초록 ▼

A vehicle seat backrest assembly comprises a backrest pan, a rod in front of the pan, and a resilient sponge rubber pad overlying the rod and pan. Adjustable lumbar support means between the resilient pad and pan comprises: a support frame mounted on the rod, a manually operable adjustment lever piv

A vehicle seat backrest assembly comprises a backrest pan, a rod in front of the pan, and a resilient sponge rubber pad overlying the rod and pan. Adjustable lumbar support means between the resilient pad and pan comprises: a support frame mounted on the rod, a manually operable adjustment lever pivotally connected to the support frame and extending across the frame and out through a slot in the backrest pan, a lumbar support member in the form of a generally rectangular resilient flexible forwardly convex grid having its lower edge connected to the support plate and having its upper edge connected to the lever, whereby raising or lowering of the lever causes a decrease or increase, respectively, in the convexity of the lumbar support member and the overlying pad. Interengageable bosses on the frame and the lever and biasing means maintain the lever in selected positions.

대표청구항 ▼

In a vehicle seat: a backrest assembly having a backrest pan; and adjustable lumbar support means disposed in front of said backrest pan and comprising: a manually operable adjustment lever; means for movably connecting said lever to said backrest assembly; a resilient flexible forwardly convex lumb

In a vehicle seat: a backrest assembly having a backrest pan; and adjustable lumbar support means disposed in front of said backrest pan and comprising: a manually operable adjustment lever; means for movably connecting said lever to said backrest assembly; a resilient flexible forwardly convex lumbar support member having a lower edge and an upper edge; means for connecting said lower edge of said member in one position relative to said backrest assembly; and means for connecting said upper edge of said member to said lever, whereby moving said lever causes a change in the convexity of said lumbar support member.