CN213892274U - Vehicle seat - Google Patents

Abstract

A vehicle seat (1) includes: -a lower frame (2), -an armrest (3) having at least a front side arm (32) and a rear side arm (33) connected to each other by a central portion (34), the armrest (3) being fixed to the lower frame (2) so as to pivot at least about a substantially transverse pivot axis (a 3). Each side arm (32, 33) has a longitudinal upper end (E32, E33) accommodating a hand support (S32) and an elbow support (S33), respectively. Since the forearm of the user is intended to extend along an axis (B) substantially tangential to the hand support (S32) and the elbow support (S33), the armrest (3) is configured to pivot relative to the lower frame (2), at least partially about the pivot axis (A3), so that the axis (B) can be tilted relative to the longitudinal axis (X) of the seat (1).

Description

Vehicle seat

Technical Field

The present invention relates to a vehicle seat with armrests, and more particularly to a seat for a motor vehicle.

Background

As is known, a vehicle generally comprises at least one seat intended to accommodate a driver or a passenger of the vehicle, hereinafter referred to as "user". When the seat is a separate seat that may be arranged at the front or rear of the vehicle, the seat may be designed to accommodate one person. When the seat is a rear bench seat of a vehicle, for example, the seat may also be part of a bench capable of accommodating a plurality of persons. Thus, within the meaning of the present invention, the term "seat" refers to both a personal seat and a bench seat. Furthermore, the term "seat" according to the present invention denotes a front seat of the vehicle as well as a rear seat of the vehicle. Similarly, the invention can be implemented as a seat intended for any type of vehicle, in particular for a motor vehicle.

The seat generally comprises a lower frame configured to be connected to the floor of the vehicle, the lower frame having a seat portion, the front and rear edges of which are connected to each other by two side edges, two sliders each arranged at each side of the lower frame along a transverse axis Y of the seat and each extending along a longitudinal axis X of the seat and configured to be fixed to the floor of the vehicle and to allow the seat to slide along said longitudinal axis X of the seat, and a lower structure connecting said sliders to the seat portion.

The seat also typically comprises a backrest hinged to pivot about said transverse axis Y of the seat at the rear edge of the seat part of the lower frame.

As is known, the lower frame can house armrests intended to form a support surface for the elbows, forearms or hands of the user's arms. The position of the armrests relative to the lower frame of the seat is typically adjustable to suit the needs of the user.

In particular, in prior art seats, the seat may comprise armrests mounted to move translationally with respect to the body, in particular in two directions substantially perpendicular to each other:

a substantially vertical orientation of the seat, in other words substantially perpendicular to the plane of the vehicle floor,

a substantially longitudinal direction of the seat, in other words a direction substantially parallel to the seat translational movement with respect to the vehicle floor by means of the slider connecting the lower frame to the vehicle floor.

By translating the armrest relative to the lower frame in each of said substantially longitudinal and vertical directions of the seat, the position of the armrest relative to the lower frame of the seat and relative to the backrest of the seat can be adjusted in order to position it in a position desired by the seat occupant, for example in order to ensure his or her comfort.

However, the possibility of translating the armrest relative to the seat in two different directions of the seat complicates the design of the armrest and increases its cost price and risk of failure, but also its weight, which is almost incompatible with the current desire to reduce vehicle fuel consumption.

Such a design also complicates the adjustment of the armrest position of the user relative to the seat, in particular because a translational movement in said substantially longitudinal and vertical direction of the seat is not necessarily an intuitive movement for the user.

Furthermore, the kinematics of the seat become more complex when armrests are provided, wherein the translational movements relative to the seat in each of said substantially longitudinal and vertical directions of the seat are coordinated, in particular by means of elements of a kinematic chain between the armrests and the seat, which exacerbates the above-mentioned problem.

It is therefore an object of the present invention to overcome the drawbacks of the prior art vehicle seat armrests by proposing a vehicle seat armrest of simplified design, reduced weight and cost and reduced risk of failure, as well as a vehicle seat armrest which is easier for the user to position.

SUMMERY OF THE UTILITY MODEL

A vehicle seat is proposed, comprising:

-a lower frame configured to be connected to the floor of the vehicle, having a seat part, the front and rear edges of which are connected to each other by two side edges; two slides, each arranged at each side of the lower frame along a transverse axis Y of the seat and each extending along a longitudinal axis X of the seat; and a lower structure connecting the slider to the seat part,

-an armrest having at least two side arms: front and rear side arms connected to each other by a central portion, the armrest being fixed to the lower frame at least at its central portion 34 so as to pivot about a pivot axis a3 substantially parallel to the transverse axis Y of the seat.

In the present invention, each side arm has a longitudinal upper end, each longitudinal upper end receiving a support element for the user's arm, the support element of the front side arm being referred to as a hand support, which is configured to at least partially receive the user's hand, and the support element of the rear side arm being referred to as an elbow support, which is configured to each at least partially receive the user's elbow and possibly the forearm.

In the present disclosure, when the user's forearms are received on the hand support and elbow support of the armrest, which is intended to extend along an axis B substantially tangential to the hand support and elbow support, the armrest is configured to pivot relative to the lower frame at least partially about a pivot axis a3 such that the axis B is capable of relative tilting relative to the longitudinal axis X of the seat.

In optional features of the invention, the following are used alone or in combination:

the armrests have a substantially U or V shape, and the longitudinal upper end of each side arm is arranged above the central portion of the armrest along the vertical axis Z of the seat;

-an armrest is configured such that there is a free space between the hand support and the elbow support along an axis B substantially tangential to the hand support and elbow support of the armrest;

the armrests are configured to pivot at least partially about the pivot axis a3 with respect to the lower frame, so that the axis B can tilt with respect to the longitudinal axis X of the seat within an angular amplitude defined between a minimum tilt value, at which the armrests tilt towards the rear edge of the seat portion of the lower frame, and a maximum tilt value, at which the armrests tilt towards the front edge of the seat portion,

and wherein the seat comprises a locking system configured to be changed from a locked state to an unlocked state:

a locked state, ensuring locking of the relative inclination between axis B and longitudinal axis X, including preventing rotation of the armrest relative to the lower frame about pivot a3,

an unlocked condition allowing the adjustment of the relative inclination between axis B and longitudinal axis X upon release of the rotation of the armrest with respect to the lower frame about pivot a3, the locking system being actuated by the control device to pass from its locked condition to the unlocked condition and being configured to define a plurality of discrete or continuous locking positions corresponding to different inclinations of axis B with respect to longitudinal axis X between a minimum inclination value and a maximum inclination value;

-the minimum inclination is between-30 ° and-10 °;

-the maximum inclination is between +10 ° and +30 °;

-an attachment plate of an armrest is integrally fixed to the lower frame of the seat, the armrest being connected to said attachment plate by a connecting rod having two longitudinal ends, and:

the lever is connected at its first longitudinal end to the attachment plate so as to pivot about a pivot axis A8 substantially parallel to the pivot axis A3,

the bar is connected at its second longitudinal end to the armrest so as to pivot about pivot A3, the armrest being configured to pivot relatively with respect to the bar about pivot A3, and the bar being configured to pivot with respect to the attachment plate about pivot A8 so as to allow:

