DE7534366U - REMOTE CONTROLLED MODEL DRIVEN BY A COMBUSTION ENGINE, IN PARTICULAR AIRPLANE MODEL - Google Patents

Description

Licht, Schmidt, Hansmann & Herrmann Patent Attorneys,

Munich: Dipl.-Ing. Martin Light \ /

Dipl.-Wirtsch.-Ing. Axel Hansmann Dipl.-Phys. Sebastian Herrmann

'Patent attorneys light. Hansmann. Herrmann -8 Munich 2 Theresienstr. 33 ' OppenaUI Dr. Reinhold Schmidt

8 Munich 2 Theresienstraße 33

He / Lü

WALTER DIETERICH 763 Lahr / Black Forest In damage wages 28

Remote controllable, powered by an internal combustion engine

model

The innovation concerns a remotely controllable, by an internal combustion engine Driven model, in particular flight model, in which an electrical receiver for the radio control signals can be controlled by the receiver Servos for operating control devices and an accumulator for power supply is provided.

In the previously known models of the aforementioned type, one is relative Large accumulator required to ensure sufficient power supply for the receiver and servos for a longer period of time is. In flight models, the smallest possible batteries are used to save weight, but they do so after a few Flights are exhausted and then need to be recharged.

Telephone (089) 281202 Telegram üpatli Munich Bayer Vereinsbank Munich. Account no. 882495 Postscheck Munich No. 163397-802

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The innovation is now based on the task of creating a model of the initially mentioned type in such a way that even when using an accumulator with a relatively small capacity a sufficient Power supply for the consumers built into the model is secured for a long time.

This task is achieved in that a through the Internal combustion engine-driven electric generator as an additional power source for charging the accumulator and for supplying it the electrical consumer is installed. In the model according to the innovation, the electric generator delivers when the internal combustion engine is running the current required to feed the electrical consumers as well as additional charging current for charging the accumulator. The model according to the innovation can thus be operated for a long time without using the accumulator from a mains power source a charger needs to be charged. In the model according to the innovation, an accumulator with a relatively low capacity can be used because the accumulator only takes over the power supply of the consumers provided in the model if the motor fails got to. While in the previously known models with glow igniter engines, the glow plug uses a special ignition battery had to be heated up before the start, after the innovation for the model, the glow plug built into the model can be used to heat up Accumulator can be used because it is recharged when the engine is running. The rotor of the electric generator is attached in particular to the crankshaft of the internal combustion engine, while the stator is attached to the housing of the internal combustion engine is flanged. This type of fastening enables the electrical generator to be attached if the appropriate adapters are used.

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tors ar! all standard combustion engines for model making.

The stator is expediently enclosed by a bushing which has an axially protruding flange ring which fits onto the crankshaft bearing housing of the internal combustion engine is pushed. The stator can therefore easily be withdrawn from the internal combustion engine again if necessary will. The crankshaft expediently extends through a central bore of the rotor, which is formed by a spline connection is anchored non-rotatably on the rotor. With this type of anchoring, the rotor can easily be withdrawn from the crankshaft again will.

Further advantageous design features are set out in the subclaims claimed.

An embodiment of the innovation will now be explained with reference to the drawings, in which show:

Fig. 1 partially in section an internal combustion engine with a flange Generator,

Fig. 2 is a front view of the generator,

Fig. 3 is a section along the line 3-3 in Fig. 2 and

FIG. 4 shows a section similar to FIG. 3, but in which the rotor has been omitted.

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Fig. 1 shows a commercially available internal combustion engine 1, which as Drive motor is built into a model, in particular in a flight model. The internal combustion engine 1 has an on the crankcase 2 Ku r attached or forming a unit with the latter in the case of shaft bearing housings 3, from the end face 4 of which the crankshaft 5 protrudes outward. At the outer end of the crankshaft 5 is a thread 6 provided, on which a propeller can be attached, for example with the help of screws. That limited by the end face 4 The end of the crankshaft bearing housing 3 has a cylindrical or slightly conical peripheral surface 7.

An electric generator 8 is built onto the internal combustion engine 1, the rotor 9 of which is fastened to the crankshaft 5 and the stator 10 of which is fastened to the crankshaft bearing housing 3. The rotor 9 has a Central bore 11, the diameter of which corresponds to the diameter of the crankshaft is adapted in the area of the end face 4. If the central hole 11 has a larger diameter than the crankshaft 5, appropriately dimensioned adapter bushings can be used in the rotor 9. From the central bore 11 of the rotor 9 or the adapter bushing inserted into the rotor 9 has an axially extending keyway 12 cut out.

To fasten the rotor 9 on the end face 4, the rotor 9 pushed onto the crankshaft 5 and anchored in a rotationally fixed manner on the rotor 9 by inserting a key into the keyway 12, so that the Rotor 9 rotates with crankshaft 5.

The stator 10 has a one made of insulating material Bobbin 14 wound annular stator winding 15 on,

5 -

that of two annular stator laminations 16 from a suitable magnetic material is enclosed. The laminated stator bodies 16 are pushed onto the bobbin 14 and point on the inside spaced tabs 17 and on the Outside each have a cylindrical shell part 18. The one at the cylindrical inner wall of the bobbin 14 abutting tabs 17 mesh like teeth, while the jacket parts 18 the stator winding 15 cover. The tabs 17 delimit the rotor 9 while leaving a small air gap receiving the cylinder interior 20th

The one consisting of the stator winding, coil formers and laminated stator cores The cylindrical unit is pressed into a bushing 21, preferably made of aluminum, which surrounds this unit. the Bushing 21 has an axially protruding flange ring 22 which is press fit onto the circumferential surface 7 of the crankshaft bearing housing 3 sits and thereby firmly anchors the stator 10 on the internal combustion engine 1.

The rotor 9, which contains magnetic poles not shown, and the The stator 10 are electrically matched to one another in such a way that at the nominal speed of the internal combustion engine, the generator is suitable for the application supplies the required power (current, voltage), which is tapped from the connection terminals of the stator winding. at the electric generator shown in the figures is an alternating current generator. The one supplied by the generator Alternating current must therefore still be rectified, as the electrical consumers provided in the model (radio receiver, Servos and the like) can be operated with direct current.

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A power supply regulator 23 is preferably attached to the stator 10 of the generator, in which the connection terminals of the stator winding 15 are arranged and which contains the switching elements required for powering the electrical loads in the model and for charging the accumulator. The power supply regulator is expediently designed in such a way that when the generator is at a standstill, the accumulator takes over the power supply of the consumers provided in the model, while with the engine running the electric generator takes over the power supply of the electrical consumers and additionally supplies charging current for the accumulator. The power supply regulator is expediently arranged in the form of an integrated circuit on a circuit board which is attached to the socket 21. A switch leading to the glow plug of the internal combustion engine can also be provided in the power supply regulator 23, via which the glow plug is supplied with power from the accumulator to start the engine and which is preferably switched off automatically as soon as the engine is running and the generator is supplying power.

In the embodiment shown, the innovation is the generator attached to the combustion engine. However, the generator can also be installed in the crankshaft housing during the manufacture of the internal combustion engine be accommodated.

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Claims (10)

PROTECTION CLAIMS 1 . Remotely controllable model driven by an internal combustion engine, in particular a flight model, in which an electrical receiver for the radio control signals, servos that can be controlled at the front of the receiver to operate control devices and an accumulator for power supply is provided, characterized in that in the ~ - 'Model an electric one that can be driven by the internal combustion engine i) Generator as an additional power source for charging the accumulator and is installed to feed the electrical consumers. 2. Model according to claim 1, characterized in that the rotor of the electric generator on the crankshaft of the internal combustion engine attached and the stator is flanged to the housing of the internal combustion engine. 3. Model according to claim 2, characterized in that the stator is enclosed by a bushing which has an axially protruding flange ring which is attached to the crankshaft bearing housing of the internal combustion engine is pushed. 4. Model according to claim 2 or 3, characterized in that the The crankshaft extends through a central bore of the rotor which is anchored in a rotationally fixed manner on the rotor by a spline connection. 5. Model according to claim 4, characterized in that the keyway the key connection is recessed from the central bore of the rotor. 7534368 10.I & 76 6. Model according to claim 3, characterized in that the stator winding is arranged on a coil body made of insulation material, which is enclosed by two annular stator laminations, which are pushed onto the end faces of the bobbin and intermeshing like a tooth within the central opening of the Spulenkcr pers Have tabs and have cylindrical jacket parts that cover the stator winding and that are flanged to the internal combustion engine Socket are enclosed. 7. Model according to any one of the preceding claims, characterized in that a power supply regulator is attached to the stator of the generator is grown. 8. Model according to claim 7, characterized in that the power supply regulator is arranged in the form of an integrated circuit on a circuit board. 9. Model according to claim 1, characterized in that the generator is housed in the crankcase of the internal combustion engine. 75343Sf 10.96.76