EP1614840A2 - Assisted final closing device for an open wing or door of a vehicle - Google Patents

Abstract

The device has a lock that releases a lock part in the open position and traps it in the closed position, a motor-driven closure aid and at least one sensor that switches the motor on and/or off in a defined position of the flap (10) or door. The aid is independent of the lock and is a device of two parts (12,50), one mounted on the door or flap and the other on the body (11) of the vehicle.

Description

The invention is directed to a device specified in the preamble of claim 1 Art.

This device initially comprises a lock which is fastened to the flap or door or to the body. The lock is reversible between its open position in at least one closed position. In the open position, the lock releases a closing part which is seated on the body or on the flap or door, as a result of which the flap or door can be opened. When closing the flap or door, the lock cooperates with the closing part and is supported by a closing aid, which can be driven by a motor. In the closed position, the lock detects the closing part and thereby holds the flap or door in the closed position. At least one sensor is provided, which during the closing process responds to a specific first position of the flap or the door or the lock and then sets the motor effectively. In a second position of the flap or door, the engine is switched off again.

The motor of the closing aid can cause a movement of the closing part in the closing sense, when the associated component has already detected the closing part in the lock and initially holds in a so-called pre-catch, (DE 199 55 883 A1). The aforementioned movement of the closing part then transfers the lock component into its main latching position.

However, there are also devices where the closing aid acts on the components of the lock, e.g. on a rotary latch, which detects the closing part and initially also holds in a pre-catch. By means of the closing aid, the catch is further rotated from its pre-rest position into a main branch. Then the closed position of the lock is present.

The known locks need for the closing aid a large space in the lock housing or in the region of its closing part of the castle. The lock housing leaves only little space for the closing aid.

The invention has for its object to develop a reliable device with Zuziehhilfe, which is designed spatially and functionally cheaper. This is inventively achieved by the measures specified in claim 1, which have the following special significance.

In the invention, a two-part Zuzieheinrichtung is used independently of the lock, one part of which are arranged on the body and the other part of the flap or door of the vehicle. The one, active part of Zuzieheinrichtung consists of a motor-driven pair of levers, one lever has a hook. The other passive part of the closing device is a stationary bridge. The pair of levers ensures that the hook is adjusted by the motor with respect to the web both between an engagement position and a release position and between a low position and a high position. This ensures a precise pulling the flap or door to the body.

Fig. 1

die Ansicht auf eine erfindungsgemäße, an einer Heckklappe eines Fahrzeugs befestigte Zuzieheinrichtung, die mit einem an der Karosserie sitzenden ortsfesten Steg zusammenwirkt,

Fig. 2 bis 4

nur die wesentlichsten Bauteile der Zuzieheinrichtung von Fig. 1 in drei aufeinanderfolgenden Phasen der Zuziehbewegung der Heckklappe an die Karosserie des Fahrzeugs,

Fig. 5 + 6

zwei weitere Phasen der bereits in den Fig. 2 bis 4 gezeigten Bauteile nach Abschluss des Zuziehvorgangs, wenn sich das nicht näher gezeigte Schloss in seiner endgültigen Schließposition befindet und die erfindungsgemäße Zuzieheinrichtung nicht mehr benötigt wird,

Fig. 7,

in einer der Darstellung von Fig. 3 entsprechenden Phase, ein zweites Ausführungsbeispiel der erfindungsgemäßen Zuziehhilfe, wenn diese gleichzeitig mit einem Einklemmschutz versehen ist, und

Fig. 8

die Zuzieheinrichtung von Fig. 7 in einer späteren Arbeitsphase, nachdem der Einklemmschutz wirksam geworden ist.

Further measures and advantages of the invention will become apparent from the dependent claims, the following description and the drawings. In the drawings, the invention is illustrated in two embodiments. They show schematically:

Fig. 1

the view of an inventive, attached to a tailgate of a vehicle Zuzieheinrichtung, which cooperates with a seated on the body stationary web,

Fig. 2 to 4

only the most essential components of the closing device of FIG. 1 in three successive phases of the closing movement of the tailgate to the body of the vehicle,

Fig. 5 + 6

two further phases of the components already shown in FIGS. 2 to 4 after completion of the closing operation, when the lock not shown in detail is in its final closed position and the closing device according to the invention is no longer needed,

Fig. 7,

in a phase corresponding to the representation of FIG. 3, a second embodiment of the closing aid according to the invention, if this is provided simultaneously with a pinch protection, and

Fig. 8

the closing device of Fig. 7 in a later working phase, after the anti-jamming has become effective.

The closing device 20 shown in Fig. 1 is used in a tailgate 10 of a vehicle. The flap 10 is to be moved relative to the body 11 of the vehicle, where a Zuzieheinrichtung 20 belonging to the web 12 is stationary. The web 12 is located on a web support 13, which is designed here as a two-legged bracket. The web 12 connects the two legs of the bracket 13. In the drawings, the front leg is broken away, so that the web 12 appears in cross section. The two parts of the closing device could exchange their positions between the flap 10 and the body 11. Instead of a tailgate 10, a door could also be provided with the closing device 20 according to the invention.

The active part of the closing aid 20 according to the invention consists of a pair of levers 50 which are coupled to one another in a special way and which comprises a main lever 22 and a secondary lever 23. While the main lever 22 is pivotally mounted with its one end 44 in a stationary bearing 19, the corresponding pivot bearing 31 is for the secondary lever 23 on the main lever 22. When the main lever 22 is pivoted in the direction of the arrow 42 of Fig. 1, takes the main lever 22, the pivot bearing 31 from the secondary lever 23 with. The pivot bearing 31 is thus movable and occupy different height positions 31.1 and 31.2 relative to the web 12, as will be described in more detail. The main lever 22 has a control arm 36 which is supported on a main cam 28. For this purpose, the main lever 22 is force-loaded by a spring against the main cam 28. The pivotal movement of the main lever 22 via a motor 15th downstream gear 16 and a worm 17 which drives a seated on the drive shaft 30 of the main cam 28 worm wheel 18.

With respect to its pivot bearing 31, the secondary lever 27 is adjustable between different rotational positions. This is caused by a secondary control cam 29. The auxiliary control cam 29 is driven by the motor 15 and its gear 16 to 18 in the direction of the arrow 35. The secondary lever 23 has the following special structure.

The sub-lever 23 is formed with three arms. This first includes a control arm 24, which is supported under the action of a spring load on the secondary control cam 29, while an angled extending actuator arm 25 has a hook 26 end. Finally, the secondary lever 23 also has an additional arm 27, which is provided with an engagement point 34 for the traction means 33 of an emergency operation. The emergency operation 33 is then manually operable when the electrical control fails.

The lever pair 50, the motor 15 and its gear 16 to 18 form the active part of the closing device 20 according to the invention. This active part is installed in a housing 21 which is fastened to the flap 10. The housing 21 has a slot 32, in which the bracket 13 can retract with its web 12, as shown in FIG. 1. The hook 26 from the secondary lever 23 cooperates with the web 12 of the bracket 13. How this is done in detail can be seen from FIGS. 2 to 6, in which five different working phases of the most important components of the closing device 20 according to the invention are shown.

In the open position of the flap 10, the lever pair 50 assumes the position shown in FIG. 2. The motor rests, the two control cams 28, 29 are in an output rotational position, which is marked in Fig. 2 with 0 °. Then the main lever 22 is with its control arm 36 at the minimum 39 of its main control cam 28. The pivot bearing 31 of the auxiliary lever 23 takes in the initial rotational position a marked by the auxiliary line 31.1 in Fig. 2 low position. At the same time, the secondary lever 23 is supported by its control arm 24 at its Highlighted by dot hatching in Fig. 2 maximum 37 of the sub-control curve 29 from. As a result, with regard to the bracket 13, an inclination position of the setting arm 25 that can be seen by the auxiliary line 26.1 occurs.

The apparent in Fig. 2 rest position of the lever pair 50 is present when the tailgate open and remains even when the tailgate 10 is closed so far until the associated, not shown in detail lock has come into a Vorrastlage. This situation is shown in FIG. In all drawings, the elastic seals between the lower edge 45 of the tailgate 10 and the upper edge of the body 11 are not drawn. In the pre-rest position of Fig. 2 is still a gap between the elastic seals before. If the elastic seals are disregarded, a gap 14 exists between the upper edge 11.1 of the body 11 on the one hand and the lower edge 45 of the tailgate 10 on the other hand. 2, the hook 26 is located by the secondary lever 23 in a lateral position below the web 12 of the bracket 13. The above tilt position 26.1 of the actuator arm 25 thus proves to be "release position" of the hook 26 with respect to the fixed web 12th

In the pre-locking position of Fig. 2 sensors are effective, which put the motor 15.1 in operation. What happens then can be seen in FIG. 3, which shows the next working phase of the drive. The cams 28, 29 have further rotated by a small angle of about 5 °. The main lever 22 is still with its control arm 36 in the vicinity of the main control cam minimum 38, which is why the movable pivot bearing 31 from the secondary lever 23 is still very close to its described in Fig. 2 subscript 31.1. However, the control arm 24 from the secondary lever 23 has left the point-hatched maximum 37 of the secondary control cam 29. By the mentioned spring load, therefore, the sub-lever 23 has rotated in its pivot bearing 31 in the direction of the arrow 43 and the hook 26 of its actuating arm 25 has come under the bracket web 12. It is then the characterized by the auxiliary line 26.2 "engagement position" of the hook 26 before.

As a result of the further rotation of the drive, the control cams 28, 29 finally reach a 180 ° position which can be seen from FIG. 4. The main cam 28 is ready has been rotated, that now the control arm 36 of the main lever 22 is supported at the maximum 40 of the associated main control cam 28. As a result, the main lever 22 has come to a higher inclined position relative to the pre-locking position of FIG. 2, whereby the secondary lever 23 has been taken up via its pivot bearing 31 upwards. The sub-lever pivot bearing 31 is now in a marked by the auxiliary line 31.2 superscript. The pivot bearing 31 has moved up the distance 41 upwards. Because the hook 26 has captured and taken along the stirrup bridge 12, the tailgate 10 has been used on the body 11. This relative movement is illustrated in FIG. 4 on the basis of the position of the upper edge 11.2 relative to the tailgate lower edge 45. In the space 59 between the two edges 11.2, 45 are the already mentioned above, not shown in detail elastic seals, which are pressed firmly in Fig. 4 against each other. In Fig. 4, the already mentioned parallel lock between the tailgate 10 and the body 11 is transferred in a closed position.

In the closed position of Fig. 4, the tailgate 10 is already held by the lock on the body 11. It is therefore no longer important whether the hook 26 engages behind the strap web 12. Therefore, the drive can continue running and reaches the working position shown in Fig. 5, where the control cams 28, 29 have reached their 200 ° rotational position. In the intermediate position of Fig. 5 is the control arm 24 from the secondary lever 23 straight at the transition point between the minimum 38 and the dot-dashed hatched maximum 37 of its sub-control curve 29. The hook 26 still engages behind the web 12 from the stationary bracket 13, but has the Control arm 36 from the main lever 22 already leave the maximum 40 of its main cam 28. As a result, the movable pivot bearing 31 was slightly lowered by the sub-lever 23, so that a small clearance between the hoop web 12 and the hook 26 is formed. This game does not bother because, as I said, the parallel lock holds the tailgate 10 relative to the body 11; on the contrary, the game facilitates the further return movement of the hook 26th

Upon further drive of the control cams 28, 29 in the direction of the arrow 35, it then comes to the apparent from Fig. 6 intermediate position of the lever pair 50, the one 240 ° rotational position of the cams 28, 29 shows. Because the control arm 36 has come closer to the minimum 39 of its main cam 28, the pivot bearing 31 has lowered from the secondary lever 23 even more to the web 12 out. At the same time, however, the secondary lever 23 with its control arm 24 for support at the punktschrafften maximum 37 its Nebensteuerkurve 29 passes. Therefore, in Fig. 6 is again a release position 26.1 of its actuator arm 25 before. The hook 26 is located at a lateral distance from the hoop web 12.

The motor only stops when the rest position of the drive shown in FIG. 2 has been reached again, namely the 0 ° position. The device 20 is then in a readiness for a future Zuziehvorgang. In this case, the tailgate 10 is still closed as long as the parallel lock holds it to the body 11. This changes only when the lock releases its closing part, which releases its closing part, which can be done in the usual way by radio, a central locking and / or a mechanical key.

The second embodiment shown in FIGS. 7 and 8 shows the inventive closing device according to the invention, even if it is also provided with a pinch protection. Therefore, the same reference numerals as in the first embodiment of FIGS. 1 to 6 are used to designate similarly designed components. In that regard, the previous description applies. All you have to do is address the differences.

The bearing end 44 of the main lever 22 has an open pivot bearing 49 and is therefore not always stationary. The pivot bearing 49 consists here namely of a stationary bearing pin 46, but from an open, trained as a slot 47 bearing receptacle. The pivot bearing 49 still has a spring 48, which exerts a force acting in the direction of the force arrow 51 spring load on the bearing end 44 of the main lever 22. Only in the normal case, therefore, the pivot bearing 49 is stationary because its bearing pin 46 is located in the lower portion 47.1 of the slot 47. There is also a further sensor 52, which is to be designated for the purpose of distinguishing the other sensor serving for switching on and off of the motor 15 with the "anti-pinch sensor". This anti-pinch sensor 42 monitors the situation of the pivot bearing 49 in this lower normal range 47.1 and consists in the present case of an electrical switch. The switch 52 has a switch actuator 53. The switch actuator 53 responds to a movement of the pivot bearing 49, which occurs in the following Einklemmfall.

Fig. 7 shows the lever pair 50 in a position corresponding to that of Fig. 3 of the first embodiment. The hook 26 from the secondary lever 23 is already in an engaged position 26.2 with respect to the hoop web 12 and the main lever 22 with the pivot bearing 31 for the secondary lever 23 almost in the low position. Because, as in the first embodiment, the drive is turned on, the two control discs 28, 29 rotate in the sense of the drive arrow 35 of Fig. 7. Between the 11.1 position of the upper edge of the body 11 and the lower edge 45 of the tailgate 10 is a Obstacle 55, eg the finger of a human hand. In Fig. 7 begins, as already described in connection with FIG. 3 of the first embodiment, the closing movement of the device 20 '. Unless the announced anti-jamming protection were present, the human finger 55 would be crushed.

However, this is prevented in the second embodiment 20 'of the closing aid according to the invention, as can be seen from FIG. 8. As soon as pulling the tailgate 10 through the obstacle 55, a resistance on the link chain bracket 13, bar 12, hook 26, sub-lever 23, the pivot bearing 31 and the main lever 22 makes noticeable acts on the open pivot bearing 49 by an arrow 54 in Fig. 8 illustrated clamping force. This clamping force 54 moves the bearing end 44 of the main lever 22 against the acting spring load 41. The spring 48 is stretched and the stationary bearing pin 46 reaches into the upper region 47.2 of the slot. The result is that the bearing end 44 of the main lever 22 moves down about the path 56. This is registered by the pinch protection sensor 52. In the present case, the switch actuator 53 is depressed.

The anti-jamming sensor 52 is connected to an electric controller 57 of the motor 15. From the electrical control 57 goes the electrical Supply line 58 to the motor 15. When the anti-jamming sensor 52 responds, the power supply to the motor 15 is interrupted. The rotation of the eccentric 28, 29 stops. There remains a sufficiently large remaining gap 14 'between the tailgate lower edge 45 and the upper edge of the body 11, which prevents damage to the pinched finger 55.

If the obstacle or the finger 55 is removed from the remaining gap 14 ', the pivot bearing 49 is due to the spring load 51 back to its apparent from Fig. 7 normal position. Then the stationary bearing pin 46 comes again to lie in the lower region 47.1 of the slot 47. The anti-pinch sensor 52 releases the electrical power supply of the motor 15 via the electrical control 57 again. The two control cams 28, 29 are further driven until finally the closing position of the tailgate already described in connection with the first embodiment in FIG. 4 is reached. As can be seen, even if the anti-jamming device becomes effective in the closing device 20 ', the later operation will not be disturbed if the obstacle has been removed from the path of movement of the tailgate.

List of reference numbers :

10

Tailgate of the vehicle

11

body

11.1

Position of the top edge of 11 in the pre-locking position (FIG. 2)

11.2

Position of the top edge of 11 in the main latching position / closing position (FIG. 4)

12

Jetty at 11

13

Bridge bearer, strap

14

Gap between 10, 11 (FIG. 1)

14 '

Residual gap between 10, 11 (FIG. 8)

15

engine

16

Gearbox on 15

17

Snail at 16

18

Worm wheel for 17

19

fixed swivel bearing for 22

20

First embodiment of the closing device (FIGS. 1 to 6)

20 '

second embodiment of the closing device (FIGS. 7, 8)

21

Housing of 20

22

Main lever of 20

23

Secondary lever of 20

24

Control arm of 23

25

Stellarm of 23

26

Hook on 25

26.1

Auxiliary line of the release layer of FIG. 26 (FIG. 2)

26.2

Auxiliary line of the engagement position of FIG. 26 (FIG. 3)

27

Additional arm of 23

28

Main cam for 22

29

Auxiliary control curve for 23

30

Drive axle of 18, 28, 29 (Fig. 1)

31

movable pivot bearing from 23 to 22

31.1

Auxiliary line of the subscript of FIG. 31 (FIG. 2)

31.2

Auxiliary line of the high position of 31 (FIG. 4)

32

Slot in 21 for 12

33

Traction device of the emergency operation

34

Attack point from 33 to 27

35

Drive arrow of 18, 28, 29

36

Control arm from 22

37

dot-hatched maximum of 29 (Figure 2)

38

Minimum of 29 (Figure 3)

39

Minimum of 28 (Figure 6)

40

Maximum of 28 (Figure 4)

41

Zuziehstrecke between 11.1, 11.2 (Fig. 4, 5)

42

Pivoting movement of 22

43

Rotational movement of 23 (Fig. 3)

44

End of storage of 22

45

Lower edge of 10

46

fixed bearing pin (Fig. 7)

47

Bearing holder for 46, slot

47.1

lower range of 47 (normal case Fig. 7)

47.2

upper range of 47 (pinching case, Fig. 8)

48

Feather for 44

49

open pivot bearing (Fig. 7, 8)

50

pair of levers

51

Force arrow of the spring loading of 44 (FIGS. 7, 8)

52

Pinch protection sensor (Fig. 7, 8)

53

Switch actuator (Figs. 7, 8)

54

Clamping force of 44 (Figure 8)

55

Obstacle, human finger (Fig. 7, 8)

56

Displacement path of 44 (FIG. 8)

57

electrical control for 15 (Figures 7, 8)

58

electrical supply line for 15 (Fig. 7, 8)

59

Space between 45 and 11.2 (Fig. 4)

Claims (25)

Device for closing (41) an open flap (10) or a door to the body (11) of a vehicle
with a lock which releases a closing part in the open position and detects it in the closed position,
with a motor-driven closing aid
and at least one sensor that turns on and / or off the motor in a specific position of the flap or door,
characterized,
that the closing aid (20) is formed independently of the lock and consists of a two-part closing device (20; 20 '),
one part (12) or (50) of which is arranged on the body (11) and the other part (50) or (12) on the flap (10) or door of the vehicle,
in that the one, active part of the closing device (20; 20 ') consists of a motor-movable lever pair (50) whose one lever (27) has a hook (26),
while a stationary web (12) forms the other, passive part of the closing device (20; 20 ')
and that the hook (26) from the motor (15) opposite the web (12) both between an engaged position (26.2) and a releasing location (26.1) and is adjustable between a low position (31.1) and a high position (31.2). Device according to claim 1, characterized in that the pair of levers consists of a (19) main lever (22) pivotally mounted at least in the normal case and a secondary lever (23) rotatably mounted on the main lever (22),
in that the motor (15) drives a main control cam (28) acting on the main lever (22) and a secondary control cam (29) cooperating with the secondary lever (23),
in that the hook (26) is seated on the secondary lever (23) and is rotated by the auxiliary control cam (19) between the engagement position (26.2) and the release position (26.1) with respect to the web (12)
and that the main cam (28) pivoted in the drive case, the main lever and the pivotable bearing (31) from the secondary lever (23) between the low position (31.1) and the high position (31.2) with pivoted (42). Closure according to claim 1 or 2, characterized in that the lever pair (50) and the motor (20) in a housing (21) are arranged. Closure according to claim 1, 2 or 3, characterized in that the main control cam (28) and the sub-control cam (29) are arranged coaxially and are driven in conformity (35) by the motor (15). Closure according to one of claims 1 to 4, characterized in that the closing device (20; 20 ') is arranged next to the lock and its closing part in the vehicle. Closure according to one of claims 1 to 4, characterized in that the active part (50, 15) of the closing device (20; 20 ') in the lock and the passive part (12) of the closing device (20; 20') in the closing part of the castle are integrated. Apparatus according to claim 5 or 6, characterized in that the web (12) of the closing device (20) is arranged separately from the closing part of the lock. Apparatus according to claim 5 or 6, characterized in that the web (12) of the closing device (20) is integrated in the closing part of the lock. Apparatus according to claim 5 or 6, characterized in that the closing part of the lock also acts as a web (12) of the closing device (20). Device according to one of claims 1 to 9, characterized in that the lock is reversible by a drive between its closed position and open position. Device according to one of claims 2 to 10, characterized in that in the raised position (31.2) of the pivot bearing (31) of the secondary lever (23) of the hook (26) occupies its engagement position (26.1) relative to the web (12), while the lock is in its closed position. Apparatus according to claim 11, characterized in that in the closed position, the lock instead of the closing device (20) holds the flap (10) or the door to the body. Apparatus according to claim 12, characterized in that in the closed position of the lock, the motor (15) further moves the pair of levers (50) until the pivot bearing (31) from the secondary lever (23) on the main lever (22) from its high position (31.2) in its low position (31.1) is swung back,
that the hook (26) in this further movement from its engagement position (26.2) is rotated back into its release position (26.1) and then the motor (15) is switched off by a sensor. Device according to one of claims 12 to 13, characterized in that on the secondary lever (23) a manual emergency operation (33) acts, with which in case of failure of the drive (15, 17, 18), the voltage source and / or the electrical control opening the flap (10) or door is possible. Device according to one of claims 2 to 14, characterized in that the secondary lever (23) has an additional arm (27) on which the traction means (33) engage the emergency operation. Device according to one or more of claims 2 to 15, characterized in that the secondary lever (23) has a control arm (24) which cooperates with the auxiliary control cam (29). Closure according to one or more of claims 2 to 16, characterized in that the main lever (22) has a control arm (36) which cooperates with the main control cam (28). Apparatus according to claim 16 or 17, characterized in that the control arm (24) of the sub-lever (23) and / or the control arm (36) of the main lever (22) in the direction of the sub-control cam (29) and main control cam (28) are spring-loaded. Closure according to one or more of claims 2 to 18, characterized in that the main lever (22) and the sub-lever (23) are under the action of a common spring load. Device according to one or more of claims 2 to 19, characterized in that the secondary lever (23) has an actuating arm (25), at the free end of the hook (26) sits. Device according to one of claims 2 to 20, characterized in that the closing device (20) has a protection (anti-trap) against entrapment of objects between the flap and the door on the one hand and the body of the vehicle on the other. Apparatus according to claim 21, characterized in that in the closing device (20 ') the pivot bearing (49) from the main lever (22) is open in the opposite direction to the closing movement,
that the main lever (22) in the region of its pivot bearing (49) has a spring load (51) which normally the bearing end (44) from Main lever (22) in the pivot bearing (49) stationarily positioned, but in Einklemmfall in the pivot bearing (49) moves (54). Apparatus according to claim 22, characterized in that in the region of the bearing end (44) of the main lever (22), a further sensor (pinch protection sensor 52) is arranged, which responds to the displacement (54) of the bearing end (44) and the motor (15). stops. Apparatus according to claim 22 or 23, characterized in that the open pivot bearing (49) consists of a slot (47) in the main lever (22) and a stationary pin (46). Apparatus according to claim 22 or 23, characterized in that the open pivot bearing is formed of a pin on the main lever and a stationary, slot-like receptacle.

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