JP2003210210A - Fastener attached by embedding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase attaching strength to a material by an embedded part of a fastener, attached to the material through the embedded part provided on the backside of a strip-shaped base part. <P>SOLUTION: The fastener 10 is equipped with an engaging part 18 provided on a main surface 12 of the strip-shaped base part 16 and the embedded part 20 provided on the backside 14 of the base part 16. The embedded part 20 is equipped with a plurality of posts 44 provided vertically to the backside 14, a plurality of anchors 46 extending parallel to the backside 14 at the end of the post 44, and a plurality of thrusting elements 48 connected to the outer periphery of the anchor 46 in an incorporated manner and extended parallel to the backside 14 in a direction of the substantial width of the base part 16. Each thrusting element 48 has a free end region with dimensions to protrude into the side of the base part 16 for a prescribed length. Embedding the plurality of the posts 44, the anchors 46, and the thrusting elements 48 in a main molded body fixes the fastener 10 to the main molded body with the engaging part 18 exposed. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fastener integrally attached to an object via an embedded portion provided on the back surface of a belt-shaped base.

[0002]

2. Description of the Related Art Vehicle seats, office or home chairs,
In an article, such as a mattress, having a cushioning core material made of a molded product of a foamable resin material and a soft covering material made of cloth or leather for covering the surface of the core material, the covering material is used as a core. It is known to use a face-to-face fastener (so-called hook-and-loop fastener) in which a plurality of engaging elements are arranged on one surface of the base portion, that is, a main surface, for fixing to a material. Particularly in articles such as seats and chairs, it is desired to provide the user with a high level of comfort. Therefore, as a fixing means for fixing the covering material to the core material, the core material along the seams of the covering material is used. There is a tendency to use a flexible belt-shaped fastener which can be arranged in a long and narrow groove formed on the surface (for example, see JP-A No. 11-127915). In such a usage mode, the belt-like fastener fixes the covering material to the core material by detachably engaging the engaging element group with the mating engaging portion such as a fiber loop provided in the covering material. .

In order to fixedly install this type of belt-shaped fastener at a desired position on the surface of the core material with the engaging element group exposed, the fastener is inserted as an insert in the mold of the core material which is the main body of molding. The insert molding method of arranging and fixing the fastener to the core material simultaneously with molding of the core material can be advantageously applied. In this insert molding method, an extension rail-shaped guide that holds the fastener in a predetermined posture is laid in a mold that is a molding main body. The guide typically has an elongated groove that can accommodate the base of the fastener and the group of engaging elements,
The fastener is installed in the guide with the back surface (the surface opposite to the main surface) of the base being exposed by inserting the engagement element group and the base into the groove.

The back surface of the base portion of the fastener is provided with an embedding portion which is fixedly embedded in the molding body through an insert molding process. Therefore, the fastener is integrally attached to the molding body through the embedding portion. To be Conventionally, the embedded part has a plurality of posts that are erected upright on the back surface of the base part,
A thin plate-shaped anchor is formed at the tip of each post and extends substantially parallel to the back surface. Each anchor has an oval-shaped contour that does not protrude in the width direction on the back surface of the base. The molding main body is molded in a form that is adjacent to the back surface of the base and surrounds the plurality of posts and anchors, whereby each anchor is in a state of biting into the molding main body, and the fastener is fixed to the molding main body.

[0005]

SUMMARY OF THE INVENTION In the above-mentioned conventional band-shaped fastener, not only can a desired level of fixing force of the engaging element group with the mating engaging portion be secured, but also an object through the embedded portion can be secured. It is necessary to secure sufficient mounting strength for the (molding body). Considering the form in which the fastener is used as a fixing means for fixing the covering material to the core material in the seat or chair described above, tension is intermittently applied to the covering material due to frequent and rapid movement of the center of gravity of the seated person. When the cover material is intentionally peeled off from the core material for the purpose of replacement or replacement, the fixing force exerted by the engagement element group is greater than the fixing force exerted by the engagement element group in order to prevent the destruction of the interconnection portion between the fastener and the core material. The mounting strength exerted by the embedded portion is required to be greater. From such a point of view, in the conventional belt-shaped fastener, it is a problem to improve the attachment strength of the embedded portion to the object as much as possible without impairing the inherent flexibility of itself.

Therefore, an object of the present invention is to provide a fastener integrally attached to an object via an embedding portion provided on the back surface of a strip-shaped base portion, without impairing the inherent flexibility of the fastener itself. It is an object of the present invention to provide a fastener that can improve the attachment strength to an object as much as possible.

