Drive for a flap on a vehicle and a pedestrian protection means on a motor vehicle
First Claim
1. A drive for a flap provided on a vehicle, said drive comprising:
- an electric motor, an actuation shaft that is connected to said flap, a reduction gear by means of which said rotor of said electric motor is coupled to said actuation shaft, an energy accumulator by means of which said actuation shaft can be driven independently of said electric motor, said reduction gear being configured in such a way that said actuation shaft is driven in one rotational direction only by said energy accumulator, and said electric motor drives said actuation shaft in an opposite rotational direction, thereby supplying to said energy accumulator an energy that is needed to drive said actuation shaft in said rotational direction.
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Accused Products
Abstract
The invention relates to a drive for a flap provided on a vehicle, especially an engine hood. The drive comprises an electric motor, an actuation shaft that is connected to the flap, and a reduction gear by means of which the rotor of the electric motor is coupled to the actuation shaft. The drive further comprises an energy accumulator by means of which the actuation shaft can be driven independently of the electric motor. The reduction gear is configured in such a way that the actuation shaft is driven in a rotational direction only by the energy accumulator and the electric motor drives the actuation shaft in an opposite rotational direction, thereby supplying to the energy accumulator an energy that is needed to drive the actuation shaft in the rotational direction. The invention further relates to a pedestrian protection means provided on a vehicle and equipped with such a drive.
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Citations
20 Claims
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1. A drive for a flap provided on a vehicle, said drive comprising:
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an electric motor, an actuation shaft that is connected to said flap, a reduction gear by means of which said rotor of said electric motor is coupled to said actuation shaft, an energy accumulator by means of which said actuation shaft can be driven independently of said electric motor, said reduction gear being configured in such a way that said actuation shaft is driven in one rotational direction only by said energy accumulator, and said electric motor drives said actuation shaft in an opposite rotational direction, thereby supplying to said energy accumulator an energy that is needed to drive said actuation shaft in said rotational direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A pedestrian protection means provided on a vehicle, said means comprising:
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an engine hood and at least one drive for raising said engine hood, said drive comprising an electric motor, an actuation shaft that is connected to said flap, a reduction gear by means of which said rotor of said electric motor is coupled to said actuation shaft, an energy accumulator by means of which said actuation shaft can be driven independently of said electric motor, said reduction gear being configured in such a way that said actuation shaft is driven in a rotational direction only by said energy accumulator and said electric motor drives said actuation shaft in an opposite rotational direction, thereby supplying to said energy accumulator an energy that is needed to drive said actuation shaft in said rotational direction, said energy accumulator raising said engine hood in case of an accident out of an original position into a raised position and holding it in said raised position in an elastically yielding manner, and said electric motor being able to move said engine hood back into said original position. - View Dependent Claims (19, 20)
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Specification