DE102008042609A1 - Bearing device for worm in steering gear of power steering, has inner ring for accommodating shaft end of worm to mount shaft end in housing, and spring for subjecting inner ring with axially acting force - Google Patents
Bearing device for worm in steering gear of power steering, has inner ring for accommodating shaft end of worm to mount shaft end in housing, and spring for subjecting inner ring with axially acting force Download PDFInfo
- Publication number
- DE102008042609A1 DE102008042609A1 DE102008042609A DE102008042609A DE102008042609A1 DE 102008042609 A1 DE102008042609 A1 DE 102008042609A1 DE 102008042609 A DE102008042609 A DE 102008042609A DE 102008042609 A DE102008042609 A DE 102008042609A DE 102008042609 A1 DE102008042609 A1 DE 102008042609A1
- Authority
- DE
- Germany
- Prior art keywords
- bearing
- shaft end
- inner ring
- spring
- worm
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0409—Electric motor acting on the steering column
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/22—Toothed members; Worms for transmissions with crossing shafts, especially worms, worm-gears
- F16H55/24—Special devices for taking up backlash
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
- F16H2057/0213—Support of worm gear shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
- F16H57/022—Adjustment of gear shafts or bearings
- F16H2057/0221—Axial adjustment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
- F16H2057/126—Self-adjusting during operation, e.g. by a spring
- F16H2057/127—Self-adjusting during operation, e.g. by a spring using springs
Abstract
Description
Die Erfindung betrifft die Lagerung einer Schnecke in einem Lenkgetriebe gemäß dem Oberbegriff des Anspruchs 1 sowie ein entsprechendes Lenkgetriebe und eine damit ausgestattete Servolenkung gemäß dem Oberbegriff eines der nebengeordneten Ansprüche.The The invention relates to the mounting of a worm in a steering gear according to the preamble of claim 1 and a corresponding steering gear and a power steering system equipped therewith according to the generic term of one of the siblings Claims.
Insbesondere betrifft die Erfindung die Lagerung einer Schnecke mittels eines Loslagers und eines Festlagers.Especially the invention relates to the storage of a screw by means of a Loslagers and a fixed camp.
Aus
der
Daher ist es Aufgabe der Erfindung, eine Lagerung für die Schnecke in einem Lenkgetriebe so vorzuschlagen, dass die genannten Nachteile in vorteilhafter Weise überwunden werden. Insbesondere sollen eine möglichst einfach zu realisierende und geräuscharme Konstruktion einer Lagerung, ein damit versehenes Lenkgetriebe und eine damit ausgestattete Servolenkung bereitgestellt werden.Therefore It is an object of the invention, a storage for the screw to propose in a steering gear so that the disadvantages mentioned be overcome in an advantageous manner. In particular, should an as easy as possible and low-noise Construction of a bearing, provided with a steering gear and provided with a power steering equipped therewith.
Gelöst wird die Aufgabe durch eine Lagerung einer Schnecke mit den Merkmalen des Anspruchs 1. Demnach wird ein Federelement vorgesehen, das den Innenring des Festlagers mit einer axial wirkenden Kraft beaufschlagt.Solved The object is achieved by storing a screw with the characteristics of claim 1. Accordingly, a spring element is provided which the Inner ring of the fixed bearing acted upon by an axially acting force.
Somit wird eine axial auf die Lagerung der Schnecke wirkende Anfederung geschaffen, die quasi kein auftretendes freies Spiel erlaubt und somit die Geräuschbildung effektiv verhindert. Zudem kann die Anfederung kostengünstig realisiert werden. Als Federelement wird hierbei jede Art von elastischem Element verstanden, also nicht nur Federelemente im engeren Sinne, sondern Elemente aus beliebigem elastischen Material, wie z. B. auch Elastomere und dergleichen.Consequently becomes an axially acting on the storage of the screw springing created, which allows virtually no occurring free play and thus effectively preventing the noise. In addition, can the springing can be realized cost-effectively. As a spring element This is understood to mean any type of elastic element, not so only spring elements in the strict sense, but elements of any elastic Material, such. B. also elastomers and the like.
