GB2027163A - Transmission shaft with a splined coupling - Google Patents
Transmission shaft with a splined coupling Download PDFInfo
- Publication number
- GB2027163A GB2027163A GB7918836A GB7918836A GB2027163A GB 2027163 A GB2027163 A GB 2027163A GB 7918836 A GB7918836 A GB 7918836A GB 7918836 A GB7918836 A GB 7918836A GB 2027163 A GB2027163 A GB 2027163A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- transmission shaft
- torque transmission
- bush
- tubes
- 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.)
- Withdrawn
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 23
- 230000008878 coupling Effects 0.000 title claims abstract description 12
- 238000010168 coupling process Methods 0.000 title claims abstract description 12
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 239000013536 elastomeric material Substances 0.000 claims 1
- 230000008030 elimination Effects 0.000 claims 1
- 238000003379 elimination reaction Methods 0.000 claims 1
- 238000004804 winding Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- 229920003023 plastic Polymers 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000132092 Aster Species 0.000 description 1
- 239000004959 Rilsan Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/22—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
- F16D3/06—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
A torque transmission shaft for motor vehicles comprises first and second sheet metal tubes (3, 7) having respective inter-engaging splined portions (5, 8), the tubes (3, 7) being coated externally and internally, respectively, with a low friction coefficient plastics material; the splined end of the second tube (7) being rolled, after coupling, to form a guide and support neck (9) to eliminate radial play. A dust-excluding bush (11) may alternatively be fitted in place of the support neck (9). <IMAGE>
Description
SPECIFICATION
Transmission shaft with a splined coupling
The present invention relates to a transmission
shaft with a splined coupling for use in, for
example, motor vehicles.
More particularly, the invention is concerned with a torque transmission shaft of the type comprising two sheet metal tubes coupled by the inter-engagement of respective splined portions adjacent one end of each tube, one tube having an internal diameter substantially equal to the
external diameter of the other tube.
It is known to manufacture torque transmission shafts from thin sheet metal tubes of different diameters, one end of each tube being formed with splines made by a rolling process. The diameters of the tubes differ sufficiently to allow one tube to be inserted into the other to form a telescopic shaft with a torque coupling between the tubes which permits relative axial sliding between the tubes.
One such example of a splined torque
transmission shaft is that made by "Grob"of
Mannedorf, Switzerland.
The torsional flexibility imparted to a transmission shaft of this type is dependent upon its practical applications, for example, to a motor vehicle: too high a rigidity adversely affects the operation of various parts of the transmission. In
most cases, therefore, it is necessary to use a flexible coupling between the tubes constituting the shaft.
The applicants' Italian Patent Application No.
69622--A/77 describes a coupling of this type for a torque transmission shaft for motor vehicles, comprising a first thin sheet metal tube having splines at one of its ends engaging splines at one end of a second thin sheet metal tube having an internal diameter which is slightly larger than the external diameter of the first tube, and a third thin sheet metal tube having an internal diameter larger than the external diameter of the second tube, and splines at one of its ends engaging at least one elastomeric ring inserted between the second and third tubes.
A coupling of this type, however, has the disadvantage of being rather heavy, due to the presence of three tubes inserted one inside the other, while, at the same time, the relative high number of components increases the production cost.
An object of the present invention is to provide a torque transmission shaft which avoids the aforesaid disadvantages.
According to the present invention there is provided a torque transmission shaft for motor vehicles, of the aforesaid type, characterised in
that said one tube is lined by, and said other tube
is coated externally by, a coating having a low
coefficient of friction.
The invention will now be more particularly
described by way of example, with reference to
the accompanying drawings, in which:
Figure 1 is a fragmentary longitudinal sectional
view of a first embodimentof a torque
transmission shaft according to the invention;
Figure 2 is an enlarged fragmentary view of a detail of the shaft of Figure 1;
Figure 3 is a fragmentary longitudinal sectional view of a second embodiment of a torque transmission shaft according to the invention, and
Figure 4 is an enlarged fragmentary view of a detail of the shaft of Figure 3.
Referring now to the drawings, there is shown a torque transmission shaft comprising first and second thin sheet metal tubes 3, 7 respectively, which are torsionally coupled by the interengagement of respective splined portions 5, 8 formed adjacent the respective ends of each tube 3, 7. The splined portion of the second tube 7 has an internal diameter which is substantially equal to the external diameter of the splined portion 6 of the first tube 3. The splined portions 5, 8 are formed by rolling, the internally splined portion 8 of the second tube 7 fitting closely over the externally splined portion 5 of the first tube 3.
As a result of this close fit, the tubes 3, 7 form a shaft with a rigid torque coupling as regards rotational movement, while allowing telescopic relative axial sliding between the tubes 3, 7.
Aster coupling the tubes 3, 7 together, the second tube 7 is rolled at its end adjacent the splined portion 8 to form a guide and support means, which, in the embodiment of Figures 1 and 2, comprises a swaged neck 9, the internal diameter of which is substantially equal to the external diameter of the first tube 3, permitting axial sliding by the tubes 3, 7 while substantially eliminating any radial play between the tubes 3, 7 due to differences in the diameter of the tubes.
In the second embodiment, shown in
Figures 3 and 4, the end of the second tube 7
adjacent the splined portion 8 has an external
circumferential groove 10 adapted to receive a
dust-sealing muff 11 which protects the zone of
permitted axial sliding against the ingress of dirt,
and internal circumferential groove 12 adapted to
receive guide and support means comprising a
bush 13. The bush 13 is an elastomeric band
which, on assembly of the shaft, is wound onto
the first tube 3 until it has an external diameter
which corresponds to the internal diameter of the
internal groove 12. The bush 13 is kept in place by
a metal retaining ferrule 1 4.
The elastomeric band which forms the bush 1 3 is provided with a toothed axial profile which
ensures the recovery of any play between the
tubes 3, 7, and avoids any sticking which may be
caused by possible differences in the diameters of
the tubes.
A coating of a plastics material with a low
coefficient of friction, for example, RILSAN (Trade
Mark) is applied to the co-operating external and
internal surfaces of the tubes 3, 7 respectively and
assists the relative axial sliding of the tubes by
reducing the frictional forces.
In known manner, the free end (not shown) of
each tube 3, 7 has a universal coupling joint.
Claims (8)
1. Torque transmission shaft of the type comprising two sheet metal tubes coupled by the inter-engagement of respective splined portions adjacent one end of each tube, one tube having an internal diameter substantially equal to the external diameter of the other tube, in which said one tube is lined by, and said other tube is coated externally by a coating having a low coefficient of friction.
2. Torque transmission shaft as claimed in
Claim 1, in which guide and support means are provided adjacent the splined end of one of the tubes for the substantial elimination of radial play.
3. Torque transmission shaft as claimed in
Claim 2, in which guide and support means comprise a neck formed by rolling the end of said one tube, after coupling of said tubes so that the internal diameter of said neck is substantially equal to the external diameter of said other tube.
4. Torque transmission shaft as claimed in
Claim 2, in which the guide and support means comprise an elastomeric bush which engages the end of said one tube.
5. A torque transmission shaft as claimed in
Claim 4, in which said bush is kept in position relative to said one tube by an internal circumferential groove, at the end of said tube and by a retaining ferrule.
6.Torque transmission shaft as claimed in
Claim 4 or Claim 5, in which said bush is formed by winding a band of elastomeric material onto the other tube until the bush has an external diameter corresponding to the internal diameter of said groove.
7. Torque transmission shaft as claimed in
Claim 4, Claim 5 or Claim 6, in which said bush has a toothed axial profile.
8. A torque transmission shaft for motor vehicles, as herein described with reference to, and as shown in, the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT68788/78A IT1109586B (en) | 1978-07-27 | 1978-07-27 | TRANSMISSIONAR SHAFT WITH ROLLED GEAR |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2027163A true GB2027163A (en) | 1980-02-13 |
Family
ID=11310579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7918836A Withdrawn GB2027163A (en) | 1978-07-27 | 1979-05-30 | Transmission shaft with a splined coupling |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR2432112A1 (en) |
| GB (1) | GB2027163A (en) |
| IT (1) | IT1109586B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0047107A1 (en) * | 1980-08-29 | 1982-03-10 | Brd Company Limited | Splined joints |
| GB2209318A (en) * | 1987-09-02 | 1989-05-10 | Manuel Munoz Saiz | A monorail vehicle |
| FR2650036A1 (en) * | 1989-06-24 | 1991-01-25 | Gkn Automotive Ag | CONNECTING SLEEVE ASSEMBLY DEVICE FOR TUBULAR SHAFT |
| FR2699976A1 (en) * | 1992-12-30 | 1994-07-01 | Daumal Castellon Melchor | Telescopic shaft. |
| GB2297372A (en) * | 1995-01-27 | 1996-07-31 | Dana Corp | Drive line slip joint assembly |
| ES2116163A1 (en) * | 1992-12-30 | 1998-07-01 | Daumal Castellon Melchor | Improvements to Patent No. P9202654(0) for telescopic shaft |
| GB2387424B (en) * | 2002-02-15 | 2004-08-04 | Visteon Global Tech Inc | A shaft to transfer torque in a vehicle |
| EP1704938A1 (en) * | 2005-03-25 | 2006-09-27 | American Axle & Manufacturing, Inc. | Method for manufacturing a slip joint assembly with coated splines |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2068113B1 (en) * | 1992-12-30 | 1997-05-16 | Castellon Melchor Daumal | TELESCOPIC TREE. |
| ES2129322B1 (en) * | 1996-04-18 | 2000-02-01 | Castellon Melchor Daumal | IMPROVEMENTS IN TELESCOPIC TREES. |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE917110C (en) * | 1938-10-30 | 1954-08-26 | Albert Ag Chem Werke | Plain bearings with plastic film |
| FR1331015A (en) * | 1962-08-03 | 1963-06-28 | tubular transmission element with axial splines and method of making the same | |
| FR1469822A (en) * | 1966-02-22 | 1967-02-17 | Dana Corp | Advanced sliding linkage transmitting torque |
| US3367142A (en) * | 1966-05-31 | 1968-02-06 | Dana Corp | Slip spline assembly |
| DE1910284B2 (en) * | 1969-02-28 | 1971-05-19 | PTO SHAFT | |
| DE7016023U (en) * | 1970-04-28 | 1971-01-21 | Gelenkwellenbau Gmbh | LONGITUDINAL SLIDING SPLINES |
-
1978
- 1978-07-27 IT IT68788/78A patent/IT1109586B/en active
-
1979
- 1979-05-30 GB GB7918836A patent/GB2027163A/en not_active Withdrawn
- 1979-06-12 FR FR7915027A patent/FR2432112A1/en not_active Withdrawn
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0047107A1 (en) * | 1980-08-29 | 1982-03-10 | Brd Company Limited | Splined joints |
| GB2209318A (en) * | 1987-09-02 | 1989-05-10 | Manuel Munoz Saiz | A monorail vehicle |
| FR2650036A1 (en) * | 1989-06-24 | 1991-01-25 | Gkn Automotive Ag | CONNECTING SLEEVE ASSEMBLY DEVICE FOR TUBULAR SHAFT |
| ES2116163A1 (en) * | 1992-12-30 | 1998-07-01 | Daumal Castellon Melchor | Improvements to Patent No. P9202654(0) for telescopic shaft |
| GB2273969A (en) * | 1992-12-30 | 1994-07-06 | Melchor Daumal Castellon | Telescopic shaft for a steering column |
| GB2273969B (en) * | 1992-12-30 | 1995-08-23 | Melchor Daumal Castellon | Telescopic shaft for a steering column |
| FR2699976A1 (en) * | 1992-12-30 | 1994-07-01 | Daumal Castellon Melchor | Telescopic shaft. |
| GB2297372A (en) * | 1995-01-27 | 1996-07-31 | Dana Corp | Drive line slip joint assembly |
| US5720102A (en) * | 1995-01-27 | 1998-02-24 | Dana Corporation | Method for making a drive line slip joint assembly |
| GB2297372B (en) * | 1995-01-27 | 1998-05-20 | Dana Corp | Method for making a drive line slip joint assembly |
| GB2387424B (en) * | 2002-02-15 | 2004-08-04 | Visteon Global Tech Inc | A shaft to transfer torque in a vehicle |
| EP1704938A1 (en) * | 2005-03-25 | 2006-09-27 | American Axle & Manufacturing, Inc. | Method for manufacturing a slip joint assembly with coated splines |
| US8230710B2 (en) | 2005-03-25 | 2012-07-31 | American Axle & Manufacturing, Inc. | Method for forming a slip joint assembly with coated splines |
Also Published As
| Publication number | Publication date |
|---|---|
| IT7868788A0 (en) | 1978-07-27 |
| IT1109586B (en) | 1985-12-23 |
| FR2432112A1 (en) | 1980-02-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |