Fastener and manufacturing method thereof

Abstract

The fastener (1) is provided with a surface fastener part (6) and a supporting base part (8) for supporting the surface fastener part (6), and the surface fastener part (6) is provided with a plurality of fastener piece parts (10) which are overlapped in the width direction (D1). Each fastener piece section (10) has: a support base section (12); and a plurality of engagement sections (4) provided on the support base section (12) and arranged in a row in the longitudinal direction (D2). The support base section (12) is joined to the support base section (8) by insert molding using synthetic resin.

Description

Technical Field

[0001] The present invention relates to a fastener and a method for manufacturing the same, and more particularly to a fastener used as a mounting mechanism for fixing an automobile interior component to a body panel of an automobile and a method for manufacturing the same. Background Art

[0002] In the past, for example, when installing automobile interior parts (such as a ceiling, an instrument panel, a console, etc.) on a body panel of an automobile, a fastener having a face fastener portion was used. For example, the fastener disclosed in Patent Document 1 has a base member made of synthetic resin and a face fastener fixed to the base member. The base member has one side provided with a filling space and the other side provided with an opening portion connected to the filling space, and a plurality of engaging portions are provided in a plane on the face fastener. When the face fastener is fixed to the base member, the face fastener is positioned on the other side of the base member in a molding die to block the opening portion of the base member, and synthetic resin is injected into the molding die and filled into the filling space and the opening portion of the base member. Thus, the face fastener is fixed to the base member using the synthetic resin filled in the filling space and the opening portion.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2020-137989 Summary of the invention

[0006] Problems to be solved by the invention

[0007] In the conventional manufacturing method of fasteners, a fastener combining a surface fastener and a base member can be easily manufactured by insert molding in which the surface fastener and the base member are used as inserts. However, the manufacturing of the surface fastener itself having a plurality of engaging portions arranged in a planar shape is not easy and the manufacturing cost is high. Therefore, there is a problem that the manufacturing cost of the above-mentioned fastener manufactured using such a surface fastener is also high.

[0008] An object of the present invention is to provide a fastener having a surface fastener portion that can be formed more easily, thereby achieving a reduction in manufacturing cost.

[0009] Another object of the present invention is to provide a method for manufacturing a fastener, which method can more easily form a surface fastener portion, thereby achieving a reduction in manufacturing costs.

[0010] Technical solutions to the problem

[0011] A fastener according to one aspect of the present invention comprises: a surface fastener portion; and a support base portion supporting the surface fastener portion; the surface fastener portion comprises a plurality of fastener pieces overlapping in a first direction, each of the plurality of fastener pieces comprising: a support base portion; and a plurality of engaging portions disposed on the support base portion and arranged in a row along a second direction perpendicular to the first direction; the support base portion is combined with the support base portion by insert molding utilizing synthetic resin.

[0012] Preferably, each of the plurality of fastener pieces is formed by resin molding.

[0013] In addition, preferably, each of the plurality of fastener pieces has a first side surface and a second side surface on both sides of the first direction, respectively; the first side surface of one of a pair of fastener pieces adjacent to each other in the first direction is provided with a mating protrusion, and the second side surface of the other fastener piece is provided with a mating recess, and the mating protrusion is mated with the mating recess.

[0014] Furthermore, preferably, the surface fastener portion includes a surface fastener intermediate body including: at least one pair of fastener pieces among the plurality of fastener pieces; and at least one connecting portion connecting the at least one pair of fastener pieces in series.

[0015] Furthermore, preferably, the surface fastener intermediate is formed by bending a fastener sheet continuum having the at least one pair of fastener sheet portions connected in series by the at least one connecting portion at the at least one connecting portion, and fitting the fitting protrusion into the fitting recess.

[0016] Alternatively, preferably, the surface fastener portion has a surface fastener intermediate, which has: at least four fastener sheet portions among the plurality of fastener sheet portions; and at least three connecting portions connecting the at least four fastener sheet portions in series to each other; the surface fastener intermediate is formed by bending a fastener sheet continuum having the at least four fastener sheet portions connected in series by the at least three connecting portions in a wrinkled manner at the at least three connecting portions, and fitting the engaging protrusion into the engaging recess.

[0017] Alternatively, preferably, the plurality of fastener pieces have the same structure, the engaging protrusion is provided on the first side surface of each of the plurality of fastener pieces, and the engaging recess is provided on the second side surface of each of the plurality of fastener pieces.

[0018] Alternatively, preferably, the plurality of fastener pieces include a plurality of first fastener pieces and a plurality of second fastener pieces, the plurality of first fastener pieces and the plurality of second fastener pieces overlap alternately along the first direction, the first side surface and the second side surface of each of the plurality of first fastener pieces are provided with an engaging recess, and the first side surface and the second side surface of each of the plurality of second fastener pieces are provided with an engaging protrusion, and the engaging protrusions are each engaged with the engaging recess of the first fastener piece adjacent to the first direction.

[0019] Preferably, the supporting base portion comprises: an upper base portion protruding from the supporting base; and a lower base portion buried in the supporting base; in the first direction, the width of the lower base portion is smaller than the width of the upper base portion, a pair of fastener pieces adjacent to each other in the first direction abut against each other at the upper base portion, a gap is provided between the lower base portions, and synthetic resin is filled in the gap.

[0020] Preferably, a communication opening is provided at the lower portion of the base of each of the plurality of fastener pieces, and the communication opening passes through the lower portion of the base in the first direction and is communicated with the gap.

[0021] Another aspect of the present invention is a method for manufacturing a fastener, wherein the fastener has a surface fastener portion and a supporting base portion that supports the surface fastener portion, wherein the method for manufacturing the fastener includes: a resin molding process, in which a plurality of fastener pieces having a supporting base portion are formed by resin molding; a surface fastener portion forming process, in which a plurality of the fastener pieces are overlapped in a first direction to form the surface fastener portion; and a supporting base forming process, in which the supporting base portion combined with the supporting base portion is resin molded by insert molding using the surface fastener portion as an insert; each of the plurality of the fastener pieces also has a plurality of snap-fit ​​portions provided on the supporting base portion, and the plurality of the snap-fit ​​portions are arranged in a row along a second direction perpendicular to the first direction.

[0022] Preferably, each of the fastener pieces has a first side surface and a second side surface on both sides in the first direction, respectively, a fitting protrusion is provided on the first side surface, and a fitting recess is provided on the second side surface.

[0023] In the hook and loop fastener portion forming step, the fastener piece portions are fitted together by fitting the fitting protrusions provided on the fastener piece portions and the fitting recesses provided on the adjacent fastener piece portions.

[0024] According to another aspect of the present invention, there is provided a method for manufacturing a fastener, wherein the fastener has a surface fastener portion and a support base portion supporting the surface fastener portion, wherein the method for manufacturing the fastener comprises: a resin molding step, in which a plurality of fastener piece continuums are formed by resin molding, wherein the fastener piece continuum is formed by a plurality of fastener piece portions having a support base portion connected in series via a connecting portion; a surface fastener portion forming step, in which a plurality of the fastener piece continuums are used to form the surface fastener portion; and a support base portion forming step, in which the support base portion combined with the support base portion is formed by insert molding using the surface fastener portion as an insert. The surface fastener portion is resin molded; the surface fastener portion forming process includes: a folding process, folding each of the plurality of fastener piece continua at the connecting portion so that the plurality of fastener piece portions overlap each other in a first direction to form a plurality of surface fastener intermediates; and an overlapping process, overlapping the plurality of surface fastener intermediates in the first direction to form the surface fastener portion; each of the plurality of fastener piece portions also has a plurality of snap-fitting portions arranged on the supporting base portion, and the plurality of snap-fitting portions are arranged in a row along a second direction perpendicular to the first direction.

[0025] Preferably, each of the plurality of fastener pieces has a first side surface and a second side surface on both sides of the first direction, a mating recess is provided on the first side surface, and a mating protrusion is provided on the second side surface. In the folding process, the mating protrusion is mated with the mating recess so that the plurality of fastener pieces are mated with each other.

[0026] Alternatively, preferably, each of the plurality of fastener piece continua has a plurality of fastener piece portions including a first fastener piece portion and a second fastener piece portion alternately arranged, the first fastener piece portion and the second fastener piece portion each having a first side surface and a second side surface on both sides of the first direction, an engaging protrusion is provided on the first side surface and the second side surface of the first fastener piece portion, and an engaging recess is provided on the first side surface and the second side surface of the second fastener piece portion, and in the folding process, the plurality of fastener piece portions are engaged with each other by engaging the engaging protrusion with the engaging recess.

[0027] Effects of the Invention

[0028] According to the fastener of one aspect of the present invention, since the surface fastener portion is composed of a plurality of fastener pieces having a plurality of engaging portions arranged in a row along the second direction, these fastener pieces can be relatively easily formed by resin molding using synthetic resin or the like. In addition, the surface fastener portion is formed by overlapping a plurality of fastener pieces in the first direction, so the surface fastener portion can also be easily formed. Furthermore, the surface fastener portion is combined with the support base by insert molding using synthetic resin, so the surface fastener portion and the support base can also be easily combined.

[0029] According to another aspect of the present invention, a method for manufacturing a fastener is provided in which a plurality of fastener pieces having a plurality of engaging portions arranged in a row along a second direction are formed by resin molding, and a plurality of the fastener pieces are overlapped with each other in a first direction to form a surface fastener portion, so that the surface fastener portion can be formed relatively easily. Moreover, the fastener is manufactured using the surface fastener portion that is relatively easily formed, so that the fastener can be manufactured relatively easily and at a low cost. Furthermore, the support base is formed by insert molding using the surface fastener portion as an insert, so that the fastener can be manufactured easily.