[0007]

In order to achieve the above object, the invention according to claim 1 is provided on a belt-shaped base having a main surface and a back surface opposite to the main surface, and a main surface of the base. In a fastener comprising an engaging portion and an embedded portion provided on the back surface of the base portion, which is configured to be integrally attached to an object via the embedded portion, the embedded portion is arranged in a longitudinal direction of the base portion. A fastener characterized in that it comprises a plurality of overhanging elements spaced apart from one another and each extending from the base in a substantially widthwise direction of the base.

A second aspect of the present invention provides the fastener according to the first aspect, wherein each of the overhanging elements is integrally formed with the base portion. The invention according to claim 3 provides the fastener according to claim 1, wherein each of the overhanging elements is detachably installed on the base portion.

According to a fourth aspect of the present invention, in the fastener according to any one of the first to third aspects, the plurality of overhanging elements are arranged at equal intervals in the longitudinal direction of the base, and the overhanging elements are Provides fasteners that project symmetrically on both sides of the base. The invention according to claim 5 is the fastener according to any one of claims 1 to 4, wherein each of the overhanging elements is
Provided is a fastener having a substantially flat outer surface that extends parallel to the back surface on the side remote from the back surface.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Corresponding components are designated by common reference numerals throughout the drawings. 1 to 4
1 shows a fastener 10 according to the first embodiment of the present invention. The fastener 10 is a face-to-face engaging type fastener having flexibility in multiple directions, and has a strip-shaped base portion 16 having a main surface 12 and a back surface 14 on the opposite side thereof, and an engaging portion provided on the main surface 12 of the base portion 16. 18 and an embedding portion 20 provided on the back surface 14 of the base portion 16.

The base portion 16 is provided with a plurality of box-shaped portions 22 which are aligned in the longitudinal direction and are spaced apart from each other, and a plurality of connecting portions 24 which integrally connect the box-shaped portions 22 to each other.
Each box-shaped portion 22 has a flat upper plate portion 26 and a lower plate portion 28 that extend substantially parallel to each other, and upper and lower plate portions 26, 28.
A pair of side plate portions 30 that connect the two to each other, and a partition plate portion 3 that extends in the longitudinal direction between the plate portions 26, 28, 30.
2 and has a substantially hollow structure. The main surface 12 of the base 16 is formed by the upper plate portions 26 of the plurality of box-shaped portions 22. The back surface 14 of the base portion 16 is formed by the cooperation of the lower plate portions 28 of the plurality of box-shaped portions 22 and the plurality of connecting portions 24.

The engagement portion 18 comprises a plurality of engagement elements 34 which are erected on the main surface 12 of the base 16 in a regularly spaced arrangement. The same number (7 in the figure) of the engagement elements 34 are provided on the upper plate portions 26 of the plurality of box-shaped portions 22 that form the base portion 16.
They are provided in the same arrangement. Each engagement element 34 has a leg portion 36 protruding substantially upright from the upper plate portion 26 of each box-shaped portion 22.
And a plurality of (four in the figure) engagement pieces 38 that project laterally in the vicinity of the tips of the leg portions 36. Fastener 10
The plurality of engaging elements 34 of the engaging portion 18 are frictionally engaged with the corresponding engaging portions provided on the other object by the engaging pieces 38 at the tips of the engaging elements 34, so that they are detachably fixed to the other object. To be done. In addition, the desired box-shaped portion 2 of the base portion 16 (both ends in the longitudinal direction in the figure)
2, the engagement element 34 can be omitted.

A slit 40 extending in the transverse direction is formed in the lower plate portion 28 of each box-shaped portion 22 substantially at the center in the longitudinal direction. Further, in the lower plate portion 28, one rib 42 extending in the longitudinal direction across the slit 40 is provided on the back surface 14 so as to project over the entire length of the base portion 16. In the rib 42, two thin plate-shaped posts 44 extending along the rib 42 are provided upright on the back surface 14 so as to be two for each box-shaped portion 22. At the tip of each post 44, a thin plate-like anchor 46 extending substantially parallel to the back surface 14 is formed. Each anchor 46 has an oval contour that does not protrude in the width direction on the back surface 14 of the base 16. The plurality of posts 44 and anchors 46 function as an embedding portion 20 for fixedly attaching the fastener 10 to a desired object.

