WO2012130201A2

WO2012130201A2 - Motor vehicle door lock having a double-acting crash safety mechanism

Info

Publication number: WO2012130201A2
Application number: PCT/DE2012/000261
Authority: WO
Inventors: Stephan Mittelbach
Original assignee: Kiekert Aktiengesellschaft
Priority date: 2011-03-31
Filing date: 2012-03-13
Publication date: 2012-10-04
Also published as: WO2012130201A3; DE102011015675A1

Abstract

Regardless of the possible loading direction (6, 7, 15), a blocking lever (5) is pivoted in such a way that the blocking lever (5) reliably blocks the release lever (3) of a motor vehicle door lock. For this purpose, the blocking lever (5) has a specially shaped blocking projection (8), an initiating arm (9) that protrudes beyond the lock housing (2), and additionally a safety mechanism that ensures that the blocking lever (5) cannot affect the release lever (3) during normal operation. Thus, loads directed vertically upward and downward and horizontal loads, for example of the outer door panel (14), are absorbed in order to pivot the blocking lever (5) into and hold the blocking lever in the necessary blocking position.

Description

DESCRIPTION

Motor vehicle door lock with double-acting crash protection

The invention relates to a motor vehicle door lock with a

Lock housing with a catch, pawl and its actuator in the form of a release lever, wherein the release lever of the actuating device is associated with a blocking lever which is formed and arranged in a collision load especially the door lock with the lock housing the release lever.

According to the current safety regulations

Motor vehicle door locks have a so-called crash protection. This is to ensure that in an impact or other accident, the vehicle doors do not open automatically due to the impact and the motor vehicle driver or his companion are thrown out of the door opening. To check this crash protection, the motor vehicle pages are loaded with bar-shaped or even step-shaped angle bodies in order to simulate crashes in this way. Under such loads, the door locks must not open automatically, which is prevented by the release lever is locked by a blocking lever. From the

EP 1 241 305 B1 it is known to lock the actuating or release lever via an associated locking lever, which is supported in the load case via a nose-shaped projection on the body. This stop is usually formed in the lock plate itself, so that the blocking of

Trip lever can be reached in a short way. DE 198 03 871 A1 describes a pivotally mounted on the release lever locking member or a blocking lever that slips in normal operation on a control contour and then can not come. In contrast, the blocking lever is at increased

Acceleration, for example, in the event of a crash on the rigid transmission rod with actuator such as door handle accelerated so strong that the blocking lever is incident and thereby depending on the amount of acceleration against a housing-fixed stop edge is supported and fixed, so that the release lever is thus effectively locked. Here, therefore, the load intensity plays a role, at which point the blocking lever attaches to the housing-fixed stop edge. Further, fuses are known in which a corresponding

pivotable blocking lever is pressed by the deforming door wall to the release lever and this locks. These locking levers are mounted and adapted to receive either the horizontal loads and the vertically coming from above or vertically from below loads and lock the trigger.

The object of the present invention is to provide a blocking lever for motor vehicle doors or for the release levers which is always effective in the case of impact loads acting from the most varied directions.

The object is achieved in accordance with the invention in that the blocking lever arranged above the lock housing has a blocking lug and an initiating arm about an interposed lever axis

is pivotable and limited against one of the lever axis associated spring element on both sides pivotally, but is held during regular actuation in a release lever not blocking position and that the blocking lug the correspondingly shaped release lever is designed to block on two sides.

Characterized in that the outside of the lock housing arranged

Blocking lever on the spring element, preferably a torsion spring or a spring lip in normal operation, the release lever does not lock, however, in the

But load case is pivoted in one or the other direction so that it blocks the release lever with its blocking lug, the release lever can be locked not only in a load direction, but in several load directions. As mentioned, this blocking takes place both in vertically upward and downward acting loads as well as horizontal loads. The blocking nose of the locking lever is the respective loads executed or trained accordingly, which will be explained in more detail later.

A particularly useful embodiment of the invention is that in which the blocking lug of the blocking lever has a recess extending from the edge in the direction of the lever axis for the release lever or a part thereof. This means that the release lever or the corresponding part guided during normal operation engages in this recess of the blocking lever, but leaves the blocking lever completely unaffected. The "split" blocking lug now gives the possibility, in the case of, for example, an impact

depending on the direction of this load either with one or the other part of the blocking lug on the release lever caused to act. This gives the possibility, both from vertical above as well as vertically below as well as coming from the horizontal

To allow loads to act on the blocking lever, so that it then effectively blocks the release lever with its blocking lug.

To ensure during normal operation that the release lever without

Impairment of the blocking lever into the recess provided for it moves in, the recess in the blocking lever is formed as a slightly curved slot, preferably curved end or rounded slot leg ends.

To make sure that the release lever is always safe from

Blocking lever is "detected" when it comes to blocking is in accordance with the

Invention provided that the trigger lever one of the recess

has adapted or good to approach leading approach. This approach, which therefore projects slightly beyond the actual release lever, is inserted into the recess and helps to ensure that the release lever can be moved uniformly during the triggering of the motor vehicle lock and through the

Blocking lever is not obstructed. At the same time, this approach also serves to give the blocking lever a starting point that it can reach or must take, if he should block the trigger, ie if he should ensure in the event of a collision that the motor vehicle lock does not open automatically and endangers the occupants of the vehicle. This correct attachment of the locking lever on the release lever on the one hand and accurate guidance through the approach is achieved in that the approach to the release lever in extension of the stop lug for the tension member

having lever arm is arranged. While the release lever is practically a deliberately folded sheet, a thickened or round piece of metal is used as approach, which can serve as a starting point in this way for the two-sided locking lever. Depending on the load direction, the release lever is pressed once with the "upper" edge and once with the "lower" edge or the nose side against this approach. Therefore, it is very advantageous if the approach to the release lever in extension of the

Lifting eye is arranged for the pulling part having lever arm.

The release lever is locked via the blocking lever practically always in the same position, if the recess slightly eccentric

Running blocking nose and running a slightly larger upper and a slightly smaller lower blocking leg is executed. In this way, it is possible to block the release lever immediately in the rest position, d. H. So let the opening process of the motor vehicle lock not even begin. The blocking lever is either pushed down over the triggering force, in which case the slightly smaller lower blocking leg becomes effective or is pushed upwards and pivoted, so that then the somewhat larger upper blocking leg comes into action.

A further advantageous embodiment provides that the lower locking leg and the upper locking leg are arcuately formed end. They have the same radius whose center is in the pivot point of the blocking lever. The blocking leg slides so behind the approach of the release lever, that this does not move at all can, which can be achieved even with the reverse pivoting movement over the larger blocking legs.

The initiation arm projects beyond the lock housing and of course also via the lever axis. Thus, the initiation arm under load, d. H. So in particular deformation of the body panel quickly and safely his

Blocking function is provided that the initiator of the

Blocking lever at the free end has a two-sided stop reinforcement and a stop limit. Thus, the lever has a type of thickening at the ends, so as to be effective quickly both in the upward load as well as in the level or downward load.

After an optimization is then provided that the

Bump reinforcement is formed bale-shaped or spherical. This means that the freely projecting end of the initiating arm has a corresponding shape so as to be able to pick up the forces acting on the initiating arm safely and quickly and to be able to carry out the correct movement.

During the upward movement of the blocking lever or its initiating arm, the upper blocking leg slides behind the attachment on the release lever and blocks it. This position he reaches after a predetermined

Movement. To prevent him from leaving this position in a further upward movement or stress, it is envisaged that the

Blocking lever on which the blocking lug opposite and lying beyond the lever axis arm is limited to the lock case in the path or is pressed against the countermovement against another part of the lock housing and so ensures that the blocking lever can not leave its locked position again. Even if the free part of the initiating arm were then bent, the blocking position for the blocking lever would still be retained. The invention is characterized in that a fuse for the motor vehicle door locks is provided, which ensures that it locks the release lever of the motor vehicle door lock so that it secures the motor vehicle door lock in its closed position regardless of the direction of impact or load direction by the locking lever forming the fuse. Even with unfavorable loading direction so a correspondingly secured vehicle door lock remains in the closed state and the person sitting in the vehicle can not be thrown by opening doors or other door locks outside. Rather, the overall housing of the motor vehicle remains a complete unit, the accident victims or the

Car occupants as far as possible and provided secures.

Further details and advantages of the subject invention will become apparent from the following description of the accompanying drawings in which a preferred embodiment with the necessary details and individual parts is shown. Show: a lock housing of a motor vehicle with laterally projecting blocking lever,

a partial view of an open lock housing with blocking lever and release lever,

the release lever in the open position of the door lock, a load case, for example, a door of a

Motor vehicle with horizontal and directed from the top towards the earth and load

a load case in which the load comes from below, for example through the bumper of a motor vehicle involved in the collision.

The door closure 1 shown in FIG. 1 is a lock associated, for example, with a side door, whose individual parts are accommodated in the lock housing 2 and therefore can not be seen here. The im Lock housing 2 housed rotary latch and pawl are actuated here via an actuator here the release lever 3, for example, from a door handle, not shown here, to the motor vehicle lock in the

Bring opening position. Thereafter, the trigger lever 3 is then not shown here springs in the starting position, d. H. in the closed position

brought back. The actuation of the release lever 3 takes place here via the

Zugteil 4, for example, construction move.

The release lever 3 is assigned a blocking lever 5 special design. This blocking lever 5 has an in Fig. 1 only partially visible blocking lug 8 and the above initiating 9, which are pivotable about the lever axis 10 together. Indicated are the loads that can act on the Initiierarm 9 and thus on the entire blocking lever 5, wherein the horizontal effective load with 6, vertically from below

next load is denoted by 7 and the load coming from above is denoted by 15. With the blocking lever 5 shown and described here, all loads can be taken from the said directions and exploited to the effect that the blocking lever 5 effectively blocks the release lever 3 and thus secures the lock as a whole.

Figure 2 shows an enlarged view of the blocking lever 5 and the lower end of the release lever 3. Visible here is the large blocking lug 8, which is associated with the release lever 3, as well as the laterally projecting

Initiierarm 9. The lever axis 10 is a Federeiement 1 1 associated with two projecting spring arms 12, 13, via which by means of the lever attachment 33 of the blocking lever 5 is held in the position shown in Figure 2. Namely, in this position, the release lever 3 with his approach 20 in the

Recess 17 are introduced into the blocking lug 8, without causing blocking. Rather, the opening of the lock can now be effected via the readout lever 3 or the pulling part 4. Only in case of load, for example, by a crash, the blocking lug 8 and the blocking lever 5 is in a Position brought in which he effectively locks the trigger 3. This is shown in the following figures.

Through the recess 17 with its arcuate course and the recess depths 18, the blocking lug 8 is in a larger

Blocking leg 24 and a smaller locking leg 25 divided. The smaller blocking leg 25 and the larger blocking leg 24 are at the

Recess 17 opposite side 27 slightly rounded. They have the same radius. The edge 16 of the blocking lug 8 and the blocking lever 5 is designed bent so as to ensure a secure engagement behind the neck 20 of the trip lifter 3. Incidentally, the recess 17 is shaped like a slot 19 so as to allow the insertion and guiding of the projection 20 of the

Tripping lever 3 to be ensured within the blocking lever 5. The release lever 3 is in the region of the lever arm 22 with the

Lifting eyelet 21 slightly folded to optimize the movement and the guide relative to the blocking lever 5, the tip or in some ways the extension carries the projection 20. Also clearly visible in FIG. 2 is that the spring element 11 arranged around the lever axis 10, preferably a torsion spring or a spring lip, with its spring arms 12, 13 for the opening position of the spring

Blocking lever 5 provides. The opposite to the blocking lug 8 on the other side arm 31 of the blocking lever 5 carries the already mentioned lever attachment 33 which engages between the two spring arms 12, 13 and part of the lock case or the blocking lever 5. In addition, these spring arms 12, 13 are guided in the attachment 33 in local slots.

FIG. 3 now shows the position in which the motor vehicle lock is open. For this purpose, the trigger lever 3 is guided far into the recess 17 and indeed into the recess depth 18. It can be seen that while the approach 20 of the triggering lever 3 is not impaired in its freedom of movement. Thus, can the release lever 3 are easily pivoted about the tension member 4 in the position shown. Both the blocking lug 8 of the blocking lever 5 as well as the far projecting Initiierarm 9 are completely unaffected and let the release lever 3 and its approach 20 happen.

