DE102021113118A1 - Slide rail for vehicle seat - Google Patents

Abstract

Slide rail (1) for a vehicle seat (S), comprising: - a lower profile (2) intended to be fixed to the floor (P) of a vehicle, - an upper profile (3) which, in relation to the lower profile (2) is slidably mounted along a longitudinal axis (X1), - a first drive means (4) configured to drive the displacement of the upper profile (3) with respect to the lower profile (2) along the longitudinal axis (X1), - a second drive means (5) configured to drive the displacement of the upper profile (3) with respect to the lower profile (2) along the longitudinal axis (X1) alternately or simultaneously with the first drive means (4).

Description

Technical area

The present invention relates to a slide rail for a vehicle seat.

The present invention also relates to a unit comprising two slide rails.

The present invention further relates to a method for moving the upper profile with respect to the lower profile of a slide rail.

The present invention finally relates to a vehicle seat which comprises a slide rail or a unit.

State of the art

A vehicle seat is generally equipped with a slide rail, or even two slide rails, in order to enable a translational displacement of the seat in relation to the floor of the vehicle in a substantially elongated direction of the seat.

• - ein unteres Profil, das dazu bestimmt ist, am Boden eines Fahrzeugs befestigt zu werden,
• - ein oberes Profil, das in Bezug auf das untere Profil entlang einer Längsachse gleitend montiert ist.

In a well known manner, a slide rail includes:

• - a lower profile designed to be fixed to the floor of a vehicle,
• an upper profile mounted to slide with respect to the lower profile along a longitudinal axis.

The translational displacement of the seat in relation to the floor of the vehicle by means of the slide rail can be driven by a user, and in particular the occupant of the seat, by hand or, in order to improve the comfort of such a user, by means of a drive means that generally comprises an electric motor.

The slide rail and the drive means are generally configured to drive the translational displacement of the seat with respect to the floor of the vehicle at a reduced speed, for example less than 50 mm / s, for example on the order of 20 mm / s, to the To ensure stability of the occupant of the seat during the translational displacement of the seat in relation to the floor of the vehicle. Such a reduced displacement speed is generally used when the occupant of the seat wishes to adjust the position of the seat in relation to the floor of the vehicle in the longitudinal direction, in particular in order to position it in a position which maximizes his comfort.

For certain applications, for which a rapid translational displacement of the seat in relation to the floor of the vehicle is required, it may be advantageous to displace the seat in relation to the floor of the vehicle at a higher speed, e.g. greater than 75 mm / s, for example to be able to drive in the order of 80 mm / s.

According to the inventor's findings, this is particularly the case with seats with which autonomous vehicles are equipped. This is because such vehicles are intended to be controlled without intervention by a user of the vehicle. Despite everything, these vehicles are generally equipped with a driver's cab with means for controlling the vehicle, such as a steering wheel and gas and brake pedals, in order to enable a user to take control of the vehicle again, especially in the event of an unforeseen situation, or in the event of a malfunction in the vehicle's automatic control system.

Thus, when an autonomous vehicle is in an autonomous driving mode (e.g. automatic control without user intervention), the user in the vicinity of the driver's cab, since he does not have to operate the control means, may wish to bring his seat into a configuration that maximizes its comfort. In such a configuration, in particular, the seat may have been translationally displaced with respect to the floor of the vehicle via slide rails in order to move away from the driver's cab in order to maximize the clearance in front of the seat for the legs of the occupant of the seat.

In order to enable the occupant of this seat to access the control means of the vehicle's driver's cab, the seat must be brought closer to the driver's cab by translating it in relation to the floor of the vehicle using the slide rail, and this because it is can act as an emergency in a rapid manner.

However, the drive means provided on such a slide rail is generally not designed to achieve a speed of more than 50 mm / s, or with a significant deterioration in the quality perceived by the user, due to the strong noise development and the vibrations that result from an increased rotational speed of the motor.

Technical problem

The aim of the invention is therefore to compensate for the disadvantages of the slide rails for a vehicle seat according to the prior art by a Slide rail for a vehicle seat, and in particular for an autonomous vehicle, is offered, which makes it possible to carry out a translational displacement of the seat in relation to the floor of the vehicle at an increased speed, e.g. higher than 75 mm / s, without being carried out by the occupant of the seat of the vehicle (or by the other vehicle occupants) perceived quality.

Another aim of the present invention is to offer such a slide rail for a vehicle seat in a simple design and at a low cost price.

Presentation of the invention

• - ein unteres Profil, das dazu bestimmt ist, am Boden eines Fahrzeugs befestigt zu werden,
• - ein oberes Profil, das in Bezug auf das untere Profil entlang einer Längsachse gleitend montiert ist,
• - ein erstes Antriebsmittel, das konfiguriert ist, um die Verschiebung des oberen Profils in Bezug auf das untere Profil entlang der Längsachse anzutreiben.

A slide rail for a vehicle seat is offered that includes:

• - a lower profile designed to be fixed to the floor of a vehicle,
• - an upper profile slidably mounted with respect to the lower profile along a longitudinal axis,
• a first drive means configured to drive the displacement of the upper profile with respect to the lower profile along the longitudinal axis.

According to the invention, the slide rail also comprises a second drive means which is configured to drive the displacement of the upper profile with respect to the lower profile along the longitudinal axis alternately or simultaneously with the first drive means.

• -umfasst das erste Antriebsmittel einen ersten Elektromotor, der an eine Einheit Schnecke/Mutter mit einer Endlosschnecke und einer Mutter angeschlossen ist, die die Schnecke innen aufnimmt, und derart konfiguriert ist, dass:
  • -- der erste Elektromotor gemäß einer ersten Alternative die Drehung der Schnecke derart antreibt, um deren translatorische Verschiebung in Bezug auf die Schnecke entlang der Längsachse anzutreiben,
  • -- der erste Elektromotor gemäß einer zweiten Alternative die Drehung der Schnecke derart antreibt, um deren translatorische Verschiebung in Bezug auf die Mutter entlang der Längsachse anzutreiben;
• - ist der erste Elektromotor mit dem oberen Profil verbunden, und:
  • -- die Mutter gemäß der ersten Alternative mit dem oberen Profil verbunden ist, und die Schnecke fest mit dem unteren Profil verbunden ist,
  • -- die Schnecke gemäß der zweiten Alternative mit dem oberen Profil verbunden ist und die Mutter fest mit dem unteren Profil verbunden ist;
• - ist der erste Motor entlang der Längsrichtung der Gleitschiene, im Wesentlichen in der Mitte des oberen Profils positioniert;
• - ist der erste Motor entlang der Längsrichtung der Gleitschiene im Bereich eines der beiden Längsenden des oberen Profils positioniert;
• - ist der erste Motor entlang der Längsrichtung der Gleitschiene im Bereich eines ersten Längsendes des oberen Profils positioniert, und wobei ein erstes Führungslager, das konfiguriert ist, um die Endlosschnecke innen aufzunehmen, entlang der Längsrichtung der Gleitschiene, im Bereich des zweiten Längsendes des oberen Profils positioniert ist;
• - umfasst das zweite Antriebsmittel einen zweiten Elektromotor, der an die Einheit Schnecke/Mutter angeschlossen ist, und derart konfiguriert ist, dass:
  • -- der zweite Elektromotor gemäß der ersten Alternative die Drehung der Schnecke derart antreibt, um deren translatorische Verschiebung in Bezug auf die Mutter gemäß der Längsachse anzutreiben,
  • -- der zweite Elektromotor gemäß der zweiten Alternative die Drehung der Mutter derart antreibt, um deren translatorische Verschiebung in Bezug auf die Schnecke entlang der Längsachse anzutreiben;
• - der zweite Elektromotor mit dem unteren Profil verbunden ist;
• - der zweite Elektromotor entlang der Längsrichtung der Gleitschiene, im Bereich eines der beiden Längsenden des unteren Profils positioniert ist;
• - der zweite Elektromotor entlang der Längsrichtung der Gleitschiene, im Bereich eines ersten Längsendes des unteren Profils positioniert ist, und wobei ein zweites Führungslager, das konfiguriert ist, um innen die Endlosschnecke der Einheit Schnecke/Mutter aufzunehmen, entlang der Längsrichtung der Gleitschiene, im Bereich des zweiten Längsendes des unteren Profils positioniert ist.

According to optional features of the invention, taken alone or in combination:

• -the first drive means comprises a first electric motor connected to a screw / nut unit with an endless screw and a nut which houses the screw inside and is configured in such a way that:
  • - According to a first alternative, the first electric motor drives the rotation of the screw in such a way as to drive its translational displacement with respect to the screw along the longitudinal axis,
  • the first electric motor, according to a second alternative, drives the rotation of the worm in such a way as to drive its translational displacement with respect to the nut along the longitudinal axis;
• - the first electric motor is connected to the upper profile, and:
  • - the nut according to the first alternative is connected to the upper profile, and the worm is firmly connected to the lower profile,
  • - According to the second alternative, the worm is connected to the upper profile and the nut is firmly connected to the lower profile;
• the first motor is positioned along the longitudinal direction of the slide, substantially in the middle of the upper profile;
• the first motor is positioned along the longitudinal direction of the slide rail in the region of one of the two longitudinal ends of the upper profile;
• the first motor is positioned along the longitudinal direction of the slide rail in the region of a first longitudinal end of the upper profile, and wherein a first guide bearing, which is configured to receive the endless worm internally, along the longitudinal direction of the slide rail, in the region of the second longitudinal end of the upper profile is positioned;
• - the second drive means comprises a second electric motor connected to the screw / nut unit and configured in such a way that:
  • - the second electric motor according to the first alternative drives the rotation of the worm in such a way as to drive its translational displacement with respect to the nut according to the longitudinal axis,
  • the second electric motor according to the second alternative drives the rotation of the nut in such a way as to drive its translational displacement with respect to the worm along the longitudinal axis;
• - the second electric motor is connected to the lower profile;
• the second electric motor is positioned along the longitudinal direction of the slide rail in the region of one of the two longitudinal ends of the lower profile;
• the second electric motor is positioned along the longitudinal direction of the slide rail, in the region of a first longitudinal end of the lower profile, and wherein a second guide bearing, which is configured to internally receive the endless worm of the screw / nut unit, along the longitudinal direction of the slide rail, in the region of the second longitudinal end of the lower profile is positioned.

The invention also relates to a unit comprising two slide rails according to one of the modes of application of the invention, the lower profile of the first slide rail being substantially parallel to the is arranged lower profile of the second slide rail.

According to one mode of application, the first drive means of the first slide rail is the same as the first drive means of the second slide rail.

According to one mode of application, the second drive means of the first slide rail is the same as the second drive means of the second slide rail.

• Antrieb der Verschiebung des oberen Profils in Bezug auf das untere Profil gemäß der Längsachse der Gleitschiene mit einer ersten Geschwindigkeit, nur anhand des ersten Antriebsmittels, oder
• Antrieb der Verschiebung des oberen Profils in Bezug auf das untere Profil gemäß der Längsachse der Gleitschiene mit einer zweiten Geschwindigkeit, nur anhand des zweiten Antriebsmittels, oder
• Antrieb der Verschiebung des oberen Profils in Bezug auf das untere Profil gemäß der Längsachse der Gleitschiene mit einer dritten Geschwindigkeit, gleichzeitig anhand des ersten Antriebsmittels und des zweiten Antriebsmittels.

The invention further relates to a method for moving the upper profile with respect to the lower profile along the longitudinal axis of a slide rail according to one of the application modes of the invention, comprising the following steps:

• Driving the displacement of the upper profile with respect to the lower profile according to the longitudinal axis of the slide rail at a first speed, only by means of the first drive means, or
• Driving the displacement of the upper profile with respect to the lower profile according to the longitudinal axis of the slide rail at a second speed, only by means of the second drive means, or
• Driving the displacement of the upper profile with respect to the lower profile according to the longitudinal axis of the slide rail at a third speed, simultaneously by means of the first drive means and the second drive means.

The invention finally relates to a vehicle seat which comprises a slide rail according to one of the application modes of the invention or a unit according to one of the application modes of the invention.

Figure list

• 1 [1] eine schematische Draufsicht einer Einheit zeigt, die zwei Gleitschienen gemäß einem ersten Anwendungsmodus gemäß der Erfindung umfasst.
• 2 [2] eine Schnittansicht entlang der Linie II-II der 1 der Einheit der 1 zeigt.
• 3 [3] eine vergrößerte Detailansicht der 2 zeigt.
• 4 [4] eine perspektivische Ansicht einer Einheit zeigt, die zwei Gleitschienen gemäß einem zweiten Anwendungsmodus gemäß der Erfindung umfasst, wobei das zweite Antriebsmittel nicht dargestellt ist.
• 5 [5] eine Detailschnittansicht entlang der Linie V-V der 4 der Einheit der 4 zeigt.
• 6 [6] eine perspektivische Ansicht einer Einheit zeigt, die zwei Gleitschienen gemäß einem dritten Anwendungsmodus gemäß der Erfindung umfasst, wobei das zweite Antriebsmittel nicht dargestellt ist.
• 7 [7] eine Schnittansicht entlang der Linie VII-VII der 6 der Einheit der 6 zeigt.
• 8 [8] eine Detailansicht der Rückseite der Gleitschiene der 7 zeigt.
• 9 [9] eine Detailansicht der Vorderseite der Gleitschiene der 7 zeigt.
• 10 [10] eine schematische Seitenansicht eines Sitzes gemäß einem Anwendungsmodus gemäß der Erfindung zeigt.

Further features, details and advantages of the invention will appear on reading the following detailed description and analysis of the attached drawings, in which:

• 1 [ 1 Figure 3 shows a schematic plan view of a unit comprising two slide rails according to a first mode of application according to the invention.
• 2 [ 2 ] a sectional view along the line II-II of FIG 1 the unity of 1 shows.
• 3 [ 3 ] an enlarged detailed view of the 2 shows.
• 4th [ 4th Figure 2 shows a perspective view of a unit comprising two slide rails according to a second mode of application according to the invention, the second drive means not being shown.
• 5 [ 5 ] a detailed sectional view along the line VV of 4th the unity of 4th shows.
• 6th [ 6th Figure 2 shows a perspective view of a unit comprising two slide rails according to a third mode of application according to the invention, the second drive means not being shown.
• 7th [ 7th ] a sectional view along the line VII-VII of FIG 6th the unity of 6th shows.
• 8th [ 8th ] a detailed view of the rear of the slide rail of the 7th shows.
• 9 [ 9 ] a detailed view of the front of the slide rail of 7th shows.
• 10 [ 10 Figure 2 shows a schematic side view of a seat according to a mode of application according to the invention.

Description of the application modes

The drawings and the following description essentially contain elements of a certain type. They can therefore not only serve to provide a better understanding of the present invention, but in a specific case also contribute to its definition.

• - die Längsrichtung X der Gleitschiene (und somit des Sitzes, der die Gleitschiene aufnimmt) entspricht der Gleitrichtung des oberen Profils in Bezug auf das untere Profil der Gleitschiene, und somit des Sitzes in Bezug auf den Boden des Fahrzeugs, anhand der Gleitschiene,
• - die vertikale Richtung Z der Gleitschiene (oder des Sitzes der die Gleitschiene aufnimmt) entspricht der senkrechten Richtung zur Ebene des Bodens des Fahrzeugs, an dem die Gleitschiene befestigt ist, ebenfalls senkrecht zur Längsrichtung der zuvor definierten Gleitschiene,
• - die Querrichtung Y der Gleitschiene (oder des Sitzes der die Gleitschiene aufnimmt) ist die senkrechte Richtung zur zuvor definierten Längsrichtung und vertikalen Richtung.

In the entirety of the present application, the directions of space are defined as follows:

• - the longitudinal direction X the slide rail (and thus the seat that receives the slide rail) corresponds to the sliding direction of the upper profile in relation to the lower profile of the slide rail, and thus of the seat in relation to the floor of the vehicle, based on the slide rail,
• - the vertical direction Z the slide rail (or the seat that receives the slide rail) corresponds to the direction perpendicular to the plane of the floor of the vehicle to which the slide rail is attached, also perpendicular to the longitudinal direction of the previously defined slide rail,
• - the transverse direction Y the slide rail (or the seat that receives the slide rail) is the perpendicular direction to the previously defined longitudinal direction and vertical direction.

An axis is defined like a straight line along a certain direction. A longitudinal axis of the slide rail (or of the seat that receives the slide rail) is, for example, an axis along the longitudinal direction of the slide rail (or of the seat that receives the slide rail).

In addition, front and rear along the longitudinal direction of the slide rail (or of the seat that receives the slide rail) with an orientation from the longitudinal end of the slide rail near the backrest of the seat to which it is attached to the longitudinal end of the slide rail in the Near the front edge of the seat of the same seat.

In addition, up and down is understood to mean up and down along the vertical direction of the slide rail (or the seat which receives the slide rail), with an orientation from the slide rails to the seat surface of the seat which receives the slide rail.

And finally, in the entirety of the present application, essentially longitudinal, transverse or vertical is understood to mean an orientation in relation to the longitudinal direction, the vertical direction or the transverse direction, corresponding to an angle smaller than 30 °, which can advantageously be equal to zero.

• - ein unteres Profil 2, der dazu bestimmt ist, am Boden P eines Fahrzeugs befestigt zu werden,
• - ein oberes Profil 3, das in Bezug auf das untere Profil 2 entlang einer Längsachse X1 gleitend montiert ist,
• - ein erstes Antriebsmittel 4, das konfiguriert ist, um die Verschiebung des oberen Profils 3 in Bezug auf das untere Profil 2 entlang der Längsachse X1 anzutreiben.

The invention relates to a slide rail 1 for a vehicle seat, comprising:

• - a lower profile 2 that is destined to be on the ground P. to be attached to a vehicle,
• - an upper profile 3 that in relation to the lower profile 2 along a longitudinal axis X1 is slidingly mounted,
• - a first drive means 4th that is configured to accommodate the displacement of the top profile 3 in relation to the lower profile 2 along the longitudinal axis X1 to drive.

According to the invention, the slide rail comprises 1 also a second drive means 5 that is configured to accommodate the displacement of the top profile 3 in relation to the lower profile 2 along the first longitudinal axis X1 alternately or simultaneously with the first drive means 4th to drive.

This enables the use of a second drive means 5 that is simultaneous with the first drive means 4th the translational displacement of the upper profile 3 in relation to the lower profile 2 drives the displacement of the upper profile 3 in relation to the lower profile 2 to be driven at a greatly increased speed, for example more than 75 mm / s, for example in the order of 80 mm / s, only with a single drive means, such as with the slide rails of the prior art.

Thus it is possible to move the upper profile in translation 3 in relation to the lower profile 2 along the longitudinal axis X1 to be able to drive at a speed of more than 75 mm / s, which is particularly advantageous for the rapid displacement of a vehicle seat in relation to the floor P. of the vehicle, and in particular for a seat of an autonomous vehicle, in a situation in which the occupant of the seat, as previously explained in the introduction to the application, must quickly take control of the vehicle.

The fact a second propulsion means 5 to be provided simultaneously with the first drive means 4th works to shift the top profile 3 in relation to the lower profile 2 Drive also allows the noise and vibrations in the slide rail 1 when moving the upper profile 3 in relation to the lower profile 2 at increased speed, in particular higher than 75 mm / s, and in comparison to the use of a single drive means that works at increased speed to minimize.

Because each of the propulsion means 4th , 5 can be configured to accommodate the displacement of the top profile 3 in relation to the lower profile 2 at a speed substantially equal to half the desired speed of displacement of the upper profile 3 in relation to the lower profile 2 , for example to drive more than 37.5 mm / s in the case where a higher displacement speed of the upper profile 3 in relation to the lower profile 2 of 75 mm / s is desired, thereby minimizing the noise and vibrations generated in the slide rail by each of the drive means 4th , 5 be generated.

With the slide rail according to the invention 1 it is also possible to shift the top profile 3 in relation to the lower profile 2 to propel at a reduced speed, for example around 20 mm / s, in particular the displacement of the seat with respect to the floor P. of the vehicle in the longitudinal direction when adjusting the seating position by its occupants, as previously described in the introduction to the present application. In such a situation, only one of the drive means can be used 4th , 5 used to shift the top profile 3 in relation to the lower profile 2 in a manner similar to driving the slide rails of the prior art, which have a single drive means for the displacement of the upper profile 3 in relation to the lower profile 2 own.

• - gemäß einer ersten Alternative der erste Elektromotor 41 die Drehung der Mutter 43 antreibt, um deren translatorische Verschiebung in Bezug auf die Schnecke 42 entlang der Längsachse X1 anzutreiben,
• - gemäß einer zweiten Alternative der erste Elektromotor 41 die Drehung der Schnecke 42 antreibt, um deren translatorische Verschiebung in Bezug auf die Mutter 43 entlang der Längsachse X1 anzutreiben.

According to an application mode, the first comprises drive means 4th a first electric motor 41 that of a screw / nut unit with an endless screw 42 and a mother 43 that is connected to the snail 42 accommodates inside, and is configured in such a way that:

• - According to a first alternative, the first electric motor 41 the rotation of the mother 43 drives their translational displacement in relation to the worm 42 along the longitudinal axis X1 to drive
• - According to a second alternative, the first electric motor 41 the rotation of the snail 42 drives their translational displacement with respect to the nut 43 along the longitudinal axis X1 to drive.

The first alternative is through the application examples of the 1 until 5 while the second alternative is illustrated by the application examples of the 6th until 9 is shown.

• - gemäß der ersten Alternative, die Mutter 43 fest mit dem oberen Profil 3 verbunden und die Schnecke 42 fest mit dem unteren Profil 2 verbunden,
• - gemäß der zweiten Alternative, die Schnecke 42 fest mit dem oberen Profil 3 verbunden und die Mutter 43 fest mit dem unteren Profil 2 verbunden.

According to an application mode, and as in the application examples of the 1 until 9 can be seen is the first electric motor 41 firmly to the upper profile 3 connected, and:

• - according to the first alternative, the mother 43 firmly to the upper profile 3 connected and the snail 42 firmly to the lower profile 2 tied together,
• - according to the second alternative, the snail 42 firmly to the upper profile 3 connected and the mother 43 firmly to the lower profile 2 tied together.

• - gemäß der ersten Alternative, die Mutter 43 fest mit dem oberen Profil 3 verbunden sein und die Schnecke 42 fest mit dem unteren Profil 2 verbunden sein,
• - gemäß der zweiten Alternative, die Schnecke 42 fest mit dem oberen Profil 3 verbunden sind und die Mutter 43 fest mit dem unteren Profil 2 verbunden sein.

Alternatively, and without departing from the scope of the present invention, the first electric motor could 41 also firmly to the lower profile 2 be connected, and:

• - according to the first alternative, the mother 43 firmly to the upper profile 3 be connected and the snail 42 firmly to the lower profile 2 be connected
• - according to the second alternative, the snail 42 firmly to the upper profile 3 are connected and the mother 43 firmly to the lower profile 2 be connected.

According to one application mode, the first is motor 41 in the longitudinal direction X the slide rail 1 , essentially in the middle of the top profile 3 positioned.

Such an application mode is particularly suitable for a slide rail 1 , which is realized according to the first alternative described above, and for example in the 1 until 5 is shown in which the first electric motor 41 the rotation of the mother 43 drives their translational displacement in relation to the worm 42 along the first longitudinal axis X1 to drive.

Such a positioning of the first engine 41 allows for a balancing of the slide rail 1 , and especially the upper profile 3 to take care of the noise and vibrations when moving the upper profile 3 in relation to the lower profile 2 to minimize.

As in the application examples of the 1 , 2 and 4th can be seen, is understood by "essentially in the middle of the upper profile 3" that the first motor 41 such in the longitudinal direction X the slide rail 1 is positioned that the distance that is the axis of rotation A41 from the stator in relation to the rotor of the motor 41 from each of the longitudinal ends 31 , 32 of the upper profile 3 separates, is substantially the same, or has a difference of less than 20%.

The first engine 41 can be positioned so that the axis of rotation A41 its stator with respect to its rotor in a substantially transverse direction Y the slide rail 1 is aligned with the first motor 41 a wave S41 having along the axis of rotation A41 is aligned.

As in the application example of the 5 can be seen in more detail, the wave S41 of the first engine 41 to the mother 43 the unit screw / nut of the slide rail 1 , through a reduction gear G41 be connected that is configured to rotate the nut 43 in relation to the upper profile 3 every slide rail 1 about a substantially longitudinal axis of the slide rail 1 , and especially the longitudinal axis X1 to be able to drive.

According to one application mode, the first is an electric motor 41 along the longitudinal direction X the slide rail 1 , in the area of one of the two longitudinal ends 31 of the upper profile 3 positioned.

Such an application mode is particularly suitable for a slide rail 1 , which is realized according to the second alternative described above, and for example in the 6th until 9 is shown in which the first electric motor 41 the rotation of the snail 42 drives their translational displacement with respect to the nut 43 along the longitudinal axis X1 to drive.

Advantageously, and as in the application examples 6th to see 8, the first engine can 41 in the area of the rear longitudinal end 31 of the upper profile 3 , e.g. the longitudinal end 31 of the upper profile 3 that is designed to be essentially opposite the rear edge AR the seat A. and the backrest D. of the seat S. to be located of the slide rail 1 receives, be positioned, as in the application example of 10 can be seen with it the first engine 41 through the seat A. and the backrest D. of the seat S. is hidden to the aesthetic look of the seat S. no harm.

The first engine 41 can be positioned so that the axis of rotation A41 its stator with respect to its rotor in a substantially transverse direction Y the slide rail 1 is aligned with the first motor 41 a wave S41 having along the axis of rotation A41 is aligned.

As in particular in the application example of the 8th can be seen the wave S41 of the first engine 41 to the snail 42 the unit screw / nut of the slide rail 1 through a countershaft gear (not shown) configured to control the rotation of the auger 42 in relation to the upper profile 3 every slide rail 1 about a substantially longitudinal axis of the slide rail 1 , and especially the longitudinal axis X1 the slide rail 1 to be able to drive.

According to one application mode, the first is an electric motor 41 along the longitudinal direction X the slide rail 1 , in the area of a first longitudinal end 31 of the upper profile 3 positioned, and a first guide bearing 6th that is configured to the endless screw 42 to be taken inside in the longitudinal direction X the slide rail 1 , from the first longitudinal end 31 of the upper profile 3 is positioned away.