In the fastener 10 having the above structure, the base portion 16 is bent relatively easily as a whole in the horizontal direction, that is, in the direction substantially parallel to the main surface 12 and the back surface 14 due to the stress dispersion action in each box-shaped portion 22 having a hollow structure. Can be tuned. Also, the hinge action of each thin connecting portion 24 allows the base portion 16 to be bent relatively easily as a whole in the vertical direction, that is, in the direction substantially orthogonal to the main surface 12 and the back surface 14. As described above, the fastener 10 can easily flex the base 16 in both the horizontal direction and the vertical direction, so that the base 16 can be accurately and three-dimensionally located at a desired surface portion of an object having various three-dimensional surfaces. It can be installed following. The fastener 10 is preferably integrally formed from a resin material such as nylon or polypropylene.

As a characteristic structure of the fastener 10 according to the present invention, the embedding portion 20 further includes a plurality of overhanging elements 4 which are discretely arranged at intervals in the longitudinal direction of the base portion 16.
8 is provided. In the illustrated embodiment, each of the overhanging elements 48 has a rod-like shape, and is integrally connected to the outer peripheral edge of the anchor 46 provided on the back surface 14 of the base 16 at one longitudinal end thereof to form the back surface 14 The base portion 16 is extended substantially parallel to the width direction of the base portion 16. Also, each overhang element 48 is dimensioned to overhang a predetermined length laterally of the base 16 in its free end region.

In the embodiment shown in FIGS. 1 to 3, a plurality of overhanging elements 48 are connected to each of a plurality of anchors 46 arranged on the back surface 14 of the base 16 at substantially equal intervals in the longitudinal direction. The anchor 46 is formed so as to project symmetrically from both side edges of the anchor 46 to both sides of the base portion 16. As a result, the overhanging elements 48 are arranged at equal intervals in the longitudinal direction of the base 16 and symmetrically with respect to each other on both sides of the base 16. In this configuration, when the fastener 10 is attached to the object via the embedding portion 20 as described below, the plurality of overhanging elements 48 exert a uniformly balanced attachment strength over the entire fastener 10.

Alternatively, as shown in FIG. 4, of the plurality of anchors 46 provided on the back surface 14 of the base 16, only the desired anchor 46 may be provided with the overhanging element 48.
In this case, at the site corresponding to the anchor 46 where the overhanging element 48 is formed, the base 1 for the object exerted by the embedding section 20.
The mounting strength of 6 can be locally increased. In addition,
Each anchor 4 is provided on the assumption that the balance of the mounting strength in the width direction of the base 16 is not significantly impaired.
It is also possible to form one overhang element 48 in each of the six.

The fastener 10 is a guide 50 shown in FIG.
It is integrally attached to a molding body having a desired shape through an insert molding process described later using.

The guide 50 is a rail-shaped block body which supports the fastener 10 over a desired length, and the bottom wall portion 5
2 and a pair of side wall portions 54 integrally provided upright from the bottom wall portion 52 along both edges of the bottom wall portion 52 extending in the longitudinal direction. The bottom wall portion 52 and the pair of side wall portions 54 form a single groove portion 56 capable of accommodating the base portion 16 and the plurality of engaging elements 34 of the fastener 10 over the entire length of the guide 50. Both side wall portions 54 have inner surfaces 54a facing each other at regular intervals over the entire length of the guide 50. The bottom wall portion 52 has a pair of sealing surfaces 52 that are orthogonal to the inner surfaces 54 a of the both side wall portions 54 in both longitudinal end regions of the guide 50.
a and the guide 50 adjacent to the inner surface 54a of each side wall 54.
And a pair of auxiliary support surfaces 52b extending in the longitudinal direction. The groove portion 56 includes a first portion 56a capable of accommodating the base portion 16 of the fastener 10 between the inner surface 54a of the side wall portions 54 above the sealing surface 52a and the auxiliary supporting surface 52b, and the sealing surface 52a and the auxiliary supporting surface 52a. A second portion 5 capable of accommodating a plurality of engagement elements 34 of the fastener 10 below the surface 52b.
6b in terms of function.

The mutual distance between the inner surfaces 54a of the side wall portions 54 is
It is formed to have substantially the same size as the widthwise dimension of the base portion 16 of the fastener 10 that is an object to be supported. Therefore, when the fastener 10 is properly accommodated in the groove portion 56 of the guide 50, the inner surface 54a of each side wall portion 54 has a side edge extending in the longitudinal direction of the base portion 16 of the fastener 10 received by the first portion 56a of the groove portion 56. Close to. In addition, the pair of sealing surfaces 5 of the bottom wall portion 52
2a is a box-shaped portion 22 at both ends in the longitudinal direction of the fastener 10.
The main surface 12 (without the engagement element 34) is abutted substantially intimately.

In this way, the guide 50 fits the fastener base portion 16 into the first portion 56a of the groove portion 56 and the fastener engaging portion 18 into the second portion 56b of the groove portion 56.
The fastener 10 can be held in a predetermined posture by a frictional force while the engaging element group 34 is accommodated. As a result, when the molding main body is molded with the fastener 10 supported by the guide 50, infiltration of the liquid material into the second portion 56b of the groove 56 is prevented. Also fastener 10
While being properly held by the guide 50,
A plurality of overhanging elements 48 of the projections project outwardly beyond the side walls 54 of the guide 50 in their free end regions. The guide 50 can be integrally manufactured by cutting from a metal rod-shaped material such as aluminum, aluminum alloy, or iron.

FIG. 5 illustrates an article 60 in which the fastener 10 is integrally attached to the molding body 58 by an insert molding process using the guide 50. In the illustrated example, the article 60 constitutes a vehicle seat, and the molding main body 58 constitutes a core material made of a foaming resin material such as polyurethane. In this configuration, the plurality of fasteners 10 function as fixing means for fixing the covering material 62 made of cloth, leather, or the like to the molding main body 58. Each fastener 10 is fixedly arranged in an elongated recess 64 formed in the surface of the molding main body 58 at a position along a desired seam 62a of the covering material 62.

During the insert molding process, a number of guides 50 corresponding to the number of fasteners 10 to be mounted on the article 60 are provided in the mold (not shown) of the molding body 58 on the surface of the molding body 58. The fastener 10 is laid in an arrangement corresponding to the arrangement of the fastener 10. Each guide 50 has a groove 5
6 (FIG. 4) toward the cavity of the mold, putty on the molding surface of the mold,
It is fixed by fixing means such as bolts and magnets. Each fastener 10 inserts the plurality of engaging elements 34 of the engaging portion 18 into the second portion 56b of the groove portion 56 of the guide 50, and
The plurality of box-shaped portions 22 of the base portion 16 are fitted into the first portions 56a of the groove portions 56 of the guide 50 and installed in the corresponding guide 50. As a result, the back surface 14 of the base portion 16 of each fastener 10, the rib 42 and the embedding portion 20 protruding from the back surface 14 are provided.
(Plurality of posts 44, anchors 46 and overhanging elements 48)
Are exposed in the cavity of the mold.

In this state, the foamable liquid resin material of the molding body 58 is supplied to the cavity of the mold. Meanwhile, as described above, the base portion 16 of the fastener 10 is in close contact with the pair of inner surfaces 54a, the sealing surface 52a, and the auxiliary support surface 52b of the guide 50, and the liquid resin material for the second portion 56b of the groove portion 56 of the guide 50 is provided. Prevent the invasion of. After that, when the liquid resin material is foamed and solidified to mold the molding main body 58, the recesses 64 are formed on the surface of the molding main body 58 at positions corresponding to the spaces occupied by the guides 50 in the cavity of the mold. It is formed.

Then, as shown in an enlarged view in FIG. 6, in each recess 64, the fastener 10 includes a base portion 16 (excluding the main surface 12) and an embedded portion 20 (a plurality of posts 44, anchors 4).
6 and the overhanging element 48) are embedded in the molding body 58, so that the plurality of engaging elements 34 of the engaging part 18 are fitted into each recess 64.
It is fixed to the molding main body 58 while being exposed in the internal space of the. In this state, in each fastener 10, the plurality of engaging elements 34 exposed in each recess 64 have the stitches 62 a of the covering material 62.
Detachably engages with a corresponding engagement element 66 formed on the back surface of the, for example, a group of fiber loops, whereby the dressing 6
2 is fixed to the surface of the molding body 58 (see FIG. 7).

Through the insert molding process, the molding main body 58 is molded into a form that substantially surrounds the plurality of posts 44, anchors 46, and overhanging elements 48 that constitute the embedded portion 20 of the fastener 10. At this time, fastener 1
A plurality of overhanging elements 48 which overhang both sides of the base 16 of 0
Will be in a state of biting from the recess 64 of the forming main body 58 to the further outside forming portion (FIGS. 6 and 7). as a result,
The fastener 10 is fixed to the molding body 58 with a sufficiently large attachment strength as compared with a conventional fastener having an oval-shaped anchor that does not protrude from the base as an embedded portion.
Therefore, according to the fastener 10, for example, when it is used in the above-mentioned vehicle seat, the tension is unintentionally applied to the covering material 62 due to the frequent and rapid movement of the seated person's center of gravity, or the covering is intentionally covered for the purpose of replacement or the like. Under the tension applied to the material 62, the interconnection portion (embedded portion 2) between the fastener 10 and the molding body 58.
It is possible to reliably prevent breakage of the molding material portion around 0), so that the covering material 62 is accurately and stably detached from the fastener 10. Also, when taking out the molding main body 58 from the mold after the insert molding process,
Since the fastener 10 is smoothly detached from the guide 50, there is an advantage that the molding main body 58 can be easily taken out.

Moreover, in the fastener 10, since the plurality of overhanging elements 48 are discretely arranged at intervals in the longitudinal direction of the base portion 16, the presence of the overhanging elements 48 causes the presence of the above-described tertiary shape of the base portion 16. Impairment of the original flexibility is avoided. Also, the individual overhanging elements 48 are
Since the size of the embedded portion 20 disposed on the back surface 14 of the No. 6 is enlarged in the width direction, the user can recognize the presence of the fastener 10 by touch, as in the application to the vehicle seat described above. Even when it is used, the embedded part 2 can be used without impairing the texture.
The fastener attachment strength of 0 can be improved as much as possible. Further, since the plurality of overhanging elements 48 can be integrally formed with the base 16 by, for example, an injection molding process, it is possible to avoid an increase in the number of parts.

The overhanging element provided in the embedded portion of the fastener according to the present invention can have various shapes on the assumption that the above-mentioned required mounting strength can be secured. In particular, as shown in FIG. 8, in the configuration in which the round bar (cylindrical or elliptic cylinder) -shaped overhanging element 48 is connected to the oval-shaped anchor 44, the anchor 44 itself is located on the side away from the rear surface 14 of the base 16. By having the substantially flat outer surface 44a extending parallel to the back surface 14, the following effects are exhibited during the fastener installation work for the guide 50 described above. That is, when the worker manually installs the fastener 10 on the guide 50 described above, on the surfaces 44a of the plurality of anchors 44 that are aligned and arranged adjacent to each other in the longitudinal direction of the fastener 10,
A finger or a jig can be contacted and smoothly slid in the longitudinal direction. By such a smooth sliding operation, the base portion 16 of the fastener 10 can be quickly and gradually pushed into the groove portion 56 of the guide 50.

It should be noted that, as shown in FIG. 9, the oval-shaped anchor 44 is omitted, and the entire anchor function portion is constituted by the rod-shaped overhanging element 68, or as shown in FIG. It is also possible to employ a strip-shaped projecting element 70, or as shown in FIG. 11, a rhomboidal plate-shaped projecting element 72 as a whole.

Further, in the above-described embodiment, the dimensional relationship between the base portion 16 and the overhanging element 48 for ensuring the required mounting strength can be selected as follows. For example, when the dimensional relationship between the base portion 16 and the overhanging element 48 in the longitudinal direction of the fastener 10 is expressed by the longitudinal dimension A of one box-like portion 22 of the base portion 16 and the width B of each overhanging element 48. (FIG. 2), it is desirable that the range is 0.1 ≦ B / A ≦ 0.4. Further, the dimensional relationship between the base portion 16 and the overhanging element 48 in the width direction of the fastener 10 is expressed by the widthwise dimension C of the base portion 16 and the distance D between both ends of the pair of overhanging elements 48 (FIG. 3). It is desirable to select in the range of 1 ≦ D / C ≦ 6.

The plurality of overhanging elements of the fastener according to the present invention are not limited to the above-mentioned structure integrally formed on the base,
It may be configured to be detachably installed on the base.
FIG. 12 shows a fastener 78 according to a second embodiment of the invention with a separate anchor member 76 having such a flared element 74. Note that the fastener 78 has substantially the same configuration as the fastener 10 described above except for the configuration of the projecting element 74, and therefore, corresponding components are designated by common reference numerals and description thereof is omitted.