FIG. 4 now shows a collision case in which the door outer wall 14 is damaged, dented in here. Since the Initiierarm 9 at the free end 28 a

Stop reinforcement 29 has, it is due to the deformation of the

Door outer wall 14 and the resulting loads 6 and 15 pressed down, d. H. in the direction of the bottom, not shown here, so that at the same time the opposite end, so the blocking lug 8 is pivoted with its smaller blocker leg 25 behind the projection 20 of the trigger lever 3 and pressed so that it is not due to the impact and the forces generated thereby from his Position, d. H. move out of the closed position of the vehicle door lock. The rounding 26 of the smaller locking leg 25 has a positive effect here, because it cleverly engages behind the projection 20 and the entire release lever 3 in this

closed position effectively locks or locks. The occurring deformation 35 of the door outer wall 14 here acts as indicated in the two directions 6 and 15, wherein the end stop reinforcement 29 selectively transfers the forces occurring to the entire initiating arm 9.

Figure 5 shows a load case, which occurs for example when the load from below, so for example by a bumper occurs. The deformation that occurs is marked 36. Based on these

Loading, which is provided with the reference numeral 7, the initiating arm 9 is moved upward until it reaches the stop limit 30. At the same time the blocking lug 8 and that the larger blocking leg 24 is moved down so that he cleverly and specifically engages behind the projection 20 and thus prevents the trigger lever 3 moves. Rather, it is selectively locked in the closed position and the vehicle door or a other closure remains in the closed position until the blocking lever 5 is selectively pushed back into its original position.

The two representations according to FIGS. 4 and 5 make it clear that, for the first time, a blocking lever 5 has been created which ensures, independently of the direction of loading, that the triggering lever 3 of the door closure 1 remains locked in the closed position in the event of loading.

All mentioned features, including the drawings to be taken alone, are considered to be essential to the invention alone and in combination.

Claims

1. Motor vehicle door lock with a lock housing (2) with a catch, pawl and its actuating device in the form of a release lever (3), wherein the release lever (3) of the actuating device is associated with a blocking lever (5), which in a collision load especially the door lock (1 ) with the lock housing (2) the release lever (3) blocking and arranged,

characterized,

in that the blocking lever (5) arranged above the lock housing (2) has a blocking nose (8) and an initiating arm (9), about which a lever axis (10) arranged therebetween can be pivoted and against a spring element (11) associated with the lever axis (10). limited pivotally on both sides, but is held during regular operation in a release lever (3) non-blocking position and that the blocking lug (8) the correspondingly shaped release lever (3) is designed to block on two sides.

2. Motor vehicle door lock according to claim 1,

characterized,

the blocking lug (8) of the blocking lever (5) has a recess (17) extending from the edge (16) in the direction of the lever axis (10) for the

Release lever (3) or a part thereof.

3. Motor vehicle door lock according to claim 2,

characterized,

the recess (17) is designed as a slightly curved slot (19) in the blocking lever (5).

4. Motor vehicle door lock according to one of the preceding claims, characterized

in that the release lever (3) has a projection (20) which is adapted to the recess (17) or is easily guided therein.

5. Motor vehicle door lock according to claim 4,

characterized,

that the projection (20) on the release lever (3) in extension of the

Stop lug (21) for the tensile part (4) having lever arm (22) is arranged.

6. Motor vehicle door lock according to one of the preceding claims, characterized

that the recess (17) slightly eccentrically the blocking lug (8) extending and a slightly larger upper and a slightly smaller lower

Blocking leg (24, 25) forming is executed.

7. Motor vehicle door lock according to one of the preceding claims, characterized

the lower blocking limb (25) and the upper blocking limb (24) are arc-shaped at the ends.

8. Motor vehicle door lock according to claim 1,

characterized,

the initiating arm (9) of the blocking lever (5) has a two-sided stop reinforcement (29) and a limit stop (30) at the free end (28).

9. Motor vehicle door lock according to claim 8,

characterized,

in that the stop reinforcement (29) is bale-shaped or spherical.

10. Motor vehicle door lock according to claim 1,

characterized,

in that the blocking lever (5) is fixed to the lock box on the part arm (31) lying opposite the blocking nose (8) and beyond the lever axis (10).