[0030] According to another aspect of the present invention, a method for manufacturing a fastener includes: a step of forming a plurality of fastener sheet continuums by resin molding, the fastener sheet continuum having a plurality of fastener sheet portions having a plurality of engaging portions arranged in a row; a step of folding each fastener sheet continuum so that the fastener sheet portions overlap each other to form a surface fastener intermediate; and a step of overlapping a plurality of the surface fastener intermediates to form a surface fastener portion. Therefore, the surface fastener portion can be formed relatively easily. Moreover, since the fastener is manufactured using the surface fastener portion that is relatively easy to form, the fastener can be manufactured relatively easily and at a low cost. Furthermore, the fastener can be easily manufactured by forming a support base by insert molding using the surface fastener portion as an insert. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a perspective view showing a fastener according to a first embodiment of the present invention.

[0032] Figure 2 Yes means Figure 1 A three-dimensional view of one of the fastener pieces of the fastener of Figure 2 (a) is a stereoscopic view when viewed from the rear. Figure 2 (b) is a stereoscopic image when viewed from the front.

[0033] Figure 3 (a) means Figure 1 A cross-sectional view of two of the fastener pieces of the fastener, Figure 3 (b) means Figure 3 (a) is an exploded front view of the two fastener pieces.

[0034] Figure 4 Yes means Figure 1 A three-dimensional view of a surface fastener portion of a fastener.

[0035] Figure 5 yes Figure 1 VV line cross-sectional view.

[0036] Figure 6 (a) is a cross-sectional view showing two of the fastener pieces of the fastener according to the modified form of the first embodiment, Figure 6 (b) means Figure 6 (a) is an exploded front view of the two fastener pieces shown.

[0037] Figure 7 It is a perspective view showing a fastener according to a second embodiment of the present invention.

[0038] Figure 8 yes Figure 7 A three-dimensional view of a surface fastener portion of the fastener shown.

[0039] Fig. 9 yes Figure 8 An exploded perspective view of the face fastener portion is shown.

[0040] Fig.10 It means composition Figure 8 A perspective view of a fastener sheet continuum of a surface fastener intermediate body included in the surface fastener portion shown.

[0041] Fig.11 Yes means Fig.10 The illustrated perspective view shows a fastener sheet continuous body in the process of being folded.

[0042] Fig.12 (a) is viewed from the rear Fig.10 The three-dimensional view of the surface fastener intermediate body formed by folding the fastener sheet continuum shown, Fig.12 (b) is viewed from the front Fig.12 (a) is a three-dimensional view of a face fastener intermediate. DETAILED DESCRIPTION

[0043] Hereinafter, embodiments and variations of the fastener and the method for manufacturing the same of the present invention will be described with reference to the accompanying drawings. In the following description, substantially the same components are denoted by the same reference numerals, and description thereof will be omitted.

[0044] The fasteners of the embodiments and modified forms of the present invention can be suitably used as mounting mechanisms for fixing automobile interior components (such as ceilings, dashboards, consoles, etc.) to the body panels of the automobile, but their uses are not limited to this and can be widely used to fix various general components to the device body.

[0045] First, refer to Figure 1 to Figure 5 A fastener according to a first embodiment of the present invention will be described. Figure 1 As shown, the fastener 2 of this embodiment includes a surface fastener portion 6 and a support base 8 supporting the surface fastener portion 6. The surface fastener portion 6 includes a plurality of engaging portions 4 arranged in a planar shape and a support portion 60 supporting the engaging portions 4, and the bottom of the support portion 60 is embedded in the support base 8. The engaging portions 4 are arranged at intervals in the width direction (first direction) D1 and the length direction (second direction) D2 perpendicular to the width direction D1.

[0046] More specifically, the surface fastener portion 6 has a plurality of (in Figure 1 In the example shown, there are eight fastener pieces 10. These plurality of fastener pieces 10 all have the same structure and overlap in the width direction D1.

[0047] like Figure 2 and Figure 3 As shown, each fastener piece 10 has a support base portion 12 extending along the length direction D2 and a plurality of engaging portions 4 provided on the support base portion 12. The support portion 60 is constituted by the support base portions 12 of the plurality of fastener pieces 10. The support base portion 12 has an upper surface 12a and a lower surface 12b on both sides of the up-down direction (third direction) D3 perpendicular to the width direction D1 and the length direction D2.

[0048] A plurality of engaging portions 4 are provided on the upper surface 12a of the support base portion 12, and are arranged in a row at intervals in the length direction D2. Each engaging portion 4 has a leg portion 14 extending from the upper surface 12a of the support base portion 12 in the up-down direction D3 and a head portion 16 provided at the top of the leg portion 14, and is formed into a mushroom shape as a whole. The head portion 16 is roughly hemispherical, coaxial with the leg portion 14, and has a larger diameter than the leg portion 14 when viewed from above. Thus, when viewed from above, the head portion 16 extends radially outward from the outer peripheral surface of the leg portion 14, and the engaging portion 4 (specifically, the head portion 16) functions as an engaging mechanism that engages with an engaging portion of another fastener.

[0049] The support base portion 12 includes a base lower portion 18, a base upper portion 20 located between the base lower portion 18 and the engaging portion 4, and a plurality of (three in this example) abutment protrusions 26 arranged at intervals in the length direction D2. The base lower portion 18 includes a first side surface 18a and a second side surface 18b on both sides in the width direction D1, and the base lower portion 18 is embedded in the support base 8 (see Figure 5 ). The upper base portion 20 has a first side surface 20a and a second side surface 20b on both sides of the width direction D1, and the upper base portion 20 protrudes upward from the support base 8. In the width direction D1, the width W1 of the lower base portion 18 is smaller than the width W2 of the upper base portion 20 (W1<W2), and the upper base portion 20 extends further to both sides of the width direction D1 than the lower base portion 18. The abutting protrusion 26 is rectangular and extends from the second side surface 18b of the lower base portion 18 along the width direction D1.

[0050] Here, the fastener piece 10 (more specifically, the supporting base portion 20 of the fastener piece 10) has a first side surface and a second side surface on both sides of the width direction D1, respectively. In the present embodiment, the first side surface of the fastener piece 10 includes a first side surface 18a of the base lower portion 18 and a first side surface 20a of the base upper portion, and the second side surface of the fastener piece 10 includes a second side surface 18b of the base lower portion 18, a second side surface 20b of the base upper portion 20 and a top end surface 26a of the abutting protrusion 26.

[0051] Furthermore, a plurality of (here, three) engaging protrusions 22 are provided on the first side surface of the fastener piece 10, and a plurality of (here, three) engaging recesses 24 are provided on the second side surface. The plurality of engaging protrusions 22 are arranged at intervals from each other along the length direction D2, and the plurality of engaging recesses 24 are also arranged at intervals from each other along the length direction D2.

[0052] In this embodiment, the plurality of engaging protrusions 22 are provided on the first side surface 18a of the base lower portion 18 on the first side surface of the fastener piece 10 , and the plurality of engaging recesses 24 are provided on the top end surface 26a of the abutting protrusion 26 on the second side surface of the fastener piece 10 .

[0053] Reference Figure 2 A pair of communication openings 30 and a pair of communication openings 32 are provided on the lower surface 12b of the support base portion 12 (base lower portion 18), and the pair of communication openings 32 are provided on both sides of the length direction D2 of the pair of communication openings 30. The communication openings 30 and 32 penetrate the support base portion 12 (base lower portion 18) in the width direction D1. Each communication opening 30 is longer than the communication opening 32 in the length direction D2, and shorter than the communication opening 32 in the up-down direction D3.

[0054] like Figure 4 and Figure 5 As shown in FIG. 1 , a plurality of fastener pieces 10 overlap (fit) with each other in the width direction D1 to form the surface fastener portion 6. More specifically, as shown in FIG. Figure 3 As shown, the fastener pieces 10 are mutually passed so that one side ( Figure 3 The fitting protrusion 22 of the fastener piece 10 (hereinafter, also referred to as the "left fastener piece 10L") on the left side in the width direction D1 is connected to the fitting protrusion 22 of the fastener piece 10 (hereinafter, also referred to as the "left fastener piece 10L") on the other side in the width direction D1 Figure 3 The left and right fastener pieces 10 (hereinafter also referred to as "right fastener piece 10R") are engaged (inserted) with the engaging recess 24, thereby engaging with each other. In addition, the base upper portions 20 of the left fastener piece 10L and the right fastener piece 10R abut against each other over the entire length in the longitudinal direction D2. Furthermore, the top end surface 26a of the abutting protrusion 26 of the right fastener piece 10R abuts against the first side surface 18a of the base lower portion 18 of the left fastener piece 10L. With such a structure, adjacent fastener pieces 10 are maintained in a predetermined positional relationship with each other.

[0055] In addition, a gap 28 is defined between the base lower portions 18, 18 of the left fastener piece 10L and the right fastener piece 10R at a position below the base upper portion 20. That is, the gap 28 is defined by the first side surface 18a of the left fastener piece 10L, the second side surface 18b of the right fastener piece 10R, and the lower surfaces of the base upper portions 20, 20 of the left fastener piece 10L and the right fastener piece 10R.

[0056] The gap 28 communicates with the openings 30 and 32 ( Figure 2 In other words, the communication openings 30, 32 of the left fastener piece 10L and the communication openings 30, 32 of the right fastener piece 10R communicate with each other via the gap 28 located therebetween. As described later, the gap 28 is filled with a synthetic resin.

[0057] As described later, the support base 8 is formed by insert molding with the surface fastener portion 6 as an insert. Figure 5 As shown, the base lower part 18 is embedded in the support base 8 .

[0058] Next, the manufacturing method of the fastener 2 is described. First, a synthetic resin such as ABS resin or unsaturated polyester resin is used to form a plurality of fastener pieces 10 by resin molding (resin molding process / fastener piece forming process). At this time, the plurality of fastener pieces 10 are formed independently. In addition, in order to increase the strength, a synthetic resin mixed with glass fiber or the like can also be used. Each fastener piece 10 has a structure having a plurality of engaging portions 4 arranged in a straight line in a row, and can therefore be easily formed by resin molding.

