PARTIAL-OPENING DEVICE FOR A MOTOR-VEHICLE DOOR ELEMENT

Abstract

A partial-opening device for a motor-vehicle door element, having an electric drive, an actuating element, more particularly a pushing element which acts the door element, wherein the actuating element can be moved by means of the electric drive and by means of a gearing arranged between the electric drive and the actuating element, such that the door element can be at least partially opened by means of the actuating element, and wherein the gearing has a drive lever, which is disposed on an outer end of the actuating element, which outer end is associated with the door element.

Claims

1. A partial-opening device for a motor-vehicle door element, the partial-opening device comprising: an electric drive, an actuating element, comprising a pushing element which acts on the door element, and a gearing arranged between the electric drive and the actuating element, wherein the actuating element is moved by the electric drive and by the gearing such that the door element is at least partially opened by the actuating element, and wherein the gearing has a drive lever, and the drive lever is arranged on an outer end of the actuating element that is adjacent to the door element.

2. The partial-opening device according to claim 1, wherein the drive lever is pivotably fastened to the actuating element.

3. The partial-opening device according to claim 1, wherein the actuating element has at least one guiding region and one partially opening region.

4. The partial-opening device according to claim 3, wherein the drive lever is fastened to the actuating element in the partially opening region of the actuating element.

5. The partial-opening device according to claim 3, wherein at least the partially opening region is formed at least partially from a metallic material.

6. The partial-opening device according to claim 1, wherein the actuating element is formed at least partially from plastic.

7. The partial-opening device according to claim 1, further comprising an adjusting lever, wherein the drive lever is actuated by the adjusting lever.

8. The partial-opening device according to claim 1, wherein when the door element is in an open position, a bearing point of the drive lever protrudes at least partially from an opening of a seat for the partial-opening device.

9. (canceled)

10. The partial-opening device according to claim 1, wherein the actuating element is constructed in at least two parts.

11. The partial-opening device according to claim 1, wherein when the door element is in an open position, a bearing point of the drive lever protrudes completely from an opening of a seat for the partial-opening device.

12. The partial-opening device according to claim 1, wherein the gearing further includes an actuating lever that drives the drive lever.

13. The partial-opening device according to claim 12, wherein in a closed position of the door element the actuating lever engages with the drive lever at a first engagement region, in a partially-open position of the door element the actuating lever engages with the drive lever at both the first engagement region and at a second engagement region, and in an open position of the door element the actuating lever engages with the drive lever at the second engagement region.

14. The partial-opening device according to claim 12, wherein a ratio of a first radius of rotation of the actuating lever to a second radius of rotation of the drive lever is 1:2.

15. The partial-opening device according to claim 1, wherein the electric drive engages with the gearing via a Bowden cable.

16. The partial-opening device according to claim 3, wherein the guiding region comprises two thirds of the actuating element and the partially opening region comprises one third of the actuating element.

17. A motor-vehicle door element comprising: the partial-opening device according to claim 1, an electrically unlockable lock, and a control unit that operates the partial-opening device to open the electrically unlockable lock.

18. The motor-vehicle door element according to claim 17, wherein the door element includes a seat for the partial-opening device, and when the door element is in an open position, a bearing point of the drive lever protrudes completely from the opening of a seat for the partial-opening device.

Description

[0025] In the drawings:

[0026] FIG. 1 shows a schematic illustration of an embodiment in a side view, wherein only the components essential for explaining the invention are shown, and wherein the initial position of the partial-opening device is shown,

[0027] FIG. 2 shows the partial-opening device in a position in which the first effective radius has enabled ice breaking, and a partially opened door element is shown,

[0028] FIG. 3 shows the partial-opening device in a position in which the door element has been moved to its open position, and the second effective radius acts on the actuating element and holds the door element in the open position, and

[0029] FIG. 4 shows an enlarged view of the schematic illustration of the partial-opening device according to FIG. 3 in an open position of the door element.

[0030] FIG. 1 shows a schematic illustration of a partial-opening device 1 installed in a car body 2 of a motor vehicle in a side view of the gearing 3 and the actuating element 4. The partial-opening device 1 is shown in its initial position, wherein the actuating element 4 is flush with an opening 5 in the car body 2. A motor-vehicle door element 6 is in a closed position in which the door element 6 is, for example, held in the main latching position by an electrically actuated closing system. The partial-opening device 1 also has an electric drive 7, which, for example, engages with the gearing 3 via a Bowden cable 8. In turn, the gearing 3 in this exemplary embodiment is formed by two levers 9, 10, wherein a first lever 10 is pivotally accommodated in the actuating element 4, and a second lever 9 is pivotally accommodated in the partial-opening device 1. In the partial-opening device 1, the first lever 10 is pivotably fastened about a pivot axis 11, and the second lever 9 is pivotably fastened the pivot axis 12.

[0031] Two engagement regions 13, 14 are formed between the first and second levers 9, 10, each with a corresponding effective radius R1, R2 in the gearing 3.

[0032] FIG. 1 shows the initial position A of the door element 6 in which the door element 6 is in the closed position. The actuating element 4 is held, for example, spring-loaded in the initial position, i.e. flush with the opening 5 in the partial-opening device 1. If a control signal is now transmitted to the control unit 15 by the operator, a control signal is first sent to an electric lock 16, wherein the electric lock is unlocked. The control unit 15 then initiates the partial-opening process. For this purpose, the control unit 15 actuates the electric drive, whereby the second lever 9 is moved in the direction of the arrow P, for example, with the aid of the Bowden cable 8. As shown in FIG. 1, the second lever 9 rests against the first lever 10 in the engagement region 13 and rolls in the engagement region 13 with the effective radius R1.

[0033] The transmission ratio means that a large force is exerted on the actuating element 4 such that the actuating element 4 can also break up ice, i.e. an iced door seal. If the door element 6 has been partially opened enough for a release from the door seal to have been definitely achieved, the door element 6 is then in the ice-breaking position shown in FIG. 2. The door element 6 is already open across a gap S1. When the ice-breaking position E is reached, the second effective radius R2 then engages the first lever 10 in the engagement region 14, wherein a larger effective radius R2 comes into engagement with the first lever 10. The transmission ratio changes in such a way that partial opening can take place at an increased speed.

[0034] After a further actuation of the second lever 9, the open position O of the door element 6 shown in FIG. 3 is reached. As can be clearly seen in FIG. 3, the larger effective radius R2 now acts on the first lever 10, allowing the door element 6 to be partially opened quickly. given the spacing L of the engagement regions 13, 14, a discontinuous transmission ratio can be realized in the partial-opening device. A continuous partial opening with different functionalities can therefore be realized with the simplest design means. The spacing L of the engagement regions 13, 14 can be selected in such a way that, depending on the available or required force input, an optimized force curve can be realized in the partial-opening device 1. It has proven advantageous in this regard if the ratio of the effective radii to one another is R1:R2=1:2. After the door element has been partially opened, the partial-opening device 1 can move the actuating element 4 back to the initial position, for example, by means of a spring element. However, it is also conceivable that the actuating element 4 is moved back to the initial position when the door element 6 is closed by means of the door element 6 itself.

[0035] FIG. 4 shows the open position according to FIG. 3. FIG. 4 also shows the division of the actuating element 4 into an partially opening region 17 and a guiding region 18. In this case, the dotted line L shows the approximate division of the actuating element 4 into one-third of a partially opening region 17 and two-thirds of a guiding region 18.

[0036] FIG. 4 shows various embodiments of actuating elements 4 as hybrid components. Preferably, a metal core 19 is arranged in the region of the pivot axis 11, which extends at least into the region of the pivot axis 11. Depending on the embodiment and the requirements for the stability of the actuating element 4, there can also be an extension 20 of the metal core 19 into the guiding region 18.

[0037] In addition, it is also conceivable that, in order to increase stability, the metal core 19 extends far into the guiding region 18, which is indicated by the dashed line 21 as an example. Furthermore, it is also conceivable that several metal cores 19, 22 are arranged in the actuating element 4 in order to therefore serve to further stabilize the actuating element. In addition to the metal core 19, 22, the actuating element can have a plastic region 23 that connects and/or stabilizes the metal cores 19, 22.

[0038] The illustrated embodiments of the metal core 19, 22, the extension 20, the dashed line 21 and the plastic region 23 are only examples, and the division can be adapted to the requirements of the actuating element 4. In particular, depending on the open position, speed and gap dimension, different requirements can be placed on the actuating element 4, such that a structurally adapted embodiment is necessary. In particular, a guide rib 24, for example, can be arranged in the guiding region 18 and is, for example, formed from a plastic coating 23 of the metal core 19, 22. It is also possible to form a multi-part design of the actuating element, for example in the region of the dashed line L, such that the partially opening region 17 is structurally very strong, and the guiding region 18 is light and can be formed merely as a guide element. A lightweight partial-opening device 1 can therefore be provided that masters all the loads and functionalities of the partial-opening device 1.

LIST OF REFERENCE SIGNS

[0039] 1 Partial-opening device [0040] 2 Car body [0041] 3 Gearing [0042] 4 Actuating element [0043] 5 Opening [0044] 6 Motor-vehicle door element [0045] 7 Electric drive [0046] 8 Bowden cable [0047] 9, 10 Lever [0048] 11, 12 Pivot axis [0049] 13, 14 Engagement region [0050] 15 Control unit [0051] 16 Electric lock [0052] 17 Partially opening region [0053] 18 Guiding region [0054] 19, 22 Metal core [0055] 20 Extension [0056] 21 Dashed line [0057] 23 Plastic region [0058] 24 Guide rib [0059] R, R1 Effective radius [0060] A Initial position [0061] E Ice-breaking position [0062] O Open position [0063] P Arrow [0064] S1, S Gap [0065] L Dot-dashed line