| External covering material for motor vehicle, motor vehicle seat, and apparatus for producing the seat -> Monitor Keywords |
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External covering material for motor vehicle, motor vehicle seat, and apparatus for producing the seatExternal covering material for motor vehicle, motor vehicle seat, and apparatus for producing the seat description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20060232111, External covering material for motor vehicle, motor vehicle seat, and apparatus for producing the seat. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND [0001] The present invention relates to a skin material for a vehicle, a seat for a vehicle and a manufacturing apparatus of the seat for the vehicle, and more particularly to a skin material for a vehicle having a high-class feeling and a quality design property, a seat for a vehicle and a manufacturing apparatus of the seat for the vehicle. [0002] In general, a seat of a two-wheel vehicle such as a motorcycle or the like is manufactured by covering a cushion material with a skin material having a weather resistance and fixing an end portion thereof to a lower surface of a bottom plate. [0003] In accordance with the manufacturing method mentioned above, it is possible to easily and efficiently manufacture the seat for the vehicle. However, since there is no seam which is formed when a natural leather is used as a raw material, there is a disadvantage that the high-class feeling is lacking. Further, a seat is desirable which has a front surface finished in different pattern and luster from the other portions and is rich in design. [0004] However, when the seam is formed by actually sewing a plurality of skin materials, rain water problematically intrudes from the seam so as to dampen clothes of a passenger with the rain water and deteriorate the cushion material. [0005] Accordingly, there has been proposed a technique of employing a pressing mold to which a seam pattern and a grain pattern are transcribed, transcribing the seam pattern and the grain pattern in the pressing mold to a flat-shaped skin raw material, cutting the flat-shaped skin material to a predetermined size, thereafter forming in a three-dimensional shape and charging the cushion material, thereby forming the seat (see, for example, Japanese Unexamined Patent Publication No. 2001-46187). [0006] In accordance with the method mentioned above, it is possible to form a one-piece skin material provided with the seam pattern. However, in the prior art mentioned above, the structure is made such that the seat is formed by transcribing a connection pattern and a fine line pattern as the seam pattern portion in the skin material serving as the flat-shaped raw material, thereafter charging the cushion material in accordance with an integral expansion molding or the like to the skin material which is formed in the three-dimensional shape by applying a vacuum molding and a tension molding, and fixing the end portion of the skin material to a bottom outer portion of the bottom plate. [0007] Accordingly, when the seam pattern portion is deformed at a time of forming the skin material three-dimensionally, making it impossible to actually bond a plurality of skin materials by sewing so as to faithfully reproduce details of a three-dimensionally produced skin assembly. Therefore, disadvantageously, a flat impression is applied and an artificial-looking image appears. [0008] Further, in conventional techniques, the predetermined shape is molded in accordance with the vacuum forming by using a ceramic mold 1 in a resin formed product of the skin material or the like (see, for example, Japanese Unexamined Patent Publication No. 9-52282). [0009] The vacuum forming mold disclosed in the prior art mentioned above is constituted by a silicone rubber serving as a breathable outer mold, and a breathable core material, and the breathable core material is structured by a sintered metal or a porous ceramic. [0010] However, in the case that the ceramic is used as the vacuum forming mold, a hole diameter of a vacuum hole is about 20 .mu.m, creating a problem in that a ventilation resistance becomes large, a vacuum speed becomes slow, and a manufacturing efficiency is deteriorated. Further, when a porous resin is used as the vacuum forming mold, the hole diameter of the vacuum hole is between 50 and 100 .mu.m in this case. Accordingly, a forming mold which can more efficiently execute the vacuum forming is desired. SUMMARY [0011] An object of the present invention is to provide a skin material for a vehicle provided with an outer appearance shape which is equal to an outer appearance of the skin assembly manufactured three-dimensionally by actually sewing or bonding, in accordance with a welding process, a plurality of skin materials, in spite of using a one-piece skin material. [0012] Further, another object of the present invention is to provide a skin material for a vehicle and a seat for a vehicle which reproduce a three-dimensional outer appearance by arranging a wadding material in a back surface side of the skin material, thereby more clearly highlighting a concavo-convex shape on the surface. [0013] Further, another object of the present invention is to provide a manufacturing apparatus of a seat for a vehicle which can sufficiently heat a skin material and can efficiently manufacture a seat for a vehicle provided with an outer appearance which has a high-class feeling and is rich in design property. [0014] In accordance with an embodiment of the present invention, there is provided a skin material for a vehicle, wherein a general surface and a predetermined shape having an outer appearance which is equal to a joint portion obtained by actually bonding a plurality of skin materials are formed in a one-piece skin material in accordance with a transcription, and an outer appearance which is equal to a three-dimensional outer appearance obtained by actually bonding a plurality of skin materials is formed three-dimensionally by one skin material. [0015] As mentioned above, in accordance with the skin material for the vehicle on the basis of an embodiment of the present invention, since it is possible to three-dimensionally form the outer appearance shape equal to the outer appearance of the skin assembly which is three-dimensionally manufactured by actually sewing a plurality of skin materials, in spite of the one-piece skin, no deformation is generated in the outer appearance shape of the surface at a time of covering the cushion material. It is therefore possible to obtain an outer appearance similar to a real article. [0016] Further, since the skin material is constituted by the one-piece skin, it is possible to prevent the rain water from making an intrusion even when the skin material is used in a seat for an outdoor vehicle. Further, since the skin material is structured such as to be provided with a form material arranged in the other portions than the joint portion in a back surface of the skin material and forming a seat surface concavo-convex shape, it is possible to reproduce a three-dimensional outer appearance by simultaneously forming the seat surface concavo-convex shape so as to highlight the concavo-convex shape more clearly. [0017] The joint portion having the outer appearance equal to the outer appearance obtained by actually bonding a plurality of skin materials is constituted by any one of: a) a joint in accordance with a sewing, b) a joint in accordance with a welding process, and c) an ornamental stitch portion provided in the skin material surface. [0018] As mentioned above, in accordance with an embodiment of the present invention, since it is possible to form the outer appearance equal to the joint portion obtained by bonding a plurality of skin materials in accordance with the sewing, the welding process and the ornamental stitch portion, it is possible to prepare the seat having various designs. In this case, the ornamental stitch portion is particularly constituted by a pattern portion. [0019] Further, the joint portion may be formed in a shape protruding from the general surface so as to be formed in an outer appearance obtained by overlapping a plurality of skin materials. [0020] Further, it is preferable that the skin material is structured such that all or a part of a joint portion shape of a plurality of skin materials, an undercut shape of the joint portion, a shape of a sewing thread, an undercut shape of the sewing thread, a shape of a seam hole, a concavo-convex shape obtained by overlapping the skin materials in the joint portion, and a shape showing a biting state of the sewing thread into the skin material are transcribed. [0021] As mentioned above, since the skin material for the vehicle in accordance with various embodiments of the present invention is structured such that not only the seam pattern is transcribed, but also all or a part of the undercut shape of the joint portion in the outer appearance of the sewing portion, the sewing thread, the seam hole, the concavo-convex shape of the skin material overlapped in the joint portion and the skin material biting state of the sewing are transcribed, it is possible to faithfully reproduce the outer appearance equal to the outer appearance obtained by actually sewing. Accordingly, it is possible to obtain the skin material for the vehicle which has the high-class feeling without any artificial impression. [0022] Further, since the structure is made such that the different outer appearances are provided on the boundary of the joint portion or the ornamental stitch portion, the outer appearance in which two or more kinds of skin materials are sewn is obtained, and it is possible to obtain the skin material for the vehicle which is rich in design. Continue reading about External covering material for motor vehicle, motor vehicle seat, and apparatus for producing the seat... Full patent description for External covering material for motor vehicle, motor vehicle seat, and apparatus for producing the seat Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this External covering material for motor vehicle, motor vehicle seat, and apparatus for producing the seat patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. 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