EP1639218B1 - Lock for vehicle doors or lids - Google Patents

Abstract

According to the invention, when the door is locked, a locking part ( 10 ) is displaced into a rotary latch ( 20 ), which is first pivoted from its open position into a preliminary detent position. The rotary latch ( 20 ) is spring-loaded ( 25 ) in the direction of its open position and is usually supported on a catch ( 30 ) by means of an initial detent section ( 21 ). The rotary latch ( 20 ) is then rotated further by means of a motor-driven closing aid with the aid of a drive mechanism ( 53 ) and an eccentric element ( 50 ), until it reaches a primary detent position, in which the catch ( 30 ) rests on a primary detent section of the rotary latch ( 20 ). To obtain a reliable lock that can be universally used, a toggle-joint lever pair ( 40 ) and a spring-loaded follower ( 33 ) are provided between the eccentric element ( 50 ) and the rotary latch ( 20 ). One fixed end ( 41 ) of said toggle-joint lever pair ( 40 ) is rotatably mounted in a locally fixed bearing ( 14 ) and the other free end ( 42 ) is forcibly guided by guide elements ( 15 ) and simultaneously supports the spring-loaded follower ( 33 ). The toggle-joint lever pair ( 40 ) is supported on a control curve ( 51 ) of the eccentric element ( 50 ). The closing displacement is attained by the extension and/or bending of the toggle-joint lever pair. The follower then seizes the rotary latch ( 20 ) and propels it in a motor driven manner from its preliminary detent position into its primary detent position.

Description

The invention is directed to a lock referred to in the preamble of claim 1. The lock is located in the door or flap and has a catch. On the door jamb there is a closing part, which moves into the rotary latch during manual closing of the door or the flap and this pivots first from a spring-loaded open position into a pre-locking position. The Vorrastlage the catch is secured by a spring-loaded pawl. Then, an engine of a closing aid is turned on via control means, which transfers the catch from the pre-locking position into a main lashing position via a gear and an eccentric. The Hauptastastlage the catch is also secured by the pawl, which is incident in a provided on the catch main catch.

There are locks with a motorized closing and opening aid (WO 98/27301 A2), in which the transmission has two output paths, between which a transmission part is pivotally mounted. This lock has proven itself, but it is space and costly.

It is a lock of the type mentioned in the preamble of claim 1 known (DE 101 33 092 A1), which is formed cheaper compared to the aforementioned prior art. In this known lock the gearbox of the engine is constantly engaged and acts on two eccentrics, one of which acts as an eccentric Zuziehhilfe. This eccentric has a cam, which moves in one direction behind a shoulder of the rotary latch upon rotation of the motor and this, as already mentioned, rotated by a Vorrastlage in a Hauptrastlage motor. As a result, the retracted in the rotary latch closing part is taken and brought the door in its final closed position on the vehicle.

In a lock of another kind (DE 43 11 786 C2), where the catch has neither a pre-catch nor a main catch, the spring-loaded pawl is arranged at the free end of an actuating rod, the other end is moved by a crank motor. At the free end of the control rod engages a stationary mounted rocker. If when closing the door, the catch is taken, the movable latch falls due to their spring load behind a paragraph of the catch. If the crank drive is then moved by a motor, the pawl, which is movable with the adjusting rod, carries the catch up to its full closed position. Then the engine stops, with the pawl engaged with the shoulder. At the same time, a nose provided on the pawl travels under a fixed stop, which stops the mobility of the free end of the adjusting rod. The fixed stop is required in order to lift the pawl manually or by motor out of the catch in the closed position and to hold it until the catch has passed into its open position due to its spring load.

The invention has recognized that the disadvantage of the known lock lies in its direct coupling between the eccentric and the rotary latch. For this reason, a lock adapted to the respective circumstances must be developed for different vehicles. This not only requires the production and installation of different lock elements, but also complicates the storage and repair service of damaged locks. Thus, it is not possible in the mentioned known castle, simply change the gear ratio when changing the gear ratio between the engine and transmission, without at the same time to provide the catch with a different outline profile, in which the shoulder for the eccentrically moving cam occupies a different position. In the known lock, it was therefore necessary to develop for each vehicle, adapted to the circumstances, their own lock and keep it ready when needed. This led to a large construction cost and a confusing storage support.

The invention has for its object to develop a reliable, inexpensive lock referred to in the preamble of claim 1 species, which can be used in vehicles of different types, because at most only minor adjustments are required. This is inventively achieved by the measures listed in claim 1, which have the following special significance.

