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Device for longitudinal positioning of a vehicle seat

  • US 5,717,300 A
  • Filed: 02/24/1995
  • Issued: 02/10/1998
  • Est. Priority Date: 02/25/1994
  • Status: Expired due to Fees
First Claim
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1. A vehicle seat comprising:

  • a seat part mounted on a base so that said seat part can move forward and backward in a longitudinal direction,a backrest mounted on the seat part and able to pivot between a folded-down forward position and an upright position in which a user can sit down on the seat,adjustment means for enabling said user to displace the seat part longitudinally to a position chosen by said user along said base,an automatic displacement motor for automatically displacing the seat part forward as far as an end-of-travel position when the backrest is in said folded-down position, and for automatically displacing the seat part backward as far as said chosen position when the backrest is returned from said folded-down position to said upright position,a slider which can move longitudinally relative to the base,an abutment secured to the seat part,a locking member able to pivot on the seat part between an engagement position where said locking member can interfere with said slider and a non-obstructing position where said locking member does not interfere with said slider, said locking member being urged by a spring toward said engagement position and being displacable into said non-obstructing position by neutralizing means actuated by the backrest when said backrest is placed in said folded-down position, said locking member including an operative face pointing forward, the slider being locked relative to the seat part between the abutment and said operative face when said slider and said seat part are in a relative locking position when the locking member is in said engagement position and the backrest is in said upright position, the slider and the locking member respectively including surfaces designed to interact with each other in order to displace the locking member toward said non-obstructing position through a cam effect, without displacing the slider, when the seat part is being displaced automatically backward, so that the seat part and the slider can come back into the locking position relative to the slider,a sensor mounted on said seat part for sensing the slider when said slider is in the locking position relative to the seat part,and means for stopping the action of the automatic displacement motor when said locking position is detected by the sensor and when the backrest is in said upright position.

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