The present invention relates to a motor-driven electric power plant. A motor-driven power plant consists of a driving motor and a generator, their shafts being connected together. The driving motor drives the generator which thus supplies electric current. Such power plants are extremely useful for caravans and so on and the generator can be selected to provide different voltages. Usually only one voltage is used, either 12 or 24 volt. Known power plants are generally connected in a rather compli¬ cated manner and it may therefore be difficult to dismantle them for servicing and then re-assemble them. Furthermore, both generator and driving motor may be of special types and it may be difficult to obtain spares.

The present invention aims ^" at creating a motor-driven power plant in which the driving motor and the generator are connected by means of an assembly unit. The assembly unit may be cylindrical and hollow. The driving motor and the generator are placed at the ends of the unit, their shafts pro¬ jecting into the unit. The shafts are then joined together, preferably using a sleeve.

Thanks to the assembly unit, any driving motor can be connected to any generator.

Further characteristic features of the present invention are revealed in the following claims.

The present invention will be described in more detail with the aid of a photograph showing an exploded view of a motor-driven electric power plant.

The photograph shows a gasoline engine 1 with driving shaft 2. About its shaft, the driving motor is provided with a transverse surface 21 having a number of tapped holes 22. This surface is designed to cooperate with the

ring or disc 4 on an assembly unit 3. The ring has an external transverse, flat surface 5, a central hole 6 and through holes 7. The through holes 7 are intended to cooperate with the tapped holes 22. Opposite the ring 4 is a second ring or disc 8. The two rings are joined together by a spacer 18 which may be in the form of rods as shown in the photograph. It is also feasible for the spacer to be in the form of a pipe, preferably perforated to provide ventilation. The second ring 8 has a relatively large opening and a transverse surface 9 provided with tapped holes 10. The latter surface cooperates with a transverse surface 13 on the cover 12 of a generator 11. The transverse surface 13 is provided with through-holes 14 to cooperate with the holes 10. The generator includes stator windings 15 projecting axially. The generator also includes a rotor 16 with rotor shaft 17. The shown generator 11 is a standard generator of make Bosch. One protective cover of the generator is removed. Thus a generator is used in the motor-driven power plant, which is easily available and which can be used without modification, once one half of the protective cover has been removed.

The motor-driven power plant described above is assembled in the following manner: The disc 4 is secured to the motor 1 by bolts, not shown, which are inserted from the left in the holes 7 of the disc 4. The bolts are screwed into the holes 22 in the transverse surface 21. The transverse surface 5 of the ring or disc 4 will therefore abut the transverse surface 21. The shaft of the gasoline engine projects into the assembly unit through the central hole 6. The generator 11 is then connected to the lefthand ring or disc 8 by through-bolts, not shown, applied to the generator cover 12 from the left.. The protruding ends of the bolts are inserted into the tapped holes 10. Part of the annular disc 8 is provided with a cylindrical section acting as shield for the stator windings of the generator 11. Thus, the gasoline engine 1 and the generator 11 are firmly attached to each end of the assembly unit 3» the attachment being such that the two shafts 2 and 7 are aligned. The shafts are joined together by means of a sleeve 20 which may be provided with splines or other attachment means to ensure that the shafts are firmly joined. It may be advisable to provide one of the shafts with a fan to provide proper ventilation of the assembly unit 3.

It is clear from the above that an assembly unit 3 has been created, with the help of which gasoline engines and generators can easily be firmly joined together, the two shafts 2 and 17 being aligned. The assembly unit 3 enables any type of gasoline engine and generator to be joined and when this has been done their shafts can be connected, using a suitable con¬ necting member such as a sleeve. One is therefore no longer dependent on special gasoline motors and special generators.

OMP