EP1485558B1 - Lock, especially for automotive doors, flaps or the like - Google Patents

Description

The invention is directed to a lock of the type mentioned in the preamble of claim 1, e.g. is used in motor vehicle doors or flaps. Such locks are equipped with rotary traps, which have both a pre-rest and a main branch, in which a pawl can come. When closing an open door, sometimes a gap remains open, because the pawl only comes into the pre-rest of the catch. Then the catch stops in its Vorrastlage. To close the gap, motorized closing aids are used which engage the catch and which move the catch to a final position in which the pawl engages the main catch. This final situation is referred to below as the "main lodge".

A lock of the above type is known from WO 99/49155. Similar locks are also known from DE-A-10043574 and DE-A-19650826. In WO 99/49159 a lock is described in which a gear is arranged on a motor drive, which has two output paths. The first output travel can act as a closing aid on the catch and the second output travel as an opening aid on the pawl. On the transmission, a transmission member is provided, via which in each case a driven path can be set effectively, while the other Output path is set inactive, depending on whether the drive is to be used as an opening or closing aid.

The disadvantage of this lock is first that a rear derailleur and another drive is required for the conversion of the transmission element, whereby the lock is quite expensive to manufacture.

From WO 98/27301 a lock with a motorized closing and opening aid is also known. In the function of an opening aid in the first direction of rotation of the drive, a pawl is first actuated via a rotary member arranged on the transmission axis. After release of the catch by the pawl of the second output path is then coupled via drivers to the rotational movement of the axis of rotation and set in operation. The opening movement of the rotary latch is then further supported via the second output path. In the function of a closing aid, in the second direction of rotation of the drive, a closing movement is transmitted to the rotary latch after a slamming of the door on the second output path while the latch is moved into its locking position on the rotary latch.

A disadvantage of this lock is that time-consuming coupling of the two output paths to the drive complex coupling and control means are necessary to allow the coupling to the exact time required. As a result, this lock is relatively expensive to manufacture.

The object of the invention is to develop a lock of the type mentioned, which works reliably and avoids the disadvantages mentioned above. This is inventively achieved by the measures mentioned in claim 1, which has the following special significance. The peculiarity of the measures described is to provide output gears on a transmission, which are constantly coupled to the drive. By this measure, the lock according to the invention is inexpensive to manufacture and very reliable due to its simple structure.

The activation or deactivation of the output paths can take place via the direction of rotation of the drive. By doing so, the use of a Transfer member and a rear derailleur with additional drive or the use of coupling means for the connection of a driven path superfluous.

If the lock according to the invention is to be opened, the pawl must be moved out of the main catch on the rotary latch. The lifting of the pawl is effected by an actuating element, which lifts out the pawl from the main catch or pre-catch on the rotary latch by its radially enlarging in the direction of rotation actuating surface. As soon as the pawl releases the locking connection with the rotary latch, the rotary latch moves into the open position due to a restoring force acting on it.

In cases where a load is generated by a load which is greater than the restoring force for the movement of the rotary latch in the open position, the features of claim 2 according to the invention come to bear. Remains so the catch due to the load, for example, ice in the castle, in the closed position, although the signal "open" has been passed to the drive, the pawl is pivoted out of the main catch on the catch and can, since the catch is not moved into the open position, fall back into this main branch, since the pawl is spring loaded. To prevent this, a load lever is provided in the lock, which holds the pawl in the pivoted position. Once the load that acts against the restoring force of the catch is removed, for example, the ice has melted and the catch can move into the open position, a pivoting moment is exerted by the catch on the load lever, through which the load lever in one about its rest position on the pawl out, lying at a distance to the pawl position is pivoted, in which the pivot path of the pawl is free, so that the pawl can swing back due to their spring load.

Fig. 1

eine schematische Darstellung des erfindungsgemäßen Schlosses in seiner Hauptrastlage der Drehfalle mit eingezeichneten Lasthebel,

Fig. 2

eine schematische Darstellung des Schlosses in der Hauptrastlage der Drehfalle ohne Lasthebel,

Fig. 3

eine schematische Darstellung des Schlosses nach Freigabe der Drehfalle,

Fig. 4

eine schematische Darstellung des Schlosses in der Offenlage,

Fig. 5

eine schematische Darstellung des Schlosses in der Offenlage und in einer Überhublage der Klinke,

Fig. 6

eine schematische Darstellung des Schlosses in der Offenlage und einer Endstellung des Betätigers,

Fig. 7

eine schematische Darstellung des Schlosses mit einer Drehfalle in der Vorrastlage,

Fig. 8

eine schematische Darstellung des Schlosses mit einer in der Hauptrastlage blockierten Drehfalle,

Fig. 9

eine schematische Darstellung des Schlosses mit einer sich öffnenden Drehfalle,

Fig. 10

eine schematische Darstellung des Schlosses mit einem Lasthebel in einer Überhublage,

Fig. 11

eine schematische Darstellung des Schlosses mit einer Drehfalle in Offenlage.

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 shown in one embodiment. Show it:

Fig. 1

a schematic representation of the lock according to the invention in its Hauptrastlage the catch with drawn load lever,

Fig. 2

a schematic representation of the lock in the main latching position of the catch without load lever,

Fig. 3

a schematic representation of the castle after release of the catch,

Fig. 4

a schematic representation of the castle in the open position,

Fig. 5

a schematic representation of the castle in the open position and in a Überhublage the latch,

Fig. 6

a schematic representation of the castle in the open position and an end position of the actuator,

Fig. 7

a schematic representation of the castle with a catch in the Vorrastlage,

Fig. 8

a schematic representation of the lock with a locked in the main ratchet catch,

Fig. 9

a schematic representation of the lock with an opening catch,

Fig. 10

a schematic representation of the castle with a load lever in a Überhublage,

Fig. 11

a schematic representation of the castle with a catch in the open position.

The structure of the castle will be explained in more detail with reference to FIGS. The door lock includes a rotary latch 20, which is under a restoring force F1 of a spring 23. This spring 23 is placed on a mandrel 28 of the rotary latch 20 and moves within a receiving channel 14 of the housing 11. The rotary latch 20 shown is pivotally mounted on a journal 21 in the housing 11 and is normally attached to the door not shown in detail. Instead of a door, it could also be a flap, e.g. Tailgate of a motor vehicle act. The rotary latch 20 has a slot-shaped receptacle 24 for a here bow-shaped closing member 13. When the closing member 13 is removed from the rotary latch 20, as shown for example in Fig. 6, this is held by its spring load F1 in its open position. The catch 20 remains accessible with its receptacle 24 from the outside. The closure member 13 is normally attached to a post of the door. The arrangement of the closing part 13 can also be done on the door, the rotary latch 20 is then positioned with its housing 11 fixed to the post.

Starting from the illustrated release position of the rotary latch 20 of FIG. 6, the closing part 13 moves into the receptacle 24 when the door is closed and thereby pivots the rotary latch 20 against its restoring force F1 in the direction of the arrow 29 from the open position in FIG From Fig. 7 apparent Vorrastlage. The catch 20 has at least two notches 25, 26, namely a pre-catch 25 and a main catch 26. In these notches 25, 26 engages a pawl 30 with a latching hook 34 when the catch 20 in its already mentioned Vorrastlage of FIG or is located in one of Fig. 1 apparent final Hauptrastlage.

When the pre-locking position of Fig. 7 is reached, a gap normally remains between the door and the door jamb. In general, a motorized closing aid is provided which engages the rotary latch 20 and the catch moves against the restoring force F1 in the Hauptrastlage, where then the latching hook 34 of the pawl 30, the main catch 26 of the rotary latch 20 engages behind. This Haupttrastlage shown in Fig. 1 is effected by the pawl 30 by a spring force F2. For this purpose, a spring 33 is arranged on the latch 30, which loads the pawl 30 about the pivot axis 31 in the direction of the rotary latch 20.

