JP6701844B2 - Seat pad - Google Patents

Description

  The present invention relates to a seat pad in which at least the surface side of a pad body made of synthetic resin foam is covered with a skin material, and more specifically, a skin mounting member fixed to a recess provided on the surface side of the pad body, The present invention relates to a seat pad in which the skin material is attached to the pad main body by engaging and connecting a member to be attached fixed to the skin material.

  As a seat pad constituting a seat of an automobile, a pad main body made of a synthetic resin foam and at least a surface side of which is covered with a skin material is used. In such a seat pad, for example, as shown in FIGS. 3 and 4, a groove-shaped recess 11 is formed in a part of the surface of the pad body 1 made of a synthetic resin foam, and the recess 11 has By fixing the skin attachment member 3 provided with the fixed fastener 31 made of a line fastener, and engaging and connecting the fixed fastener 41 made of the line fastener of the attached member 4 attached to the skin material 2 to this, The skin material 2 is detachably attached to the pad body 1. In this way, the skin material 2 can be reattached by removably attaching it using a line fastener or the like.

  Note that the skin material 2 is omitted in FIG. 3, and 12 in FIG. 3 is a support body that supports the pad body 1. Further, 5 in FIG. 4 is a slider for engaging or disengaging the fixed/fixed fasteners (double-wire fasteners) 31 and 41 with each other, and 312 and 412 are fixed/fixed fasteners (double-wire fasteners) 31 respectively. , 41, and the engaging and disengaging engagement teeth 312, 412 of the two-line fasteners 31, 41 by the slider 5 to attach and detach the skin material 2 to and from the pad body 1. I'm supposed to get it.

  Conventionally, in such a seat pad, as disclosed in, for example, Japanese Patent No. 5567549 (Patent Document 1), when the pad body 1 is foam-molded, the skin attachment member 3 is set in a mold and foam-molded. By doing so, a part of the skin attachment member 3 is integrated with the pad body 1, and the skin attachment member 3 is fixed to the bottom surface of the recess 11. In this case, in the skin attachment member 3, the tape portion of the fixed fastener (line fastener) 31 is sewn to the strip-shaped pad fixing portion 32 that can be impregnated with resin such as nonwoven fabric, and the pad main body 1 is formed on the pad fixing portion 32. It is fixed to the pad body 1 by impregnating and integrating a synthetic resin.

Japanese Patent No. 5567549

  However, in the pad body 1 to which the fixing fasteners (line fasteners) 31 of the skin attachment member 3 are fixed in this way, the pad fixing portion 32 is impregnated with resin and solidified, so that the periphery of the concave portion 11 becomes hard, and 11 The feeling of the surroundings may be deteriorated, and the seated person may feel uncomfortable. Therefore, if the pad fixing portion 32 made of a non-woven fabric or the like is thinned or simply reduced in order to alleviate such a deterioration in feeling, sufficient fixing strength cannot be obtained and the skin material 2 and the skin mounting member 3 are not obtained. This causes a disadvantage in strength such as peeling. In this case, in order to obtain sufficient strength with a thin non-woven fabric, the area of the pad fixing portion 32 must be increased, while in order to obtain sufficient strength with a small non-woven fabric, the thickness of the pad fixing portion 32 (impregnation thickness However, it is difficult to effectively suppress the deterioration of feeling by such a simple method.

  The present invention has been made in view of the above circumstances, and an effect that the skin material can be attached to the pad body with sufficient strength, and that the periphery of the pad material fixing portion of the pad body becomes hard and the feel is deteriorated. An object of the present invention is to provide a seat pad that can be effectively prevented.

  In order to achieve the above-mentioned object, the inventors of the present invention have made an intensive study while repeating trial and error, and a strip-shaped pad fixing portion for fixing the fixing fastener to the pad main body is easily impregnated with a synthetic resin. By having a plurality of structures having a resin impregnated layer that is integrated with the pad body and a reinforcing layer that is difficult or not impregnated, the pad body can be fixed with sufficient strength and the feel is deteriorated due to an increase in hardness. It was found that the above can be effectively suppressed.

  That is, it is natural that a good fixing strength cannot be obtained if the resin impregnating property of the pad fixing portion is low, but if the resin impregnating property is uniformly good, the foamed resin raw material is spread over the entire pad fixing portion. When impregnated uniformly, an extremely hard portion is formed on the pad body, which reduces the feel. On the other hand, the pad fixing portion has a multi-layer structure having a resin-impregnated layer that is easily impregnated with a resin and a reinforcement layer that is difficult to be impregnated, so that the resin-impregnated layer has better strength while maintaining sufficient strength. Since the synthetic resin is impregnated and integrated into the pad to obtain sufficient fixing strength, and a layer that is not impregnated with the resin or has a very small amount of impregnation is present over the entire pad fixing portion, the location where the pad fixing portion is arranged. The present invention has been completed by discovering that it is possible to effectively prevent the rubber from becoming extremely hard and effectively suppress the deterioration of the feel.

