Load floor having sound absorption and insulation performances for vehicle

• US 10,166,737 B2
• Filed: 01/23/2017
• Issued: 01/01/2019
• Est. Priority Date: 02/05/2016
• Status: Active Grant

• Current Assignee: Daesol Ausys Co., Ltd.
• Original Assignee: Daesol Ausys Co., Ltd.
• Inventors: Kwon, Min Ho, Byung-Jong, Ma
• Primary Examiner(s): Patel, Kiran B
• Application Number:
  US15/412,242
• Publication Number:
  US 20170225425A1
• Time in Patent Office: 708 Days
• Field of Search: 296 393, 117117, 117 95, 117116, 527941
• CPC Class Codes: B32B 2250/40 Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
• CPC Class Codes: B32B 2262/101 Glass fibres
• CPC Class Codes: B32B 2307/102 Insulating
• CPC Class Codes: B32B 2307/732 Dimensional properties
• CPC Class Codes: B32B 2309/105 Thickness
• CPC Class Codes: B32B 2605/00 Vehicles
• CPC Class Codes: B32B 2607/00 Walls, panels
• CPC Class Codes: B32B 27/10 of paper or cardboard
• CPC Class Codes: B32B 27/12 next to a fibrous or filamentary layer
• CPC Class Codes: B32B 27/40 comprising polyurethanes
• CPC Class Codes: B32B 29/02 next to a fibrous or filamentary layer
• CPC Class Codes: B32B 29/08 Corrugated paper or cardboard
• CPC Class Codes: B32B 3/12 characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
• CPC Class Codes: B32B 3/266 characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
• CPC Class Codes: B32B 5/028 Net structure, e.g. spaced apart filaments bonded at the crossing points
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: B60N 3/04 of floor mats or carpets
• CPC Class Codes: B60R 13/011 for internal load compartments, e.g. car trunks
• CPC Class Codes: B60Y 2306/09 Reducing noise

Abstract

A load floor for a vehicle, by which, as the load floor is manufactured by including manufacturing a honeycomb structure with paper and adding polyurethane sheets to both side surfaces of the honeycomb structure, light and sufficient structural stiffness and a sound absorption effect are obtained through the honeycomb structure. As the polyurethane sheets are respectively provided on both surfaces of the honeycomb structure, sound absorption and insulation performances are obtained to further increase a sound absorption and insulation effect.

Claims

1. A load floor having sound absorption and insulation performances for a vehicle, comprising:

a honeycomb structure manufactured in a sheet form;

two glass mesh mats respectively installed on both side surfaces of the honeycomb structure;

polyurethane sheets formed of a hard material and respectively provided to overlap the glass mesh mats, wherein at least one of the polyurethane sheets comprises punched holes having a predetermined gap; and

two wall papers respectively provided to overlap the polyurethane sheets.

2. The load floor of claim 1, wherein the honeycomb structure is manufactured with paper.

3. The load floor of claim 1, wherein, in a plan view, the honeycomb structure is formed in a shape in which a corrugating medium is integrally formed with regular hexagonal pillars, polygonal pillars, regular polygonal pillars, or liners into which the corrugating medium is inserted.

4. The load floor of claim 1, wherein the punched holes have a diameter in a range of 2 to 4 mm.

5. The load floor of claim 1, wherein:

the load floor has a total thickness in a range of 13 to 25 mm; and

each of the polyurethane sheets has a thickness in a range of 2 to 3 mm.

6. The load floor of claim 5, wherein the load floor is used by being installed on a trunk floor panel or includes a package tray installed to be spaced a predetermined gap from the floor panel and configured to put luggage thereon.