In FIG. 1, a load lever 50 is further shown, which is pivotable about a pivot axis 51 and held by a spring 52 which is supported on a stop 53 of the load lever 50, in a rest position shown in FIG. This load lever 50 further has a recess 56, in which a bearing pin 41 engages, which shows the axis of rotation for a better shown in Fig. 2 actuator 40. This Fig. 2 shows the catch 20 and the pawl 30 also in the main latching position. In this case, the representation of the load lever 50 was omitted in order to better illustrate the actuating element 40. This actuator 40 has a radially increasing in the direction of rotation 42 actuating surface 44 and a locking surface portion 45, which, as will be described later, after the lifting of the pawl 30 is driven by a locking element 37 of the pawl 30. This actuator 40 has in Fig. 2 is still no contact with the pawl 30th

If the closing part 13 releases the rotary catch 20, the rotary latch 20 strives to move in the opening direction of rotation 22 due to its restoring force F1. However, the catch 20 is prevented, as shown in FIGS. 1 and 2, by the pawl 30 therefrom. After release of the rotary latch 20 by the closing part 13, a drive start signal to the drive part 15 are triggered, said drive member 15, the actuating element 40 in the direction of rotation 42 is set in motion. The drive energy of the drive member 15 is transmitted, for example via a pinion 16 to a gear 43 which is operatively connected to the actuator 40. In the embodiment shown, the gear 43 and the actuator 40 move about the same axis of rotation 41. The gear 43 and the actuator 40 are not only rotationally connected to each other, but in this case even formed in one piece.

When the actuating element 40 functioning as an opening aid moves in the direction of rotation 42, the actuating element 40 comes into contact with the pawl 30 after a certain angle of rotation (FIG. 3). The actuating surface 44 runs against an actuating arm 38 of the pawl 30. Upon further rotation of the actuating element 40 in the direction of rotation 42, the pawl 30 against its restoring force F2 from the Main load or the Vorrastlage excavated at the catch 20. This release position of the pawl 30 is shown in FIG. After this release of the pawl 30, the actuator 40 continues to rotate in the direction of rotation 42 and by the radially increasing actuating surface 44, the pawl 30 is brought to the circumference of the rotary latch 20 at a distance h. This Überhublage the pawl 30 is shown in FIG. 5. With the radius R1, the actuating surface 44 of the actuator 40 has reached the greatest distance from the axis of rotation 41 and the pawl 30 is at a maximum distance h from the rotary latch 20. As shown in the example, it is possible to continue the actuator 40 in FIG To move the direction of rotation 42, wherein the radius of the actuating surface 44 does not change. That is, the pawl 30 remains in this Überhublage. This actuating surface 44, which does not change in radius R2 = R1, also referred to as plateau surface, secures the pawl to a specific time interval in the overstroke, without using expensive coupling or control means for this purpose.

In Fig. 3 it is shown that the pawl 30 may be additionally equipped with a trigger leg 32 which engages through an opening 18 of the housing 11, with which the pawl 30 can be moved from the locking positions on the rotary latch 20.

It can also be seen from FIGS. 4 and 5 that the pawl 30 has a further arm 35 with an end-side pressure surface 36. When the pawl 30 moves with its latching hook 34 from the main or Vorrastlage in the release position, this signal switch 17 is released and the signal switch 17 can in this case, the Signal the release position of the latch 30.

In Fig. 6, the end position of the actuating element 40 in the direction of rotation 42 is shown. In this end position, the actuating element 40 releases the actuating arm 38 of the pawl 30, so that the pawl 30 pivots in the direction of the rotary catch 20 due to its spring force F2. If the actuator 40 move in the reverse direction to the direction of rotation 42, which is not effected by the drive member 15, but can happen due to the load of the actuator 40, this reverse rotational movement is prevented by one end of the actuator arm 38 of the pawl 30 arranged blocking element 37 moves against the locking surface portion 45 of the actuating element 40 and thus blocks the actuating element 40 in the reverse direction of rotation. This blocking can be further assisted by an eccentric disk 46 provided on the actuating element 40, which in this example is moved about the same axis of rotation 41 and is arranged between the gear 43 and the actuating surface 44. This eccentric disc 46 also has a locking portion 47, which beats at the moment where the locking member 37 of the pawl 30 against the locking surface portion 45 of the actuating surface 44, at a corresponding portion of the arm 35 of the pawl 30, as is apparent from Fig. 6 ,

It is possible that after this end position of the actuating element 40 is reached, a drive stop signal or a signal for returning the transmission is triggered to the normal position.

In Fig. 6, the open position is shown. During the closing operation, the closing part 13, which moves into the slot 12 of the housing 11, displaces the rotary catch 20 by abutting one side of the receptacle 24 of the rotary latch 20 and moving the rotary latch 20 in the closing direction of rotation 29 by a corresponding thrust, the rotary latch 20 first reaches the pre-locking position, in which the latching hook 34 of the pawl 30 engages in the pre-catch 25 on the rotary latch 20. This is shown in FIG. 7. Upon further rotation in the closing direction of rotation 29 against the restoring force F1 of the rotary latch 20, the rotary latch 20 enters the main latching position, which is shown in FIGS. 1 and 2.

Starting from Fig. 1, the function of the load lever 50 will now be explained. In this Hauptrastlage the catch 20 and the pawl 30, the load lever 50 is in a rest position. This load lever 50 is pivotable about the axis 51 against the spring force F4.

The load lever 50 serves as an opening aid, in which it prevents re-insertion of the pawl 30 into the rotary latch 20 after the lifting of the pawl 30 by the actuating element 40. For example, is the rotary latch 20 in its movement in Opening direction 22 blocked by snow load or ice, although a signal to the drive element 15 is triggered, whereby the actuator 40 moves the pawl 30 out of the main latching position or the pre-latching position, the rotary latch 20 remains in the main latching position or the Vorrastlage. In order to prevent the reinsertion of the pawl 30 in the rotary latch 20, which has not yet moved out of the main or Vorrastlage at the end of the rotational movement of the actuating element 40, engages behind a projection 54 of the load lever 50, the swung-out actuating arm 38 of the pawl 30. Der Load lever 50 can move due to the spring force F4 in the pivot path 19 of the pawl 30 and thus prevent the pivoting back of the pawl 30 in the catch. This is shown in FIG. 8. The rotary latch 20 is blocked in its opening direction 22. It is still in the main lair. The pawl 30 has already been swung out by actuation of the actuating element 40 and is prevented by the load lever 50 from falling back into the main catch of the rotary latch 20. If the blockage of the rotary latch 20 is released, for example, the ice in the lock 10 melts, the rotary latch 20 can automatically move in the opening direction of rotation 22 due to the restoring force F1. During this rotational movement, the rotary latch 20 comes with its shoulder 27 in contact with the load lever 50, said shoulder 27 presses against a peripheral portion 55 of the load lever 50. This is shown in FIG. 9. Since the spring force F1 of the rotary latch 20 is greater than the spring force F4 of the load lever 50 it is pivoted against the spring force F4 about its axis of rotation 51. By the force exerted by the shoulder 27 of the rotary latch 20 pivoting the load lever 50 is moved to a lying on its rest position on the pawl 30, lying at a distance to the pawl 30 position in which the pivot path 19 of the pawl 30 is free. Due to its spring force F2, the pawl 30 can move in the direction of the rotary latch, ie, into its rest position. This is shown in FIG. The pivot axis 51 of the load lever 50 is spaced from the axis of rotation 41 of the actuating element 40. The pivot of the axis of rotation 41 of the actuating element 40 is disposed in the recess 56 of the load lever 50. This recess 56 has a corresponding shape to allow the pivoting movement 57 of the load lever 50. For this purpose, the recess 56 preferably has a pivoting movement 57 aligned longitudinal extent, so that the pivot pin, which is the axis of rotation 41 of the actuating element 40, in the rest position of the Load lever 50 is preferably located at one end or centrally in the recess 56 and abuts in the pivoted position of the load lever 50 at the other end of the recess 56.

As can be seen from FIG. 10, the load lever 50 releasing the pawl 30 moves in the opposite direction of rotation to the opening direction of rotation 22 of the rotary latch 20.

In Fig. 11, the open position of the door is then shown. The locking element 13 is located outside the rotary latch 20. The rotary latch 20 is in the rest position and the load lever 50 is held by the rotary latch 20 in its pivoted position. The load lever 50 pivots back to its rest position only when closing, ie moving the catch in the closing direction 29, the shoulder 27 of the catch 20 releases from the load lever 50 and allows pivoting back of the load lever 50 in the rest position.

List of reference numbers:

10

lock

11

casing

12

slot

13

closing part

14

Recording channel for 23

15

driving part

16

pinion

17

signal switches

18

Opening for 32

19

Swinging lane of 30

20

catch

21

Bearing journals of 20, rotation axis

22

Opening direction of rotation

23

feather

24

Recording for 13

25

first position

26

primary position

27

shoulder

28

mandrel

29

Closing direction of rotation

30

pawl

31

Bearing journals of 30, swivel axis

32

trip leg

33

feather

34

latch hook

35

poor

36

print area

37

blocking element

38

actuating arm

39

contact surface

40

actuator

41

Bearing journals of 40, rotation axis

42

direction of rotation

43

gear

44

actuating surface

45

Blocking surface section

46

eccentric

47

blocking portion

50

load lever

51

Bearing journals of 50, swivel axis

52

feather

53

attack

54

head Start

55

peripheral portion

56

recess

57

swing torque

F1

Spring force on 20

F2

Spring force on 30

F3

Pressure force of 40

F4

Spring force on 50

H

blowout

R1

radius

R2

radius

Claims (18)

1. Lock, especially for vehicle doors, hatches, or the like,

   - with a rotary latch (20), into which a locking member (13) travels when the door is closed, thus pivoting the rotary latch (20) from an open position via a prelatching position into a main latching position;

   - with a catch (30), which, when in the prelatching position, engages in a prelatching stop notch (25) provided on the rotary latch (20) and, when in the main latching position, engages in a main stop notch (26) located on the rotary latch (20);

   - with a motorized opening aid for the door, comprising a drive unit (15), which uses a power takeoff path to rotate the actuating element (40), which acts directly on the catch (30);

   - the actuating element (40) having an actuating surface (44), the radial dimension of which increases in the rotational direction (42);

   - and the actuating element (40) having, on its actuating surface (44), a blocking surface section (45), which serves to prevent the actuating element (40) from rotating in the reverse direction, which blocking surface section is gripped by a blocking element (37) of the catch (30) after the catch (30) has been lifted; and

   - means for preventing the catch (30) from dropping back into the rotary latch (20) after the catch (30) has been lifted,