Vorgeschlagen wird auch ein Lenkgetriebe mit einer solchen Lagerung, d. h. mit einer Lagerung, die ein Festlager mit einem Außenring, einem Innenring und mit dazwischen beweglich aufgenommenen Wälzkörpern aufweist, wobei der Innenring ein erstes Wellenende der Schnecke aufnimmt, um dieses Wellenende radial in dem Gehäuse des Lenkgetriebes zu lagern, wobei ein Federelement vorgesehen ist, das den Innenring des Festlagers mit einer axial wirkenden Kraft beaufschlagt.proposed is also a steering gear with such storage, d. H. With a bearing, which is a fixed bearing with an outer ring, an inner ring and with movably received therein rolling elements wherein the inner ring has a first shaft end of the screw receives radially to this shaft end in the housing of the To store steering gear, wherein a spring element is provided, that the inner ring of the fixed bearing with an axially acting force applied.
Auch wird eine damit ausgestattete Servolenkung vorgeschlagen.Also is proposed a power steering equipped with it.
Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.advantageous Embodiments of the invention will become apparent from the dependent claims.
Demnach ist es vorteilhaft, wenn gemäß einer ersten Ausführungsform das Federelement als eine Druckfeder ausgebildet ist, die vorzugsweise auch in oder an einem angetriebenen Wellenende der Schnecke angeordnet ist. Dabei beaufschlagt die Druckfeder den Innenring des Festlagers mit einer axial wirkenden Kraft und verschiebt somit den Innenring gegen den Außenring. In diesem Zusammenhang kann zwischen der Druckfeder und dem Innenring noch mindestens ein Zwischenstück, insbesondere ein Stößel, angeordnet sein, der die axiale Kraft von der Druckfeder direkt auf den Innenring oder indirekt über mindestens ein weiteres Zwischenstück auf den Innenring überträgt. Das Festlager ist dabei vorzugsweise in Form eines Rillenkugellagers ausgebildet.Therefore it is advantageous if according to a first embodiment the spring element is designed as a compression spring, preferably also arranged in or on a driven shaft end of the screw is. The compression spring acts on the inner ring of the fixed bearing with an axially acting force and thus displaces the inner ring against the outer ring. In this context, between the compression spring and the inner ring at least one intermediate piece, in particular a plunger, be arranged, the the axial force of the compression spring directly on the inner ring or indirectly via at least one further intermediate piece transfers to the inner ring. The camp is here preferably formed in the form of a deep groove ball bearing.
Alternativ dazu kann das Federelement an dem anderen Wellenende der Schnecke angeordnet sein, also an dem freien Wellenende der Schnecke, welches in einem Loslager gelagert ist. Das Federelement kann dabei insbesondere eine Spiralfeder, eine Blattfeder oder eine Tellerfeder sein, die zwischen dem Gehäuse des Lenkgetriebes und dem in dem Loslager gelagerten freien Wellenende der Schnecke angeordnet ist. Dabei beaufschlagt das Federelement das freie Wellenende der Schnecke mit einer axial wirkenden Kraft, die über die Schnecke weitergeleitet wird und an dem anderen Wellenende auf das Festlager und insbesondere auf den dortigen Innenring wirkt. Bevorzugt hat das freie Wellenende der Schnecke eine ballige Kontur, die z. B. durch eine Kugel realisiert werden kann, welche die axial wirkende Kraft punktuell auf das freie Wellenende der Schnecke überträgt. Dabei kann vorgesehen sein, dass die Kugel in das freie Wellenende der Schnecke eingepresst ist.Alternatively, the spring element may be arranged on the other shaft end of the worm, that is on the free end of the worm shaft, which is mounted in a floating bearing. The spring element may be in particular a coil spring, a leaf spring or a plate spring, which is arranged between the housing of the steering gear and the bearing in the floating bearing free end of the screw shaft. In this case, the spring element acts on the free shaft end of the screw with an axially acting force, which is forwarded via the screw and acts on the other end of the shaft on the fixed bearing and in particular on the local inner ring. Preferably, the free end of the screw shaft has a spherical contour, the z. B. can be realized by a ball, which selectively transfers the axially acting force to the free end of the worm shaft. It can be provided be that the ball is pressed into the free shaft end of the screw.
