Impact damping material. helmet and panel incorporating the same

An impact damping and helmet technology, applied in the direction of helmet, helmet cover, thin material processing, etc., can solve problems such as excessively large helmets and reduced available space for panels

Inactive Publication Date: 2011-07-13
PIREN VENTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The materials used for protection often result in, for example, helmets being too large and not very user-friendly, or reducing the usable space for panels in the vehicle

Method used

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  • Impact damping material. helmet and panel incorporating the same
  • Impact damping material. helmet and panel incorporating the same
  • Impact damping material. helmet and panel incorporating the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] In a preferred embodiment, figure 1 The shown sandwich material 7 for impact damping according to the invention is used in the image 3 The helmet 8 in.

[0022] figure 1 The interlayer material 7 in includes a first layer 2 that distributes the load and has low air permeability. The interlayer material also comprises a second layer 3 having, for example, semi-closed microcellular structure particles 6 which are connected to each other and allow gas to flow in the gas channels 5 between the particles when the interlayer material is compressed . The cells are elastic to provide the compressibility of the sandwich material. The second layer may also provide viscous damping. A third layer 4 with low air permeability may further offer the possibility of directing the flow of gas from the compressed location to the volume around the compressed area in the second layer 3 . The third layer 4 faces the user's head, with possibly further layers between the third layer and ...

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Abstract

The present invention relates to a sandwich material (1 ; 7) for impact damping. The sandwich material (1 ; 7) comprises a first (2) layer having a low gas permeability and a second (3) layer being compressible and having gas flow channels (5) for internal gas flow communication. The gas flow channels (5) are provided with convolutions adapted to provide a plurality of velocity direction changes of a gas flow in said gas flow channels (5).

Description

technical field [0001] The invention relates to a sandwich material for impact damping. Furthermore, the present invention relates to helmets and panels having the sandwich material of the present invention. Background technique [0002] In common impact damping applications such as helmets, panels, etc., the energy from the impact is converted into heat by collapse or deformation of the foam. There are two main types of foam: foam that is hard and crushable, and rubbery material that is resilient. Impact characteristics depend on the characteristics of the foam and the thickness of the foam. A porous closed cell foam is available from Brock USA. The foam comprises beads of polypropylene or polyethylene. The beads fuse together by just touching their tangent points to obtain a porous foam. [0003] In US 6 098 209 a protective liner for sporting goods is disclosed in which elastic beads are housed in the outer shell of a breathable layer. When an impact or force is app...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B3/26A42B3/06B32B33/00B32B5/16
CPCB32B5/18A42B3/125Y10T428/25Y10T428/249976
Inventor E·埃尔瓦斯蒂
Owner PIREN VENTURE
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