Vehicle seat mounting structure
First Claim
1. A vehicle seat mounting structure having front and rear sides, comprisinga base frame securable to a vehicle chassis, a seat frame disposed above the base frame for carrying a seat, and a mechanism operatively interposed between said frames for controlling relative motion therebetween to produce downward tilting of the seat with vehicle movement, tending to throw the seat toward the front side of the mounting structure, said mechanism comprising:
- a sub frame including a reaction member;
upper and lower elongated link means having one set of the ends pivoted said base frame and another set of ends pivoted on said sub frame;
means connecting said seat frame and said sub frame; and
first and second cushioning means, with one of said cushioning means located between said base frame and said reaction member, and the other of said cushioning means located between said reaction member and seat frame.
0 Assignments
0 Petitions
Accused Products
Abstract
A vehicle seat mounting structure includes a base, a seat mount, and a mechanism operably interposed between the base and mount for controlling relative motion thereof. The mechanism includes a platform, air springs to cushion roadway induced shock, and linkage arms to couple the base, seat mount and platform. The mechanism produces a rearward tilting of a seat which is mounted on the structure when vehicle movement tends to throw the seat toward the front of the mounting structure.
70 Citations
18 Claims
-
1. A vehicle seat mounting structure having front and rear sides, comprising
a base frame securable to a vehicle chassis, a seat frame disposed above the base frame for carrying a seat, and a mechanism operatively interposed between said frames for controlling relative motion therebetween to produce downward tilting of the seat with vehicle movement, tending to throw the seat toward the front side of the mounting structure, said mechanism comprising: -
a sub frame including a reaction member; upper and lower elongated link means having one set of the ends pivoted said base frame and another set of ends pivoted on said sub frame; means connecting said seat frame and said sub frame; and first and second cushioning means, with one of said cushioning means located between said base frame and said reaction member, and the other of said cushioning means located between said reaction member and seat frame. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9)
-
-
7. The mechanism of claim wherein said first cushioning means has a modulus of elasticity greater than that of said second cushioning means.
-
10. A truck seat support for supporting a seat on a truck-cab floor comprising:
-
a base, including a plate and a pair of spaced apart, upwardly extending elements located on the sides of said plate, secured to the cab floor; a seat mount attached to the seat; linkage means interposed between said base and said mount including a platform having a pair of vertically spaced apart attachment points on each side thereof, and, on each side of the support, a pair of link arms, each of said pairs, at one end thereof, being pivotally secured to said elements at vertically spaced apart points, and, at the other end thereof, being pivotally secured to said platform, said link arms being constructed and arranged to allow substantially vertical movement of said seat mount relative to said base, said arms extending substantially parallel to one another to maintain a substantially parallel relationship between said plate and said platform; and cushioning means interposed between said base and said seat mount for cushioning the relative movement of said seat mount and said base, said cushioning means including a first resilient cushion, having a first modulus of elasticity, located between said base and said platform, and a second resilient cushion, having a second modulus of elasticity, located between said platform and said seat mount, wherein said first modulus of elasticity is greater than said second modulus of elasticity, said linkage means and said cushioning means being constructed and arranged to maintain said seat mount in a predetermined orientation relative to the surface over which the truck is moving. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
Specification