[0059] Next, a plurality of fastener pieces 10 are overlapped in the width direction D1 to form the surface fastener portion 6 (surface fastener portion forming step). That is, the fastener pieces 10 are assembled by fitting the engaging protrusion 22 of one of the fastener pieces 10 adjacent to each other in the width direction D1 into the engaging recess 24 of the other fastener piece 10. When the fastener pieces 10 are assembled in this way, the base upper portions 20 abut against each other, and a gap 28 is defined between the base lower portions 18, and the gap 28 functions as a filling space for filling synthetic resin in the next step.

[0060] Next, the support base 8 is formed by insert molding using the face fastener part 6 as an insert (support base forming step). In this support base forming step, the face fastener part 6 is positioned at a predetermined position in a molding die (not shown), and synthetic resin (molten synthetic resin) is injected into the molding die to form the support base 8 combined with the face fastener part 6, thereby completing the fastener 2. Figure 5 As shown, the synthetic resin injected into the molding die flows around the base lower portion 18 of the face fastener 6, and a portion of the synthetic resin flows into the gap 28 and fills the gap 28. As a result, the face fastener portion 6 (a plurality of fastener pieces 10 are fixed to each other) and the support base 8 embedded in the base lower portion 18 of the face fastener portion 6 is formed.

[0061] Here, the gap 28 is connected to the communication openings 30 and 32, so the flow of the synthetic resin injected into the molding die becomes smooth, and the pressure rise of the local synthetic resin can be suppressed. In addition, the number, size, shape, and arrangement position of the communication openings 30 and 32 can be appropriately set in consideration of the flow of the synthetic resin.

[0062] In addition, the base upper portions 20 of the adjacent fastener pieces 10 abut against each other over the entire area in the longitudinal direction D2 thereof, so that the base upper portions 20 function as a dam to prevent the synthetic resin injected into the molding die from leaking from the gap 28 to the engaging portion 4. If the synthetic resin leaks to the engaging portion 4, the function of the fastener 2 is reduced, but in the present embodiment, the base upper portion 20 functions as a dam to prevent such a problem from occurring.

[0063] In this way, the support base 8 is formed by the synthetic resin injected into the molding die, and the fastener pieces 10 are joined to each other (the surface fastener 6 is fixed), and then the base lower portion 18 is buried in the support base 8, so that the support base 8 and the surface fastener portion 6 are integrated, so that the fastener 2 with sufficient strength can be manufactured relatively easily. Moreover, the fastener 2 has sufficient strength, so it can be suitably used as a mounting mechanism for mounting an automobile interior component on a body panel of an automobile.

[0064] In the above-mentioned embodiment, the engaging protrusion 22 is provided on the first side surface 18a of the lower portion 18 of the base, and the engaging recess 24 is provided on the top end surface 26a of the abutting protrusion 26 provided on the lower portion 18 of the base, but in other embodiments, the engaging protrusion 22 is provided on the first side surface 20a of the upper portion 20 of the base, and the engaging recess 24 is provided on the second side surface 20b of the upper portion 20 of the base.

[0065] In the above embodiment, the fastener piece 10 has the engaging protrusion 22 on the first side and the engaging recess 24 on the second side. However, in another embodiment, the fastener piece 10 has the engaging protrusion 22 on the second side and the engaging recess 24 on the first side.

[0066] Next, refer to Figure 6 (a) and Figure 6 (b) describes a fastener of a modified form of the first embodiment. The fastener of this modified form has a plurality of fastener pieces 10', which include a plurality of first fastener pieces 10A and a plurality of second fastener pieces 10B having a shape different from that of the first fastener pieces 10A, and the first fastener pieces 10A and the second fastener pieces 10B are alternately overlapped to form a surface fastener portion.

[0067] Each first fastener piece 10A is similar to the above-mentioned fastener piece 10, but the difference is that a plurality of (here, three) engaging protrusions 22A are provided on the second side 18b of the base lower portion 18 of the first fastener piece 10A instead of the plurality of abutting protrusions 26. That is, a plurality of engaging protrusions 22 are provided on the first side 18a of the base lower portion 18 of the first fastener piece 10A, and a plurality of engaging protrusions 22A are provided on the second side 18b. The engaging protrusions 22A have the same shape as the engaging protrusions 22, but face in the opposite direction.

[0068] In addition, the second fastener piece 10B is similar to the above-mentioned fastener piece 10, but the difference is that a plurality of (here, three) abutting protrusions 26B are provided on the first side surface 18a of the base lower portion 18 of the second fastener piece 10B instead of the plurality of interlocking protrusions 22, and an interlocking recess 24B is provided on the top end surface 26a of each abutting protrusion 26B. That is, a plurality of abutting protrusions 26B having an interlocking recess 24B are provided on the first side surface 18a of the base lower portion 18 of the second fastener piece 10B, and a plurality of abutting protrusions 26 having an interlocking recess 24 are provided on the second side surface 18b.

[0069] In this modified form, the same surface fastener section as above can be assembled by fitting the fitting protrusion 22 of the first fastener piece 10A into the fitting recess 24 of the second fastener piece 10B and fitting the fitting protrusion 22A of the first fastener piece 10A into the fitting recess 24B of the second fastener piece 10B.

