JP7130458B2 - Bottom stop for slide fasteners and slide fasteners - Google Patents

Description

The present invention relates to a bottom stop for a slide fastener and a slide fastener.

Conventionally, a bottom stop for a slide fastener has a width similar to that of the element, and prevents the movement of the slider with a restraining surface facing the slider without inserting the entire bottom stop into the inside of the slider. It has been known.

For example, U.S. Pat. No. 6,300,001 discloses a bottom stop that includes upper and lower ridges on the upper and lower surfaces of the bottom end that are raised such that the thickness of the bottom stop increases toward the stopping surface. The bottom stop disclosed in Patent Document 1 has an upper raised portion and a lower raised portion so that the thickness of the upper portion and the thickness of the lower portion are the same, thereby providing a restraining force that prevents the movement of the slider. The thickness of the entire bottom stop is suppressed while ensuring the thickness.

WO2017/104008

One of the characteristics that indicate the strength of a slide fastener is the resistance to damage such that the bottom stop is torn in the left and right direction when the slider is moved to the bottom stop and the left and right fastener tapes are pulled in the left and right direction. Bottom stop tear strength is known. As one method for improving the tear strength of the bottom stop, it is conceivable to increase the thickness of the bottom stop.

However, in the bottom stop disclosed in Patent Document 1, since the thickness of the upper part and the thickness of the lower part are the same, in order to increase the thickness of the bottom stop, the thickness of the upper part and the thickness of the lower part However, if the thickness of the upper part is increased, the upper protruding part will protrude higher than the upper surface of the fastener tape, so fingers, fabrics, sewing machines, etc. will be caught on the upper protruding part. As a result, the ease of use of the slide fastener and the work efficiency of sewing deteriorate.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and provides a bottom stop for a slide fastener that can improve the tear strength of the bottom stop portion without deteriorating the ease of use of the slide fastener and the work efficiency of sewing. , and to provide a slide fastener.

A bottom stop (6) for a slide fastener (1) according to one embodiment of the present invention is
Along the pair of fastener element rows (3L, 3R) respectively provided on the edge portions (20L, 20R) on the sides facing the pair of fastener tapes (2L, 2R), the slider (4) moves along the slider (4 ) is moved forward or backward in accordance with the operation of a pull tab (42) provided on the slide fastener (1) to engage or separate the pair of fastener element rows (3L, 3R). (6),
a base (60) for sandwiching the edges (20L, 20R) of the pair of fastener tapes (2L, 2R) on the rear end (32L, 32R) side of the pair of fastener element rows (3L, 3R);
The surface of the fastener tapes (2L, 2R) on the side where the pull tab (42) is provided is defined as the upper surface (22U), and the surface of the fastener tapes (2L, 2R) on the side where the pull tab (42) is not provided is defined as the upper surface (22U). When the bottom surface (22D) is defined as the bottom surface (22D), the vertical thickness (T2) of the base portion (60) disposed on the bottom surface (22D) side of the pair of fastener tapes (2L, 2R) is , 2R) is thicker than the vertical thickness (T1) of the base (60) located on the upper surface (22U) side of the
It is characterized by

Further, the bottom stop (6) for the slide fastener (1) according to one embodiment of the present invention is
When the slider (4) moves in the rearward direction and contacts the base (60),
The lower side of the base (60) contacts the slider (4) before the upper side of the base (60) contacts the slider (4),
A bottom stop (6) for a slide fastener (1) according to claim 1, characterized in that:

Further, the bottom stop (6) for the slide fastener (1) according to one embodiment of the present invention is
A lower base facing surface (608) on the side of the lower side of the base (60) facing the slider (4) is the upper side of the side facing the slider (4) on the upper side of the base (60). is arranged in the forward direction from the base facing surface (607),
It is characterized by