In the invention, a knee joint lever pair is used between the eccentric and the rotary latch, which carries at the one, free end a resilient driver. The driver is based on its spring load at least in the pre-locking position on a stationary end face in the housing. Serving for the storage of the driver free end of the knee joint lever pair is forcibly guided by guide means in the lock housing. The other, fixed end of the knee joint lever pair is rotatably received in a stationary bearing. The eccentric has a cam on which the knee joint lever pair is supported under spring load. The driver has a shoulder, which is associated with a counter-shoulder on the catch. The shoulder and the counter-shoulder are indeed spaced apart in the open position, but in the motor pulling the eccentric knee joint lever pair is transferred between different stretch and / or buckling positions, in which the shoulder moves from the driver against the counter-shoulder of the catch and these from the Vorrastlage transferred to the Haupastastlage.

In the invention, there is only an indirect connection between the eccentric and the rotary latch, namely via the knee joint lever pair and the driver articulated thereon. To apply the lock according to the invention on vehicles of other types, it is readily possible, the eccentric, which initially has a defined cam, by an eccentric with a Replace control curve other profile, the rest of the structure of the castle remains unchanged. If necessary, but it is additionally or alternatively readily possible to expand the knee joint lever pair and / or the driver and replace it with other analog components with different proportions and / or profiles. For example, a man can change the arm lengths of the knee-joint lever pair. Because of this easy adaptation results in a universal usability of the lock according to the invention. As a result, a production of the lock according to the invention in much larger quantities is possible, whereby the production costs can be reduced.

As a guide means for the free end of the knee joint lever pair, it is recommended to use a handlebar, one end of the handlebar is articulated at the free end of the knee joint lever pair, while the other end of the handlebar is received in a stationary bearing. This fixed bearing can also be the bearing of the catch.

Fig. 1a

eine schematische Draufsicht auf das geöffnete Schlossgehäuse, wo sich die Schlossteile in einer sogenannten "Vorrastlage" befinden, die dann vorliegt, wenn die Tür manuell in eine Zwischenposition gebracht worden ist, die noch nicht der endgültigen Schließposition der Tür entspricht,

Fig. 1b

das gleiche Schloss und die gleiche Lage der Schlossteile wie in Fig. 1a, wobei einige der zu oberst liegenden Schlossteile entfernt worden sind, nämlich ein Kniegelenk-Hebelpaar,

Fig. 2a+2b,

in einer der Fig. 1a und 1b entsprechenden Darstellung, das gleiche Schloss, beim Start einer motorischen Zuziehhilfe im Schloss,

Fig. 3a+3b

das gleiche Schloss am Ende der durchgeführten Zuziehhilfe, wo sich die Bauteile in einer "Überhublage" befinden, und

Fig. 4a+4b

das Schloss, wenn die Schlossteile in eine sogenannte "Hauptrastlage" gelangt sind, welche der vollen Schließposition der Tür entspricht.

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 schematically in an embodiment. Show it:

Fig. 1a

a schematic plan view of the open lock housing, where the lock parts are in a so-called "pre-rest position", which is present when the door has been manually brought to an intermediate position that does not yet correspond to the final closed position of the door,

Fig. 1b

the same lock and the same position of the lock parts as in Fig. 1a, wherein some of the uppermost lock parts have been removed, namely a knee joint lever pair,

Fig. 2a + 2b,

in a representation corresponding to FIGS. 1a and 1b, the same lock, when starting a motorized closing aid in the lock,

Fig. 3a + 3b

the same lock at the end of the performed Zuziehhilfe where the components are in a "Überhublage", and

Fig. 4a + 4b

the lock, when the lock parts have come into a so-called "main latching position", which corresponds to the full closed position of the door.

The lock has a lock housing 11 arranged on the door and a closing part 10 seated on the door jamb. In the lock housing 11, a rotary latch 20, which has a receptacle 23 for the closing part 10, sits on a first stationary bearing bolt 12. When the door is in its open position, the catch takes an open position not shown in detail in the lock housing 11, where the opening of the receptacle 23 is in alignment with a slot 13 of the housing 11. The rotary latch 20 is spring-loaded in the direction of its open position, as illustrated by the arrow 25 in Fig. 1a and rests in the open position on not shown in detail end stops.

The door is initially closed manually. In this case, the closing part 10 enters the receptacle 23, abuts its inner flank and thereby rotates the latch 20 in the opposite direction to the spring load 25 up to the "pre-locking position" indicated by the auxiliary line 20.1 in FIG. 1b. In this Vorrastlage 20.1 moves a spring-loaded in the sense of the force arrow 35 pawl 30 in a first, provided on the rotary latch 20 Vorrast 21. The pawl 30 is mounted on a second, fixed in the lock housing 11 bearing pin 32 and engages behind in this case with its locking point 31st the fall-side pre-catch 21. As a result, the catch 20 is initially secured in its Vorrastlage 20.1; the door is in a temporary closed position.

As is apparent from Fig. 1a, a pair of levers 40 is disposed in the lock housing 11, which is connected to each other by a knee joint 43 and therefore hereinafter briefly "knee joint lever pair" should be referred to. The one end 41 of the knee joint lever pair 40 is mounted on a third stationary bearing pin 14 in the lock housing 11 and should therefore be referred to hereinafter as the "fixed end". The other end 42 of the knee joint lever pair 40 is indeed in Lock housing 11 freely movable, but is forced out of guide means. These guide means consist in the present case of a link 15, one end of the handlebar 16 is articulated at the free end 42 of the knee joint lever pair 40 and the other end of the handlebar 17 is received in a stationary bearing. Space saving way serves in the present case, the bearing 12 of the rotary latch 20 as a handlebar bearing.

For the sake of clarity, in Fig. 1b, as already stated, the knee joint lever pair 40 has been omitted; remained recognizable only the bearing point on the free lever pair end 42 for the handlebar 15. At this bearing point this free lever pair end 42 also a driver 33 is hinged. As shown in FIG. 1b, the driver 33 is spring-loaded in the sense of the force arrow 37. Due to this spring load 37, the driver is supported in the pre-locking position 20.1 on a stationary end face 18 in the lock housing 11. This shoulder 34 is associated with a counter-shoulder 24 on the rotary latch 20. In the open position 20.1 according to FIG. 1b, a distance 36 is provided between the shoulder 34 and the counter shoulder 24.

This spring load 37, which is also illustrated in FIG. 1 a, ensures, in conjunction with the guide means 15, that the knee joint lever pair 40 is resiliently supported on a control cam 51 of a motor-driven eccentric 50. The associated motor 52 is arranged in the region of the lock housing 11. The motor acts on a schematically indicated gear 53 whose output is a shaft 54. On the shaft of the eccentric 50 is rotatably attached.

When the door and the catch 20 has reached its pre-engaged position 20.1 of Fig. 1a and 1b, the motor 52 is turned on. This can be done by sensors not shown in detail, which then respond when the lock parts are in their, this Vorrastlage 20.1 characterizing position reached. Then, the eccentric 50 is rotated via the motor 52 in the direction of the arrow 55 of Fig. 1a and leaves its there marked with 50.1 rest position. This rest position 50.1 is in the open position of the rotary latch described above, until, as I said, the Vorrastlage 20.1 is reached.

FIGS. 2a and 2b show, in a representation analogous to FIGS. 1a and 1b, a particular "intermediate position" during the eccentric further rotation 55 of the eccentric 50, which is illustrated there by the corresponding auxiliary line 50.2. This rotational position 50.2 affects the position of the knee joint lever pair 40; his knee joint 43 is pressed down. Because of the positive guidance of the link 15 but, as shown in FIG. 2b, its free end 42 is pivoted by the link 15 about the bearing pin 12, whereby the driver 33 comes with its shoulder 34 into contact with the counter shoulder 24 of the case 20. For this purpose, provided in the lock housing, already described end face 18 is profiled suitable.

In the further rotation 55 of the eccentric 50, following the intermediate position of Fig. 2a and 2b, consequently, the rotary latch 20 is entrained by the driver 33; There is a motor "Zuziehhilfe" of the door with respect to their provided on the door jamb closing part 10 instead. In Fig. 2a and 2b, the beginning of this closing aid is shown, where the catch 20 is still initially in its from Fig. 1a and 1b apparent Vorrastlage 20.1. This changes in the transition of the eccentric 50 in his from Fig. 3a and 3b apparent "maximum position", which is illustrated there by the auxiliary line 50.3.

In the rest position 50.1 of the eccentric 50 according to FIG. 1a, the two levers of the knee joint pair 40 assume a comparatively small angle marked 44.1. Then there is an illustrated with the auxiliary lines 40.1 in Fig. 1a "buckling" of the toggle lever pair 40 before. In the maximum position 50.3 of Fig. 3a, the two levers of the knee joint pair 40 include a large, marked with 44.2 angle. There is essentially an "extended position" of the knee joint lever pair 40 that is indicated by the auxiliary line 40.2 in FIG. 3a.

