Vehicle seat

Patent metadata

Field	Value
Publication number	US-10065532-B2
Application number	US-201514942638-A
Country	US
Kind code	B2
Filing date	Nov 16, 2015
Priority date	Nov 16, 2015
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

A longitudinally adjustable vehicle seat comprises a seat frame, a backrest pivotally mounted on the seat frame and foldable down in the direction of a seat surface of the seat frame, a longitudinal rail guide having a guide rail pair 2 including a lower guide rail 21 and an upper guide rail 22, a seat adjuster mechanism including a releasable locking device 3 for locking and unlocking the position of the upper guide rail 22 relative to the lower guide rail 21 in a design position P between an internal full rear limit stop and a comfort full forward limit stop 62 defining a functional comfort adjustment range D, an easy-entry mechanism for displacing the vehicle seat to an extended travel full forward position C upon folding down the backrest onto the seat surface, and a pivotable over-travel and limit stop bracket 5 which is adapted to rotate to bypass the comfort full forward limit stop 62 upon activation of the easy-entry mechanism for entering an extended travel range.

First claim

The invention claimed is:

1. A longitudinally adjustable vehicle seat comprising
a seat frame,
a backrest pivotally mounted on the seat frame and foldable down in the direction of a seat surface of the seat frame,
a longitudinal rail guide having at least one guide rail pair including a lower guide rail fixed to the vehicle structure and an upper guide rail fixed to the seat frame and displaceable along the lower guide rail,
a seat adjuster mechanism including a releasable locking device for locking and unlocking the position of the upper guide rail relative to the lower guide rail in a design position of a passenger between a full rear limit stop and a comfort full forward limit stop defining a functional comfort adjustment range within which the vehicle seat is adjustable in the design position,
an easy-entry mechanism for displacing the vehicle seat to a front position upon folding down the backrest onto the seat surface, and
an over-travel and limit stop mechanism including a pivotable over-travel and limit stop bracket rotatably mounted to the upper guide rail, said pivotable over-travel and limit stop bracket being adapted to rotate to bypass the comfort full forward limit stop upon activation of the easy-entry mechanism for entering an extended travel range and comprising a limit stop arm configured to strike against the comfort full forward limit stop defining the comfort full forward position of the functional comfort adjustment range, wherein said limit stop arm is adapted to accommodate at least two different travel ranges to compensate for at least two functional travel ranges between at least two seat adjuster variants.

2. The vehicle seat of claim 1 wherein said pivotable over-travel and limit stop bracket is secured to the upper guide rail at a set position in order to achieve the desired functional comfort adjustment range.

3. The vehicle seat of claim 1 wherein said pivotable over-travel and limit stop bracket is connected to the upper guide rail and comprises a control arm and a rotation axis between the control arm and the limit stop arm, said control arm being connected to the easy-entry mechanism.

4. The vehicle seat of claim 1 wherein travel limiters are selectable from a set of at least two different sizes of travel limiters, wherein any travel limiter from the set is addable to said limit stop arm and the set of at least two different sizes of travel limiters serves to compensate for at least two functional travel ranges between at least two seat adjuster variants.

5. The vehicle seat of claim 4 wherein said travel limiters are sleeves of at least two different sizes in the direction of travel with a connection portion for connecting the sleeves to the end of said limit stop arm of the pivotable over-travel and limit stop bracket.

6. The vehicle seat of claim 3 wherein the rotation axis of said pivotable over-travel and limit stop bracket is incorporated into a bearing of a seat adjuster adapter secured to said upper guide rail.

7. The vehicle seat of claim 5 wherein said pivotable over-travel and limit stop bracket is spring-loaded by means of a torsion spring which is arranged on the rotation axis, one end of said torsion spring being supported by the pivotable over-travel and limit stop bracket and the other end of said torsion spring being supported by said seat adjuster.

8. The vehicle seat of claim 1 wherein said seat adjuster mechanism comprises a full forward limit stop and a seat adjuster bracket having a front surface in the direction of travel, which strikes against the full forward limit stop in the extended travel full forward position after the pivotable over-travel and limit stop bracket has bypassed the comfort full forward limit stop upon activation of the easy-entry mechanism.

9. The vehicle seat of claim 8 wherein the full forward limit stop comprises an extended travel full forward limit stop to be connected to the lower guide rail and the DE comfort full forward limit stop which is configured to extend into the path of travel of the limit stop arm of the pivotable over-travel and limit stop bracket to an extent that the limit stop arm strikes against the comfort full forward limit stop, but is configured to bypass the comfort full forward limit stop upon activation of the easy-entry mechanism.

10. The vehicle seat of claim 3 wherein said control arm of said pivotable over-travel and limit stop bracket is connected to a tab of an easy-entry rotation bracket of said easy-entry mechanism via a solid rod.

11. The vehicle seat of claim 3 wherein said control arm of said pivotable over-travel and limit stop bracket is connected to a Bowden cable which is routed up the backrest of the vehicle seat to an easy-entry activation lever, the Bowden cable mount being added to an easy-entry rotation bracket secured to the upper guide rail.

12. The vehicle seat of claim 3 wherein said control arm of said pivotable over-travel and limit stop bracket is connected to a tab of an easy-entry rotation bracket of said easy-entry mechanism which is connected to a Bowden cable of said easy-entry mechanism.

13. The vehicle seat of claim 1 wherein the longitudinal rail guide has
first and second guide rail pairs each including a lower guide rail fixed to the vehicle structure and an upper guide rail fixed to the seat frame and displaceable along the lower guide rail,
a seat adjuster mechanism including a releasable locking device for locking and unlocking the position of the upper guide rails relative to the lower guide rails in a design position of a passenger between a full rear limit stop and a comfort full forward limit stop defining a functional comfort adjustment range within which the vehicle seat is adjustable in the design position,
an easy-entry mechanism for displacing the vehicle seat to a front position upon folding down the backrest onto the seat surface,
an over-travel and limit stop mechanism including pivotable over-travel and limit stop brackets rotatably mounted to the upper rails, said pivotable over-travel and limit stop brackets being adapted to rotate to bypass the comfort full forward limit stops upon activation of the easy-entry mechanism for entering an extended travel range.

14. The vehicle seat of claim 1 , wherein an easy-entry rotation bracket comprised in said easy-entry mechanism including a tab for receiving a solid rod or a Bowden cable, said pivotable over-travel and limit stop bracket, and a set of at least two sleeves of different size in the direction of travel of the vehicle seat to compensate for at least two functional travel ranges between at least two seat adjuster variants and being addable to said limit stop arm of said pivotable over-travel and limit stop bracket to form a complete packaged module.

Assignees

• Brose Fahrzeugteile

Inventors

• Ioppolo Leo
• Becker David
• Sabo Sean

Classifications

• B60N2/12 Primary

  slidable and tiltable · CPC title

• B60N2/20

  the back-rest being tiltable, e.g. to permit easy access (B60N2/04, B60N2/22 {, B60N2/3002} take precedence) · CPC title

• B60N2/0715

  C or U-shaped · CPC title

• B60N2/0875

  in a vertical direction · CPC title

• B60N2/929

  linear · CPC title