Longitudinal adjustment device for motor vehicle seat, has ball holder provided for accommodating balls, where edge section of ball holder overlaps around projection in longitudinal direction through base section

摘要

#CMT# #/CMT# The device has seat rails (5, 8) that are alternatively gripped while forming a rail profile (9), where the rails are moved in a longitudinal direction with respect to each other. Balls (12) are arranged between the seat rails. A ball holder (14) is provided for accommodating the balls, and has a base section (14a) with a base length (L0) in a longitudinal direction and an edge section (14b). The edge section of the ball holder overlaps around a projection (Delta L) in the longitudinal direction through the base section. #CMT#USE : #/CMT# Longitudinal adjustment device for a vehicle seat i.e. motor vehicle seat (claimed). #CMT#ADVANTAGE : #/CMT# The edge section of the ball holder overlaps around the projection in the longitudinal direction through the base section, thus reducing free length of the seat rails in extreme seat longitudinal positions e.g. rear most seat longitudinal positions, and increasing span of the device. The ball holder has influence only with the base length such that the maximum traverse path and the distance between the rear most seat longitudinal positions remain same. The utilization of balls provides frictional coefficient of same profile in overlying region of the edge section. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a longitudinal sectional view of a longitudinal adjustment device in an extreme seat longitudinal position. Delta L : Projection L0 : Base length 5, 8 : Seat rails 9 : Rail profile 12 : Balls 14 : Ball holder 14a : Base section 14b : Edge section.