Spring to metal rail connection

摘要

A spring assembly comprising a frame, a plurality of rails secured to the frame and a plurality of spaced springs secured to the rails. Each of the rails has a generally U-shaped cross-section and comprises a bottom and two sidewalls. Each sidewall has an inwardly projecting detent creating a receptacle underneath the detent adapted to receive and hold a spring. Each of the springs has a substantially planar lower portion which is generally S-shaped and adapted to be positioned in the receptacles of the sidewalls of the rail and rotated into a snap-fit locked position. In this locked position, the detents of the sidewalls hold the lower portion of the spring against the bottom of the rail and prevent lateral or vertical movement of the spring.