CN1786520A - 丝杆螺母-支承结构 - Google Patents
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Abstract
本发明涉及一种丝杆螺母—支承结构,它包括一具有壁厚(b)的壁(W)和一穿通壁(W)的通孔(WO)、一支承套筒(L),它在留出一间隙(Δ)的情况下以大于壁(W)的厚度(b)的长度(l)沿轴向穿过通孔(WO)并可沿轴向运动地支承在通孔内;该支承结构还具有一丝杆螺母(SM),其端面(SMS)在壁的内侧贴靠在支承套筒(L)的第一端面(S1)上,以及还有一支架(H),它使支承套筒(L)的第二端面(S2)支承在丝杆螺母(SM)上,其中丝杆螺母(SM)受到沿背离壁(W)的方向的弹性作用力。
Description
技术领域
本发明涉及一种丝杆螺母-支承结构,其中丝杆螺母以其端面可绕纵轴线旋转地支承在一壳体的壁内。一通孔穿透此壁,以使在丝杆螺母内并与丝杆螺母啮合的轴穿过此壁和通孔。这里壁是壳体壁,丝杆螺母安装在此壳体内,并且该壳体设计成一丝杆传动装置的传动箱壳体。
背景技术
这种结构的缺点是,通常在丝杠螺母的端面和相邻的壁之间存在一距离,使得丝杆螺母在壳体内沿丝杆螺母的轴向具有不希望的间隙。
发明内容
本发明的目的在于,推荐一种丝杆螺母支承结构,它使得丝杆螺母可以尽可能无间隙地支承在壳体内或壳体的两个壁之间。
这个目的通过具有权利要求1特征的丝杆螺母-支承结构实现。
因此丝杆螺母一支承结构最好具有一有一壁厚和一穿透此壁的通孔的壁、一在轴向留出一间隙的情况下以一大于壁厚的长度穿过通孔并可轴向运动地支承在通孔内的支承套筒、一其端面在壁的内侧贴合在支承套筒的第一端面上的丝杆螺母、和一使支承套筒的第二个端面支承在丝杆螺母上的支架,其中丝杆螺母受到沿背离壁的方向的弹性作用力。按照本发明支承套筒可轴向运动。
优良的结构是从属权利要求的内容。
特别是优选采用这样的丝杆螺母支承结构,在这种结构中在支架和支承套筒的第二端面之间设置一弹性元件,并它将支承套筒朝向丝杆螺母夹紧。
特别是优选选择这样的丝杆螺母支承结构,在这种结构中一弹性元件设置在支承套筒和丝杆螺母之间,并且它将丝杆螺母背离支承套筒夹紧。
特别优选采用其中弹性元件由一弹性体组成的丝杆螺母支承结构。
特别优选采用其中支承套筒端面具有凸缘的丝杆螺母支承结构,其中支承套筒的长度在凸缘之间延伸。
特别优选采用这样的丝杆螺母支承结构,在这种结构中壁是一用来安装丝杆螺母的壳体的壳体壁,支架是一丝杆传动装置支架。
特别优选采用丝杆螺母两端都通过这种结构支承的丝杆螺母支承结构。
特别优选采用这样的丝杆螺母支承结构,在这种结构中支承套筒由两个圆柱形支承套筒元件组成,其中第一个支承套筒元件以其圆柱形外圆周可旋转地支承在第二个支承套筒元件的圆柱形内圆周内。
特别优选采用其中一个或两个支承套筒元件具有一凸缘的丝杆螺母支承结构。
特别优选采用这样一种丝杆螺母支承结构,在这种结构中一用于穿过丝杆轴的丝杆穿通孔穿过由支架、支承套筒和弹性元件组成的结构。
特别优选采用这样的丝杆螺母支承结构,在这种结构中支架由弹性材料组成,支承套筒夹紧在丝杆螺母上。
附图说明
下面借助于附图详细说明本发明的一个实施例。这里从这样的情况出发,即丝杆螺母支承结构优选用于汽车中的座椅纵向调整。附图表示:
图1丝杆螺母支承结构一放大的局部的局部剖视图;
图2示意表示一剖开的壳体壁连同在相互面对面的壁内的丝杆螺母支承结构和一夹持此支承结构的支架;
图3一由两个元件组成的支承套筒;
图4一举例性的支架在壳体上的固定;
图5用来将支架固定在壳体上的另一种举例的结构;
图6一可选择的做成两件式的支承套筒的剖视图。
具体实施方式
图1以局部剖视图表示一丝杆螺母支承结构。在两个壁W之间以常见的方式和方法支承一丝杆螺母SM,两个壁中只示意画出一个壁,其中丝杆螺母SM可绕其纵轴线X旋转地支承。通孔WO穿透壁W。
在通孔WO内安装一支承套筒L,它以其第一端面S1贴靠在丝杆螺母SM的一相对置的端面SMS上。支承套筒L在端面处分别具有一凸缘K,其中有时也可以取消一个或两个凸缘K。这里支承套筒L沿轴向、即沿支承套筒L穿过通孔WO的方向的长度l大于壁W的厚度b。在所示实施形式中长度l是两个凸缘K之间的距离。通过这种结构在轴向留出一相当于支承套筒L的长度l与壁W的厚度b之差的间隙Δ。
在中间放置一弹性元件E的情况下一支架H紧靠在支承套筒L的第二端面S2或其相应的第二个凸缘K上。
这里支架H相对于壳体的壁W沿轴向向丝杆螺母SM方向预紧。因此支承套筒L以其第一端面S1弹性地朝丝杆螺母SM的端面SMS预紧,这里由于间隙Δ而在丝杆螺母SM的端面SMS和壁W的内表面之间可能存在的间隙由于预紧得到了补偿。虽然有时在丝杆螺母SM的端面SMS和壁W的内侧之间留出一距离,但它不是那种可以使丝杆螺母SM沿轴向运动的距离,即一自由的间隙。通过弹性元件E由特别是弹性体构成,丝杆螺母SM沿轴向相对于壁W弹性支承。
为了丝杆轴SW的穿入,一轴穿通孔O沿旋转中心线X穿透整个结构,因此丝杆轴SW可以穿过支架H、弹性元件E和支承套筒L装入丝杆螺母SM内。
图2示意表示一丝杆螺母SM,它在其轴向X上两侧用这种丝杆螺母支承结构支承在壳体G的两个壁W内。这里支架H用两个相应的悬臂包围压紧每一侧分别由一弹性元件E、一支承套筒L和安装在它们之间的丝杆螺母SM组成的结构。由于两个支承套筒的沿轴向可调整的长度l大于两个壁相应的宽度b,尽管丝杆螺母SM的端面SMS离壁W的内侧有一定距离,该丝杆螺母仍然无间隙地支承在壳体G的内部。
原则上支承套筒L可以设计得在端面侧的末端区段上只有一个凸缘K或者完全没有凸缘K,以便支承套筒L能移插入壁W上的通孔WO内,如果通孔WO的直径设计得小于相应凸缘K的外径的话。也可以是一从壁W的一个侧壁到做成用于支承套筒L的支承区的区段的槽形通孔,以便能够将带有两个凸缘K的支承套筒L装入支承段。
但是观察具有小于支承套筒L凸缘K的外径的直径的通孔WO特别优选采用具有一个第一和一个第二支承套筒元件L1、L2的两件式支承套筒L,如图3中所示。两个支承套筒元件L1、L2都由一圆柱形段组成,其中至少一个支承套筒元件L2沿轴向X的长度l相当于支承套筒L沿轴向X的长度l,另一个支承套筒元件L1特别是可以具有较短的长度。第一支承套筒元件L1具有小于或尤其是几乎等于第二支承套筒元件L2的圆柱形段的内径的圆柱形段外径,使得两个支承套筒元件L1、L2可以相互插在一起并可在这里绕其纵轴线相互旋转,这使得丝杆螺母SM在支承套筒L和壁W上的通孔WO的壁之间旋转时可以降低摩擦阻力。这种结构使得可以通过将两个支承套筒元件L1、L2从壁W的两侧装入其通孔WO并插在一起的方法简化支承套筒L的装配。
图4表示将支架H直接装在壳体另一个壁GW上的举例性的固定可能性。另一个壁GW是平行于丝杆螺母SM旋转轴线延伸的壁GW。支架H是折弯的、离支承段一定距离,并平行于另一个壁GW延伸。为了固定支架H,它具有一纵向槽HS,螺钉HSR的杆部穿过此槽,以使螺钉HSR拧入另一个壁GW上的螺纹孔GB内。这使得支架H可以沿轴向X找正,特别是以希望的夹紧力预紧在由弹性元件E、支承套筒L和丝杆螺母SM组成的结构上。因此这个支架H是一个直接配设于壳体的支架;而不是这样的支架,即它同时设计成用来将丝杆螺母SM和整个壳体固定在一外部部件上的支架。
图5表示壳体壁W上的支架H的另一种举例性结构。在这种实施形式中支架H本身由这样的弹性材料组成,使支架H以其内侧的壁直接用一夹紧力F朝丝杆螺母SM方向压紧在支承套筒L上。支架H相应地直接固定在壁W本身上,例如借助于螺钉连接或纤焊连接固定。
图6表示支承套筒L一种可选择的结构。这种支承套筒L与图3中示意表示的两件式支承套筒L的区别在于,在内腔中端面S1、S2的壁之间安装一弹性元件E*,特别是螺旋弹簧形式的元件。这个弹性元件E*将两个支承套筒元件L1、L2相互挤开,从而承担例如按图1的装在整个结构内支承套筒L端侧的弹性元件E的功能。
因此可以转化成许多不同的方案,其中丝杆螺母SM在壳体G内的自由间隙Δ通过两个从两侧装上的、通过其H形形状固定在传动箱壳体内的支承套筒以这样的方法消除,即通过弹性元件将支承套筒压紧,使它靠在丝杆螺母上。为此支承套筒相对于壳体厚度或壁厚具有一间隙,它允许支承套筒作这种轴向移动。弹性元件作为弹性体材料最好从外部通过丝杆传动装置的支架支承,丝杆螺母最好应该设计有带圆柱形部分的半环面齿,使得可以取消止推盘。
Claims (12)
1.一种丝杆螺母—支承结构,包括:
—一壁(W),具有壁厚(b)和一穿透壁(W)的通孔(WO),
—一支承套筒(L),它在留出一间隙(Δ)的情况下以大于壁(W)的厚度(b)的长度(l)沿轴向穿过通孔(WO),并可沿轴向(X)运动地支承在通孔内,
—一丝杆螺母(SM),其端面(SMS)在壁的内侧紧靠在支承套筒(L)的一第一端面(S1)上,和
—一支架(H),它使支承套筒(L)的一第二端面(S2)这样地支承在丝杆螺母(SM)上,
—使得丝杆螺母(SM)受到沿背离壁的方向的弹性作用力。
2.按权利要求1的丝杆螺母—支承结构,其中,在支架(H)和支承套筒(L)的第二端面(S2)之间设置一弹性元件(E),并且该弹性元件使支承套筒朝向丝杆螺母(SM)夹紧。
3.按权利要求1或2的丝杆螺母—支承结构,其中,在支承套筒(L)和丝杆螺母(SM)之间设置一弹性元件,并该弹性元件将丝杆螺母(SM)背离支承套筒夹紧。
4.按权利要求2或3的丝杆螺母—支承结构,其中,所述弹性元件(E)由一种弹性体组成。
