AU726328B2 - Coupling device for vehicles - Google Patents
Coupling device for vehicles Download PDFInfo
- Publication number
- AU726328B2 AU726328B2 AU91525/98A AU9152598A AU726328B2 AU 726328 B2 AU726328 B2 AU 726328B2 AU 91525/98 A AU91525/98 A AU 91525/98A AU 9152598 A AU9152598 A AU 9152598A AU 726328 B2 AU726328 B2 AU 726328B2
- Authority
- AU
- Australia
- Prior art keywords
- coupling
- spring
- coupling device
- pin
- cable
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/24—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
- B60D1/26—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for remote control, e.g. for releasing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/01—Traction couplings or hitches characterised by their type
- B60D1/02—Bolt or shackle-type couplings
Description
1 Coupling device for vehicles The invention concerns a coupling device for vehicles with a coupling pin and an actuating lever with a cable for the releasing of the coupling by lifting the coupling pin.
The above discussion of documents, acts, materials, devices, articles and the like is included in this specification solely for the purpose of providing a context for the present invention. It is not suggested or represented that any of these matters formed part of the prior art base or were common general knowledge in the field relevant to the present invention as it existed in Australia before the priority date of each claim of this application A coupling device with the aforementioned features may be mounted in difficult access positions below the vehicle and at a great distance from its rear.
To release the coupling the coupling pin is lifted by an actuating arm that is fastened on a shaft mounted in the coupling body, while the actuating arm provided on the vehicle remote from the coupling engages rhe actuating arm by means of a cable. When a greater longitudinal force acts on the coupling pin via the coupling eyelet or when the coupling eyelet and the coupling pin are not at "900 to each other (troughs or crests), the coupling device cannot be released as o: "i usual by a simple manual operation of the actuating lever, because the coupling 20 pin wedges itself inside the coupling eyelet. On these occasions under practical conditions the drivers often use tools, for example a hammer or a pipe to extend the lever, resulting in damages to the actuating mechanism of the coupling device or in the tearing of the cable.
The object of the invention is so to construct a coupling device of the generic type, that a reliable releasing of the coupling is achieved even when the S:coupling pin is wedged in the coupling eyelet, while the actuating mechanism of the coupling and of the cable should be protected from being overloaded and getting damaged, According to one aspect of the invention there is provided a coupling device for vehicles with a coupling pin and an actuating lever with a cable intended for the releasing of the coupling by lifting the coupling pin, including a spring element, which is pre-tensioned and can be tensioned like a spring actuator only when the coupling pin is wedged in, provided between the '\pcoupling pin and the actuating lever.
V: MichelIe\BF\Specf91525.doc 1A In the following the invention is described in detail based on embodiments which are illustrated in the drawing.
S
W:AI.4che11ekBFkSpecfk91S25.dGC 2 Fig.1 shows in side view a coupling device and components for its remote actuation.
Each of Figs.2 to 4 show the longitudinal section of a spring element equipped with a mechanical spring in each case in different acting positions. Figs.5 to 7 concern a spring element which has a gas spring, while various operating positions are shown.
As it can be seen from Fig. 1, the coupling device has a conventional construction.
The coupling pin (not illustrated) is guided within the coupling body 4 in such a manner that it can be lifted and lowered. To release the coupling, the coupling pin is lifted by means of an actuating arm, which is fastened on a shaft that is mounted in the coupling body and can be rotated by a hand lever 5. Furthermore, a cable 2 engages the actuating arm (or another lever provided anywhere on the shaft), the cable being connected to an actuating lever 1 situated at an easily accessible position of the vehicle, by interposing a spring element 3 which can be tensioned like a spring actuator.
According to the embodiment shown in Figs.2 to 4, the spring element 3 has the following construction: Inside a cylindrical housing 6, which for the purpose of bolting onto the vehicle is provided with fastening pieces 6a, a helical spring operating like a compression spring, a pull tube 7 with a welded-on pull plate 7a, a pull rod 8 passing through the pull tube 7 and a restoring spring 9 are provided. The helical spring 3' rests on two discs 7b and 8b, while the disc 7b is held relative to the pull tube 7 by means of a circlip 7c. The other disc 8b, which in the active position according to Fig. 1 abuts against the pull plate 7a of the pull tube 7, is connected with the pull rod 8 via a split pin 8a, which pin is guided longitudinally displaceably in a slot 7d of the tie tube 7. The actuating lever 1, engaging the pull rod 8, is articulately connected by means of a double-shackle 10 to that fastening piece 6a of the housing which is on the right hand side of the drawing. The actuating lever 1 and the double shackle 10 can occupy a position past the dead centre that is limited by a stop la on the side of the lever (see Figs.3 and wherein this position forms a simple locking.
The cable 2 is connected with the cover 6b of the housing 6 via a cable sleeve 2a; the traction cable 2b of the cable 2 is fastened to the pull plate 7a of the pull tube When the spring element 3 has an alternative arrangement according to Figs.5 to 7, it has the following construction: The housing 6 with the fastening piece 6a and the cover 6b, to which once again the cable sleeve 2a of the cable 2 is joined, contains the pull tube 7 accommodating in this case the gas spring while the gas spring 3" works as a tension spring.
The traction cable 2b of the cable 2 is connected to the cylinder 3a of the gas spring The actuating lever 1 is connected both with the tie tube 7 and the piston rod 3b of the gas spring 3" by means of a bolt lb. In this case the locking of the actuating lever 1 past the dead centre position is formed by a sleeve 10a of the double-shackle 10, the sleeve abutting against the tie tube 7.
Figs.2 and 5 show the (1 St acting position "coupling closed", i.e. the coupling pin passes through the coupling eyelet of the trailing vehicle.
When the driver, for the purpose of releasing the coupling device, pivots the actuating lever 1 to the right and the coupling pin is not wedged in the coupling eyelet (normal case), the 2 nd) acting position "coupling open" will occur, according to Figs. 3 and 6. As this can be seen, during the pivoting movement of the actuating lever 1 the pull rod 8, the pull tube 7 and the helical spring 3' (Fig.4) and the pull tube 7 and the gas spring 3" are displaced merely relative to the housing 6, so that no change in the pretensioning force of the spring 3' or determined for the normal opening force of the coupling device, takes place.
Figs.4 and 7 show the other possible (3d) acting position "Coupling closed-coupling pin wedges in the coupling eyelet". In this case the driver tensions, by means of the actuating lever 1, the helical spring 3' or the gas spring 3" past their pre-tensioning force, so that this increased spring force acts in the pulling direction on the traction cable 2b of the cable 2 and consequently affects the coupling pin. This spring force releases the coupling pin from its wedged position with the coupling eyelet when the vehicle is slightly moved, for example, by jolting. On this occasion the helical spring 3' or the gas spring 3" is relieved, so that the spring element 3 finally assumes the 2 nd) acting position according to Figs.3 and 6.
The restoring spring 9 provided in the spring element according to Figs.2 to 4 assists a spring contained in all cases in the coupling body 4 when the coupling device is being closed.
An embodiment of the invention (not-illustrated) is such that a pneumatic cylinder is used as the spring element 3, the cylinder being connected to the compressed air supply of the vehicle. Incidentally, the invention may equally be realised by that the cable 2 will act in the direction of compression, wherein the traction cable 2b, guided in the cable sleeve 2a and engaging the actuating lever of the coupling pin, is to be dimensioned in accordance with the compressive forces to be transferred and the spring element 3 is used as a compression spring actuator.
List of reference numerals 1 Actuating lever la Stop lb Pin 2 Cable 2a Cable sleeve 2b Traction cable 3 Spring element 3' Helical spring 3" Gas spring 3a Cylinder 3b Piston rod 4 Coupling body 5 Hand lever 6 Housing 6a Fastening piece 6b Cover 7 Pull tube 7b Disc 7a Pull plate 7b Disc 7c Circlip 7d Slot 8 Pull rod 8a Split pin 8b Disc 9 Restoring spring Double shackle 10a Sleeve
Claims (4)
1. A coupling device for vehicles with a coupling pin and an actuating lever with a cable intended for the releasing of the coupling by lifting the coupling pin, including a spring element, which is pre-tensioned and can be tensioned like a spring actuator only when the coupling pin is wedged in, provided between the coupling pin and the actuating lever.
2. A coupling device according to claim 1, wherein the spring element includes a mechanical spring, which preferably is a helical spring.
3. A coupling device according to claim 1, wherein the spring element is a gas spring.
4. A coupling device substantially as herein before described with reference to the any one of the embodiments illustrated in the accompanying drawings. DATED: 11 July 2000 PHILLIPS ORMONDE FITZPATRICK Attorneys for: RINGFEDER VBG GmbH *o *o* o* W:\Michelle\BF\Spe\91525.doc
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19741578A DE19741578A1 (en) | 1997-09-20 | 1997-09-20 | Trailer coupling |
| DE19741578 | 1997-09-20 | ||
| PCT/DE1998/001969 WO1999015349A1 (en) | 1997-09-20 | 1998-07-08 | Coupling device for vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU9152598A AU9152598A (en) | 1999-04-12 |
| AU726328B2 true AU726328B2 (en) | 2000-11-02 |
Family
ID=7843085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU91525/98A Expired AU726328B2 (en) | 1997-09-20 | 1998-07-08 | Coupling device for vehicles |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP1015262B1 (en) |
| AU (1) | AU726328B2 (en) |
| CZ (1) | CZ293161B6 (en) |
| DE (2) | DE19741578A1 (en) |
| DK (1) | DK1015262T3 (en) |
| GR (1) | GR3036713T3 (en) |
| NZ (1) | NZ503508A (en) |
| WO (1) | WO1999015349A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19902355A1 (en) * | 1999-01-21 | 2000-08-03 | Oris Fahrzeugteile Riehle H | Trailer coupling |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE964834C (en) * | 1955-01-13 | 1957-05-29 | Werner Harkort | Trailer hitch |
| DE2458977A1 (en) * | 1974-12-13 | 1976-06-16 | Cramer Kupplung | Remotely operated coupling jaw - with blocking lever to lift and secure blocking bolt |
| DE8219259U1 (en) * | 1982-07-06 | 1982-10-07 | Cramer-Kupplung GmbH & Co KG, 4300 Essen | Tractor with remote control device for trailer couplings, in particular for tractor couplings |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3903751A (en) * | 1974-04-24 | 1975-09-09 | Beatrice Foods Co | Bicycle derailler with overload cable protection means |
| DE8021512U1 (en) * | 1980-08-12 | 1981-02-26 | Geistbeck, Walter, 8899 Deimhausen | Trailer coupling on tractor units |
-
1997
- 1997-09-20 DE DE19741578A patent/DE19741578A1/en not_active Withdrawn
-
1998
- 1998-07-08 AU AU91525/98A patent/AU726328B2/en not_active Expired
- 1998-07-08 DK DK98943694T patent/DK1015262T3/en active
- 1998-07-08 CZ CZ2000191A patent/CZ293161B6/en not_active IP Right Cessation
- 1998-07-08 DE DE59801341T patent/DE59801341D1/en not_active Expired - Lifetime
- 1998-07-08 NZ NZ503508A patent/NZ503508A/en not_active IP Right Cessation
- 1998-07-08 WO PCT/DE1998/001969 patent/WO1999015349A1/en active IP Right Grant
- 1998-07-08 EP EP98943694A patent/EP1015262B1/en not_active Expired - Lifetime
-
2001
- 2001-09-26 GR GR20010401570T patent/GR3036713T3/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE964834C (en) * | 1955-01-13 | 1957-05-29 | Werner Harkort | Trailer hitch |
| DE2458977A1 (en) * | 1974-12-13 | 1976-06-16 | Cramer Kupplung | Remotely operated coupling jaw - with blocking lever to lift and secure blocking bolt |
| DE8219259U1 (en) * | 1982-07-06 | 1982-10-07 | Cramer-Kupplung GmbH & Co KG, 4300 Essen | Tractor with remote control device for trailer couplings, in particular for tractor couplings |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59801341D1 (en) | 2001-10-04 |
| CZ293161B6 (en) | 2004-02-18 |
| EP1015262B1 (en) | 2001-08-29 |
| DE19741578A1 (en) | 1999-03-25 |
| AU9152598A (en) | 1999-04-12 |
| CZ2000191A3 (en) | 2000-06-14 |
| WO1999015349A1 (en) | 1999-04-01 |
| NZ503508A (en) | 2002-11-26 |
| EP1015262A1 (en) | 2000-07-05 |
| DK1015262T3 (en) | 2001-12-03 |
| GR3036713T3 (en) | 2001-12-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGA | Letters patent sealed or granted (standard patent) | ||
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |