EP4540101A1 - Système d'extension vers l'avant d'une assise de siège de véhicule automobile - Google Patents
Système d'extension vers l'avant d'une assise de siège de véhicule automobileInfo
- Publication number
- EP4540101A1 EP4540101A1 EP23732125.2A EP23732125A EP4540101A1 EP 4540101 A1 EP4540101 A1 EP 4540101A1 EP 23732125 A EP23732125 A EP 23732125A EP 4540101 A1 EP4540101 A1 EP 4540101A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shelf
- seat
- gear motor
- nut
- external screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/90—Details or parts not otherwise provided for
- B60N2/995—Lower-leg-rests, e.g. calf-rests
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/0224—Non-manual adjustments, e.g. with electrical operation
- B60N2/02246—Electric motors therefor
- B60N2/02253—Electric motors therefor characterised by the transmission between the electric motor and the seat or seat parts
Definitions
- the invention relates to a system for extending a motor vehicle seat base towards the front, said system being intended to ensure reception in a substantially horizontal position of the legs of an occupant of said seat, and a motor vehicle seat including such a system.
- an extension for receiving said legs said extension comprising a first and a second shelf, knowing that: o said first shelf is mounted to rotate around a transverse axis disposed at the front of said seat, said first shelf having a position retracted, where it is located at the front of said seat in a substantially vertical position, and a deployed position reached by rotation upwards, where it extends said seat forward to arrange the appearance faces of said seat and of said first shelf in a substantially coplanar manner, o said second shelf is mounted sliding longitudinally relative to said first shelf, said second shelf having a retracted position, where it is arranged covering said first shelf, and an deployed position reached by sliding towards the front, where it extends said first shelf towards the front to arrange the appearance faces of said shelves in a substantially coplanar manner,
- a motorized device for operating said shelves from one position to another, so as to reversibly move said extension from one position to another; retracted configuration to an deployed configuration, said device comprising a first electric gear motor for actuating said first tablet in rotation and a second electric gear motor for actuating said second tablet in longitudinal translation relative to said first tablet.
- a problem arising with such an achievement is to be able to have an extension long enough to be able to efficiently ensure its function of receiving the legs of an occupant, and this by implementing an arrangement as simple, economical, robust and compact as possible.
- the aim of the invention is to propose an arrangement making it possible to meet these expectations.
- the invention proposes a system for extending a motor vehicle seat base towards the front, said system being intended to ensure reception in a substantially horizontal position of the legs of a occupant of said seat, said system comprising:
- an extension for receiving said legs said extension comprising a first and a second shelf, knowing that: o said first shelf is mounted to rotate around a transverse axis disposed at the front of said seat, said first shelf having a position retracted, where it is located at the front of said seat in a substantially vertical position, and a deployed position reached by rotation upwards, where it extends said seat forward to arrange the appearance faces of said seat and of said first shelf in a substantially coplanar manner, o said second shelf is mounted sliding longitudinally relative to said first shelf, said second shelf having a retracted position, where it is arranged covering said first shelf, and an deployed position reached by sliding towards the front, where it extends said first shelf towards the front to arrange the appearance faces of said shelves in a substantially coplanar manner,
- a motorized device for operating said shelves from one position to another, so as to reversibly move said extension from a retracted configuration to an deployed configuration, said device comprising a first electric gear motor for actuating said first shelf in rotation and a second electric gear motor for actuating said second shelf in longitudinal translation relative to said first shelf, said device further comprising:
- the terms of positioning in space are taken with reference to the system in place in the vehicle, said vehicle s extending longitudinally along its length, transversely along its width and vertically along its height.
- the stroke length of the second shelf is substantially doubled, and this in a simple, compact and economical manner, particularly in comparison with systems using works, as in the production of CN1 14506253-A, complex articulations by connecting rods.
- the installation of double slides allows on the one hand a maximized deployment towards the front of the second shelf when it is placed in the deployed position and on the other hand a recovery of effort to support the weight of the legs of the occupant of the seat.
- the maximum deployment of the second shelf may be accompanied, where appropriate, by the appearance of a void between said second shelf and the first shelf, particularly in the case where the longitudinal dimension of said second shelf is greater than that of said first tablet.
- the invention proposes a vehicle seat comprising such a system.
- FIG.1c are schematic side views of a seat provided with a system according to one embodiment, the extension being in retracted configuration (figure 1a), being deployed (figure 1b) and in deployed configuration (figure 1c),
- FIG.2 is a schematic perspective view of an actuation device according to one embodiment
- FIG.3 is a schematic perspective view of the actuation device of Figure 2 integrated into a seat seen from below, the extension being in retracted configuration
- FIG.4c are partial schematic top views of the actuating device of Figures 2 and 3 corresponding to the retracted position of the second tablet (Figure 4a), to its partial deployment ( Figure 4b) and to its deployed position ( Figure 4a). figure 4c),
- FIG.5 is a schematic partial sectional view of a seat showing an embodiment of a double slide.
- a system for extending forwards of a seat 2 of a seat 3 of a motor vehicle is described, said system being intended to ensure reception in a substantially horizontal position of the legs of an occupant of said seat, said system comprising:
- an extension 4 for receiving said legs said extension comprising a first 5 and a second 6 shelf, knowing that: o said first shelf is mounted to rotate around a transverse axis 7 disposed at the front of said seat, said first tablet having a retracted position, where it is located at the front of said seat in a substantially vertical position, and a deployed position reached by rotation upwards, where it extends said seat towards the front to arrange the appearance faces of said seat 8 and said first shelf 9a in a substantially coplanar manner, o said second shelf is mounted sliding longitudinally relative to said first shelf, said second shelf having a retracted position, where it is arranged covering said first shelf, and a position deployed reached by sliding forwards, where it extends said first shelf forwards to arrange the appearance faces of said shelves 9a, 9b in a substantially coplanar manner,
- a motorized device 10 for actuating said shelves from one position to another, so as to reversibly pass said extension from a retracted configuration to an deployed configuration, said device comprising a first electric gear motor 11 for actuating said first rotating tablet and a second electric gear motor 12 for actuating said second tablet in longitudinal translation relative to said first tablet, said device further comprising:
- a support 25 comprises a first groove 25a slidingly receiving the first rail 23 and a second groove 25b slidingly receiving the second rail 24.
- the axis 20 of the motor is parallel to that 21 of the endless screws 14,16, so as to avoid angle transmissions in the gears and minimize the bulk of the second geared motor 12.
- the second gear motor 12 and the nut 13 are mounted in a pendulum manner to be able to move freely according to a transverse play and absorb dimensional dispersions, so as to avoid blocking by bracing of the actuating device 10 .
- a seat 3 of a motor vehicle comprising such a system, said system being mounted at the front of the seat 2 of said seat.
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2205759A FR3136415B1 (fr) | 2022-06-14 | 2022-06-14 | Système d’extension vers l’avant d’une assise de siège de véhicule automobile |
| PCT/EP2023/065683 WO2023242134A1 (fr) | 2022-06-14 | 2023-06-12 | Système d'extension vers l'avant d'une assise de siège de véhicule automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4540101A1 true EP4540101A1 (fr) | 2025-04-23 |
Family
ID=82595069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23732125.2A Pending EP4540101A1 (fr) | 2022-06-14 | 2023-06-12 | Système d'extension vers l'avant d'une assise de siège de véhicule automobile |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4540101A1 (fr) |
| FR (2) | FR3136415B1 (fr) |
| WO (1) | WO2023242134A1 (fr) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101426544B1 (ko) * | 2012-10-30 | 2014-08-05 | 대원강업주식회사 | 차량용 시트의 레그 레스트 |
| CN113561857A (zh) * | 2021-08-05 | 2021-10-29 | 诺创汽车科技(上海)有限公司 | 推进机构和车辆座椅 |
| CN114506253B (zh) * | 2022-01-21 | 2022-11-04 | 麦格纳座椅研发(重庆)有限公司 | 一种四向无缝式车辆座椅腿部托起装置 |
-
2022
- 2022-06-14 FR FR2205759A patent/FR3136415B1/fr active Active
-
2023
- 2023-06-12 EP EP23732125.2A patent/EP4540101A1/fr active Pending
- 2023-06-12 WO PCT/EP2023/065683 patent/WO2023242134A1/fr not_active Ceased
- 2023-07-21 FR FR2307827A patent/FR3149557A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023242134A1 (fr) | 2023-12-21 |
| FR3136415B1 (fr) | 2024-10-25 |
| FR3136415A1 (fr) | 2023-12-15 |
| FR3149557A1 (fr) | 2024-12-13 |
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Legal Events
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