Therefore, the present invention provides the following seat pads [1] to [ 6 ].
[1] A skin attachment member fixed to a recess provided on the front surface side of a pad body made of a synthetic resin foam and an attachment member fixed to a skin material are engaged and coupled to each other, so that the skin material is removed. In the seat pad attached to the pad body,
The skin attachment member includes a strip-shaped pad fixing portion impregnated and integrated with the synthetic resin of the pad body , and a fixing fastener attached to the pad fixing portion, which is a separate component from the pad fixing portion. At the same time, the attached member comprises a fixed fastener that engages with the fixed fastener, and the pad fixing portion of the outer skin attaching member is easily impregnated with the synthetic resin to be integrated with the pad body. A seat pad comprising a plurality of layers and a reinforcing layer that is less likely to be impregnated with a resin than the resin-impregnated layer or is not impregnated with a resin.
[2] The seat pad according to [1], wherein at least the resin-impregnated layer of the pad fixing portion is formed of a non-woven fabric, a woven fabric, or a mesh fabric.
[3] The pad fixing portion has a three-layer structure in which resin-impregnated layers made of a nonwoven fabric that easily impregnates the synthetic resin are arranged on both front and back sides, and the reinforcing layer is arranged between both resin-impregnated layers. The seat pad of [2] having.
[4] The seat pad according to [2] or [3], in which both the resin-impregnated layer and the reinforcing layer of the pad fixing portion are made of non-woven fabric, and the non-woven fabric of the reinforcing layer has higher density than the non-woven fabric of the resin-impregnated layer. ..
[5] The seat pad according to any one of [1] to [4], wherein the fixed fastener and the fixed fastener are constituted by a linear fastener or a surface fastener.
[6] The fixed fastener and the fixed fastener are linear fasteners in which a large number of coupling teeth are provided on one long side edge portion of the tape portion, and the tape portion is sewn to the pad fixing portion. The seat pad of [5] in which the skin attachment member is configured.

  According to the seat pad of the present invention, the skin material can be securely fixed to the pad body by a fastener such as a line fastener or a surface fastener, and the feel of the pad is impaired due to an increase in hardness of the pad fixing portion that fixes the skin material. This can be prevented as much as possible, and a good seating feeling can be surely obtained.

It is a top view which shows an example of the skin attachment member (fixed fastener) which comprises the seat pad of this invention. It is sectional drawing which followed the II-II line of FIG. 1 which shows the same skin attachment member (fixed fastener). It is sectional drawing which shows an example of a seat pad. It is a schematic sectional drawing which expands and shows typically the engagement connection part of the skin attachment member (fixed fastener) and attached member (fixed fastener) of the same seat pad.

Modes and Embodiments for Carrying Out the Invention

Hereinafter, the present invention will be described more specifically with reference to examples.
The seat pad of the present invention, like the seat pad shown in FIGS. 3 and 4, has a skin mounting member 3 fixed to a groove-shaped recess 11 provided on the front surface side of the pad body 1 made of a synthetic resin foam. And the attached member 4 fixed to the skin material 2 are engaged and connected to each other to attach the skin material 2 to the pad body 1.

  As shown in FIG. 1, the skin attachment member 3 has a fixing fastener 31 attached to a strip-shaped pad fixing portion 32 that can be impregnated with a synthetic resin. The fixing fastener 31 is not particularly limited, but in this example, a linear fastener having a large number of engaging teeth (elements) provided on one long side edge of the tape portion 311 is used. By sewn 313 the pad 311 to the pad fixing portion 32, it is attached and fixed to the central portion of the pad fixing portion 32 along the length direction.

