Fuel filler cap system for a motor vehicle

Abstract

Energy tank flap system (2) of a motor vehicle (1) with a support (4), an energy tank flap (3) which is mounted rotatably on the support (4) and is designed to be movable between a closed position and an open position, and a movement mechanism (6) which is designed to move the energy tank flap (3) from the closed position to the open position and back to the closed position, wherein the movement mechanism (6) has an electric drive element (7) and a mechanical deployment element (8), wherein the mechanical deployment element (8) is designed to exert a deployment force (14) on the energy tank flap (3) towards the open position, wherein the electric drive element (7) is designed to exert a guide force (15) on the energy tank flap (3) which counteracts the deployment force (14) when the energy tank flap (3) is moved from the closed position to the open position, and is designed to exert a return force (16) which overcomes the deployment force (14) when the energy tank flap (3) is moved from the open position to the closed position, and wherein the electric drive element (7) is arranged at a predetermined distance (17) from the support (4) and / or from the energy tank flap (3) and is kinematically connected to the energy tank flap (3) by means of a traction device (18).

Description

TECHNICAL FIELD

[0001] The invention relates to an energy tank flap system for a motor vehicle, having a carrier, an energy tank flap which is pivotably mounted on the carrier and is adapted to be moved between a closed position and an open position, and a movement mechanism which is adapted to move the energy tank flap from the closed position to the open position and back to the closed position. BACKGROUND

[0002] Such an energy tank flap system is known, for example, from DE 102017009616 Al, which has an energy tank recess and an energy tank flap with a hinge arm, which is hinged to the energy tank recess, wherein the energy tank flap can be pivoted by means of the hinge arm from a closed position (the energy tank recess is at least partially closed) to an open position (the energy tank recess is accessible from the outside for refuelling the motor vehicle). As a rule, the energy tank flap is movably mounted on a carrier, and in addition, the entire movement mechanism or at least one electric drive element, which is part of the movement mechanism, for moving the energy tank flap from the closed position to the open position and back, is also mounted on the carrier. This practice of mounting the movement mechanism or at least the electric drive element on the carrier has the disadvantage that a corresponding installation space must be provided directly on the energy tank recess to accommodate the carrier and the entire movement mechanism, thus setting narrow boundary conditions for the design. SUMMARY

[0003] It is the task of the invention to create a solution for providing a motor vehicle with an energy tank flap system in a structurally simple manner, by means of which the installation space that has to be provided on the energy tank recess can be reduced to a minimum and greater flexibility in terms of the installation situation can be ensured compared to known energy tank flap systems.

[0004] According to the invention, this task is solved by an energy tank flap system for a motor vehicle having the features according to the invention.

[0005] According to the invention, the energy storage tank flap system of a motor vehicle has a support, an energy storage tank flap which is rotatably mounted on the support and is designed to be movable between a closed position and an open position, and a movement mechanism which is designed to move the energy storage tank flap from the closed position to the open position and back to the closed position. The movement mechanism has an electric drive element and a mechanical deployment element, wherein the mechanical deployment element is designed to exert a deployment force on the energy storage tank flap towards the open position. Furthermore, the electric drive element is designed to exert a guide force which counteracts the deployment force when the energy storage tank flap is moved from the closed position to the open position, wherein the electric drive element is designed to exert a return force on the energy storage tank flap which overcomes the deployment force when the energy storage tank flap is moved from the open position to the closed position. According to the invention, the electric drive element is arranged at a predetermined distance from the support and / or from the flap and is movably connected to the energy storage tank flap by means of a traction device. The return force is greater than the guide force and the deployment force, whereby the deployment force is greater than the guide force.

[0006] Advantageous and expedient embodiments and further embodiments of the invention result from the following technical features.

[0007] It should be noted that, in the meaning of the invention, the term "energy storage" is to be understood as refueling of a motor vehicle with conventional fuel or hydrogen and charging of a battery of a motor vehicle, i.e. so-called electric vehicles, wherein the energy storage tank flap of the energy storage tank flap module according to the invention covers a refueling neck which is connected to the energy storage tank and is closed by the energy storage tank flap, or a charging socket for a charging plug.

[0008] The invention provides an energy storage tank flap system of a motor vehicle which is characterized by a simple structure and a particular solution for the electric drive element. According to the invention, the electric drive element is arranged at a predetermined distance from the support and / or from the energy storage tank flap, whereby the electric drive element does not require any installation space directly on the support or the energy storage tank flap, whereby the electric drive element does not occupy installation space on the energy storage tank recess. According to the invention, the predetermined distance is overcome by means of a traction device, so that the electric drive element can be arranged flexibly in the vicinity of the energy storage tank flap, but not necessarily directly on the energy storage tank flap.

[0009] In an embodiment of the invention, the traction device is connected to the energy storage tank flap by means of a transmission element. The gear element can be designed, for example, as at least one steering shaft or at least one steering pulley, so that the electric drive element can be arranged very flexibly and at a distance from the support and the energy storage tank flap.

[0010] In the design of the application it is particularly advantageous if the transmission element is designed as a rotatably mounted disc-shaped element. For example, with the aid of the disc-shaped element the rope-like traction means can be wound up and unwound very effectively, even steered. The steering of the traction means can be effected by means of corresponding steering shafts or steering pulleys, which can be provided outside the disc-shaped element, but which, unlike the disc-shaped element, are not used for winding up or unwinding the rope-like traction means.

[0011] In another embodiment the application provides that the disc-shaped element is rotatably mounted on the support. Alternatively, it is also conceivable to arrange the disc-shaped element at a distance from the support or the energy storage tank cover plate, for which a compact arrangement of the disc-shaped element on the support is preferred.

[0012] In another embodiment of the application it is particularly advantageous for the cost-effective design of the traction means if the traction means is designed as a rope having a first end and a second end, wherein the first end of the rope is connected to the motor drive element and the second end of the rope is connected to the energy storage tank cover plate and the rope is fixed between its first end and its second end at a fixing point on the disc-shaped element.

[0013] In this regard, in another embodiment it is provided that the disc-shaped element has a journal which extends from the center of the disc-shaped element and in the axial direction of the disc-shaped element, wherein the rope portion located between the first end and the fixing point is guided around the journal. This guiding around of the rope around the journal makes it possible for a transmission ratio or a reduction to occur, whereby, depending on the design, the diameter of the disc-shaped element and the journal can have a corresponding influence on the torque and the speed.

[0014] In this regard, in another embodiment of the application it is provided that the journal has a diameter of a shaft and the disc-shaped element has a diameter of a disc, whereby the diameter of the shaft is smaller than the diameter of the disc. In this way a reduction transmission ratio occurs, whereby the torque on the disc-shaped element increases and the speed decreases.

[0015] According to another embodiment the application provides that the traction means comprises a first rope and a second rope, wherein the first rope connects the motor drive element in a kinematically coupled manner to the disc-shaped element and the second rope connects the disc-shaped element in a kinematically coupled manner to the energy storage tank cover plate. For example, in this way a complex guiding of an integral rope from the diameter of the journal to the diameter of the disc-shaped element is not necessary, whereby the structure is correspondingly simplified and more cost-effective.

[0016] For example, in order to be able to influence the opening or closing speed of the energy storage tank cover plate, the application provides in another embodiment that the disc-shaped element has a winding contour designed for winding up and unwinding at least one portion of the traction means.

[0017] In this regard, the application provides in a corresponding embodiment that the winding contour has at least two successive transitions to different radii from one another or is arranged eccentrically. This asymmetric winding contour shape by different radii makes it possible, for example, when the energy storage tank cover plate is moved into the closed position, that the traction means are pulled with greater force on the last movement path in order to pull the energy storage tank cover plate sealingly to the seal.

[0018] As a further embodiment of the traction means, the application provides in an embodiment that the traction means comprise a rope loop and a rope, wherein the rope loop is wound on a journal extending from the center of the disk-shaped element and extending in the axial direction of the disk-shaped element and on a drive pin of the electric drive element, wherein the rope couples the disk-shaped element in a kinematically coupled manner to the energy storage tank cover plate. This embodiment allows the realization of a "infinite" rope loop and the setting of the guidance, so that, for example, the disk-shaped element can be moved in opposite rotational directions or the rotational movement can be transmitted on two shafts.

[0019] In addition, the application provides in an embodiment that the traction means comprise a flexible shaft and a rope, wherein the flexible shaft couples the electric motor drive element and the disk-shaped element in a kinematically coupled manner and the rope couples the disk-shaped element and the energy storage tank cover plate in a kinematically coupled manner. The flexible shaft is a bendable shaft made of, for example, spring steel wire, wherein the flexible shaft can only be moved in the rotational direction of the electric motor drive element, wherein the flexible shaft is arranged to be supported in a tube and guided.

[0020] In a further alternative embodiment, the application provides that the traction means comprise a rope and a traction element, wherein the rope couples the disk-shaped element to the energy storage tank cover plate in a kinematically coupled manner and the traction element couples the electric motor drive element and the disk-shaped element in a kinematically coupled manner.

[0021] As an alternative to the traction element, the application provides in an embodiment that the traction element is formed as a toothed belt and the disk-shaped element comprises a toothed belt pulley. An important advantage of this design is the low wear of the traction element and the associated long service life.

[0022] On the other hand, the application provides that the traction element is designed as a toothed chain and the disk-shaped element has a drive pinion for the toothed chain. With this design, it is possible to transmit large forces, so that no pretensioning of the traction element is necessary.

[0023] In addition, the application provides that the traction element is designed as a flat belt or a V-belt and the disk-shaped element has a belt pulley. In this case, the power is transmitted elastically by a low-noise, shock- and vibration-damping mode of operation, the maintenance requirement is very low, since no lubrication is necessary.

[0024] In addition, the application provides that the traction element is designed as a flat belt or a V-belt and the disk-shaped element has a belt pulley. In this case, the power is transmitted elastically by a low-noise, shock- and vibration-damping mode of operation, the maintenance requirement is very low, since no lubrication is necessary.

[0025] In the case that the winter energy tank cover plate is frozen in its closed position on the carrier, the application provides in its implementation that, if the deployment force of the mechanical deployment element is not sufficient to force the energy tank cover plate from the closed position to the initial open position, an eccentric profile is formed on the disc-shaped element which interacts with the energy tank cover plate between the closed position and the initial open position.

[0026] Finally, in one embodiment of the application, if the mechanical deployment element is a torsion spring which has its first spring arm supported on the energy tank cover plate and its second spring arm supported on the carrier, the construction is particularly simple.

[0027] It is understood that the features mentioned above and to be explained below can be used not only in the combinations indicated, but also in other combinations or alone, without leaving the scope of the application. BRIEF DESCRIPTION OF DRAWINGS

[0028] Further details, features and advantages of the subject matter of the present application will become apparent from the following description of example and preferred embodiments of the application in connection with the drawings.

[0029] Figure 1 is a schematic side view of a motor vehicle having an energy tank cover plate system according to the application.

[0030] Figure 2 is a perspective view of an energy tank cover plate system according to the application, the energy tank cover plate being arranged in a closed position.

[0031] Figure 3 is a perspective view of an energy tank cover plate system according to the application, the energy tank cover plate being arranged in an open position.

[0032] Figure 4 is Figure 3 is a perspective rear view of the energy tank cover plate system shown, the energy tank cover plate being in an open position.

[0033] Figure 5 shows an exemplary perspective view of an energy tank cover plate mounted on a carrier, and a movement mechanism of an energy tank cover plate system according to the application.

[0034] Figure 6 is a top view of an energy tank cover plate system having a traction device connecting an electric drive element and an energy tank cover plate, according to which the energy tank cover plate is arranged in its closed position.

[0035] Figure 7 is a top view of an energy tank cover plate system having a traction device connecting an electric drive element and an energy tank cover plate, according to which the energy tank cover plate is arranged in its closed position.

[0036] Figure 8 is a side view of a disc-shaped element of a movement mechanism of an energy tank flap system according to the invention.

[0037] Figure 9 is a design of a tow of an energy tank flap system according to the invention.

[0038] Figure 10 shows another embodiment of a tow of an energy tank flap system according to the invention.

[0039] Figure 11 is a perspective view of a disc-shaped element of an energy tank flap system according to the invention.

[0040] Figure 12 is Figure 11 a top view of the disc-shaped element shown in DETAILED DESCRIPTION

[0041] Figure 1 shows an example of a motor vehicle 1 in the form of a passenger car, which motor vehicle has an energy tank flap system 2 with an energy tank flap 3. The energy tank flap 3 closes a recess, which is not shown in more detail in the drawing, in which a fuel filler neck or a charging socket for a charging plug is arranged, which is connected to the energy tank and closed by the flap. The energy tank flap system 2 according to the invention further comprises a holder 4, which can be connected to a body part of the motor vehicle 1. The energy tank flap 3 is rotatably mounted on the holder 4, for example in the manner shown in Figure 2 and Figure 3 , so that the energy tank flap 3 is designed to be movable between a closed position, as shown in Figure 2 , and an open position, as shown in Figure 3 and Figure 4 , in which open position a user can access the recess through a through opening 5 formed in the holder 4. Thus, in its closed position, the energy tank flap 3 closes the through opening 5 formed in the holder 4, whereas in its open position the energy tank flap 3 is raised from the through opening 5 and opens a passage through the through opening 5.

[0042] Furthermore, the energy tank flap system 2 according to the invention has a movement mechanism 6, which is designed to move the energy tank flap 3 from the closed position to the open position and back to the closed position. The movement mechanism 6 comprises an electric drive element 7, as shown in Figure 5 . Furthermore, the movement mechanism 6 comprises a mechanical deployment element 8, as can be seen in Figure 2 and 3 . The energy tank flap 3 is rotatably mounted on the holder 4 by means of a pivot 9 (see, for example, Figure 5 , 6and 7, the pivot 7 itself being mounted on the support 4. The mechanical deployment element 8 is designed as a torsion spring 10 which is wound around the pivot 9. The torsion spring 10 has a first spring arm 11 which is supported on the energy storage tank cover plate 3 and a second spring arm 12 which is supported on the support 4. In the normal operation of the energy storage tank cover plate system 2, the mechanical deployment element 8 exerts a deployment force 14 on the energy storage tank cover plate 3. The deployment force 14 exerted by the mechanical deployment element 8 on the energy storage tank cover plate 3 acts towards the open position, as is shown in Figure 6 , the energy storage tank cover plate 3 being arranged in its closed position. If the energy storage tank cover plate 3 is to be held in its closed position, the electric drive element 7 counteracts the deployment force 14 and holds the energy storage tank cover plate 3 in the closed position. For the normal operation of opening the energy storage tank cover plate 3, i.e. for the movement of the energy storage tank cover plate 3 from the closed position to the open position, the electric drive element 7 exerts a guiding force 15 which counteracts the deployment force 14, as is shown in Figure 6 , which is also exemplary. When the energy storage tank cover plate 3 is moved from the closed position to the open position, the guiding force 15 of the electric drive element 7 is designed to be smaller than the deployment force 14 of the mechanical deployment element 8, so that the energy storage tank cover plate 3 does not swing suddenly to the open position at high speed. Rather, with the aid of the electric drive element 7, by means of which the opening force 14 of the mechanical deployment element 8 is counteracted and reduced, the energy storage tank cover plate 3 is guided at the desired speed into the open position. Thus, when the energy storage tank cover plate is moved from the closed position to the open position, the electric drive element 7 is designed to exert a guiding force 15 which counteracts the deployment force 14. On the other hand, when the energy storage tank cover plate 3 is moved from the open position to the closed position, the electric drive element 7 exerts a return force 16 which is greater than the deployment force 14 of the mechanical deployment element 8, which is also required in order to move the energy storage tank cover plate 3 from the open position back to the closed position. Thus, when the energy storage tank cover plate 3 is moved from the open position to the closed position, the electric drive element 7 is designed to exert a return force 16 on the energy storage tank cover plate 3 which overcomes the deployment force 14, as is shown in Figure 7 . Whether the movement of the energy storage tank cover plate 3 is an opening movement or a closing movement, the guiding force 15 or the return force 16 which is exerted by the electric drive element 7 is a force which counteracts the deployment force 14 of the mechanical deployment element 8 or, in the case of the return force 16, even overcomes the deployment force 14. According to the invention, in order to increase the flexibility of the installation position of the electric drive element 7, it is provided that the electric drive element 7 is arranged at a predetermined distance 17 from the support 4 and / or from the energy storage tank cover plate 3, as is shown in Figure 5 , 6as shown in the examples in Figs. 7 and 8. In order to bridge the predetermined distance, it is further provided according to the application that the electric drive element 7 is in motion connection with the energy storage tank cover plate 3 via a traction device 18, wherein the traction device 18 transmits a guide force 15 or a return force 16 of the electric drive element 7 to the energy storage tank cover plate 3, which will be discussed in detail below.

[0043] From Figure 6 and Figure 7 it can be seen that the traction device 18 is connected to the energy storage tank cover plate 3 via a transmission element 19. For example, the transmission element 19 can be designed as a pulley, in the embodiment shown in the figures the transmission element is designed as a rotatably mounted disc element 20. Furthermore, in these embodiments the disc element 20 is rotatably mounted on the support 4, although other mounting positions of the disc element 20 are conceivable. The disc element 20 serves to guide the traction device 18.

[0044] According to one embodiment, the traction device 18 is designed as a rope 21 having a first end 22 and a second end 23, as is shown exemplarily in Figs. Figure 8 and 9 In this case, the first end 22 of the rope 21 is connected to the electric drive element 7, while the second end 23 of the rope 21 is connected to the energy storage tank cover plate 3. Furthermore, the rope 21 is fixed between its first end 22 and its second end 23 at a fixing point 24 on the disc element 20, as can be seen from the overview in Fig. Figures 6 to 9 In this case, the part of the rope 21 between the first end 22 and the fixing point 24 is guided around a shaft pin 25, see for example Fig. Figure 8 , which is formed on the disc element 20 and extends from the center of the disc element 2 in the axial direction of the disc element 20. As can be seen from Fig. Figure 8 the shaft pin 25 has a shaft diameter 26, while the disc element 20 has a disc diameter 27. The shaft diameter 26 is smaller than the disc diameter 27, whereby a force transmission ratio is created, so that, for example, when the energy storage tank cover plate 3 is moved into the closed position, the energy storage tank cover plate 3 can be pulled with great force towards the seal.

[0045] According to another embodiment not shown in the figure, the traction device 18 can also be envisioned to include a first rope and a second rope, wherein the first rope kinematically couples the electric drive element 7 to the disc element 20, and the second rope kinematically couples the disc element 20 to the energy storage tank cover 3. The first rope can be reversibly engaged with a pin 25 having a shaft diameter 26, while the second rope is wound and unwound around the disc diameter 27 of the disc element 20. With this alternative design, there is no need to guide the integral rope 21 from the small shaft diameter 26 to the large shaft diameter 27, making this design more maintenance-free and less prone to failure. In both the single rope 21 and the first and second rope configurations, the disc element 20 has a winding profile 28 for winding and unwinding at least a portion of the traction device 18 (e.g., see...). Figure 12 In one embodiment of the disc-shaped element having a winding profile 28, the traction device 18 (i.e., rope 21 or the first and / or second rope) is wound around the disc-shaped element 20, for which the disc-shaped element 20 has a winding profile 28, such as... Figure 12 As shown by the dashed line, the winding outline 28 of the disc-shaped element 20 formed by the traction device 18 (i.e., rope 21 or the first and / or second rope) is not visible from the outside. Figure 12 As shown, the winding profile 28 forms at least two different radii 29, 30, or eccentricities. The traction device 18 is designed as a rope; it unfolds at the small radius 29 when the energy storage cover 3 needs to be moved with significant force, for example, when the outer edge of the energy storage cover 3 is pulled towards the seal, such as when the energy storage cover 3 is moved back to the closed position. On the other hand, when less force is required and the energy storage cover 3 is pressed into the open position solely by the unfolding force of the mechanical unfolding element 8, the traction device 18 unfolds at the large radius 30. The disc-shaped element 20 can rotate about a rotation axis 31, which is mounted on the bracket 4, and is thus arranged at a certain distance from the pivot 9.

[0046] Such a winding profile 28 on the disc element 20 can be used in such embodiments described above and still referred to below, wherein a rope element is connected at a first end to the disc element 20 and at a second end to the energy storage tank cover 3, thereby connecting the disc element 20 to the energy storage tank cover 3.

[0047] Figure 10A further embodiment is shown in which the winding contour 28 can be formed on the disk-shaped element 20. In this embodiment, the traction device 18 has a rope loop 32 and a rope 33. In this case, the rope loop 32 is wound around the shaft pin 25 extending from the center of the disk-shaped element 20 and is wound around the drive pin of the motor drive element 7 in the axial direction of the disk-shaped element 20. In addition, the rope 33 connects the disk-shaped element 20 in a kinematically coupled manner to the energy store cover plate 3, as already described above for another embodiment.

[0048] Alternatively to the rope loop 32, it is also conceivable in a further embodiment that the traction device 18 comprises a flexible shaft and a rope, wherein the flexible shaft connects the motor drive element 7 and the disk-shaped element 20 in a kinematically coupled manner and the rope connects the disk-shaped element 20 to the energy store cover plate 3 in a kinematically coupled manner. Thus, a flexible shaft can also be used instead of the rope loop 32 to influence the rotational movement of the disk-shaped element 20.

[0049] In addition, an embodiment is also conceivable instead of the rope loop 32 or the flexible shaft, wherein the traction device 18 has a rope and a traction element, according to which the rope in turn connects the disk-shaped element 20 to the energy store cover plate 3 in a kinematically coupled manner. In addition, the traction element establishes a kinematically coupled connection between the motor drive element 7 and the disk-shaped element 20. The design of the traction element can have various possibilities. For example, the traction element can be designed as a toothed belt, in which case the disk-shaped element 20 has a toothed belt pulley. In addition, it is conceivable that the traction element is designed as a toothed chain, in which case the disk-shaped element 20 has a drive pinion for the toothed chain. Finally, it is also conceivable that the traction element is designed as a flat belt or a V-belt, in which case the disk-shaped element 20 has a belt pulley.

[0050] When the energy storage tank cover plate 3 is frozen to the bracket 4 or to the seal, in order to make the energy storage tank cover plate system 2 operational, in another embodiment of the invention, the possibility is provided to move the energy storage tank cover plate 3 out of this blocked state. For this purpose, the electric drive element 7 is designed to push the energy storage tank cover plate 3, in the blocked state, with an auxiliary force from the closed position to an initial open position, which lies between the closed position and the open position, in which state the deployment force 14 of the mechanical deployment element 8 is not sufficient to move the energy storage tank cover plate 3 from the closed position. In this case, the auxiliary force of the electric drive element 7 is greater than the deployment force 14 of the mechanical deployment element 8. In order to enable the electric drive element 7 to push the energy storage tank cover plate 3 out of the closed position, an eccentric profile 35 is formed on the shaft pin 25 of the disc-shaped element 20. This eccentric profile 35 interacts with the energy storage tank cover plate 3 in relation to the range from the closed position to the initial open position and only in the case that the deployment force 14 of the mechanical deployment element 8 does not force the energy storage tank cover plate 3 beyond the initial open position from the closed position, in the blocked state, the energy storage tank cover plate 3 is frozen to the bracket 4 or to the seal. The energy storage tank cover plate 3 has a U-shaped rotary arm 37, the free end of which is inserted above the pivot 9, so as to be rotatably mounted. In the blocked state, if the deployment force 14 of the mechanical deployment element 8 does not push the energy storage tank cover plate 3 from the closed position to the initial open position, the electric motor drive 7 pushes the eccentric profile 35 onto the rotary arm 37, whereby the eccentric profile 35 interacts with the energy storage tank cover plate 3. The initial open position is a position from the closed position to the open position, in which position the energy storage tank cover plate 3 is arranged to be pivoted in relation to the closed position in the direction of the open position about the pivot 9. The angle of the pivot can be between 2° and 10°. For example, from the closed position to the initial open position, the energy storage tank cover plate 3 is arranged to be pivoted by 5°. The eccentric profile 35 is designed to be in contact with the rotary arm 37 of the energy storage tank cover plate 3 when the disc-shaped element 20 rotates and to push the rotary arm 37, so as to push the energy storage tank cover plate 3 to the initial open position. The function of the eccentric profile 35 is only to push the energy storage tank cover plate 3 in the blocked state to the initial open position with the aid of the auxiliary force. The eccentric profile 35 is designed to function in relation to the direction of rotation of the disc-shaped element 20. The enlarged radius 36 of the eccentric profile 35 is designed to function in relation to the direction of rotation of the disc-shaped element 20. The enlarged radius 36 of the eccentric profile 35 is formed in relation to the direction of rotation of the disc-shaped element 20. For example, in the case that the disc-shaped element 20 rotates in the direction of the arrow 21, the enlarged radius 36 of the eccentric profile 35 is formed in the direction of the arrow 22. Figure 11 and 12 It can be seen that the eccentric profile 35 forms an enlarged radius 36, which, when the disc-shaped element 20 rotates, comes into contact with and pushes against the rotary arm 37 of the energy storage tank cover plate 3, so as to push the energy storage tank cover plate 3 to the initial open position. The function of the eccentric profile 35 is only to push the energy storage tank cover plate 3 in the blocked state to the initial open position with the aid of the auxiliary force. The enlarged radius 36 of the eccentric profile 35 is designed to function in relation to the direction of rotation of the disc-shaped element 20. The enlarged radius 36 of the eccentric profile 35 is formed in relation to the direction of rotation of the disc-shaped element 20. For example, in the case that the disc-shaped element 20 rotates in the direction of the arrow 21, the enlarged radius 36 of the eccentric profile 35 is formed in the direction of the arrow 22. Figure 10In the embodiment shown, the disc-shaped element 20 can have two rotational directions, so that, in order to overcome the blocked state, the disc-shaped element 20 is rotated in the opposite direction to the actual rotational direction for opening the energy tank flap 3, as a result of which the eccentric profile 35 forces the energy tank flap 3 in a first step from the closed position into the initial open position. After reaching the initial open position, the disc-shaped element 20 is rotated in the actual rotational direction in order to open the energy tank flap 3, whereby the rotational direction of the disc-shaped element 20 is controlled by the electric drive element 7 via the cord loop 32. In the embodiment shown, the electric drive element 7 can only perform a pulling movement in order to overcome the blocked state, so that the energy tank flap 3 is moved against the opening direction in order to overcome the blocked state, and the disc-shaped element 20 is rotated against the rotational direction for opening, whereby the energy tank flap 3 can be moved out of the blocked position. In this case, it is not absolutely necessary to have an eccentric profile 35, but the eccentric profile 35 can facilitate the breaking of the energy tank flap 3. Figure 9 In the embodiment shown, the electric drive element 7 can only perform a pulling movement in order to overcome the blocked state, so that the energy tank flap 3 is moved against the opening direction in order to overcome the blocked state, and the disc-shaped element 20 is rotated against the rotational direction for opening, whereby the energy tank flap 3 can be moved out of the blocked position. In this case, it is not absolutely necessary to have an eccentric profile 35, but the eccentric profile 35 can facilitate the breaking of the energy tank flap 3.

[0051] In summary, the energy tank flap system 2 of the motor vehicle 1 according to the application comprises a support 4, an energy tank flap 3 which is rotatably mounted on the support 4 and is designed to be movable between a closed position and an open position, and a movement mechanism 6 which is designed to move the energy tank flap 3 from the closed position into the open position and back into the closed position. The movement mechanism 6 itself has an electric drive element 7 and a mechanical deployment element 8, wherein the mechanical deployment element 8 is designed to exert a deployment force 14 which acts on the energy tank flap 3 in the open position. The electric drive element 7 is further configured to exert a guide force 15 which counteracts the deployment force 14 when the energy tank flap 3 is moved from the closed position into the open position, wherein a return force 16 of the electric drive element 7 acts on the energy tank flap 3 when the energy tank flap 3 is moved from the open position into the closed position, which return force 16 overcomes the opening force 14. The electric drive element 7 is arranged at a predetermined distance 17 from the support 4 and / or the energy tank flap 3 and is connected to the energy tank 3 by means of a traction device 18 in order to be moved.

[0052] Of course, the application described above is not limited to the embodiments described and illustrated. It is obvious that, depending on the intended application, many modifications to the embodiments shown in the figures can be made which will be apparent to the skilled person without thereby departing from the scope of the application as defined in the claims.

Claims

1. A storage tank cover system (2) for a motor vehicle (1), comprising a bracket (4), a storage tank cover (3) rotatably mounted on the bracket (4) and designed to move between a closed position and an open position, and a motion mechanism (6) designed to move the storage tank cover (3) from the closed position to the open position and back to the closed position, wherein, The motion mechanism (6) has a motor drive element (7) and a mechanical deployment element (8), wherein the mechanical deployment element (8) is designed to apply a deployment force (14) to the energy storage tank cover (3) toward the open position, wherein the motor drive element (7) is designed to apply a guiding force (15) to the energy storage tank cover (3) to counteract the deployment force (14) when the energy storage tank cover (3) moves from the closed position to the open position, and is designed to apply a return force (16) to overcome the deployment force (14) when the energy storage tank cover (3) moves from the open position to the closed position, wherein the motor drive element (7) is arranged at a predetermined distance (17) from the support (4) and / or from the energy storage tank cover (3), and is kinetically connected to the energy storage tank cover (3) via a traction device (18). The traction device (18) is connected to the energy storage tank cover (3) via a transmission element (19), wherein the transmission element (19) is designed to be a rotatably mounted disc element (20), the disc element (20) is rotatably mounted on the bracket (4), and the energy storage tank cover (3) is rotatably mounted on the bracket (4) via a pivot (9), the disc element (20) can rotate around a rotation axis (31), which is mounted on the bracket (4), and the rotation axis (31) is arranged at a certain distance from the pivot (9).

2. The energy storage tank cover system (2) according to claim 1, wherein the traction device (18) is formed as a rope (21) having a first end (22) and a second end (23), wherein, The first end (22) of the rope (21) is connected to the motor drive element (7), the second end (23) of the rope (21) is connected to the energy storage box cover (3), and the rope (21) is fixed at the fixing point (24) on the disc element (20) between its first end (22) and second end (23).

3. The energy storage tank cover system (2) according to claim 2, wherein, The disc element (20) has a journal (25) extending from the center of the disc element (20) and axially along the disc element (20), wherein a rope (21) extending between the first end (22) and the fixing point (24) is partially wrapped around the disc element (20).

4. The energy storage tank cover system (2) according to claim 3, wherein the journal (25) has a shaft diameter (26), the disc element (20) has a disc diameter (27), and wherein the shaft diameter (26) is smaller than the disc diameter (27).

5. The energy storage tank cover system (2) according to claim 1, wherein the traction device (18) includes a first rope and a second rope, wherein the first rope connects the motor drive element (7) to the disc element (20) in a motion-coupled manner, and the second rope connects the disc element (20) to the energy storage tank cover (3) in a motion-coupled manner.

6. The energy storage tank cover system (2) according to any one of claims 2 to 5, wherein the disc-shaped element (20) has a winding profile (28) for winding or releasing at least a portion of the traction device (18).

7. The energy storage box cover system (2) according to claim 6, wherein the winding profile (28) has at least two different radii (29, 30) that transition into each other in succession or are set to be eccentric.

8. The energy storage tank cover system (2) according to claim 1, wherein the traction device (18) comprises a rope loop (32) and a rope (33), wherein, The rope loop (32) is wound around the journal (25) extending axially from the center of the disc element (20) and the disc element (20), and around the drive pin (34) of the motor drive element (7), wherein the rope (33) connects the disc element (20) to the energy storage box cover (3) in a motion-coupled manner.

9. The energy storage tank cover system (2) according to claim 1, wherein the traction device (18) includes a flexible shaft and a rope, wherein the flexible shaft is kinematically coupled to the motor drive element (7) and the disc element (20), and the rope is kinematically coupled to the disc element (20) and the energy storage tank cover (3).

10. The energy storage tank cover system (2) according to claim 1, wherein the traction device (18) includes a rope and a traction object, wherein the rope connects the disc element (20) to the energy storage tank cover (3) in a motion-coupled manner, and the traction object connects the motor drive element (7) and the disc element (20) in a motion-coupled manner.

11. The energy storage box cover system (2) according to claim 10, wherein the traction element is designed as a toothed belt and the disc element (20) has a toothed belt disc.

12. The energy storage tank cover system (2) according to claim 10, characterized in that, The traction element is designed as a toothed chain, and the disc element (20) has a small drive gear for the toothed chain.

13. The energy storage box cover system (2) according to claim 10, wherein the traction element is formed as a flat belt or a V-belt, and the disc element (20) includes a belt reel.

14. The energy storage tank cover system (2) according to claim 1, wherein an eccentric profile (35) is formed on the disc-shaped element (20), the eccentric profile (35) interacting with the energy storage tank cover (3) between a closed position and an initial open position, the initial open position being between a closed position and an open position, when the deployment force (14) of the mechanical deployment element (8) cannot force the energy storage tank cover (3) from the closed position to the initial open position.

15. The energy storage tank cover system (2) according to claim 1, wherein the mechanical deployment element (8) is a torsion spring (10) about a pivot (9) of the energy storage tank cover (3), the first spring arm (11) of which is supported on the energy storage tank cover and the second spring arm (12) of which is supported on a bracket (4).

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