Further, the bottom stop (6) for the slide fastener (1) according to one embodiment of the present invention is
An upper base facing surface (607) of the upper side of the base (60) facing the slider (4) and a lower side of the lower side of the base (60) facing the slider (4) It is arranged between the base facing surface (608) and the edge portions (20L, 20R) of one of the pair of fastener tapes (2L, 2R) is sandwiched, A projecting portion projecting toward the rear end (32L, 32R) of one fastener element row (3L, 3R) provided at the edge (20L, 20R) of the one fastener tape (2L, 2R) (61) and
From the portion where the protrusion (61) clamps the edge (20L, 20R) of one of the fastener tapes (2L, 2R), the base (60) extends from the edge of the other fastener tape (2L, 2R). and an inclined portion (62) inclined toward a portion that sandwiches the portions (20L, 20R),
It is characterized by

Further, the slide fastener (1) according to one embodiment of the present invention is
a pair of fastener tapes (2L, 2R);
a pair of fastener element rows (3L, 3R) respectively provided at edges (20L, 20R) on sides facing the pair of fastener tapes (2L, 2R);
A pull tab (42) is provided, and by moving forward or backward along the pair of fastener element rows (3L, 3R) in response to an operation on the pull tab (42), the pair of fastener element rows can be opened. a slider (4) that engages or separates (3L, 3R);
a bottom stop (6) for the slide fastener (1),
It is characterized by

According to the bottom stop (6) for the slide fastener (1) and the slide fastener (1) according to one embodiment of the present invention, the base portion arranged on the lower surface (22D) side of the fastener tapes (2L, 2R) Since the vertical thickness (T2) of (60) is thicker than the vertical thickness (T1) of the base (60) disposed on the upper surface (22U) side of the fastener tapes (2L, 2R), the fastener tapes ( Since the thickness of the entire base (60) can be increased without raising the upper side of the base (60) higher than the upper surface of the slide fastener (1), the usability of the slide fastener (1) and work efficiency of sewing are improved. Bottom stop tear strength can be improved without deterioration.

1 is a schematic front view showing a slide fastener 1 according to an embodiment of the invention; FIG. 1 shows a slide fastener 1 according to an embodiment of the present invention, where (a) is a schematic front view showing a state immediately before the slider 4 comes into contact with the bottom stop 6, and (b) shows the slider 4 coming into contact with the bottom stop 6. It is a schematic front view which shows a state. FIG. 4 is a cross-sectional view taken along line AA showing a state in which a slider 4 abuts against a bottom stop 6 in the slide fastener 1 according to one embodiment of the present invention; 4 is a right side view showing a state where the slider 4 is in contact with the bottom stop 6 in the slide fastener 1 according to one embodiment of the present invention; FIG. 1 shows a bottom stop 6 according to an embodiment of the present invention, (a) is a perspective view showing the bottom stop 6 with fastener tapes 2L and 2R sandwiched therebetween, and (b) shows the bottom stop 6 alone. It is a perspective view. 1 shows a bottom stop 6 according to an embodiment of the present invention, (a) is a front view, (b) is a left side view, (c) is a right side, (d) is a top view, and (e) is a bottom view. be.

A slide fastener 1 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic front view showing a slide fastener 1 according to one embodiment of the invention. FIG. 2 shows a slide fastener 1 according to an embodiment of the present invention, (a) is a schematic front view showing the state immediately before the slider 4 comes into contact with the bottom stop 6, and (b) is a schematic front view showing the state just before the slider 4 contacts the bottom stop 6. It is a schematic front view showing a state in which it is in contact with.

As shown in FIG. 1, the slide fastener 1 includes a pair of left and right fastener tapes 2L and 2R, and a pair of left and right fastener elements provided at the edges 20L and 20R on the sides facing the pair of left and right fastener tapes 2L and 2R, respectively. By moving forward or backward along the pair of left and right fastener element rows 3L, 3R according to the operation of the rows 3L, 3R and the pull tab 42, the pair of left and right fastener element rows 3L, 3R are engaged or separated. a pair of left and right fastener element rows 3L and 3R provided on the front ends 31L and 31R of the pair of left and right fastener element rows 3L and 3R, respectively; and rear ends 32L and 32R of the pair of left and right fastener element rows 3L and 3R. and a bottom stop 6 provided on the side.

