• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates mainly to a seat structure comprising a seat frame (3) and a back frame (4) having an upper cross member (5) and being pivotally articulated on the seat frame (3 ) around a first transverse axis (A-A '), which seat frame (3) comprises a seat frame (6) comprising two cross members respectively front (7) and rear (8), said frame seat (3) further comprising a bucket (9) whose front end (10) is pivotally mounted on the front crossmember (7) of the seat frame (6) around a second transverse axis (B-B '), the seat structure (1) further comprising suspension means (11) connecting the back frame (4) to the rear end of the bucket (9), said suspension means (11) comprising at least an elastic member (16a) and a means for adjusting (13) the return force of the elastic member (16a) integral with the seat structure (1), characterized in that said m adjustment means (13) comprises a motor (14) of which a transmission member (15) is connected to the elastic member (16a).
    公开号:FR3086603A1
    申请号:FR1859041
    申请日:2018-09-28
    公开日:2020-04-03
    发明作者:Frederic Bertin；Jean Marc ALLEGRE；Laurent Bauvineau；Jean Pierre Gauthier；Vincent Hernette；Jean Marc Judic；Jerome Planson
    申请人:Faurecia Sieges dAutomobile SA；PSA Automobiles SA；
    IPC主号:
    专利说明:

    Vehicle seat structure comprising adjustable suspension means.
    The invention relates generally to a seat structure for a vehicle, especially an automobile.
    The invention relates more particularly to a seat structure provided with adjustable suspension means.
    The invention also relates to a motor vehicle equipped with such a seat structure.
    During the rolling phase of a vehicle, the roughness of the road generates vibrations which partially affect the seats and impact the comfort level of the vehicle occupants.
    In order to limit these vibrations, it is known to provide suspension devices at the level of the seats.
    It is known from the state of the art American patent application US 5,601,338 which discloses a seat structure comprising a back frame pivotally pivoted about a first transverse axis on a seat frame, the frame of seat comprising a seat frame comprising two lateral flanks and two cross members respectively front and rear.
    The seat structure further comprises a suspended bucket, pivotally mounted along a second transverse axis on the front crossmember of the seat frame, to allow the rear portion of this bucket to be vertically movable relative to the rear crossmember of the seat frame.
    The seat structure further comprises suspension means comprising springs respectively connected to the back frame and to a pivoting structure integral with the bucket.
    The suspension means also comprise manual adjustment means making it possible to vary the return force exerted by the two springs on the rear part of the bucket. This allows the rigidity of the seat suspension to be changed at leisure.
    Given the structure of the adjustment means, it is difficult for the driver or any other occupant of the vehicle to access these means and to precisely adjust the rigidity of the suspension of the seat.
    In this context, the present invention therefore aims to overcome this drawback.
    To this end, the seat structure of the invention comprises a seat frame and a back frame provided with an upper cross member and being pivotally articulated on the seat frame around a first transverse axis, which seat frame comprises a seat frame comprising two cross members respectively front and rear, said seat frame further comprising a bucket whose front end is pivotally mounted on the front cross member of the seat frame around a second transverse axis, the seat structure further comprising suspension means connecting the back frame to the rear end of the bucket, said suspension means comprising at least one elastic member and means for adjusting the return force of the elastic member secured to the seat structure, said adjusting means comprising a motor, a transmission member of which is connected to the elastic member.
    The seat structure of the invention can also include the following optional features, considered in isolation or in all possible technical combinations:
    the transmission member is a rod movable in translation in a longitudinal direction of the backrest frame.
    the adjustment means comprises two elastic members formed by springs extending symmetrically with respect to the median plane of the backrest frame along respective axes perpendicular to the first transverse pivot axis.
    the lower end of each spring is connected to the rear end of the bucket by means of a first flexible link, and in that the upper end of each spring is connected to the free end of the rod movable by the through a second flexible link, the first and second flexible links being for example straps.
    each second flexible link extends from the upper end of the spring in question to the free end of the rod, passing successively:
    • through a first lateral ring, respectively left or right, integral with the upper crossmember of the backrest frame, and • through a central ring secured with a lower crossmember of the backrest frame, it being understood that the two second flexible links pass through this central ring.
    the adjustment means is integral with a plate fixed to the upper cross member of the backrest frame.
    the adjusting means is arranged under the seat frame, the respective upper ends of the springs are connected to the upper cross member, and the respective lower ends of the springs are connected to the free end of the movable rod by means of two respective flexible links.
    the motor of the adjusting means is manually controllable.
    the motor of the adjustment means can be controlled by a computer connected to a seat pan sensor integrated in the latter.
    The invention also relates to a vehicle seat comprising a seat structure as described above.
    Finally, the invention also relates to a motor vehicle of such a seat.
    Other characteristics and advantages of the invention will emerge clearly from the description which is given below, for information and in no way limitative, with reference to the appended figures among which:
    FIG. 1 is a perspective view from three front quarters of a seat structure according to a first embodiment of the invention,
    FIG. 2 is a perspective view of three rear quarters of the seat structure of FIG. 1,
    - Figure 3 is a perspective view from behind of a seat structure according to a second embodiment of the invention.
    Figures 1 to 3 show a 1.1 ’seat structure of a vehicle, this structure equipping at least one vehicle seat, preferably a front seat.
    According to a first embodiment and with reference to Figures 1 and 2, the seat structure 1 comprises, in a conventional manner, a seat frame 3 and a back frame 4 hinged to pivot about a first transverse axis A- A 'located at the rear of the seat frame 3, between a raised position capable of receiving the back of a user and a folded position allowing easy access to the rear seats of the vehicle.
    By convention, the terms front, rear, longitudinal and transverse are defined relative to the mounting position of the seat structure 1 in the vehicle.
    The backrest frame 4 comprises two lateral uprights 26a, 26b arranged symmetrically opposite one another and between which extend an upper cross member 5 and a lower cross member 23.
    The seat frame 3 comprises a rigid seat frame 6 comprising two lateral flanks 27a, 27b, a rear cross member 8 formed by a rear crossbar extending between the two rear ends of the flanks 27a, 27b, and a front cross member 7 extending between the two front ends of said sides 27a, 27b.
    The seat frame 6 is slidably mounted on the floor 2 of the vehicle by means of two pairs of front and rear link rods 29 mounted articulated between the lateral flanks 27a, 27b and two pairs of front legs 30 and rear 31, each pair of front 30 and rear 31 feet being integral with a movable rail 32 capable of sliding along a fixed rail 33 secured to the floor 2 of the vehicle.
    The seat frame 6 also includes a rigid bucket 9 intended to support most of the load of the occupant sitting on the seat.
    The bucket 9, preferably obtained from a cut and folded metal sheet, has a transverse front portion 18 inclined and disposed on the front cross member 7 of the seat frame 6, the front end 10 of this portion 18 being mounted pivoting on said front cross member 7 of the seat frame 6 about a second transverse axis B-B '.
    The bucket 9 further comprises two lateral flanks 34a, 34b substantially perpendicular to the two respective lateral flanks 27a, 27b of the seat frame 6. The front portion 18 and the two flanks 34a, 34b of the bucket 9 are intended to support most of the mass of the user installed in the seat.
    The bucket 9 comprises a transverse rear part 35, the rear end 36 of which extends under the connecting transverse bar 8 of the seat frame 6. This arrangement of the rear end 36 of the bucket 9 prevents the latter from moving. is not too important. Indeed, the movement of the bucket 9 is limited between a low position of the bucket 9 when its sides 34a, 34b are in abutment against the side blanks 27a, 27b of the seat frame 6, and a high position of the bucket 9 when its end rear 36 is in abutment against the cross bar connecting the seat frame 6. The maximum distance of movement of the bucket 9 is the distance separating the cross bar 8 from the rear end 36 of the bucket 9 when the latter 9 is in its lower position.
    Finally, with reference to FIG. 2, the rear part 35 of the bucket 9 comprises two L-shaped fixing lugs 37a, 37b oriented towards the back frame 4 and extending from the rear end 36 of the bucket 9, and the function of which will be described below. In addition, these fixing lugs 37a, 37b are symmetrical relative to the median plane of the backrest frame 4.
    The seat structure 1 also comprises suspension means 11 connecting the back frame 4 to the rear end 36 of the bucket 9. These suspension means 11 comprise two elastic members formed by two helical traction springs 12a, 12b, extending in the general plane of the back frame 4, symmetrically with respect to the median plane of said back frame 4.
    The suspension means 11 also comprise means 13 for adjusting the return force of the springs 12a, 12b. This adjustment means 13 is integral with a plate 24 fixed to the upper crossmember 5 of the backrest frame 4, so that this adjustment means 13 is arranged at the longitudinal axis of the backrest frame 1 .