5.按上述权利要求之任一项的丝杆螺母—支承结构,其中,支承套筒(L)在端面具有凸缘(K),这时支承套筒(L)的长度(l)在各凸缘(K)之间延伸。
6.按上述权利要求之任一项的丝杆螺母—支承结构,其中,壁(W)是一用来安装丝杆螺母(SM)的壳体(G)的一壳体壁,支架(H)是丝杆传动装置支架。
7.按上述权利要求之任一项的丝杆螺母—支承结构,其中,丝杆螺母(SM)两侧都通过一种这样的结构支承。
8.按上述权利要求之任一项的丝杆螺母—支承结构,其中,支承套筒(L)由两个圆柱形支承套筒元件(L1,L2)组成,其中第一支承套筒元件(L1)以其圆柱形外圆周可旋转地支承在第二支承套筒元件(L2)的圆柱形内圆周内。
9.按权利要求8的丝杆螺母—支承结构,其中,支承套筒元件(L1、L2)中的一个或两个具有一凸缘(K)。
10.按上述权利要求之任一项的丝杆螺母—支承结构,其中,一用于穿过丝杆轴(SW)的轴穿透孔(O)穿过由支架(H)、支承套筒(L)和弹性元件(E)组成的结构。
11.按上述权利要求之任一项的丝杆螺母—支承结构,其中,支架(H)由一种弹性材料组成并且将支承套筒(L)朝丝杆螺母(SM)夹紧。
12.一种按权利要求1至11之任一项所述的丝杆螺母—支承结构在汽车座椅纵向调整装置中的应用。
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DE102004059538A DE102004059538B3 (de) | 2004-12-09 | 2004-12-09 | Spindelmutter-Lageranordnung |
DE102004059538.0 | 2004-12-09 |
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CN1786520A true CN1786520A (zh) | 2006-06-14 |
CN100526682C CN100526682C (zh) | 2009-08-12 |
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CN200510114154.4A Expired - Fee Related CN100526682C (zh) | 2004-12-09 | 2005-10-26 | 丝杆螺母-支承结构 |
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US (1) | US8113073B2 (zh) |
EP (1) | EP1669618B1 (zh) |
CN (1) | CN100526682C (zh) |
AT (1) | ATE405756T1 (zh) |
DE (2) | DE102004059538B3 (zh) |
ES (1) | ES2311913T3 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101307817B (zh) * | 2007-05-16 | 2011-07-27 | Ims传动装置有限公司 | 用于调节装置尤其是汽车的调节装置的传动装置 |
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FR3071784B1 (fr) * | 2017-09-29 | 2019-10-18 | Faurecia Sieges D'automobile | Mecanisme de reglage a vis, glissiere comportant un tel mecanisme de reglage et siege comportant une telle glissiere. |
CN107701711A (zh) * | 2017-11-18 | 2018-02-16 | 苏州金牛精密机械有限公司 | 一种齿轮间隙调整机构 |
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US3122936A (en) * | 1964-03-03 | dykes | ||
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DE2709592C2 (de) * | 1977-03-03 | 1979-04-26 | Kraftwerk Union Ag, 4330 Muelheim | Vorrichtung zum Drehen und Transportieren der Muttern mehrerer auf einem Lochkreis angeordneter Schraubenbolzen |