Die Erfindung und die sich ergebenden Vorteile werden nachfolgend anhand von Ausführungsbeispielen im Detail beschrieben, wobei auf folgende schematischen Zeichnungen Bezug genommen wird:The The invention and the resulting advantages will be described below of embodiments described in detail, wherein Reference is made to the following schematic drawings:
Die
Dazu
ist das Federelement in Form einer Druckfeder F1 ausgebildet, die
in die mit einem Servomotor (nicht dargestellt) verbundene Antriebswelle AW
eingelassen ist und in axialer Richtung gegen einen Stößel
ST und weitere Verbindungs- bzw. Zwischenteile drückt,
um schließlich die Federkraft auf den Innenring
In
der
Wie
in
Die
Wie
auch anhand der
- LF, LSLF, LS
- Festlager, Rillenkugellager oder SchwenklagerFixed bearing, Deep groove ball bearings or swivel bearings
- LLLL
- Loslagermovable bearing
- SS
- Schneckeslug
- WFWF
- erstes Wellenende (Festlagerseite, angetriebenes Wellenende)first Shaft end (fixed bearing side, driven shaft end)
- WLWL
- zweites Wellenende (Loslagerseite, angetriebenes Wellenende)second Shaft end (floating bearing side, driven shaft end)
- 11
- Außenring des Festlagersouter ring of the fixed camp
- 22
- Innenring des Festlagersinner ring of the fixed camp
- 44
- Wälzkörper, als Kugel ausgebildetrolling elements, designed as a ball
- 6, 6'6 6 '
- Lagerungsaufnahme, Zwischenring oder SchwenkringStorage Up, Intermediate ring or swivel ring
- F1F1
- Federelement, als Spiralfeder (Druckfeder) ausgebildetSpring element, formed as a spiral spring (compression spring)
- F2F2
- Federelement, als Spiralfeder ausgebildetSpring element, designed as a spiral spring
- F3F3
- Federelement, als Blattfeder ausgebildetSpring element, designed as a leaf spring
- AWAW
- Antriebswelle bzw. Motorwelledrive shaft or motor shaft
- LWLW
- Lager für Motorwellecamp for motor shaft
- STST
- Verbindungselement, insbesondere Stößel zur KraftübertragungConnecting element, in particular ram for power transmission
- GG
- Gehäuse des Lenkgetriebescasing of the steering gear
- K*K *
- Kugel, eingepresst in das freie Wellenende der SchneckeBullet, pressed into the free shaft end of the screw
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - EP 1453717 B1 [0003] - EP 1453717 B1 [0003]
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008042609A DE102008042609A1 (en) | 2008-10-06 | 2008-10-06 | Bearing device for worm in steering gear of power steering, has inner ring for accommodating shaft end of worm to mount shaft end in housing, and spring for subjecting inner ring with axially acting force |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008042609A DE102008042609A1 (en) | 2008-10-06 | 2008-10-06 | Bearing device for worm in steering gear of power steering, has inner ring for accommodating shaft end of worm to mount shaft end in housing, and spring for subjecting inner ring with axially acting force |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008042609A1 true DE102008042609A1 (en) | 2010-04-08 |
Family
ID=41794774
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102008042609A Ceased DE102008042609A1 (en) | 2008-10-06 | 2008-10-06 | Bearing device for worm in steering gear of power steering, has inner ring for accommodating shaft end of worm to mount shaft end in housing, and spring for subjecting inner ring with axially acting force |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102008042609A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014135382A1 (en) * | 2013-03-06 | 2014-09-12 | Thyssenkrupp Presta Ag | Angularly movable bearing arrangement for pinions in reduction gears of electromechanical steering systems |
WO2017088872A1 (en) * | 2015-11-23 | 2017-06-01 | Schaeffler Technologies AG & Co. KG | Arrangement for axially bracing a cvt-fixed bearing from outside a transmission housing |
DE102016120357A1 (en) | 2016-10-25 | 2018-04-26 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | worm gear |
DE102019115232A1 (en) * | 2019-06-05 | 2020-12-10 | Zf Automotive Germany Gmbh | Electromechanically assisted steering system |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6491131B1 (en) * | 1998-06-16 | 2002-12-10 | Trw Lucasvarity Electric Steering Ltd. | Electrical power assisted steering |
US6900564B2 (en) * | 2001-06-20 | 2005-05-31 | Koyo Seiko Co., Ltd. | Electric power steering system |
EP1571067A1 (en) * | 2002-12-09 | 2005-09-07 | NSK Ltd. | Electric power steering device |
EP1453717B1 (en) | 2001-12-15 | 2006-12-06 | ZF Lenksysteme GmbH | Electric servo-assisted steering system for motor vehicles |
EP1760368A1 (en) * | 2002-02-04 | 2007-03-07 | JTEKT Corporation | Electric Power Steering Apparatus |
JP2007247734A (en) * | 2006-03-15 | 2007-09-27 | Nsk Ltd | Worm type reduction gear and electric power steering system |
-
2008
- 2008-10-06 DE DE102008042609A patent/DE102008042609A1/en not_active Ceased
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6491131B1 (en) * | 1998-06-16 | 2002-12-10 | Trw Lucasvarity Electric Steering Ltd. | Electrical power assisted steering |
US6900564B2 (en) * | 2001-06-20 | 2005-05-31 | Koyo Seiko Co., Ltd. | Electric power steering system |
EP1453717B1 (en) | 2001-12-15 | 2006-12-06 | ZF Lenksysteme GmbH | Electric servo-assisted steering system for motor vehicles |
EP1760368A1 (en) * | 2002-02-04 | 2007-03-07 | JTEKT Corporation | Electric Power Steering Apparatus |
EP1571067A1 (en) * | 2002-12-09 | 2005-09-07 | NSK Ltd. | Electric power steering device |
JP2007247734A (en) * | 2006-03-15 | 2007-09-27 | Nsk Ltd | Worm type reduction gear and electric power steering system |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014135382A1 (en) * | 2013-03-06 | 2014-09-12 | Thyssenkrupp Presta Ag | Angularly movable bearing arrangement for pinions in reduction gears of electromechanical steering systems |
US9988071B2 (en) | 2013-03-06 | 2018-06-05 | Thyssenkrupp Presta Ag | Angularly movable bearing arrangement for pinions in reduction gears of electromechanical steering systems |
WO2017088872A1 (en) * | 2015-11-23 | 2017-06-01 | Schaeffler Technologies AG & Co. KG | Arrangement for axially bracing a cvt-fixed bearing from outside a transmission housing |
US10865871B2 (en) | 2015-11-23 | 2020-12-15 | Schaeffler Technologies AG & Co. KG | Arrangement for axially bracing a CVT-fixed bearing from outside a transmission housing |
DE102016120357A1 (en) | 2016-10-25 | 2018-04-26 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | worm gear |
US10865869B2 (en) | 2016-10-25 | 2020-12-15 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Worm drive |
DE102016120357B4 (en) | 2016-10-25 | 2024-02-15 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | worm gear |
DE102019115232A1 (en) * | 2019-06-05 | 2020-12-10 | Zf Automotive Germany Gmbh | Electromechanically assisted steering system |
US11820440B2 (en) | 2019-06-05 | 2023-11-21 | Zf Automotive Germany Gmbh | Electromechanically assisted steering system |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
R012 | Request for examination validly filed |
Effective date: 20110316 |
|
R016 | Response to examination communication | ||
R002 | Refusal decision in examination/registration proceedings | ||
R003 | Refusal decision now final | ||
R081 | Change of applicant/patentee |
Owner name: ROBERT BOSCH AUTOMOTIVE STEERING GMBH, DE Free format text: FORMER OWNER: ZF LENKSYSTEME GMBH, 73527 SCHWAEBISCH GMUEND, DE Effective date: 20150423 |