Such an application mode is particularly suitable for a slide rail 1 , which is realized according to the second alternative described above, and for example in the 6th until 9 is shown in which the first electric motor 41 the rotation of the snail 42 that drives firmly to the upper profile 3 is connected to its translational displacement with respect to the mother 43 to drive that firmly to the lower profile 2 along the first longitudinal axis X1 connected is.

For this purpose, the first guide bearing 6th advantageously configured to accommodate the rotation of the screw 42 along the essentially longitudinal axis of the slide rail 1 , and especially the longitudinal axis X1 to allow.

The positioning of the first guide bearing 6th along the longitudinal direction X the slide rail 1 can depending on the desired path between the upper profile 3 and the lower profile 2 along the longitudinal direction X the slide rail 1 to be selected. In order to maximize this path, the first guide bearing 6th advantageously in the area of the second longitudinal end 32 of the upper profile 3 be positioned.

As in the application examples of the 7th and 8th such a guide bearing makes it possible to see 6th to hold the screw in position 42 in relation to the upper profile 3 , in cooperation with the first electric motor 41 to ensure that the screw is also held in position 42 ensures, but also for an absorption by the snail 42 absorbed forces, for example in the event of a collision with the vehicle, the slide rail 1 records.

As especially in the application example of the 7th can see the snail 42 such a first longitudinal end E42 and a second longitudinal end E42 ' have, the first motor 41 to the first snail 42 in the area of their first longitudinal end E42 can be connected while the first guide bearing 6th the snail 42 , for example in the area of their second longitudinal end E42 ' records.

As in the application examples of the 7th and 9 can be seen to facilitate the rotational guidance of the screw 42 , and in particular their second longitudinal end E42 ' in relation to the first guide bearing 6th , a bearing bush 61 between the first guide bearing 6th and the snail 42 , and in particular its second longitudinal end E42 ' to be ordered.

The bearing bush 61 can also be configured to hold the screw in translation 42 in relation to the first guide bearing 6th and thus in relation to the upper profile 3 the slide rail 1 along the longitudinal direction X the slide rail 1 to care.

One or more other guide bearings, in particular similar to the first guide bearing described above, can possibly be used 6th be provided that is firmly attached to the upper profile 3 the slide rail 1 is connected between the first longitudinal end 31 and the second longitudinal end 32 of the upper profile 3 and between the first longitudinal end E42 and the second longitudinal end E42 ' the snail 42 are positioned to put the composition between the auger 42 and the top profile 3 to stiffen.

• - gemäß der ersten Alternative der zweite Elektromotor 51 die Drehung der Schnecke 42 derart antreibt, um deren translatorische Verschiebung in Bezug auf die Mutter 43 entlang der Längsachse X1 anzutreiben,
• - gemäß der zweiten Alternative der zweite Elektromotor 51 die Drehung der Mutter 43 derart antreibt, um deren translatorische Verschiebung in Bezug auf die Schnecke 42 entlang der Längsachse X1 anzutreiben.

According to an application mode, the second drive means comprises 5 a second electric motor 51 connected to the screw / nut unit and configured in such a way that:

• - According to the first alternative, the second electric motor 51 the rotation of the snail 42 so drives to their translational displacement with respect to the mother 43 along the longitudinal axis X1 to drive
• - according to the second alternative, the second electric motor 51 the rotation of the mother 43 drives in such a way to their translational displacement with respect to the worm 42 along the longitudinal axis X1 to drive.

This allows the translational displacement along the longitudinal axis X1 of the upper profile 3 in relation to the lower profile 2 from the combined rotation of the screw 42 and the mother 43 in relation to the upper profile 3 and the lower profile 2 result to double their relative speed of rotation, whereby it is possible, as previously explained, to increase the speed of displacement of the upper profile 3 in relation to the lower profile 2 to increase significantly, and in particular to achieve an increased displacement speed, for example higher than 75 mm / s, and thereby that in the slide rail 1 to reduce generated noises and vibrations, which makes it possible to improve the quality perceived by the user when moving the upper profile 3 in relation to the lower profile 2 not to deteriorate.

Alternatively, and in the case where a lower speed of displacement of the upper profile 3 in relation to the lower profile 2 is desired, only the second drive means can 5 , via the second electric motor 51 and the screw / nut unit drive this displacement in order to achieve a displacement speed which is substantially the same as that which can be achieved with only one drive by means of the first drive means 4th , about the first electric motor 41 and the screw / nut unit is obtained.

According to one application mode, the second is an electric motor 51 firmly to the lower profile 2 tied together.

Such an application mode turns out to be particularly advantageous in the case in which the first electric motor 41 as previously described, firmly to the upper profile 3 connected is.

According to one application mode, the second is an electric motor 51 along the longitudinal direction X the slide rail 1 , in the area of one of the two longitudinal ends 21 , 22nd of the lower profile 2 positioned.

Such an application mode turns out to be particularly advantageous in the case in which the first electric motor 41 along the longitudinal direction X the slide rail 1 , as previously described, essentially in the middle of the upper profile 3 is positioned.

This advantageously makes it possible to reduce the weight of the two electric motors 41 , 51 along the longitudinal direction X the slide rail 1 to distribute to the noise and the vibrations of the same during the operation of the electric motors 41 , 51 to minimize.

As in the application examples of the 1 and 2 can see the second electric motor 51 in the area of the rear longitudinal end 21 of the lower profile 2 , e.g. the longitudinal end 21 of the lower profile 2 , which is intended to be positioned essentially opposite the rear edge AR the seat A. and the backrest D. of the seat S. to be located of the slide rail 1 takes up, as in the application example of the 10 can be seen with it the second engine 51 through the seat A. and the backrest D. of the seat S. , is hidden to the aesthetic look of the seat S. no harm.

The second engine 51 can be positioned such that the axis of rotation A51 of its stator with respect to its rotor is in a substantially transverse direction Y the slide rail 1 is aligned with the second motor 51 has a shaft S51 which is aligned along the axis of rotation A51.

As in particular in the application example of the 2 can be seen the shaft S51 of the second motor 51 to the mother 43 the unit screw / nut of the slide rail 1 , through a counter gear (not shown) configured to control the rotation of the worm 42 in relation to the lower profile of the slide rail 1 about a substantially longitudinal axis of the slide rail 1 , and especially along the longitudinal axis X1 to be able to drive.

According to one application mode, the second is an electric motor 51 along the longitudinal direction X the slide rail 1 , in the area of the first longitudinal end 21 of the lower profile 2 positioned, and in the a second guide bearing 7th that is configured to inside the endless screw 42 of the screw / nut unit, along the longitudinal direction X the slide rail 1 , from the first longitudinal end 21 of the lower profile 2 is positioned away.

The second guide bearing 7th is advantageously configured to accommodate the rotation of the screw 42 along a substantially longitudinal axis of the slide rail 1 , and especially the longitudinal axis X1 to allow.

As in the application examples of the 1 until 3 such a guide bearing makes it possible to see 7th , for the hold in position of the worm 42 in relation to the lower profile 2 , in cooperation with the second electric motor 51 to ensure that the screw is also held in position 42 ensures, but also for an absorption by the snail 42 absorbed forces, for example in the event of a vehicle impact, the slide rail 1 records.

The positioning of the second guide bearing 7th along the longitudinal direction X the slide rail 1 can depending on the desired path between the upper profile 3 and the lower profile 2 along the longitudinal direction X the slide rail 1 to be selected. To maximize this path, the second guide bearing 7th advantageously in the area of the second longitudinal end 22nd of the lower profile 2 be positioned.

As in particular in the application example of the 2 can see the snail 42 thus a first longitudinal end E42 and a second longitudinal end E42 ' have, the second motor 51 thus to the snail 42 in the area of their first longitudinal end E42 can be connected while the second guide bearing 7th the snail 42 for example in the area of their second longitudinal end E42 ' records.

As in the application examples of the 2 and 3 can be seen to facilitate the rotational guidance of the screw 42 , and in particular its second longitudinal end E42 ' in relation to the second guide bearing 7th , a bearing bush 71 between the second guide bearing 7th and the snail 42 , and in particular its second longitudinal end E42 ' to be ordered.

The bearing bush 71 can also be configured to hold the screw in translation 42 in relation to the second guide bearing 7th and thus in relation to the lower profile 2 the slide rail 1 along the longitudinal direction X the slide rail 1 to take care of, for example, by adding an extension piece or two E71 has on both sides of the guide bearing 7th are arranged.

Alternatively, as in particular in the application example of 3 can be seen the translational hold of the worm 42 in relation to the second guide bearing 7th and thus in relation to the lower profile 2 the slide rail 1 , along the longitudinal direction X the slide rail 1 also using at least one catch ring 72 that in relation to the guide bearing 7th and in relation to the snail 42 can be removed.

One or more other guide bearings 7th , in particular similar to the previously described second guide bearing 7th can possibly be provided firmly with the lower profile 2 the slide rail 1 connected between the first longitudinal end 21 and the second longitudinal end 22nd of the lower profile 2 and between the first longitudinal end E42 and the second longitudinal end E42 ' the snail 42 are positioned to put the composition between the auger 42 and the lower profile 2 to stiffen.

The invention also relates to a unit comprising two slide rails 1 according to one of the previously described application modes, wherein the lower profile 2 the first slide rail 1 essentially parallel to the lower profile 2 the second slide rail 1 is arranged.

Advantageously, and as in the application examples of 1 , 4th and 6th you can see the first and second slide rails 1 substantially identical and intended to be symmetrical with respect to a longitudinal axis of the slide rails 1 firmly on the ground P. of a vehicle to be connected.

The longitudinal translation axis X1 of the upper profile 3 in relation to the lower profile 2 the first slide rail 1 is essentially parallel to the longitudinal displacement axis X1 of the upper profile 3 in relation to the lower profile 2 the second slide rail 1 .

According to an application mode, the first is drive means 4th the first slide rail 1 the same as the first drive means 4th the second slide rail 1 .

Thus, the first drive means 4th at the same time the displacement of the upper profile 3 in relation to the lower profile 2 the first slide rail 1 and the displacement of the upper profile 3 in relation to the lower profile 2 the second slide rail 1 drive.

This advantageous arrangement of the invention makes it possible to reduce the cost of the unit according to the invention in relation to such a unit which has its own first drive means 4th for each of the slide rails 1 the unit includes.

This also makes it easier to control the simultaneous displacement of the upper profile 3 in relation to the lower profile 2 the first slide rail 1 and the displacement of the upper profile 3 in relation to the lower profile 2 the second slide rail 1 , since it is not necessary to coordinate between two different drive means 4th for each of the slide rails 1 the unit to be provided.

• - das erste Antriebsmittel 4 einen ersten Elektromotor 41 umfasst, der an die Einheit Schnecke/Mutter jeder Gleitschiene 1 angeschlossen ist, mit der Endlosschnecke 42, die fest mit dem unteren Profil 2 verbunden ist, und der Mutter 43, die fest mit dem oberen Profil 3 verbunden ist, die innen die Schnecke 42 aufnimmt, und derart konfiguriert ist, dass, gemäß der ersten Alternative, der erste Elektromotor 41 die Drehung der Mutter 43 derart antreibt, um deren translatorische Verschiebung in Bezug auf die Schnecke 42 entlang der Längsachse X1 anzutreiben, und
• - der erste Motor 41 entlang der Längsrichtung X der ersten Gleitschiene 1 und der zweiten Gleitschiene 1, im Wesentlichen in der Mitte des oberen Profils 2 jeder Gleitschiene 1 der Einheit positioniert ist, kann der erste Motor 41 im Wesentlichen in der Mitte der beiden Gleitschienen 1 der Einheit, entlang der Querrichtung Y der Gleitschienen 1 positioniert werden.

As in the application examples of the 1 , 2 and 4th to see in the event that for each of the slide rails 1 the unit:

• - the first drive means 4th a first electric motor 41 includes that of the screw / nut unit of each slide rail 1 connected to the endless screw 42 that are firmly attached to the lower profile 2 connected, and the mother 43 , which are fixed to the top profile 3 is connected to the inside of the snail 42 receives, and is configured such that, according to the first alternative, the first electric motor 41 the rotation of the mother 43 drives in such a way to their translational displacement with respect to the worm 42 along the longitudinal axis X1 to drive, and
• - the first engine 41 along the longitudinal direction X the first slide rail 1 and the second slide rail 1 , essentially in the middle of the top profile 2 every slide rail 1 the unit is positioned, the first motor can 41 essentially in the middle of the two slide rails 1 of the unit, along the transverse direction Y the slide rails 1 be positioned.

Under “essentially in the middle of the two slide rails 1 of the unit in the transverse direction Y the slide rails 1 ″ one understands that the distance that the first motor 41 from each of the slide rails 1 in the transverse direction Y of the slide rails separates, is essentially the same, or does not exceed at least a difference of 20%.

This arrangement makes it possible to ensure the balance of the unit, particularly when moving the upper profile 3 in relation to the lower profile 2 of each of the slide rails 1 based on the first drive means 4th to reduce the noise and vibrations in the slide rails 1 to minimize when shifting.

As in particular in the application example of the 1 and 4th can see the first engine 41 two parallel waves S41 include those on both sides of the engine 41 along the transverse direction Y of the slide rails are arranged 1, which, as previously described, along the axis of rotation A41 of the first motor are aligned.

As in particular in the application example of the 5 can see any of the waves S41 of the first engine 41 to a mother 43 the screw / nut unit of each of the slide rails 1 using a countershaft G41 be connected, which is configured to the rotation of the nut 43 in relation to the upper profile 3 every slide rail 1 about a substantially longitudinal axis of the slide rails 1 , and especially the longitudinal axis X1 each of the slide rails 1 to be able to drive.

According to one application mode, the second is drive means 5 the first slide rail 1 the same as the second drive means 5 the second slide rail 1 .

Thus, the second drive means 5 at the same time the displacement of the upper profile 3 in relation to the lower profile 2 the first slide rail 1 and the displacement of the upper profile 3 in relation to the lower profile 2 the second slide rail 1 drive.

This advantageous arrangement of the invention makes it possible to reduce the cost of the unit according to the invention in relation to such a unit which has a different second drive means 5 for each of the slide rails 1 the unit includes.

This also makes it easier to control the simultaneous displacement of the upper profile 3 in relation to the lower profile 2 the first slide rail 1 and the displacement of the upper profile 3 in relation to the lower profile 2 the second slide rail 1 , since it is not necessary to coordinate between two different second drive means 5 for each of the slide rails 1 the unit to be provided.

• - das zweite Antriebsmittel 5 einen zweiten Elektromotor 51 umfasst, der an die Einheit Schnecke/Mutter jeder Gleitschiene 1 angeschlossen ist, mit der Endlosschnecke 42, die fest mit dem unteren Profil 2 verbunden ist, und der Mutter 43, die fest mit dem oberen Profil 3 verbunden ist, die innen die Schnecke 42 aufnimmt, und derart konfiguriert ist, dass gemäß der ersten Alternative, der zweite Elektromotor 51 die Drehung der Schnecke 42 derart antreibt, um deren translatorische Verschiebung in Bezug auf die Mutter 43 entlang der Längsachse X1 anzutreiben, und
• - der zweite Motor 51 entlang der Längsrichtung X der ersten Gleitschiene 1 und der zweiten Gleitschiene 1, im Bereich eines der beiden Längsenden 21, 22 des unteren Profils 2 positioniert ist, kann der zweite Motor 51 im Wesentlichen in der Mitte der beiden Gleitschienen 1 der Einheit, entlang der Querrichtung Y der Gleitschienen 1 positioniert werden.

As in the application examples of the 1 and 2 to see in the event that for each of the slide rails 1 the unit:

• - the second drive means 5 a second electric motor 51 includes that of the screw / nut unit of each slide rail 1 connected to the endless screw 42 that are firmly attached to the lower profile 2 connected, and the mother 43 that are firmly attached to the top profile 3 is connected to the inside of the snail 42 receives, and is configured such that according to the first alternative, the second electric motor 51 the rotation of the snail 42 so drives to their translational displacement with respect to the mother 43 along the longitudinal axis X1 to drive, and
• - the second engine 51 along the longitudinal direction X the first slide rail 1 and the second slide rail 1 , in the area of one of the two longitudinal ends 21 , 22nd of the lower profile 2 is positioned, the second motor can 51 essentially in the middle of the two slide rails 1 of the unit, along the transverse direction Y the slide rails 1 be positioned.

Under “essentially in the middle of the two slide rails 1 of the unit, along the transverse direction Y the slide rails 1 ″ one understands that the distance that the second motor 51 from each of the slide rails 1 along the transverse direction Y of the slide rails separates, is essentially the same, or does not exceed at least a difference of 20%.

This arrangement makes it possible to ensure the balance of the unit, particularly when moving the upper profile 3 in relation to the lower profile 2 of each of the slide rails 1 based on the second drive means 5 to reduce the noise and vibrations in the slide rails 1 to minimize when shifting.

As in particular in the application example of the 1 can see the second engine 51 comprise two parallel shafts S51 on either side of the motor 51 along the transverse direction Y of the slide rails are arranged 1, which, as described above, are aligned along the axis of rotation A51 of the first motor.

Each of the shafts S51 of the second motor 51 can to the snail 42 the screw / nut unit of each of the slide rails 1 , be connected by means of a countershaft (not shown) configured to control the rotation of the worm 42 in relation to the lower profile 2 of each slide rail 1 about a substantially longitudinal axis of the slide rails 1 , and especially the longitudinal axis X1 of each of the slide rails 1 to be able to drive.

Alternatively, and without departing from the scope of the present invention, the first drive means could 4th the first slide rail 1 also from the first drive means 4th the second slide rail 1 differentiate.

In addition, the second drive means could 5 the first slide rail 1 also from the second drive means 5 the second slide rail 1 differentiate.

• Antreiben der Verschiebung des oberen Profils 3 in Bezug auf das untere Profil 2 entlang der Längsachse X1 der Gleitschiene 1 mit einer ersten Geschwindigkeit V1, nur anhand des ersten Antriebsmittels 4, oder
• Antreiben der Verschiebung des oberen Profils 3 in Bezug auf das untere Profil 2 entlang der Längsachse der Gleitschiene mit einer zweiten Geschwindigkeit V2, nur anhand des zweiten Antriebsmittels 5, oder
• Antreiben der Verschiebung des oberen Profils 3 in Bezug auf das untere Profil 2 entlang der Längsachse X1 der Gleitschiene 1 mit einer dritten Geschwindigkeit V3, gleichzeitig anhand des ersten Antriebsmittels 4 und des zweiten Antriebsmittels 5.

The invention also relates to a method for moving the upper profile 3 in relation to the lower profile 2 along the longitudinal axis X1 a slide rail 1 according to one of the previously described application modes, comprising the following steps:

• Driving the displacement of the upper profile 3 in relation to the lower profile 2 along the longitudinal axis X1 the slide rail 1 with a first speed V1, based only on the first drive means 4th , or
• Driving the displacement of the upper profile 3 in relation to the lower profile 2 along the longitudinal axis of the slide rail at a second speed V2, only by means of the second drive means 5 , or
• Driving the displacement of the upper profile 3 in relation to the lower profile 2 along the longitudinal axis X1 the slide rail 1 at a third speed V3, simultaneously using the first drive means 4th and the second drive means 5 .

The second speed V2 can in particular be essentially the same as the first speed V1.

As before with regard to the slide rail 1 explained, thanks to such a procedure it is possible to shift the upper profile 3 in relation to the lower profile 2 the slide rail 1 with different speeds to consider: V1, V2 or V3, and in particular with a reduced speed V1 (or V2), for example below 50 mm / s, for example of the order of 20 mm / s, but also at a high speed V3 , for example over 75 mm / s, for example in the order of 80 mm / s, and minimizing the noise and vibrations in the slide rail 1 when moving the upper profile 3 in relation to the lower profile 2 in order not to degrade the quality perceived by the occupant of the seat receiving the slide rail, of the vehicle (or by the other vehicle occupants).

These different speeds V1, V2, V3 can, as described in the introduction to the present application, correspond to different situations.

The speed V3 can, for example, correspond to the sum of the speeds V1 and V2 in order to obtain a faster displacement speed V3, for example above 75 mm / s, or the difference between the speeds V1 and V2, in order to obtain a slower displacement speed, for example below 30 mm / s. s, the sign of this difference being the direction of displacement of the upper profile 3 in relation to the lower profile 2 certainly.

Such a method can advantageously be implemented using an electronic control means which can advantageously determine in automatic form the speed V1, V2 or V3 at which the displacement of the upper profile is carried out 3 in relation to the lower profile 2 takes place depending on information about the situation.

The invention finally relates to a seat S. of a vehicle comprising a slide rail according to one of the previously described application modes or a unit according to one of the previously described application modes.

Such a seat S. of a vehicle can advantageously be a motor vehicle seat, and in particular, as explained above, a seat of an autonomous vehicle.

Of course, other modes of application could also have been considered by the person skilled in the art without going beyond the scope defined by the following claims.

List of reference symbols

1.

Slide rail

X1.

Longitudinal axis

2.

Lower profile

21.

First longitudinal end

22nd

Second longitudinal end

3.

Upper profile

31.

First longitudinal end

32.

Second longitudinal end

4th

First propulsion means

41.

First electric motor

A41.

Axis of rotation

S41.

wave

G41.

transmission

42.

Endless screw

E42.

First longitudinal end

E42 '.

Second longitudinal end

43.

mother

5.

Second propulsion means

51

Second electric motor

6th

First guide camp

61.

Bearing bush

7th

Second guide bearing

71

Bearing bush

E71.

Extension piece

72.

Catch ring

X.

Longitudinal direction

Y.

Transverse direction

Z.

Vertical direction

S.

Seat

A.

Seat

D.

backrest

AR.

Back edge

P.

floor

Claims (15)

Slide rail (1) for a vehicle seat (S), comprising: - a lower profile (2) intended to be fixed to the floor (P) of a vehicle, - an upper profile (3) which, in relation to the lower profile (2) is slidably mounted along a longitudinal axis (X1), - a first drive means (4) configured to drive the displacement of the upper profile (3) with respect to the lower profile (2) along the longitudinal axis (X1), thereby characterized in that the slide rail (1) also comprises a second drive means (5) configured to move the upper profile (3) with respect to the lower profile (2) along the longitudinal axis (X1) alternatively or simultaneously with the first Drive means (4) to drive. Slide rail according to Claim 1 wherein the first drive means (4) comprises a first electric motor (41) which is connected to a screw / nut unit with an endless screw (42) and a nut (43) which internally receives the screw (42) and is configured in such a way that: - according to a first alternative, the first electric motor (41) drives the rotation of the nut (43) in order to drive its translational displacement with respect to the worm (42) along the longitudinal axis (X1), - according to a second alternative , the first electric motor (41) drives the rotation of the worm (42) in such a way as to drive its translational displacement with respect to the nut (43) along the longitudinal axis (X1). Slide rail (1) Claim 2 , wherein the first electric motor (41) is connected to the upper profile (3), and: - according to the first alternative, the nut (43) is connected to the upper profile (3) and the worm (42) is connected to the lower profile ( 2), - according to the second alternative, the screw (42) is connected to the upper profile (3) and the nut (43) is connected to the lower profile (2). Slide rail (1) Claim 3 wherein the first motor (41) is positioned along the longitudinal direction (X) of the slide rail (1), substantially in the middle of the upper profile (3). Slide rail (1) Claim 3 , wherein the first electric motor (41) is positioned along the longitudinal axis (X) of the slide rail (1), in the area of one of the two longitudinal ends (31, 32) of the upper profile (3). Slide rail (1) Claim 5 , wherein the first electric motor (41) is positioned along the longitudinal axis (X) of the slide rail (1), in the region of a first longitudinal end (31) of the upper profile (3), and wherein a first guide bearing (6) configured to the Receiving endless screw (42) inside, along the longitudinal axis (X) of the slide rail (1), at a distance from the first longitudinal end (31) of the upper profile (3) is positioned. Slide rail (1) according to one of the Claims 1 until 6th the second drive means (5) comprising a second electric motor (51) connected to the screw / nut unit and configured in such a way that: - according to the first alternative, the second electric motor (51) controls the rotation of the screw ( 42) drives in such a way as to drive its translational displacement with respect to the nut (43) along the longitudinal axis (X1), - according to the second alternative, the second electric motor (51) drives the rotation of the nut (43) in such a way as to reduce its translational To drive displacement with respect to the screw (42) along the longitudinal axis (X1). Slide rail (1) Claim 7 in combination with the Claim 3 or 4th , wherein the second electric motor (51) is connected to the lower profile (2). Slide rail (1) Claim 8 in combination with the Claim 4 , wherein the second electric motor (51) is positioned along the longitudinal direction (X) of the slide rail, in the area of one of the two longitudinal ends (21, 22) of the lower profile (2). Slide rail (1) Claim 9 , wherein the second electric motor (51) is positioned along the longitudinal direction (X) of the slide rail (1), in the region of a first longitudinal end (21) of the lower profile (2), and wherein a second guide bearing (7) configured to the Endless screw (42) of the unit screw / nut inside to receive, along the longitudinal axis (X) of the slide rail (1) at a distance from the first longitudinal end (21) of the lower profile (2) is positioned. Unit, two slide rails (1) after one of the Claims 1 until 10 comprising, wherein the lower profile (2) of the first slide rail (1) is arranged substantially parallel to the lower profile (2) of the second slide rail (1). Unit after Claim 11 wherein the first drive means (4) of the first slide rail (1) is the same as the first drive means (4) of the second slide rail (1). Unit after Claim 11 or 12th wherein the second drive means (5) of the first slide rail (1) is the same as the second drive means (5) of the second slide rail (1). Method for moving the upper profile (3) with respect to the lower profile (2) along the longitudinal axis (X1) of a slide rail (1) according to one of the Claims 1 until 10 , comprising the following steps: driving the displacement of the upper profile (3) with respect to the lower profile (2) along the longitudinal axis (X1) of the slide rail (1) at a first speed (V1), only by means of the first drive means (4 ), or drive the displacement of the upper profile (3) with respect to the lower profile (2) along the longitudinal axis (X1) of the slide rail (1) at a second speed (V2), only by means of the second drive means (5), or Drive the displacement of the upper profile (3) in relation to the lower profile (2) along the longitudinal axis (X1) of the slide rail (1) at a third speed (V3), simultaneously using the first drive means (4) and the second drive means ( 5). Seat (S) of a vehicle, a slide rail (1) according to one of the Claims 1 until 10 or a unit according to one of the Claims 11 until 13th full.

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