Vehicle seat

Patent metadata

Field	Value
Publication number	US-11845366-B2
Application number	US-202217703463-A
Country	US
Kind code	B2
Filing date	Mar 24, 2022
Priority date	Mar 30, 2021
Publication date	Dec 19, 2023
Grant date	Dec 19, 2023

Abstract

A seat of a vehicle comprising a seat base, fixation means for fixing to the floor of a vehicle, a front connecting rod pivoting along a first axis at the fixation means and along a second axis at the base, a lower rear connecting rod pivoting along a third axis at the fixation means, an upper rear connecting rod pivoting along a fourth axis at the base and along a fifth axis at the lower rear connecting rod, a locking means able to transition: from a locked state, wherein it prevents the rotation of the lower rear connecting rod in relation to the upper rear connecting rod, to an unlocked state, wherein it enables the rotation of the lower rear connecting rod in relation to the upper rear connecting rod, and conversely.

First claim

The invention claimed is:

1. A vehicle seat comprising:
a seat base presenting a front edge and a rear edge interconnected by a first lateral edge and a second lateral edge,
fixation means for fixing the seat base to a floor of a vehicle,
connection means for connecting the seat base to the fixation means, configured so as to enable a displacement of the seat base in relation to the fixation means along a longitudinal direction and along a vertical direction of the seat,

wherein the connection means comprise:
a front connecting rod presenting a first longitudinal end pivotably hinged along a first transverse axis of the seat to the fixation means and a second longitudinal end pivotably hinged along a second transverse axis to the seat base, at its front edge,
a lower rear connecting rod presenting a first longitudinal end pivotably hinged along a third transverse axis of the seat to the fixation means and a second longitudinal end,
an upper rear connecting rod presenting a first longitudinal end pivotably hinged along a fourth transverse axis to the seat base, at its rear edge, and a second longitudinal end pivotably hinged along a fifth transverse axis to the second longitudinal end of the lower rear connecting rod,
wherein the seat further comprises a non-reversible electric motor configured to:
drive a rotation of the front connecting rod in relation to the fixation means about the first transverse axis at its first longitudinal end, when activated, and
prevent the rotation of the front connecting rod in relation to the fixation means about the first transverse axis at its first longitudinal end, when inactivated,

wherein the seat further comprises a first locking means able to transition:
from a locked state, wherein the first locking means prevents a rotation of the lower rear connecting rod in relation to the upper rear connecting rod about the fifth transverse axis, to
an unlocked state, wherein the first locking means enables the rotation of the lower rear connecting rod in relation to the upper rear connecting rod about the fifth transverse axis, so as to enable pivoting of the seat base at the second longitudinal end of the front connecting rod about the second transverse axis of the seat so as to move the rear edge of the seat base closer to or away from the fixation means along the vertical direction of the seat, and conversely.

2. The vehicle seat of claim 1 , wherein the first locking means is arranged to be able to transition from its locked state to its unlocked state only when the non-reversible motor is inactivated.

3. The vehicle seat of claim 1 , wherein the first locking means comprises:
a hook pivotably mounted on the lower rear connecting rod along a sixth transverse axis of the seat,
a pin arranged on the upper rear connecting rod and extending along the transverse direction of the seat,
the hook and the pin being configured such that the first locking means transitions from its locked state to its unlocked state, and conversely, by rotation of the hook in relation to the lower rear connecting rod about the sixth transverse axis of the seat, with:
the hook engaged with the pin in the locked state of the first locking means, and
the hook separated from the pin in the unlocked state of the first locking means.

4. The vehicle seat of claim 3 , wherein the hook is pivotably mounted on the lower rear connecting rod along the sixth transverse axis at an intermediate point of the lower rear connecting rod between the first longitudinal end and the second longitudinal end.

5. The vehicle seat of claim 1 , further comprising a first manual control means coupled to the first locking means, the first control means being configured so as to drive the transition of the first locking means from its locked state to its unlocked state, and conversely, under an effect of a manual action by a user on the first manual control means.

6. The vehicle seat of claim 5 , wherein the first manual control means comprises a knob pivotably mounted on the seat base along a seventh transverse axis of the seat, the knob being configured to transition: from a first position about the seventh transverse axis of the seat, wherein the first locking means is in its locked state, to a second position about the seventh transverse axis of the seat, wherein the first locking means is in its unlocked state.

7. The vehicle seat of claim 6 , wherein the first manual control means comprises a spring element configured to urge the knob into the second position about the seventh transverse axis of the seat.

8. The vehicle seat of claim 6 , wherein the knob is mounted on the seat base at its rear edge, projecting towards the bottom of the seat base along the vertical direction of the seat.

9. The vehicle seat of claim 1 , wherein the fixation means comprise two slide rails, arranged on both sides of the lower base along a transverse direction of the lower base, each presenting a lower profile configured to be fixed to the floor of the vehicle, and slidingly receiving, along the longitudinal direction of the seat, an upper profile, and wherein the first longitudinal end of the front connecting rod and the first longitudinal end of the lower rear connecting rod are pivotably hinged, respectively along the first transverse axis and along the third transverse axis, to the upper profile of a slide rail.

10. The vehicle seat of claim 9 , further comprising a second locking means for locking the slide rails, configured to transition: from a locked state, wherein the second locking means prevents the sliding of the upper profile of each of the slide rails in relation to the lower profile of each of the slide rails, so as to prevent a translational displacement of the seat in relation to the floor of the vehicle along the longitudinal direction of the seat, to an unlocked state, wherein the second locking means enables the sliding of the upper profile of each of the slide rails in relation to the lower profile of each of the slide rails, so as to enable the translational displacement of the seat in relation to the floor of the vehicle along the longitudinal direction of the seat, and conversely.

11. The vehicle seat of claim 10 , further comprising a second manual control means coupled to the second locking means, the second manual control means being configured so as to drive the transition of the second locking means from its locked state to its unlocked state, and conversely, under an effect of a manual action by a user on the second manual control means.

12. The vehicle seat of claim 10 , further comprising a first manual control means coupled to the first locking means, the first control means being configured so as to drive the transition of the first locking means from its locked state to its unlocked state, and conversely, under an effect of a manual action by a user on the first manual control means, wherein the first control means simultaneously cooperates with first locking means and second locking means, such that a manual action by a user on the first manual control means enables the second locking means to transition from its locked state to its unlocked state, and conversely.

13. The vehicle seat of claim 1 , further comprising a third locking means for locking the seat base in relation to the fixation means, configured to transition: from a locked state, wherein the third locking means prevents the displacement of the seat base in relation to the fixation means by use of the connection means, to an unlocked state, wherein the third locking means enables the displacement of the seat base in relation to the fixation means by use of the connection means, a

Assignees

• Faurecia Sieges Dautomobile

Inventors

• Roche Sylvain
• Epaud David
• Bouzid Farouk

Classifications

• B60N2/12 Primary

  slidable and tiltable · CPC title

• B60N2/02246

  Electric motors therefor · CPC title

• B60N2/045

  Longitudinal adjustment by means of articulated rods supporting the seat, e.g. parallelogram mechanisms (B60N2/38 takes precedence) · CPC title

• B60N2/309 Primary

  rods · CPC title

• B60N2/919

  Positioning and locking mechanisms (B60N2/16, B60N2/18, B60N2/22, B60N2/225 take precedence) · CPC title