-adjusting the inclination of the axis B substantially tangent to the hand support and to the elbow support with respect to the longitudinal axis X by the cumulative rotation of the armrest with respect to the rod and of said rod with respect to the attachment plate, about the pivot axis A3 and the pivot axis A8, respectively, and

adjusting the position of the pivot A3 along the longitudinal axis X and the vertical axis Z by rotation of the lever relative to the attachment plate about the pivot A8;

the locking system is further configured for:

in the locked state, the rotation of the lever relative to the lower frame about the pivot axis A8 is prevented in addition to the rotation of the armrest relative to the lever about the pivot axis A3,

in the unlocked condition, allowing the rotation of the rod with respect to the lower frame about the pivot axis A8 in addition to the rotation of the armrest with respect to the rod about the pivot axis A3, the locking system being configured to define a plurality of discrete or continuous locking positions corresponding to different inclinations of the axis B with respect to the longitudinal axis X between a minimum inclination value and a maximum inclination value and to different positions of the pivot axis A3 with respect to the pivot axis A8 along the vertical axis Z and along the longitudinal axis X;

the vehicle seat further comprises coordination means for coordinating the rotation of the armrest relative to the lever about pivot A3 and the rotation of the lever relative to the attachment plate about pivot A8;

-the coordination means comprises:

a first toothed pinion mounted to be rotatable relative to the lever about a pivot axis A3 at a second longitudinal end of the lever and driven by the handrail to rotate about a pivot axis A3,

a toothed portion fixed with respect to the attachment plate and having a plurality of teeth extending along a portion of a circle centred on the pivot axis A8 of the lever with respect to the attachment plate,

a second toothed pinion mounted on the lever so as to pivot about a pivot axis a93 substantially parallel to pivot axis A3 and to pivot axis A8 and interposed between the first toothed pinion and the toothed portion, the second toothed pinion meshing simultaneously with the first toothed pinion and the toothed portion;

the locking system includes a locking bar having a first longitudinal end and a second longitudinal end, having a locking lug configured to:

in the locked condition, interposed between two consecutive teeth of the first toothed pinion, to prevent the first toothed pinion from rotating about the pivot axis a3 with respect to the connecting rod; and

in the unlocked condition, at a distance from the teeth of the first toothed pinion so as to allow the latter to rotate about the pivot axis A3 with respect to the connecting rod, the locking lever being integrally fixed to the armrest, movably mounted so as to slide along the axis a51 with respect to said armrest, so as to be able to pass from its locked condition to its unlocked condition;

the connecting rod has a toothed portion at its second longitudinal end, the toothed portion having a plurality of teeth extending along a portion of a circle centered about the pivot axis A3 of the armrest relative to the rod and configured to receive a locking lug inserted between two consecutive teeth of the first toothed pinion when the locking lug is inserted between the two consecutive teeth so as to prevent the armrest from rotating about the pivot axis A3 relative to the rod.

The control means is arranged at the level of the lower surface of the hand support and is configured such that a user of the chair can manually operate the control means with at least one finger when the palm of the hand is located on the upper surface of the hand support;

the locking lever is arranged at the height of the side arm of the armrest such that the axis of translation a51 of the locking lever relative to the armrest is substantially parallel to the direction of extension of the side arm.

The receiving portion is configured to receive a human-machine interface or a device for connecting to an electronic device, the receiving portion being arranged at a longitudinal upper end of a front side arm of the armrest, in front of the hand support.

Armrests are secured to the side edges of the seat portion of the lower frame.

Drawings

Other features, details, and advantages of the present invention will become apparent from a reading of the following detailed description and a review of the associated drawings.

Figure 1 shows a perspective view of an armrest for a vehicle seat according to a first embodiment of the present invention,

figure 2 shows a side view of the armrest of figure 1,

figure 3 shows a perspective view of a detail of the hand support of the armrest of figure 1,

figure 4 shows a side view of a lower frame and an armrest of a vehicle seat according to a second embodiment of the invention,

figure 5 shows a detailed perspective view of the chair of figure 4,

fig. 6 shows a detailed side view of the seat of fig. 5, with the connecting rods removed,

fig. 7 shows a schematic view illustrating a vehicle seat according to an embodiment of the present invention, and different inclinations of the backrest with respect to the seat portion and different positions of the armrest with respect to the lower frame of the seat,

fig. 8 shows a schematic view of a vehicle seat according to an embodiment of the invention, with different inclinations of the backrest relative to the seat part and different positions of the armrest relative to the lower frame of the seat.

Detailed Description

The drawings and the following description contain substantially the same elements determined by their nature. They may thus be used not only to provide a better understanding of the invention, but may also contribute to its definition where appropriate.

Throughout this application, spatial directions are defined as follows:

the longitudinal direction of the seat corresponds to the direction in which the seat slides relative to the vehicle floor along a slide accommodated in the seat lower frame,

the vertical direction of the seat corresponds to a direction perpendicular to the plane of the floor of the vehicle to which the seat is fixed, and also perpendicular to the longitudinal direction of the seat,

the transverse direction of the seat is a direction perpendicular to the longitudinal and vertical directions.

An axis is defined as a straight line in a given direction, and may have a given direction (indicated by an arrow in the drawings attached to the present application). For example, the longitudinal axis is an axis along the longitudinal direction.

Furthermore, the front and rear are also to be understood according to the said longitudinal direction of the seat and oriented from the rear edge of the articulated backrest of the seat part towards the front edge of the seat part.

Similarly, the upper and lower parts are understood to be according to the vertical direction of the seat, and the orientation is from the slide towards the seat part of the lower frame of the seat.

Finally, throughout the present application, the expression substantially longitudinal, transverse or vertical refers to an orientation with respect to the longitudinal, vertical or transverse direction which is an angle of less than 30 ° and which may advantageously be zero.

The utility model relates to a vehicle seat 1, include:

a lower frame 2, configured to be connected to the floor of the vehicle, having a seat portion 21, the front edge AV and the rear edge AR of which seat portion 21 are connected to each other by two side edges BL, two sliders 22, one each arranged at each side of the lower frame 2 along the transverse axis Y of the seat and each extending along the longitudinal axis X of the seat 1, and a substructure 23, which connects said sliders 22 to the seat portion 21,

a handrail 3 having at least two side arms 32, 33, and in particular only two side arms 32, 33: the front side arms 32 and the rear side arms 33, which are connected to each other by a central portion 34, the armrest 3 being fixed at least to the lower frame 2 so as to pivot at its central portion 34 about a pivot axis a3 substantially parallel to the transverse axis Y of the seat 1.

According to the invention, each side arm 32, 33 has a longitudinal upper end E32, E33, each accommodating a support element S32, S33 for the user ' S arm, the support element S32 of the front side arm (referred to as hand support S32) being configured to at least partially receive the user ' S hand, and the support element S33 of the rear side arm 33 (referred to as elbow support S33) being configured to each at least partially receive the user ' S elbow and possibly forearm.

