JP5382423B2 - Seat side cover - Google Patents

Description

  The present invention relates to a seat side cover that covers a side portion of a cushion frame of a seat for a transport device such as an automobile or an aircraft.

  As shown in Patent Documents 1 and 2, a side cover called a “shield” is provided on the side of the cushion frame of the automobile seat. This is provided to decorate the side portions of the cushion frame by hiding the slide adjusters, the upper and lower adjusters, the reclining mechanism of the seat back, and the like mounted on the side portions and the lower portion of the cushion frame so that they cannot be seen from the outside.

JP-A-9-263164 JP 2004-142580 A

  Although not explicitly indicated in each of the above patent documents, these side covers are made of a hard synthetic resin having a thickness of 2 mm to 3 mm formed into a predetermined shape by injection molding or blow molding. For this reason, the total weight is usually 300 g or more. By the way, in recent years, demands for weight reduction and cost reduction of various parts equipped in transportation equipment such as automobiles are increasing due to energy saving and response to environmental problems. It is desired to reduce the weight and cost of the seat side cover as much as possible.

  The present invention has been made in view of the above, and an object of the present invention is to provide a seat side cover that can be manufactured at a lower weight and at a lower cost than conventional ones.

  In order to solve the above-mentioned problems, the present invention provides a sheet side cover for covering a side portion of a cushion frame, the thin plate-shaped core material processed into a predetermined shape capable of covering the side portion, and the thin plate-shaped core. An outer surface covering portion covering the outer surface of the material, an upper edge covering portion covering the upper edge portion of the thin plate core material, a front side edge covering portion covering the front edge portion of the thin plate core material, and the thin plate core A rear side edge covering portion covering the rear side edge portion of the material, a lower edge covering portion covering the lower edge portion of the thin plate core material, and only a part of the thin plate core material is joined to the thin plate core material, and at least A cloth material having a surplus portion protruding inward at the boundary between the outer surface covering portion and the upper edge covering portion, and an engaging portion fixed to the surplus portion and engaging with a predetermined position of the cushion frame. An engagement member provided, at least an upper edge covering portion of the cloth material, a front side edge portion and a rear side edge portion. A long elastic band that is arranged so as to cover at least a part of the upper edge covering portion, and is laminated in such a manner that only a part is joined to each of the upper edge covering portion, the front side edge portion, and the rear side edge portion. A side cover for a seat is provided.

  It is preferable that only the lower edge portion of the thin plate-like core material is bonded to the lower edge covering portion of the cloth material. It is preferable that only the inner edge of the elastic band-shaped member is joined to each of the upper edge covering portion, the front side edge portion, and the rear side edge portion of the cloth material.

The thin plate core material, weight 1000 g / ^{m 2} or less, 10 mm or less thick, it is preferable that the plate-like body into a predetermined shape of the flat area 0.03m ² ~0.3m ^2. The plate-like body constituting the thin plate-like core material can be formed from synthetic resin, wood or paper. The plate-like body constituting the thin plate-shaped core material is made of synthetic resin, and a plate-like body of 2 to 8 mm thick bead foam or 0.5 to 1.5 mm thick polypropylene resin was punched out by press working. It is preferable. It is preferable that the plate-like body constituting the thin plate-shaped core material has a laminated structure of a bead foam having a thickness of 2 to 8 mm and an elastic coating material. The bead foam and the elastic covering material are preferably laminated by welding.

  It is preferable that the elastic band-shaped member is formed by punching a plate-shaped body made of polypropylene resin having a thickness of 0.5 to 1.5 mm into a band shape. Moreover, the said engaging member can be set as the structure provided only corresponding to the substantially linear range among the upper edge part of the said thin-plate-shaped core material, a front side edge part, and a rear side edge part. . Further, the engaging member is provided in a substantially curved range in addition to a substantially linear range among the upper edge portion, the front side edge portion, and the rear side edge portion of the thin plate-shaped core member. Of these, the engagement portion of the engagement member including the substantially curved shape range is formed in a substantially arc shape having a throttle portion in the vicinity of the engagement opening in the cross-sectional shape, and the cushion is engaged with the engagement portion. It can be set as the structure currently formed in the shape where the clearance gap of this aperture | diaphragm | squeeze part is larger than the thickness of the to-be-engaged part of a flame | frame.

