TW201438620A - Fastener element and fastener stringer - Google Patents

Abstract

This fastener element (10, 20, 30, 40) is configured in such a manner that the thickness of the outer peripheral edges of a body section (12, 22, 42) and of leg sections (13, 23, 43), the thickness being measured between a first main surface and a second main surface, is constant, and a thinned section (16, 26, 36) having a smaller thickness than the outer peripheral edges is provided at at least part of the inner peripheral edges of the body section (12, 22, 42) and of the leg sections (13, 23, 43), the inner peripheral edges being located on the first main surface side and the second main surface side. As a result of this configuration, even if fastener stringers (1) are produced while the mounting pitch of fastener elements (10, 20, 30, 40) is reduced, a reduction in the flexibility and flexuousness of the fastener stringers (1) is minimized.

Description

Zipper chain and chain

The present invention relates to a metal fastener element for a zipper, and particularly relates to a zipper which can reduce the flexibility of the fastener tape or reduce the slidability of the slider even if the zipper is formed by reducing the mounting pitch of the fastener tape. Metal zipper chain teeth.

The metal zipper sprocket generally comprises: an engaging head; a tooth portion extending from the engaging head in one direction (rear); and a left and right extending from the tooth portion in one direction (rear) A pair of feet. Further, the engaging head portion is provided with an engaging convex portion and an engaging concave portion or an insertion space portion into which the engaging convex portion of the fastener element of the engaging object is fitted.

As the type of metal sprocket, a so-called single-sided type zipper element in which an engaging convex portion is provided on one side (upper surface) side of the engaging head and an engaging concave portion is provided on the other side (lower surface) side is known ( Hereinafter, it is sometimes referred to simply as a single-sided sprocket; and a pair of double-sided zipper fasteners each having a pair of engaging convex portions and an embedded space portion on the upper and lower surfaces of the engaging head (hereinafter, sometimes Only known as double-sided fasteners).

Here, a single-face fastener element disclosed in Japanese Patent Publication No. Sho 50-10889 (Patent Document 1) will be described as an example of a single-sided fastener element. The single-sided sprocket described in Patent Document 1 includes an engaging head portion, a tooth body portion, and a pair of left and right leg portions, and an engaging convex portion is convexly formed on the upper surface side of the engaging head portion on the lower surface side of the engaging head portion. The recess is provided with an engaging recess.

Further, in the single-face fastener element of Patent Document 1, the left and right leg portions include a thick portion which is disposed on the base end portion side of the leg portion and has a specific thickness, and a thin portion which is disposed on the foot The front end side of the part, and the thickness of the fastener element is reduced relative to the thick part by the step thin.

In this case, when the fastener element is viewed from the upper surface side, the thin portion of the leg portion is from the inner circumference of the foot (the edge of the contact side of the tape) to the outer edge (the edge of the side exposed to the outside) ) and configured. Further, the step of the boundary between the thick portion and the thin portion is arranged from the inner peripheral edge of the leg portion toward the outer side edge of the fastener element, and is bent toward the meshing head side, whereby the thin portion is attached to the fastener element. The outer edge portion is disposed over a wide range from the distal end of the leg portion to a portion of the tooth body portion.

When the fastener element of Patent Document 1 having such a form is attached to the side edge portion of the tape of the fastener tape at a specific interval in the longitudinal direction of the tape by the pressing process, the fastener elements are attached to each other. Since the thin portion is provided as described above, the contact portion of the fastener element with respect to the fastener tape becomes smaller (thinner) than the thick portion at the portion where the thin portion is formed, and the adjacent zipper is attached. The spacing between the teeth is widened.

Thereby, the side edge portion of the tape of the zipper tape is relaxed and the rigidity is caused by the attachment of the fastener elements, thereby improving the flexibility of the chain. Moreover, the sliding of the slider can be made light by the improvement of the flexibility of the chain.

On the other hand, an example of a double-sided fastener is disclosed in the specification of U.S. Patent No. 2,622,295 (Patent Document 2). As shown in FIG. 16, the double-sided sprocket 80 described in Patent Document 2 includes an engaging head portion 81, a tooth body portion 82, and a pair of left and right leg portions 83, which are positive and negative based on the center position of the sprocket thickness direction. Symmetrically constructed.

The engaging head portion 81 of Patent Document 2 includes a thin plate-shaped head body (also referred to as a base portion) 81a, a set of meshing convex portions 84 and an embedded space portion 85 disposed on the upper surface side of the head main body 81a, and One of the lower surface sides of the head body 81a engages the convex portion 84 and the insertion space portion 85.

In the left and right sides of each of the fitting space portions 85 disposed on the upper surface side and the lower surface side of Patent Document 2, the left and right side wall portions 86 of the self-engaging projections 84 are erected from the head main body 81a by the meshing convex portions. The portion 84 and the left and right side wall portions 86 surround the three sides of the embedded space portion 85. Further, on the rear side of the fitting space portion 85, the bottom surface 85a of the fitting space portion 85 is disposed to extend to the position of the strand portion 87 via the tooth body portion 82 of the fastener element 80.

In the tooth body portion 82 of Patent Document 2, the insertion space portion 85 and the left and right side wall portions 86 are continuously provided from the meshing head portion 81 toward the leg portion 83 side, and the zipper is disposed on the outer side of the left and right side wall portions 86. The dimension (thickness dimension) of the sprocket 80 in the thickness direction increases from the engaging head 81 to the inclined portion 88 of the leg portion 83.

The left and right leg portions 83 of Patent Document 2 include a leg body 83a extending from the tooth body portion 82 in a fixed thickness dimension, and a bulging portion 83b slightly bulging from the inner circumferential surface of the leg body 83a. In this case, the bulging portion 83b is disposed at the center portion in the thickness direction of the leg portion 83, and the upper surface and the lower surface of the bulging portion 83b are formed in the same plane as the bottom surface 85a of the insertion space portion 85. Further, according to Patent Document 2, the bulging amount (projecting height) of the bulging portion 83b bulging from the inner peripheral surface of the leg main body 83a is set to be about one thousandth of about one inch.

In Patent Document 2, the press line when the fastener element 80 is punched from the rolled material by the punch and the die is set to the bulging portion 83b which is thinner than the thickness of the leg body 83a and the head of the engaging head 81. The bulging portion 83b as described above is formed on the inner peripheral surface of the leg portion 83 on the boundary line of the portion main body 81a. According to Patent Document 2, since the press line is set at the above position, the life of the punch and the die is prolonged, and the total maintenance cost is reduced.

Further, the fastener element 80 of Patent Document 2 shown in FIG. 16 is in a state in which the fastener tape is sandwiched between the left and right leg portions 83, and is pressed by pushing the respective leg portions 83 toward each other to be pressed. The zipper teeth 80 are attached to the zipper tape.

In this case, in the fastener element 80 of the patent document 2, the bulging amount of the bulging part 83b bulging from the inner peripheral surface of the leg main body 83a is extremely small as mentioned above. Therefore, when the fastener element 80 is pressed and attached to the fastener tape, the inner peripheral surface of the leg body 83a is integrally crimped to the fastener tape by the elastic force of the fastener tape, and The entire outer surface of the bulging portion 83b is also crimped to the fastener tape. Therefore, the zipper teeth 80 can be used for the left and right legs 83. The zipper tape is firmly held, whereby the mounting strength of each of the zipper elements 80 to the zipper tape is improved.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Publication No. Sho 50-10889

[Patent Document 2] US Patent No. 2,622,295

As described above, the fastener element (single-sided element) described in Patent Document 1 has a thin portion formed on the left and right leg portions from the inner periphery to the outer edge. Therefore, the fastener element is attached to the fastener tape. When the tape is provided on the side edge portion, the tape contact portion (contact area) of the fastener element is reduced, and as a result, the flexibility of the tape is improved.

However, in the case of the fastener element of Patent Document 1, since the thin portion is formed to the outer edge of the leg portion and the body portion, when the fastener element is attached to the fastener tape to form a slide fastener, there is a case where the fastener is attached to the fastener tape. The problem is that the thin portion formed on each of the fastener elements is exposed to the outside, thereby impairing the appearance or appearance of the zipper.

Further, as in the case of the patent document 1, when the thin portion is formed to the outer edge of the leg portion and the body portion, the outer surface of the fastener element and the distal end surface of the leg side are made thinner, for example, When the slider of the zipper slides in the blocking direction, the contact area of the tape of the fastener element becomes smaller as described above, and the zipper teeth and the sprocket guide inside the slider which enter the sprocket guiding path of the slider The contact area of the surface is also reduced, so that the posture of each zipper element is inclined in the sprocket guiding path of the slider. As a result, the meshing of the left and right fastener elements is deteriorated, and there is a problem in that the fastener element is caught in the element guide path of the slider.

On the other hand, as described above, the zipper element (double-sided sprocket) 80 of the patent document 2 shown in Fig. 16 is as described above, and the entire inner peripheral surface of the leg main body 83a is integrally pressed against the outer surface of the bulging portion 83b. On the chain cloth belt, the holding area (contact area) of the zipper tape is ensured by the leg portion 83. Therefore, the mounting strength of each of the fastener elements 80 to the fastener tape is improved.

However, in the fastener element 80 of Patent Document 2, the bottom surface 85a of the fitting space portion 85 disposed on the upper surface side and the lower surface side of the fastener element is extended to the strand portion 87 via the tooth body portion 82 of the fastener element 80. Up to the position, the central portion of the tooth portion 82 along the strand portion 87 is constituted by a thin portion having a smaller thickness than the leg portion 83a.

Therefore, in the fastener element 80 of the patent document 2, since the intensity|strength of the center part of the tooth part 82 which consists of a thin-walled part is not high, when the fastener element 80 is pressed, it is attached to the fastener tape. With the plastic deformation of the leg portion 83, the central portion of the tooth body portion 82 formed into a thin wall is also easily deformed. As a result, the attachment position of the fastener element 80 is likely to be offset with respect to the fastener tape, or the posture of the fastener element 80 is easily inclined, which is one of the factors for lowering the yield in the manufacture of the slide fastener.

However, in recent years, in the zipper in which the double-sided fastener element 80 of Patent Document 2 is attached to the fastener tape, the mounting pitch of the double-sided fastener element 80 in the longitudinal direction of the tape is narrowed, so that it is difficult to see the chain. A zipper tape that is exposed between the respective fastener elements 80 of the tooth row, thereby providing a zipper that is more designed or has a higher quality than the previous one.

However, for example, when the double-sided sprocket 80 of Patent Document 2 is narrowed in the mounting pitch and attached to the zipper tape, the zipper chain is greatly ensured by the thickness of the leg portion 83 of each of the fastener elements 80. The contact area between the teeth 80 and the zipper tape (the tape mounting area of the fastener elements 80) is such that the tape area of the zipper tape between the fastener elements 80 is inevitably narrowed.

In this case, the zipper tape is firmly held by the fastener element 80 on the portion of the zipper tape that the fastener element 80 contacts, so that as the mounting pitch of the fastener element 80 is narrower as described above, the tape length is The greater the contact area of the tape sprocket 80 per unit length in the direction, the loss of the softness or the flexibility of the zipper tape, and as a result, there is a decrease in the softness of the chain, or a positive or negative tape. The disadvantage of the direction and the bending of the width of the tape is reduced.

Further, if the flexibility or the bendability of the fastener tape is lowered, for example, when the slider is slid on the slide fastener, the fastener element rows of the left and right fastener tapes are less likely to follow the Y-shaped sprocket guide path formed in the slider. The inside is curved, so there is also a problem that the sliding property of the slider is lowered.

Further, when the double-layer fastener element 80 is pressed against the fastener tape, generally, in order to stabilize the attachment of the double-sided fastener element 80, the fastener tape is stretched in the longitudinal direction of the tape, and the cloth is given to the fastener tape. The double-sided fastener element 80 is mounted in a state in which the tension in the longitudinal direction is applied.

Further, after the attachment work of the double-sided fastener elements 80 is completed, the tension applied to the fastener tape is released, and the fastener tape is contracted in the longitudinal direction of the tape.

When the double-sided fastener element 80 is mounted in this manner, when the tension of the zipper tape is released after the installation operation is completed, the zipper tape is not easily taped along the tape portion where the double-sided fastener element 80 is attached. The longitudinal direction is contracted, and the amount of contraction of the fastener element mounting portion of the fastener tape is smaller than that of the main body of the tape of the fastener tape.

In this case, if the mounting pitch of the double-sided fastener elements 80 is narrow as described above, the difference in the amount of contraction between the fastener element mounting portion and the tape main body portion becomes large, so that the chain to which the fastener element 80 is attached is attached. On the belt, there is a problem called creping (or offset), and the tether strap is integrally bent in the width direction of the tape so that the side of the fastener element of the zipper tape is convex, and the zipper tape is The end side opposite to the element attaching portion is concave.

The present invention has been made in view of the above problems, and a specific object thereof is to provide a fastener element for improving the flexibility of a chain belt while guiding the path of the fastener element of the slider while the slider is sliding. In the inside, the posture of the fastener element can be prevented from being inclined, and even if the installation pitch of the fastener element in the longitudinal direction of the tape is narrowed, the flexibility or the bendability of the fastener is not easily lowered, and the sliding property of the slider is lowered. And the problem that arises.

In order to achieve the above object, the most important feature of the fastener element provided by the present invention is that it is a metal fastener element, and as a basic configuration, it comprises an engaging head and a tooth body disposed on one end side of the engaging head. And branching from one end of the tooth body to two a pair of left and right leg portions extending from the strand, wherein the engaging head portion includes a thin plate-shaped head body including a first main surface and a second main surface opposite to the first main surface; and an engaging convex portion And protruding from the first main surface and the second main surface of the head main body; and the embedding space portion, wherein the meshing convex portion and the tooth portion are disposed on the first main surface side and the second main surface side Engaging the engaging convex portion on the meshing target side; the inner peripheral surface of the tooth body portion and the left and right leg portions includes a tape clamping surface, and the tooth body portion includes a bridge portion, which is attached to Between the embedded space portion and the tape nip surface, the position of the bottom surface of the embedded space portion is raised toward the thickness direction of the sprocket, and the left and right leg portions are coupled between the left and right leg portions, and the tooth body portion and the left and right leg portions are included The inner peripheral edge portion disposed on the tape nip surface and the outer side edge portion disposed along the left and right sprocket outer side surfaces, and the thickness between the first main surface and the second main surface on the outer edge portion The inner peripheral portion of the first main surface side and the first portion are fixed At least a part of the inner peripheral edge portion of the main surface side is provided with a thickened portion in which the thickness dimension is reduced from the outer edge portion.

Further, the most important feature of the fastener element according to another aspect of the present invention is that the metal fastener element is a basic structure comprising: an engaging head portion disposed on one end side of the engaging head; a tooth body portion and a pair of right and left leg portions branched from the one end of the tooth body portion and extending from the end of the tooth body portion, wherein the meshing head portion includes a head body including a first main surface and opposite to the first main surface a second main surface of the side; an engaging convex portion protruding from the first main surface of the head main body; and an engaging concave portion recessed with respect to the second main surface of the head main body a bottom shape; the inner circumferential surface of the tooth body portion and the left and right leg portions includes a tape clamping surface, and the tooth body portion and the left and right leg portions include an inner circumference disposed along the tape clamping surface And an outer side edge portion disposed along the outer side surface of the left and right element teeth, wherein a thickness dimension between the first main surface and the second main surface is fixed on the outer edge portion, and is on the first main surface side The inner peripheral portion and the inner peripheral portion of the second main surface side On at least a portion, is disposed so that the thickness dimension is reduced compared with the outer edge portion of the reduced thickness portion.

In the fastener element according to the invention as described above, it is preferable that the thickened portion includes an inclined surface or a curved surface which gradually decreases the thickness dimension toward the belt clamping surface. Further, in the fastener element of the present invention, the thickened portion may be included in the recessed portion in which the notch is formed on the side of the tape clamping surface.

In the fastener element according to the present invention, it is preferable that the thickened portion is continuously disposed from the front end portion of the leg portion to the front end portion of the other leg portion via the leg portion disposed on the tooth body portion. .

Further, the thickened portion may be partially disposed on one of the inner peripheral edge portions. In this case, it is particularly preferable that the thickened portion is disposed in a region continuous with the base end portion of the left and right leg portions and the strand portion disposed on the tooth body portion, or disposed on the left and right sides On the front end of the foot.

In the fastener element according to the present invention, it is preferable that the thickened portion has a size of 5% or more and 50% of a dimension between the tape clamping surface and the outer surface of the leg portion in a plan view of the fastener element. Configured for the following sizes.

Further, it is preferable that the thickened portion is disposed opposite to each other on both surfaces of the first main surface and the second main surface.

Further, according to the present invention, there is provided a fastener tape which is provided with a fastener element having a configuration as described above arranged on a side edge portion of a tape of a fastener tape in a longitudinal direction along a tape length direction. The size of the pitch of the fastener elements is P, and when the interval between the outer peripheral surfaces of the fastener elements adjacent to each other is D1, the relationship of D1 < (P - D1) is satisfied.

In the chain belt of the present invention, it is preferable that D2>(P-D1) is satisfied when the interval between the belt nips of the fastener elements adjacent to each other is D2.

The metal fastener element according to the first aspect of the present invention is configured as a so-called double-sided fastener element, and is particularly formed on the main body of the fastener element, and is formed in the insertion space portion of the meshing head portion. Between the nip surfaces of the inner circumferential surface of the body, a bridge portion between the left and right leg portions is formed so as to be raised from the bottom surface of the embedded space portion toward the thickness direction of the sprocket.

Further, the tooth body portion and the left and right leg portions of the fastener element include an inner peripheral edge portion disposed along the tape clamping surface and an outer side edge portion disposed along the left and right fastener element outer surfaces. Moreover, the thickness dimension between the first main surface and the second main surface is set to a fixed size on the left and right outer edge portions, and the inner peripheral edge portion and the second main surface side on the first main surface side. At least a part of the inner peripheral edge portion is provided with a reduced thickness portion that reduces the thickness between the first main surface and the second main surface from the outer edge portion.

Further, the metal fastener element according to the second aspect of the present invention is configured as a so-called single-sided fastener element, and the tooth body portion and the left and right leg portions of the fastener element include an inner peripheral edge portion disposed along the belt clamping surface, And the outer side edge portions are arranged along the outer side surfaces of the left and right fastener elements. Moreover, the thickness dimension between the first main surface and the second main surface is set to a fixed size on the left and right outer edge portions, and the inner peripheral edge portion and the second main surface side on the first main surface side. At least a part of the inner peripheral edge portion is provided with a thickened portion in which the thickness between the first main surface and the second main surface is reduced from the outer edge portion.

According to the first and second aspect of the present invention, the fastener element of the first and second aspects of the present invention can reduce the forward and reverse directions of the tape affixing surface by the thickened portion disposed on the inner peripheral edge portion. The size (in other words, the area of the tape clamping surface is reduced), so that when the fastener element is attached to the side edge portion of the tape of the fastener tape, the tape contact area of the fastener element can be reduced.

Therefore, for example, when the mounting pitch of the fastener element is set to be the same as that of the previous zipper, the tape area (band area) in the longitudinal direction of the tape of the zipper tape between the fastener elements is enlarged. Therefore, the softness of the chain belt is improved.

On the other hand, the tooth body portion of the fastener element of the present invention and the outer side edge portion of the left and right leg portions have a thickness which is fixed to a specific size. Therefore, when the fastener element is attached to the fastener tape to form a zipper. In the plan view of the zipper, the thickened portions of the respective fastener elements are not easily seen by the tooth body portion and the outer edge portions of the left and right leg portions. Therefore, in the present invention, For example, in the case of the above-described Patent Document 1, the disadvantage of the appearance or appearance of the zipper is impaired by improving the flexibility of the fastener tape.

Further, for example, when the slider of the slide fastener is slid in the lock direction, the outer side surface of each of the fastener elements in the element guide path of the slider and the end surface of the inner side of the leg line (the rear end surface) can be entered. ) tangentially contacting the sprocket guiding surface inside the slider, thereby preventing the posture of each zipper element from being inclined within the sprocket guiding path of the slider, so that the left and right zipper elements can be smoothly engaged.

Further, in the case of the fastener element of the present invention, for example, in order to improve the design and the like, even when the mounting pitch is narrowed relative to the fastener tape, the thickness may be reduced by the inner peripheral edge portion. The contact area of the zipper tape as described above is reduced. Therefore, it is possible to appropriately ensure the banding region in the longitudinal direction of the tape of the fastener tape between the fastener elements, thereby suppressing the softness or the bendability of the fastener tape, and suppressing the decrease in flexibility or flexibility. As a result, the sliding property of the slider is lowered.

Further, in the present invention, as described above, since the contact area of the fastener element to the fastener tape is reduced to secure the tape area between the fastener elements, even if the mounting pitch of the fastener elements is narrowed, the chain is formed. When the belt is worn, the stretchability of the fastener element mounting portion of the zipper tape can be appropriately ensured, and the zipper is less likely to occur on the chain belt.

Further, in the double-sided fastener element according to the first aspect of the present invention, the bridge portion is provided on the tooth body portion as described above, whereby the portion (strand portion) of the tooth portion and the left and right foot portions can be increased. The strength in its vicinity. Therefore, when the fastener element is pressed and attached to the fastener tape, even if the leg is plastically deformed, the tooth body portion is not easily deformed, whereby the embedded space portion disposed on the meshing head can be stably maintained. The form. Moreover, the mounting position of the fastener element can be effectively prevented from being displaced with respect to the fastener tape, or the posture of the fastener element can be inclined with respect to the fastener tape, so that the fastener element can be placed in a proper position at a specific position. Properly implanted into the zipper tape.

In the metal fastener element of the present invention, the thickness reduction portion includes a thickness dimension It is formed by an inclined surface or a curved surface which is gradually reduced with a clamping surface. Thereby, the thickened portion which can improve the flexibility or the flexibility of the fastener tape can be easily placed at a specific position on the inner peripheral edge portion of the fastener element.

Further, the thickened portion may be configured to include a recess having a stepped shape on the side of the tape clamping surface. Thereby, the thickened portion which can improve the flexibility or the flexibility of the fastener tape can be easily placed at a specific position on the inner peripheral edge portion of the fastener element. Further, for example, even when a fastener element is punched out from a flat plate-shaped angle material made of metal, a thickened portion can be stably provided on the fastener element.

Further, in the fastener element of the present invention, the thickened portion is continuously disposed from the front end portion of one leg portion to the front end portion of the other leg portion via the strand portion disposed on the tooth body portion. Thereby, the flexibility or flexibility of the fastener tape to which the fastener element of the present invention is attached can be stably ensured, and the occurrence of creping can be effectively prevented.

On the other hand, the thickened portion may be partially disposed, for example, in a region continuous with the base end portion of the left and right leg portions and the strand portion of the tooth body portion, or a region of the front end portion of the left and right leg portions. On one part of the peripheral part. Thereby, in the fastener tape to which the fastener element of the present invention is attached, the flexibility and the flexibility of the fastener tape and the sliding strength of the fastener element can be balanced, and the occurrence of creping can be effectively prevented.

Further, in the plan view of the fastener element of the present invention, the reduced thickness portion is sized to be 5% or more and 50% or less of the size between the ferrule of the fastener element of the fastener element and the outer surface of the left and right leg portions. Configuration. By setting the size of the reduced thickness portion within such a range, the contact area of the fastener element to the fastener tape can be stably reduced, and the tooth portion can be prevented even if the thickness of the fastener element is provided on the fastener element. Or the strength of the foot is reduced.

Further, in the present invention, the dimension between the zipper tape of the fastener element and the outer surface of the leg is the case where the zipper element is viewed from the upper surface side or the lower surface side. The shortest distance between the solid surface and the outside of the foot. Moreover, when the shortest distance between the joining surface of the joining tape and the outer side of the leg changes depending on the position of the foot, The shortest distance between the joining surface of the joining tape and the outer side of the foot is the shortest distance on the portion of the shortest leg.

Further, in the fastener element of the present invention, the reduced thickness portion is disposed opposite to each other on both the first main surface and the second main surface of the fastener element. Therefore, when the fastener element is attached to the fastener tape, the orientation of the fastener element can be efficiently performed regardless of the orientation of the fastener element in the forward and reverse directions.

Moreover, according to the present invention, there is provided a chain belt having a zipper element having a configuration as described above on a side edge portion of a tape of a zipper tape, arranged in a specific interval along the length direction of the tape, and The size of the distance between the fastener elements is P, and when the interval between the outer peripheral surfaces of the fastener elements adjacent to each other is D1, the relationship of D1 < (P - D1) is satisfied.

According to the chain belt of the present invention, the tape width between the fastener elements on the fastener tape can be ensured to be wide, so that the flexibility of the fastener tape can be improved. Further, when the fastener tape is used to form the slide fastener, the slidability of the slider can be improved. Further, since the zipper tape can be easily seen between the fastener elements of the fastener element row, the design of the zipper can be improved, or the zipper can be given a high-grade feeling.

In particular, in the present invention, when the interval between the ferrules of the fastener elements adjacent to each other is set to D2, the relationship between the zipper elements can be ensured so as to satisfy the relationship of D2>(P-D1). The belt area is wide. Thereby, it is possible to suppress a decrease in flexibility or flexibility of the fastener tape, and it is also possible to suppress a decrease in the slidability of the slider due to a decrease in flexibility or flexibility. Further, it is possible to appropriately ensure the stretchability of the fastener element mounting portion of the fastener tape, and it is possible to prevent the occurrence of creping on the fastener tape.

1‧‧‧Chain

2‧‧‧ zipper tape

2a‧‧‧core cord

10‧‧‧zipper teeth

11‧‧‧Meshing head

11a‧‧‧ head body

11b‧‧‧Extension

12‧‧‧The tooth body

12a‧‧‧Bridge

12b‧‧‧Outside

12c‧‧‧ shares

13‧‧‧foot

13a‧‧‧Bend

14‧‧‧Meshing convex

15‧‧‧Internal space department

15a‧‧‧ bottom

16‧‧‧Thickening Department

17‧‧‧ Non-reduction department

18‧‧‧ cloth belt clamping surface

20‧‧‧zipper teeth

21‧‧‧Meshing head

21a‧‧‧ head body

21b‧‧‧Extension

22‧‧‧The tooth body

22a‧‧‧Bridge

22b‧‧‧Outside

22c‧‧‧ shares

23‧‧‧ feet

23a‧‧‧Bend

23b‧‧‧Depression

24‧‧‧Meshing convex

25‧‧‧ embedded space department

25a‧‧‧ bottom

26‧‧‧Thickening Department

27‧‧‧Non-thickness department

28‧‧‧ cloth belt clamping surface

30‧‧‧zipper teeth

36‧‧‧Thickening Department

37‧‧‧Non-thickness department

40‧‧‧zipper teeth

41‧‧‧Meshing head

41a‧‧‧ head body

42‧‧‧The tooth body

42a‧‧‧ shares

43‧‧‧foot

43a‧‧‧Bend

44‧‧‧Meshing convex

45‧‧‧Move the recess

45a‧‧‧ bottom

46‧‧‧Thickening Department

47‧‧‧ Non-reduction department

48‧‧‧ cloth belt clamping surface

80‧‧‧zipper teeth

81‧‧‧Meshing head

81a‧‧‧ head body

82‧‧‧ teeth department

83‧‧‧ feet

83a‧‧‧ Foot body

83b‧‧‧ bulging

84‧‧‧Meshing convex

85‧‧‧Internal space department

85a‧‧‧ bottom

Side wall around 86‧‧

87‧‧‧ shares

88‧‧‧ inclined section

D1‧‧‧ spacing between outer peripheral surfaces of zipper teeth adjacent to each other

D2‧‧‧ spacing between the nips of the adjacent zipper elements

P‧‧‧Size zipper teeth installation spacing

Fig. 1 is a perspective view showing a fastener element of a first embodiment of the present invention.

Fig. 2 is a plan view showing the fastener element.

Figure 3 is a cross-sectional view taken along line III-III of Figure 2.

Figure 4 shows the left and right chain links of the fastener element attached to the zipper tape. view.

Fig. 5 is a cross-sectional view showing a cross section of a main portion of the chain belt.

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

Figure 7 is a cross-sectional view showing the main portion of the chain belt in a direction orthogonal to the front and back directions of the tape.

Fig. 8 is a perspective view showing a fastener element of a second embodiment of the present invention.

Fig. 9 is a plan view showing the fastener element.

Figure 10 is a cross-sectional view taken along line X-X of Figure 9.

Figure 11 is a cross-sectional view of the fastener tape with the fastener element attached to the fastener tape.

Figure 12 is a cross-sectional view taken along the line XII-XII shown in Figure 11.

Figure 13 is a plan view showing a fastener element of a third embodiment of the present invention.

Figure 14 is a perspective view showing a fastener element of a fourth embodiment of the present invention.

Figure 15 is a cross-sectional view of the fastener element.

Figure 16 is a perspective view showing a prior fastener element.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the present invention is not limited to the embodiment described below, and various modifications can be made as long as it has substantially the same configuration as the present invention and exerts the same operational effects.

For example, in the present invention, the method of manufacturing the fastener element is not particularly limited and can be arbitrarily selected. That is, the fastener element of the present invention includes: a metal fastener element manufactured by punching or shearing a rectangular wire into a shape of a fastener element; a metal fastener element manufactured by die casting; and sequentially cutting the profile A metal fastener element manufactured by a Y-shaped long wire (Y bar).

[Example 1]

Fig. 1 is a perspective view showing a fastener element of the first embodiment. Fig. 2 is a plan view showing the fastener element, and Fig. 3 is a sectional view taken along line III-III of Fig. 2.

In the following description of the fastener element, the front-rear direction means a direction parallel to the width direction of the tape of the fastener tape to which the fastener element is attached, and is also referred to as a fastener element length direction. In this case, the front side is set to the direction of the side of the engaging head with respect to the tooth body portion of the fastener element, and the rear side is set to the side of the leg portion with respect to the tooth body portion of the fastener element. direction.

Moreover, the left-right direction means a direction parallel to the front and back directions of the tape of the fastener tape, and is also called a sprocket width direction. Further, the vertical direction refers to a direction parallel to the longitudinal direction of the tape of the fastener tape, and is also referred to as a sprocket thickness direction.

The fastener element 10 of the first embodiment is formed of a metal such as a copper alloy, a nickel alloy, or an aluminum alloy. The fastener element 10 includes: an engaging head portion 11 including an engaging convex portion 14 and an insertion space portion 15; a tooth body portion 12 disposed at a rear end side of the engaging head portion 11; and a branch portion formed at the rear end of the tooth body portion 12 And a pair of right and left leg portions 13 extending; and a pair of meshing convex portions 14 and an embedding space are respectively disposed on the upper surface (first main surface) side and the lower surface (second main surface) side of the meshing head portion 11 The double-sided element of the portion 15 is formed.

Further, the fastener element 10 is formed to be positively opposed with respect to the center position of the sprocket thickness direction, and is formed bilaterally symmetrically with respect to the center position in the sprocket width direction.

In this case, the tooth body portion 12 is disposed in the longitudinal direction of the sprocket (front-rear direction) from the edge position of the bottom surface 15a of the fitting space portion 15 to the position of the tape nip surface 18 described below. In the part, the portion disposed on the front side of the tooth body portion 12 is referred to as the meshing head portion 11, and the portion disposed on the rear side of the tooth body portion 12 is referred to as the leg portion 13. 1 and 2, the fastener element 10 in a state before being attached to the fastener tape 2 is shown, and the left and right leg portions 13 are opened in the sprocket width direction, as viewed from the upper surface or the lower surface side. The zipper element 10 has a substantially Y-shaped form.

The meshing head portion 11 includes a thin plate-shaped head body (also referred to as a base portion) 11a, and an upper surface (first main surface) and a lower surface (second main surface) between the upper and lower directions (the thickness direction of the sprocket) It The size has a fixed size; the engaging protrusion 14 protrudes from the upper surface and the lower surface of the head body 11a; and the left and right extending portions 11b are self-aligned on the upper surface side and the lower surface side of the head body 11a. The body 12 extends forward.

The head body 11a of the engaging head portion 11 is formed by a specific thickness which makes the thickness of the element teeth smaller than the tooth body portion 12 via the step. Further, the front end edge (tip edge) of the head main body 11a is disposed in parallel with the direction of the sprocket width. When the left and right side edges of the head main body 11a are viewed from the upper surface side or the lower surface side, the size of the sprocket width direction of the head main body 11a is gradually decreased toward the front end edge, relative to the sprocket length. Tilt or bend in the direction.

The engaging convex portion 14 on the upper surface side and the lower surface side is attached to the central portion of the sprocket width direction of the front end portion of the head main body 11a, and is formed in a mountain shape from the upper surface and the lower surface of the head main body 11a, and The tooth portions 12 are arranged apart by a specific distance. The left and right extending portions 11b are spaced apart from each other with a specific sprocket thickness swelled from the head body 11a so as to face the left and right sides of the engaging convex portion 14 from the left and right outer side portions 12b of the tooth body portion 12 The side side way extends toward the front. In this case, a specific gap is provided between the engaging convex portion 14 and the left and right extending portions 11b.

The upper surface and the lower surface of the left and right extension portions 11b are disposed on the same plane as the upper surface and the lower surface of the left and right outer side portions 12b or the left and right outer side portions of the leg portion 12. Further, the inner side surfaces of the left and right extending portions 11b are formed so as to gradually increase in size in the sprocket width direction of each of the extending portions 11b as they approach the height position of the bottom surface 15a of the fitting space portion 15. Tilted wedge shape.

Further, in the meshing head portion 11, an insertion space portion 15 surrounded by the engaging convex portion 14, the left and right extending portions 11b, and the tooth body portion 12 is formed on the upper surface side and the lower surface side of the head main body 11a, respectively. Each of the embedded space portions 15 includes a bottom surface 15a that sets the position (height position) in the thickness direction of the sprocket at the same position as the upper surface and the lower surface of the head main body 11a.

In the tooth body portion 12 of the first embodiment, a bridge portion 12a is formed in a central portion of the tooth body portion 12 in the sprocket width direction, and is swelled from the bottom surface 15a of the insertion space portion 15 toward the thickness of the element tooth, and the chain The tooth thickness dimension is larger than the head body 11a of the engaging head portion 11, and includes side portions 12b disposed on the left and right sides of the bridge portion 12a.

In this case, the bridge portion 12a of the tooth body portion 12 is disposed between the insertion space portion 15 and the following portion 12c in the sprocket width direction so as to connect the base end portions of the left and right leg portions 13 (cloth) With a clamping surface 18). Further, as shown in FIG. 3, the bridge portion 12a includes an inclined surface that is inclined downward toward the front side of the fitting space portion 15 of the bridge portion 12a.

The left and right outer side portions 12b of the tooth body portion 12 include an upper surface and a lower surface which are parallel to each other and are flat. Further, the upper surface and the lower surface of the left and right outer side portions 12b (especially the outer edge portions) are continuously disposed on the upper surface and the lower surface of the left and right extending portions 11b, and the upper surface of the outer side edges of the left and right leg portions 13 and On the lower surface, the thickness of the sprocket of the right and left outer side portions 12b is set to be the same as the sprocket thickness dimension of the left and right extension portions 11b and the sprocket thickness dimension of the outer side edge portions of the left and right leg portions 13.

By arranging the bridge portion 12a between the right and left outer side portions 12b of the tooth body portion 12 of the first embodiment, the strength of the tooth body portion 12 can be effectively increased, whereby the zipper element 10 can be pressed during the pressing process. The tooth body portion 12 is not easily deformed.

Further, in the central portion of the tooth body portion 12, a downwardly inclined thickened portion 16 is disposed toward the tape nip surface 18 as follows. The thickened portion 16 of the tooth body portion 12 is formed so as to be inclined downward, whereby the bridge portion can be easily secured, for example, in comparison with the case where the thickened portion is included in the concave portion of the tape-retaining surface side in a stepped manner. The thickness of the sprocket longitudinal direction (front-rear direction) of 12a can increase the strength of the bridge portion 12a.

The left and right leg portions 13 of the first embodiment are branched and extended left and right via the strand portion 12c located at the rear end of the tooth body portion 12. Further, in the front end portion (rear end portion) of the left and right leg portions 13, a hook-shaped bent portion 13a which is curved in a direction (inner side) which is close to each other is disposed.

In this case, the upper surface and the lower surface of the outer side edge portion of each leg portion 13 are formed as phases. The mutually parallel flat surfaces are set in relation to the thickness direction of the sprocket between the upper surface and the lower surface of the outer edge portion of the leg portion 13 in consideration of the appearance of the zipper or the contact with the slider when the slider slides. For a specific fixed size. Further, as described above, the dimension of the outer side edge portion of the tooth body portion 12 in the thickness direction of the sprocket is set to a specific fixed size which is the same as the dimension of the outer side edge portion of the leg portion 13 in the thickness direction of the sprocket.

In the fastener element 10 of the first embodiment, the inner peripheral surface of the tooth body portion 12 and the left and right leg portions 13 are arranged in parallel with the thickness direction of the element teeth. The inner peripheral surface includes a distal end surface facing the inner side of the curved portion 13a of the left and right leg portions 13 (the center position side in the sprocket width direction), and includes a curved portion 13a from one leg portion 13 (the left leg portion 13). The distal end surface continues to one of the continuous faces via the tooth body portion 12 to the distal end surface of the curved portion 13a of the other leg portion 13 (the right leg portion 13).

Further, the inner peripheral surface of the fastener element 10 is adhered to the fastener tape 2 so as to sandwich the side edge portion of the tape of the fastener tape 2 as described below. The tape clamping surface 18 is crimped onto the zipper tape 2.

In this case, the portion of the fastener element 10 that is disposed on the upper surface side and the lower surface side along the belt clamping surface 18 of the tooth body portion 12 and the left and right leg portions 13 is an inner peripheral edge portion. Further, the portion of the fastener element 10 along the tooth body portion 12 and the left and right leg portions 13 that are not the circumferential surface of the tape clamping surface 18 (that is, the outer circumferential surface) is continuously disposed on the upper surface side and the lower surface side. The outer peripheral edge portion includes the outer side edge portion disposed along the outer side surface of the tooth body portion 12 and the left and right leg portions 13 and the rear end surface of the leg portion 13 facing the inner side of the tape. End edge. Further, the outer side surfaces of the tooth body portion 12 and the left and right leg portions 13 are separated from the fastener tape 2 and are parallel to the front surface of the tape and the back surface of the tape when the fastener element 10 is attached to the fastener tape 2. The faces that are arranged (including approximately parallel).

Further, in the first embodiment, the thickness reduction portion 16 which reduces the size between the upper surface and the lower surface (that is, the thickness of the element) is formed on the inner peripheral edge portion of the tooth body portion 12 and the left and right leg portions 13. The belt clamping surface (inner peripheral surface) 18 along the tooth body portion 12 and the left and right foot portions 13 is oppositely opposed It is disposed on the upper surface side of the element and the lower surface side of the element. By arranging the reduced thickness portion 16, the thickness of the sprocket in the region of the inner peripheral portion where the thickened portion 16 is disposed is smaller than the thickness of the sprocket at the outer edge portion of the left and right leg portions 13. That is, the thickness of the tape nip surface 18 formed in the region where the thickened portion 16 is disposed is thinner than the thickness of the sprocket thickness of the outer side edge portion of the left and right leg portions 13. Further, in the present invention, depending on the purpose of use of the zipper or the like, the thickened portion 16 may be provided asymmetrically on the upper surface side of the element and the lower surface side of the element tooth.

In particular, in the case of the first embodiment, the thickened portion 16 includes a downwardly inclined surface which gradually decreases the thickness of the sprocket toward the tape clamping surface 18. Further, the reduced thickness portion 16 may be formed by a curved surface whose tape thickness is gradually reduced toward the tape clamping surface 18.

Further, when the fastener element 10 is viewed from the upper surface side or the lower surface side, the dimension of the downwardly inclined portion of the thickened portion 16 (i.e., the dimension of the thickened portion 16 orthogonal to the tape clamping surface 18) The setting is a range of 5% or more and 50% or less of the minimum distance dimension between the tape clamping surface (inner peripheral surface) 18 and the outer side surfaces of the left and right leg portions 13, preferably 7% or more and 30% or less. The scope.

Since the above-described size of the thickened portion 16 is set to be 5% or more of the minimum distance between the tape clamping surface 18 and the outer side surface, when the fastener element 10 is attached to the fastener tape 2 as described below. In essence, the zipper tape can be strongly pressed only by the tape fixing surface 18, so that the contact area of the zipper element 10 to the zipper tape 2 can be reduced.

Further, since the size of the thickened portion 16 is set to 50% or less of the minimum distance between the tape nip surface 18 and the outer side surface, even the tooth body portion 12 and the leg portion 13 of the fastener element 10 are provided. Providing the thickened portion 16 also prevents the strength of the tooth portion 12 or the leg portion 13 from being greatly reduced. Further, when the fastener element 10 is attached to the fastener tape 2 to form the fastener tape 1, the thickened portion 16 of the fastener element 10 can be more easily seen from the outside.

Further, in the first embodiment, a part of the front end portion of the curved portion 13a of the left and right leg portions 13 is excluded, and the bent portion 13a of the one (left side) leg portion 13 passes through the tooth body portion 12 to the other (right side) leg portion 13 The curved portion 13a is continuously disposed with the thickness reduction along the tape clamping surface 18 Part 16. In other words, the portion of the front end portion of the curved portion 13a of the left and right leg portions 13 is excluded, from the curved portion 13a of one (left side) leg portion 13 to the curved portion 13a of the other (right side) leg portion 13 via the tooth body portion 12a. The tape nip surface 18 is continuously provided with a thin portion (that is, continuously disposed at an inner peripheral edge portion excluding a portion of the front end portion of the curved portion 13a). In this case, the front end portion of the curved portion 13a is disposed along a portion of the tape nip surface 18, particularly at the corner portion on the outer peripheral side of the front end portion of the curved portion 13a, and has an outer side with the tooth body portion 12 The portion 12b and the non-thickness portion 17 having the same element thickness of the outer side edge portion of the left and right leg portions 13 are the same.

In the case of manufacturing the fastener element 10 of the first embodiment having such a configuration, first, a pair of upper and lower dies are used to press a rectangular wire formed of a metal such as a copper alloy, a nickel alloy or an aluminum alloy to form the flat angle. The wire is partially plastically deformed, whereby the engaging head portion 11, the tooth body portion 12, and the reduced thickness portion 16 are formed at a specific interval. Then, edge trimming processing is performed to remove the unnecessary portion of the substantially triangular shape from the left and right side edges of the rectangular wire.

Next, using the cutting punch and the cutting die, the rectangular wire which has been subjected to edge trimming is subjected to press working along the outer peripheral shape of the fastener element 10, and thereafter, the obtained stepped metal piece is subjected to a grinding step and coating. The steps and the like are loaded, whereby the fastener element 10 of the first embodiment shown in Fig. 1 is obtained.

The fastener element 10 of the first embodiment obtained in this manner is manufactured in a state in which the left and right pair of leg portions 13 are left and right from the front end portion of the tooth body portion 12 side toward the rear end portion. Therefore, the side edge portion of the tape of the fastener tape 2 is inserted between the left and right leg portions 13, and the left and right leg portions 13 are pressed toward the inner side in the vicinity of each other to plastically deform the fastener element 10. The zipper element 10 is mounted (implanted) on the zipper tape 2.

In this case, in the fastener tape 2 of the first embodiment, the core cord portion 2a is disposed along the inner edge of the tape, and the fastener tape 2 is stretched in the longitudinal direction of the tape to apply tension to the fastener tape 2. In this state, the fastener element 10 is attached to the fastener tape 2 so as to sandwich the core cord portion 2a of the fastener tape 2 and sandwich it.

In particular, in the fastener element 10 of the first embodiment, the tooth body portion 12 is formed by the bridge portion 12a having a larger thickness of the element than the head portion 11a of the engaging head portion 11 on the tooth body portion 12. Increased strength. Therefore, at the time of attachment of the fastener element 10, even if the left and right leg portions 13 are pressed and plastically deformed, the tooth body portion 12 can be prevented from being easily deformed.

Thereby, the form of the fitting space portion 15 disposed on the meshing head portion 11 can be stably maintained. Moreover, at the same time, when the fastener element 10 is attached to the fastener tape 2 by the pressing process, the mounting position of the fastener element 10 can be effectively prevented from being displaced with respect to the fastener tape 2, or the fastener element 10 can be displaced. The posture is inclined with respect to the fastener tape 2 so that the fastener element 10 can be appropriately implanted in a proper posture at a specific position.

Further, since the bridge portion 12a is disposed on the fastener element 10 of the first embodiment, when the fastener element 10 is attached to the fastener tape 2, the core string portion 2a of the fastener tape 2 is subjected to the fastener element 10 Since the bridge portion 12a is pressed, it is possible to suppress the core cord portion 2a from bulging so as to bulge toward the side of the insertion space portion 15 of the fastener element 10.

Thereby, the core cord portion 2a of the fastener tape 2 can be prevented from intruding into the fitting space portion 15 of each of the fastener elements 10, and the space portion of the space portion 15 can be stably secured. Therefore, when the zipper is formed to engage the left and right fastener elements 10, the engaging projections 14 of the fastener element 10 of the engaging object can be stably fitted into the insertion space portion 15 of each of the fastener elements 10, thereby making it possible to The left and right zipper elements 10 are smoothly engaged in sequence.

Further, since the core cord portion 2a of the fastener tape 2 is pressed by the bridge portion 12a of the fastener element 10, when the left and right fastener elements 10 are engaged or disengaged, the fastener element 10 of the engaging object is not easily directly contacted. The core cord portion 2a of the zipper tape 2. Therefore, even if the opening and closing operation of the slide fastener by the sliding of the slider is repeated, the pile can be prevented from being generated on the core cord portion 2a of the fastener tape 2, whereby the occurrence of fluff due to the core cord portion 2a can be prevented. The problem of poor meshing of the zipper elements 10 is not prior.

Then, in the first embodiment, a plurality of fastener elements 10 are sequentially mounted on the side edges of the tape of the fastener tape 2 at a specific mounting pitch, thereby obtaining a chain tape as shown in FIG. 1. Further, the obtained fastener tape 1 is combined in a group of two, and a slider (not shown) is slidably attached to the fastener element rows of the left and right fastener tapes 1, thereby constituting the slide fastener.

In this case, in the first embodiment, the mounting pitch of the fastener element 10 in the longitudinal direction of the tape is made narrower than that of the conventional general chain 1 to constitute the fastener tape 1.

Specifically, as shown in FIG. 4 and FIG. 7, the size of the mounting pitch of the fastener element 10 is "P", and the interval between the outer peripheral faces of the fastener elements 10 adjacent to each other in the longitudinal direction of the tape is defined. When it is set to "D1", the link 1 is formed to satisfy the relationship of "D1 < (P-D1)". Here, the mounting pitch of the fastener element 10 is the interval between the center positions of the tape fasteners 10 in the longitudinal direction of the tape in the longitudinal direction of the tape (the direction of the sprocket thickness).

In this way, the relationship of "D1 < (P-D1)" is satisfied, that is, the size of the D1 is smaller than the outer side portion 12b of the tooth body portion 12 of each of the fastener elements 10 and the outer edge portion of the leg portion 13. In the manner of the thickness of the fastener element, the mounting pitch of the fastener element 10 is narrowed to form the fastener tape 1, whereby the fastener element 10 can be finely arranged in the longitudinal direction of the tape, so that it can be hardly seen in the fastener element row. A zipper tape 2 is formed between the fastener elements 10 of each of the fastener elements. Thereby, the outer surface of the fastener tape 1 can be improved, the design of the zipper can be improved, or a high-grade feeling can be imparted to the zipper.

Further, in the chain belt 1 of the first embodiment, the thickened portions 16 are provided on the upper surface side and the lower surface side of the respective fastener elements 10, so that the fastener elements 10 adjacent to each other in the longitudinal direction of the tape are When the interval between the tape clamping faces 18 of the portion (thin wall portion) in which the thickened portion 16 is provided is "D2", the relationship of "D1 < (P-D1)" is satisfied, and at the same time, The relationship of "D2>(P-D1)", in other words, the size of the above D2 can be made larger than the thickness of the sprocket of the outer edge portion of the leg portion 13 of each of the fastener elements 10.

That is, in the fastener tape 1 of the first embodiment, even if the mounting pitch is narrowed, the fastener element 10 is attached to the fastener tape 2, as shown in Figs. 5 and 6, due to the reduction of the respective fastener elements 10. The thick portion 16 becomes a non-contact portion of the tape that does not contact the fastener tape 2, so that the contact area of the fastener element 10 with respect to the fastener tape 2 can be reduced (in particular, the contact surface of the fastener tape 2 to the core portion 2a) product).

Therefore, in the first embodiment, the tape region (the tape region of each of the fastener elements 10 disposed between the tape clamping faces 18) which is not held by the fastener elements 10 between the fastener elements 10 can be used. The dimension in the longitudinal direction of the tape (i.e., the above "D2") is larger than the interval between the fastener elements 10 in the appearance (i.e., the above "D1").

Actually, in the case of the link belt 1 of the first embodiment, the size P of the mounting pitch of the fastener element 10 is set to be 2.11 mm or more and 2.20 mm or less, and the outer peripheral surface of the adjacent fastener element 10 is interposed. The interval D1 is set to be 0.96 mm or more and 1.00 mm or less. In this case, the sprocket thickness dimension (P-D1) of the outer edge portion of the leg portion 13 of each of the fastener elements 10 is set to be 1.11 mm or more and 1.24 mm or less, preferably 1.15 mm or more and 1.20 mm or less. Moreover, the interval D2 between the tape clamping faces 18 of the portion of the fastener element 10 adjacent to the reduced thickness portion 16 is set to 1.36 mm or more and 1.40 mm or less. In the case where the above dimensions are relatively indicated, when P is set to 100%, D1 is set in a range of 40% or more and less than 50%, and D2 is set to be 55% or more and 65% or less. Set within the range.

Thereby, the tape area of the fastener tape 2 between the fastener elements 10 is appropriately ensured, so that even if the mounting pitch of the fastener elements 10 is narrowed, the flexibility or the bendability of the fastener tape 1 can be suppressed from being lowered. . Further, at the same time, it is possible to suppress a decrease in the slidability of the slider due to a decrease in flexibility or flexibility of the fastener tape 1.

On the other hand, in the conventional case, when the mounting pitch of the fastener elements is narrowed to form a chain, as described above, when the tension of the fastener tape is released after the installation of the fastener element is completed, the zipper is broken. The difference in the amount of shrinkage between the fastener element mounting portion of the tape and the main body portion of the tape causes a problem of creping.

On the other hand, in the fastener tape 1 of the first embodiment, since the tape-bonding region between the fastener elements 10 is appropriately ensured as described above, the stretchability of the fastener element mounting portion of the fastener tape 2 can be appropriately ensured. Thereby reducing the amount of shrinkage between the element mounting portion and the main body of the tape with. Thereby, even if the chain pitch 1 is manufactured by narrowing the mounting pitch of the fastener element 10, the zipper of the fastener tape 1 is hard to generate|occur|produce.

Further, in the fastener tape 1 of the first embodiment, although the reduced thickness portion 16 is provided in each of the fastener element teeth 10, the outer side portion 12b of the tooth body portion 12 and the outer side edge portion of the left and right leg portions 13 have specific portions. Since the thickness is small, the thickened portion 16 of each of the fastener elements 10 is not easily seen from the outside. Therefore, in the first embodiment, there is no disadvantage that the outer surface of the zipper is deteriorated and the appearance is impaired by improving the flexibility of the fastener tape 1.

Moreover, since the outer side edge portions of the respective fastener elements 10 have a specific thickness dimension, when the slider of the slide fastener is slid in the lock direction, the respective fastener elements 10 entering the fastener guide path of the slider can be obtained. Appropriate contact with the sprocket guiding surface inside the slider. Therefore, the posture of each of the fastener elements 10 can be prevented from being inclined within the element guiding path of the slider, so that the left and right fastener elements 10 can be smoothly engaged.

Further, in the first embodiment, of course, the mounting pitch of the fastener element 10 may not be narrowed as described above, but the mounting pitch may be set to, for example, the same size as in the case of the conventional general chain, and The fastener element 10 is attached to the fastener tape 2, thereby constituting a fastener tape.

In this case, in the chain belt to which the fastener element 10 of the first embodiment is mounted, the tape area of the fastener tape 2 between the fastener elements 10 is larger than that of the conventional general chain, so that the chain is soft. Increased sex or bendability.

[Embodiment 2]

Fig. 8 is a perspective view showing the fastener element of the second embodiment. Fig. 9 is a plan view showing the fastener element, and Fig. 10 is a sectional view taken along line X-X of Fig. 9.

The fastener element 20 of the second embodiment includes metal as in the first embodiment, and includes an engaging head portion 21 including the engaging convex portion 24 and the fitting space portion 25, and a tooth body disposed at the rear end side of the engaging head portion 21. a portion 22; and a pair of left and right leg portions 23 that are branched from the rear end of the tooth body portion 22 into two.

Similarly to the first embodiment, the fastener element 20 of the second embodiment is also used as a bite. Each of the upper surface side and the lower surface side of the joint head portion 21 is formed by a pair of meshing convex portions 24 and double-sided fastener elements embedded in the space portion 25, and is opposed to the center position of the fastener element thickness direction. The ground is formed and formed bilaterally symmetrically with respect to the center position in the direction of the sprocket width.

The engaging head portion 21 includes: a thin flat-shaped head body 21a having a thickness smaller than a tooth portion; and a mountain-shaped engaging convex portion 24 protruding from an upper surface and a lower surface of the head body 21a; The upper surface side and the lower surface side of the head main body 21a are left and right extension portions 21b extending forward from the tooth body portion 22. Further, the left and right extending portions 21b have a larger sprocket thickness than the head body 21a at positions spaced apart from each other, and are disposed forward from the tooth portion 22.

The upper surface and the lower surface of the left and right extension portions 21b are disposed on the same plane as the upper surface and the lower surface of the left and right outer side portions 22b or the left and right outer side portions of the leg portion 22. Further, the inner side surfaces of the left and right extending portions 21b are formed so as to gradually increase in size in the sprocket width direction of each of the extending portions 21b as they approach the height position of the bottom surface 25a of the fitting space portion 25. Tilted wedge shape.

Further, in the engaging head portion 21, the fitting space portion 25 surrounded by the engaging convex portion 24, the left and right extending portions 21b, and the tooth body portion 22 is formed on the upper surface side and the lower surface side of the head body 21a, respectively. Each of the embedded space portions 25 includes a bottom surface 25a whose position in the thickness direction of the sprocket is set to be the same position as the upper surface and the lower surface of the head main body 21a.

In the tooth body portion 22 of the second embodiment, a bridge portion 22a is formed in a central portion of the tooth body portion 22 in the sprocket width direction, and is swelled from the bottom surface 25a of the insertion space portion 25 toward the thickness of the element teeth, and the chain The tooth thickness dimension is larger than the head body 21a of the engaging head portion 21 via the step, and includes the side portions 22b disposed on the left and right sides of the bridge portion 22a.

In this case, the bridge portion 22a of the tooth body portion 22 is disposed in the sprocket width direction so as to connect between the base end portions of the left and right leg portions 23. Further, the upper surface and the lower surface of the bridge portion 22a of the tooth body portion 22, the upper surface of the left and right outer side portion 22b of the tooth body portion 22, and the lower surface The faces form the same plane that is flat.

Further, in this case, the sprocket thickness dimension of the bridge portion 22a and the left and right outer side portions 22b of the tooth body portion 22 is set to the sprocket thickness dimension of the left and right extension portions 21b of the engaging head portion 21, and the left and right leg portions. 23 The outer side edge portion has a specific size of the same sprocket thickness. Further, the bridge portion 22a includes a wedge-shaped inclined surface that is inclined downward toward the front side of the embedded space portion 25.

The left and right leg portions 23 of the second embodiment are branched from the right and left sides via the strand portion 22c disposed at the rear end of the tooth body portion 22. Further, on the inner peripheral edge portion of the left and right leg portions 23, a recessed portion 23b for inserting one of the core cord portions 2a of the fastener tape 2 is provided in the thickness direction of the fastener element, and further, the front end portion of the left and right leg portions 23 is provided. In the (rear end portion), a hook-shaped bent portion 23a that is curved in a direction (inner side) that is close to each other is disposed.

The upper surface and the lower surface of the outer side edge portion of the left and right leg portions 23 are formed as flat surfaces which are parallel to each other, and the zipper is considered in consideration of the thickness direction of the sprocket between the upper surface and the lower surface of the outer side edge portion of the leg portion 23. The appearance or the contact with the slider when the slider slides is set to a specific size.

In the fastener element 20 of the second embodiment, the inner peripheral surface of the tooth body portion 22 and the left and right leg portions 23 are arranged in parallel with the thickness direction of the element teeth. The inner peripheral surface includes a distal end surface of the left and right leg portions 23 facing the inner side of the curved portion 23a (the center position side in the sprocket width direction), and the distal end surface of the curved portion 23a of the one (left side) leg portion 23 passes through the teeth. The body portion 22 is continuously disposed up to the distal end surface of the curved portion 23a of the other (right) leg portion 23. When the fastener element 20 is attached to the fastener tape 2, the inner peripheral surface becomes the tape clamping surface 28 which is in close contact with the fastener tape 2.

Further, in the second embodiment, the upper surface of the left and right leg portions 23 is disposed on the inner peripheral edge portion of the left and right leg portions 23 so as to be opposite to the upper surface side of the element teeth and the lower surface side of the element teeth. The reduced thickness portion 26 is reduced in size between the lower surfaces (i.e., the thickness of the element). Since the thickened portion 26 is disposed, the thickness of the sprocket in the region of the inner peripheral portion where the thickened portion 26 is disposed is small. The thickness of the sprocket on the outer edge portion of the left and right foot portions 23.

That is, the thickness of the tape nip surface 28 in the region where the thickened portion 26 is disposed is thinner than the thickness of the sprocket thickness of the outer edge portion of the left and right leg portions 23. In other words, the thickness of the tape nip surface 28 formed in the region where the thickened portion 26 is disposed is thinner than the thickness of the tape nip surface 28 in the region formed as the non-thickened portion 27 described below. unit.

In particular, the reduced thickness portion 26 of the second embodiment is partially provided on the continuous inner peripheral portion of the tooth body portion 22 and the left and right leg portions 23. In other words, the reduced thickness portion 26 of the second embodiment is disposed on the inner peripheral edge portion of the region of the leg portion 23 so as to be spaced apart from left and right. On the other hand, the base end portion of the left and right leg portions 23 and the inner peripheral edge portion of the rear end portion (the leg portion 22c) of the tooth body portion 22 are the same as the thickness of the sprocket having the outer edge portions of the left and right leg portions 23 It is configured not to reduce the thickness portion 27.

The thickened portion 26 of the second embodiment is recessed in such a manner that the upper surface and the lower surface of the left and right leg portions 23 except for the thickened portion 26 are formed on the side of the tape nip surface 28 so as to form a stepped shape in the notch. The recess. Further, when the fastener element 20 is viewed from the upper surface side or the lower surface side, the size of the formation region of the reduced thickness portion 26 from the tape clamping surface 28 is set to the outer side of the tape clamping surface 28 and the leg portion 23 The range of 5% or more and 50% or less of the minimum distance dimension between them is preferably 7% or more and 30% or less.

In the same manner as in the first embodiment described above, the fastener element 20 of the second embodiment is subjected to press working, edge trimming, and press working on the metal flat wire, and then to the self-flat angle. The sprocket-shaped metal piece punched out on the wire is manufactured by performing a grinding step, a coating step, or the like.

Then, as shown in FIG. 8, the fastener element 20 of the second embodiment which is manufactured in a state in which the pair of leg portions 23 are opened is inserted into the side edge portion of the tape of the fastener tape 2 to which the tension is applied. Further, the leg portions 23 are pressed, and the left and right leg portions 23 are pressed toward each other in the inner side direction to plastically deform the fastener element 20, thereby sandwiching the core string portion 2a of the fastener tape 2 and sandwiching it. It is attached to the zipper tape 2 in a manner that is incorporated.

At this time, in the fastener element 20 of the second embodiment, the strength of the tooth portion 22 is configured by Since the bridge portion 22a between the insertion space portion 25 and the tape nip surface 28 is improved, even if the left and right leg portions 23 are pressed, the tooth body portion 22 can be prevented from being easily deformed.

Then, a plurality of the fastener elements 20 of the second embodiment are sequentially attached to the side edges of the tape of the fastener tape 2 at a specific mounting pitch, thereby manufacturing a fastener tape.

In particular, in the second embodiment, the size of the mounting pitch of the fastener elements 20 is set to "P", and the interval between the outer peripheral surfaces of the fastener elements 20 adjacent to each other in the longitudinal direction of the tape is set to "D1". In the case of satisfying the relationship of "D1 < (P-D1)", the mounting pitch of the fastener element 20 is narrowed to manufacture a fastener tape, whereby the design of the zipper can be improved similarly to the case of the first embodiment described above. Sex, or give the zipper a sense of quality.

Further, in this case, since the thickened portion 26 is provided on the upper surface side and the lower surface side of each of the fastener element teeth 20, the tape of the portion of the adjacent fastener element 20 provided with the thickened portion 26 is sandwiched. When the interval between the faces 28 is "D2", in order to satisfy the relationship of "D2>(P-D1)", the size of D2 can be made larger than the outer side portion 22b and the left and right feet of the tooth body portion 22 of each of the fastener elements 20. At the same time, the contact area of each of the fastener elements 20 to the fastener tape 2 can be reduced.

Therefore, even if the mounting pitch of the fastener element 20 is narrowed as described above, the flexibility or the bendability of the fastener tape can be suppressed from being lowered, and the softness or the bendability of the fastener tape can be suppressed. The sliding property of the slider is reduced. Further, even if the fastener tape is manufactured as described above, creping is less likely to occur.

Further, in the fastener element 20 of the second embodiment, as described above, the reduced thickness portion 26 is disposed on the inner peripheral edge portion of the depressed portion 23b and the curved portion 23a of each leg portion 23, and the left and right leg portions 23 are provided. The base end portion and the rear end portion (the strand portion 22c) of the tooth body portion 22 are configured as the non-thickening portion 27. Therefore, compared with the fastener element 10 in which the thickened portion 16 is continuously disposed from the curved portion 13a of one leg portion 13 to the curved portion 13a of the other leg portion 13 as in the first embodiment described above, In the fastener element 20 of the second embodiment, the formation range of the reduced thickness portion 26 along the tape clamping surface 28 is limited.

Therefore, when the fastener element 20 of the second embodiment is attached to the fastener tape 2, since the formation range of the reduced thickness portion 26 is limited, each of the fastener elements 10 of the first embodiment is different from the fastener element 10 of the first embodiment. The contact area of the fastener element 20 to the fastener tape 2 becomes large, so that the mounting strength of the fastener element 20 can be increased.

As a result, the chain belt of the second embodiment is not only suitable for ensuring flexibility and flexibility as described above, but also is not easily slidable in the longitudinal direction of the tape with respect to the attachment position of the fastener tape 2, and the fastener element 20 can be made. Since the sliding strength is improved, the flexibility and flexibility of the fastener tape and the sliding strength of the fastener element 20 can be balanced.

Further, as described above, the reduced thickness portion 26 of the second embodiment includes a concave portion that is recessed so as to form a stepped shape on the side of the tape nip surface 28, but in the present invention, the shape of the reduced thickness portion 26 is It is not particularly limited. For example, as in the case of the above-described first embodiment, an inclined surface which is inclined downward toward the belt clamping surface may be included.

[Example 3]

Fig. 13 is a plan view showing the fastener element of the third embodiment.

In the fastener element 30 of the third embodiment, the formation range of the tape clamping surface 18 along the reduced thickness portion 36 provided on the tooth body portion 12 and the left and right leg portions 13 is the same as that of the fastener element 10 of the first embodiment. The configuration other than the formation range of the thickened portion 36 is the same as that of the fastener element 10 of the first embodiment.

Therefore, in the third embodiment, members and portions having substantially the same configuration and function as those of the fastener element 10 of the first embodiment are denoted by the same reference numerals and names as those of the first embodiment, and thus the description thereof is omitted. Detailed explanation.

The fastener element 30 of the third embodiment includes: an engaging head portion 11 including the engaging convex portion 14 and the fitting space portion 15; a tooth body portion 12 disposed on the rear end side of the engaging head portion 11; and a rear end portion of the tooth body portion 12 The pair of left and right leg portions 13 that are branched into two and extend, and are configured as double-sided fastener elements having a shape that is symmetrical with respect to the center position in the front-rear direction and the left-right direction.

The engaging head portion 11 includes: a flat head body 11a having a fixed sprocket thickness dimension; an engaging convex portion 14 protruding from the upper surface and the lower surface of the head main body 11a; and the head main body 11a The left side extension portion 11b extending from the tooth body portion 12 toward the front side on the front side and the lower surface side. Further, the upper surface side and the lower surface side of the meshing head portion 11 are surrounded by the engaging convex portion 14, the left and right extending portions 11b, and the tooth body portion 12, thereby forming the fitting space portion 15 including the bottom surface 15a.

The tooth body portion 12 includes a bridge portion 12a disposed at a central portion in the sprocket width direction, and a side portion 12b disposed on the left and right sides of the bridge portion 12a. In the front end portion of the left and right leg portions 13, a hook-shaped bent portion 13a which is curved in a direction (inner side) which is close to each other is disposed.

In the fastener element 30 of the third embodiment, the inner peripheral edge portion of the tooth body portion 12 and the inner peripheral edge portion of the proximal end portion of the left and right leg portions 13 are such that the thickness of the element is smaller than the outer side of the leg portion 13. The thickened portion 36 of the edge portion is disposed on the upper surface side of the element and the lower surface side of the element along the tape clamping surface 18. In the third embodiment, similarly to the case of the second embodiment, the thickened portion 36 is partially provided on the continuous inner peripheral portion of the tooth body portion 12 and the left and right leg portions 13.

On the other hand, the inner peripheral edge portion of the curved portion 13a of the left and right leg portions 13 and the inner peripheral edge portion of the portion (intermediate portion) between the curved portion 13a and the proximal end portion are provided with the outer edge portion of the leg portion 13 The same sprocket thickness dimension is formed by the non-thickness portion 37. That is, the thickness of the tape nip surface 18 formed in the region where the thickened portion 36 is disposed is thinner than the thickness of the tape nip surface in the region where the non-thickened portion 37 of the thickened portion 36 is not disposed. unit.

The reduced thickness portion 36 of the third embodiment includes a downwardly inclined surface which is gradually reduced in thickness of the fastener element toward the tape clamping surface 18. Further, when the fastener element 30 is viewed from the upper surface side or the lower surface side, the size of the formed portion of the reduced thickness portion 36 from the tape clamping surface 18 is set to the outer side of the tape clamping surface 18 and the leg portion 13 The range of 5% or more and 50% or less of the minimum distance dimension between them is preferably 7% or more and 30% or less. Furthermore, the reduced thickness portion 36 of the third embodiment may further include a concave portion whose bottom surface is not an inclined surface, but is opposite to the upper surface and the lower surface of the left and right foot portions 13 as in the case of the second embodiment. The side of the belt clamping surface 18 is formed by a notch It is concave in the way of difference.

In the fastener element 30 of the third embodiment, the side edge portion of the tape of the zipper tape 2 to which the tension is applied is inserted between the left and right leg portions 13, and the left and right leg portions 13 are brought closer to each other. The inner side direction is pressed to plastically deform the fastener element 30, thereby being attached to the fastener tape 2 so as to sandwich the core cord portion 2a of the fastener tape 2 and sandwich it.

At this time, in the fastener element 30 of the third embodiment, the strength of the tooth body portion 12 is increased by the bridge portion 12a disposed between the bottom surface 15a of the insertion space portion 15 and the tape clamping surface 18, so that even The left and right leg portions 13 are pressed, and the tooth body portion 12 is not easily deformed.

However, a plurality of the fastener elements 30 of the present embodiment 3 are sequentially attached to the side edges of the tape of the fastener tape 2 at a specific mounting pitch, thereby manufacturing a fastener tape.

In the third embodiment, as in the case of the first embodiment or the second embodiment, the mounting pitch of the fastener element 30 is narrowed to satisfy the relationship of "D1 < (P-D1)", and the fastener tape is manufactured. In this way, the design of the zipper can be improved, or the zipper can be given a high-grade feeling.

Further, in this case, since the thickened portion 36 is provided on the upper surface side and the lower surface side of each of the fastener element teeth 30, the flexibility or flexibility of the fastener tape can be suppressed even if the mounting pitch of the fastener element 30 is narrowed. Further, it is also possible to suppress a decrease in the slidability of the slider due to a decrease in flexibility or flexibility of the fastener tape. Further, even if the fastener tape is manufactured as described above, creping is less likely to occur.

Further, in the fastener element 30 of the third embodiment, as described above, the thickened portion 36 is disposed on the inner peripheral edge portion of the restricted portion of the fastener element 30, and the other inner peripheral portion is made non-thickened. Since the portion 37 is formed, the contact area of each of the fastener element teeth 30 with respect to the fastener tape 2 can be made larger than that of the fastener element 10 of the first embodiment, and the attachment strength of the fastener element 30 can be increased. Therefore, the fastener tape of the third embodiment can balance the flexibility and flexibility of the fastener tape with the sliding strength of the fastener element 30.

[Example 4]

Fig. 14 is a perspective view showing the fastener element of the fourth embodiment. Figure 15 is the zipper element Sectional view. Further, in FIGS. 14 and 15 , the fastener elements attached to the fastener tape (that is, the state in which the left and right leg portions are pressed inward and plastically deformed) are shown.

The fastener element 40 of the fourth embodiment is made of a metal such as a copper alloy, a nickel alloy or an aluminum alloy. Further, the fastener element 40 includes an engaging head portion 41 including an engaging convex portion 44 and an engaging concave portion 45, a tooth body portion 42 disposed on the rear end side of the engaging head portion 41, and a branch portion formed at the rear end of the tooth body portion 42. And a pair of left and right legs 43 extending.

The fastener element 40 is configured as a single-faced element that disposes the engagement convex portion 44 and the engagement concave portion 45 on the opposite sides of the meshing head portion 41, and is bilaterally symmetrical with respect to the center position in the sprocket width direction. Ground formation.

The engaging head portion 41 of the fourth embodiment includes: a head body 41a having a fixed thickness of a sprocket between the upper surface and the lower surface; and a mountain-shaped engaging convex portion protruding from a lower surface side of the head main body 41a 44; and an engaging recess 45 recessed on the upper surface side of the head body 41a. Further, the engaging convex portion 44 and the engaging concave portion 45 are disposed such that their respective positions correspond to each other.

The tooth body portion 42 is disposed in the longitudinal direction of the sprocket (front-rear direction), and is disposed from the position of the edge of the engagement recess 45 to the position of the tape nip surface 48. The upper surface of the tooth body portion 42 is disposed at a position raised from the bottom surface 45a of the engaging recess portion 45 in the thickness direction of the sprocket, and is formed in the same plane as the upper surface of the head body 41a.

The left and right leg portions 43 extend rearward from the tooth body portion 42 and are provided with hook-shaped bent portions 43a that are bent toward the mutually adjacent directions (inner side) at the front end portions (rear end portions) of the left and right leg portions 43. Further, the left and right leg portions 43 (excluding the reduced thickness portion 46 described below) include parallel and flat upper and lower surfaces, and the sprocket thickness between the upper surface and the lower surface of the leg portion 43 is set to be the meshing head. The thickness of the sprocket between the upper surface and the lower surface of the head body 41a of 41 and the thickness of the sprocket between the upper surface and the lower surface of the tooth body portion 42 are the same.

