JP2000287717A - Net type fastener - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the shearing strength of a fastener composed of a first fastener member having plural projections and a second fastener member having engage parts to be engaged to these projections. SOLUTION: A first fastener member 12 of a net type fastener 10 is provided with plural projections 18 erected on a main surface 16a of a base part 16. A second fastener member 14 is provided with engage parts 20 which can be freely attachably and detachably engaged to the plural projections 18 of the first fastener member 12. The engage part 20 of the second fastener member 14 has a net-shaped structure for holding the plural projections 18 by being arranged in counter to the main surface 16a of the base part 16 of the first fastener member 12. The net-shaped structure of the engage part 20 is formed from plural longitudinal members 22 and lateral members 24 mutually almost orthogonally extended in the shape of grid. Thus, plural through holes 28 are formed in the engage part 20 and at least one projection 18 of the first fastener member 12 is inserted to the respective through holes 28.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing device using two members that can be engaged with each other, and more particularly, to a first fastener member having a plurality of protrusions and an engaging member that engages with the protrusions. A second fastener member provided with a joining portion.

[0002]

2. Description of the Related Art In an article having an elastic body, such as a chair, a bed, a car seat, or the like, that is, a pad core material and a covering material that covers the surface of the pad core material, that is, a skin material, the pad core material has a skin material. It is known to use a fixing means such as a clip or a hook-and-loop fastener in order to firmly and fixedly attach the.

For example, Japanese Utility Model Laid-Open Publication No. 6-82968 discloses a clip for fixing a skin material of an automobile seat to a seat frame. The clip includes a plate-shaped leg provided with a plurality of elastic locking pieces, and a plate-shaped mounting portion extending from one end of the leg substantially perpendicular to the leg. The legs are inserted into locking grooves formed in the seat frame. At this time, the elastic locking piece is elastically abutted against the wall of the locking groove, whereby the clip is fixed to the seat frame. The clip is attached to the skin material by winding one end edge of the skin material around the attachment portion and sewing. According to this configuration, even when a tensile force is applied to the skin material, the leg portion of the clip is relatively firmly fixed to the seat frame without coming out of the locking groove. The material can be stably applied.

Further, Japanese Utility Model Laid-Open No. 5-60398 and Japanese Utility Model Laid-Open No. 5-70397 disclose a joining structure in which both end edges of a skin material of a headrest of an automobile seat are joined to each other or to a pad core material using a hook-and-loop fastener. Disclose. In this joint structure, the male and female fastener members constituting the surface fastener are brought into surface contact with each other, and only a large number of engagement elements provided on the contact surfaces of their bases are engaged with each other, and both end edges of the skin material are joined. They can be joined together or to the pad core.

[0005]

In the above-mentioned structure for fixing the skin material by the clip, the skin material is properly applied to the pad core material.
In order to attach the clip without deteriorating its appearance, the clip must be accurately sewn to a predetermined position of the skin material in advance. If the sewing position of the clip to the skin material is incorrect, the clip may not reach the locking groove when the skin material is attached to the pad core material, or only incomplete insertion may be possible. Occurs. Or, even if the clip can be completely inserted into the locking groove, the pre-tension for maintaining a good appearance cannot be applied to the skin, and the skin may be loosened. In order to eliminate such a problem, it is not actually easy to sew the clip accurately at a predetermined position of the skin material, and if this is to be achieved, the manufacturing process of the seat becomes complicated and the manufacturing cost is reduced. There is a fear of rising.

On the other hand, in the skin material joining structure using the surface fastener, a certain amount of fixing force can be obtained only by engaging some of the engaging elements on the contact surfaces of the male and female fastener members. High mounting positioning accuracy with respect to the skin material as used is not required. However, in the case of a hook-and-loop hook-and-loop fastener having male and female fasteners, the hook and the loop easily bend even in the mutually engaged state, so that the fixing strength against external force in the peeling direction perpendicular to the contact surface (that is, the peeling strength) Strength), there is a tendency that the fixing strength (that is, the shear strength) with respect to an external force in the shear direction parallel to the contact surface is slightly inferior. However, in order to apply the skin material firmly and stably to the pad core material, a sufficient shear strength is required at the joint portion of the skin material.

Furthermore, the above-mentioned surface fastener joining structure using surface fasteners is characterized in that the contact surfaces at the bases of the fastener members are arranged in parallel with the surfaces of the pad core material and the skin material, and the engaging elements provided on the contact surfaces are provided. Since the two members are engaged with each other, the two fastener members directly increase the overall thickness of the skin material joining portion. As a result, after the skin material is attached to the pad core, there is a concern that the appearance of the seat may be impaired, especially at the skin material joint.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a first type having a plurality of protrusions.
It is an object of the present invention to provide a fastener having a fastener member and a second fastener member having an engaging portion that engages with the projections, wherein the shear strength can be easily improved. Another object of the present invention is to provide a fastener having a pair of fastener members that can be used to fixedly apply a covering material covering the outer surface to an object, without requiring the positioning accuracy of mounting the fastener member to the skin material. Another object of the present invention is to provide a fastener capable of stably applying a coating material to an object without impairing the appearance of the coating material when the object is coated.

[0009]

In order to achieve the above object, an invention according to claim 1 is characterized in that a first fastener member having a plurality of protrusions erected on a base and a first fastener member having a plurality of protrusions are provided. A second fastener member provided with an engaging portion that faces the base portion and engages with the plurality of projections, wherein the engagement portion of the second fastener member replaces the plurality of projections of the first fastener member. A reticulated fastener having a receptive reticulated structure.

According to a second aspect of the present invention, in the mesh fastener according to the first aspect, the mesh structure of the second fastener member extends in a lattice and is fixedly connected to each other at intersections. A mesh fastener having a timber and a cross member is provided. The invention according to claim 3 is the mesh fastener according to claim 1 or 2, wherein the mesh structure of the second fastener member has a plurality of through holes, and each of the through holes has at least the first fastener member. Provide a mesh fastener into which one protrusion is inserted.

According to the first aspect of the present invention, the plurality of protrusions of the first fastener member are engaged with the engaging portions 20 of the second fastener member.
When an external force in the shear direction parallel to the base is applied to each fastener member being interconnected by the mesh structure, the protrusion is caught by the mesh structure and the interconnected state is opposed to the external force. Shear strength sufficient to hold is exhibited.

According to the second aspect of the invention, the relative displacement of the first and second fastener members in the shearing direction during the interconnection is reduced as much as possible. According to the third aspect of the present invention, by setting the height of the projection to be greater than the thickness of the mesh structure, the shear strength can be easily increased.

[0013]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In the drawings, the same or similar components are denoted by common reference numerals. FIG.
1 is a perspective view showing a mesh fastener 10 according to an embodiment of the present invention before interconnection, and FIGS. 2 and 3 are a schematic plan view and a sectional front view showing the mesh fastener 10 at the time of interconnection. is there. The mesh fastener 10 includes a first fastener member 12 and a second fastener member 14 which can be detachably connected to each other.

The first fastener member 12 includes a flat base 16 extending in a strip shape, and a plurality of columnar projections 18 standing substantially vertically on a main surface 16 a of the base 16. The protrusions 18 are engagement elements that can be engaged with an engagement portion 20 of the second fastener member 14 described below. In the illustrated embodiment, the protrusions 18 are arranged in a two-row staggered pattern on the main surface 16a of the base 16. Be placed. In this case, the plurality of protrusions 18 may be regularly arranged on the main surface 16a of the base 16 at predetermined intervals,
Further, as shown in FIGS. 2 and 3, they may be arranged at irregular intervals. Alternatively, the plurality of projections 18 can be arranged in a square lattice.

The second fastener member 14 has an engaging portion 20 which is detachably engageable with the plurality of projections 18 of the first fastener member 12. Engaging part 2 of second fastener member 14
0 is the main surface 16 of the base 16 of the first fastener member 12
a, which has a net-like structure which is arranged to face the plurality of projections 18 and faces the projections 18. The mesh structure of the engaging portion 20 is formed by a plurality of vertical members 22 and horizontal members 24 extending in a lattice shape substantially orthogonal to each other. The vertical members 22 and the horizontal members 24 form the intersection 2
At 6, they are fixedly and integrally connected to each other. As a result, a plurality of through holes 28 that open through the mesh structure are formed in the engagement portion 20. Each through-hole 28 has a size capable of receiving at least one projection 18 of the first fastener member 12. In the illustrated embodiment, a flat attachment portion 30 extending in a belt shape is formed on the side of the engagement portion 20.