  The cloth material includes a first cloth material that forms the outer surface covering portion and a lower edge covering portion, and a belt-like second cloth material that forms the upper edge covering portion, the front edge covering portion, and the rear edge covering portion. The first cloth material and the second cloth material are integrated by sewing with a seam allowance protruding inward, and the seam allowance protruding inward constitutes the surplus part, and the engagement part Is preferably fixed to the surplus portion by sewing. It is preferable that the lower edge part of the said thin-plate-shaped core material is joined by sewing with the lower edge coating | coated part of the said 1st cloth material. It is preferable that the inner edge of the elastic band-shaped member is joined to the inner edge of the first cloth material by sewing. Further, the seat side cover of the present invention preferably has a total weight of 200 g or less.

  The present invention provides a thin plate-like core material processed into a predetermined shape, a cloth material that covers this thin plate-like core material, and is joined to only a part of the thin plate-like core material, preferably only near the lower edge portion. Only a part of the engaging member attached to the surplus portion and the upper edge covering portion of the cloth material, and preferably an elastic belt-like member arranged with only the inner edge joined thereto are configured. That is, instead of using a hard synthetic resin having a predetermined thickness as in the prior art, it is basically a combination of a thin plate-like core material and a cloth material, so that it is lightweight. The thin plate-like core material does not need to be formed by injection molding or blow molding, and can be formed by stamping by pressing, so that the manufacturing cost is low. From the viewpoint of recyclability of recycled materials, it is possible to reduce the weight by using a plate-like body made of synthetic resin, wood or paper with a predetermined weight, a predetermined thickness or less as a thin plate-like core material. Is also excellent. In particular, the thin plate-like core material can be made very light by using a bead foam or a polypropylene resin plate-like material having a predetermined thickness or less. The thin plate-like core material and the cloth material are joined only partially, and the cloth material and the elastic belt-like member are joined only partially, so that the elasticity of the thin plate-like core material and the elasticity of the elastic belt-like member are obtained. When the engaging member is engaged with the cushion frame, meandering and wrinkles generated on the surface of the thin plate-like core material and the cloth material can be eliminated by the elasticity of these members. Further, by joining the thin plate-like core material and the cloth material, joining the cloth material and the elastic band-like member, etc. by sewing, the weight can be reduced as compared with the case of using an adhesive. By adopting all such configurations, it is possible to reduce the weight of the entire seat side cover to 200 g or less, that is, 2/3 or less of the conventional one. In addition, the part that appears on the outer surface is a cloth material, and the synthetic resin material is not exposed to the outer surface as it was in the past, so it gives a high-class feel and easily adapts to the seat skin and interior design changes. it can.

FIG. 1 is a view showing a seat side cover according to an embodiment of the present invention, wherein (a) is a front view, (b) is a rear view, (c) is a plan view, and (d) is a bottom view. (E) is a right side view, (f) is a left side view, (g) is a cross-sectional view taken along line AA in (a), and (h) is a partially enlarged view of (g). FIG. 2A is an exploded perspective view seen from the outer surface side of the seat side cover according to the embodiment, and FIG. 2B is a perspective view seen from the inner surface side in the assembled state. FIG. 2C is a perspective view showing an engagement member having a predetermined length capable of forming a bent portion, and FIG. 2D is a sectional view of the engagement portion of the engagement member in FIG. FIG. FIG. 3 is a view for explaining a method of attaching the seat side cover according to the embodiment to the side frame of the cushion frame. 4A is a front view of the side frame, and FIG. 4B is a cross-sectional view taken along the line AA in FIG. 4A in a state in which the seat side cover according to the embodiment is attached. FIG. 4C is a partially enlarged view of FIG. Fig.5 (a) is a figure for demonstrating the manufacturing method of the other example of the thin-plate-like core material which comprises the side cover for sheets, FIG.5 (b) followed the AA line of (a). It is sectional drawing.

  Next, an embodiment of the present invention will be described. 1 and 2 are views showing a seat side cover 1 according to an embodiment of the present invention. The sheet side cover 1 includes a thin plate-like core material 10, a cloth material 20, an engagement member 30, and an elastic band member 40.

