BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
In the following, the invention is further explained according to drawings and examples embodiments. According to the drawings,
FIG. 1 depicts a view of a rear flap in an opened position,
FIG. 2 depicts an external view of a rear flap adjusting system,
FIG. 3 depicts a sectional view through the rear flap adjusting system, and
FIG. 4 depicts a detailed view of the sectional view.
DETAILED DESCRIPTION OF THE INVENTION
A three-dimensional detailed view of a motor vehicle 1 with an open rear flap 400 is shown in FIG. 1. The body 600 and the lockable opening 700 through the rear flap 400 in the body 600 of the motor vehicle 1 are only shown schematically. Apart from an external metal sheet, the shown rear flap 400 comprises a lower-able window pane 410 and an adjusting system with a first casing 100, a second casing 200, a first bearing 300 and a second bearing 500. Two such adjusting systems are shown in FIG. 1 which together affects an adjustment of the rear flap 400 between a closed position and an open position.
Further examples embodiments, not shown in the figures, provide for an adjusting system of a motor vehicle for the adjustment of another closing part, such as a rear flap 400. Here the adjusting system can be used for the adjustment of a trunk deck, a sliding or swinging door to close an opening of a motor vehicle body.
An adjusting system if depicted in a detailed view in FIG. 2. The adjusting system comprises a first oblong casing 100 extending along a lengthwise direction in the form of an external tube 100. A second casing 200, also in the form of an external tube 200, also extends oblong along the same lengthwise direction. The second external tube 200 comprises a smaller cross section than the first external tube; and the second external tube 200 is arranged at least partially and adjustably within the first external tube 100 in the mentioned lengthwise direction.
The first external tube 100 is attached on the side of the body, while the second external tube 200 is fastened on the side of the rear flap. A respective first and second bearing 300 and 500 are provided for the attachment in the depicted embodiment. The first bearing 500 is accordingly affixed on the first external tube 100 and may comprise two universal joints. The second bearing 300, which is affixed at the second external tube 200, may comprise a ball socket.
FIG. 3 comprises a sectional view through an adjusting system of FIG. 2. An electro-motor 150, a brake 140, a two stage planetary transmission 130, and an adjusting mechanism with a six-gear trapezoid spindle 110 and a spindle nut 210 rotating and running on a trapezoid spindle 110, are arranged at least partially within the first external tube 100. These elements, as shown in FIG. 3, influence the dynamic efficiency chain of the electro motor 150 on the adjustment of the rear flap 400. A brake 140 operates between the electro-motor 150 and the planetary transmission 130, which makes it possible for the braking to be cancelled either by a manual dynamic effect on the rear flap 400 or by the electro-motor force of the electro-motor 150. The brake 140 is thereby integrated within the first external tube 100 between the electro-motor 150 and the planetary transmission 130.
If the electro-motor 150 is, for example, controlled by an energy field efficiency transistor, not shown in FIG. 3 but preferably also located within a first external tube 100, the moment given off by the electro-motor 150 minus a lower friction of the brake 140 is transmitted on the two stage planetary transmission 130. The moment carried over by the planetary transmission 130 is given off to the trapezoid spindle 110 which is turning in dependence of the current of the electro-motor 150.
The spindle nut 210 is adjusted in an axial direction by the turning of the trapezoid spindle 110. The spindle nut 210 cooperates with the second external tube 200 in such a way that the second external tube 200 is adjusted in the same direction as the spindle nut 210. The spindle nut 210 may be fixated at the second external tube 200 or at a part firmly connected with the second external tube 200.
A cut-out of the sectional view of FIG. 3 is shown, enlarged, in FIG. 4. FIG. 4 depicts a spindle control 250 and an angular ball bearing 120 for the bearing of the turnable spindle 110. A connecting ring 160 is provided between the first external tube 100 and the second external tube 200. The first external tube 100 and the second external tube 200 are preferably controlled by turning in opposite directions.
Several springs 291, 292, 293 and 294 are arranged within the two external tubes 100, 200, whereby at least two of the springs 291, 292, 293 or 294 are switched in series and/or at least two of the springs 291, 292, 293294 in parallel. All springs 291, 292, 293 and 294 thereby operate in a length-wise direction to support an opening of the rear flap 400 against the weight of the rear flap 400. Additionally, at least a guiding element 290 is preferably provided for the control of the spring motion.
In the example embodiment of FIG. 3, a switch-able brake is provided in the dynamic efficiency chain between the motor 150 and the spindle 110, which can also be described as a clutch. If, for example, in place of a planetary transmission 130, a spur wheel back-geared motor is used, the switchable brake 140 is developed as a clutch in such a way that an energy chain between spindle 110 and motor 150 is interrupted during inactive status.
However, if, on the other hand, a planetary transmission 130 is used; for example, a ring gear for a power transmission from motor 150 to spindle 110; running planetary wheels are braked in the ring gear.
The springs 291, 291 and 293 are arranged interpenetrating to develop a compact structure of the adjusting system. An additional case 800 can be provided for the interpenetration which avoids a friction of the springs 291, 292 and 293 and enables a sliding control. For this, the case 800 is arranged between two of the springs 291, 292 and 293 so that the springs 291, 292 and 293 and the case 800 are radially interpenetrating.
Patent Application
20070296243
