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CN101234611A - 机动车座椅的带有具有两个侧部件的座椅托架的座椅框架 - Google Patents

机动车座椅的带有具有两个侧部件的座椅托架的座椅框架 Download PDF

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CN101234611A
CN101234611A CNA2008100054311A CN200810005431A CN101234611A CN 101234611 A CN101234611 A CN 101234611A CN A2008100054311 A CNA2008100054311 A CN A2008100054311A CN 200810005431 A CN200810005431 A CN 200810005431A CN 101234611 A CN101234611 A CN 101234611A
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B·贝克
W·本内克尔
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Johnson Controls Metals and Mechanisms GmbH and Co KG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/18—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other
    • B60N2/185—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other characterised by the drive mechanism
    • B60N2/1853—Linear actuator, e.g. screw mechanism

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Abstract

本发明涉及一种机动车座椅的座椅框架，该座椅框架带有具有两个侧部件(26、28)的座椅托架，这两个侧部件被定向成横向于前轴线(30)和后轴线(32)，枢转桥接件(34)绕所述轴线(30、32)中的至少一根枢转，所述桥接件包括系杆(36)和两个侧臂(38、40)，所述座椅框架还带有调整装置，该调整装置具有电机驱动的驱动单元(52)。所述驱动单元(52)设置成绕铰轴(54)枢转，该铰轴的中心基本上位于两根轴线(30、32)中所述枢转桥接件(34)绕其枢转的那根轴线上。所述铰轴(54)比所述两个座椅部件(26、28)之间的距离短，且不与所述两个座椅部件(26、28)相接触，但是假如接触的话则只与一个侧部件(26、28)相接触。设有至少一个内臂，该内臂将所述系杆(36)连接至所述铰轴(54)且邻近所述驱动单元(52)定位。