When the user 'S forearms are received onto the hand support S32 and the elbow support S33 of the armrest 3, the user' S forearms may be arranged to extend along an axis B that is substantially tangential to the hand support S32 and the elbow support S33.

Further, hand support S32 may include a substantially planar support surface M32 extending in plane P32 configured to receive and support a user 'S hand, and elbow support S33 may include a substantially planar support surface C33 extending in plane P33 configured to receive and support a user' S elbow.

The plane P32 may be located at a distance D32 from the pivot axis A3, while the plane P33 may be located at a distance D33 from the pivot axis A3, such that the distance D33 is different from the distance D32, and in particular strictly larger, as the difference between the distance D32 and the distance D33 may be between 10mm and 20 mm.

This offset between plane P32 and plane P33 advantageously makes it possible to ensure that a portion of the elbow and/or forearm of the user is supported on the elbow support S33 and that the hand of the user is supported on the hand support S32, irrespective of the inclination of the armrest 3 relative to the longitudinal axis X of the chair 1 relative to the pivot axis A3.

As can be seen in the embodiment of fig. 2, the distance D32 and the distance D33 may be defined as the distance separating the plane P32, then the plane P33 from the pivot axis a3 in a direction substantially perpendicular to the plane P32, then substantially perpendicular to the plane P33.

Advantageously, the armrest 3 may be configured to pivot at least partially about the pivot axis a3 with respect to the lower frame 2, and in particular such that the axis B may be relatively tilted with respect to the longitudinal axis X of the seat 1.

Thus, the chair 1 of the present invention makes it possible to adjust the position of the armrest 3, and in particular of the hand support S32 and the elbow support S33, by means of a pivoting movement of the armrest 3 with respect to the lower frame 2 of the chair 1, at least about the pivot axis a3, so that the user can benefit from a plurality of positions of his or her forearms, as can be seen in the embodiment of fig. 7 and 8, when accommodated on the hand support S32 and the elbow support S33 of the armrest 3, and for example on the support surface M32 and the support surface C33, substantially corresponding in particular to the axis B, in order to position the armrest 3 with respect to the lower frame 2, in order to provide the user, for example, with maximum comfort or optimal driving position or optimal position for working or reading, etc.

The design of such a vehicle seat 1 is simplified, since the pivoting movement of the armrest 3 about the pivot axis A3 may advantageously allow the position of the armrest 3 to be adjusted relative to the lower frame 2 along the longitudinal axis X and the vertical axis Z of the seat 1 in a combination of one rotation of the armrest 3 relative to the lower frame 2 about the axis A3, or again two rotations of the armrest 3 relative to the lower frame of the seat 2 about the pivot axis A3 and the pivot axis A8 substantially parallel to the axis A3, respectively, unlike prior art vehicle seats which provide at least two translational movements of the armrest relative to the lower frame of the seat.

Thus, the number of elements required for adjusting the position of the armrest 3 relative to the lower frame of the seat 1 is reduced, which also reduces the weight of such a vehicle seat 1.

Furthermore, and according to the findings of the utility model, such a movement for adjusting the position of the armrest 3 relative to the lower frame 2 is particularly intuitive for the user of the vehicle seat 1 of the invention, since the pivoting movement of the armrest 3 about the pivot axis A3 can advantageously follow the movement of the backrest 4 of the seat, which is articulated at the rear edge AR of the seat part 21, about the substantially transverse pivot axis a4 and thus substantially parallel to the pivot axis A3 of the armrest 3 relative to the lower frame 21, as can be seen more particularly in the exemplary embodiment of fig. 6 and 7.

Thus, the user can ensure that his or her arms will be in the desired positions regardless of the inclination of the backrest 4 with respect to the lower frame 2. To this end, the user need only pivot the armrest 3 about the pivot axis A3, or even about the pivot axes A3 and A8, and in particular with an inclination value similar to the inclination of the backrest 4 about the pivot axis a 4.

The armrests 3, and in particular the inclination of the axis B with respect to the longitudinal axis X, can be advantageously adjusted according to the adjustment of the inclination of the backrest 4 with respect to the vertical axis Z, in particular according to different inclination ranges of the backrest 4, for example:

the inclination of the backrest 4 with respect to the vertical axis Z, corresponding to the driving position, generally to the angle of the backrest 4 with respect to the vertical axis Z, ensures an inclination of the user's torso of 25 ° with respect to the vertical axis Z,

the inclination of the backrest 4 with respect to the vertical axis Z, corresponding to the work position, generally to the angle of the backrest 4 with respect to the vertical axis Z, ensures an inclination of the user's torso with respect to the vertical axis Z comprised between 30 ° and 35 °.

The inclination of the backrest 4 with respect to the vertical axis Z, corresponding to the rest position, generally to the angle of the backrest 4 with respect to the vertical axis Z, ensures an inclination of the user's torso with respect to the vertical axis comprised between 40 ° and 45 °.

Advantageously, means may be provided for coordinating the pivoting of the armrest 3 relative to the lower frame 2 at least about the pivot axis A3 and the pivoting of the backrest 4 relative to the lower frame 2 about the pivot axis a4, in order to ensure optimal positioning of the armrest 3 relative to the lower frame 2 according to the inclination of the backrest 4 relative to the lower frame 2, without the user having to adjust both the position of the armrest 3 relative to the lower frame 2 and the inclination of the backrest 4 relative to the lower frame 2.

Such a coordinating means may be an electronic device comprising one or more electric actuators, for example connected to an electronic control device, or a mechanical device comprising one or more articulated connecting rods, for example.

According to one embodiment, the armrest 3 has a substantially U or V shape, and the longitudinal upper end E32, E33 of each lateral arm 32, 33 is disposed above the central portion 34 of the armrest 3 along the vertical axis Z of the seat 1.

Thus, as can be seen from the exemplary embodiments of fig. 1, 2 and 4 to 6, the armrest 3 may advantageously comprise a free space 35 between the two side arms 32, 33, which makes it possible to considerably reduce the weight of the armrest 3 and thus of the vehicle seat 1 according to the invention.

In such an embodiment, the central portion 34 connects the two side arms 32, 33 at their longitudinal lower ends.

Alternatively, it is conceivable that the armrest 3 is of another form, such as, for example, if its two side arms 32, 33 substantially form an X, then the central portion 34 connects the side arms 32, 33 at their middle portions, between the two longitudinal ends of the side arms 32, 33.

According to one embodiment, the armrest 3 is configured with a free space 36 between the hand support 32 and the elbow support 33, along an axis B substantially tangential to the hand support 32 and the elbow support of the armrest 33. The free space 36 between hand support S32 and elbow support S33 may extend the free space 35 between the two side arms 32, 33, forming a single space.

This advantageous arrangement of the invention also makes it possible to reduce the weight of the armrest 3 and thus of the vehicle seat 1 according to the invention.

Indeed, according to the observations of the utility model, even if only a portion of his or her arm is accommodated on the support element for the arms S32, S33, it is possible to ensure sufficient support and comfort for the user of the vehicle seat 1, in which case the elbow and possibly a portion of the forearm (on the elbow support S33 and in particular on the support surface C33) and the hand (on the hand support S32 and in particular on the support surface M32), the remaining portion of the forearm, between the elbow and possibly a portion of the forearm, and the hand, can remain above the free space without support by the armrest 3.

According to one embodiment, the armrest 3 is configured to pivot at least partially about the pivot axis a3 relative to the lower frame 2, such that the armrest 3, and in particular the axis B, may be tilted relative to the longitudinal axis X of the seat 1 within an angular range defined between a minimum tilt value I3MIN, at which the armrest 3 is tilted towards the rear edge AR of the seat portion 21 of the lower frame 2, and a maximum tilt value I3MAX, at which the armrest 3 is tilted towards the front edge AV of the seat portion 21 of the lower frame 2, and wherein the seat 1 comprises a locking system 5 configured to be able to change from a locked state to an unlocked state:

a locked state, ensuring that the armrest 3, and in particular the relative inclination I3 between axis B and axis X, is locked, including preventing the armrest 3 from rotating about the pivot axis A3 with respect to the lower frame 21,

an unlocked state allowing to adjust the armrest 3, and in particular the relative inclination I3 between axis B and axis X, with the release of the rotation of the armrest 3 about the pivot a3 with respect to the lower frame 21.

The locking system 5 can be actuated by the control device 6 to change from its locked state to its unlocked state.

The locking system 5 may advantageously be configured to define a plurality of discrete or continuous locking positions between a minimum inclination value I3MIN and a maximum inclination value I3MAX, corresponding to different inclinations of the handrail 3, and in particular of the axis B, with respect to the longitudinal axis X, the minimum inclination value I3MIN as shown in the rightmost view of the exemplary embodiment of fig. 7 and 8 and the maximum inclination value I3MAX as shown in the leftmost view of the exemplary embodiment of fig. 7 and 8.

Thus, thanks to such a locking system 5, once the armrest 3 is in the position desired by the user relative to the lower frame 2, the user can lock said position of the armrest 3 by means of the locking system 5 in a plurality of positions allowed by the locking system 5.

As shown in the embodiment of fig. 2, the inclination I3 is defined as an absolute value, and the positive direction corresponds to an orientation from the vertical axis Z towards the longitudinal axis X.

Thus, the inclination of the handrail 3, and in particular of the axis B, with respect to the longitudinal axis X, and as shown in the exemplary embodiments of fig. 2, 4 and 6 and in the leftmost views of the exemplary embodiments of fig. 7 and 8, is positive.

Similarly, the inclination of the handrail 3, and in particular of the axis B, with respect to the longitudinal axis X, and as shown in the rightmost views of the exemplary embodiment of fig. 7 and 8, is negative.

The maximum I3MAX and minimum I3MIN inclination values of the armrest, and in particular of the axis B, with respect to the longitudinal axis X can advantageously be fixed with variation of the maximum and minimum values of the inclination of the backrest 4 about the pivot axis a4 with respect to the longitudinal axis X.

According to one embodiment, the minimum inclination value I3MIN is between 30 ° and-10 °.

According to one embodiment, the maximum inclination value I3MAX is between +10 ° and +30 °.

The locking system 5 may be configured such that the inclination of the armrest 3, and in particular of the axis B, with respect to the longitudinal axis X varies by less than 5 °, preferably by less than 3 °, more preferably by less than 2 °, for example by 1 °, between two discrete, consecutive locking positions between a minimum inclination value I3MIN and a maximum inclination value I3 MAX. The user therefore has a large number of adjustment positions and, at different inclinations I3 of the armrest 3, and in particular of the axis B, relative to the longitudinal axis X, and fine-tunes the inclination I3 of the armrest 3, and in particular of the axis B, relative to the longitudinal axis X, as permitted only by the rotation of the armrest 3 about the pivot A3, or, where appropriate, in combination with the rotation about the pivot a 8.

Advantageously, the absolute values of the maximum inclination value I3MAX and the minimum inclination value I3MIN are different.

For example, the maximum inclination value I3MAX may be +8 or +12, while the minimum inclination value I3MIN may be-15 or-18.

As can be seen in the central views of the exemplary embodiments of fig. 7 and 8, the position of the armrest 3 relative to the lower frame 21, which corresponds to a substantially zero inclination of the axis B relative to the longitudinal axis X, can be defined as the nominal position of the armrest 3.

According to one embodiment, the attachment plate 7 of the armrest 3 is integrally fixed to the lower frame 21 of the seat 1, the armrest 3 being connected to said attachment plate 7 by a connecting rod 8 having two longitudinal ends 81, 82.

It is advantageous that:

the connecting bar 8 can be connected at its first longitudinal end 81 to the attachment plate 7 so as to pivot about a pivot axis A8 substantially parallel to the pivot axis A3,

the connecting rod 8 can be connected at its second longitudinal end 82 to the armrest 3 so as to pivot about said pivot axis a3.

The armrest 3 may be configured to pivot relatively with respect to the connecting bar 8 about pivot A3, while the connecting bar 8 may be configured to pivot with respect to the attachment plate 7 about pivot A8, allowing:

adjusting the inclination of the armrest 3, and in particular of the axis B substantially tangent to the hand support S32 and to the elbow support S33, with respect to the longitudinal axis X, by the cumulative rotation of the armrest 3 with respect to the connecting rod 8 and of the connecting rod 8 with respect to the attachment plate 7 about the pivot axis A3 and the pivot axis A8, respectively, and

the position of the pivot A3 along the longitudinal axis X and the vertical axis Z is adjusted by the rotation of the connecting rod 8 with respect to the attachment plate 7 about the pivot A8.

Thanks to this advantageous arrangement of the invention, the movement of the armrest 3, and in particular of the axis B, with respect to the lower frame 2 corresponds to a combination of two rotations about two different axes parallel to each other, and according to the two different radii, this makes it possible to increase the amplitude of movement of the armrest 3 with respect to the lower frame 2 and to increase the number of positions of the axis B with respect to the lower frame.

This combined rotation can advantageously be carried out by the user of the vehicle seat 1 by means of a single action exerted on the armrest 3, causing said rotation of the armrest 3 relative to the connecting rod 8 about the pivot A3 and of the connecting rod 8 relative to the attachment plate 7 about the pivot A8, which simplifies the design and use of such a vehicle seat 1.

In particular, the amplitude of the variation of the position of axis B along the vertical axis Z of seat 1 may be greater than that allowed by the rotation of only armrest 3 with respect to lower frame 2 about pivot a3. This makes it possible to adapt the position of the armrest 3 relative to the lower frame 2 to more user sizes, in particular to small users (below 1.60m) or large users (above 1.90 m).

Advantageously, the amplitude of rotation of the connecting rod 8 with respect to the attachment plate 7 and the amplitude of rotation of the armrest 3 with respect to the connecting rod 8 may be arranged such that the armrest 3 may be in a so-called retracted position in which the armrest 3 is at least partially clear of a side edge BL of the seat portion 21 immediately adjacent to where the armrest 3 is located, so as not to impede the passage of a user at said side edge BL.