Further, in the fastener element 40 of the fourth embodiment, the tooth body portion 42 and the left and right leg portions 43 are provided. The inner circumferential surface is arranged in parallel with the thickness direction of the element teeth. When the fastener element 40 is attached to the fastener tape 2, the inner circumferential surface serves as a tape clamping surface 48 that is in close contact with the fastener tape 2.

Further, in the fourth embodiment, the thickened portion 46 having a thickness smaller than the outer edge portion of the leg portion 43 is formed on the inner peripheral portion of the left and right leg portions 43 along the tape clamping surface 48. The upper surface side of the fastener element and the lower surface side of the fastener element are arranged in an antisymmetric manner. In particular, the reduced thickness portion 46 of the fourth embodiment is continuously disposed from the distal end of the curved portion 43a of each leg portion 43 to the proximal end portion side of the leg portion 43.

On the other hand, the tooth body side end portion of the left and right leg portions 43 and the rear end portion (the thigh portion 42a) of the tooth body portion 42 have the same sprocket thickness dimension as the outer side edge portions of the left and right leg portions 43. The thick portion 47 is formed. That is, the thickness of the tape nip surface 48 formed in the region where the thickened portion 46 is disposed is thinner than the thickness of the tape nip surface in the region where the non-thickened portion 47 of the thickened portion 46 is not disposed. Wall.

The reduced thickness portion 46 of the fourth embodiment includes a concave portion that is recessed so as to form a stepped shape on the side of the tape nip surface 48. Further, when the fastener element 40 is viewed from the upper surface side or the lower surface side, the size of the formation region of the reduced thickness portion 46 from the tape clamping surface 48 is set to the outer side of the tape clamping surface 48 and the leg portion 43. The range of the minimum distance between the 5% or more and 50% or less.

The fastener element 40 of the fourth embodiment of the present invention is formed by cutting a metal wire having a substantially Y-shaped cross section and having a substantially Y-shaped cross section, and subjecting the sprocket material obtained by the dicing to a press working or the like to form a mesh. The convex portion 44, the engagement concave portion 45, and the thickened portion 46 are manufactured in a state in which the pair of left and right leg portions 43 are opened.

Alternatively, the fastener element 40 of the fourth embodiment can also be manufactured by pressing a metal flat-angle wire to form the engaging projection 44, the engaging recess 45, and the thickening portion 46 at a specific distance, The portion of the rectangular wire which has been subjected to the press working is punched out along the outer peripheral shape of the fastener element 40.

Then, the pull of the fourth embodiment is performed in a state in which the left and right pair of leg portions 43 are opened. In the chain element 40, the side edge portion of the tape to which the tension zipper tape 2 is applied is inserted between the left and right leg portions 43, and the left and right leg portions 43 are pressed toward the inner side toward each other to make the zipper. The sprocket 40 is plastically deformed, thereby being attached to the fastener tape 2 so as to sandwich the core cord portion 2a of the fastener tape 2 and sandwich it.

At this time, in the fastener element 40 of the fourth embodiment, the tooth body portion 42 is formed thicker by having the same sprocket thickness dimension as the outer peripheral portion of the head body 41a or the leg portion 43, Since the strength of the tooth body portion 42 is increased, even if the left and right leg portions 43 are pressed, the tooth body portion 42 can be prevented from being easily deformed.

Then, a plurality of the fastener elements 40 of the fourth embodiment are sequentially attached to the side edges of the tape of the fastener tape 2 at a specific mounting pitch, thereby manufacturing a fastener tape.

The fastener tape manufactured in this manner has the thickened portion 46 formed on the upper surface side and the lower surface side of the inner peripheral portion of the left and right leg portions 43 of the respective fastener elements 40, so that the fastener elements of the respective fastener elements 40 can be reduced. With 2 contact area. Thereby, the tape attachment region which is not sandwiched by the fastener element 40 can be enlarged on the fastener element mounting portion of the fastener tape 2, and the flexibility or flexibility of the fastener tape can be improved.

Further, since the tooth body portion 42 of each of the fastener element teeth 40 and the outer side edge portion of the left and right leg portions 43 have a specific thickness dimension, when the fastener element 40 is attached to the fastener tape 2 to form a slide fastener, the zipper is used. In the plan view, the thickened portion 46 of each of the fastener elements 40 is not easily seen by the outer edge portions of the tooth body portion 42 and the left and right leg portions 43, thereby reducing the appearance or appearance of the zipper portion of the thickened portion 46. influences.

Further, for example, when the slide fastener of the slide fastener is slid in the lock direction, the respective fastener element 40 that has entered the fastener guide path of the slider can be brought into proper contact with the fastener element guide surface inside the slider. Therefore, the posture of each of the fastener elements 40 can be prevented from being inclined within the element guide path of the slider, so that the left and right fastener elements 40 can be smoothly engaged.

Further, the reduced thickness portion 46 of the fourth embodiment may be formed to have the position or shape as described in the first to third embodiments. Moreover, in the embodiments 1 to 4, on the fastener element Although the case where the thickened portion is formed antisymmetrically on the inner peripheral portion of the lower two faces has been described, the reduced thickness portion may be formed only on the sprocket side of either the upper surface and the lower surface.

10‧‧‧zipper teeth

11‧‧‧Meshing head

11a‧‧‧ head body

11b‧‧‧Extension

12‧‧‧The tooth body

12a‧‧‧Bridge

12b‧‧‧Outside

12c‧‧‧ shares

13‧‧‧foot

13a‧‧‧Bend

14‧‧‧Meshing convex

15‧‧‧Internal space department

15a‧‧‧ bottom

16‧‧‧Thickening Department

17‧‧‧ Non-reduction department

18‧‧‧ cloth belt clamping surface

Claims (12)

A fastener element characterized in that it is a metal fastener element (10, 20, 30) and includes an engaging head portion (11, 21) disposed on one end side of the engaging head portion (11, 21). a tooth body portion (12, 22) and a pair of right and left leg portions (13, 23) branched from one end of the tooth body portion (12, 22), the engaging head portion (11, 21) including a thin plate-shaped head main body (11a, 21a) including a first main surface and a second main surface opposite to the first main surface; and an engaging convex portion (14, 24) protruding from the head The first main surface and the second main surface of the main body (11a, 21a); and the embedding space portion (15, 25) disposed on the first main surface side and the second main surface side of the meshing convex portion (14, 24) and the above-mentioned tooth body portion (12, 22), the engaging convex portion (14, 24) for engaging the object side is embedded; the tooth body portion (12, 22) and the left and right foot portions are The inner peripheral surface of (13, 23) includes a tape clamping surface (18, 28), and the tooth body portion (12, 22) includes a bridge portion (12a, 22a) attached to the embedded space portion (15) , 25) and the above-mentioned tape clamping surface (18, 28), from the above-mentioned embedded space portion ( 15,25) the bottom surface (15a, 25a) is raised in the thickness direction of the sprocket, and is connected between the left and right leg portions (13, 23), the tooth body portion (12, 22) and the left and right foot portions ( 13,23) including an inner peripheral edge portion disposed along the tape nip surface (18, 28) and an outer side edge portion disposed along the left and right sprocket outer side surfaces, wherein the first main portion is on the outer edge portion The thickness dimension between the surface and the second main surface is fixed, and the thickness is arranged on at least a part of the inner peripheral edge portion on the first main surface side and the inner peripheral edge portion on the second main surface side. a reduced thickness portion (16, 26, 36) having a smaller size than the outer edge portion. A fastener element characterized in that it is a metal fastener element (40), and includes an engagement head portion (41), a tooth body portion (42) disposed on one end side of the engagement head portion (41), and a pair of right and left leg portions (43) branched from one end of the tooth body portion (42), the engaging head portion (41) comprising: a head body (41a) including a first main surface and The first main surface is a second main surface on the opposite side; the engaging convex portion (44) is protruded from the first main surface of the head main body (41a); and the engaging concave portion (45) is opposed to The second main surface of the head body (41a) is recessed to have a bottom shape; and the inner peripheral surface of the tooth body portion (42) and the left and right leg portions (43) includes a tape clamping surface (48), wherein the tooth body portion (42) and the left and right leg portions (43) include an inner peripheral edge portion disposed along the tape ferrule surface (48) and a left and right sprocket outer side surface The outer edge portion has a thickness dimension between the first main surface and the second main surface fixed to the outer edge portion, and the inner peripheral portion on the first main surface side and the second main surface side Inner peripheral portion At least a portion, is disposed above the reduced-thickness portion of reduced thickness dimension than the outer edge portion (46). The fastener element of claim 1 or 2, wherein said thickened portion (16, 36) comprises an inclined surface or a curved surface which is gradually reduced in thickness dimension toward said tape clamping surface (18). The fastener element according to claim 1 or 2, wherein the thickened portion (26, 46) is formed on the side of the tape clamping surface (28, 48) to form a stepped recess. The fastener element of claim 1 or 2, wherein said thickened portion (16) is from a front end portion of said one leg portion (13) via a thigh portion (12c) disposed on said tooth body portion (12) until another One of the front ends of the leg portions (13) is continuously arranged. A fastener element according to claim 1 or 2, wherein said thickened portion (26, 36, 46) is partially disposed on a portion of said inner peripheral portion. The fastener element according to claim 6, wherein the thickened portion (36) is disposed at a base end portion of the left and right leg portions (13) and a strand portion (12c) disposed on the tooth body portion (12) On a continuous area. The fastener element of claim 6, wherein the thickened portions (26, 46) are respectively disposed at front ends of the left and right leg portions (23, 43). The fastener element of claim 1 or 2, wherein said thickened portion (16, 26, 36, 46) is sandwiched by said tape when viewed from above in said fastener element (10, 20, 30, 40) The surface (18, 28, 48) is disposed at a size of 5% or more and 50% or less of the size between the outer surfaces of the leg portions. The fastener element of claim 1 or 2, wherein the thickened portion (16, 26, 36, 46) is disposed on both sides of the first main surface and the second main surface, and is disposed opposite to each other. A fastener tape characterized in that the above-mentioned fastener element (10, 20, 30) according to any one of claims 1 to 10 is applied to the side edge of the tape of the zipper tape (2). Arranged at a specific distance in the longitudinal direction, the size of the above-mentioned pitch of the fastener elements (10, 20, 30) is P, and the outer periphery of the above-mentioned fastener elements (10, 20, 30) adjacent to each other When the interval between faces is set to D1, the relationship of D1 < (P - D1) is satisfied. The chain belt of claim 11, wherein D2>(P) is satisfied when the interval between the tape clamping faces (18, 28) of the fastener elements (10, 20, 30) adjacent to each other is set to D2. -D1) relationship.