Description

机动车座椅的带有具有两个侧部件的座椅托架的座椅框架
技术领域
本发明涉及机动车座椅的带有具有两个侧部件的座椅托架的座椅框架，这两个侧部件相对于彼此沿着前轴线和后轴线来定向，枢转桥接件绕所述轴线中的至少一根枢转，所述桥接件包括系杆和两个侧臂，该座椅框架还带有第一调整装置，该第一调整装置具有电机驱动的驱动单元。
背景技术
一方面，座椅框架必须具有足够的稳定性，并且就成一体的座椅的质量而言，还能够承受安全带作用力(belt force)，另一方面，座椅框架应尽可能地具有最小尺寸并给附加设备部件提供足够的空间。附加的设备部件例如是附加的调整装置、脊柱支承件、按摩功能件(更具体地说是振动功能件)等。
发明内容
此处以上所述类型的座椅框架的特定问题是，第一调整装置的反作用力作用在侧部件上，从而影响至少一个侧部件。该侧部件不仅沿其纵向、即沿着两根轴线的穿刺点的连接线受载，而且沿着y方向受载。侧部件沿y方向变形，它们例如向外或向内凸出。本发明的一目标是设计一种座椅框架，在该座椅框架中，至少一个调整装置尽可能实际地将较少的弯曲力矩引入侧部件。本发明的另一目标是，采用比以前好的座椅框架牢固部件(solid component)，例如枢转桥接件，以实现整个座椅框架的稳定性，并由此赋予这些部件它们至今还没有过的功能。
因此，本发明的目的是进一步开发以上这里所述类型的座椅框架，从而第一调整装置的反作用力在侧部件中所引起的可能的弯曲力矩最少，此外，相比以前可在侧部件之间获得更多用于其它部件的空间。
对于以上所述类型的座椅框架，该目的通过如下方式解决：驱动单元设置成绕铰轴枢转，该铰轴的中心基本上位于两根轴线中的一根上，所述铰轴比所述两个座椅部件之间的距离短，且不与两个座椅部件相接触，但是假如接触的话则只与一个侧部件相接触，并且设有至少一个内臂，该内臂将系杆连接至铰轴且邻近驱动单元定位。
在该座椅框架上，铰轴并不从一个侧部件延伸至另一个侧部件，而是只在相应轴线(即，前轴线或后轴线)长度的一部分上延伸。结果，在铰轴和两个侧部件中的一个之间存在自由空间。该自由空间可以用于其它部件。
铰轴、内臂、系杆的一部分、以及另一内臂或两个侧臂中的一个形成牢固的支承四连杆机构。所述四连杆机构承受驱动单元的拉伸力或压缩力。结果，侧部件基本上被拉力或压力偏置。可防止铰轴相对于侧部件枢转。无论系杆的用途如何，其自身必须有高刚度，该系杆的高刚度可有利地用于第一调整装置的调整力。
较佳的是，铰轴绕轴线中它所关联的相应一根(即，绕前轴线或后轴线)精确地枢转。结果，枢转桥接件的相应枢转位置并不影响驱动单元的位置。因此，枢转桥接件的调整不会影响第一调整装置的调整。然而，假如铰轴的中心不位于轴线中的相应一根上，则可能将枢转桥接件的调整与第一调整装置联系起来。然后，枢转桥接件的调整或多或少地会影响与第一调整装置相关联的座椅部件的位置。
较佳的是，第一调整装置是座椅的高度调整装置或用于调整靠背倾斜度的调整装置。
附图说明
一旦参照附图、借助示例阅读了所附的权利要求书和下面本发明实施例的非限制性描述，其它特征和优点将会变得更加显而易见。在所述附图中：
图1是座椅框架的立体图，其中省略了座椅座垫；以及
图2是处于第二构造的座椅框架沿z方向的俯视图，但现在没有示出底架和靠背。
具体实施方式
在已知的方式中，图1的座椅框架具有：带有左轨道对和右轨道对20的底架，前面的左和右枢转支承件22以及后面的左和右枢转支承件24。这些枢转支承件22、24承载了在其上枢轴连接的座椅托架，所述座椅托架具有两个侧部件，即左侧部件26和右侧部件28。在这两个侧部件26、28之间，延伸着前轴线30和后轴线32。侧部件26、28基本上沿x方向延伸。它们是形成为例如桶状的冲压钢板部件。
枢转桥接件34适于绕前轴线30枢转；它具有管状的系杆36、左侧臂38和右侧臂40。所述臂在铰接区域连接至两个侧部件26、28，以便绕前轴线30枢转。在座椅框架的后区域中设有横向管子42，该横向管子42的中心设置在后轴线32上且绕该后轴线32枢转。该横向管子42牢固地连接至两个后枢转支承件24。右后枢转支承件24具有突出部44。所述突出部属于第一调整装置。在所述突出部44上枢轴连接有轴螺母46的固定装置，该轴螺母46与轴48啮合。所述轴由齿轮电动机50来转动，该齿轮电动机50包括其上带有用法兰连接的减速齿轮的电动机。固定装置、轴螺母46、轴48和齿轮电动机50形成驱动单元52。所述驱动单元绕铰轴54枢转，该铰轴54的中心位于前轴线30上；具体地说，齿轮箱绕所述铰轴54枢转或与所述铰轴54一起绕轴线30枢转。在后端，驱动单元52铰接至突出部44。在已知的方式中，这两个铰接点之间的距离可以通过使电动机工作来变化。在所示的实施例中，两个后枢转支承件24的角度位置因此改变，两个前枢转支承件22也发生改变。因此，可调整座椅底座的高度。
铰轴54仅仅在前轴线30长度的较短部分上延伸，例如小于所述长度的一半、较佳地小于三分之一。该铰轴54从右侧部件26突出且与其铰接地或固定地连接。在铰轴自由端和左侧部件26之间存在一自由空间56，该自由空间56可以用于例如驱动单元的电动机50之类的部件。
齿轮电动机52的齿轮紧邻右侧臂40定位。在另一侧的相同距离处，定位有内臂58，在这里所示的示例性实施例中，该内臂58与两个相同构造的侧臂38、40也相同地构造。不过，它们不是必需相同地构造。右侧臂40和内臂58之间的净距离几乎不大于齿轮电动机50的相应尺寸，例如只大几毫米。两个臂40、58与系杆36的一部分和铰轴54一起形成支承四连杆机构。为了增强其稳定性，有利的是，使两个臂40、58牢固地连接至铰轴54。通过内臂58可以将铰轴54也支承在其内端处。结果，这比没有这种邻接系杆36的内臂58的情况固定得更好。因此，可以避免可能会引入相关的侧部件36的弯曲力矩。
如图1所示，将由点划线画出且承载座椅底座62的前部的支承件60连接至系杆36。座椅底座的后部搁置在横向管子42上。座椅底座的高度调整可通过枢转桥接件34在给定角度范围内的枢转运动来实现，该高度调整与用手或电动机驱动的调整装置相联，该调整装置未在这里示出且可从现有技术中知道。枢转桥接件34的调整对于电机驱动的驱动单元52的位置没有影响。通过系杆36，还可将电机驱动的驱动单元52的调整力传递至左侧部件26。
轴48看上去基本平行于细长侧部件26、28而延伸，而在任何情况下它都以＜20°、较佳地＜10°的角度倾斜于细长侧部件。由于这个小角度，侧部件和轨道对20底侧之间的距离也很小，从而座椅具有扁平的结构。
图1的座椅框架还具有靠背64。该靠背64铰接至侧部件26、28。在替代方案中，和后右枢转支承件24一样，靠背64具有向下突出的突出部，在所述的替代方案中，轴螺母46铰接在该突出部处。然后，可以通过电机驱动的驱动单元52来进行靠背64的倾斜度调整。
对于本发明而言典型的是，在至少一个端部区域处，在图1中是前端区域，两个侧部件26、28并不沿着前轴线直接机械连接，而是通过枢转桥接件34来连接；或者，该装置将没有固定。具体地说，图1中座椅结构的左侧臂38将没有侧向固定。
还可理解，在本发明，电机驱动的驱动单元52、较佳地是驱动电动机50的端部区域设置在支承四连杆机构中，该四连杆机构包括两个臂38、40、系杆36的一部分和铰轴54。
在图2所示的实施例中，铰轴54不与两个侧部件26、28中的任何一个相接触。内臂58和附加的内臂66沿着前轴线30的方向从系杆36突出。它们承载铰轴54，该铰轴54连接至它们且该铰轴54的中心位于前轴线30上。或者，枢转桥接件34与图1类似地构造。
在座椅框架的后区域中，两个后臂68不可转动地连接至横向管子42。，横向管子42的转动位置根据角度位置而改变，角度位置则取决于电机驱动的驱动单元52的长度，该机动的驱动单元52装备有轴48。还可相反地设置驱动单元52，即将轴螺母46定位在铰轴54上并将齿轮电动机50设置在靠背上。
两个后臂68与横向管子42的一部分和后枢转轴一起形成第二支承四连杆机构。这样，可防止在后区域中产生横向力，该横向力会在两个侧部件26、28中的至少一个中导致弯曲力矩。

Claims (9)

1.一种机动车座椅的座椅框架，该座椅框架带有具有两个侧部件(26、28)的座椅托架，所述两个侧部件被定向成横向于前轴线(30)和后轴线(32)，枢转桥接件(34)绕所述轴线(30、32)中的至少一根枢转，所述桥接件包括系杆(36)和两个侧臂(38、40)，所述座椅框架还带有调整装置，该调整装置具有电机驱动的驱动单元(52)，其特征在于，
所述驱动单元(52)设置成绕铰轴(54)枢转，该铰轴的中心基本上位于所述两根轴线(30、32)中所述枢转桥接件(34)绕其枢转的那根轴线上，所述铰轴(54)比所述两个座椅部件(26、28)之间的距离短，且不与所述两个座椅部件(26、28)相接触，但是假如接触的话则只与一个侧部件(26、28)相接触，并且设有至少一个内臂，所述内臂将所述系杆(36)连接至所述铰轴(54)且邻近所述驱动单元(52)定位。
2.如权利要求1所述的座椅框架，其特征在于，所述铰轴(54)从一个侧臂(38、40)延伸至所述内臂(58)，所述铰轴(54)的自由长度基本上不长于所述驱动单元(52)的相应长度，在任何情况下都不长于5cm。
3.如权利要求1所述的座椅框架，其特征在于，设有两个内臂(58、66)，所述铰轴(54)在所述两个内臂(58、66)之间延伸，且所述两个内臂(58、66)之间的净距离基本上不大于所述驱动单元(52)的相应距离，在任何情况下都不大于5cm。
4.如权利要求1所述的座椅框架，其特征在于，所述铰轴(54)、内臂(58)、所述系杆(36)、以及附加内臂(66)或侧臂(38、40)形成用于接纳所述驱动单元(52)的支承四连杆机构。
5.如权利要求1所述的座椅框架，其特征在于，设有用于调整所述座椅底座(62)的前边缘的高度的高度调整装置，该高度调整装置包括带有所述系杆(36)的所述枢转桥接件(34)。
6.如权利要求1所述的座椅框架，其特征在于，所述第一调整装置是所述座椅底座(62)的高度调整装置或靠背(64)的倾斜度调整装置。
7.如权利要求1所述的座椅框架，其特征在于，所述第一调整装置包括轴(48)，该轴相对于所述侧部件(26、28)以小于20°、较佳地小于10°的角度倾斜。
8.如权利要求1所述的座椅框架，其特征在于，在所述铰轴(54)和所述两个侧部件(26、28)中的一个之间有自由空间(56)。
9.如权利要求1所述的座椅框架，其特征在于，除了所述第一调整装置之外，还设有至少一个附加的调整装置。
CN2008100054311A 2007-01-31 2008-01-30 机动车座椅的带有具有两个侧部件的座椅托架的座椅框架 Expired - Fee Related CN101234611B (zh)

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