As shown in FIG. 3, the first fastener member 1
The height H of the second protrusion 18 is set to be equal to or greater than the thickness S of the vertical member 22 and the horizontal member 24 of the engaging portion 20 of the second fastener member 14. The diameter D of the projection 18 is set to be equal to or less than the length L of one side of the through hole 28 of the engagement portion 20. The engaging portion 2
When the zero vertical member 22 and the horizontal member 24 can be bent, the diameter D of the projection 18 can be set slightly larger than the length L of one side of the through hole 28. Further, the spacing of the protrusions 18 on the base 16 of the first fastener member 12 is set so that all the protrusions 18 can be inserted into any of the through holes 28 of the engagement portions 20 of the second fastener member 14. Is done.

The base 16 and the plurality of projections 18 of the first fastener member 12 are preferably formed integrally from the same resin material. Preferably, each projection 18 is easily deformed or bent by the engagement of the engaging portion 20 of the second fastener member 14 with the vertical member 22 and the horizontal member 24 when the two fastener members 12 and 14 described later are interconnected. It has a rigidity that does not bend. Further, the engagement portion 20 and the attachment portion 30 of the second fastener member 14 are preferably formed integrally from the same resin material or metal material. The plurality of vertical members 22 and the horizontal members 24 of the engagement portion 20 of the second fastener member 14 may be formed in a form in which the intersection portions 26 are integrated in advance by injection molding or the like, or a combination of fibrous materials is used. After intersection 2
6 may be fixed to each other. Preferably longitudinal member 2
2 and the horizontal member 24 are both fastener members 12, 1
4 are connected to each other by the protrusions 18 of the first fastener member 14.
Has such a rigidity that it cannot be easily extended by engagement with

As described above, the mesh fastener 10 is configured such that the plurality of projections 18 of the first fastener member 12 are inserted into the plurality of through holes 28 of the engagement portion 20 of the second fastener member 14 so that the first and second fasteners are formed. It has a configuration in which the two fastener members 12, 14 are connected to each other (see FIG. 2). At the time of interconnection, each protrusion 18 of the first fastener member 12 frictionally engages on at least one of the vertical member 22 and the horizontal member 24 defining each through hole 28 of the second fastener member 14 on the side surface of the cylindrical portion. By doing so, the connection state of both fastener members 12, 14 is maintained. Such an arrangement provides the interconnected fastener members 12, 14 with a major surface 16 of the base 16.
When an external force is applied in a shear direction parallel to a, a shear strength sufficient to maintain an interconnected state against the external force can be exerted. The operation and effect of the mesh fastener 10 will be described below with reference to some application examples.

As shown in FIG. 4, for example, as shown in FIG. 4, the mesh fastener 10 is preferably used for fixing a skin material 34 covering the outer surface of the pad core material 32 of the headrest to the pad core material 32 in an automobile seat. used. In the illustrated example, the first fastener member 12 and the second fastener member 14 are fixed to both end edges 34 a of the skin material 34, respectively, and the both end edges 34 a of the skin material 34 are joined to each other by the mutual connection of the two fastener members 12 and 14. Is done. Both ends 34a of the skin material 34 are folded inward, that is, toward the pad core material 32, and the first fastener member 12 and the second fastener member 14 are fixed to the folded portions by, for example, sewing or bonding. In this case, the base portion 16 of the first fastener member 12 and the mounting portion 30 adjacent to the engaging portion 20 of the second fastener member 14 are fixed to the edge 34 a of the skin material 34.

In the skin material attaching operation, the skin material 34 is put on the outer surface of the pad core material 32, and the first and second fastener members 12, 14 fixed to both end edges 34a of the skin material 34 are connected to each other. At this time, appropriate tension is applied to the skin material 34 wound around the pad core material 32, that is, the skin material 34 is fixedly attached to the pad core material 32 by a sufficient frictional force.
In a state where a tension is applied so that the skin material 34 does not loosen after the attachment, the plurality of projections 18 of the first fastener member 12 are
Is inserted into one of the through holes 28 of the engaging portion 20 of the second fastener member 14. By doing so, the first and second
When the fastener members 12 and 14 are connected to each other, the fastener members 12 and 14 receive an external force in the shear direction due to the restoring force of the pad core 32 and the skin 34. The two fastener members 12 and 14 exhibit sufficient shear strength against this external force, and each of the projections 18 of the first fastener member 12 has a side surface of a cylindrical portion thereof.
The second fastener member 14 is frictionally engaged with the through hole 28 of the second fastener member 14, in particular, the vertical member 22 under pressure. As a result, both fastener members 1
2 and 14 are maintained, and both edges 3 of the skin material 34
4a are firmly joined together.

As shown in FIG. 5, the mesh fastener 10 also includes a skin material 38 covering a pad core material 36 of a seat portion of an automobile seat, for example, and a seat frame 40 at an edge 38a thereof.
Can also be used to fix to In this case, the first fastener member 12 is fixed in advance in the groove 42 formed in the seat frame 40 by, for example, an adhesive. The second fastener member 14 is fixed to one end edge 38 a of the skin material 38 by sewing, bonding, or the like. In the skin material mounting operation, the skin material 38 is put on the outer surface of the pad core material 36, and the second fastener member 14 fixed to one end 38 a of the skin material 38 is inserted into the groove 42 of the seat frame 40, and the first Fastener member 1
Connect to 2. Also in this case, as described above, the plurality of projections 18 of the first fastener member 12 are connected to the second fastener member 1.
By inserting the skin material 38 into the through hole 28 of any one of the engaging portions 20 of FIG. As a result, both fastener members 1
An external force in the shearing direction is applied to the first and second seat members 14 to maintain the connected state.
0 is firmly joined.

In the example of FIG. 5, the first fastener member 12 is fixed in the groove 42 of the seat frame 40. However, instead of forming the groove 42 in the seat frame 40,
A plurality of protrusions similar to the protrusions 18 of the first fastener member 12 may be integrally formed on the inner wall of the groove 42. In this case, the groove 42 of the seat frame 40 can be regarded as the first fastener member 12.

As described above, according to the mesh fastener 10, the plurality of projections 18 of the first fastener member 12 are connected to the through holes 28 of the engagement portions 20 of the second fastener member 14.
The simple operation of just inserting it into both fastener members 1
2 and 14 can be interconnected, so that both fastener members 1
There is an advantage that the relative positioning of 2 and 14 is not required, and the fastener connecting operation is extremely easy. In addition, since the through hole 28 into which the projection 18 is inserted can be freely selected, objects such as the pad cores 32 and 36 can be coated while applying appropriate tension to the coatings such as the skins 34 and 38 described above. A material can be applied. Further, the first fastener member 12
Of the plurality of projections 18 of the second fastener member 14
The fastener members 12 and 14 can be detached simply by withdrawing the fastener members from the through-hole 28, thereby facilitating the replacement of the object and the covering material.

Further, even if only a part of the projections 18 of the first fastener member 12 is engaged with the engagement portion 20 of the mesh structure of the second fastener member 14, a certain degree of shear strength can be obtained. High mounting positioning accuracy with respect to the fixing target such as the pad cores 32 and 36 and the skins 34 and 38 is not required. Further, since the projection 18 of the first fastener member 12 penetrates the engagement portion 20 of the mesh structure of the second fastener member 14 at the time of the interconnection, the skin material 34 of the skin material 34 is particularly applied to the headrest of FIG. The entire thickness of the joint portion is the first fastener member 1 including the protrusion 18.
2 only affected by the overall thickness. Therefore, the skin material 34 can be adhered to the pad core material 32 with good appearance.

