Chairs and seats – Bottom or back – Cushioned
Patent
1995-06-09
1997-12-30
Nelson, Jr., Milton
Chairs and seats
Bottom or back
Cushioned
2972182, 29745226, 297DIG1, 297DIG2, A47C 702
Patent
active
057021597
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a cushion body for an automobile seat and, in particular, relates to a cushion body of an automobile seat to which a surface material is attached through a fastener member fixed conformably on a three-dimensional curved surface of a cushioning material forming the cushion body.
BACKGROUND OF THE ART
Several methods for fixing a surface material on a surface of a cushioning material which is made of a foamed body and is a main part of an automobile seat have been known and used in public. In the prior art, in order to fix a surface material on a cushioning material having a concave surface shape about the center thereof, a back side surface of the surface material was bonded on a surface of the cushioning material, or a surface material was fixed on a cushioning material by pouring urethane in a mold after setting the surface material therein. However, in such methods for fixing or bonding a surface material on a cushioning material, their own production systems are required, and it is difficult to install such systems in a continuous assembly line. Thus, the cost for installing the system is increased. Also, because automobile seats are made by mass production, it is required to maintain high productivity because a lower volume results in a rise in cost.
In order to avoid such disadvantages, a flat fastening material is used for attaching a surface material on a cushioning material. This flat fastening material is called a flat fastener or flat fastener material. The fastener is made of tufting many hooked or ring-shaped small protrusions on a base sheet of the fastener. The hooked or ring-shaped small protrusions can hook and mechanically attach to a fabric which forms the back side of the surface material. It is found that since the surface material can be easily separated away from the fastener, while the surface material cannot be moved in a direction parallel to the fastener, such a fastener material as means for attaching a surface material on a cushion body is relatively superior.
Since this flat fastener material is basically a two-dimensional planar shape, if a seating part of a seat has a relatively flat planar shape, such a flat fastener material can be adhered to a flat surface of the seating part, and a surface material can be attached to the seat through the flat fastener material by pressurizing the flat fastener material thereon. However, if a seating part of a seat has a three-dimensional curved shape, it is difficult to conformably adhere such a flat fastener material to a three-dimensional curved surface of a cushioning material.
Therefore, an object of the present invention is to provide a cushion body of an automobile seat in which a flat fastener material is fixed conformably to a seating part of the seat having a three-dimensional curved surface shape.
DISCLOSURE OF THE INVENTION
For this, the present invention provides a cushion body consisting of a cushioning material having a three-dimensional curved surface and a fastener body consisting of a supporting material layer and a fastener material bonded thereon, wherein the fastener body is fixed on the cushioning material by positioning the flat fastener body in a mold for shaping the cushioning material along a three-dimensional curved shape of the mold and then pouring a liquefied foamable composition in the mold to form and shape the cushioning material in the mold. The fastener body is basically the same material as the cushioning material.
To fix the fastener material on the supporting material layer, an adhesive may be used. Alternatively, it may be done by setting the fastener material in a mold and pouring and molding a foamable composition forming the supporting material layer or slab in the mold so that the fastener becomes integral with the supporting material. When the cushioning material is made of urethane, it is preferable to use a urethane material (a slab) as the supporting material layer and to fix the fastener material on the slab by lamination. The thickness
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Kinoshita Yukihiro
Matsuoka Chikara
Wakimoto Kunihisa
Watadani Takeshi
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