In Fig. 3a, the aforementioned "Zuziehhilfe" has reached its maximum. The free end 42 of the knee joint lever pair 40 has moved further under guidance effect of the arm 15. As a result, the driver 33 was taken and turned over his shoulder 34, the rotary latch 20 to its bearing pin 12 on. The rotary latch 20 has been brought into a rotational position indicated by the auxiliary line 20.2 in FIG. 3b, which is to be designated as "overhanging position". The detected closing part 10 is, as is apparent from Fig. 3b, even deeper into the interior of the lock housing eleventh been involved. In its Überhublage 20.2, the catch 20 has turned so far that the pawl 30 with its locking point 31 due to their illustrated by the arrow 35 spring load behind a second, provided on the rotary latch 20 main catch 22 can snap. In this case, the pawl 30 may be held in its position aligned with the main catch 22 by means of schematically illustrated with 38 rotational stops. Between the locking point 33 and the main catch 22 can, as Fig. 3b shows, still a free gap 19 remain. This changes but shortly thereafter, because the engine 52 continues to run.

What happens then can be seen from Fig. 4a and 4b. The eccentric 50 has again reached its position 50.1 of FIG. 1a. Then the motor 52 is stopped again. This can be done by limit switches, sensors or the like. As a result, the knee joint lever pair 40 returns to its creased position 40.1 characterized by the small angle 44.1. Then, the free end 42 of the knee joint lever pair 40 is again in its initial position of Fig. 1a, whereby the there-hinged driver 33 reaches again its already apparent from Fig. 1b original position on the housing-side end surface 18 with his shoulder 34. The associated counter-shoulder 24 on the rotary latch 20 is far away from the shoulder 34, as can be seen from the route marked 26 in Fig. 4b.

The latter is because the released catch 20 due to their spring load 25 can turn back only to the extent of the free gap 19 described in Fig. 3b, because then, as Fig. 4b shows, the catch 20 with its main catch 22 at the locking point 31 of Latch 30 comes to support. As a result, during the remaining rotation 55 of the eccentric 50 according to FIG. 4a, the rotary latch 20 is secured in its position illustrated by the auxiliary line 20.3 in FIG. 4b, which position may be referred to as the "main latching position". Then the retracted closing part 10 assumes its final position in the lock housing 11. The door is in its final closed position where the elastic seals between the door and the vehicle door opening are compressed. The effect of the "closing aid" according to the invention has ended.

To open the door, as usual, only the pawl 30 with its locking point 31 under the main catch 22 of Fig. 4b needs to be pulled away, in the opposite direction to its spring load 35. This can be done in various ways, e.g. again by the same motor 52, which is not shown in detail. The restarting of the motor 52 can take place by means of a remote control, wherein again a stop in a pre-locking position 20.1 can take place. The opening of the door can also be done mechanically by means of an inner or outer door handle, which acts on the pawl 30 via a link chain not shown in detail. If main latch 20.3 should be locked, e.g. via a lock cylinder, it will be previously provide for unlocking by means of a remote control means or by means of an electric or mechanical key.

The lock according to the invention can be used equally well for vehicles of different types. Any adaptation work is quick and easy. These consist e.g. It is to replace the eccentric 50 shown in FIGS. By another, which has a better adapted to the needs control cam 51. Additionally or additionally, one could also replace the shape and dimension of the knee joint lever pair 40 by such another embodiment, as well as the driver 33 and / or the handlebar 15 could be replaced with elements of other profile.

When using a handlebar with his one bearing end 17 this could also be articulated instead of a stationary bearing point 12 at a mitbeweglichen with the rotary latch 20 bearing point. Instead of a link 15 could serve as a guide means and a housing-fixed curve along which the free end 42 of the knee joint lever pair 40 is forcibly guided or rolling.

LIST OF REFERENCE NUMBERS

10

closing part

11

lock housing

12

Bearing, first bearing pin in 11 for 20

13

Slot in 11 for 10

14

Bearing, third bearing pin in 11 for 43

15

Guide means, handlebars

16

first bar end of 15 at 42

17

second bar end of 15 at 12

18

Fixed endface for 33 in 11

19

free gap between 31, 22 (FIG. 3b)

20

catch

20.1

Vorrastlage of 20 (Fig. 1b, 2b)

20.2

Latching position of 20 (Fig. 3b)

20.3

Main load position of 20 (Fig. 4b)

21

Pre-rest of 20

22

Main stop of 20

23

Recording in 20 for 10

24

Counter-shoulder to 20 for 34

25

Arrow of the spring load of 20

26

free distance between 34 and 24 (Fig. 4b)

30

pawl

31

Lockout of 30

32

Bearing, second bearing bolt at 11 for 30

33

takeaway

34

Shoulder at 33 for 24

35

Power arrow of the spring load of 30

36

Distance between 24, 34 (Fig. 1b)

37

Arrow of the spring load of 33

38

Rotation stop for 30 (Fig. 3b)

40

Toggle joint lever pair

40.1

Buckling position of 40 (FIGS. 1a, 4a)

40.2

Stretched position of 40 (FIG. 3a)

41

fixed end of 40

42

free end of 40

43

Knee joint area of 40

44.1

small angle at 40.1 (FIGS. 1a, 4a)

44.2

large angle at 40.2 (Figure 3a)

50

eccentric

50.1

Rest position of 50 (FIGS. 1a, 4a)

50.2

Intermediate position of 50 (Figure 2a)

50.3

Maximum position of 50 (Fig. 3a)

51

circumferential cam of 50

52

Engine for 50

53

Transmission between 52 and 50

54

Output shaft of 53 for 50

55

Arrow of the rotary motion of 50

Claims (8)

1. Lock, for doors or flaps on vehicles,
   having a fixedly mounted rotary latch (20) into which a locking member (10) moves when the door or flap is closed and initially pivots the rotary latch (20) from an open position into a preliminary detent position (20.1),
   the rotary latch (20) being spring-loaded (25) in the direction of its open position,
   having a fixedly mounted spring-loaded (35) catch (30) which in the preliminary detent position (20.1) drops into a preliminary detent (21) provided on the rotary latch (20),
   having a motorised (52) closing aid for the door or flap, comprising a transmission (53) with an eccentric (50),
   having control means for switching the motor (52) on and off,
   while in the switched on position the movement (55) of the eccentric (50) moves the rotary latch (20) from the preliminary detent position (20.1) into a main detent position (20.3), which is secured by the catch (30) dropping into a main detent (22) of the rotary latch (20),
   characterised in that
   between the eccentric (50) and the rotary catch (20) are provided a toggle joint lever pair (40) and a spring-loaded follower (33),
   in that the follower (33) is hinged to the free end (42) of the toggle joint lever pair (40)
   and the follower (33) is supported by its spring-loading (37), at least in the preliminary detent position (20.1) of the rotary latch (20), on a fixed end surface (18),
   in that the free end (42) of the toggle joint lever pair (40) is forcibly guided by guide means (15) in the lock housing (11),
   while the other, fixed end (41) of the toggle joint lever pair (40) is rotatably mounted in a fixed bearing (14),
   in that the eccentric (50) has a control cam (51) on which the toggle joint lever pair (40) is supported,
   and in that the follower (33) has a shoulder (34) which in the open position is spaced (36) from a mating shoulder (24) provided on the rotary latch (20)
   but during the motorised (52) closing movement the toggle joint lever pair (40) is extended (40.2) or bent (40.1), as a result of which the shoulder (34) of the follower (33) is engaged by the mating shoulder (24) of the rotary latch (20) and further rotates the rotary latch (20) out of the preliminary detent position (20.1) into the main detent position (20.3).
2. Lock according to claim 1, characterised in that the toggle joint lever pair (40) are supported on the eccentric (50) in the region (43) of the joint thereof.
3. Lock according to claim 1 and 2, characterised in that the guide means consist of a guide element (15) one end (16) of which is jointed to the free end (42) of the toggle joint lever pair (40),
   while the other end (17) of the guide element is received in a fixed bearing (12).
4. Lock according to claim 3, characterised in that the fixed bearing of the guide element (15) is also the bearing (12) of the rotary latch (20).
5. Lock according to one of claims 1 to 4, characterised in that the articulation point for the guide element (15) on the toggle joint lever pair (40) is also the articulation point for the follower (33).
6. Lock according to one of claims 1 to 5, characterised in that the spring-loading (37) of the follower (33) consists of a leg spring which sits on the free end (42) of the toggle joint lever pair (40) in the region of the articulation point of the follower (33).
7. Lock according to one or more of claims 1 to 6, characterised in that the eccentric (50) has a defined control cam (51)
   and in that the eccentric (50) can be detached from the motor transmission (53) and replaced by an eccentric with a control cam (51) of a different profile.
8. Lock according to one or more of claims 1 to 7, characterised in that the toggle joint lever pair (40) and/or the follower (33) and/or the guide means (15) can be detached from the housing (11) and replaced by other analogous components with different proportions and/or profiles.

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