Vehicle Seat

Abstract

The present invention relates to a vehicle seat ( 1 ) comprising a seat element ( 2 ) having at least one central region ( 2 a ) and at least one edge region ( 2 b, 2 c ). The central region possesses an outer air-impermeable and water-vapor-permeable seat cover ( 30 ) and a cushion element ( 7 ) under the seat cover ( 30 ). An air-guiding spacer ( 6 ) is disposed between the seat cover ( 30 ) and the cushion element ( 7 ) to guide a first air stream ( 50 ) through the spacer ( 6 ) in a direction parallel to the seat cover ( 30 ). The at least one edge region ( 2 b, 2 c ) comprises an air-permeable edge region seat cover ( 40 ), enabling a second air stream ( 60 ) to flow outwardly through the seat cover ( 40 ). In the at least one central region ( 2 a ), a large portion of the moisture accumulated there passes into the spacer ( 6 ) and is transported away by the first air stream ( 50 ).

1  . A vehicle seat ( 1 ) comprising a seat element ( 2 ) having at least one central region ( 2   a ) and at least one edge region ( 2   b ,  2   c ), the central region possessing an outer air-impermeable and water-vapor-permeable seat cover ( 30 ) and a cushion element ( 7 ) under the seat cover ( 30 ), an air-guiding spacer ( 6 ) being disposed between the seat cover ( 30 ) and the cushion element ( 7 ) to guide a first air stream ( 50 ) through the spacer ( 6 ) in a direction parallel to the seat cover ( 30 ), and the at least one edge region ( 2   b ,  2   c ) comprising an air-permeable edge region seat cover ( 40 ), enabling a second air stream ( 60 ) to flow outwardly through the seat cover ( 40 ) of the edge region.  
   
   
       2 . The vehicle seat ( 1 ) according to  claim 1  wherein the seat cover ( 30 ) of the central region comprises an outer water-vapor-permeable seat cover layer ( 40 ) and an air-impermeable water-vapor-permeable layer ( 5 ) disposed between the spacer ( 6 ) and the seat cover layer ( 4 ).  
   
   
       3 . The vehicle seat ( 1 ) according to  claim 2  wherein the air-impermeable water-vapor-permeable layer ( 5 ) is a textile.  
   
   
       4 . The vehicle seat ( 1 ) according to  claim 2  wherein the air-impermeable water-vapor-permeable layer ( 5 ) is a membrane.  
   
   
       5 . The vehicle seat ( 1 ) according to  claim 4  wherein the membrane is a microporous or monolithic membrane.  
   
   
       6 . The vehicle seat ( 1 ) according to  claim 2  wherein the water-vapor-permeable air-impermeable layer ( 5 ) is provided as a film on the inner surface of the seat cover layer ( 4 ) of the central region or on that side of the spacer ( 6 ) which faces the seat cover layer ( 4 ) of the central region.  
   
   
       7 . The vehicle seat ( 1 ) according to  claim 1  wherein the outer water-vapor-permeable seat cover layer ( 4 ) is a textile or leather.  
   
   
       8 . The vehicle seat ( 1 ) according to  claim 1  wherein the vehicle seat ( 1 ) comprises at least one blowing means ( 9 ) for generation and individual adjustment of the second air stream ( 60 ) flowing outwardly through the seat cover ( 40 ) of the at least one edge region.  
   
   
       9 . The vehicle seat ( 1 ) according to  claim 1  wherein the vehicle seat ( 1 ) comprises at least one blowing means ( 8 ) for generation of the first air stream ( 50 ) guided in a direction parallel to the seat cover ( 4 ) of the central region.  
   
   
       10 . The vehicle seat ( 1 ) according to  claim 8  wherein the vehicle seat ( 1 ) comprises at least one blowing means ( 8 ) for generation of the first air stream ( 50 ) guided in a direction parallel to the seat cover ( 4 ) of the central region, wherein the vehicle seat ( 1 ) comprises a conjoint blowing means for generation of the first and second air streams.  
   
   
       11 . The vehicle seat ( 1 ) according to  claim 10  wherein there is provided a valve ( 24 ) for individual adjustment of the second air stream ( 60 ) flowing outwardly through the seat cover ( 40 ) of the edge region.  
   
   
       12 . The vehicle seat ( 1 ) according to  claim 1  wherein the spacer ( 6 ) is constructed and disposed such that, in the spacer ( 6 ), a predominant portion of the first air stream ( 50 ) is guided directly past the seat cover ( 4 ) of the central region or along the air-impermeable water-vapor-permeable layer ( 5 ) disposed between the spacer ( 6 ) and the seat cover ( 4 ) of the central region.  
   
   
       13 . The vehicle seat ( 1 ) according to  claim 1  wherein the spacer ( 6 ) is constructed such that the first air stream ( 50 ) has a velocity between 10 and 100 cm/s, in a direction parallel to the seat cover ( 4 ) of the central region given a pressure drop between 10 and 50 Pa over 40 cm.  
   
   
       14 . The vehicle seat ( 1 ) according to  claim 1  wherein the thickness of the spacer ( 6 ) is between 2 and 20 mm.  
   
   
       15 . The vehicle seat ( 1 ) according to  claim 1  wherein the spacer ( 6 ) consists of two outer air-permeable layers ( 12 ) having elements ( 13 ) disposed in between which vertically connect and space the two outer layers ( 12 ).  
   
   
       16 . The vehicle seat ( 1 ) according to  claim 15  wherein at least that outer layer ( 12 ) of spacer ( 6 ) which faces the seat cover of the central region consists of mutually adjacent yarns lying in the layer plane, directly adjacent yarns being in each case locally connected to each other in the horizontal direction, so that this outer layer ( 12 ) forms a sheetlike hole pattern and so that the elements ( 13 ) disposed in between are threads which meander and are alternately connected to the one outer layer ( 12 ) and to the other outer layer ( 12 ).  
   
   
       17 . The vehicle seat ( 1 ) according to  claim 1  wherein the spacer ( 6 ) is constructed such that the first air stream ( 50 ) has a velocity between 20 and 70 cm/s in the spacer ( 6 ) in a direction parallel to the seat cover ( 4 ) of the central region given a pressure drop between 10 and 50 Pa over 40 cm.  
   
   
       18 . The vehicle seat ( 1 ) according to  claim 1  wherein the thickness of the spacer ( 6 ) is between 5 and 12 mm.  
   
   
       19 . The vehicle seat ( 1 ) according to  claim 1  wherein the thickness of the spacer ( 6 ) is about 10 mm.