[0070] Furthermore, when the first and second fastener pieces 10A and 10B are fitted together as described above to assemble the surface fastener part, as shown in FIG. Figure 6 As shown in (a) of FIG. 1 , similarly to the above-described embodiment, a gap 28 serving as a filling space for filling synthetic resin is defined between the base lower portions 18 .

[0071] Furthermore, in this modified embodiment, the first side surface of the first fastener piece 10A includes the first side surface 18a of the base lower portion 18 and the second side surface 20a of the base upper portion 20, and the second side surface thereof includes the second side surface 18b of the base lower portion 18 and the second side surface 20b of the base upper portion 20. In addition, the first side surface of the second fastener piece 10B includes the first side surface 18a of the base lower portion 18, the second side surface 20a of the base upper portion 20, and the top end surface 26a of the abutting protrusion 26B, and the second side surface includes the second side surface 18b of the base lower portion 18, the second side surface 20b of the base upper portion 20, and the top end surface 26a of the abutting protrusion 26.

[0072] In addition, in the present variation, the first and second side surfaces 18a, 18b of the base lower portion 18 of the first fastener piece 10A are provided with engaging protrusions 22, 22A, respectively, and the top end surfaces 26a of the abutting protrusions 26B, 26 provided on the first and second side surfaces 18a, 18b of the base lower portion 18 of the second fastener piece 10B are provided with engaging recesses 24B, 24, respectively. However, the present invention is not limited to such a structure. In other variations, the first and second side surfaces 20a, 20b of the base upper portion 20 of the first fastener piece 10A are provided with engaging protrusions 22, 22A, respectively, and the first and second side surfaces 20a, 20b of the base upper portion 20 of the second fastener piece 10B are provided with engaging recesses 24B, 24, respectively.

[0073] Next, refer to Figure 7 to Figure 12 A fastener according to a second embodiment of the present invention will be described. Figure 7 and Figure 8 The fastener 2C of this embodiment is similar to the fastener 2 of the first embodiment, but differs in that it has a surface fastener 6C instead of the surface fastener portion 6. Fig. 9 The hook and loop fastener portion 6C includes a pair of hook and loop fastener intermediate bodies 66 that overlap in the width direction D1. Each hook and loop fastener intermediate body 66 is formed by Fig.10 The fastener sheet continuum 62 shown is as follows Fig.11 It is formed by folding into a folded shape as shown.

[0074] More specifically, if Fig.10 As shown, each fastener piece continuous body 62 has four fastener piece parts 10, and these four fastener piece parts 10 are connected in series by three connecting parts 64. That is, each connecting part 64 connects adjacent fastener piece parts 10 to each other at the ends in the longitudinal direction of the support base part 12. The connecting part 64 is a thin-walled member with flexibility. By folding the fastener piece continuous body 62 at the connecting part 64, the fastener piece parts 10 overlap each other in the same way as the fastener piece parts 10 of the first embodiment described above, thereby forming Fig.12 The surface fastener intermediate body 66 shown. In addition, in the fastener piece continuous body 62 as shown Fig.10In the state of being linearly extended as shown, the orientation of the fastener piece 10 in the width direction D1 is alternating.

[0075] Next, the manufacturing method of the fastener 2C of the present embodiment is described. The manufacturing method of the fastener 2C of the present embodiment is similar to the manufacturing method of the fastener 2 of the first embodiment described above, but in the resin molding process of the present embodiment, instead of forming a plurality of fastener pieces 10 individually, a plurality of (here, two) fastener piece continuous bodies 62 are formed, and the fastener piece continuous bodies 62 are formed by connecting a plurality of fastener pieces 10 in series by a connecting portion 64 (fastener piece continuous body forming process). By integrally forming the fastener piece continuous body 62 by resin molding in this way, a plurality of (here, four) fastener pieces 10 can be formed simultaneously.

[0076] Next, the fastener sheet continuous body 62 formed in the resin molding step (fastener sheet continuous body forming step) is used to form the surface fastener section 6C (surface fastener section forming step). Here, the surface fastener section forming step of this embodiment includes a folding step and an overlapping step. In the folding step, the fastener sheet continuous body 62 is folded into a folded shape by the connecting portion 64 so that the fastener sheet sections 10 overlap each other in the width direction D1, thereby forming two Fig.12 The surface fastener intermediate body 66 is shown. That is, in this folding process, the fastener piece continuous body 62 is bent in a valley shape relative to the prescribed direction at the first connection portion 64 from the end, is bent in a mountain shape relative to the prescribed direction at the second connection portion 64, and is bent in a valley shape relative to the prescribed direction at the third connection portion 64. Then, the fastener pieces 10 are engaged with each other by fitting (inserting) the fitting protrusions 22 of the fastener pieces 10 into the fitting recesses 24 of the adjacent fastener pieces 10, as in the first embodiment described above.

[0077] In the following overlapping process, Fig. 9 As shown in FIG. 1 , a pair of surface fastener intermediate bodies 66 are overlapped in the width direction D1 to form the surface fastener portion 6C. That is, the fitting protrusion 22 exposed to the outside of one surface fastener intermediate body 66 is fitted into the fitting recess 24 exposed to the outside of the other surface fastener intermediate body 66, thereby fitting the surface fastener intermediate bodies 66 in the width direction D1 to form Figure 8 The surface fastener portion 6C is shown.

[0078] Then, the support base 8 is formed by insert molding using the face fastener 6C as an insert (support base forming step). In this support base forming step, the face fastener 6C is positioned at a predetermined position in a molding die (not shown), and synthetic resin (molten synthetic resin) is injected into the molding die. Thus, similarly to the first embodiment, the support base 8 to which the face fastener 6C is fixed is formed by the synthetic resin injected into the molding die.

[0079] In addition, the number of fastener sheet portions 10 included in the fastener sheet continuous body 62 is not limited to four, and in other embodiments, it includes two, three, or five or more fastener sheet portions 10 connected via the connecting portion 62. In another embodiment, the surface fastener portion 6C includes three or more surface fastener intermediate bodies 66.

[0080] Next, a fastener according to a modification of the second embodiment will be described. In the second embodiment, the fastener piece continuous body 62 has a plurality of fastener piece portions 10, but the fastener piece continuous body of this modification has two pairs of fastener piece portions 10. Figure 6 (a) and Figure 6 The first and second fastener sheet portions 10A and 10B shown in (b) are used instead of the fastener sheet portion 10, and the fastener sheet continuous body is bent into a folded shape at the connecting portion 64 to form a surface fastener intermediate body.

[0081] That is, in the present variation, a component formed by alternately connecting the first fastener piece 10A and the second fastener piece 10B via a connecting portion 64 is used as a fastener piece continuum, which has, in sequence from one end side in the longitudinal direction, a first fastener piece 10A, a connecting portion 64, a second fastener piece 10B, a connecting portion 64, a first fastener piece 10A, a connecting portion 64 and a second fastener piece 10B.

[0082] The fastener of this modified embodiment is manufactured as follows: First, the two fastener sheet continuous bodies are formed by resin molding using a synthetic resin (resin molding step / fastener sheet continuous body forming step).

[0083] Next, the fastener sheet continuous body is bent at each connecting portion 64 in a folded shape to form a surface fastener intermediate body (bending step). In the surface fastener intermediate body thus formed, the first fastener sheet portion 10A and the second fastener sheet portion 10B are alternately overlapped in the width direction D1. Next, the two surface fastener intermediate bodies are assembled in the width direction D1 in the same manner as above to form a surface fastener portion (fitting step).

[0084] Then, the support base is formed by insert molding with the surface fastener part as an insert (support base forming process). That is, the surface fastener part is positioned at a predetermined position in a molding die (not shown) and synthetic resin is injected. This can also form the same fastener as above.

[0085] In addition, in this modification, each fastener piece continuous body has two pairs of first fastener piece parts 10A and second fastener piece parts 10B connected via the connecting part 64, but the present invention is not limited to such a structure. In other modifications, the fastener piece continuous body has a pair of first fastener piece parts 10A and second fastener piece parts 10B or three or more pairs of first fastener piece parts 10A and second fastener piece parts 10B. In addition, in another modification, the surface fastener part has three or more surface fastener intermediates that fit together.

[0086] As mentioned above, although the fastener and the manufacturing method thereof according to the embodiment and the modified form of the present invention are described, the present invention is not limited to these embodiments and the modified form, and various corrections and changes can be made without departing from the scope of the present invention.

[0087] Description of reference numerals:

[0088] 2.2C fastener

[0089] 4 snap-fit ​​parts

[0090] 6.6C surface fastener part

[0091] 8 Support base

[0092] 10, 10' fastener piece

[0093] 10A first fastener piece

[0094] 10B Second fastener piece

[0095] 12 Support base

[0096] 18 Lower part of base

[0097] 20 Upper part of base

[0098] 28 gaps (filling space)

[0099] 62 Fastener piece continuum

[0100] 64 connection part

[0101] 66-face fastener intermediate

Claims

1. A fastener, wherein: have: Surface fastener department; as well as A support base supporting the surface fastener portion; The surface fastener portion has a plurality of fastener pieces overlapping in a first direction, Each of the plurality of fastener pieces comprises: a supporting base portion; and a plurality of engaging portions disposed on the supporting base portion and arranged in a row along a second direction perpendicular to the first direction; The support base portion is combined with the support base portion by insert molding using a synthetic resin.

2. The fastener according to claim 1, wherein: Each of the plurality of fastener pieces has a first side surface and a second side surface on both sides of the first direction, The first side surface of one of a pair of fastener pieces adjacent to each other in the first direction is provided with a fitting protrusion, and the second side surface of the other fastener piece is provided with a fitting recess, and the fitting protrusion fits with the fitting recess.

3. The fastener according to claim 2, wherein: The surface fastener part has a surface fastener intermediate body, The hook and loop fastener intermediate body includes: at least one pair of fastener pieces among the plurality of fastener pieces; and at least one connecting portion connecting the at least one pair of fastener pieces in series.

4. The fastener according to claim 3, wherein: The hook and loop fastener intermediate is formed by bending a fastener sheet continuous body having the at least one pair of fastener sheet portions connected in series by the at least one connecting portion at the at least one connecting portion and fitting the fitting protrusion into the fitting recess.

5. The fastener according to claim 2, wherein: The surface fastener part has a surface fastener intermediate body, The surface fastener intermediate body comprises: at least four fastener pieces among the plurality of fastener pieces; and at least three connecting parts connecting the at least four fastener pieces in series with each other; The hook and loop fastener intermediate is formed by bending a fastener sheet continuum having at least four fastener sheet portions connected in series by the at least three connecting portions in a folded manner at the at least three connecting portions, and fitting the fitting protrusion into the fitting recess.

6. The fastener according to claim 2, wherein: The plurality of fastener pieces have the same structure, The first side surface of each of the plurality of fastener pieces is provided with the engaging protrusion. The fitting recess is provided on the second side surface of each of the plurality of fastener pieces.

7. The fastener according to claim 2, wherein: The plurality of fastener pieces include a plurality of first fastener pieces and a plurality of second fastener pieces, A plurality of the first fastener pieces and a plurality of the second fastener pieces overlap alternately along the first direction, The first side surface and the second side surface of each of the plurality of first fastener pieces are provided with a fitting recess. The first side surface and the second side surface of each of the plurality of second fastener pieces are provided with the engaging protrusion. The fitting protrusion fits with the fitting recess of the first fastener piece adjacent to the first direction.

8. The fastener according to claim 1, wherein: The support base portion comprises: a base upper portion protruding from the support base; and a base lower portion buried in the support base; In the first direction, the width of the lower portion of the base is smaller than the width of the upper portion of the base, A pair of fastener pieces adjacent to each other in the first direction abut against each other at the upper portion of the base, a gap is provided between the pieces at the lower portion of the base, and the gap is filled with synthetic resin.

9. The fastener according to claim 8, wherein: The base lower portion of each of the plurality of fastener pieces is provided with a communication opening, and the communication opening passes through the base lower portion in the first direction and is communicated with the gap.

10. A method for manufacturing a fastener, the fastener comprising a surface fastener portion and a support base for supporting the surface fastener portion, wherein: The manufacturing method of the fastener comprises: A resin molding step, forming a plurality of fastener pieces having a supporting base portion by resin molding; a surface fastener portion forming step of overlapping a plurality of the fastener pieces in a first direction to form a surface fastener portion; and a support base forming step of resin molding the support base combined with the support base portion by insert molding using the face fastener portion as an insert; Each of the plurality of fastener pieces further comprises a plurality of engaging portions disposed on the support base portion, The plurality of engaging portions are arranged in a row along a second direction perpendicular to the first direction.

11. The method for manufacturing a fastener according to claim 10, wherein: Each of the fastener pieces has a first side surface and a second side surface on both sides of the first direction, a fitting convex portion is provided on the first side surface, and a fitting concave portion is provided on the second side surface, In the hook and loop fastener portion forming step, the fastener piece portions are fitted together by fitting the fitting protrusions provided on the fastener piece portions and the fitting recesses provided on the adjacent fastener piece portions.

12. A method for manufacturing a fastener, the fastener comprising a surface fastener portion and a support base for supporting the surface fastener portion, wherein: The manufacturing method of the fastener comprises: A resin molding step, forming a plurality of fastener piece continuum by resin molding, wherein the fastener piece continuum is formed by connecting a plurality of fastener piece portions having a supporting base portion in series via a connecting portion; a surface fastener portion forming step of forming the surface fastener portion using a plurality of the fastener piece continuum; and a support base forming step of resin molding the support base combined with the support base portion by insert molding using the face fastener portion as an insert; The surface fastener portion forming process comprises: A folding step of folding each of the plurality of fastener piece continuums at the connection portion so that the plurality of fastener piece portions overlap each other in a first direction to form a plurality of surface fastener intermediates; and an overlapping step of overlapping a plurality of the surface fastener intermediates in the first direction to form the surface fastener portion; Each of the plurality of fastener pieces further comprises a plurality of engaging portions disposed on the support base portion, The plurality of engaging portions are arranged in a row along a second direction perpendicular to the first direction.

13. The method for manufacturing a fastener according to claim 12, wherein: Each of the plurality of fastener pieces has a first side surface and a second side surface on both sides of the first direction, A fitting recess is provided on the first side surface, and a fitting protrusion is provided on the second side surface. In the folding step, the plurality of fastener pieces are fitted together by fitting the fitting protrusions and the fitting recesses.

14. The method for manufacturing a fastener according to claim 12, wherein: Each of the plurality of fastener piece continuums has a plurality of fastener piece portions including first fastener piece portions and second fastener piece portions that are alternately arranged. The first fastener piece and the second fastener piece each have a first side surface and a second side surface on both sides of the first direction, respectively. The first side surface and the second side surface of the first fastener piece are provided with a fitting protrusion, The first side surface and the second side surface of the second fastener piece are provided with a fitting recess. In the folding step, the plurality of fastener pieces are fitted together by fitting the fitting protrusions and the fitting recesses.

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