Rail and vehicle seat

Patent metadata

Field	Value
Publication number	US-11230208-B2
Application number	US-201716334162-A
Country	US
Kind code	B2
Filing date	Sep 20, 2017
Priority date	Sep 21, 2016
Publication date	Jan 25, 2022
Grant date	Jan 25, 2022

Abstract

A vehicle seat longitudinal adjuster ( 106 ) includes a seat track pair ( 1 ) with a lower seat track ( 2 ) and an upper seat track ( 4 ) that mutually engage one another for guided relative and longitudinal direction (x) movement. The lower seat track ( 2 ) has a substantially C-shaped profile ( 20, 22 ) with sections ( 24 ) that are bent downward at the ends. The upper seat track ( 4 ) has a substantially U-shaped profile ( 40, 42 ) with end sections ( 44 ) that are bent upward; the relative displaceability of the two seat tracks ( 2, 4 ) with respect to one another is limited by means of an interaction of an end stop ( 30 ) disposed on the lower seat track ( 2 ) with a stop element ( 48 ) disposed on the upper seat track ( 4 ), and wherein the end stop ( 30 ) is designed in the form of an extension of part of the downward bent sections ( 24 ) and the lower seat track ( 2 ) comprises a slotted hole ( 32 ) in the region of the end stop ( 30 ).

First claim

The invention claimed is:

1. A longitudinal adjuster comprising:
at least one seat rail pair which is formed by a lower seat rail and an upper seat rail which is displaceably guided relative to the lower seat rail in a longitudinal direction,
wherein the two seat rails of the seat rail pair mutually engage around each other,
wherein the lower seat rail has a substantially C-shaped profile with end portions which are bent downward and the upper seat rail has a substantially U-shaped profile having end portions which are bent upward;
an end stop; and
a stop element,
wherein a relative displaceability of the two seat rails with respect to each other is limited by a cooperation of the end stop, which is arranged on the lower seat rail, with the stop element, which is integrally formed from the upper seat rail, wherein a free cut is only located on three sides of the stop element in the upper rail,
wherein the stop element is integrally formed from said upper seat rail first by two bridges extending transverse the longitudinal direction from said upper seat rail, wherein said bridges extend on either side of a stop element opening, and second by a web extending between the bridges and parallel the longitudinal direction, wherein said stop element opening extends from said web to a connection point between said bridges and said upper seat rail,
wherein the end stop is integrally formed from the downwardly bent portions and the lower seat rail has an elongate hole adjacent to the end stop;
wherein the end stop has two adjacent stop faces which are, viewed in a transverse direction, arranged at an obtuse angle relative to each other.

2. The longitudinal adjuster as claimed in claim 1 , wherein the end stop, as a result of the elongate hole, is connected to the downwardly bent portion of the lower seat rail only by means of two bridges remaining at a side of the elongate hole.

3. The longitudinal adjuster as claimed in claim 1 , wherein the end stop with respect to an extent in the longitudinal direction is arranged in a region of a front and/or rear end of the lower seat rail.

4. The longitudinal adjuster as claimed in claim 1 , wherein the lower seat rail includes a tooth arrangement and the end stop protrudes further downward than the tooth arrangement.

5. The longitudinal adjuster as claimed in claim 4 , wherein the end stop, with respect to an extent in the longitudinal direction, is arranged substantially in alignment with the tooth arrangement.

6. The longitudinal adjuster according to claim 1 , wherein the end stop, with respect to an extent in the longitudinal direction, is arranged in front of and/or behind a tooth arrangement of the lower seat rail.

7. The longitudinal adjuster as claimed in claim 1 , wherein the stop element is deployed in a transition region between the U-shaped profile of the upper seat rail and the respective end portions.

8. The longitudinal adjuster as claimed in claim 1 , wherein the stop element is constructed substantially parallel with the transverse direction.

9. The longitudinal adjuster as claimed in claim 1 , wherein two end stops are provided, one in a region of a front end of the lower seat rail and one in a region of a rear end of the lower seat rail.

10. The longitudinal adjuster as claimed in claim 9 , wherein the stop element is arranged between the two end stops.

11. The longitudinal adjuster as claimed in claim 1 , wherein the stop element is arranged in a central third of the upper seat rail in the longitudinal direction.

12. A vehicle seat having a longitudinal adjuster comprising:
at least one seat rail pair which a formed by a lower seat rail and an upper seat rail which is displaceably guided relative to the lower seat rail in a longitudinal direction,
wherein the two seat rails of the seat rail pair mutually engage around each other,
wherein the lower seat rail has a substantially C-shaped profile with end portions which are bent downward and the upper seat rail has a substantially U-shaped profile having end portions which are bent upward;
an end stop; and
a stop element,
wherein a relative displaceability of the two seat rails with respect to each other is limited by a cooperation with the end stop, which is arranged on the lower seat rail, with the stop element, which is formed from the upper seat rail,
wherein a free cut is only located on three sides of the stop element in the upper rail,
wherein the end stop is integrally formed from the downwardly bent portions and the lower seat rail has an elongate hole adjacent to the end stop,
wherein the end stop has two adjacent stop faces which are arranged at an obtuse angle relative to each other;
wherein the stop element is integrally formed from said upper seat rail first by two bridges extending transverse the longitudinal direction from said upper seat rail, wherein said bridges extend on either side of a stop element opening, and second by a web extending between said bridges and parallel the longitudinal direction, wherein said stop element opening extends from said web to a connection point between said bridges and said upper seat rail.

13. The vehicle seat as claimed in claim 12 , wherein two bridges, at a side of the elongate hole, connect the end stop to the downwardly bent portion of the lower seat rail.

14. The vehicle seat as claimed in claim 12 , wherein the end stop, with respect to an extent in the longitudinal direction, is arranged in a region of a front end and/or a rear end of the lower seat rail.

15. The vehicle seat as claimed in claim 12 , wherein the lower seat rail includes a tooth arrangement and the end stop protrudes downward an extent that is greater than a downward extent of the tooth arrangement.

16. The vehicle seat as claimed in claim 15 , wherein the end stop, with respect to an extent in the longitudinal direction, is arranged substantially in alignment with the tooth arrangement.

Assignees

• Adient Luxembourg Holding Sarl
• Keiper Seating Mechanisms Co Ltd

Inventors

• Flick Joachim
• Sprenger Erik
• Quast Ingo
• Turan Turgay

Classifications

• B60N2/0705 Primary

  omega-shaped · CPC title

• B60N2/08

  characterised by the locking device · CPC title

• B60N2/0818

  inside the rail · CPC title

• B60N2/07

  Slide construction · CPC title

• B60N2/0727 Primary

  Stop members for limiting sliding movement · CPC title