    According to the invention, the suspension adjustment means 13 is motorized, and the transmission member of the motor 14, preferably electric, is formed by a rod 15 movable in translation along the longitudinal axis of the backrest frame 4 For example, the movable rod 15 comprises a rack capable of meshing a pinion secured to an output shaft of the motor 14.
    In addition, to allow adjustment of the return force of the springs 12a, 12b, the free end of the movable rod 15 is connected to said springs 12a, 12b.
    This connection of the springs 12a, 12b to the bucket 9 on the one hand and to the backrest frame 4 by means of the rod 15 which can be moved on the other hand in order to ensure the suspension of said bucket 9 in fine, is made possible through first 19a, 19b and second 20a, 20b flexible links, formed for example by straps.
    By convention in the following description and with reference to FIG. 2, the elements situated to the right of the median plane with respect to the seat will bear the epithet "right or right", while the elements situated to the left of the median plane with respect to at the headquarters will carry the epithet "left". Thus we will name the two left spring springs 12a and right spring, and also the two fixing lugs left lug 37a and right lug 37b.
    The lower end 16b of the right spring 12b (respectively lower end 16a of the left spring 12a) is connected to the right fixing lug 37b (respectively left 37a) by means of a first right flexible link 19b (respectively first left flexible link 19a).
    The upper end 17b of the right spring 12b (respectively upper end 17a of the left spring 12a) is connected to the free end of the rod 15 of the adjusting means 13 by means of a second flexible right link 20b (respectively second link flexible left 20a). Preferably, the second flexible links 20a, 20b are connected to the rod 15 by means of a fixing member 25 in the form of a ring.
    In addition, the second flexible right link 20b (respectively left 20a) extends from the upper end 17b of the right spring 12b (respectively upper end 17a of the left spring 12a) to the fixing member 25 of the movable rod 15 passing successively:
    • through a first right lateral ring 21b (respectively left 21a) secured to the upper cross member 5 of the back frame 4, and • through a central ring 22 secured to the lower cross member 23 of the frame file 4.
    The two left lateral rings 21a and right 21b are arranged in the vicinity of the end of the upper crossmember 5, and are symmetrical with respect to the median plane of the backrest frame 4. In addition, the second flexible right links 20b and left 20a both pass through the central ring 22.
    In this way, when the motor 14 of the adjustment means 13 generates the displacement of the rod 15 in the direction of the upper cross member 5 of the backrest frame 4, said rod 15 pulls on the second links 20a, 20b causing an extension of the springs 12a, 12b and in fact an increase in their restoring force. Conversely, when the motor 14 generates the displacement of the rod 15 in the direction of the lower cross member 23 of the backrest frame 4, said rod 15 releases the second links 20a, 20b causing compression of the springs 12a, 12b and in fact a decrease in their restoring force.
    In addition, in this configuration of the suspension means 11, formed by the first and second flexible links 19a, 19b, 20a, 20b, the springs 12a, 12b, the rings and the motorized adjustment means 13, the arrangement in M of the springs 12a, 12b and flexible links 19a, 19b, 20a, 20b makes it possible to distribute the load laterally on the bucket 9, passing only by a single motorized adjustment means 13.
    By allowing the adjustment of the return force of the springs 12a, 12b, the adjustment means 13 makes it possible to adapt the rigidity of the suspension and the position of the bucket 9 as a function of the mass of the occupant of the seat. The higher the restoring force of the springs 12a, 12b, the more rigid the suspension tends to be, and the more the bucket 9 tends to move away from the seat frame 6 towards its high position. Conversely, the weaker the restoring force of the springs 12a, 12b, the more the suspension tends to be flexible, and the more the bucket 9 tends to approach the seat frame 6 towards its low position.
    To allow the occupant of the seat to enjoy the capacities offered by the suspension means 11 of the bucket 9, it is necessary for said bucket 9 to be able to carry out a vertical movement on either side of its position of balance when the occupant is seated in the seat. The ideal equilibrium position is reached when the possible range of travel of the bucket 9 upwards is identical to its range of possible travel downwards. In other words, at the ideal equilibrium position (the occupant being seated on the seat), the distance separating the transverse bar 8 from the rear end 36 of the bucket 9 is equal to half of the maximum travel distance.
    In order to be able to adjust the height of the bucket 9 to its ideal equilibrium position, the occupant manually controls the engine 14 of the adjustment means 13 by means of a button-type command in the passenger compartment of the vehicle.
    Alternatively, the engine 14 can be controlled by a vehicle computer connected to a seat sensor 9 in the bucket integrated therein. In this alternative, the attitude sensor measures at all times the position of the bucket 9 relative to the seat frame 6, and controls the displacement of the rod 15 to adjust the ideal equilibrium position as a function of the mass of the occupant of the seat.
    The suspension system of the invention thus allows easy adjustment of the rigidity of the suspension, and easy placement of the suspended bucket 9 towards its ideal equilibrium position. The occupant of the seat provided with the seat structure 1 of the invention will therefore benefit, whatever its mass, from the optimal capacities offered by the suspension means 11.
    FIG. 3 illustrates a motor vehicle seat 1 ’according to a second preferred embodiment of the invention.
    The seat 1 'of the second embodiment differs from the seat 1 of the first embodiment described above in that the suspension adjustment means 13' comprising the motor 14 'is arranged under the seat frame 3 ', not at the back frame 4'.
    In addition, the cross-member 23 and the fixing lugs 37a, 37b of the first embodiment are replaced by a low cross-member 23 'comprising two fixing lugs 37a', 37b 'symmetrical with respect to the median plane of the backrest frame 4 'and extending substantially in the plane of said backrest 4', in the direction of the upper crosspiece 5 '.
    The upper ends 17a ’, 17b’ of the elastic members 12a ’, 12b’ are connected to the back frame 4 ’, in particular to the upper cross member 5’ of the back frame 4 ’.
    The respective lower ends 16a ′, 16b ′ the elastic members 12a ′, 12b ′ are connected to the free end of the movable rod 15 ′ by means of two respective flexible links 20a ′, 20b ′, the flexible links 20a ′, 20b 'being formed by cables.
    Like the first embodiment, the elastic members 12a ', 12b' in this second embodiment are formed by two helical traction springs extending symmetrically with respect to the median plane of the backrest frame 4 'according to respective axes substantially perpendicular to the first transverse pivot axis A-A '.
    The present invention is not limited to the embodiments described and presented in the figures, but also encompasses all variant embodiments within the reach of the skilled person. By way of example in the first embodiment, the adjustment means 13 can be installed in the vicinity of the lower cross member 23 of the seat structure 1, while remaining disposed at the median plane of the backrest frame 4 .
    权利要求:
    Claims (11)
    [1" id="c-fr-0001]
    1. Seat structure (1, 1d of vehicle comprising a seat frame (3, 3 ') and a back frame (4, 4j provided with an upper crossmember (5, 5') and being pivotally articulated on the seat frame (3, 3 ') around a first transverse axis (A-Aj, which seat frame (3, 3') comprises a seat frame (6) comprising two cross members respectively before ( 7) and rear (8), said seat frame (3) further comprising a bucket (9) whose front end (10) is pivotally mounted on the front crossmember (7) of the seat frame (6 ) around a second transverse axis (B-Bj, the seat structure (1, 1 j further comprising suspension means (11) connecting the back frame (4) to the rear end (36) of the bucket (9, 9d, said suspension means (11) comprising at least one elastic member (12a, 12b; 12a ', 12b j and an adjusting means (13.13d of the restoring force of the elastic member ( 12a, 1 2b; 12a ', 12b') integral with the seat structure (1, 1j, characterized in that said adjustment means (13, 13 ') comprises a motor (14, 14') including a transmission member (15, 15 ') is connected to the elastic member (12a, 12b).
    [2" id="c-fr-0002]
    2. Seat structure (1, 1d according to the preceding claim, characterized in that the transmission member is a rod (15, 15 ') movable in translation in a longitudinal or transverse direction of the backrest frame (4, 4d.
    [3" id="c-fr-0003]
    3. Seat structure (1, 1 j according to claim 1 or 2, characterized in that the adjustment means (13, 13 ') comprises two elastic members formed by springs (12a, 12b; 12a', 12b ') extending symmetrically with respect to the median plane of the backrest frame (4, 4j along respective axes perpendicular to the first transverse pivot axis (A-Aj.
    [4" id="c-fr-0004]
    4. Seat structure (1) according to the preceding claim, characterized in that the lower end (16a, 16b) of each spring (12a, 12b) is connected to the rear end (36) of the bucket (9) by through a first flexible link (19a, 19b), and in that the upper end (17a, 17b) of each spring (12a, 12b) is connected to the free end of the movable rod (15) by through a second flexible link (20a, 20b), the first and second flexible links being, for example, straps.
    [5" id="c-fr-0005]
    5. Seat structure (1) according to the preceding claim, characterized in that each second flexible link (20a, 20b) extends from the upper end (17a, 17b) of the spring considered (12a, 12b) to the free end of the rod (15) passing successively:
    • through a first lateral ring respectively left (21a) or right (21 b) integral with the upper crosspiece (5) of the back frame (4), and • through a central ring (22) secured to a lower cross member (23) of the back frame (4), it being understood that the two second flexible links (20a, 20b) pass through this central ring (22).
    [6" id="c-fr-0006]
    6. Seat structure (1) according to any one of the preceding claims, characterized in that the adjustment means (13) is integral with a plate (24) fixed to the upper crosspiece (5) of the frame. folder (4).
    [7" id="c-fr-0007]
    7. Seat structure (T) according to any one of claims 1 to 3, characterized in that the adjustment means (13 ') is arranged under the seat frame (3'), in that the ends respective upper ends (17a ', 17b') of the springs (12a ', 12b') are connected to the upper crossmember (5 '), and in that the respective lower ends (16a', 16b ') of the springs (12a', 12b ') are connected to the free end of the movable rod (15') by means of two respective flexible links (20a ', 20b').
    [8" id="c-fr-0008]
    8. Seat structure (1, T) according to any one of the preceding claims, characterized in that the motor (14, 14 ’) of the adjustment means (13, 13’) is manually controllable.
    [9" id="c-fr-0009]
    9. Seat structure (1, T) according to any one of claims 1 to 7, characterized in that the motor (14, 14 ') of the adjustment means (13, 13') is controllable by a computer connected to a bucket attitude sensor (9, 9 ') integrated into the latter.
    [10" id="c-fr-0010]
    10. Vehicle seat comprising a structure (1, T) according to any one of claims 1 to 9.
    [11" id="c-fr-0011]
    11. Motor vehicle comprising at least one seat according to claim 10.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP2091778B1|2013-04-17|Headrest for the seat of an automotive vehicle and automotive vehicle seat provided with such headrest
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    FR2693157A1|1994-01-07|Improvements to devices for locking adjustable components in position of vehicle seats during impacts.
    FR2561182A1|1985-09-20|Adjustable vehicle seat
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    FR2571004A1|1986-04-04|WEIGHT COMPENSATOR FOR SEAT SUSPENSION
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    FR2576256A1|1986-07-25|Adjustable seat comprising an articulated foot rest especially for motor vehicles
    FR2585641A1|1987-02-06|Adjustable seat for motor vehicles
    EP1396379A1|2004-03-10|Folding seat having support stops for the use position of the seat
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    FR3036365A1|2016-11-25|LONGITUDINALLY AND HEIGHT ADJUSTING BACKREST FOR NARROW MOTOR VEHICLE
    FR2560757A1|1985-09-13|Seat with articulated backrest framework
    FR3058952A1|2018-05-25|SUSPENSION DEVICE FOR SEAT FRAME FOR MOTOR VEHICLE SEAT
    FR3086604A1|2020-04-03|MOTOR VEHICLE SEAT WITH SUSPENDED SEAT SHELL
    EP2868519B1|2015-11-04|Stowable anti-spill seat
    同族专利:
    公开号 | 公开日
    FR3086603B1|2020-10-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5601338A|1995-03-23|1997-02-11|Michigan Seat Company|Seat structure with adjustable suspension|
    CN203864497U|2014-03-11|2014-10-08|郑州宇通客车股份有限公司|Seat shock absorption mechanism and seat using seat shock absorption mechanism|US11084403B1|2020-01-31|2021-08-10|Toyota Motor Engineering & Manufacturing North America, Inc.|Kinetic seat backs for vehicles|
    US11180060B2|2020-01-31|2021-11-23|Toyota Motor Engineering & Manufacturing North America, Inc.|Kinetic seat assemblies for vehicles|
    法律状态:
    2019-08-20| PLFP| Fee payment|Year of fee payment: 2 |
    2020-04-03| PLSC| Search report ready|Effective date: 20200403 |
    2020-08-19| PLFP| Fee payment|Year of fee payment: 3 |
    2021-08-19| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1859041A|FR3086603B1|2018-09-28|2018-09-28|VEHICLE SEAT STRUCTURE INCLUDING ADJUSTABLE SUSPENSION MEANS.|FR1859041A| FR3086603B1|2018-09-28|2018-09-28|VEHICLE SEAT STRUCTURE INCLUDING ADJUSTABLE SUSPENSION MEANS.|
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