   
   characterised in that
   a load lever (50), which can be pivoted about the pivot axis (51) and moved into the path (19) along which the catch (30) pivots, prevents the catch (30) from dropping back into the rotary latch (20) after the catch (30) has been lifted; and in that a pivoting moment in the pivoting direction (57) is exerted directly on the load lever (50) by the rotary latch (20) as the latch rotates in the opening direction (22), as a result of which the load lever (50) is pivoted into a position beyond its resting position on the catch (30), i.e. a position at a certain spacing from the catch (30), in which position the catch (30) is free to pivot along its path (19).
2. Lock according to claim 1, characterised in that, after the rotary latch (20) has been released by the locking member (13), a drive start signal for the drive unit (15) can be transmitted, said drive unit (15) causing the actuating element (40) to move in the rotational direction (42).
3. Lock according to one of claims 1-2, characterised in that the drive energy of the drive unit (15) can be transmitted via a pinion (16) to a gear wheel (43), the gear wheel (43) being operatively connected to the actuating element (40).
4. Lock according to one of claims 1-3, characterised in that the gear wheel (43) and the actuating element (40) have the same axis of rotation (41), and in that the gear wheel (43) and the actuating element (40) are connected for rotation with each other, preferably forming a single unit.
5. Lock according to one of claims 1-4, characterised in that the actuating element (40) functioning as an opening aid moves in rotational direction (42), and in that the rotary latch (20) moves in the opposite rotational direction (22) during the opening process.
6. Lock according to one of claims 1-5, characterised in that, during operation, the actuating element (40) functioning as an opening aid runs up against an actuating arm (38) of the catch (30) and lifts the catch (30) out of the main latching position or out of the prelatching position on the rotary latch (20) counter to a restoring force (F2).
7. Lock according to one of claims 1-6, characterised in that, after the catch (30) has been lifted out of the main latching position or out of the prelatching position on the rotary latch (20), it is brought by the actuating element (40) into an overstroke position, as a result of which the hook (34) on the catch (30) is held a certain distance (h) away from the circumference of the rotary latch (20).
8. Lock according to one of claims 1-7, characterised in that the actuating surface (44) of the actuating element (40), the radial dimension of which increases in the rotational direction (42), is at its maximum distance from the axis of rotation (41) at radius (R1), as a result of which the catch (30) in its overstroke position is thus at its maximum distance (h) from the rotary latch (20), and in that, upon the further movement of the actuating element (40) in rotational direction (42), the radius (R2) of the actuating surface (44) remains unchanged.
9. Lock according to one of claims 1-8, characterised in that, mounted on the end of the actuating arm (38) of the catch (30), is the blocking element (37), which the blocking surface section (45) of the actuating element (40) encounters on rotating in the opposite direction of rotation (42).
10. Lock according to one of claims 1-9, characterised in that the blocking surface section (45) which has run up against the blocking element (37) triggers a drive stop signal and/or a signal for restoring the gearbox to the home position.
11. Lock according to one of claims 1-10, characterised in that the catch (30) has another arm (35) with a thrust surface (36) at the end, which actuates a signal switch (17) only when the catch (30) is located in the main stop notch (26) on the rotary latch (20).
12. Lock according to one of claims 1-11, characterised in that a spring loading (F2) causes the hook (34) of the catch (30) to drop into the main stop notch (26) or into the pre-stop notch (25) of the rotary latch.
13. Lock according to one of claims 1-12, characterised in that - after the catch (30) has been raised - the rotary latch (20) is automatically guided by the spring loading (F1) acting on it out of its prelatching position or out of its main latching position into its open position.
14. Lock according to one of claims 1-13, characterised in that, to prevent the catch (30) from dropping back into the rotary latch (20), a spring-loaded (F4) projection (54) of the load lever (50) blocks the outward-pivoted actuating arm (38) of the catch (30) and thus prevents the catch (30) from pivoting along its path (19).
15. Lock according to one of claims 1-14, characterised in that the load lever (50) can be moved around a pivot axis (51).
16. Lock according to one of claims 1-15, characterised in that the pivot axis (51) of the load lever (50) is at a spacing from the axis of rotation (41) of the actuating element (40), while the pivot pin of the actuating element (40) constituting the axis of rotation (41) engages in a recess (56) in the load lever (50), the recess (56) preferably having a longitudinal dimension aligned with the pivoting movement (57).
17. Lock according to one of claims 1-16, characterised in that the pivoting moment which moves the load lever (50) out of the resting position is produced by a shoulder (27) on the rotary latch (20), which in this case pushes a circumferential section (55) of the load lever (50) in the pivoting direction (57).
18. Lock according to one of claims 1-17, characterised in that, when the load lever (50) is releasing the catch (30), it is moving in the pivoting direction (57), whereas the rotary latch (20) is moving in the opposite rotational direction (22).

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