DE19611115B4 - Housing for a hydraulically assisted rack and pinion steering gear - Google Patents

Housing for a hydraulically assisted rack and pinion steering gear Download PDF

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Publication number
DE19611115B4
DE19611115B4 DE1996111115 DE19611115A DE19611115B4 DE 19611115 B4 DE19611115 B4 DE 19611115B4 DE 1996111115 DE1996111115 DE 1996111115 DE 19611115 A DE19611115 A DE 19611115A DE 19611115 B4 DE19611115 B4 DE 19611115B4
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DE
Germany
Prior art keywords
housing
hydraulic
pinion
steering gear
channels
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.)
Expired - Fee Related
Application number
DE1996111115
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German (de)
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DE19611115A1 (en
Inventor
Eberhard Dipl.-Ing. Jordan
Marian Dipl.-Ing. Lukoschek
Klaus Dipl.-Ing. Schäfer
Rolf Dipl.-Ing. Pflughaupt (FH)
Matthias von Dipl.-Ing. Küster (TU)
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GM Global Technology Operations LLC
Original Assignee
Adam Opel GmbH
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Publication date
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Priority to DE1996111115 priority Critical patent/DE19611115B4/en
Publication of DE19611115A1 publication Critical patent/DE19611115A1/en
Application granted granted Critical
Publication of DE19611115B4 publication Critical patent/DE19611115B4/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/20—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application
    • B62D5/22—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application for rack-and-pinion type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/04—Use of lost patterns

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Valve Housings (AREA)
  • Power Steering Mechanism (AREA)

Abstract

Gehäuse für ein hydraulisch unterstütztes Zahnstangenlenkgetriebe für Fahrzeuge, mit einem rohrförmigen Zylinder und mit einem Ritzelventilgehäuse sowie mit Hydraulikkanälen zur Zufuhr von Hydraulikflüssigkeit von dem Ritzelventilgehäuse zu den Arbeitsräumen des Zylinders und zumindest einem Entlüftungskanal, dadurch gekennzeichnet, daß das Gehäuse (1) ein mit verlorenem Kernverfahren hergestelltes Gußteil ist, bei dem Hydraulikkanäle (6, 8) und/oder Entlüftungskanäle (9) durch die verlorene Gießform beim Gießen gebildet sind.Housing for a hydraulic supported Rack and pinion steering gear for Vehicles, with a tubular Cylinder and with a pinion valve housing and with hydraulic channels for Supply of hydraulic fluid from the pinion valve housing to the workrooms the cylinder and at least one venting channel, characterized that this casing (1) is a lost-core casting, at the hydraulic channels (6, 8) and / or venting channels (9) the lost mold when casting are formed.

Figure 00000001
Figure 00000001

Description

Die Erfindung betrifft ein Gehäuse für ein hydraulisch unterstütztes Zahnstangenlenkgetriebe nach dem Oberbegriff des Patentanspruches.The The invention relates to a housing for a hydraulically assisted Rack and pinion steering gear according to the preamble of claim.

Ein solches Gehäuse ist durch DE 40 19 693 C1 bekannt geworden. Bei diesem bekannten Gehäuse ist der Zylinder aus einem Strangpreßprofil gebildet, indem zusätzlich zur Zylinderbohrung zwei Hydraulikkanäle parallel zur Zylinderbohrung ausgebildet sind. Das Strangpreßprofil ist an der dem Ritzelventilgehäuse zugewandten Seite soweit abgearbeitet, daß nur die zwei Hydraulikleitungen verbleiben, die dann in Richtung zur Mittelachse des Ventilritzelgehäuses gebogen und mit letzterem durch Umgießen bis in den benachbarten zylindrischen Bereich des vollständigen Strangpreßprofils hinein verbunden sind. Die Verbindungslöcher zwischen der Zylinderbohrung sowie der Ritzelgehäusebohrung und den Hydraulikkanälen werden nachträglich gebohrt.Such a housing is through DE 40 19 693 C1 known. In this known housing, the cylinder is formed from an extruded profile by two hydraulic channels are formed parallel to the cylinder bore in addition to the cylinder bore. The extruded profile is processed on the side facing the pinion valve housing so far that only the two hydraulic lines remain, which are then bent in the direction of the central axis of the valve pinion housing and connected to the latter by encapsulation into the adjacent cylindrical portion of the complete extruded profile. The connecting holes between the cylinder bore and the pinion housing bore and the hydraulic channels are drilled subsequently.

Ein solches Gehäuse hat zwar keine außenliegenden angeschraubten Hydraulikleitungen, es ist aber sehr aufwendig in der Fertigung und damit teuer.One such housing does not have any external bolted hydraulic lines, but it is very expensive in the production and therefore expensive.

Aufgabe der Erfindung ist es, ein Gehäuse nach dem Oberbegriff des Patentanspruches zu schaffen, das ohne außen angebrachte Hydraulikleitungen auskommt und gegenüber bekannten Ausführungen einfacher herstellbar ist.task The invention is to a housing after to provide the preamble of claim that without externally attached Hydraulic lines and over known designs is easier to produce.

Erfindungsgemäß wird diese Aufgabe durch die kennzeichnenden Merkmale des Patentanspruches gelöst.According to the invention this Task by the characterizing features of claim solved.

Ein Ausführungsbeispiel der Erfindung ist nachstehend anhand einer Zeichnung näher beschrieben. Es zeigenOne embodiment The invention is described below with reference to a drawing. Show it

1: ein Gehäuse nach der Erfindung im Längsschnitt; 1 a housing according to the invention in longitudinal section;

2: einen Schnitt entlang der Linie A-A in 1; 2 : a section along the line AA in 1 ;

3: einen Schnitt entlang der Linie B-B in 1. 3 : a section along the line BB in 1 ,

Ein Gehäuse 1 für ein hydraulisch unterstütztes Zahnstangenlenkgetriebe weist einen rohrförmigen Zylinder 2 zur Führung eines mit einer Zahnstange verbundenen Hydraulikkolbens, einen Raum 3 zur Führung der Zahnstange sowie ein Ritzelventilgehäuse 4 zur Lagerung des Zahnstangenritzels und des mit ihm verbundenen Ventilschiebers auf. In einer Wandung 5 des Raumes 3 sind Hydraulikkanäle 6 zur Zuführung von Hydraulikflüssigkeit in den Zylinder 2 aus dem Ritzelventilgehäuse 4 vorgesehen. In der Wandung 7 ist eine weitere Hydraulikleitung 8 sowie eine Entlüftungsleitung 9 für den am offenen Ende 10 des Raumes 3 im montierten Zustand angesetzten Faltenbalg vorgesehen. Die Hydraulikleitungen 6, 8 setzen sich durch die Wandung 11 des Ritzelventilgehäuses 4 fort und münden in dieses ein. Das Gehäuse 1 ist in einem Stück gegossen, wobei die Hydraulikkanäle 6, 8 sowie der Entlüftungskanal 9 beim Gießen durch Einlegen bzw. Einkleben einer verlorenen Form, die beim Gießvorgang vergast, mit hergestellt werden. Damit die eingelegte Form für die Kanäle die richtige Lage während des Gießens beibehält, können zur Außenseite des Gehäuses 1 hin Abstützungen vorgesehen sein. Die dadurch entstehenden Öffnungen 12 werden bei der Montage des Lenkgetriebes verdeckelt. Bei diesem Gehäuse 1 müssen lediglich die inneren Wandungen des Zylinders 2 sowie des Ritzelventilgehäuses 4 und die äußeren Hydraulikanschlüsse 13 am Ritzelventilgehäuse 4 spanend bearbeitet werden.A housing 1 for a hydraulically assisted rack and pinion steering gear has a tubular cylinder 2 for guiding a hydraulic piston connected to a rack, a space 3 for guiding the rack and a pinion valve housing 4 for the storage of the pinion gear and the valve spool connected to it. In a wall 5 of the room 3 are hydraulic channels 6 for supplying hydraulic fluid into the cylinder 2 from the pinion valve housing 4 intended. In the wall 7 is another hydraulic line 8th and a vent line 9 for the one at the open end 10 of the room 3 provided in the assembled state bellows. The hydraulic lines 6 . 8th sit down by the wall 11 of the pinion valve housing 4 continue and join in this. The housing 1 is cast in one piece, with the hydraulic channels 6 . 8th as well as the venting channel 9 when casting by inserting or sticking a lost mold that gassed during the casting, are produced with. In order for the inserted shape for the channels to maintain the correct position during casting, may be to the outside of the housing 1 hin Abstützungen be provided. The resulting openings 12 are capped during assembly of the steering gear. In this case 1 only need the inner walls of the cylinder 2 and the pinion valve housing 4 and the external hydraulic connections 13 on the pinion valve housing 4 be machined.

Ein Lenkgetriebe mit einem solchen Gehäuse kann ohne außen angesetzte Leitungen auskommen. Das Gehäuse ist einfach und damit kostengünstig herstellbar.One Steering gear with such a housing can be without externally attached Lines get along. The housing is easy and therefore inexpensive produced.

Claims (1)

Gehäuse für ein hydraulisch unterstütztes Zahnstangenlenkgetriebe für Fahrzeuge, mit einem rohrförmigen Zylinder und mit einem Ritzelventilgehäuse sowie mit Hydraulikkanälen zur Zufuhr von Hydraulikflüssigkeit von dem Ritzelventilgehäuse zu den Arbeitsräumen des Zylinders und zumindest einem Entlüftungskanal, dadurch gekennzeichnet, daß das Gehäuse (1) ein mit verlorenem Kernverfahren hergestelltes Gußteil ist, bei dem Hydraulikkanäle (6, 8) und/oder Entlüftungskanäle (9) durch die verlorene Gießform beim Gießen gebildet sind.Housing for a hydraulically assisted rack and pinion steering gear for vehicles, comprising a tubular cylinder and a pinion valve housing and having hydraulic channels for supplying hydraulic fluid from the pinion valve housing to the working spaces of the cylinder and at least one ventilation channel, characterized in that the housing ( 1 ) is a lost-core casting in which hydraulic passages ( 6 . 8th ) and / or venting channels ( 9 ) are formed by the lost mold during casting.
DE1996111115 1996-03-21 1996-03-21 Housing for a hydraulically assisted rack and pinion steering gear Expired - Fee Related DE19611115B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1996111115 DE19611115B4 (en) 1996-03-21 1996-03-21 Housing for a hydraulically assisted rack and pinion steering gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1996111115 DE19611115B4 (en) 1996-03-21 1996-03-21 Housing for a hydraulically assisted rack and pinion steering gear

Publications (2)

Publication Number Publication Date
DE19611115A1 DE19611115A1 (en) 1997-09-25
DE19611115B4 true DE19611115B4 (en) 2007-03-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10151930B4 (en) * 2001-10-20 2011-02-24 Audi Ag venting device
DE10336867B4 (en) * 2003-08-11 2021-07-01 Volkswagen Ag Vehicle steering with electrical auxiliary drive

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2259845A1 (en) * 1972-12-07 1974-06-12 Laepple August Gmbh & Co PROCESS FOR MAKING THIN HOLES, E.G. LUBRICATION HOLES OR VENTILATION HOLES IN THICK-WALLED CASTINGS AND CASTING MODELS, ESPECIALLY FULL-FORM CASTING MODELS FOR THIS PROCESS
DE2503285C2 (en) * 1975-01-28 1984-08-30 MTU Motoren- und Turbinen-Union München GmbH, 8000 München Method for producing a one-piece, thermally highly stressed, cooled component, in particular a blade for turbine engines
DE3613191C2 (en) * 1985-04-19 1987-11-26 Toyota Jidosha K.K., Toyota, Aichi, Jp
DE3817335A1 (en) * 1988-05-20 1989-11-23 Kunststoffverarbeitung Moessne STEERING GEARBOX
EP0431770A2 (en) * 1989-12-04 1991-06-12 General Motors Corporation Lost-foam Casting of dual alloy engine block
DE4019693C1 (en) * 1990-06-21 1991-09-26 Georg Fischer Ag, Schaffhausen, Ch Motor vehicle tower steering - has hydraulic ducts to cylinder chambers with rack adjoining pinion
EP0560493A1 (en) * 1992-02-11 1993-09-15 General Electric Company Stator frame for dynamoelectric machine and method for making same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2259845A1 (en) * 1972-12-07 1974-06-12 Laepple August Gmbh & Co PROCESS FOR MAKING THIN HOLES, E.G. LUBRICATION HOLES OR VENTILATION HOLES IN THICK-WALLED CASTINGS AND CASTING MODELS, ESPECIALLY FULL-FORM CASTING MODELS FOR THIS PROCESS
DE2503285C2 (en) * 1975-01-28 1984-08-30 MTU Motoren- und Turbinen-Union München GmbH, 8000 München Method for producing a one-piece, thermally highly stressed, cooled component, in particular a blade for turbine engines
DE3613191C2 (en) * 1985-04-19 1987-11-26 Toyota Jidosha K.K., Toyota, Aichi, Jp
DE3817335A1 (en) * 1988-05-20 1989-11-23 Kunststoffverarbeitung Moessne STEERING GEARBOX
EP0431770A2 (en) * 1989-12-04 1991-06-12 General Motors Corporation Lost-foam Casting of dual alloy engine block
DE4019693C1 (en) * 1990-06-21 1991-09-26 Georg Fischer Ag, Schaffhausen, Ch Motor vehicle tower steering - has hydraulic ducts to cylinder chambers with rack adjoining pinion
EP0560493A1 (en) * 1992-02-11 1993-09-15 General Electric Company Stator frame for dynamoelectric machine and method for making same

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DE19611115A1 (en) 1997-09-25

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Owner name: GM GLOBAL TECHNOLOGY OPERATIONS, INC., DETROIT, US

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