EP0653010A1

EP0653010A1 - Blocking device for a motor vehicle door.

Info

Publication number: EP0653010A1
Application number: EP93912626A
Authority: EP
Inventors: Eckhard Ursel; Werner Dilger; Uwe Schaper
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 1992-07-11
Filing date: 1993-06-26
Publication date: 1995-05-17
Anticipated expiration: 2013-06-26
Also published as: DE4222868A1; US5676003A; EP0653010B1; WO1994001644A1; JPH07508804A; DE59301691D1

Abstract

A central locking system for motor vehicles has all the opening and closing functions occurring in normal operation on the failure of individual components. A vehicle fitted therewith can be opened and locked even without operational door closing motors (50). The outside door handles (13) can be pulled without resistance or effect with the vehicle locked. To this end, a control cam (47) lifts an actuating arm (32) so that a door handle lever (35) can be operated without effect on the actuating arm (32).

Description

Locking device for doors of a motor vehicle

State of the art

The invention is based on a locking device according to the preamble of the independent claims. From DE 31 50 620 AI an electric motor driven door lock for a motor vehicle door is known, in which a rotary latch is brought into its closed position via a crank mechanism and a toggle lever arrangement. This construction requires high engine power and a large number of individual components. Otherwise, a door which is motor-locked with this device can no longer be opened if the motor fails.

Advantages of the invention

The locking device according to the invention with the characterizing features of the independent claims, in contrast, has the advantage of a wide range of functions with a simple construction and little stressed components. The individual locks of the locking device are thereby lighter and smaller and the force to be applied by the motor is reduced to a minimum. The locking device is also designed so that the vehicle can be mechanically opened and locked as usual, even if an electrical component fails, without the central locking function. The embodiment according to claim 1 has the additional advantage that the door handles used to open the doors can be pulled through when the vehicle is locked and no forces are exerted on the internal components of the lock. An otherwise existing risk of breakage of the components involved is thus avoided.

The training according to independent claim 2 has the additional advantage that only the force to actuate one of the two unlocking levers must be applied simultaneously by the motor. As a result, the engine power is reduced by half compared to a simultaneous actuation of both levers.

The measures listed in the dependent claims allow advantageous developments and improvements of the locking device. It is particularly advantageous to mount movable catches on the unlocking levers, which are preferably arranged on bendable actuating arms. These can be brought into two different positions by the control segments of the control member, in which they can either be gripped by door handle levers connected to the door handles or in which they pass the drivers unaffected. The operating arms have the advantage of being very light, so that only a small motor power is required.

The arrangement of unlocking levers and door handle levers on a common axis has the advantage that when the door is opened there is no additional friction between unlocking levers and door handle levers. This ensures that the lock functions reliably and minimizes the force that the driver has to exert on the door handle. The emergency locking and unlocking levers enable the affected door to be opened and closed even if an engine fails or breaks down.

drawing

An embodiment of the invention is shown in the drawing and explained in more detail in the following description. Figure 1 shows an interior view of a lock, with the motor, motor bracket and control member omitted for ease of understanding. FIG. 2 shows a view from the same perspective with the door handle levers omitted. Figure 3 shows a side plan view of the same lock and Figure 4 shows an interior view from viewing direction IV in Figure 2. Figures 5 and 6 each show a control member for a front and for a front door of a motor vehicle with the arrangement of the control sectors. Figures 7 to 9 show an unlocked lock. Figure 10 shows a centrally locked lock. Figures 11 and 12 show a lock with child protection, and Figures 13 and 14 show an anti-theft lock. The emergency release is shown in FIG. 15 and the emergency release is shown in FIGS. 16 and 17.

Description of the embodiment

The locking device provided for motor vehicles has door locks 10 which are assigned to the individual doors 11 of the motor vehicle. In FIG. 1, a lock 10 is shown in simplified form, and a door 11 with a locking cylinder 12, outer door handle 13 and inner door handle 14 is shown schematically. Each individual door lock 10 has a support plate 15, on which the inner functional parts of the lock are arranged. Each door lock also includes a locking pin 16 which is arranged in the associated body-fixed door handle. The locking pin 16 engages when the door is closed 11 in a slot-shaped recess 17 of the support plate 15. A fork-shaped rotary latch 20, which serves as a rotatable locking element, also projects into this. This has two legs 21, one of which can optionally be locked with a blocking element 23 rotatable about an axis 22. In Figure 1 an unlocked rotary latch is shown with the door open. The blocking element 23 is always pushed into its latching position by a return spring 24, so that a closing blade 25 arranged thereon engages behind one of the legs 21 of the rotary latch 20 when the door is closed (cf. FIG. 2 and FIG. 12). When closing the door, however, the legs 21 push the closing blade 25 of the blocking element 23 back, so that a snap-in is made possible.

The blocking element 23 can also be opened by actuating its arm 26, which is opposite the closing blade 25. This takes place via two approximately congruent unlocking levers 27 and 28, which are rotatably arranged side by side on the axis 22. The unlocking levers 27, 28 each have extensions 29 which bear against the arm 26. In its rest position shown in FIG. 1, the unlocking lever 27 or 28 bears against a stop 30. The unlocking levers 27, 28 have joints 31 to which an actuating arm 32 for the outer door handle 13 and 33 for the inner door handle 14 is articulated within limits. On the actuating arms 32, 33, a protruding driver 34 is attached to each side. Like the unlocking levers 27, 28, two door handle levers 35 each associated with them are also pivotably mounted about the axis 22. Each of these door handle levers 35 has a driving lug 36 which cooperate with the driving members 34.

For emergency locking, the door lock 10 has an emergency button which can be operated manually from the inside and which acts on an emergency locking lever 37. At its lock end is a switching pin 38 arranged, which interacts both with an emergency locking hook 39 of the outer actuating arm 32 and with a reset plate 40 on the door handle lever 35 for the inner door handle 14.

The door handle levers 35 are each urged by a tension spring 41 in the direction of the stop 30, pressing them against the associated unlocking levers 27, 28 when they strike a contact plate 42 with the stop 30. On the axis of the joint 31 between the release levers 27, 28 and the actuating arms 32, 33, a spiral spring 43 is arranged, the projecting arms of which are applied to the unlocking levers 27 and 28 and the actuating arms 32 and 33 in such a way that the actuating arms in FIG 1 to be pushed down on the axis 22.

FIG. 2 shows the further components of the door lock 10 that are not shown in FIG. 1 for reasons of clarity. For this purpose, the door handle levers 35 are omitted. The core of the door lock 10 is a control member 44 acting on the actuating arms 32, 33. This is rotatably held in a control member carrier 45. The axis of rotation perpendicular to the control member carrier 45 and the extent of the actuating arm 32 is denoted by 46. The control member 44 has two control cams 47, 48 located next to one another. The outer control cam 47 shown in FIG. 2 acts on the actuating arm 32 for opening the door from the outside. The control member 44 also has a gear 49 which is arranged concentrically with the axis of rotation 46 and which meshes with the worm of a small electric motor 50. The motor 50 is fastened on the control member carrier 45, which is pivotally mounted about an axis 51.

The control member carrier 45 has a holding arm 52 which projects beyond the control member 44 and which is supported by an emergency release lever 53 designed as an eccentric in abutment with a stop 54 on the Support plate 15 is held. The emergency release lever 53 is fastened to a pivot pin 55 which is mounted in a side wall 56 of the support plate 15 which is angled by 90 ° and can be rotated in the locking cylinder 12 by actuating a key 57 (cf. FIG. 1). An eccentric 58 is further fastened to the outside of the side wall 56 with the pivot pin 55.

In Figures 1 and 3, the eccentric 58 is shown with a lever arm 59, on which a rod 60 connected to the lock cylinder 12 is rigidly connected. The other end engages in an elongated hole 61 of a second lever arm 62 on the locking cylinder 12 (cf. FIG. 3). The elongated hole 61 has the effect that the eccentric 58 is influenced only when the key 57 is turned to the right in FIG. 3 into the N position, but not when the key 57 is turned to the left in the I, II, III positions. The eccentric 58 acts on a slide 64 guided on the support plate 15. Lifting the slide 64 releases the emergency locking lever 37.

