Height adjusting device for automotive seat
First Claim
1. A height adjusting device for an automotive seat having a seat frame of the seat mounted therein so as to be adjustable in height, comprising:
- a pair of upstanding brackets erected upon said seat frame;
a forward height adjusting mechanism adapted for height adjustment of a forward part of said seat frame;
said forward height adjusting mechanism being provided with a first non-reversible brake device;
a rearward height adjusting mechanism adapted for height adjustment of a rearward part of said seat frame;
said rearward height adjusting mechanism being provided with a second non-reversible brake device;
a first sprocket wheel connected with said rearward height adjusting mechanism via said second non-reversible brake device;
a second sprocket wheel rotatably provided in vicinity of said forward height adjusting mechanism;
an endless chain extended between said first and second sprocket wheels;
a first gear provided in a coaxial relation with said second sprocket wheel for simultaneous rotation therewith;
a second gear connected with said forward height adjusting mechanism via said first non-reversible brake device; and
a switch-over gear interposed and displaceable between said first and second gears such as to permit selective engagement of said switch-over gear with one of said first and second gears.
1 Assignment
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Accused Products
Abstract
A height adjusting device for an automotive seat comprising a forward seat height adjusting mechanism adapted for height adjustment of the forward part of a seat cushion, a rearward seat height adjusting mechanism adapted for height adjustment of the rearward part of the seat cushion, a control mechanism which is operatively connected with those two height adjusting mechanism, and a pair of first and second sprocket wheels with an endless chain wound thereabout are arranged between the rearward height adjusting mechanism and control mechanism. Thus, a rattling or wobbling is avoided in the rearward height adjusting mechanism.
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Citations
6 Claims
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1. A height adjusting device for an automotive seat having a seat frame of the seat mounted therein so as to be adjustable in height, comprising:
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a pair of upstanding brackets erected upon said seat frame; a forward height adjusting mechanism adapted for height adjustment of a forward part of said seat frame;
said forward height adjusting mechanism being provided with a first non-reversible brake device;a rearward height adjusting mechanism adapted for height adjustment of a rearward part of said seat frame;
said rearward height adjusting mechanism being provided with a second non-reversible brake device;a first sprocket wheel connected with said rearward height adjusting mechanism via said second non-reversible brake device; a second sprocket wheel rotatably provided in vicinity of said forward height adjusting mechanism; an endless chain extended between said first and second sprocket wheels; a first gear provided in a coaxial relation with said second sprocket wheel for simultaneous rotation therewith; a second gear connected with said forward height adjusting mechanism via said first non-reversible brake device; and a switch-over gear interposed and displaceable between said first and second gears such as to permit selective engagement of said switch-over gear with one of said first and second gears. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification