System for opening and closing a flap

Inactive Publication Date: 2009-05-14
STABILUS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]Therefore, it is an object of the invention to provide an opening and closing system for flaps that overcomes the disadvantages described above and has a simple, space-saving construction with few structural component parts.
[0017]It is particularly economical in terms of space when the first drive device has a spindle drive driven in rotation by a rotary drive and which has a threaded spindle that is connected to the flap or to the stationary structural component part, and a spindle nut that is arranged on the threaded spindle that is connected to the stationary structural component part or to the flap.
[0018]To reduce the rotating speed of the rotary drive, the threaded spindle is driven in rotation by the rotary drive by a non-self-locking gear unit. Due to the non-self-locking construction of the gear unit, as well as the non-self-locking construction of the entire drive device, the flap is easily moved by hand when the first drive device is not activated. The rotary drive is preferably an electric motor.
[0019]When the rotary drive, threaded spindle, spindle nut and, the gear unit are all preferably arranged in a tubular housing, a compact constructional unit is achieved which protects these components.

Problems solved by technology

In systems that are driven electromechanically on one side it is disadvantageous that the electromechanical drives are outfitted with pressure springs, typically embodied as helical pressure springs, which must counterbalance the weight of the flap so that the motor has reasonable dimensions in terms of the vehicle construction and the flap can be safely held in a partially closed position or in the completely open position.
Further, it is disadvantageous with respect to installation space when the flap is stopped in desired positions by other braking elements or clamping elements.

Method used

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  • System for opening and closing a flap
  • System for opening and closing a flap
  • System for opening and closing a flap

Examples

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Embodiment Construction

[0042]FIG. 1 is a schematic view of a motor vehicle with a car body as a basic part 1 and a movable part 3 which closes or opens an aperture 2 in the basic part 1 and which is constructed as a hatchback, hereinafter flap 3. The flap 3 can also be a front hood, an engine hood, a vehicle door, or the like.

[0043]The flap 3 is preferably mounted in a horizontal swiveling axis 4 extending transverse to the vehicle. It should be noted that the swiveling axis need not be horizontal but many, for example, be vertical or any other angle. A first drive device 5 is arranged at one side of the flap 3 and a second drive device 6 is arranged at the opposite side of the flap 3.

[0044]FIG. 2 depicts one of the two drive devices, embodied as an electromechanical drive device, which is associated with the first drive device 5 in the following description for the sake of simplicity. It should be noted that the drive device shown in FIG. 2 may alternatively be associated with second drive device 6.

[0045...

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PUM

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Abstract

A system for opening and closing a motor vehicle, the flap is swivalably mounted along one of its edge areas at a stationary structural component part about a horizontal swiveling axis. A first drive device and a second drive device act in parallel to more like flap from a closed position into an open position. The first drive device is a non-self-locking drive device, and the second drive device comprises a cylinder filled with a fluid under pressure. An interior of the second drive device is divided by a piston into a first work chamber and a second work chamber, wherein a piston rod of the piston is guided outward through the first work chamber. A valve arrangement in the piston closes a flow connection between the first work chamber and the second work chamber in a stationary operating state of the flap.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The invention relates to a system for opening and closing a flap for a motor vehicle mounted along one of its edge areas to a stationary structural component so as to be swivelable around a horizontal swiveling axis. The flap is driven by a first drive device and a second drive device acting in concert so as to be movable from a closed position into an open position, wherein the first drive device is an electromechanical drive device and the second drive device is a hydraulic, pneumatic, or hydropneumatic drive device.[0003]2. Description of the Related Art[0004]Opening and closing systems for vehicle flaps are known for opening and closing flaps such as hatchbacks, trunk lids, engine hoods, doors, and the like in motor vehicles. Often, both sides of the flap are driven electromechanically so as to prevent warping of the flaps when the flaps are open and closed.[0005]Some drive systems are used that drive the flaps elec...

Claims

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Application Information

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IPC IPC(8): E05F15/12E05F11/08
CPCE05Y2900/546B60J5/102E05F15/616E05Y2900/50E05F15/611E05F15/12E05F15/53
InventorBOCHEN, MARIANDOFFING, FRANKMINTGEN, ROLFREIF, THOMAS
OwnerSTABILUS