FIG. 4 shows a side view of a lock 10 from viewing direction IV in FIG. 2, the side wall 65 of the support plate 15 being cut away. The individual components visible there have already been explained in the previous figures. The control cams 47 and 48, which act on the actuating arms 32 and 33, are particularly clearly visible here. The control cam 47 is directed upward and lifts the actuating arm 32 so that the driving lug 36 on the door handle lever 35 for the outer handle cannot reach the driver 34. In this position of the control member 44, the door in question cannot be opened from the outside. The control cam 48 is rotated downward, so that the driver nose 36 of the door handle lever 35 can grip the driver 34 here. When the door handle lever 35 for the inner door is actuated, the actuating arm 33 is taken along, so that the catch 20 is released. In FIGS. 5 and 6, control elements 44 for the driver's door and front door are shown in individual representations. The control member 44 can be rotated in four different positions by the motor 50 in the direction of the arrow. It has four sectors 1 to 4, which are assigned control cams or not, depending on the locking function. The control cam 47 for the outer door actuation covers the sectors 1 and 2. The control cam 48 behind it in FIG. 5 for the inner door actuation, however, only covers the sector 2. The control element 44 'in FIG. 6 differs only by a different design of the control cam 48'. from the control member 44. The control cam 48 'for the inner door actuation covers not only the sector 2 but also the sector 3. Opposing cams 47/48 are always designed and arranged such that they do not both start in the same sector and when the control member continues to rotate in the direction of the arrow only one of the two actuating arms 32, 33 is raised at a time.

The same locking functions for the four sectors 1 to 4 apply to both control members 44, 44 '. The locking function is determined by the sector in the door lock 10 (see also FIG. 2) slightly obliquely towards the top right toward the actuating arm 32 is directed. Sector 1 means "centrally locked", ie the outer door handles 13 are ineffective, all doors can be opened from the inside by pulling the inner door handles 14. If the sector 2 effectively, the vehicle is "antitheft", ^'ie by pulling ineffective all door handles can, none of the doors can be open from the outside or from within. "Child safety" is active in sector 3, ie front doors can be opened from the inside and outside, but the front doors can only be opened from the outside. In sector 4, all doors are "unlocked", i.e. they can be opened both from the inside and outside by pulling the door handles. The position of the actuating arms 35 and other levers of the lock 10 in the different locking functions is shown in the following figures.

Figures 7 to 9 show the locking function "unlocked", in which the sector 4 of the control elements is effective. Parts that may not be designated have the same reference numerals as in the previous figures. The two actuating arms 32 and 33 are in the same position, their lower position, close to the control members 44. In this position, when the door handles 13, 14 or the door handle lever 35 are actuated, the catches 34 on the actuating arms 32/33 are gripped by the driving lugs 36 on the door handle levers 35 and pulled to the right, so that the respective unlocking levers 27, 28 move away from one another remove their stop 30. This is shown in FIG. 9 for internal actuation. The extension 29 on the unlocking lever 28 presses the blocking element 23 down on its arm 26, so that the locking pawl 25 releases the catch 20. If the emergency locking lever 37 has possibly been actuated here, its arm carrying the switching pin 38 is pressed down by the reset plate 40.

Figure 10 shows the locking function "centrally locked", in which the doors cannot be opened from the outside. Only the lever position for external actuation is shown. The control cam 47 is pivoted upwards as in FIG. 2, so that the sector 1 shown in FIG. 5 is directed towards the actuating arm 32. The actuating lever 32 is raised so that the driving lug 36 does not reach the driver 34 and the door handle lever 35 can be pulled through between control cam 47 and driver 34 without resistance and ineffectively. When the outer door handle is actuated, only the door handle lever 35 moves. The actuating arm 32 and the unlocking lever 27 remain at rest, so that the blocking element 23 also holds the catch 20 in its closed position. The lever position for the interior actuation corresponds to the function in the central locked position as shown in FIGS. 8 and 9, so the doors are unlocked from the inside. The function of the child lock is shown in FIGS. 11 and 12. The control cam 47 for the external actuation does not raise the actuating arm 32, so that opening as in the position according to FIG. 7 is possible here. The control cam 48 'covering the sector 3 for internal actuation, however, raises the actuating arm 33. Exactly as shown in FIG. 10 for the external actuation, when the door handle lever 35 is actuated, a free pull through from the inside is now possible without influencing the blocking element 23 and the rotary latch 20.

The locking function "theft-proof" is shown in FIGS. 13 and 14. Both actuating arms 32 and 33 are raised by the cams 47 and 48 so that both door handle levers 35 can be pulled freely. It is not possible to open the doors from inside or outside.

In Figure 15, an anti-theft door is shown, the z. B. is emergency unlocked due to power failure. For emergency unlocking, the emergency unlocking lever 53 is operated manually with the key, so that it releases the holding arm 52. This moves downward away from the stop 54, whereby the control member 44 with its control cams 47, 48 also dips downward. It is followed by the actuating arms 32 and 33 (33 not shown) due to the action of the springs 43. The lowered actuating arms can now be reached again from the driving lugs 36 of the actuating lever 35. In Figure 15, the lock is already shown in the open position in which the rotary latch 20 is released.

Figures 16 and 17 show an emergency locked lock, which may be required in the event of a power or motor failure. The emergency locking lever 37, which is actuated from the inside of the vehicle in such a way that the switching bolt 38 lifts the emergency locking hook 39 and thus the actuating arm 32, serves for emergency locking. In turn, the driver 34 is outside the swivel range the driving lug 36 arrives so that the door handle lever 35 can be pulled freely for external operation. Figure 17 shows that the doors can be opened from the inside, however: the actuating arm 33 has no emergency locking hook so that it remains in its lowered position and the driver 34 can be gripped by the driving lug 36.

Claims

Expectations

1. Locking device for doors and possibly flaps or hoods of a motor vehicle with at least locks (10) assigned to the doors, outer and inner door handles (13, 14) assigned to them and at least one lock cylinder (12) which can be actuated from the outside, the locks (10 ) each have a locking element (20), in particular a rotary latch, which cooperates with a holding element (16) in the door frame, which can be locked in its closed position by means of a blocking element (23) and unlocked by actuating an unlocking lever (27, 28), whose mobility can be influenced by the position of a control member (44, 44 ') adjustable by means of a motor (50), characterized in that two lock levers (27, 28), each pivotable independently of one another, are provided for each lock (10), each one are associated with one of the door handles (13, 14) in connection door handle lever (35) and that the door handle lever (35) un when actuated depending on each other but depending on the position of the control member (44) either act on the associated unlocking lever (27, 28) or, without influencing it, can be pulled through without effect.

2. Locking device for doors and possibly flaps or hoods of a motor vehicle with at least locks (10) assigned to the doors, outer and inner door handles (13, 14) assigned to them and at least one lock cylinder (12) which can be actuated from the outside, the locks (10 ) each have a locking element (20), in particular a rotary latch, which cooperates with a holding element (16) in the door frame, which can be locked in its closed position by means of a blocking element (23) and unlocked by actuating a locking lever (27, 28), whose mobility can be influenced by the position of a control member (44, 44 ') which can be adjusted by means of a motor (50), characterized in that two lock levers (27, 28) with drivers (34) which can be pivoted independently of one another are provided for each lock (10) are, each associated with a door handle (13, 14) and that the control member (44) has control cams (47, 48), the opposite so ve rsetzt are arranged that when turning the control member (44, 44 ') at the same time at most one of the drivers (34) of the two release levers (27, 28) is actuated.

3. Locking device according to claim 1 or 2, characterized in that the drivers (34), preferably attached to bendable actuating arms (32, 33), are each spring-loaded movably connected to the unlocking levers (27, 28) and that they are connected with the door handles (35) connected to the door handles (13, 14) can be detected.

4. Locking device according to one of the preceding claims, characterized in that the drivers (34) independently of one another by control cams (47, 48) of the control member (44) can be brought into two different positions, the drivers (34) in a position of the Door handle levers (35) can be detected and not in the other.

5. Locking device according to claim 4, characterized in that the drivers (34) or actuating arms (32, 33) can each be raised by one of the control cams (47, 48) and with the control cam (47, 48) turned away again by spring force are lowerable.

6. Locking device according to one of the preceding claims, characterized in that the door handle levers (35) each have driving lugs (36) which, when the lock (10) and actuation of a door handle (13, 14) are actuated, have no influence on the associated driver (34) happen.

7. Locking device according to one of the preceding claims, characterized in that the unlocking lever (27, 28) and the door handle lever (35) of a lock (10) are rotatable about a common axis (22).

8. Locking device according to one of the preceding claims, characterized in that the motor (50) and control member (44) on an axis (51) fixed control member carrier (45) are arranged, which also hold ge by a rotatable emergency release lever (53) becomes.

9. Locking device according to one of the preceding claims, characterized in that the control member carrier (45) rotates downwards when the emergency release lever (53) is turned away, so that the driver (34) follows it into its position which can be reached by the door handle lever (35) .

10. Locking device according to one of claims 8 or 9, characterized in that the emergency release lever (53) is designed as an eccentric and can be actuated by a key from the outside.

11. Locking device according to one of the preceding claims, characterized in that on the inside of the doors for emergency locking a manually operable emergency locking lever (37) is attached, which is attached to the driver (34) or the actuating arm (32). engages for the external locking mechanism and transfers it to its position which cannot be reached by the door handle lever (35).