In the slide fastener 1 according to one embodiment of the present invention, the direction in which the slider 4 moves (vertical direction on the paper surface of FIG. 1) is defined as the "front-back direction" (FB direction) and indicated by arrows F and B. In particular, the direction in which the slider 4 moves toward the front ends 31L and 31R of the fastener element rows 3L and 3R (the upward direction in the paper surface of FIG. 1) is defined as the "forward direction", and the opposite direction is the direction in which the slider 4 moves toward the fastener element rows. The direction of movement toward the rear ends 32L and 32R of 3L and 3R (downward direction on the paper surface of FIG. 1) is defined as "backward direction".

In addition, the direction that is horizontal to the surfaces of the fastener tapes 2L and 2R and that is orthogonal to the front-back direction (FB direction) (the left-right direction on the paper surface of FIG. 1) is defined as the “left-right direction” (LR direction). , arrows L, R. Further, the front and back directions of the fastener tapes 2L and 2R (the front and back directions on the paper surface of FIG. 1) are defined as "vertical direction" (UD direction) and indicated by arrows U and D. In particular, the surface of the fastener tapes 2L and 2R on the side where the pull tab 42 is provided (the surface in the paper surface of FIG. 1) is defined as the "upper surface 22U", and the opposite side is the fastener tape 2L on the side where the pull tab 42 is not provided. The surface of 2R (the back side in the paper surface of FIG. 1 is referred to as "lower surface 22D".

Each of the pair of left and right fastener tapes 2L, 2R is a strip having flexibility, and is arranged so that the longitudinal direction of the strip extends in the front-rear direction. On the side opposite to, edge portions 20L and 20R extending in the front-rear direction are provided. The edge portions 20L and 20R are provided with vertically bulging core cords 21L and 21R along the extending direction of the edge portions 20L and 20R. The fastener tapes 2L and 2R are, for example, woven or knitted with fiber thread and sewn onto the fabric to which the slide fastener 1 is attached.

Each of the pair of left and right fastener element rows 3L, 3R has a plurality of elements 30L, 30R arranged at a predetermined pitch along the core cords 21L, 21R formed on the edges 20L, 20R. The elements 30L and 30R are fixed to the core cords 21L and 21R by injection molding a synthetic resin material so as to sandwich the core cords 21L and 21R from above and below. In FIG. 1, the fastener element rows 3L and 3R arranged in the rearward direction of the slider 4 are in an engaged state, and the fastener element rows 3L and 3R arranged in the forward direction of the slider 4 are in a separated state. It's becoming Note that the elements 30L and 30R may be made of, for example, a metal material other than the synthetic resin material.

FIG. 3 is a cross-sectional view taken along line AA showing a state in which the slider 4 abuts against the bottom stop 6 in the slide fastener 1 according to one embodiment of the present invention. FIG. 4 is a right side view showing a state in which the slider 4 is in contact with the bottom stop 6 in the slide fastener 1 according to one embodiment of the present invention.

As shown in FIGS. 1, 3, and 4, the slider 4 includes a body 40 through which a pair of left and right fastener element rows 3L and 3R are inserted, a pull attachment portion 41 provided on the upper surface of the body 40, and a pull. A handle 42 (not shown in FIGS. 2(a), 2(b), 3 and 4) is attached to the attachment portion 41 so as to be swingable. The slider 4 is made of, for example, a synthetic resin material, a metal material, or the like.

As shown in FIGS. 3 and 4, the fuselage 40 includes an upper wing plate 400, a lower wing plate 401 arranged to face the upper wing plate 400 in the vertical direction, and an upper wing plate 400 and a lower wing plate 401. , an upper flange portion 403 erected downward from the left and right peripheral edges of the upper blade 400, and a lower flange portion 404 erected upward from the left and right peripheral edges of the lower blade 401. Prepare.