According to one embodiment, the locking system 5 is further configured for:

in the locked state, the connecting bar 8 is prevented from rotating about the pivot axis A8 relative to the lower frame 2 in addition to preventing the armrest 3 from rotating about the pivot axis A3 relative to the connecting bar 8,

in the unlocked state, the connecting rod 8 is allowed to rotate about the pivot A8 with respect to the lower frame, in addition to allowing the armrest 3 to rotate about the pivot A3 with respect to the connecting rod 8.

Advantageously, the locking system 5 can be configured to define a plurality of discrete or continuous locking positions of the armrest 3 corresponding to a value of inclination between the minimum value of inclination I3MIN and the maximum value of inclination I3MAX, and in particular to different inclinations of the axis B with respect to the longitudinal axis X and to different positions of the pivot axis A3 with respect to the pivot axis A8 along the vertical axis Z and along the longitudinal axis X. The inclination of the handrail 3, and in particular of the axis B, with respect to the longitudinal axis X may vary between two discrete, successive locking positions between a minimum inclination value I3MIN and a maximum inclination value I3MAX by less than 5 °, preferably less than 3 °, or more preferably less than 2 °, for example 1 °.

Thus, with such a locking system 5, the design and use of the vehicle seat 1 according to the invention is simplified, since the rotation of the armrest 3 relative to the connecting rod 8 about the pivot A3 and the rotation of the connecting rod 8 relative to the attachment plate 7 about the pivot A8 can be locked simultaneously and advantageously by a single movement of the user of the seat 1.

According to one embodiment, the vehicle seat 1 further comprises a coordination device 9 for coordinating the rotation of the armrest 3 relative to the connecting bar 8 about the pivot A3 and the rotation of the connecting bar 8 relative to the attachment plate 7 about the pivot A8.

Thus, thanks to the use of such a coordinating means 9, the rotary movement of the armrest 3 with respect to the connecting rod 8 about the pivot A8 and the rotary movement of the connecting rod 8 with respect to the attachment plate 7 about the pivot A3 are coordinated and advantageously even simultaneous, which simplifies the handling of the armrest 3 by the user and therefore the adjustment of the position of the armrest 3 with respect to the lower frame 2.

According to one embodiment, the coordination means 9 comprise:

a first toothed pinion 91 mounted so as to be rotatable with respect to the connecting rod 8 about said pivot axis A3 at the second longitudinal end 82 of the connecting rod 8 and driven in rotation about said pivot axis A3 by the handrail 3,

a toothed portion 92 fixed with respect to the attachment plate 7 and having a plurality of teeth extending along a portion of a circle centred on said pivot axis A8 of the connecting bar 8 with respect to the attachment plate 7,

a second toothed pinion 93 mounted on the connecting rod 8 to pivot about a pivot axis a93 substantially parallel to the pivot axis A3 and to the pivot axis A8 and interposed between the first toothed pinion 91 and the toothed portion 92.

Advantageously, the second pinion 93 can mesh simultaneously with the first toothed pinion 91 and with the toothed portion 92.

As can be seen in the exemplary embodiment of fig. 4 to 6, the first toothed pinion 91 may be fixedly secured relative to the armrest 3. It may even be made as a single part with the armrest 3.

The toothed portion 92 may also advantageously be arranged in a single piece with the attachment plate 7.

This simple design of the coordination means 9 thus allows the simultaneous and in the same direction (positive or negative, as defined above) pivoting of the armrest 3 relative to the connecting bar 8 about the pivot axis A3 and of the connecting bar 8 relative to the attachment plate 7 about the pivot axis A8, which also facilitates the user in manipulating the armrest 3 so as to position it in a desired position relative to the lower frame 21.

Furthermore, in the alternative case in which the reduction ratio between the first toothed pinion 91 and the second pinion 93 and between the second pinion 93 and the toothed portion 92 is 1:1, the variation of the inclination of the armrest 3 about the pivot axis A3 with respect to the longitudinal axis X and the variation of the inclination of the connecting rod 8 about the pivot axis A8 with respect to the longitudinal axis X may be the same during their pivoting movement.

Alternatively, a reduction ratio different from 1:1 may be provided between the first pinion 91 and the second pinion 93 or between the second pinion 93 and the toothed portion 92 without departing from the scope of the present invention.

According to one embodiment, the locking system 5 comprises a locking bar 51 having a first longitudinal end 52 and a second longitudinal end 53, with a locking lug 54 configured for:

in the locked condition, interposed between two consecutive teeth of the first toothed pinion 91 to prevent the first toothed pinion 91 from rotating about the pivot axis a3 with respect to the connecting rod 8, an

In the unlocked condition, spaced from the teeth of the first toothed pinion 91, allowing the first toothed pinion 91 to rotate about the pivot a3 with respect to the connecting rod 8.

Advantageously, the locking lever 51 is integrally fixed to the armrest 3, movably mounted sliding with respect to the armrest 3 along the axis a51, so as to be able to pass from its locking state to its unlocking state.

As can be seen in the exemplary embodiment of fig. 4 to 6, the control device 6 may be arranged to cause the locking lever 51 to slide along said axis a51 relative to the armrest 3.

Such a locking system 5 is of simple and more compact design and can advantageously be actuated manually by the user by means of the control device 6.

As can be seen in the exemplary embodiment of fig. 4 to 6, the control device 6 may comprise a handle 61, for example connected at its first longitudinal end 52 to the locking lever 51.

For example, the handle 61 may be hinged to the armrest 3 so as to pivot about a substantially transverse pivot axis, and to the locking lever 51 so as to also pivot about a substantially transverse pivot axis.

Additionally or alternatively, the handle 6 may be arranged to slide along a sliding axis, in particular parallel to axis a51, with respect to the armrest 3.

An electric actuator may also be provided to slide the locking lever 51 along the axis a51 with respect to the armrest 3.

A return means (not shown) may be provided which is configured to hold the locking lever 51 and/or the control means 6 in a position in the locked state of the locking system 5.

The locking lug 54 may advantageously be provided as a one-piece component with the locking lever 51. Locking lever 51 may also be substantially straight to facilitate its manufacture and minimize its size.

According to one embodiment, the connecting rod 8 has, at its second longitudinal end 82, a toothed portion 83, the toothed portion 83 having a plurality of teeth extending along a portion of a circle centred on said pivot axis A3 of the handrail 3 with respect to the connecting rod 8 and configured to receive said locking lug 54 interposed between two consecutive teeth of the first toothed pinion 91, when said locking lug 54 is interposed between two consecutive teeth, so as to prevent the handrail 3 from rotating about the pivot axis A3 with respect to the connecting rod 8.

Advantageously, as can be seen in the exemplary embodiment of fig. 4 and 5, the diameters and teeth of the first toothed pinion 91 and of the toothed portion 83 may be identical.

Due to this advantageous arrangement of the invention, in said locked state of the locking system 5, the locking lever 51 simultaneously prevents the rotation of the first toothed pinion 91 relative to the connecting rod 8 about the pivot A3, the rotation of the second toothed pinion 93 relative to the connecting rod 8 about the pivot a93, and the rotation of the connecting rod 8 relative to the attachment plate 7 about the pivot A8.

Advantageously, the toothed portion 83 may be arranged integral with the connecting rod 8.