As shown in FIG. 13, the anchor member 76.
Is a pair of flat plate-shaped projecting elements 74 having a contour of an isosceles triangle, and square bar-shaped beams that connect the projecting elements 74 to each other in a symmetrical arrangement with their apex angle portions facing the opposite side. A portion 80 and a flat plate-shaped mounting portion 82 formed substantially at the center in the longitudinal direction of the beam portion 80 between the two overhanging elements 74 are integrally provided. The mounting portion 82 is formed with two sets of hooking elements 84 and 86 projecting to both sides of the beam portion 80. The pair of hanging elements 84, 86 is composed of a small hanging element 84 having a substantially right-angled triangular contour and a large hanging element 86 having a substantially rectangular contour. The two hooking elements 84, 86 are located on the side where the hypotenuse part of the small hooking element 84 is away from the large hooking element 86, and the fastener 78 of the fastener 78 is provided between the hooking elements 84, 86. It is arranged so as to form a gap slightly larger than the thickness of the post 44 provided on the back surface 14 of the base portion 16. The two sets of hanging elements 84, 86 are arranged symmetrically with respect to each other about the beam portion 80.

The anchor member 76 has its beam portion 80
The fastener 78 is detachably attached to the back surface 14 side of the fastener 78 in a relative arrangement in a direction substantially orthogonal to the rib 42 provided on the base rear surface 14 of the fastener 78. That is, the beam portion 80 of the anchor member 76 is the base rear surface 14 of the fastener 78.
The mounting portion 82, which is inserted between a pair of adjacent oval-shaped anchors 46 provided at the center of the beam portion 80 in the longitudinal direction, is hooked on the pair of posts 44 supporting the anchors 46 ( (Fig. 12). Here, the mounting portion 82
Is inserted between the posts 44 with pressing force such that the hypotenuse portions of the pair of small engaging elements 84 first come into contact with the posts 44. As a result, the corresponding posts 42 are snap-fitted into the gaps between the hooking elements 84, 86 of each set while the posts 44 are elastically deformed. In this way, when the anchor member 76 is properly attached to the rear surface 14 of the base of the fastener 78, the pair of overhanging elements 74 are arranged so as to project on both sides in the width direction of the base 16 as a whole.

The fastener 78 having the above-described structure undergoes the above-described insert molding process, and the molding main body 58 (FIG. 6).
It is integrally attached to. At this time, the plurality of posts 44 and the anchors 46 of the fastener 78 are embedded in the molding main body 58, and in particular, both the overhanging elements 74 of the anchor member 76 mounted on the pair of adjacent posts 44 are arranged as shown in FIG.
Like the overhanging element 48 shown in FIG. As a result, the fastener 78 has a sufficiently large attachment strength as compared with a conventional fastener having an oval-shaped anchor that does not protrude from the base as an embedded portion.
Are fixed to the molding body 58. As described above, it will be understood that the fastener 78 also has the same operation and effect as the fastener 10.

Further, according to the fastener 78, there is an advantage that a desired number of anchor members 76 can be selectively mounted at a desired longitudinal position with respect to the existing fastener base portion. According to this configuration, even when the fastener mounting strength to the molded body required in the article to which the fastener 78 is applied varies depending on the mounting location,
The optimum fastener attachment strength can be easily obtained.

The overhanging element of the anchor member mounted in the embedded portion of the fastener according to the present invention can have various shapes on the assumption that the required mounting strength can be secured. For example, as shown in FIG. 14, a flat plate-shaped overhanging element 88 having a substantially rectangular contour, a square bar-shaped beam portion 90 extending over the entire length in the longitudinal direction of the overhanging element 88, and the overhanging element 88. It is also possible to employ an anchor member 94 integrally provided with a mounting portion 92 formed substantially at the center in the longitudinal direction. The mounting element 92 of the anchor member 94 has a bulge element 8
Two sets of hooking elements 84 and 86 projecting to both sides of the fastener 8 are formed, and the hooking elements 84 and 86 are similar to the anchor member 76 described above, and the hooking elements 84 and 86 form a pair of posts 4 of the fastener 78.
It is hung on 4. When the anchor member 94 is properly attached to the base rear surface 14 of the fastener 78, the projecting elements 88 are arranged so as to project to both sides in the width direction of the base 16 in the regions near both ends in the longitudinal direction thereof.

[0037]

EXAMPLES In order to clarify the effect of improving the attachment strength of the fastener according to the present invention, a peeling test was performed on the fastener 10 shown in FIG. Specifically, the total length of the base 16 is 250 mm,
Has a total width of 8.5 mm, and a distance D between both ends of the pair of overhanging elements 48.
A fastener 10 having a length of 30 mm (FIG. 3) was prepared and integrally attached to a molding body 58 (seat portion of a vehicle seat) shown in FIG. 5 through an insert molding process (FIG. 6). In that state, at one end in the longitudinal direction of the base portion 16 of the fastener 10, the molding main body 5
A pulling force in a direction perpendicular to the bottom surface of the recess 64 of No. 8 was applied, and the force when the embedded portion 20 of the fastener 16 was separated from the molding body 58 was measured as the attachment strength. The measured attachment strength was about 40N.

On the other hand, as a comparative example, a similar peeling test was carried out on a conventional fastener having an oval-shaped anchor that does not protrude from the base. This conventional fastener had the same configuration as the above-described fastener 10 to be tested, except that the overhanging element 48 was not provided. The mounting strength measured with this conventional fastener is about 2
It was 0N.

[0039]

As is apparent from the above description, according to the present invention, in the fastener integrally attached to the object through the embedded portion provided on the back surface of the strip-shaped base, the fastener itself may have its own structure. It is possible to improve the attachment strength of the embedded portion to the object as much as possible without impairing the flexibility.

[Brief description of drawings]

FIG. 1 is an enlarged perspective view showing a part of a fastener according to a first embodiment of the present invention.

FIG. 2 is a plan view showing a part of the fastener of FIG.

FIG. 3 is a bottom view showing a part of the fastener of FIG.

FIG. 4 is a schematic perspective view showing a guide for installing the fastener of FIG. 1 together with the fastener.

5 is a perspective view showing an example of an article equipped with the fastener of FIG. 1. FIG.

6 is a cross-sectional view of a fastener mounting portion in the article of FIG. 5, showing a state when the fastener is not in operation.

FIG. 7 is a cross-sectional view of a fastener mounting portion in the article of FIG. 5, showing a state when the fastener is operating.

8A and 8B are views showing a preferred example of the overhanging element in the fastener of FIG. 1, and are a plan view and a side view, respectively.

9A and 9B are views showing a modified example of the overhanging element in the fastener of FIG. 1, and FIG. 9A is a plan view and FIG. 9B is a side view.

10A and 10B are diagrams showing another modified example of the overhanging element of the fastener shown in FIG. 1, FIG. 10A being a plan view and FIG. 10B being a side view.

FIG. 11 is a view showing still another modified example of the overhanging element of the fastener of FIG. 1, and is a plan view (a) and a side view (b).

FIG. 12 is a partially cutaway plan view showing, in an enlarged manner, a part of the fastener according to the second embodiment of the present invention.

13 is a view of an anchor member having a projecting element in the fastener of FIG. 12, (a) a plan view, and (b) a front view.

14A and 14B are views of a modified example of an anchor member having a projecting element in the fastener of FIG. 12, and FIG. 14A is a plan view and FIG. 14B is a front view.

[Explanation of symbols]

10, 78 ... Fastener 12 ... Main surface 14 ... Back 16 ... Base 18 ... Engagement part 20 ... Embedded part 34 ... Engaging element 44 ... Post 46 ... Anchor 48, 68, 70, 72, 74, 88 ... Overhanging element 50 ... Guide 56 ... Groove 58 ... Molding body 60 ... Goods 62 ... Covering material 76, 94 ... Anchor member

Claims (5)

[Claims] 1. A strip-shaped base having a main surface and a back surface opposite to the main surface, an engaging portion provided on the main surface of the base, and an embedded portion provided on the back surface of the base. Be equipped with
A fastener adapted to be integrally attached to an object via the embedding portion, wherein the embedding portions are discretely arranged at intervals in the longitudinal direction of the base portion, and each of the embedding portions of the base portion. A fastener comprising a plurality of overhanging elements that overhang from the base in a substantially width direction. 2. The fastener according to claim 1, wherein each of said overhanging elements is integrally formed with said base. 3. The fastener according to claim 1, wherein each of the overhanging elements is removably mounted on the base. 4. The plurality of projecting elements are arranged at equal intervals in the longitudinal direction of the base, and the projecting elements project symmetrically on both sides of the base. Fastener described in. 5. The fastener according to any one of claims 1 to 4, wherein each of the overhanging elements has a substantially flat outer surface extending parallel to the back surface on a side of the base remote from the back surface.