The fuselage 40 includes a side surface on the rear end side of the upper wing plate 400 , which is an upper wing plate facing surface 405 that faces the bottom stop 6 , and a side surface on the rear end side of the lower wing plate 401 , which is attached to the bottom stop 6 . It has a lower blade facing surface 406 facing each other, an upper blade lower surface 407 that is the lower surface of the upper blade 400 , and a lower blade upper surface 408 that is the upper surface of the lower blade 401 . Regarding the positional relationship in the front-rear direction between the upper blade facing surface 405 and the lower blade facing surface 406, the lower blade facing surface 406 and the upper blade facing surface 405 are arranged at approximately the same position in the front-rear direction. there is

The slider 4 also includes a Y-shaped element passage 43 defined by the connecting post 402 , the upper flange portion 403 and the lower flange portion 404 in the space between the upper blade plate 400 and the lower blade plate 401 . That is, on the front end side of the slider 4, a pair of left and right front openings 44L and 44R are formed by separating the upper flange portion 403 and the lower flange portion 404 by the connecting post 402 to the left and right. On the end side, a rear opening 45 is formed between the upper flange portion 403 and the lower flange portion 404, so that the pair of left and right front openings 44L, 44R and the rear opening 45 are communicated with each other. A Y-shaped element passage 43 is defined as a space for the passage.

The slider 4 moves forward along the pair of left and right fastener element rows 3L, 3R to allow the separated fastener element rows 3L, 3R to enter the element passage 43 through the pair of left and right front openings 44L, 44R. , mesh the separated fastener element rows 3L and 3R.

On the other hand, the slider 4 moves backward along the pair of left and right fastener element rows 3L, 3R to allow the meshed fastener element rows 3L, 3R to enter through the rear opening 45, thereby Separate columns 3L and 3R. Then, as shown in FIG. 2(a), the slider 4 further moves rearward from the state immediately before coming into contact with the bottom stop 6, so that as shown in FIG. 2(b), FIG. 3 and FIG. , and the bottom stop 6 are in contact with each other.

In this manner, the pair of left and right fastener tapes 2L and 2R is opened and closed by moving the slider 4 in the front-rear direction along the pair of left and right fastener element rows 3L and 3R.

As shown in FIG. 1, each of the pair of left and right top stops 5L and 5R clamps the core cords 21L and 21R located on the front ends 31L and 31R of the pair of left and right fastener element rows 3L and 3R, respectively, and holds the fastener. It is fixed to the edges 20L, 20R of the tapes 2L, 2R, respectively. The top stops 5L and 5R are made of synthetic resin material, for example.

When the slider 4 moves forward and reaches the front ends 31L and 31R of the fastener element rows 3L and 3R, the top stops 5L and 5R come into contact with the body 40 of the slider 4, thereby allowing the slider 4 to move the fastener element. This is to prevent it from coming off from the rows 3L and 3R.

FIG. 5 shows the bottom stop 6 according to one embodiment of the present invention, (a) is a perspective view showing the bottom end 6 with the fastener tapes 2L and 2R sandwiched therebetween, and (b) is a single bottom end. 4 is a perspective view showing a stop 6; FIG. FIG. 6 shows a bottom stop 6 according to one embodiment of the present invention, (a) is a front view, (b) is a left side view, (c) is a right side, (d) is a top view, and (e) is a bottom view.

As shown in FIG. 5(a), the bottom stop 6 sandwiches the core cords 21L and 21R located on the rear ends 32L and 32R of the fastener element rows 3L and 3R, and straddles the fastener tapes 2L and 2R. are fixed to the edges 20L, 20R of the fastener tapes 2L, 2R, thereby connecting the pair of left and right fastener element rows 3L, 3R. The bottom stop 6 is made of, for example, a synthetic resin material, and the total width in the left-right direction is equal to the width of the left and right elements, that is, the left end of the left element 30L and the right end of the right element 30R. is equivalent to the interval between

As shown in FIGS. 5 and 6, the bottom stop 6 is formed on the edges 20L and 20R of the pair of left and right fastener tapes 2L and 2R on the rear ends 32L and 32R of the pair of left and right fastener element rows 3L and 3R. A base portion 60 for sandwiching the core cords 21L and 21R, a projecting portion 61 arranged on the front side of the base portion 60, and a portion where the projecting portion 61 is not arranged on the front side of the base portion 60 and between the projecting portion 61. and an inclined portion 62 .

