirit and scope of the invention. For example, in the above embodiment, the upper flanges 44 and 44 constitute the elements of the slider body 4. Therefore, the upper portion of the slider body 4 includes the upper blade 41 and the upper flanges 44 and 44, but is not limited thereto. Here, the upper flanges 44, 44 may not be provided in the slider body 4, and in this case, the upper portion of the slider body 4 includes only the upper blade 41.

Further, in the above-described embodiment, in the reference state, the front end of each of the flanges 44 is located further forward than the rear end of the support shaft 5 on the right and left sides, but may be after the support shaft 5 The position of the end is consistent.

Further, the chain cloth 21 may be formed by attaching a resin film to the entire upper surface thereof.

3‧‧‧Sliding parts

4‧‧‧Slider body

5‧‧‧ Support shaft

6‧‧‧ Pulling

6D‧‧‧lower surface

6F‧‧‧ front surface

6U‧‧‧ upper surface

41‧‧‧Upper wing

42‧‧‧lower wing

43‧‧‧ Linked Column

61‧‧‧ Pull film body

62‧‧‧arm

Claims (3)

A zipper, characterized by comprising: a pair of zipper chain belts (2, 2) comprising a pair of chain cloths (21, 21) extending forward and backward and arranged left and right, and being fixed to a pair of said chain cloths (21, 21) a pair of chain rows (22, 22) opposite the left and right side edge portions; and a slider (3) including a slider moving along a pair of the aforementioned chain rows (22, 22) The main body (4) protrudes from the left and right sides of the upper portion of the slider main body (4) located above the pair of the above-mentioned chain fabrics (21, 21), and supports the support shafts (5, 5) and rotatably a pair of pull tabs (6) of the above-mentioned support shafts (5, 5); the pull tabs (6) are provided with: a pair of arms (62, 62) equal to one end of the slider body (4) Rotatingly supported by a pair of the above-mentioned support shafts (5, 5); and a pull-tab body (61) connecting the other ends of the pair of arms (62, 62); and the one end of each of the arms (62) a contact surface (6P) having contact with the upper surface of the chain cloth (21), wherein the contact surface (6P) is in a reference state in which the pull tab (6) is parallel with respect to the chain cloth (21) The upper surface of the chain cloth (21) is separated, and the above-mentioned pull tab (6) phase is Under an inclined state inclined to the chain of the fabric (21) in contact to the chain above the cloth (21) surface. The zipper of claim 1, wherein the slider body (4) is provided with: an upper wing plate (41) located above a pair of the chain cloths (21, 21) on a pair of the chain gear rows (22, 22) a lower side plate; the lower wing plate (42) is located on a lower side of the pair of the element rows (22, 22); and a pair of flanges (44, 44), etc., from the left and right sides of the lower wing plate (42) The side edge portion protrudes upward; and in the above reference state, the front ends of the pair of the flanges (44, 44) are located at the corresponding sides of the left and right sides at positions corresponding to the rear ends of the support shafts (5), or The above fulcrum (5) The rear end is more forward. The zipper of claim 2, wherein in the reference state, the front ends of the pair of flanges (44, 44) are disposed on the right side of the left and right sides and disposed at the front end of the arm (62) and the support shaft (5) Between the ends.