  In the cushion frame 100 to which the seat side cover 1 is attached, as shown in FIGS. 3 and 4A, the side frame 110 disposed on the side is supported by the slide adjuster 120, and the length in the front-rear direction. Is about 45 to 55 cm in the longest part, and the part from the part slightly rearward than the center position in the front-rear direction to the front side edge 113 is about 10 to 15 cm in height and slightly lower toward the rear. Thus, the boundary between the upper edge portion 111 and the front side edge portion 113 has an arc shape, and the front side edge portion 113 is formed so as to be inclined rearward as it goes downward. The upper edge 111 rises upward from a portion slightly rearward of the central position in the front-rear direction to form an arcuate part 111a corresponding to the shape of the reclining adjuster 130, and the arcuate part 111a of the arcuate part 111a is formed from the lower edge part 112. The height to the top is about 20-25 cm.

  The thin plate-like core material 10 is made of a synthetic resin plate-like body, and as shown in FIG. 2, its planar shape is processed into a shape along the shape of the side frame 110 of the cushion frame 100 described above. That is, the length of the longest part in the front-rear direction is about 45 to 55 cm, the height from the lower edge 12 to the upper edge 11 is about 10 to 15 cm, and the upper edge 11 protrudes upward toward the rear. The top of the arcuate part 11a has a height from the lower edge part 12 of about 20 to 25 cm. The front side edge portion 13 has an arc shape at the boundary with the upper edge portion 11 and is formed so as to incline toward the rear as it goes downward, and the rear side edge portion 14 is an arc shape portion of the upper edge portion 11. It is formed so as to be inclined slightly forward as it goes downward from 11a.

  Since the thin plate-shaped core material 10 is simply a plate-like body, it is only necessary to punch the material of the plate-like body made of a synthetic resin having a predetermined size into the above-described planar shape by pressing, Compared with the conventional injection molding and blow molding, it can be processed very easily, and the initial cost and running cost of the equipment can be reduced, so that the manufacturing cost is low.

Since the present invention aims to reduce the weight of the seat side cover 1, a lightweight material is used for the synthetic resin plate-like body constituting the thin plate-like core member 10. Specifically, a material having a weight of 1000 g / m ² or less and a thickness of 10 mm or less is used. Further, the thin plate-like core material 10 is processed into a predetermined shape with a predetermined dimension as described above, but the sheet side cover 1 for various transportation equipment such as an automobile seat has a flat area of 0.03 m ^2. It is formed in a range of ˜0.3 m ² . Therefore, the sheet side cover 1 of the present invention has a weight of 200 g when the total weight of the thin plate-like core material 10 combined with the cloth material 20, the engaging member 30, and the elastic band-like member 40 is formed in the range of such a flat area. Hereinafter, it is preferably formed to be 150 g or less.

In order to make the total weight within the range of the above flat area, the thin plate-like core material 10 is a bead foam of 2 to 8 mm thick or a plate of polypropylene resin of 0.5 to 1.5 mm thick. It is preferable to use it. More preferably, a bead foam having a thickness of 3 to 6 mm or a polypropylene resin plate having a thickness of 0.8 to 1.0 mm is used. When a bead foam is used, the thickness is 2 to 8 mm, the weight is 60 to 240 g / m ² , the thickness is 3 to 6 mm, and the weight is 90 to 180 g / m ^2. The thickness is 0.5 to 1.5 mm and the weight is 350 to 1000 g / m ^{2. The} thickness is 0.8 to 1.2 mm and the weight is 580 to 900 g / m ² . Therefore, in order to reduce the weight, it is more preferable to use a bead foam.

  As the bead foam, a foam molded body by a resin bead method including at least one of polystyrene, polypropylene, and polyethylene is used. The expansion ratio is arbitrary and is not limited.

  In addition, as a thin plate-like core material, a plate-like body made of wood or paper can be used in addition to the above-described synthetic resin as long as it can have a predetermined weight and a predetermined thickness or less. When wood or paper is used, it is excellent from the viewpoint of reusability of recycled materials, but is formed from the above bead foam or polypropylene resin in that it is lightweight and has a predetermined elasticity. It is more preferable.

  The cloth material 20 is formed of a first cloth material 21 and a second cloth material 22, as shown in FIG. 1 (h) and FIG. The first cloth material 21 has an outer surface covering portion 21 a that covers the outer surface of the thin plate-like core member 10 and a lower edge covering portion 21 b that covers the lower edge portion 12 of the thin plate-like core member 10. Therefore, the outer surface covering portion 21 a is formed in a shape that approximates the planar shape of the thin plate-like core material 10. The second cloth material 22 is formed in a band shape, and includes an upper edge covering portion 22a that covers the upper edge portion 11 of the thin plate-like core material 10, a front side edge covering portion 22b that covers the front side edge portion 13, and a rear side edge portion. 14, a rear side edge covering portion 22 c that covers 14 is provided.

  The first cloth material 21 and the second cloth material 22 are bent inwardly at their boundary portions (parts along the outer surface covering portion 21a) to project a seam allowance 23 of about 3 to 10 mm. Joined by sewing the edges. This seam allowance 23 becomes a surplus portion for fixing an engaging member 30 described later.

  The first fabric material 21 and the second fabric material 22 may be any of woven fabric, knitted fabric, nonwoven fabric, three-dimensional knitted fabric, leather, and the like. Moreover, what laminated | stacked polyurethane foam etc. by the adhesive agent or the frame lamination process on the textile fabric, the knitted fabric, the nonwoven fabric, the three-dimensional knitted fabric, leather etc. may be used. However, in the case of a cloth material in which polyurethane foam is laminated, since the weight increases when an adhesive is used, lamination is preferably performed by frame lamination. Which fabric material is used can be arbitrarily selected according to other skin materials used for other parts of the sheet (such as the cushion surface and the back surface).

  Only the vicinity of the lower edge portion 12 of the thin plate-like core material 10 is joined to the lower edge covering portion 21b of the first cloth material 21 by sewing. The portion excluding the vicinity of the lower edge portion 12 of the thin plate-like core material 10 is not joined to either the first cloth material 21 or the second cloth material 22. The reason why only the vicinity of the lower edge portion 12 is joined is to effectively function the elasticity of the thin plate-like core material 10 itself and to suppress meandering and wrinkling of the cloth material 20. The structure is not limited to the vicinity of the edge portion 12 but may be a structure in which the thin plate-like core material 10 and the cloth material 20 are partially joined, that is, only a part thereof is joined. However, since it is desirable in terms of appearance to make the elasticity of the upper edge portion 11 side function more effectively so as not to cause meandering and wrinkles on the upper edge portion 11 side, It is preferable that only the vicinity of the edge portion 12 be joined. When the thin plate-like core material 10 is a bead foam, a lightweight reinforcing plate is attached to at least one of the outer surface or the inner surface near the lower edge portion 12 by means such as adhesion or vibration welding in order to prevent cracks due to sewing. It is preferable to keep it. As the lightweight reinforcing plate, for example, a plate-like body of polypropylene resin having a thickness of 0.5 to 1.5 mm, preferably 0.8 to 1.2 mm can be used.

  As shown in FIGS. 1G, 1H, 2A, and 2B, the engaging member 30 includes an engaging portion 31 that is bent in a substantially U shape at one edge in the width direction. The base end edge 32 is fixed to the seam allowance 23 which is a surplus part by sewing. Since the seam allowance 23 is provided along the outer surface covering portion 21a as described above, the seam allowance 23 is formed along the shape of the thin plate-like core member 10, but in this embodiment, the engagement member 30 is As shown in FIG. 2 (a), an arc-shaped portion near the boundary between the upper edge portion 11 and the front edge portion 13 and the upper side of the rear edge portion 14 is raised upward to cover the reclining adjuster. The portion corresponding to the vicinity of the top of the arc-shaped portion 11a and the bent portion such as the vicinity of the boundary 11b between the arc-shaped portion 11a and the upper edge portion 11 are not attached to the engagement member 30 and are substantially omitted from the seam allowance 23. It is attached only to the linear range. Therefore, as shown in FIGS. 2A and 2B, the engaging member 30 is formed of a plurality of linear piece members having a predetermined length. As shown in FIG. 1 (h), when the engaging member 30 is composed of a straight piece, the vicinity of the engaging port 31a of the engaging portion 31 has a substantially straight cross-sectional shape. What is formed in the clearance gap substantially the same as the thickness of the edge part (for example, upper edge part) of the side frame 110 which is an engaging part is used.

  On the other hand, as shown in FIG. 2 (c), the engaging member 30 includes a straight portion near the rear of the upper edge portion 11 of the thin plate-like core member 10, and a straight portion in front of the top portion of the arc-shaped portion 11a. It is also possible to use an extrusion-molded product having a predetermined length corresponding to the boundary 11b between the two (see FIG. 2A). Since the engagement member 30 having a predetermined length is linear before sewing, it can be easily attached to the sewing allowance 23 by sewing. On the other hand, when the thin plate-shaped core member 10 is loaded in a range surrounded by the seam allowance 23, the engagement member 30 having a predetermined length is formed in a straight line portion and an arc shape on the rear side of the upper edge portion 11 of the thin plate-shaped core member 10. The curved portion which is restricted to the curved portion 11b near the boundary with the portion 11a is bent, but since the thin plate-like core member 10 has elasticity, the degree of bending is moderate at this stage. However, when engaged with the upper edge portion 111 of the side frame 110 as the engaged portion, the bent portion 311 is formed with a curvature along the shape of the upper edge portion 111. As described above, when the engaging member 30 has a length that allows the bent portion 311 to be formed, as shown in FIG. 2D, the engaging portion 31 is placed near the engaging port 31a. It is preferable to form it in the substantially arc shape provided with the aperture | diaphragm | squeeze part 31b.

  Further, it is preferable that the gap L1 of the throttle portion 31b is larger than the plate thickness t1 of the engaged portion. More preferably, the gap L1 is set to 1.2 to 2 times the plate thickness t1, and the inner diameter L2 of the engaging portion 31 is set to 2 to 3 times. In the case of the engaging member 30 having such a length that the bent portion 311 is formed, engagement with the curved portion of the side frame 110 is facilitated by having such play. On the other hand, since the engaging member 30 is extruded and formed in a linear shape, a force to restore the linear shape in the mounted state works, and the inner surface of the throttle portion 31b is formed on the upper edge portion 111 of the side frame 110. It is pressed against the outer surface and becomes a three-point support due to the difference in the inner and outer diameters of the bent portion 311, the cross-sectional shape of the engaging portion 31 is changed, and the anti-separation function acts by the frictional force and elastic force, and the friction Occurrence of abnormal noise is also prevented by the damping effect of force and elastic force. The closer the cross-sectional shape of the engaging part 31 is to a perfect circle, the more the spring constant when the throttle part 31b engages with the engaged part becomes linear, and the disengagement prevention function and the abnormal noise prevention function are improved. Therefore, the engaging portion 31 is preferably formed so that the cross-sectional shape is a substantially perfect circle. The frictional force and elasticity of the engaging portion 31 are adjusted by the cross-sectional shape, the curvature of the restricting portion 31b, the gap L1 of the restricting portion 31b, the length from the restricting portion 31b to the edge of the engaging port 31a, and the like. be able to.

  Whether the engaging member 30 is composed of only a straight piece member or a shape having a length including the bent portion 311 is arbitrary. The size of the thin plate-shaped core member 10 and the curvature of the curved portion are arbitrary. The engagement member 30 is preferably provided partially without being provided in the entire range of the seam allowance 23. When the engaging member 30 is provided in the entire range of the seam allowance 23, the entire circumference of the thin plate-like core member 10 is restrained, and the resilience (movement) due to the elasticity of the thin plate-like core member 10 itself is restricted. That is, since both the thin plate-like core material 10 and the cloth material 20 are flexible materials, for example, the upper edge portion 111, the front side edge portion 113, the rear side edge portion 114, and the arc shape between them are formed. If the engaging member 30 is used to engage all parts including the part, meandering and wrinkling will remain in the thin plate-like core material 10 and the cloth material 20. On the other hand, when the engagement member 30 is partially attached to the seam allowance 23 as in the present embodiment, the engagement member 30 is attached when engaged with the side frame 110. Since the elastic restoring force of the portion of the thin plate-like core member 10 located in the portion where there is no force acts, this elastic restoring force works as a force that does not cause meandering and wrinkling on the thin plate-like core member 10 and the cloth material 20.

  The elastic band member 40 is disposed on the inner surface side of the second cloth material 22 and is substantially the same width as the width of the upper edge covering portion 22a, the front side edge portion 22b, and the rear side edge portion 22c constituting the second cloth material 22. It has a slightly smaller width. In addition, the elastic band member 40 exceeds the range of the upper edge covering portion 22a of the second cloth material 22, and at least a part of the front side edge portion 22b and the rear side edge portion 22c near the upper edge covering portion 22a. It is formed so as to have such a length, preferably about the same as or slightly shorter than the length of the second cloth material 22. Thereby, when arrange | positioning on the inner surface side of the 2nd cloth material 22, the elastic strip | belt-shaped member 40 urges | biases the front side edge part 22b and the back side edge part 22c of the 2nd cloth material 22 in the direction which expands outward.

  The elastic belt-like member 40 has elasticity to urge the second cloth material 22 outward as described above, but the elasticity can be easily bent along the shape of the second cloth material 22. In addition, lightweight materials are used. As such a material, a plate-like body made of polypropylene resin having a thickness of 0.5 to 1.5 mm, preferably 0.8 to 1.2 mm, can be used.

  The elastic belt-like member 40 is laminated by sewing only the inner edges 40a, 221 to each of the upper edge covering part 22a, the front side edge part 22b, and the rear side edge part 22c of the second fabric material 22 (FIG. 1 (h), see FIG. 4 (c)). The inner edges 40a, 221 are side edges located on the opposite side of the seam allowance 23, which is the boundary between the first cloth material 21 and the second cloth material 22, that is, as shown in FIGS. 4 (c) and 4 (d). Furthermore, it is a side edge located on the inner side when it is attached to the side frame 110 of the cushion frame 100 and inserted into the gap between the cushion material 140 and the side frame 110. Thus, by joining only the inner edges 40a and 221, the outer edge (side edge near the seam allowance 23) 40b of the elastic band member 40 becomes a free end edge that is not constrained, and the elasticity is easy to function. The elasticity acts as a force for eliminating meandering and wrinkling of the thin plate-like core material 10 and the cloth material 20 caused by engaging the engaging member 30 with the side frame 110 together with the elasticity of the thin plate-like core material 10 described above. If the elastic band-shaped member 40 and the second cloth material 22 are configured such that only a part thereof is bonded, the elasticity of the elastic band-shaped member 40 can be effectively functioned. Thus, the inner edges 40a and 221 are preferably used. By joining the inner edges 40a and 221, it is particularly useful for eliminating meandering and wrinkling in the vicinity of the upper edge 11 of the thin plate-like core material 10 having a great influence on the appearance.

  As shown in FIGS. 3 and 4, the seat side cover 1 of the present embodiment includes straight lines of the upper edge portion 111, the front side edge portion 113, and the rear side edge portion 114 of the side frame 110 of the cushion frame 100. The engaging portion 31 of the engaging member 30 is engaged with and attached to the shaped portion. At this time, as described above, the laminated portion of the second cloth material 22 and the elastic band member 40 is inserted into the gap between the cushion material 140 and the side frame 110. Since the second cloth material 22 and the elastic band member 40 are joined only to the inner edges 40a, 221, the inner edge 40a, 221 side is urged upward by the restoring force of the outer edge 40b of the elastic band member 40, It contacts the bottom surface of the cushion material 140 and closes the gap between the side frame 110 and the cushion material 140. Further, as described above, since the elasticity of the elastic band-shaped member 40 and the elasticity of the thin plate-like core material 10 act, the thin plate-like core material 10 does not meander and the upper edge covering portion 22a of the second cloth material 22 is used. The front side edge 22b and the rear side edge 22c are mounted without causing wrinkles.

Example 1
The thin plate-like core material 10 has the same shape as that shown in FIGS. 1 and 2, the length of the lower edge portion 420 is 420 mm, the length from the lower edge portion 12 to the top of the arc-shaped portion 11 a is 210 mm, the lower edge Of the height from the portion 12 to the upper edge portion 11, a flat bead foam having a foaming ratio of 60 times and having a height of 110 mm at the lowest position, 145 mm at the highest position, a thickness of 5 mm, and a flat area of 68823 mm ² was used. A strip-shaped plate made of polypropylene resin having a length of 420 mm, a width of 15 mm, and a thickness of 1 mm was attached to the outer surface near the lower edge portion 12 by vibration welding. The weight was 10 g in a state in which the strip-shaped plate made of polypropylene resin was stuck to the thin plate-shaped core material 10 made of bead foam.

  A knitted fabric having a thickness of 1 mm was used as the first fabric material 21 and the second fabric material 22 to coat the outer surface of the thin plate core material 10. The seam allowance 23 to be the surplus portion is 10 mm in width, and the second cloth material 22 has an upper edge covering portion 22a and a front side edge covering portion 22b of 25 mm, and a rear side edge covering portion 22c of 40 mm. As the elastic band-shaped member 40 disposed inside the second cloth material 22, a band-shaped plate-shaped body made of polypropylene resin having a width of 1 to 2 mm narrower and corresponding to the position of the second cloth material 22 is used. It was.

  The sheet-like core material 10, the first cloth material 21, the second cloth material 22, and the elastic band-like member 40 were joined by sewing at the positions described above to obtain the seat side cover 1 of this example. The total weight of the obtained seat side cover 1 is 87 g, which is about 1/3 of that of a conventional product in which a seat side cover of the same size is formed by injection molding with a hard synthetic resin having a thickness of 2 mm. It was heavy.

(Example 2)
As a thin plate-like core material 10, a plate-like body made of polypropylene resin having the same shape and the same area as that of the bead foam used in Example 1 and a thickness of 1 mm was manufactured, and the weight was 50 g. When the seat side cover 1 was manufactured using the same material, size, and shape as those of the first embodiment, the total weight was 127 g, which was about ½ or less of the conventional product. .

  Further, when the seat side cover 1 of Example 1 and Example 2 is attached to the side frame 110 of the cushion frame 100 as shown in FIGS. 3 and 4, meandering and wrinkles are not generated at the periphery. However, since the outer appearance is a cloth material while being lighter than the conventional product, the high-grade appearance is the impression that Example 1 and Example 2 are superior to the conventional product.

  In the above-described embodiment, a bead foam is used as it is as the thin plate-like core member 10, and in order to prevent cracks during sewing, a strip-like plate made of polypropylene resin is provided only at the sewing position (only in the vicinity of the lower edge portion 12). Although it sticks, it can also be set as the structure which stuck the elastic coating | covering material to at least one part of bead foam. As an elastic covering material, for example, a nonwoven fabric (for example, manufactured by KB Selen Co., Ltd.) in which thermoplastic elastomer elastic fibers having an elongation of 200% or more and a recovery rate at 100% elongation of 80% or more are melt-bonded to each other. The trade name “Espancione”) can be used. It is also possible to use a polyester-based nonwoven fabric that is less elastic than this nonwoven fabric. A non-woven fabric using thermoplastic elastomer elastic fibers having high elasticity can be attached to one surface, and a polyester-based non-woven fabric having relatively low elasticity can be attached to the other surface. Such an elastic coating material can be adhered to the bead foam by adhesion, but since the weight of the adhesive is increased, it is preferably adhered by welding, particularly by vibration welding.

  In addition, when pasting by vibration welding, when the thickness of the elastic coating material is thin and vibration welding cannot be performed as it is, as shown in FIGS. 5A and 5B, for example, both surfaces of the bead foam 101 are elastically coated. After the materials 102 and 103 are positioned, the band-shaped non-woven fabrics 104 and 105 having a predetermined thickness capable of vibration welding can be positioned at a portion where vibration welding is performed, and vibration welding can be performed.

(Example 3)
When the thin plate-like core material 10 was manufactured by sticking the product name “Espancione” manufactured by KB Seiren Co., Ltd. to the front and back surfaces of the bead foam used in Example 1, using an adhesive, Was 45 g. When the seat side cover 1 was manufactured using the same material, size, and shape as those of the first embodiment, the total weight was 122 g, which was about 1/2 or less of the conventional product. .