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JPS57171115A (en) * | 1981-04-13 | 1982-10-21 | Niigata Eng Co Ltd | Bearing |
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FR2580759B1 (fr) * | 1985-04-18 | 1990-02-23 | Marchal Equip Auto | Dispositif de commande du deplacement d'un element, notamment d'un siege ou des parties d'un siege d'un vehicule automobile, par rapport a un bati |
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DE4434401C1 (de) * | 1994-09-16 | 1995-11-16 | Mannesmann Ag | Wegaufnehmergetriebe in einem Schubantrieb |
AT4394U1 (de) * | 1999-10-14 | 2001-06-25 | Steyr Daimler Puch Ag | Lagerung einer schnellaufenden welle und verbrennungskraftmaschine mit einer so gelagerten ausgleichswelle |
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2004
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2005
- 2005-09-06 DE DE502005005090T patent/DE502005005090D1/de active Active
- 2005-09-06 AT AT05019315T patent/ATE405756T1/de not_active IP Right Cessation
- 2005-09-06 ES ES05019315T patent/ES2311913T3/es active Active
- 2005-09-06 EP EP05019315A patent/EP1669618B1/de not_active Not-in-force
- 2005-10-26 CN CN200510114154.4A patent/CN100526682C/zh not_active Expired - Fee Related
- 2005-12-09 US US11/298,921 patent/US8113073B2/en not_active Expired - Fee Related
Cited By (1)
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CN101307817B (zh) * | 2007-05-16 | 2011-07-27 | Ims传动装置有限公司 | 用于调节装置尤其是汽车的调节装置的传动装置 |
Also Published As
Publication number | Publication date |
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ES2311913T3 (es) | 2009-02-16 |
ATE405756T1 (de) | 2008-09-15 |
DE102004059538B3 (de) | 2006-01-26 |
DE502005005090D1 (de) | 2008-10-02 |
EP1669618A3 (de) | 2007-12-05 |
US8113073B2 (en) | 2012-02-14 |
CN100526682C (zh) | 2009-08-12 |
US20060123938A1 (en) | 2006-06-15 |
EP1669618A2 (de) | 2006-06-14 |
EP1669618B1 (de) | 2008-08-20 |
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