  As shown in FIG. 2, the pad fixing portion 32 includes a resin impregnated layer 321 that is easily impregnated with the synthetic resin forming the pad body 1, and a resin impregnated layer that is harder to impregnate the resin than the resin impregnated layer 321. It is a sheet having a multilayer structure having a reinforcing layer 322 which is not impregnated. Here, FIG. 1 shows a three-layer structure in which the reinforcing layer 322 is sandwiched between the two resin impregnating layers 321 and 321. However, at least the resin impregnating layer 321 and the reinforcing layer 322 form one layer. It is sufficient to have each of them, and it may have a two-layer structure or a structure of four or more layers. In this case, it is preferable that at least the back surface (the surface on the center side of the pad body 1) is formed of the resin impregnated layer 321, and if there are three or more layers, the front surface (the surface on the front surface side of the pad body 1) is also the resin impregnated layer. It is preferably formed of 321. By thus forming the resin-impregnated layer 321 on the back surface and/or the front surface of the pad fixing portion 32, the resin is reliably impregnated into the pad fixing portion 32, and the pad fixing portion 32 is more firmly fixed to the pad body 1. Can be

  The resin impregnated layer 321 may be any one that is easily impregnated with the synthetic resin forming the pad body 1, and examples thereof include non-woven fabric, woven fabric, and mesh fabric, and are not particularly limited. However, a non-woven fabric is particularly preferably used among them. The reinforcing layer 322 may be one that is less likely to be impregnated with resin than the resin-impregnated layer 321. For example, a higher density (higher basis weight) non-woven fabric, woven fabric, mesh fabric, or the like is exemplified. However, various plate-shaped materials, film-shaped materials, rod-shaped materials and the like which cannot be impregnated with resin may be used as long as they have good flexibility. There are no particular restrictions on the material of the fibers that make up the above-mentioned non-woven fabric, woven fabric, or mesh fabric, and for example, polyamide, polyester, polyolefin, polypropylene, polyethylene terephthalate, acrylic or the like can be used.

  Here, although not particularly limited, the resin-impregnated layer 321 and the reinforcing layer 322 can be formed by using the same kind of material such as a non-woven fabric, a woven fabric, or a mesh fabric having different densities (area weights). .. Specifically, as in Examples described later, a plurality of non-woven fabrics having different densities (basis weights) are used, and the resin impregnated layer 321 is formed of non-woven fabrics having a low density (low basis weight) to obtain a higher density (more The above-mentioned reinforcing layer 322 can be formed of a non-woven fabric having a high basis weight to form the pad fixing portion 32. For example, by laminating two or more non-woven fabrics having different densities (unit weights) and bonding them by needle punching. The pad fixing portion 32 can be configured. In this case, the boundary between the resin impregnated layer 321 and the reinforcing layer 322 does not necessarily have to be clear. When the pad fixing portion 32 is formed by laminating two or more kinds of non-woven fabrics having different densities (basis weights) in this manner, for example, the reinforcing layer 322 is made to have a high density (high basis weight) by heating or pressure bonding. You can use one.

  The skin attachment member 3 of the present invention shown in FIG. 1 is set at a predetermined position of a mold when the pad body 1 is foam-molded, and a synthetic resin of a foam molding material is applied to the pad fixing portion 32 at the time of foam molding. As impregnated, as shown in FIG. 4, the pad fixing portion 32 is fixed to the bottom of the concave portion 11 formed on the front surface side of the pad main body 1 in an integrated state. At this time, the resin-impregnated layer 321 of the pad fixing portion 32 is satisfactorily impregnated with resin to be integrated with the pad body 1, and the pad fixing portion 32 is firmly fixed to the pad body 1, while the reinforcing layer 322 is It is possible to maintain good flexibility with a small resin impregnation amount or without resin impregnation, and it is possible to prevent the periphery of the pad fixing portion 32 from becoming extremely hard.

  Then, the fixed fasteners (line fasteners) 41 of the attached members 4 attached to the skin material 2 are engaged and fixed to the fixed fasteners (line fasteners) 31 of the outer skin attachment member 3, and the skin material 2 is attached. The pad body 1 is attached in a state of covering the surface side.

  As the foamed synthetic resin forming the pad body 1, a known material for forming a seat pad can be used, and examples thereof include foamed polyurethane resin, foamed polyethylene resin, and foamed polystyrene resin. Although not limited, a foamed polyurethane resin is preferably used among them. Further, in this example, the line fasteners are used as the fixed fasteners 31 and the fixed fasteners 41, but the fasteners 31 and 41 are not limited to the line fasteners, and may be any one suitable for fixing the skin material 2. It may be a surface fastener or another fastener.

  As described above, in the seat pad of the present invention, the pad fixing portion 32 that is impregnated and integrated with the synthetic resin forming the pad body 1 is provided with the resin impregnated layer 321 that is easily impregnated with the resin and the reinforcement layer 322 that is difficult or not impregnated with the resin. By adopting a multi-layer structure having the above, the reinforcing layer 322 retains sufficient strength and the resin impregnation layer 321 satisfactorily impregnates and integrates the synthetic resin to obtain sufficient fixing strength, and does not impregnate the resin. Alternatively, since a layer having a very small amount of impregnation is present over the entire pad fixing portion 32, it is possible to effectively prevent the place where the pad fixing portion 32 is disposed from becoming extremely hard, and to improve the feeling of touch. Can be suppressed.

