The present invention refers to a light lining material for a seat
of a motor-vehicle i.e. a lining realised without using the foam that is generally
used for this purpose in the automotive industry. More in particular the invention
refers to the lining material for the horizontal part of the seat as well as for
the back of it.
Present techniques utilised in building car-seats generally take into
account the need to provide seats -both in their horizontal part and their back
- which are state of the art as far as thermal comfort is concerned. This implies
that an important amount of air is interchanged between the surface of the seat
where the person is seated and the surrounding atmosphere, so that sweating is reduced
as far as possible.
Linings for car seats are already known from German patent n° DE 29901225
presenting a double layer of fabric and a coil consisting of a tube, located between
the two layers. The coil is adapted to bring cold or warm air to the seat and its
back, according to what the user wishes, the user having at its disposal a control
device to vary the temperature of the air.
However, a lining of the type described above is not only quite expensive
and difficult to produce but implies the implementation of an additional device
intended to regulate the temperature of the air.
It is an object of the present invention to provide a lining for seats
in motor-vehicles which overcomes the aforementioned drawbacks.
Said object is achieved by means of the present invention providing
a lining presenting the characteristics set forth in claim 1.
Additional characteristics and advantages will become clear from the
following description referring to the appended drawings which are provided as non-restrictive
example, and in which:
- figure 1 is a schematic perspective view of a seat of a motor-vehicle, and
- figure 2 is a section view of the layers of the material forming the horizontal
part of the seat in figure 1.
With reference to the figures, reference number 1 indicates a seat
of a motor-vehicle of the type defined as "light", that is made without the foam
generally used in the automotive industry. It presents a support-mat indicated by
reference number 3 in figure 2, fixed to the frame (not shown) of the seat 1. Above
the support-mat, the lining of the seat consists of two layers which are superimposed
and coupled in a known way, for example by means of sticking. The first and lower
layer consists of an plastic sheet incorporating a high number of air bubbles, of
basically equal size and diameter, located at the same level, the one next to the
other. This type of material for plastic sheet is very commonly used in packaging
since it damps the effect of impacts and is produced by the firm BAYER.
The second 6 of the two layers consists of a double-layer fabric forming
a sort of "supporting net" which lets the air pass through its meshes. This material
which is used specifically for the seats of motor-vehicles, is the object of patent
n° DE 19903070 by Müller Textil GmbH, Siegburg, Germany.
Tests have proven that superimposition of two layers of these different
materials, that is the one with the bubbles by Bayer and the supporting net by Müller,
provides excellent ventilation of the lining so that passengers feel more comfortable,
especially in summer. The air can circulate inside the supporting net and pass through
the spaces left between the bubbles, since the bubbles do not close these spaces
even when they are compressed
The lining is therefore functional as far as ventilation is concerned
and is also light, economical, and easy to produce at industrial level since no
operation but assembly of the two known and common materials is required.