GB2114718A - Telescopic tube assembly suitable for an adjustable-height motor vehicle steering column - Google Patents

Telescopic tube assembly suitable for an adjustable-height motor vehicle steering column Download PDF

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Publication number
GB2114718A
GB2114718A GB08302086A GB8302086A GB2114718A GB 2114718 A GB2114718 A GB 2114718A GB 08302086 A GB08302086 A GB 08302086A GB 8302086 A GB8302086 A GB 8302086A GB 2114718 A GB2114718 A GB 2114718A
Authority
GB
United Kingdom
Prior art keywords
tube
tube assembly
inner tube
telescopic tube
telescopic
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.)
Granted
Application number
GB08302086A
Other versions
GB8302086D0 (en
GB2114718B (en
Inventor
Hans Arnold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Reiche and Co
Original Assignee
Reiche and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Reiche and Co filed Critical Reiche and Co
Publication of GB8302086D0 publication Critical patent/GB8302086D0/en
Publication of GB2114718A publication Critical patent/GB2114718A/en
Application granted granted Critical
Publication of GB2114718B publication Critical patent/GB2114718B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/16—Steering columns
    • B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
    • B62D1/185—Steering columns yieldable or adjustable, e.g. tiltable adjustable by axial displacement, e.g. telescopically
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/02—Sliding-contact bearings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/02—Shafts; Axles
    • F16C3/03—Shafts; Axles telescopic
    • F16C3/035—Shafts; Axles telescopic with built-in bearings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/20—Land vehicles
    • F16C2326/24—Steering systems, e.g. steering rods or columns

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Steering Controls (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

The telescopic tube assembly comprises an inner tube (4) and an outer tube (3) which, in the region of overlap, are non-rotatable and play- free relative to each other, and are mounted slidably on the longitudinal axis of the telescopic tube assembly. In the process for producing the sliding connection between the inner tube (4) and the outer tube (3) of the telescopic assembly, the inner tube (4) is introduced into a mould and at least one slide bush (5) of plastics material or metal is injected or cast around the inner tube. After the slide bush (5) hardens, the outer tube (3) is form- lockingly formed onto the slide bush (5). <IMAGE>

Description

SPECIFICATION Telescopic tube assembly suitable for an adjustable-height motor vehicle steering column, and process for the production of a sliding connection between the inner tube and the outer tube of the telescopic tube assembly This invention relates to a telescopic tube assembly comprising an inner tube and an outer tube which, in the region of overlap, are nonrotatable and play-free relative to each other, wherein the telescopic tube assembly can be selectively increased or reduced in length in the direction of its longitudinal axis, and a process for the production of a sliding connection between the inner tube and the outer tube of the telescopic tube assembly.
It is known for telescopic tube assemblies of that kind to be employed for buckling-resistant motor vehicle steering columns, the reduction in the length of which however is triggered only by a vehicle impact.
In order to produce the slide bushes or sleeves which are required in the region of overlap between the outer tube and the inner tube, it is known for two plastics sleeves to be pushed onto the inner tube which is for example of triangular cross-section, the plastic sleeves being disposed at a spacing from each other and, in the region of overlap with the outer tube, forming upper and lower slide bushes. After the plastics sleeves are fitted onto the inner tube, there are air gaps between the plastics sleeves and the inner tube so that the plastics sleeves cannot be used in that form as play-free slide bushes.
In order to provide a press fit in respect of the plastics sleeves relative to the inner tube, and in order to form a play-free, non-rotatable connection between the outer tube and the plastics sleeves, the cylindrical outer tube is pushed over the plastics sleeves and then subjected to such severe deformation, in the region of the plastics sleeves, that the plastics material of the sleeves is plasticized and completely fills the space between the inner and outer tubes. That provides a play-free and nonrotatable connection between the outer and inner tubes of the telescopic assembly.
As the outer tube is subjected to relatively high deformation forces in order also to cause plasticization of the plastics material of the sleeves, there is also an intensive frictional engagement between the outer tube and the slide bushes formed by the plastics sleeves, for a sliding movement as between the inner tube and the outer tube.
The invention is based on the problem of additionally providing lengthwise adjustability, in addition to the freedom from play and the buckling resistance of the telescopic tube assembly referred to above, by the slide bushes provided in the region of overlap being put onto the inner tube in such a way that the sliding fit between the outer tube and the sliding surface scan be produced with tools which are independent of each other.
According to the invention, that problem is solved in that, in the region of overlap, the inner tube has at least one slide bush which is injected or cast thereon.
In the process according to the invention, for producing the slide bush, the inner tube is introduced into a mould, at least one slide bush of plastics material or metal is injected or cast therearound, wherein the outside surfaces of the slide bush are defined by the inside surfaces of the mould. After hardening of the slide bush, the outer tube is form-lockingly formed onto the slide bush.
If two slide bushes are provided at a spacing from each other on the inner tube, that provides that the outside surfaces of the slide bushes are completely independent of the configuration of the outside surfaces of the inner tube so that the outside surfaces of the bushes are precisely aligned with each other, even when the inner tube is a little twisted. Any inaccuracies in production or dimensional tolerances in respect of the inner tube therefore do not have any effect on the configuration of the outside surfaces of the slide bushes. Therefore, the slide surfaces of the outer tube can be fitted in a pre-manufactured condition over the inner tube.
In an advantageous embodiment of the innovation, the inner tube has recesses which are distributed around the periphery thereof and which are filled with material of the slide bushes, thereby forming a form-locking or positive connection between the material of the slide bushes and the inner tube, by means of which the slide bushes are additionally secured on the inner tube.
An embodiment of the innovation is illustrated in the drawings and is described hereinafter. In the drawings.
Figure 1 shows a partly sectional view of a safety steering column provided with a telescopic tube assembly, Figure 2 shows a view in section taken along line Il-Il in Figure 1, Figure 3 shows the part of the inner tube of the telescopic assembly, which is fitted with slide bushes, Figure 4 shows a view in the direction indicated by the arrow IV, and Figure 5 shows the point V in Figure 3.
Secured to the upper end 1 of the safety steering column is a steering wheel, while the steering gear is provided at the lower free end 2 of the safety steering column.
The telescopic tube assembly which is used to construct the steering column for a motor vehicle comprises an outer tube 3 and an inner tube 4.
The inner tube is of triangular cross-section and, in the region of overlap between the outer tube and the inner tube, is provided with two slide bushes 5 which can be made from plastics material and which are injection moulded around the inner tube in a mould. The slide bushes may also comprise a castable bearing metal.
In the embodiment illustrated, in the region of the slide bushes, the inner tube has recesses 6 which are in the form of ball sockets and which, as can be seen in Figure 5, are filled with the material of the slide bush.
In order to form a non-rotatable connection between the outer tube and the inner tube, the cylindrical outer tube 3 which is pre-formed in a region 7 of the slide bushes, is formed onto the slide bushes which remain in their hardened condition and which therefore form the support means for the outer tube deformation process.
The frictional engagement between the outer tube and the inner tube in the region or çtheslide bushes can be such that displacement as between the outer tube and the inner tube takes place when the assembly is subjected to forces of the order of magnitude of < 10 kp.

Claims (6)

Claims
1. A telescopic tube assembly comprising an inner tube and an outer tube which, in the region of overlap, are non-rotatable and play-free relative to each other, and are mounted slidably on the longitudinal axis of the telescopic tube assembly, suitable for a buckling-resistant, adjustable-height motor vehicle steering column, in which, in the region of overlap with the outer tube, the inner tube has at least one slide bush which is injected or cast thereon.
2. A telescopic tube assembly according to claim 1, in which the inner tube has recesses which are distributed around the periphery thereof and which are filled with material of the slide bush.
3. A telescopic tube assembly according to claim 2, in which the recesses are in the form of ball sockets.
4. A process for the production of a sliding connection between the inner and outer tubes of a telescopic tube assembly, suitable for an adjustable-height motor vehicle steering column, in which the inner tube is introduced into a mould, at least one slide bush of plastics material or metal is injected or cast therearound, and, after the slide bush hardens, the outer tube is formlockingly formed onto the slide bush.
5. A telescopic tube assembly substantially as hereinbefore described with reference to Figures 1 to 5 of the accompanying drawings.
6. A process for the producing of a sliding connection between the inner and outer tubes of a telescopic tube assembly, substantially as hereinbefore described with reference to the accompanying drawings.
GB08302086A 1982-01-28 1983-01-26 Telescopic tube assembly suitable for an adjustable-height motor vehicle steering column Expired GB2114718B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823202669 DE3202669A1 (en) 1982-01-28 1982-01-28 TELESCOPIC TUBE, ESPECIALLY FOR A HEIGHT-ADJUSTABLE MOTOR VEHICLE STEERING COLUMN AND METHOD FOR ESTABLISHING A SLIDING CONNECTION BETWEEN THE INNER TUBE AND THE OUTER TUBE OF THE TELESCOPIC TUBE

Publications (3)

Publication Number Publication Date
GB8302086D0 GB8302086D0 (en) 1983-03-02
GB2114718A true GB2114718A (en) 1983-08-24
GB2114718B GB2114718B (en) 1985-06-05

Family

ID=6154092

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08302086A Expired GB2114718B (en) 1982-01-28 1983-01-26 Telescopic tube assembly suitable for an adjustable-height motor vehicle steering column

Country Status (7)

Country Link
DE (1) DE3202669A1 (en)
ES (1) ES279735Y (en)
FR (1) FR2520456B1 (en)
GB (1) GB2114718B (en)
IT (1) IT1205486B (en)
PT (1) PT76162B (en)
SE (1) SE456004B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4667530A (en) * 1985-07-22 1987-05-26 Etablissement Supervis Variable length shaft assembly particularly for motor vehicle steering shafts
ES2063643A2 (en) * 1991-05-24 1995-01-01 Torrington Co Adjustable length vehicle steering column
FR2793206A1 (en) * 1999-04-19 2000-11-10 Nastech Europ Ltd RETRACTABLE STEERING COLUMN FOR A VEHICLE AND TOLERANCE PART THEREFOR
CN102537039A (en) * 2010-12-21 2012-07-04 蒂森克鲁伯普雷斯塔公司 Gliding bush

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8534668U1 (en) * 1985-12-10 1986-02-06 Reiche & Co, 4937 Lage Telescopic tube
FI75728C (en) * 1986-02-10 1988-08-08 Orion Yhtymae Oy Device for moving in vertical movement of a seat, especially a patient chair.
DE3813422A1 (en) * 1988-04-21 1989-11-02 Lemfoerder Metallwaren Ag Telescopic steering shaft for motor vehicles
DE8806563U1 (en) * 1988-05-19 1988-06-30 Reiche & Co, 4937 Lage Manually height-adjustable vehicle steering column
DE3915991A1 (en) * 1989-05-17 1990-11-22 Lemfoerder Metallwaren Ag TRACK ROD FOR MOTOR VEHICLES
DE4008481A1 (en) * 1990-03-16 1991-09-19 Reiche & Co TRAINED AS TELESCOPIC TUBE, PREFERABLY ADJUSTABLE BY HANDCRAFT
DE9308933U1 (en) * 1992-06-19 1993-10-07 The Torrington Co. Ltd., Coventry, Warwickshire Steering column
DE4313766A1 (en) * 1993-04-27 1994-11-03 Suspa Compart Ag Adjustable column for chairs, tables or the like.
DE4329735A1 (en) * 1993-09-03 1995-03-09 Daimler Benz Ag Steering spindle for a motor vehicle and method for the production thereof
DE19758004A1 (en) * 1997-12-29 1999-07-01 Volkswagen Ag Process for the production of a plastic layer
GB2341914B (en) * 1998-09-23 2002-12-11 Nastech Europ Ltd Vehicle steering column assembly
DE10056619A1 (en) * 2000-11-15 2002-05-29 Wiederholt V W Werk Steering wheel height setting device has stepped recesses in region of slip and counter-slip surfaces
ES2362849B1 (en) * 2008-09-16 2012-03-15 Melchor Daumal Castellón LOW INTERMEDIATE SHAFT OF SLIDING OF THE PERFECTED STEERING COLUMN FOR CARS.
US8388455B2 (en) 2010-12-22 2013-03-05 Thyssenkrupp Presta Aktiengesellschaft Antifriction bushing
DE102014105822B4 (en) 2014-04-25 2016-03-03 Thyssenkrupp Presta Ag Steering shaft for a motor vehicle
DE102014218322A1 (en) * 2014-09-12 2015-12-17 Schaeffler Technologies AG & Co. KG Sliding bearing component and bearing arrangement with this
DE102022203223A1 (en) 2022-03-31 2023-10-05 Thyssenkrupp Ag Steering system for a motor vehicle

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB947624A (en) * 1961-12-09 1964-01-22 Vauxhall Motors Ltd Motor vehicle steering column
FR1453189A (en) * 1964-11-26 1966-04-15 Daimler Benz Ag Safety steering column shaft for vehicles, especially for motor cars
FR1530799A (en) * 1966-08-25 1968-06-28 Nissan Motor Shock absorbing device by plastic deformation, in particular for the protection of vehicles against collisions
GB1152294A (en) * 1967-05-08 1969-05-14 Gen Motors Ltd Steering Column Assemblies for Motor Vehicles
DE1630376C3 (en) * 1967-10-20 1975-08-14 Daimler-Benz Ag, 7000 Stuttgart Method for producing a safety steering system for motor vehicles
GB1229000A (en) * 1968-09-13 1971-04-21
JPS5675264A (en) * 1979-11-22 1981-06-22 Honda Motor Co Ltd Steering device for vehicle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4667530A (en) * 1985-07-22 1987-05-26 Etablissement Supervis Variable length shaft assembly particularly for motor vehicle steering shafts
ES2063643A2 (en) * 1991-05-24 1995-01-01 Torrington Co Adjustable length vehicle steering column
FR2793206A1 (en) * 1999-04-19 2000-11-10 Nastech Europ Ltd RETRACTABLE STEERING COLUMN FOR A VEHICLE AND TOLERANCE PART THEREFOR
CN102537039A (en) * 2010-12-21 2012-07-04 蒂森克鲁伯普雷斯塔公司 Gliding bush
CN102537039B (en) * 2010-12-21 2016-06-29 蒂森克鲁伯普雷斯塔公司 sliding sleeve

Also Published As

Publication number Publication date
SE456004B (en) 1988-08-29
GB8302086D0 (en) 1983-03-02
DE3202669A1 (en) 1983-08-04
SE8300455L (en) 1983-07-29
IT1205486B (en) 1989-03-23
PT76162A (en) 1983-02-01
IT8312415A0 (en) 1983-01-27
ES279735U (en) 1984-11-16
ES279735Y (en) 1985-06-01
GB2114718B (en) 1985-06-05
SE8300455D0 (en) 1983-01-28
PT76162B (en) 1985-11-12
DE3202669C2 (en) 1988-12-01
FR2520456A1 (en) 1983-07-29
FR2520456B1 (en) 1987-10-09

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 20030125