Next, the adhesive strength of the pad fixing portion 32 forming the above-mentioned skin attachment member 3 was measured to confirm the effect of the present invention. An example of the experiment is shown below.
[Experimental example]
A plurality of strip-shaped (length 380 mm, width 20 mm, 30 mm, or 40 mm) single-layer nonwoven fabrics and three-layer structured nonwoven fabrics were prepared. Like the pad fixing portion 32 shown in FIG. 2, the non-woven fabric having a three-layer structure is subjected to heat/compression treatment between two resin-impregnated layers 321 and 321 made of non-heat-compressed non-woven fabric. A reinforcing layer 322 made of a high density (high basis weight) non-woven fabric was sandwiched and laminated by needle punching, and the total basis weight was 140 g/m ² . The unit weight of the single-layer nonwoven fabric is 100 g/m ² . The fiber material of the three-layer structure nonwoven fabric is polyethylene terephthalate, and the fiber material of the single-layer nonwoven fabric is polypropylene.

  The nonwoven fabrics were set in respective molds, and 10 kinds of polyurethane foams shown in Table 1 (dimensions: 400 mm×400 mm×100 mm, overall density: 50 g/L, 25% hardness: 200 N) were foam-molded. The above-mentioned non-woven fabric was fixed to the surface portion of each of the obtained foams, and all the non-woven fabrics were in a state of being impregnated and integrated with the polyurethane resin on the surface of the foam.

The above nonwoven fabrics were slowly peeled off (1 mm/s or less) from the obtained polyurethane foams, and the force required at that time was evaluated as the peel strength. The results are shown in Table 1. In addition, the form of peeling described in Table 1 is as follows.
Material destruction: The state where only the polyurethane part is destroyed and the impregnated layer is not destroyed.
Phase separation: Polyurethane and sewing thread are not destroyed, but the impregnated layer is destroyed.
Peeling of sewn area: The thread used for sewing is cut.

  As shown in Table 1, it was confirmed that the nonwoven fabric 2 according to the present invention achieves a fixing strength equal to or higher than that of the conventional pad fixing portion made of a single-layer nonwoven fabric.

1 Pad body 11 Recess 12 Support body 2 Skin material 3 Skin mounting member 31 Fixed fastener (Line fastener)
311 Tape part 312 Duct (element)
313 Sewing thread 32 Pad fixing portion 321 Resin impregnated layer 322 Reinforcing layer 4 Attached member 41 Fixed fastener (Line fastener)
412 Tooth (element)
5 slider

Claims (6)

By engaging and coupling a skin attachment member fixed to a recess provided on the front surface side of a pad body made of synthetic resin foam and an attached member fixed to a skin material, the skin material is attached to the pad body. In the seat pad attached to
The skin attachment member includes a strip-shaped pad fixing portion impregnated and integrated with the synthetic resin of the pad body , and a fixing fastener attached to the pad fixing portion, which is a separate component from the pad fixing portion. At the same time, the attached member includes a fixed fastener that engages with the fixed fastener, and the pad fixing portion of the skin attaching member is easily impregnated with the synthetic resin and is integrated with the pad body. A seat pad comprising a plurality of layers and a reinforcing layer that is less likely to be impregnated with a resin than the resin-impregnated layer or is not impregnated with a resin.   The seat pad according to claim 1, wherein at least the resin-impregnated layer of the pad fixing portion is formed of a non-woven fabric, a woven fabric, or a mesh fabric.   The pad fixing portion has a three-layer structure in which resin impregnated layers made of a non-woven fabric that easily impregnate the synthetic resin are arranged on both front and back sides, and the reinforcing layer is arranged between the both resin impregnated layers. Item 2. The seat pad according to item 2.   The seat pad according to claim 2 or 3, wherein both the resin-impregnated layer and the reinforcing layer of the pad fixing portion are made of a nonwoven fabric, and the nonwoven fabric of the reinforcing layer is a nonwoven fabric having a higher density than the nonwoven fabric of the resin-impregnated layer.   The seat pad according to any one of claims 1 to 4, wherein the fixed fastener and the fixed fastener are configured by a line fastener or a surface fastener. The fixed fastener and the fixed fastener are line fasteners in which a large number of engaging teeth are provided on one long side edge portion of the tape portion, and the tape portion is sewn to the pad fixing portion and the skin attachment member. The seat pad according to claim 5, wherein

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