Floor sheet assembly

Abstract

A floor sheet assembly has an intermediate member and a pair of sheet members. The intermediate member includes at least a thin panel, on which a plurality of hollow projections is formed. The pair of sheet members sandwiches the intermediate member. The intermediate member and the pair of sheet members form a honeycomb structure.

Description

BACKGROUND OF THE INVENTION [0001] The present invention relates to a floor sheet assembly, which is attached to a floor of a vehicle or house. [0002] A floor sheet used for a room of a house is known, which employs flooring that is decorated with grain and bonded to a sheet of plywood (See patent document 1, for example). Because such a floor sheet not only is more elaborately designed than a carpet used for a vehicle but also has a characteristic of washability, it has been expected that such a floor sheet will be applied to a vehicle, a minivan, for example. Patent document 1: Japanese Published Patent Application 11-62197 [0003] However, it has not been appropriate that the floor of a vehicle should be covered with a conventional floor sheet without modification, which is developed for application to a house. This is attributed to the fact that this conventional floor sheet is adapted to be relatively thick so as to increase its sound absorption and stiffness, which leads to an...

AI Technical Summary

Benefits of technology

[0004] The present invention seeks to provide a floor sheet assembly which is able not only to restrain an increase in a gross weight of a vehicle, but also to increase sound absorption as well as stiffness of the vehicle.

[0006] The invention described above, which introduces the honeycomb structure that has a plurality of spaces defined by the intermediate member and the pair of sheet members, excels in its light weight and high stiffness. If the floor sheet assembly according to the invention is applied to a floor of a vehicle, for example, it is possible not only to restrain an increase in a gross weight of the vehicle but also to increase sound absorption and stiffness of the floor.

[0008] The invention described above, which provides a larger space within the intermediate member without increasing a height of the projections, is able to increase not only stiffness but also impulse absorption and sound absorption of the floor sheet assembly.

[0011] Because the holes are bored at least on one side of the floor sheet assembly according to the invention described above, it is possible to guide noise reaching the sheet member, which lies on the same side, into a honeycomb structure so that the noise is efficiently absorbed, even if the sheet member does not breathe.

[0013] According to the invention described above, the surface member which usually does not breathe has the holes, which are aligned with the holes bored in the sheet member. As a result, it is possible for the floor sheet assembly not only to have a honeycomb structure efficiently absorb noise generated in a cabin, but also to satisfy an owner of a vehicle by providing free selection of a favorite surface material.

Problems solved by technology

However, it has not been appropriate that the floor of a vehicle should be covered with a conventional floor sheet without modification, which is developed for application to a house.

This is attributed to the fact that this conventional floor sheet is adapted to be relatively thick so as to increase its sound absorption and stiffness, which leads to an increase in a gross weight of the vehicle.

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