![]() SLIDERS FOR VEHICLE SEATS, VEHICLE SEAT COMPRISING SUCH A SLIDER
专利摘要:
Slide (5) for a vehicle seat comprising a first profile (6) secured to a chassis (4) of a motor vehicle, comprising a base and two lateral wings, a second section (7) slidably mounted relative to the first section, and a driving mechanism (9) adapted to move the second section relative to the first section, the drive mechanism having a threaded rod (11). The slide has a front support (20) mounted on a side wing of the first section on which is fixed the front end of the threaded rod. 公开号:FR3025756A1 申请号:FR1458587 申请日:2014-09-12 公开日:2016-03-18 发明作者:Christian Couasnon;Sylvain Deschamps 申请人:Faurecia Sieges dAutomobile SA; IPC主号:
专利说明:
[0001] 1 SLIDERS FOR VEHICLE SEATS, VEHICLE SEAT COMPRISING SUCH A SLIDER. The present invention relates to slides 5 for vehicle seats and vehicle seats comprising such slides. More particularly, the invention relates to a slideway for a vehicle seat comprising a first section adapted to be secured to a motor vehicle frame, the first section extending in a longitudinal direction and comprising a base extending in a horizontal plane and two lateral wings disposed on either side of the base with respect to a transverse direction of the horizontal plane perpendicular to the longitudinal direction, a second section slidably mounted relative to the first profile in the longitudinal direction, a longitudinal mechanism, drive adapted to move the second profile relative to the first profile in the longitudinal direction, wherein the drive mechanism comprises a threaded rod extending in the longitudinal direction (X) between a front end and a rear end, the slideway having a front support secured to the first profile and on the Equel is attached to the front end of the threaded rod. WO-A-99/51456 describes an example of such a slide. However, there is a need to allow a user to move the seat a greater distance from the vehicle frame, in order to increase the range of adjustment of the seat and therefore the comfort of the user. The present invention is intended in particular to improve the situation. For this purpose, according to the invention, a slide of the kind in question is characterized in that the front support extends from at least one lateral wing of the first section. Thanks to these arrangements, the front fastening of the threaded rod can be arranged at the front of the first section and it is thus possible to increase the possible displacement distance of the second profile with respect to the first profile. The travel distance of the seat relative to the floor of the vehicle in the longitudinal direction can thus be increased. In addition, it avoids the presence of overflow portions on the underside of the profile attached to the frame which facilitates the integration of the seat in the motor vehicle. In preferred embodiments of the invention, one or more of the following arrangements may also be used: the front support is mounted on, or integrated with, the at least one lateral wing; the front support has a first substantially flat portion, a second substantially flat portion and a bend connecting the first portion to the second portion so that the first portion is substantially perpendicular to the second portion; the first portion of the front support is integral with a lateral wing of the first section and the front end of the threaded rod is fixed on the second portion of the front support; - The first portion of the front support is secured to said lateral flange of the first section at at least two securing locations spaced in the longitudinal direction, in particular by means of at least two securing elements respectively disposed at said securing locations; - The slide further comprises a rear support 35 secured to the base of the first section and accommodating 3025756 3 the rear end of the threaded rod; - The front end of the threaded rod is screwed onto the front support and the rear end of the threaded rod is fixedly secured to the rear support, in particular by compression between two wings of said rear support; - The slide further comprises a front fastening means of the first section to a motor vehicle frame, mounted on the base of the first section, and the front support is mounted on a side wing of the first section, so as to be disposed substantially in view of the securing means before, in the transverse direction; - The slide is adapted to be in contact with the motor vehicle frame at a lower face of the base of the first section between a front fastening means of the first section to a motor vehicle frame and a fastening means rear of the first section to a motor vehicle frame, and the slide has no parts in the lower edge relative to said lower face between said front fixing means and said rear fixing means. The invention also relates to a vehicle seat comprising a seat carried by at least one slide as described above. Other features and advantages of the invention will become apparent from the following description of one of its embodiments, given by way of non-limiting example, with reference to the accompanying drawings. In the drawings: FIG. 1 is a diagrammatic view of a vehicle seat according to an embodiment of the invention mounted on a motor vehicle, FIG. 2A illustrates in longitudinal section a slideway according to an embodiment of the invention. embodiment of the invention; FIG. 2B illustrates in cross-section the slide of FIG. 2A; FIG. 3 is a perspective view of a longitudinal section of the front end of the slide of FIGS. 2A and 2B; and - Figure 4 is a perspective view of a longitudinal section of the rear end of the slide of Figures 2A and 2B. In the different figures, the same references denote identical or similar elements. DETAILED DESCRIPTION OF THE INVENTION For the sake of clarity, only the elements useful for understanding the described embodiments have been shown and will be detailed. Naturally, the invention is not limited to the embodiment described by way of nonlimiting illustration. In the description which follows, when reference is made to absolute position qualifiers, such as the terms 'forward', 'backward', 'up', 'down', 'left', 'right', etc., or relative, such as the terms 'above', 'below', 'above', 'below', etc., or with qualifiers for orientation, reference is made to a seat in a normal position of use of that in the direction of ordinary progression of the vehicle. [0002] Thus, Figure 1 shows a motor vehicle seat 1 which comprises a backrest 2 carried by a seat 3 itself slidably mounted on a floor 4 of the vehicle in a substantially horizontal longitudinal direction X. The seat 3 is connected to the floor 4 by two parallel runners 5, only one of which is visible in FIG. 1. As shown in FIGS. 2A and 2B, the runners 5 comprise a first profile 6 and a second profile 7. , respectively connected to the floor 4 and the seat 3, which slide on one another in the longitudinal direction X. The adjustment of the slides 5 is advantageously motorized, and controlled for example by means of a push button 8 (illustrated in FIG. 1) which controls the operation of a drive mechanism 9 adapted to move the second profile relative to the first profile in the longitudinal direction X. As illustrated in FIG. 2A, the drive mechanism 9 comprises for example a rotary nut device 10 carried by the second section 7 of the slide 5 and controlled by an electric motor (not shown). This rotary nut device 10 is screwed onto a threaded rod 11 carried by the first profile 6 and extending in the longitudinal direction X. [0003] The first section 6 extends in the longitudinal direction X between a front end 6a and a rear end 6b. As can be seen in FIG. 2A, the first profile 6 may have, for example, a substantially U-shaped section 25. Thus, the first profile 6 comprises a base 12 extending along a horizontal plane X, Y, and which extends more particularly in length in the longitudinal direction X and in width in a transverse direction Y perpendicular to the direction X. The transverse direction Y and the longitudinal direction X may for example belong substantially to a horizontal plane of extension of the floor 4 of the vehicle. The base 12 of the first section 6 may be adapted to be in contact with the motor vehicle frame as illustrated in FIG. 1. More particularly, the base 12 may be adapted to be in contact with the motor vehicle frame at the location of a lower face 29 of the base 12. And in particular between a front fastening means 27 of the first profile 6 to the frame 4 and a rear fastening means 28 5 of the first profile 6 to the frame 4, as detailed herein. -after. The first profile 6 may further comprise two lateral wings 13a, 13b respectively extending upwards, in particular extending substantially in a first vertical plane X, Z perpendicular to the horizontal plane X, Y. In the present description, a The lateral wing of the first section is generically designated by the numeral 13. By "the lateral wings extend substantially in a vertical plane", it is meant in particular that the lateral wings 13 may not be strictly perpendicular to the horizontal plane X , Y but generally have a non-zero angle with said horizontal plane X, Y, as for example illustrated by the lateral flange 13b of FIG. 2B, for example an angle of between 45 ° and 135 °. The lateral wings 13 are arranged on either side of the base 12 in the transverse direction Y. Each lateral wing 13 extends to an upper end which is extended, at an angle towards the outside and towards the top by a reentrant trough 14. The second profile 7, meanwhile also has a substantially U-shaped including a base 15, substantially horizontal, parallel to the horizontal plane X, Y 30 and two lateral wings 16 extending substantially towards the low, in particular substantially in the first vertical plane X, Z and which are extended at their lower end, obliquely outwards and upwards, by flaps 17 respectively enclosed by the reentrant troughs 14 of the first profile 6. Here also, "the lateral wings extend substantially in a vertical plane" means in particular 3025756 7 that the lateral wings 16 may not be strictly perpendicular to the horizontal plane X, Y may s generally have a non-zero angle with said horizontal plane X, Y. [0004] Referring now also to FIGS. 3 and 4, the threaded rod 11 extends more precisely along the longitudinal direction X between a front end 18 and a rear end 19. [0005] In addition, the slide 5 includes a front support 20 (shown in FIG. 3) and a rear support 21 (shown in FIG. 4). The front and rear supports 21 are integral with the first profile 6. [0006] The front support 20 advantageously extends from at least one side wing 13 of the first section 6. In an alternative embodiment not shown in the figures, the front support 20 can extend from the two lateral wings. 13 of the first profile 6. Moreover, as can be seen in the embodiment of the figures, the front support 20 can in particular extend only from a lateral wing of the first profile. The front support can also extend only from the two side wings of the first section. By only from a side wing of the first profile, or only from the two lateral wings of the first profile, is meant in particular that the front support 30 is not mounted or integrated on the base 12 of the first section, or is not in contact with the base 12 of the first section 6. In one embodiment, the front support 20 can be mounted on the lateral flange 13 of the first profile 6, for example by force or via securing elements as described below. The front support 20 can also be integrated on the lateral flange 13 of the first section 6, that is to say, for example machined or cold-stamped in the material of the first section 6. This embodiment has the following features: advantage of a superior hold. [0007] The front support 20 may be composed of a machined or cold-stamped block or a shaped plate. Referring to FIG. 3 illustrating an embodiment of the front support 20, the latter can thus have: a first portion 22 substantially flat and extending substantially along the first vertical plane of extension X, Z, in particular the plane of the lateral wings 13; - A second portion 23 also substantially flat and extending substantially along a second vertical plane Y, Z, substantially perpendicular to the first vertical plane X, Z and the horizontal plane X, Y of the base 12; and - a bend 24 connecting the first portion 22 to the second portion 23, so that the first portion 22 is substantially perpendicular to the second portion 23. Thus, the first portion 22 of the front support 20 may be more particularly secured of the lateral wing 13a of the first section 6. [0008] Furthermore, the front end 18 of the threaded rod 11 can be fixed on the second portion 23 of the front support 20. In this way, the front support 20 makes it possible to secure the front end of the threaded rod 11 to the first one. profile 6. As illustrated in FIG. 3, the first portion 23 of the front support 20 may be secured to the lateral flange 13a of the first profile 6 at at least two securing points 25a, 25b, generically designated herein. description, by the reference numeral 25. The first portion 23 of the front support 20 may for example be secured to the side wing 13a by means 3025756 9 of at least two securing elements 26a, 26b respectively disposed at said securing locations 25a, 25b respective. The securing elements 26a, 26b are, for example, nuts, rivets, welding spots or any other known solid fastening device. The securing locations 25a, 25b may advantageously be spaced in the longitudinal direction X. In this way a fixed retention of the front end 18 of the threaded rod 11 is guaranteed. Furthermore, as illustrated in Figures 2 and 3, the slideway 5 may further comprise a front fastening means 27 of the first profile 6 to the chassis 4 of the motor vehicle. [0009] The front fixing means 27 is mounted on the base 12 of the first section 6. In particular, the front fixing means 27 is secured to the front end 6a of the first profile 6. The front support 20 can then advantageously be mounted. on the lateral flange 13a of the first section 6 so as to be disposed substantially facing the securing means before 27 in the transverse direction Y. By "the front support is disposed substantially opposite the front fastening means in the transverse direction Is meant that the front support and the front fastening means are disposed substantially at the same location with respect to the longitudinal extension of the first profile 6. The front support and the front fastening means are thus at least partially arranged side by side. coast in a transverse plane Y, Z of the first profile 6, respectively on the base 12 and on a lateral flange 13a of the first profile 6. It is understood if in particular that the front support and the front fastening means are not juxtaposed one behind the other along the longitudinal extension of the first profile 6. [0010] Referring now to FIG. 4, the rear support 21 is integral with the base 12 of the first profile 6. The rear support 21 further accommodates the rear end 19 of the threaded rod 11. [0011] More particularly, in the example of FIG. 4, the rear support 21 comprises a base 30 extending substantially along the horizontal plane X, Y of the base 12 of the first profile 6. The base 30 is in plane contact with the base 12 of the first profile 6 and is secured to said base 12. The rear support 21 further comprises two wings 31 substantially vertical and between which the rear end 19 of the threaded rod 11 is secured in a fixed manner by compression between the wings 31. [0012] Furthermore, as illustrated in Figures 2 and 4, the slideway 5 may further comprise a rear fastening means 28 of the first section 6 to the frame 4 of the motor vehicle. The rear fixing means 28 is mounted on the base 12 of the first section 6. In particular, the rear fixing means 28 is integral with the rear end 6b of the first profile 6. The rear support 21 can then be advantageously mounted on the base 12 of the first profile 6 by the rear fixing means 28, as illustrated in FIG. 4, in which the rear fixing means 28 is a nut passing through the rear support 21 and the base 12 of the first section, and being received in a housing of the floor 4 of the motor vehicle. [0013] In this way, the slideway 5 does not have any parts in the lower edge with respect to the lower face 29 of the base 12 of the first profile 6 between the front fixing means 27 and the rear fixing means 28. 35
权利要求:
Claims (10) [0001] REVENDICATIONS1. Slide (5) for a vehicle seat comprising - a first section (6) adapted to be secured to a chassis (4) of a motor vehicle, the first section extending in a longitudinal direction (X) and comprising a base (12) extending in a horizontal plane (X, Y) and two lateral wings (13) disposed on either side of the base relative to a transverse direction (Y) of the horizontal plane (X, Y) perpendicular to the direction longitudinal (X), - a second section (7) slidably mounted relative to the first section in the longitudinal direction (X), - a drive mechanism (9) adapted to move the second section relative to the first section in the direction longitudinal axis (X), wherein the drive mechanism comprises a threaded rod (11) extending in the longitudinal direction (X) between a front end (18) and a rear end (19), the slide having a front support (20) in solidarity with first section and on which is fixed the front end of the threaded rod, characterized in that the front support extends from at least one side wing of the first section. [0002] 2. Slide according to the preceding claim, wherein the front support is mounted on, or integrated with, said at least one side wing. [0003] 3. Slide according to claim 1 or 2, wherein the front support (20) has a first portion (22) substantially flat, a second portion (23) substantially planar and a bend (24) connecting the first portion to the second portion so that the first portion is substantially perpendicular to the second portion. [0004] 4. Slide according to the preceding claim, wherein the first portion (22) of the front support 5 (20) is integral with a lateral flange (13) of the first section (6) and wherein the front end (18) of the threaded rod (11) is fixed to the second portion (23) of the front support. [0005] 5. Slide according to the preceding claim, 10 wherein the first portion (22) of the front support (20) is secured to said lateral flange (13) of the first profile (6) at at least two securing locations (25) spaced according to the longitudinal direction (X), in particular by means of at least two securing elements (26) respectively arranged at said securing locations. [0006] 6. Slide according to any one of the preceding claims, further comprising a rear support (21) integral with the base (12) of the first section (6) and accommodating the rear end (19) of the threaded rod (11). ). [0007] A slide as claimed in any one of the preceding claims, wherein the front end (18) of the threaded rod (11) is screwed onto the front support (20) and wherein the rear end (19) of the threaded rod (11) is fixedly secured to the rear support (21), in particular by compression between two wings (31) of said rear support. [0008] 8. Slide according to any one of the preceding claims, further comprising a front fixing means (27) of the first section (6) to a chassis (4) of a motor vehicle, mounted on the base (12) of the first section, and in which the front support (20) is mounted on a lateral flange (13) of the first section, so as to be disposed substantially facing the securing means before, in the transverse direction (Y). [0009] 9. Slide according to any one of the preceding claims, wherein the slide (5) 5 is adapted to be in contact with the chassis (4) of a motor vehicle at a location of a lower face (29) of the base (12) of the first profile (6) between a front fastening means (27) of the first section to a motor vehicle frame and a rear fastening means (28) of the first section to a motor vehicle frame, and wherein the slideway does not have portions of lower edge with respect to said lower face between said front fixing means and said rear fixing means. 15 [0010] 10. Vehicle seat comprising a seat (3) carried by at least one slide (5) according to any one of the preceding claims.
类似技术:
公开号 | 公开日 | 专利标题 FR3025756A1|2016-03-18|SLIDERS FOR VEHICLE SEATS, VEHICLE SEAT COMPRISING SUCH A SLIDER EP1544035B1|2006-08-23|Vehicle body front portion assembly with improved fastening and position adjusting means, and vehicle provided with such an assembly EP1623879B1|2008-02-27|Front end module of motor vehicle FR2857645A1|2005-01-21|Automobile headlamp unit comprises headlamp with lower face and headlamp support having body receiving and supporting part of headlamp lower face FR2959969A1|2011-11-18|SLIDE FOR VEHICLE SEAT AND VEHICLE SEAT COMPRISING SUCH A SLIDER FR2872747A1|2006-01-13|Slide for motor vehicle seat, has adjustment mechanism comprising damping unit interposed between projecting part of nut system and housing of movable rail to prohibit rotation of system around fixed screw and absorb vibration of system FR2981318A1|2013-04-19|PROJECTOR SUPPORT FOR MOTOR VEHICLE AND CORRESPONDING PROJECTOR FR2921022A1|2009-03-20|Adjustment mechanism for motor vehicle seat's slide, has connection units connecting housing parts with each other, where connection units exert prestress on flanges by projecting flanges resiliently towards nut in longitudinal direction EP1574422A1|2005-09-14|Cross beam of a vehicle and vehicle provided therewith EP3126209B1|2018-05-02|Reinforced vehicle structure FR2796013A1|2001-01-12|Adjustment mechanism for vehicle seat runner comprises endless screw mounted in nut housed in support, transverse plugs interposed between nut and support FR2895330A1|2007-06-29|Sliding rail mounting system for car seats comprises floor rail and seat rail which can slide along it, ball bearings being mounted in two rows in cages between the rails and stops in walls of floor rail limiting movement of cages WO2013068674A1|2013-05-16|Improved articulation device for articulating a motor vehicle seat backrest and associated vehicle seat EP1911624A2|2008-04-16|System for removable assembly of a first element on a second element, in particular for a rear seat of an automobile FR3071785B1|2019-09-20|SEAT STRUCTURE OF A MOTOR VEHICLE WITH A CLAMP FOR HOLDING A COVER. EP1610005B1|2008-03-26|Clip for the attachment of a screw to parts of an automobile EP2116446B1|2011-02-16|Support for fixing an element for covering part of the body of a vehicle, corresponding covering element and use of such a fixing support FR3040021A1|2017-02-17|SEAT BACK LATCH INTERFACE FR3092541A1|2020-08-14|Motor vehicle comprising a sole with an elastic member between the roof and a roof bar support EP1934081B1|2010-03-17|Cover for a steering column FR2806678A1|2001-09-28|Headrest has an internal structure pivoting on thetop end of the rigid rod from the back seat and a resisting element exerting a higher resisting torque when the headrest is forced backwards than when it is forced forwards FR3025757A1|2016-03-18|VEHICLE SEAT AND METHOD FOR MANUFACTURING SUCH A SEAT FR3007334A1|2014-12-26|DEVICE FOR FASTENING A TANK ON A MOTOR VEHICLE FR3104509A1|2021-06-18|Motor vehicle comprising a bumper frame FR3017080A1|2015-08-07|REAR SEAT BACK FOLDER LIMITER OF A MOTOR VEHICLE
同族专利:
公开号 | 公开日 CN105416103A|2016-03-23| US9561740B2|2017-02-07| FR3025756B1|2018-03-16| CN105416103B|2018-01-19| US20160075259A1|2016-03-17|
引用文献:
公开号 | 申请日 | 公开日 | 申请人 | 专利标题 DE19544376A1|1995-11-29|1997-07-17|Johnson Controls Naue Engineer|Vehicle seat adjustment and locking device| JPH1128954A|1997-07-08|1999-02-02|Tachi S Co Ltd|Feeding structure for slide seat| FR2798098A1|1999-09-03|2001-03-09|Renault|Seat mechanism, for vehicle, has mounting feet, to provide horizontal and vertical sliding, with common mechanism, such that horizontal movement produces corresponding vertical movement| JP2006069251A|2004-08-31|2006-03-16|Tachi S Co Ltd|Lead screw mounting structure of vehicular power slide device| WO2012008661A1|2010-07-12|2012-01-19|Km&I. Co., Ltd.|Gearbox of power seat track for motor vehicle and assembly method of the same| WO2012093002A1|2011-01-04|2012-07-12|C. Rob Hammerstein Gmbh & Co. Kg|Seat rail for a motor vehicle seat|FR3106538A1|2020-01-29|2021-07-30|Faurecia Sièges d'Automobile|Vehicle seat slide attachment|DE19861276B4|1998-04-06|2007-12-20|Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg|Spindle or worm drive for adjusting devices in motor vehicles| JP4103212B2|1998-11-26|2008-06-18|アイシン精機株式会社|Power seat slide device for vehicle| FR2910393B1|2006-12-20|2009-08-07|Faurecia Sieges Automobile|SLIDER FOR A VEHICLE SEAT, SLIDER SYSTEM, SEAT COMPRISING SUCH A SLIDER AND A SEAT COMPRISING SUCH A SYSTEM| FR2924646B1|2007-12-11|2010-09-24|Faurecia Sieges Automobile|SLIDER ASSEMBLY, SEAT COMPRISING SUCH A SLIDER ASSEMBLY AND SUPPORT MEMBER FOR SUCH A SLIDER ASSEMBLY| JP5465868B2|2008-11-28|2014-04-09|デルタ工業株式会社|Seat slide structure| EP2305512B1|2009-10-05|2014-01-01|Delta Kogyo Co., Ltd.|Seat slide structure for vehicle| DE102010001847A1|2010-02-11|2011-08-11|Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Coburg, 96450|Spindle gear with reinforcement| FR2959969B1|2010-05-17|2012-07-20|Faurecia Sieges Automobile|SLIDE FOR VEHICLE SEAT AND VEHICLE SEAT COMPRISING SUCH A SLIDER| DE102011004143A1|2011-02-15|2012-08-16|Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg|Longitudinal adjustment device for locating longitudinally displaceable seat at floor of vehicle, has bracket, which holds rotation of spindle with respect to load on spindle, where another bracket does not hold rotation of spindle| CN201941622U|2011-02-23|2011-08-24|上海延锋江森座椅有限公司|Installation structure for horizontal transmission component of automobile power seat| CN202378724U|2011-11-17|2012-08-15|佛吉亚管理有限公司|Reinforced horizontal driving mechanism used for automobile electric seat|JP2017226356A|2016-06-23|2017-12-28|アイシン精機株式会社|Vehicular seat slide device| FR3068928B1|2017-07-17|2019-08-16|Faurecia Sieges D'automobile|SLIDE FOR VEHICLE SEAT AND VEHICLE SEAT COMPRISING SUCH A SLIDER| US10850643B2|2017-09-28|2020-12-01|Norco Industries, Inc.|Sofa base| CN109050354B|2018-08-28|2021-01-05|延锋安道拓座椅机械部件有限公司|Electric sliding rail| JP2020082782A|2018-11-16|2020-06-04|シロキ工業株式会社|Slide device|
法律状态:
2015-08-27| PLFP| Fee payment|Year of fee payment: 2 | 2016-03-18| PLSC| Publication of the preliminary search report|Effective date: 20160318 | 2016-08-22| PLFP| Fee payment|Year of fee payment: 3 | 2017-08-22| PLFP| Fee payment|Year of fee payment: 4 | 2018-08-22| PLFP| Fee payment|Year of fee payment: 5 | 2019-08-20| PLFP| Fee payment|Year of fee payment: 6 | 2020-08-19| PLFP| Fee payment|Year of fee payment: 7 | 2021-08-19| PLFP| Fee payment|Year of fee payment: 8 |
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申请号 | 申请日 | 专利标题 FR1458587|2014-09-12| FR1458587A|FR3025756B1|2014-09-12|2014-09-12|SLIDERS FOR VEHICLE SEATS, VEHICLE SEAT COMPRISING SUCH A SLIDER|FR1458587A| FR3025756B1|2014-09-12|2014-09-12|SLIDERS FOR VEHICLE SEATS, VEHICLE SEAT COMPRISING SUCH A SLIDER| CN201510572880.4A| CN105416103B|2014-09-12|2015-09-10|Sliding rail for automotive seat and the automotive seat including the track| US14/852,314| US9561740B2|2014-09-12|2015-09-11|Sliding tracks for vehicle seats, vehicle seat comprising such a track| 相关专利
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