Slide rail for motor vehicule seat

• US 8,814,122 B2
• Filed: 10/04/2012
• Issued: 08/26/2014
• Est. Priority Date: 10/11/2011
• Status: Active Grant

• Current Assignee: Faurecia Sieges D'Automobile (Stellantis NV)
• Original Assignee: Faurecia Sieges D'Automobile (Stellantis NV)
• Inventors: Couasnon, Christian
• Primary Examiner(s): McKinnon, Terrell
• Assistant Examiner(s): Breslin, Daniel J
• Application Number:
  US13/645,106
• Publication Number:
  US 20130087674A1
• Time in Patent Office: 691 Days
• Field of Search: 248/429, 248/430, 74/891.4, 324/207.26, 324/207.13, 324/207.24, 340/686.1, 296/65.12, 296/65.13, 296/65.15
• US Class Current: 248/429
• CPC Class Codes: B60N 2/002 Seats provided with an occupancy detection means mounted therein or thereon detection means responsive to presence or absence of children B60N2/266
• CPC Class Codes: B60N 2/02246 Electric motors therefor
• CPC Class Codes: B60N 2/0244 with logic circuits
• CPC Class Codes: B60N 2/067 by linear actuators, e.g. linear screw mechanisms
• CPC Class Codes: B60R 21/015 including means for detecting the presence or position of passengers, passenger seats or child seats , and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
• CPC Class Codes: Y10T 74/18792 including worm

Abstract

A slide rail for motor vehicle seat comprising a first profile section, attached to said vehicle, with a cross-section having a bottom and two side parts, a second profile section, guided translationally relative to the first profile section along the longitudinal axis, the second profile section having a cross-section with a web and first and second side flanges, a fixed motorization element connected to the first profile section, a movable motorization element connected to the second profile section, a sensor attached to the second profile section, the sensor being suitable for detecting the presence of the fixed motorization element when the sensor is opposite a portion of the fixed motorization element.

Claims

1. A slide rail for motor vehicle seat, comprising:

a first profile section, attached to said vehicle, extending along a longitudinal axis, said first profile section having a cross-section with a bottom and two side parts,

a second profile section, guided translationally relative to the first profile section and that moves relative to said first profile section along the longitudinal axis, said second profile section having a cross-section with a central part with a U-shape open toward the bottom of the first profile section, having a web and first and second side flanges,

a fixed motorization element connected to the first profile section, the fixed motorization element being a helical screw fixedly secured to the first profile section, wherein the helical screw is arranged at a distance from the bottom of the first profile section and the sensor comprises a sensitive part that detects the helical screw,

a movable motorization element connected to the second profile section, cooperating with the fixed motorization element, the movable motorization element including one of a nut and pinion gear; and

a sensor attached to the second profile section, said sensor that detects the presence of the fixed motorization element when said sensor is opposite a portion of the fixed motorization element.

2. The slide rail for motor vehicle seat according to claim 1, wherein the sensor is entirely contained within an inner space of the second profile section, said inner space being delimited by said web and the first and second side flanges.

3. The slide rail for motor vehicle seat according to claim 2, wherein the sensor is attached near the front end of the second profile section.

4. The slide rail for motor vehicle seat according to claim 3, wherein the movable motorization element is a captive nut rotated by a drive mechanism.

5. The slide rail for motor vehicle seat according to claim 1, wherein the sensor comprises a sensitive part that detects the upper portion of the helical screw.

6. The slide rail for motor vehicle seat according to claim 2, wherein the sensor is a Hall effect sensor or an inductive proximity sensor.

7. The slide rail for motor vehicle seat according to claim 1, wherein the sensor comprises a connection oriented in parallel to the longitudinal axis and wherein said connection is located within the inner space delimited by said web and the first and second side flanges.

8. A motor vehicle seat comprising at least one slide rail according to claim 1.