As shown in FIGS. 2(b), 3 and 4, the bottom stop 6 is positioned at the base when the slider 4 moves rearward and reaches the rear ends 32L and 32R of the fastener element rows 3L and 3R. 60 abuts against the body 40 of the slider 4 to prevent the slider 4 from coming off from the fastener element rows 3L and 3R. At this time, the protruding portion 61 and the inclined portion 62 do not abut on the body 40 of the slider 4, and the upper blade 400 and the lower blade 401 arranged in the vertical direction and the upper flange portion 403 arranged in the horizontal direction. , and the lower flange portion 404 .

The base 60 includes an upper base 600 forming the upper side of the base 60 , a lower base 601 forming the lower side of the base 60 , and a connecting section 602 connecting the upper base 600 and the lower base 601 . .

With respect to the center line L1 between the upper surface 22U and the lower surface 22D of the fastener tapes 2L and 2R, the thickness T2 in the vertical direction of the lower base portion 601 arranged on the lower surface 22D side of the fastener tapes 2L and 2R is equal to the thickness T2 of the fastener tape 2L. , and 2R on the side of the upper surface 22U. Assuming that the vertical dimension of the base portion 60 is thickness T0, the ratio of the thickness T2 of the lower base portion 601 to the thickness T0 of the base portion 60 (=(T2/T0)×100) is, for example, 51% to 75%. Thus, the ratio of the thickness T1 of the upper base portion 600 to the thickness T0 of the base portion 60 (=(T1/T0)×100) is, for example, 25% to 49%. A thickness T2 (T2>T1) of the base portion 601 is determined.

The base portion 60 has two semicircular upper core cord clamping surfaces 603 formed on the lower surface of the upper base portion 600 at symmetrical positions in the left-right direction, and laterally outside the two upper core cord clamping surfaces 603 . and two upper fastener tape clamping surfaces 604 formed therein. In addition, the base portion 60 has two semicircular lower core cord clamping surfaces 605 formed on the upper surface of the lower base portion 601 at symmetrical positions in the left-right direction, and two lower core cord clamping surfaces 605 . It has two lower fastener tape clamping surfaces 606 which are respectively formed on the left and right outer sides.

By arranging the lower surface of the upper base portion 600 and the upper surface of the lower base portion 601 so as to face each other via the connecting portion 602, the base portion 60 has two upper core cord clamping surfaces 603 and two lower cores. The core cords 21L and 21R are clamped between the cord clamping surface 605 and the fastener tapes 2L and 2R are clamped between the two upper fastener tape clamping surfaces 604 and the two lower fastener tape clamping surfaces 606.例文帳に追加

The base 60 has an upper base facing surface 607 on the front surface of the upper base 600 facing the upper blade facing surface 405 of the slider 4 . The base 60 also has a lower base facing surface 608 on the front surface of the lower base 601 facing the lower blade facing surface 406 of the slider 4 .

As for the positional relationship between the upper base facing surface 607 and the lower base facing surface 608 in the front-rear direction, the lower base facing surface 608 is arranged more forward than the upper base facing surface 607 . When the dimension of the bottom stop 6 in the front-rear direction is length D2, and the distance in the front-rear direction between the upper base facing surface 607 and the lower base facing surface 608 is distance D3, the ratio of the distance D3 to the length D2 ( = (D3/D2) × 100) is, for example, 1% to 20%, more preferably 1.7 to 8.7%. It is arranged forward from the facing surface 607 .

The protruding portion 61 is arranged between an upper base facing surface 607 and a lower base facing surface 608 , and includes an upper protruding portion 610 forming the upper side of the protruding portion 61 and a lower protruding portion 610 forming the lower side of the protruding portion 61 . and a side projecting portion 611 .

The projecting portion 61 sandwiches the core cord 21L formed on the edge portion 20L of the left fastener tape 2L as one of the left and right fastener tapes on the front surfaces of the upper projecting portion 610 and the lower projecting portion 611. and has an upper protruding surface 612 and a lower protruding surface 613 protruding toward the rear end 32L of the left fastener element row 3L provided at the edge 20L of the left fastener tape 2L. The protrusion 61 also includes a protrusion upper surface 614 that is the upper surface of the upper protrusion 610 and a protrusion lower surface 615 that is the lower surface of the lower protrusion 611 .

Assuming that the vertical dimension of the rear opening 45 of the slider 4 is length D1, the ratio of the vertical thickness T3 of the projecting portion 61 to the length D1 (=(T3/D1)×100) is, for example, The thickness T3 of the projecting portion 61 is determined to be 60% to 99%. The larger the ratio of the thickness T3 of the protruding portion 61 to the length D1 (=(T3/D1)×100), the smaller the gap when the protruding portion 61 is accommodated in the rear opening 45. That is, the protruding portion Since the distance between the upper surface 614 and the lower surface 407 of the upper blade and the distance between the lower surface 615 of the projecting portion and the upper surface 408 of the lower blade become narrower, the slider 4 is loose when it comes into contact with the bottom stop 6. Sticking can be reduced.

The inclined portion 62 is arranged between an upper base facing surface 607 and a lower base facing surface 608 . A side inclined portion 621 is provided.

The inclined portion 62 is a portion where the upper protruding portion 610 and the lower protruding portion 611 sandwich the core cord 21L formed on the edge portion 20L of the left fastener tape 2L on the front surfaces of the upper inclined portion 620 and the lower inclined portion 621. , the upper base portion 600 and the lower base portion 601 are provided with an upper inclined surface 622 and a lower inclined surface 623 that are inclined toward a portion that sandwiches the core cord 21R formed on the edge portion 20R of the right fastener tape 2R.

According to the slide fastener 1 including the bottom stop 6 according to one embodiment of the present invention, the thickness T2 in the vertical direction of the lower base portion 601 disposed on the lower surface 22D side of the pair of left and right fastener tapes 2L and 2R is Since it is thicker than the vertical thickness T1 of the upper base portion 600 arranged on the upper surface 22U side of the fastener tapes 2L and 2R, the upper base portion 600 is raised higher than the upper surface 22U of the fastener tapes 2L and 2R. Since the thickness of the entire base portion 60 can be increased without deteriorating the ease of use of the slide fastener 1 and the working efficiency of sewing, the tear strength of the bottom stop portion can be improved.

Further, according to the slide fastener 1 including the bottom stop 6 according to the embodiment of the present invention, the lower base facing surface 608 of the lower base 601 on the side facing the slider 4 is the slider 4 of the upper base 600 . Since the upper base facing surface 607 on the side facing the slider 4 is arranged in the forward direction, the slider 4 is moved when a rearward operation force is applied to the pull tab 42 to operate the pull tab 42 in the rear direction. moves rearward and contacts the base 60 , the lower base facing surface 608 contacts the lower blade facing surface 406 before the upper base facing surface 607 contacts the upper blade facing surface 405 . Further, when a large rearward operating force is applied to the pull tab 42, the upper blade 400 rotates around the portion where the lower blade facing surface 406 and the lower base facing surface 608 abut against each other. The upper base facing surface 607 comes into contact with the upper blade facing surface 405 by rotating in a direction approaching the upper base facing surface 607 . At this time, if the distance between the protrusion upper surface 614 and the upper blade lower surface 407 is narrow, the protrusion upper surface 614 may come into contact with the upper blade lower surface 407 .

With the slider 4 in contact with the base portion 60 in this manner, the rearward operating force applied to the pull tab 42 acts on the bottom stop 6 via the slider 4 , thereby causing the rearward operation force applied to the pull tab 42 to move forward. does not act along the extending direction of the core cords 21L and 21R (the direction of the force F1 shown in FIG. 3), but is inclined toward the lower base portion 601 with respect to the extending direction of the core cords 21L and 21R. (the direction of the force F2 shown in FIG. 3), the force acting along the extension direction of the core cords 21L and 21R can be reduced, and the bottom stop 6 prevents the core cords 21L and 21R from It is possible to suppress downward displacement of the pinched portion. When the rearward operating force applied to the pull tab 42 acts on the bottom stop 6 via the slider 4, the force in the vertical direction is thicker than the upper base portion 660, like the force F2 shown in FIG. Since it acts on the thick lower base portion 601 side, it is possible to improve the strength against damage such as tearing of the bottom stop 6 in the left-right direction due to a rearward operating force.

Further, according to the slide fastener 1 having the bottom end stop 6 according to the embodiment of the present invention, the protruding portion 61 clamps the core cord 21L formed on the edge 20L of the left fastener tape 2L, and the left side fastener tape 2L is positioned on the left side. Since it protrudes toward the rear end 32L side of the left fastener element row 3L provided at the edge 20L of the fastener tape 2L, the area of the portion where the bottom stop 6 sandwiches the core cord 21L is Since it increases by the amount protruding toward the rear end 32L side of the left fastener element row 3L, the strength when the bottom stop 6 clamps the core cord 21L of the fastener tape 2L can be improved.

Further, according to the slide fastener 1 having the bottom stop 6 according to the embodiment of the present invention, the inclined portion 62 sandwiches the core cord 21L formed on the edge portion 20L of the left fastener tape 2L with the protruding portion 61. , the base portion 60 is inclined toward the portion where the core cord 21R formed on the edge portion 20R of the right fastener tape 2R is sandwiched. 2A and the rear end 32R of the fastener element row 3R on the right side of the fastener element row 3R. The indicated space S) can be made smaller. Furthermore, since the inclined portion 62 is arranged at a portion where a force is applied to tear the bottom stop 6 in the left-right direction when the fastener tapes 2L and 2R are pulled in the left-right direction, the tear strength of the bottom stop portion is improved. can be made

(Other embodiments)
In the above embodiment, as shown in FIG. 6, the vertical thickness T2 of the lower base portion 601 is uniformly thicker than the vertical thickness T1 of the upper base portion 600 over the front-rear direction. The vertical thickness of the base portion 601 may be changed in the front-rear direction, or the vertical thickness of the upper base portion 600 may be changed in the front-rear direction. At that time, when the left and right fastener tapes 2L and 2R are pulled in the left and right direction, the vertical thickness of the lower base portion 601 of the portion to which a force is applied such that the bottom stop 6 is torn in the left and right direction is compared with the other portions. You can make it thicker.

In the above-described embodiment, as shown in FIG. 3, the positional relationship in the front-rear direction between the upper base facing surface 607 and the lower base facing surface 608 of the bottom stop 6 is such that the lower base facing surface 608 The lower blade facing surface 406 is arranged in the forward direction from the base facing surface 607, and the positional relationship between the upper blade facing surface 405 and the lower blade facing surface 406 in the slider 4 is such that the lower blade facing surface 406 Although it is arranged at the same position in the longitudinal direction as the blade facing surface 405 , when the slider 4 moves rearward and contacts the base 60 , the upper base facing surface 607 contacts the upper blade facing surface 405 . As long as the lower base facing surface 608 comes into contact with the lower blade facing surface 406 before coming into contact with it, the arrangement relationship is not limited to the above. For example, when the lower wing plate facing surface 406 is arranged in the forward direction than the upper wing plate facing surface 405, the lower base facing surface 608 and the upper base facing surface 607 are located at approximately the same position in the longitudinal direction. may be placed in

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and can be modified as appropriate without departing from the technical idea of the present invention.

1 Slide fastener 2L, 2R Fastener tape 3L, 3R Fastener element row 4 Slider 5L, 5R Top stop 6 Bottom stop 20L, 20R Edge , 21L, 21R ... core cord, 22U ... upper surface, 22D ... lower surface 30L, 30R ... element, 31L, 31R ... front end, 32L, 32R ... rear end 40 ... body , 41... Pull mounting part, 42... Pull 43... Element passage, 44L, 44R... Front side opening part, 45... Rear side opening part 60... Base part, 61... Protrusion Part 62... Inclined part 400...Upper wing plate 401...Lower wing plate 402...Connecting post 403...Upper flange part 404...Lower flange part 405...Upper Wing plate facing surface 406 Lower blade facing surface 407 Upper blade lower surface 408 Lower blade upper surface 600 Upper base 601 Lower base 602 Connecting portion 603 Upper core cord clamping surface 604 Upper fastener tape clamping surface 605 Lower core cord clamping surface 606 Lower fastener tape clamping surface 607 Upper base facing surface , 608 Lower base facing surface 610 Upper protruding portion 611 Lower protruding portion 612 Upper protruding surface 613 Lower protruding surface 614 Upper surface of protruding portion 615 Lower surface of projecting portion 620 Upper inclined portion 621 Lower inclined portion 622 Upper inclined surface 623 Lower inclined surface

Claims (5)

Along the pair of fastener element rows (3L, 3R) respectively provided on the edge portions (20L, 20R) on the sides facing the pair of fastener tapes (2L, 2R), the slider (4) moves along the slider (4 ) is moved forward or backward in accordance with the operation of a pull tab (42) provided on the slide fastener (1) to engage or separate the pair of fastener element rows (3L, 3R). (6),
a base (60) for sandwiching the edges (20L, 20R) of the pair of fastener tapes (2L, 2R) on the rear end (32L, 32R) side of the pair of fastener element rows (3L, 3R);
The surface of the fastener tapes (2L, 2R) on the side where the pull tab (42) is provided is defined as the upper surface (22U), and the surface of the fastener tapes (2L, 2R) on the side where the pull tab (42) is not provided is defined as the upper surface (22U). When the bottom surface (22D) is defined as the bottom surface (22D), the vertical thickness (T2) of the base portion (60) disposed on the bottom surface (22D) side of the pair of fastener tapes (2L, 2R) is , 2R) is thicker than the vertical thickness (T1) of the base portion (60) disposed on the upper surface (22U) side of the base portion (60),
A lower base facing surface (608) on the side of the lower side of the base (60) facing the slider (4) is the upper side of the side facing the slider (4) on the upper side of the base (60). is arranged in the forward direction from the base facing surface (607),
A bottom stop (6) for a slide fastener (1) characterized by: When the slider (4) moves in the rearward direction and contacts the base (60),
The lower side of the base (60) contacts the slider (4) before the upper side of the base (60) contacts the slider (4),
A bottom stop (6) for a slide fastener (1) according to claim 1, characterized in that: The lower base facing surface (608) faces the lower blade facing surface (406) of the slider (4) and contacts the lower blade facing surface (406),
The upper base facing surface (607) faces the upper blade facing surface (405) of the slider (4) and contacts the upper blade facing surface (405),
A bottom stop (6) for a slide fastener (1) according to claim 1 or 2, characterized in that: One of the pair of fastener tapes (2L, 2R) is arranged between the upper base facing surface (607) and the lower base facing surface (608). ) of one fastener element row (3L, 3R) provided at the edge (20L, 20R) of the one fastener tape (2L, 2R) while holding the edge (20L, 20R) of the one fastener tape (2L, 2R) a projection (61) projecting toward the rear end (32L, 32R);
From the portion where the protrusion (61) clamps the edge (20L, 20R) of one of the fastener tapes (2L, 2R), the base (60) extends from the edge of the other fastener tape (2L, 2R). and an inclined portion (62) inclined toward a portion that sandwiches the portions (20L, 20R),
A bottom stop (6) for a slide fastener (1) according to any one of claims 1 to 3. a pair of fastener tapes (2L, 2R);
a pair of fastener element rows (3L, 3R) respectively provided at edges (20L, 20R) on sides facing the pair of fastener tapes (2L, 2R);
A pull tab (42) is provided, and by moving forward or backward along the pair of fastener element rows (3L, 3R) in response to an operation on the pull tab (42), the pair of fastener element rows can be opened. a slider (4) that engages or separates (3L, 3R);
A bottom stop (6) for a slide fastener (1) according to any one of claims 1 to 4,
A slide fastener (1) characterized by:

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