DESCRIPTION OF SYMBOLS 1 Side cover for sheet | seat 10 Thin plate-shaped core material 20 Cloth material 21 1st cloth material 22 2nd cloth material 30 Engagement member 31 Engagement part 40 Elastic belt-like member 100 Cushion frame 110 Side frame 140 Cushion material

Claims (15)

A side cover for the seat covering the side of the cushion frame,
A thin plate core material processed into a predetermined shape capable of covering the side part;
An outer surface covering portion that covers the outer surface of the thin plate core material, an upper edge covering portion that covers an upper edge portion of the thin plate core material, a front side edge covering portion that covers a front edge portion of the thin plate core material, It has a rear side edge covering portion that covers the rear side edge portion of the thin plate core material, and a lower edge covering portion that covers the lower edge portion of the thin plate core material, and only a part of the thin plate core material is joined to the thin plate core material. And, at least at the boundary between the outer surface covering portion and the upper edge covering portion, a cloth material having a surplus portion protruding inward,
An engagement member that is fixed to the surplus portion and includes an engagement portion that engages with a predetermined position of the cushion frame;
It is arranged so as to cover at least the upper edge covering portion of the cloth material and at least a part of the front side edge portion and the rear side edge portion near the upper edge covering portion, the upper edge covering portion, the front side edge portion, and A side cover for a seat, comprising: a long elastic band-like member that is laminated and arranged with only a part of each of the rear side edges.   The sheet side cover according to claim 1, wherein only the lower edge portion of the thin plate-like core material is joined to the lower edge covering portion of the cloth material.   2. The seat side cover according to claim 1, wherein only the inner edge of each of the elastic band-shaped members is joined to each of an upper edge covering portion, a front side edge portion, and a rear side edge portion of the cloth material. The thin plate core material, weight 1000 g / ^{m 2} or less, 10 mm or less thick, according to claim 1, wherein a is a plate-like body into a predetermined shape of the flat area 0.03m ² ~0.3m ² sheets Side cover for.   The side cover for sheets according to claim 4, wherein the plate-like body constituting the thin plate-like core material is formed of synthetic resin, wood or paper.   The plate-like body constituting the thin plate-shaped core material is made of synthetic resin, and a plate-like body of 2 to 8 mm thick bead foam or 0.5 to 1.5 mm thick polypropylene resin was punched out by press working. The seat side cover according to claim 4 or 5, wherein the side cover is a seat.   The side cover for a sheet according to claim 4 or 5, wherein the plate-like body constituting the thin-plate core material has a laminated structure of a bead foam having a thickness of 2 to 8 mm and an elastic covering material.   The side cover for a sheet according to claim 7, wherein the bead foam and the elastic covering material are laminated by welding.   2. The side cover for a seat according to claim 1, wherein the elastic band-shaped member is obtained by punching a plate-shaped body made of polypropylene resin having a thickness of 0.5 to 1.5 mm into a band shape.   2. The seat side according to claim 1, wherein the engagement member is provided corresponding to only a substantially linear range among an upper edge portion, a front side edge portion, and a rear side edge portion of the thin plate core material. cover. The engaging member is provided in a substantially curved shape range in addition to the substantially linear shape range among the upper edge portion, the front side edge portion and the rear side edge portion of the thin plate core material,
Of these, the engagement portion of the engagement member including the range of the substantially curved shape is formed in a substantially arc shape having a throttle portion in the vicinity of the engagement port in the cross-sectional shape, and the cushion frame is engaged with the engagement portion. The seat side cover according to claim 1, wherein the narrowed portion has a gap larger than a thickness of the engaged portion.   The cloth material includes a first cloth material that forms the outer surface covering portion and a lower edge covering portion, and a belt-like second cloth material that forms the upper edge covering portion, the front edge covering portion, and the rear edge covering portion. The first cloth material and the second cloth material are integrated by sewing with a seam allowance protruding inward, and the seam allowance protruding inward constitutes the surplus part, and the engagement part The seat side cover according to claim 1, wherein the side wall portion is fixed to the surplus portion by sewing.   The side cover for a seat according to claim 12, wherein a lower edge portion of the thin plate-like core member is joined to a lower edge covering portion of the first cloth material by sewing.   The side cover for a seat according to claim 12, wherein an inner edge of the elastic band-shaped member is joined to an inner edge of the first cloth material by sewing.   The seat side cover according to any one of claims 1 to 14, wherein the total weight is 200 g or less.

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