According to one embodiment, the control means 6 is arranged at the level of the lower surface FI32 of the hand support S32 and is configured such that when the palm of the hand is located on the upper surface FS32 of the hand support S32, and for example on the support surface M32, the user of the chair 1 can manually actuate the control means 6 using at least one finger.

This advantageous arrangement of the invention improves the ergonomics of the armrest 3 of the vehicle seat 1 according to the invention, since the user can reach and thus easily manoeuvre the control device 6 with his or her arm in a position on the armrest, extending substantially along said axis B, the user 'S hand, and in particular the palm, resting on the hand support S32, in particular on the upper surface FS32 of the hand support S32, for example on the support surface M32, and at least a part of the user' S elbow and possibly the forearm resting on the elbow support S33, for example on the support surface C33.

Furthermore, by positioning the control device 6 in this way, the device does not interfere with the placement of the user' S hand, in particular the palm of the hand, on the hand support S32, which is intended to rest on said upper surface FS32 of the hand support S32.

This may also reduce the risk of the user undesirably actuating the control means 6, since such a position of the devices requires a voluntary movement of the user to actuate them.

In particular, the control device 6 and the locking system 5 can indeed be configured such that the user can drive the locking system 5 from its locked state to its unlocked state with little effort.

According to one embodiment, the locking lever 51 is arranged at the height of the side arm 32 of the armrest 3, so that the axis a51 of translation of the locking lever with respect to the armrest is substantially parallel to the direction of extension of said side arm 32.

This advantageous arrangement of the invention makes it possible to reduce the footprint of the locking system 5, since, as can be seen in the exemplary embodiments of fig. 1, 2 and 4 to 6, said locking lever 51 does not extend outside the armrest 3, and in particular outside the front side arm 32.

In particular, as seen in the exemplary embodiment of fig. 4 to 6, the locking lever 51 may be arranged at the height of the front side arm 32 of the armrest 3, receiving the control device 6.

According to one embodiment, the receiving portion 31 is configured to receive a human-machine interface HMI or a device for connecting to an electronic apparatus, the receiving portion 31 being arranged at the longitudinal upper end E32 of the front side arm 32 of the armrest 3, in front of the hand support S32.

This advantageous arrangement of the invention allows the user to have access to said receptacle 31, for example so as to interact with said human-machine interface HMI when said hand, and in particular the palm, rests on said hand support S32, for example on a support surface M32, using his or her hand, and also when a portion of his or her elbow and/or his or her forearm rests on the elbow support S33, for example on a support surface C33, the forearm being oriented substantially along said axis B, allowing the user to maintain a desired position, in particular a comfortable position, of the arm, which also improves the ergonomics of the armrest 3 of the vehicle seat 1 according to the invention.

As seen in the exemplary embodiments of fig. 1 and 2, the human-machine interface HMI may comprise one or more knobs for controlling the vehicle, for example knobs for controlling an on-board computer of the vehicle.

The electronic connection device may, for example, be configured to connect to a mobile telephone. Advantageously, the receiving portion 31 may further comprise support means for the electronic device configured to ensure that the electronic device is held in place on the receiving portion 31.

To further improve the ergonomics of the armrest 3 and to facilitate the user' S interaction with the human-machine interface HMI, it can be arranged, as can be seen in the exemplary embodiment of fig. 1 and 2, that said receptacle 31 is located along the vertical axis Z of the vehicle seat 1 below the hand support S32, and in particular below the upper surface FS32 and the lower surface FI32.

According to one embodiment, the armrest 3 is fixed to a side edge BL of the seat part 21 of the lower frame 2.

Alternatively, and without departing from the scope of the invention, the armrest 3 may be fixed at the height of the slider 22 of the lower frame 2.

In the present application, according to a first aspect, a vehicle seat 1 has been described having an armrest 3, the armrest 3 having two side arms 32, 33 connected together by a central portion 34, each side arm having a hand support S32 and an elbow support S33, respectively, intended to provide discrete support for a user' S forearms on the armrest 3.

According to a second aspect, a vehicle seat 1 is also described, having an attachment plate 7 cooperating with a connecting rod 8 to ensure that the armrest 3 is attached to the lower frame 2 of the seat 1 along two pivot axes A3, A8 substantially parallel to each other, in order to increase the number of possible positions of the occupant of the armrest 3 relative to the lower frame 2 of the seat 1.

Both aspects of the vehicle seat 1 have been described in connection with.

However, it is envisaged that the second aspect is completely independent of the first aspect. Accordingly, the present disclosure also relates to a vehicle seat 1 comprising:

a lower frame 2, configured to be connected to the floor of the vehicle, having a seat portion 21, the front edge AV and the rear edge AR of which seat portion 21 are connected to each other by two side edges BL, two slides 22 each arranged at each side of the lower frame 2 along the transverse axis Y of the seat 1 and respectively extending along the longitudinal axis X of the seat 1; and a lower structure 23 connecting the slide 22 to the seat part 21,

an armrest 3 having an armrest support surface on which the forearm of a user is intended, in particular, to extend along an axis B substantially tangential to said support surface of the armrest 3 when the forearm is received;

and wherein the attachment plate 7 of the armrest 3 is integrally fixed to the lower frame 2 of the seat 1, the armrest 3 being connected to said attachment plate 7 by a connecting rod 8 having two longitudinal ends 81, 82, and wherein:

the connecting rod 8 is connected at its second longitudinal end 82 to the armrest 3 so as to pivot about a pivot axis a3 substantially parallel to the transverse axis Y of the seat 1.

The connecting bar 8 is connected at its first longitudinal end 81 to the attachment plate 7 so as to pivot about a pivot A8 substantially parallel to the pivot A3, the armrest 3 being configured to pivot relatively with respect to the connecting bar 8 about the pivot A3, and the connecting bar 8 being configured to pivot with respect to the attachment plate 7 about the pivot A8, allowing:

adjusting the armrest 3 by cumulative rotation of the armrest 3 relative to the connecting rod 8 and relative to the attachment plate 7 about the pivot axis A3 and the pivot axis A8, respectively, and in particular the inclination of the axis B relative to the longitudinal axis X within an angular amplitude defined between a minimum inclination value I3MIN at which the armrest 3 is inclined towards the rear edge AR of the seat portion 21 of the lower frame 2 and a maximum inclination value I3MAX at which the armrest 3 is inclined towards the front edge AV of the seat portion 21, and

adjusting the position of the pivot a31 along the longitudinal axis X and the vertical axis Z by rotation of the connecting rod 8 relative to the attachment plate 7 about the pivot A8,

wherein the seat 1 comprises a locking system 5, the locking system 5 being configured to be able to change from a locked state to an unlocked state:

a locked state, ensuring that the armrest 3, and in particular the relative inclination I3 between axis B and axis X, is locked, including preventing the armrest 3 from rotating about pivot A3 with respect to the lower frame 2 and the connecting rod 8 from rotating about pivot a8 with respect to the lower frame 2,

an unlocked condition allowing adjustment of the armrest 3, and in particular of the relative inclination between the axis B and the longitudinal axis X, upon release of the rotation of the armrest 3 with respect to the lower frame 2 about the pivot axis A3 and of the connecting rod 8 with respect to the lower frame 2 about the pivot axis A8, the locking system 5 being actuated by the control device 6 so as to pass from its locked condition to its unlocked condition, and the locking system 5 being configured so as to define a plurality of discrete or continuous locking positions corresponding to different inclinations of the axis B with respect to the longitudinal axis X between the minimum inclination value I3MIN and the maximum inclination value I3MAX, and to different positions of the pivot axis A3 with respect to the pivot axis A8 along the vertical axis Z and along the longitudinal axis X.

Such a vehicle seat 1 may also have the following features, used individually or in combination:

-a minimum inclination value I3MIN between-30 ° and-10 °;

-the maximum inclination value I3MAX is between +10 ° and +30 °;

the vehicle seat 1 further comprises a coordinating means 9 for coordinating the rotation of the armrest 3 relative to the connecting bar 8 about the pivot A3 and the rotation of the connecting bar 8 relative to the attachment plate 7 about the pivot A8;

said coordinating means 9 comprise:

a first toothed pinion 91 mounted to be rotatable relative to the connecting rod 8 about said pivot axis A3 at the second longitudinal end 82 of the connecting rod 8 and driven by the handrail 3 to rotate about said pivot axis A3,

a toothed portion 92 fixed with respect to the attachment plate 7 and having a plurality of teeth extending along a portion of a circle centred on said pivot axis A8 of the connecting rod 8 with respect to the attachment plate 7.

A second toothed pinion 93 mounted on the connecting rod 8 so as to pivot about a pivot axis a93 substantially parallel to the pivot axis A3 and to the pivot axis A8 and interposed between the first toothed pinion 91 and the toothed portion 92, the second toothed pinion 93 meshing simultaneously with the first toothed pinion 91 and with the toothed portion 92.

The locking system 5 comprises a locking bar 51 having a first longitudinal end 52 and a second longitudinal end 53, having a locking lug 54 configured to:

in the locked condition, interposed between two consecutive teeth of the first toothed pinion 91 to prevent the first toothed pinion 91 from rotating about the pivot axis a3 with respect to the connecting rod 8, an

In the unlocked condition, at a distance from the teeth of the first toothed pinion 91 to allow the first toothed pinion 91 to rotate about the pivot A3 with respect to the connecting rod 8, the locking lever 51 being integrally fixed to the armrest 3, movably mounted slidable with respect to the armrest 3 along the axis a51, so as to be able to pass from its locked condition to the unlocked condition.

The connecting rod 8 has, at its second longitudinal end 82, a toothed portion 83, the toothed portion 83 having a plurality of teeth extending along a portion of a circle centred on the handrail 3 with respect to said pivot axis A3 of the connecting rod 8 and configured to receive said locking lug 54 inserted between two consecutive teeth of the first toothed pinion 91 when said locking lug 54 is inserted between said two consecutive teeth, so as to prevent the handrail 3 from rotating about the pivot axis A3 with respect to the connecting rod 8.

The control means 6 are arranged at the level of the lower surface FI32 of the hand support S32 and are configured such that when the palms of the hands are placed on the upper surface FS32 of the hand support S32, they can be actuated manually by the user of the chair 1 with at least one finger;

the locking lever 51 is arranged at the height of the side arm (32) of the armrest 3, so that the axis a51 of translation of the locking lever 51 with respect to the armrest 3 is substantially parallel to the direction of extension of said side arm 32;

the armrests 3 are fixed to the side edges BL of the seat portion 21 of the lower frame 2.

Naturally, other embodiments will occur to those skilled in the art without departing from the scope of the invention as defined by the appended claims.

List of reference numerals

1. Vehicle seat

2. Lower frame

21. Seat part

AV. front edge

Rear edge of AR

BL. side edge

22. Sliding member

23. Substructure

3. Armrest

A3. Pivot shaft

I3. Gradient of inclination

31. Receiving part

32. Front arm

E32. Longitudinal upper end

S32 hand support

FI32 lower surface

FS32 upper surface

33. Rear side arm

E33. Longitudinal upper end

S33 elbow support

34. Center part

35. Free space of 36

HMI human machine interface

B. Axial line

4. Back support

5. Locking system

51. Locking rod

A51. Axial line

52. First longitudinal end

53. Second longitudinal end

54. Locking lug

6. Control device

61. Handle (CN)

7. Attachment plate

8. Connecting rod

81. First longitudinal end

82. Second longitudinal end

83. Toothed part

9. Coordination device

91. First toothed pinion

92. Toothed part

93. Second toothed pinion

A93. Pivot shaft

X. longitudinal axis

Y, cross axis

Z. vertical axis

Claims (16)

1. Vehicle seat (1) comprising:

-a lower frame (2) configured to be connected to the floor of a vehicle, said lower frame (2) having a seat portion (21), two slides (22) and a lower structure (23), the front edge (AV) and the rear edge (AR) of said seat portion (21) being connected to each other by two side edges (BL); each slide being arranged at each side of the lower frame (2) along a transverse axis (Y) of the seat (1) and each slide extending along a longitudinal axis (X) of the seat (1); and the lower structure (23) connects the slider (22) to the seat part (21),

-a handrail (3),

characterized in that the armrest (3) has at least two side arms (32, 33): a front side arm (32) and a rear side arm (33), the front side arm (32) and the rear side arm (33) being connected to each other by a central portion (34),

and wherein the armrest (3) is fixed to the lower frame (2) at least at its central portion (34) so as to pivot about a pivot axis (A3) parallel to the transverse axis (Y) of the seat (1),

and wherein each side arm (32, 33) has a longitudinal upper end (E32, E33), each longitudinal upper end receiving a support element for the user ' S arm, the support element of the front side arm being referred to as a hand support (S32), the hand support being configured to at least partially receive the user ' S hand, and the support element of the rear side arm being referred to as an elbow support (S33), the elbow supports being configured to each at least partially receive the user ' S elbow and possibly forearm,

and wherein, when the forearm of a user is received onto the hand support (S32) and elbow support (S33) of the armrest (3), the forearm of the user is intended to extend along an axis (B) tangential to the hand support (S32) and elbow support (S33), the armrest (3) being configured to pivot at least partially about a pivot axis (A3) with respect to the lower frame (2) so that axis (B) can be relatively tilted with respect to the longitudinal axis (X) of the seat (1).

2. Vehicle seat (1) according to claim 1, characterized in that the armrest (3) has a substantially U-or V-shape and the longitudinal upper end (E32, E33) of each side arm (32, 33) is positioned above the central portion (34) of the armrest (3) along a vertical axis (Z) of the seat (1).

3. Vehicle seat (1) according to claim 1 or 2, characterized in that the armrest (3) is configured such that there is a free space (36) between the hand support (S32) and the elbow support (S33) along an axis (B) tangent to the hand support (S32) and elbow support (S33) of the armrest (3).

4. The vehicle seat (1) according to claim 1, characterized in that the armrest (3) is configured to pivot at least partially about a pivot axis (A3) relative to the lower frame (2) such that an axis (B) can be tilted relative to the longitudinal axis (X) of the seat (1) within an angular amplitude defined between a minimum tilt value (I3MIN), at which the armrest (3) is tilted towards the rear edge (AR) of the seat portion (21) of the lower frame (2), and a maximum tilt value (I3MAX), at which the armrest (3) is tilted towards the front edge (AV) of the seat portion (21),

and wherein the seat (1) comprises a locking system (5) configured to be able to change from a locked state to an unlocked state:

-said locked state, ensuring the locking of the relative inclination (I3) between axis (B) and longitudinal axis (X), including preventing the rotation of the armrest (3) relative to the lower frame (2) about a pivot (A3),

-said unlocked state allowing to adjust the relative inclination between axis (B) and longitudinal axis (X) upon releasing the rotation of armrest (3) with respect to lower frame (2) about pivot (A3),

said locking system (5) being actuated by control means (6) so as to pass from its locking state to its unlocking state,

and wherein the locking system (5) is configured to define a plurality of discrete or continuous locking positions corresponding to different inclinations (I3) of the axis (B) between a minimum inclination value (I3MIN) and a maximum inclination value (I3MAX) with respect to the longitudinal axis (X).

5. The vehicle seat (1) according to claim 4, characterized in that the minimum inclination value (I3MIN) is between-30 ° and-10 °.

6. Vehicle seat (1) according to claim 4, characterized in that said maximum inclination value (I3MAX) is comprised between +10 ° and +30 °.

7. The vehicle seat (1) according to claim 4, characterized in that the vehicle seat (1) further comprises an attachment plate (7) of the armrest (3), the attachment plate (7) being integrally fixed to the lower frame (2) of the seat (1), the armrest (3) being connected to the attachment plate (7) by a connecting rod (8) having two longitudinal ends (81, 82),

and wherein:

-a connecting rod (8) is connected at its first longitudinal end (81) to the attachment plate (7) so as to pivot about a pivot axis (A8) parallel to the pivot axis (A3),

-the connecting rod (8) is connected at its second longitudinal end (82) to the armrest (3) so as to pivot about the pivot axis (A3),

the armrest (3) is configured to pivot relatively with respect to the connecting bar (8) about a pivot (A3), while the connecting bar (8) is configured to pivot with respect to the attachment plate (7) about a pivot (A8), so as to allow:

-adjusting the inclination of an axis (B) tangential to the hand support (S32) and elbow support (S33) with respect to the longitudinal axis (X) by cumulative rotations of the armrest (3) with respect to the connecting rod (8) and of the connecting rod (8) with respect to the attachment plate (7) about a pivot (A3) and a pivot (A8), respectively, and

-adjusting the position of pivot (A3) along the longitudinal axis (X) and vertical axis (Z) by rotation of the connecting rod (8) relative to the attachment plate (7) about pivot (A8).

8. The vehicle seat (1) according to claim 7, characterized in that the locking system (5) is further configured to:

-in the locked state, in addition to preventing the armrest (3) from rotating about a pivot (A3) relative to the connecting rod (8), also preventing the connecting rod (8) from rotating about a pivot (A8) relative to the lower frame (2),

-in the unlocked state, in addition to allowing the armrest (3) to rotate about a pivot (A3) with respect to the connecting rod (8), also allowing the rotation of the connecting rod (8) about a pivot (A8) with respect to the lower frame (2),

and wherein the locking system (5) is configured to define a plurality of discrete or continuous locking positions corresponding to different inclinations of the axis (B) with respect to the longitudinal axis (X) between the minimum inclination value (I3MIN) and the maximum inclination value (I3MAX), and to different positions of the pivot (A3) with respect to the pivot (A8) along the vertical axis (Z) and along the longitudinal axis (X).

9. Vehicle seat (1) according to claim 7, characterized in that it further comprises means (9) for coordinating the rotation of the armrest (3) with respect to the connecting rod (8) about a pivot (A3) and the rotation of the connecting rod (8) with respect to the attachment plate (7) about a pivot (A8).

10. The vehicle seat (1) according to claim 9, characterized in that the coordination device (9) comprises:

-a first toothed pinion (91) mounted rotatable relative to the connecting rod (8) about the pivot axis (A3) at the second longitudinal end (82) of the connecting rod (8) and driven by the handrail (3) to rotate about the pivot axis (A3),

-a toothed portion (92) fixed with respect to the attachment plate (7) and having a plurality of teeth extending along a portion of a circle centred on the pivot axis (A8) of the connecting rod (8) with respect to the attachment plate (7),

-a second toothed pinion (93) mounted on the connecting rod (8) so as to pivot about a pivot axis (A93) parallel to pivot axis (A3) and pivot axis (A8) and interposed between the first toothed pinion (91) and the toothed portion (92),

and wherein the second toothed pinion (93) meshes simultaneously with the first toothed pinion (91) and with the toothed portion (92).

11. The vehicle seat (1) according to claim 10, characterized in that the locking system (5) comprises a locking lever (51) having a first longitudinal end (52) and a second longitudinal end (53), having a locking lug (54) configured for:

-in the locked condition, interposed between two consecutive teeth of the first toothed pinion (91) to prevent the first toothed pinion (91) from rotating about a pivot (a3) with respect to the connecting rod (8); and

-in the unlocked state, at a distance from the teeth of the first toothed pinion (91) so as to allow the first toothed pinion (91) to rotate about a pivot (A3) with respect to the connecting rod (8),

and wherein the locking lever (51) is integrally fixed to the armrest (3), movably mounted to slide along an axis (A51) with respect to the armrest (3) so as to be able to pass from its locking state to its unlocking state.

12. Vehicle seat (1) according to claim 11, characterized in that said connecting rod (8) has, at its second longitudinal end (82), a toothed portion (83), said toothed portion (83) having a plurality of teeth extending along a portion of a circle centred on said armrest (3) with respect to said pivot axis (A3) of said connecting rod (8), and being configured to receive said locking lug (54) inserted between two consecutive teeth of said first toothed pinion (91) when said locking lug (54) is inserted between two consecutive teeth, so as to prevent rotation of said armrest (3) with respect to said connecting rod (8) about a pivot axis (A3).

13. Vehicle seat (1) according to claim 4, characterized in that the control device (6) is arranged at the level of the lower surface (FI32) of the hand support (S32) and is configured such that the user of the seat (1) can manually operate the control device (6) with at least one finger when the palm of the hand is located on the upper surface (FS32) of the hand support (S32).

14. Vehicle seat (1) according to claim 11, characterized in that the locking lever (51) is arranged at the height of a side arm (32) of the armrest (3) such that the axis of translation (a51) of the locking lever (51) relative to the armrest (3) is parallel to the direction of extension of the side arm (32).

15. Vehicle seat (1) according to claim 1, characterized in that a receiving portion (31) is configured to receive a Human Machine Interface (HMI) or a device for connecting to an electronic apparatus, the receiving portion (31) being arranged at the longitudinal upper end (E32) of a front side arm (32) of the armrest (3), in front of the hand support (S32).

16. The vehicle seat (1) according to claim 1, characterized in that the armrest (3) is fixed to a side edge (BL) of the seat portion (21) of the lower frame (2).

Images