The mesh fastener 10 having the above configuration is
Various modifications are possible. For example, as shown in FIGS. 6A and 6B, the protrusion 18 of the first fastener member 12 is connected to a columnar leg 44 having one end connected to the base 16, and a leg 44.
And a dome-shaped head 46 connected to the other end of the mushroom. Also in this case, the height H ′ of the leg portion 44 is the length of the vertical member 2 of the engagement portion 20 of the second fastener member 14.
2 and the thickness of the cross member 24 (FIG. 3) or more. The diameter D ′ of the head 46 is set to be equal to or less than the length L (FIG. 3) of one side of the through hole 28 of the engaging portion 20. When the vertical member 22 and the horizontal member 24 of the engaging portion 20 can be bent, the diameter D ′ of the head 46 can be set slightly larger than the length L of one side of the through hole 28.

According to this configuration, when the first and second fastener members 12 and 14 are interconnected, the plurality of projections 1
The head 46 swelling at the tip of the vertical section 8
And by engaging at least one of the cross members 24,
The peel strength against an external force in a peel direction perpendicular to the main surface 16a of the base 16 can be effectively increased. In this case, even if the rigidity of the leg portion 44 of the projection 18 is such that the leg portion 44 bends relatively easily due to an external force in the shearing direction, the engagement between the head 46 and the vertical member 22 or the horizontal member 24 is possible. Thereby, the shear strength of both fastener members 12 and 14 can be secured.

As shown in FIGS. 7A and 7B,
The protrusion 18 having an arrowhead-shaped head 48 protruding at both ends of the leg 44 at the tip of the leg 44, or protruding only on one side of the leg 44 as shown in FIGS. 8 (a) and 8 (b). Arrowhead shaped head 5
The same effect can be obtained by the protrusion 18 having zero. In particular, according to the protrusion 18 of FIG.
Has sufficient rigidity to bend relatively easily by an external force in the shearing direction, the head 50 can secure the shearing strength in one direction, but intentionally degrade the shearing strength in the opposite direction. be able to. In order to add directionality to the shear strength as described above, the protrusion 18 is attached to the main surface 1 of the base 16.
It is also effective to stand obliquely with respect to 6a.

The vertical member 22 and the horizontal member 24 of the engaging portion 20 of the second fastener member 14 have not only a rectangular cross-sectional shape shown in FIG. 3 but also a circular shape shown in FIG. It can have various cross-sectional shapes. When the vertical members 22 and the horizontal members 24 are formed from a fibrous material, the vertical members 22 and the horizontal members 24 are formed by twisting a plurality of fibrous materials.
Can also be configured. In any case, in order to reduce the relative displacement of the first and second fastener members 12 and 14 in the shear direction during the interconnection as much as possible, the longitudinal members 22 are required.
It is desirable that the cross member 24 is fixedly connected to the cross member 24 at the intersection 26.

In the mesh fastener 10, when the first and second fastener members 12 and 14 are interconnected, the plurality of protrusions 18 of the first fastener member 12 are connected to the second fastener member 14.
Since it is configured to penetrate through hole 28 of engaging portion 20 of
Depending on the application, the tips of the plurality of projections 18 (for example, the head 4
6) may affect the feeling of use and the like. In order to eliminate such an influence, for example, as shown in FIG. 9, a sponge-shaped buffer member 52 is laminated at a position where all the through holes 28 of the engaging portion 20 of the second fastener member 14 are shielded. It is advantageous.

The mesh-type fastener 10 includes a base 16 and an engaging part 2 which are formed by first and second fastener members 12 and 14.
0, that is, the extension direction of the projection 18 in the first fastener member 12, and the second fastener member 14
In this case, the first and second fastener members 12 and 12 can be bent relatively easily in the direction in which the through-hole 26 penetrates. 14 can be easily installed at the fixed location. In addition, as shown in FIGS. 10A and 10B, by providing a transverse notch 54 at a desired position of a longitudinally extending edge of the base 16 of the first fastener member 12, The first fastener member 12 can be easily bent in a direction parallel to the main surface 16a of the base 16. Thereby, the mesh fastener 10 can be easily applied to a three-dimensional curved surface of the fixed object.

The mesh fastener according to the present invention can have various dimensions so as to exhibit a desired shear strength. For example, the interval between the plurality of protrusions of the first fastener member may be in the range of 3 mm to 5 mm. In addition, the arrangement of the plurality of protrusions may be about 1 to 3 rows with respect to the load direction of the external force in the shear direction to be opposed. In contrast, the second
Since the thickness of the vertical member and the horizontal member of the engaging portion of the fastener member directly affects the shear strength of the mesh fastener, the thickness of the vertical member and the horizontal member is calculated backward from the required shear strength. Can be set. In particular, the rigidity of the vertical members and the horizontal members can be adjusted according to the permissible degree of relative displacement during the interconnection of the first and second fastener members.

The mesh fastener according to the present invention can be formed from various materials. Suitable materials for the first fastener member include polyoxymethylene, polyamide (6-nylon ™, 6,6-nylon ™
And the like, and resin materials such as polypropylene. Further, the second fastener member may be formed of a metal material such as aluminum in addition to these resin materials.

[0033]

As is apparent from the above description, according to the present invention, a first fastener member having a plurality of protrusions,
In the fastener including the second fastener member including the engaging portion that engages with the protrusion, the shear strength can be easily improved. Further according to the invention,
A fastener provided with a pair of fastener members that can be used to fixedly apply a covering material covering the outer surface to an object, without requiring positioning accuracy of the fastener member with respect to a skin material, and furthermore, covering when the object is covered. The coating material can be stably applied to the object without impairing the appearance of the material.

[Brief description of the drawings]

FIG. 1 shows a mesh fastener according to an embodiment of the present invention;
It is a perspective view which shows a part of 1st and 2nd fastener member in the state which mutually detached.

FIG. 2 is a schematic plan view showing a state where first and second fastener members of the mesh fastener of FIG. 1 are interconnected.

FIG. 3 is a partially enlarged cross-sectional view showing a state where first and second fastener members of the mesh fastener of FIG. 1 are interconnected.

FIG. 4 is a cross-sectional view showing one application example of the mesh fastener according to the present invention.

FIG. 5 is an enlarged sectional view showing another application example of the mesh fastener according to the present invention.

FIGS. 6A and 6B are diagrams showing a modified example of the protrusion of the first fastener member of the mesh fastener of FIG. 1, and are a plan view and a front view, respectively.

FIGS. 7A and 7B are diagrams showing another modified example of the projection of the first fastener member of the mesh fastener of FIG. 1, and are a plan view and a front view, respectively.

FIGS. 8A and 8B are diagrams showing another modified example of the protrusion of the first fastener member of the mesh fastener of FIG. 1, wherein FIG. 8A is a plan view and FIG.

9 is a cross-sectional view showing a modification of the mesh fastener of FIG. 1 in a state where both fastener members are interconnected.

FIGS. 10A and 10B are diagrams showing still another modified example of the first fastener member of the mesh fastener of FIG. 1, in which FIG. 10A is a front view and FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Net fastener 12 ... 1st fastener member 14 ... 2nd fastener member 16 ... Base 18 ... Protrusion 20 ... Engagement part 22 ... Vertical member 24 ... Horizontal member 26 ... Intersection 28 ... Through-hole 32, 36 ... Pad Core material 34, 38 ... skin material 40 ... seat frame

 ──────────────────────────────────────────────────の Continued on the front page F term (reference) 3B100 DA01 DB05 DB08 3J001 AA01 BA03 DE07 4F213 AA11 AA23 AA29 AC03 AH08 AH10 WA05 WA41 WA54 WA60 WB01

Claims (3)

[Claims] A first fastener member having a plurality of protrusions erected on a base portion, and an engagement portion facing the base portion of the first fastener member and engaging with the plurality of protrusions. Wherein the engaging portion of the second fastener member has a mesh structure for receiving the plurality of protrusions of the first fastener member. . 2. The mesh fastener according to claim 1, wherein the mesh structure of the second fastener member includes a plurality of vertical members and horizontal members extending in a grid and fixedly connected to each other at intersections. 3. The network structure of the second fastener member has a plurality of through holes, and each of the through holes has the first structure.
The mesh fastener according to claim 1, wherein at least one of the protrusions of a fastener member is inserted.