Adjustable lumbar seating system
First Claim
Patent Images
1. A system for adjusting the contour of the lumbar region of a seat comprising:
- a. a seat having a back portion including a lumbar region contour surface for the support of the back of a user;
b. a primary air cell mounted within said back portion in engaging support with said lumbar region contour surface;
c. a plurality of secondary air cells mounted within said back portion in operative engagement with said primary air cell to provide adjustable movement thereof;
d. a control module connected to allow a selective flow of fluid to and from said primary air cell and said plurality of secondary air cells;
e. a source of pressurized fluid connected to each of said primary air cell and said plurality of secondary air cells through said control module;
f. a bleed port connected to each of said primary air cell and said plurality of secondary air cells;
g. a first switch system operatively connected to said control module to selectively initiate the flow of fluid into said primary air cell;
h. a second switch system operatively connected to said control module to selectively initiate the flow of fluid into at least one of said secondary air cells and simultaneously out of at least one other of said secondary air cells to adjust the shape of said contour surface; and
i. said primary air cell being located between said lumbar region contour surface and said plurality of secondary air cells;
said secondary air cells including two air cells located against said primary air cell and said second switch system controlling flow of fluid to and from said two air cells to cause said primary air cell to tilt with respect to said contour surface.
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Abstract
A pneumatically controlled seat for a vehicle has a multiple air cell inflation system which can adjust the pressure in each of the cells simultaneously or sequentially to individually inflate or deflate the cells to a desired pressure level to control the tilt angle of a lumbar support.
106 Citations
6 Claims
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1. A system for adjusting the contour of the lumbar region of a seat comprising:
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a. a seat having a back portion including a lumbar region contour surface for the support of the back of a user; b. a primary air cell mounted within said back portion in engaging support with said lumbar region contour surface; c. a plurality of secondary air cells mounted within said back portion in operative engagement with said primary air cell to provide adjustable movement thereof; d. a control module connected to allow a selective flow of fluid to and from said primary air cell and said plurality of secondary air cells; e. a source of pressurized fluid connected to each of said primary air cell and said plurality of secondary air cells through said control module; f. a bleed port connected to each of said primary air cell and said plurality of secondary air cells; g. a first switch system operatively connected to said control module to selectively initiate the flow of fluid into said primary air cell; h. a second switch system operatively connected to said control module to selectively initiate the flow of fluid into at least one of said secondary air cells and simultaneously out of at least one other of said secondary air cells to adjust the shape of said contour surface; and i. said primary air cell being located between said lumbar region contour surface and said plurality of secondary air cells;
said secondary air cells including two air cells located against said primary air cell and said second switch system controlling flow of fluid to and from said two air cells to cause said primary air cell to tilt with respect to said contour surface. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification