EP0942123A1 - Device for locking a cover particularly for a hood of a vehicle - Google Patents

Abstract

The locking device has one motorized assembly on the cover or frame containing movable parts plus a second assembly on the frame or cover containing rigidly located parts and designed for locking engagement with the parts of the first assembly. Parts (2) of at least one of the assemblies are assigned a movement drive (4) moving these automatically into a rest position with an unlocked and open cover. The parts of this assembly practically release the distance between cover and frame of the opening. The one assembly is carried by the cover.

Description

The invention relates to a device according to the preamble of patent claim 1.

Consider the preferred application of the invention, namely one Locking device for the trunk hood of a motor vehicle, one of a Frame-limited trunk opening for loading and unloading in the construction of a Assigned to the motor vehicle, the device basically contains two assemblies, one of which is attached to the trunk lid and the other to the defined frame and the partly motor-driven parts for the production and release of the locking, some rigidly mounted parts, usually in the form of a bolt or eye-like Closing block, have. In the locking device according to DE 38 40 591 A1 the first assembly containing the moving parts attached to the frame, while the the locking block containing second assembly is arranged on the cover side. The first Assembly contains a rotary latch, which is driven by a drive motor Gear transmission is pivotable at least in its locking position in which it Locking block engages behind. An electric hood opener is also mentioned by means of the same drive motor, which is then operated in the opposite direction, also a pivoting of the rotary latch from its locked position into it Opening position enabled. The control of the electric motor takes place via a respective pivot position of the trunk hood-detecting sensor on the frame.

Of importance for the invention is the fact that at least one of the two Assemblies of the locking device - in the cited prior art on Frame attached first assembly with the motor-moving parts, so in particular the catch, - in those used for loading and unloading the trunk Distance between the frame and the trunk lid in the open position protrudes. As is the case with the state of the art discussed, the first assembly of the Locking device attached to the frame so that it projects into this distance, so on the one hand, it affects the loading and unloading process, for example when loading and unloading Unloading crates of drinks, and on the other hand, they are at risk of damage because they are heavy Objects are dragged over the frame. Even if, as in EP 0 038 226 B1 known with certain restrictions, the first assembly of the Locking device sets essentially on the inside of the frame, but results the need, then the second assembly on the trunk lid towards the Arrange the frame above, so that there is less of a risk of touching Objects occurs during loading and unloading, but there is a risk of Injuries to the operator's head. In this known device is used Incidentally, one and the same electric drive motor with the interposition of one Directionally selective transmission device for pivoting two parts, namely one Pawl for a rotary latch and the rotary latch itself. This transmission device contains two push rods that operate via lever arms on the output shaft of the drive motor be moved and depending on the direction of rotation via elongated holes on pins on each of the attack both parts to be swiveled.

Ausfahren" einer der definierten Baugruppen bei geöffnetem Kofferraumdeckel und zum Einfahren" dieser Baugruppe während des eigentlichen Verriegelungsvorgangs. Derartige beispielsweise aus den DE 39 00 508 C2 und 39 35 804 C2 sowie aus der EP 0 143 705 B1 bekannte Vorrichtungen dienen als Schließhilfen, die den bereits niedergedrückten Kofferraumdeckel entgegen der elastischen Kraft einer zwischen ihm und dem Rahmen angeordneten Dichtung in seine endgültige Schließposition niederziehen. Auch bei diesen bekannten Konstruktionen besteht also die Gefahr, daß die relativ zu ihrem Träger (Kofferraumdeckel, Rahmen) bewegbaren Baugruppen der Verriegelungsvorrichtung in den Be- und Entladevorgang störender bzw. zu Verletzungsgefahr Anlaß gebender Weise bei geöffnetem Kofferraumdeckel in den Abstand zwischen diesem und dem Rahmen hineinragen.The further state of the art in the field concerned here also includes locking devices with motor drives for the

Extend "one of the defined modules with the trunk lid open and to the Retracting "this assembly during the actual locking process. Such devices, for example from DE 39 00 508 C2 and 39 35 804 C2 and from EP 0 143 705 B1, serve as locking aids that counter the already depressed trunk lid against the elastic force of a between it and With these known constructions there is also the danger that the assemblies of the locking device which can be moved relative to their carrier (trunk lid, frame) will interfere with the loading and unloading process or give rise to the risk of injury protrude the open trunk lid into the distance between it and the frame.

The invention has for its object to provide a generic device of which no assemblies or parts of it interfere in this distance protrude open trunk lid without the basic Locking function of the device is impaired.

The achievement of this task consists in the characteristic features of the main claim, advantageous embodiments of the invention describe the Subclaims.

In contrast to the last three publications discussed, the invention teaches this Drive in "or Withdraw "(without these expressions specifically referring to a particular type of movement) of the parts that protrude during the locking process via their carrier (trunk lid, frame) in the direction of the other carrier or the relevant component of the locking device when opening the trunk lid or more generally: the respective cover This retracted or retracted position of the parts is also referred to as the rest position.
A particularly elegant and less complex embodiment of the invention results according to claim 4 when only a pivotable rotary latch (optionally also a pivotable fork) protrude from the carrier in the first assembly for gripping a locking block on the other carrier must, since it is then sufficient to use the same swivel axis to pivot the catch (possibly also the fork) beyond its open position until its areas designed to interact with the locking block also no longer protrude from their carrier (trunk lid, frame). In principle, this means a very eccentric pivot bearing of the rotary latch (and possibly the fork) with a positioning of the pivot axis close to the edge of the respective carrier which delimits the distance between the trunk lid and the frame.

In this context, it should be pointed out again that although Illustration of the invention always its preferred application, namely for locking the trunk lid of a motor vehicle, is considered, but this is not Limitation of the invention to this particular case means.

Figuren 1, 2 und 3 die Lage der wichtigsten Teile der Verriegelungsvorrichtung im Verriegelungszustand (Figur 1), im Öffnungszustand vor Hochschwenken des Kofferraumdeckels (Figur 2) und im eingefahrenen Zustand (Figur 3),

Figuren 4 und 5 die in Figur 1 bei IV-IV bzw. V-V markierten Ansichten,

Figur 6 eine Explosionsdarstellung der wesentlichen Teile der ersten Baugruppe der Verschlußanordnung,

Figuren 7 und 8 nochmals im einzelnen die Verhältnisse an Drehfalle und Gabel in ihrer eingefahrenen Lage,

Figuren 9, 10 und 11 die entsprechenden Verhältnisse vor dem eigentlichen Verriegelungsvorgang,

Figur 12 die Drehfalle und die Gabel in Verriegelungsstellung einschließlich eines Bewegungsantriebs für ihnen zugeordnete Profilklinken,

Figuren 13 bis 16 dienen der Veranschaulichung der Ausbildung sowie der Wirkungsweise der Drehfalle in der letzten Phase ihrer Schwenkbewegung in Richtung Verriegelungsstellung,

Figuren 17 bis 20 dienen der Erläuterung der Ansteuerung der verschiedenen Bewegungsantriebe in Abhängigkeit von der jeweiligen Stellung des Kofferraumdeckels während des Öffnungsvorgangs desselben und

Figuren 21 bis 24 veranschaulichen dasselbe während des Schließvorgangs.

An embodiment of the invention for this preferred application is explained below with reference to the drawing. Show it:

1, 2 and 3 show the position of the most important parts of the locking device in the locked state (FIG. 1), in the open state before the trunk lid is pivoted up (FIG. 2) and in the retracted state (FIG. 3),

4 and 5 show the views marked in FIG. 1 at IV-IV and VV,

FIG. 6 shows an exploded view of the essential parts of the first assembly of the closure arrangement,

FIGS. 7 and 8 again show the details of the catch and fork in their retracted position,

FIGS. 9, 10 and 11 the corresponding conditions before the actual locking process,

FIG. 12 shows the rotary latch and the fork in the locking position, including a movement drive for profile pawls assigned to them,

FIGS. 13 to 16 illustrate the design and the mode of operation of the rotary latch in the last phase of its pivoting movement in the direction of the locking position,

Figures 17 to 20 serve to explain the control of the various motion drives depending on the respective position of the trunk lid during the opening process of the same and

Figures 21 to 24 illustrate the same during the closing process.

Looking first at Figures 1, 2 and 3, it is assumed that the Moving parts containing assembly is arranged in the trunk lid, of which only the down towards the not shown, the trunk opening in the Body surrounding frame facing edge 1 is drawn. Looking at Figure 1, So in the locking state shown here, the rotary latch 2 is about its pivot axis 3 by means of a first motion drive 4, containing the electric motor 5 and the Gear transmission 6, pivoted into a position in which it is eyelet-like here Locking block 7 engages with the first profile 8. The locking block 7 is on the side of the also surrounded about the pivot axis 3 pivotable fork 9, but relative to Catch 2 is pivotable.

The two pivotable parts 2 and 9 are by two on the further pivot axis 10 pivotably mounted profile pawls 11 and 12 in that shown in Figure 1 Locked position locked; the two profile pawls 11 and 12 are shown of Figures 1, 2 and 3 in a row, so that they are not separately recognizable here. them is assigned a second motion drive, also containing an electric motor, which will be explained later with reference to Figures 5 and 12. The whole described Arrangement including the components of the motion drives is on the common base or lock plate 13 mounted so that the on the trunk lid or installation work to be carried out on the vehicle when it strikes Limit the locking device assembly.

If the lock according to FIG. 1 is now to be released, i.e. the trunk lid are released for swiveling according to Figure 2, so the profile pawls 11 and 12 successively in the representation clockwise by means of the second Movement drive pivoted so that they successively catch 2 and fork 9 for Release pivoting also clockwise (arrows in Figure 2), whereby initially the catch 2 is pivoted into the position shown in Figure 2, in the first profile 8 releases the locking block for exiting this assembly of the locking device, but at the same time their second profile 14 during this pivoting movement on the Locking block 7 supports, so that the rotary latch 2 now takes over an ejector function, i.e. at least the elastic force originating from the seal in the sense of pivoting the trunk lid in its open position. For that purpose it is second profile 14 executed so that its points of contact with the locking block 7 a the greater the radial distance from the pivot axis 3, the further the Pivoting of the catch 2 clockwise has progressed. Still stick out Rotary latch 2 and fork 9 relatively far down over the lid edge 1 and thus in the Clearance between trunk lid and frame. Because in the assumed case Catch latch 2 and fork 9 are arranged on the cover side, so call them, if not now measures to be explained according to the invention are taken, the risk of Head injuries.

According to the invention, rotary catch 2 and fork 9 according to FIG. 3 are now shared further swiveling clockwise in swivel positions (rest positions) in which they completely above the edge 1 of the trunk lid, so to speak within the same, lie, so that the multi-defined opening for loading and unloading free of protruding parts of this assembly of the closure device.

If you compare the conditions in the locked state, as in Figure 1 in front view and in FIG. 4, as it were, in a side view (longitudinal section through the vehicle) are reproduced (in FIG. 4 the frame is also drawn at 15), with those in FIG. 3 drawn conditions with the trunk lid open, it can be seen that at this embodiment of the invention rotary latch 2 and fork 9 as it were by 180 ° in the Representation of Figures 1 and 3 are pivoted clockwise.

FIG. 2 also shows the second motion drive 16 assigned to the profile pawls 11 and 12 indicated that in its basic structure and its mode of action now The exploded view of FIG. 6 is explained:

You can already see that between the web plate 17 and the lock or base plate 13 explained main components of the locking device, namely rotary latch 2, fork 9, common pivot axis 3 for this, profile pawls 11 and 12 for rotary latch or fork and the pivot axis 10 common to them. Swivel-fixed connection to the rotary latch 2 is accordingly rotatably arranged on the pivot axis 3 gear 18, the one Part of the gear transmission 6 to the drive motor 5 of the first motion drive 4 forms.

On the fork 9 you can see the stop pin 19 with the in the illustration left-hand edge of the rotary latch 2 interacts. Now consider the second Movement drive 16, it contains the one which can also be operated in two directions of rotation Electric motor 20 that works on the gear 21. This is to pivot from Pins 22 and 23 set up on two push rods 24 and 25, the illustration of which end areas pointing to the left elongated holes 26 and 27 for receiving one of each Have pins 28 and 29 on the profile pawls 11 and 12. Here are, as in figure 12 shows the linkages for the pins 22 and 23 on the gear 21 and the various ones Lengths selected so that with - less than one revolution - Pivoting movements of the gear 21 clockwise only those assigned to the catch Profile pawl 11 pivoted clockwise and thus the catch is released, during a pivoting of the gear 21 counterclockwise Swiveling only the profile pawl 12 assigned to the fork 9 causes. This is in individual can also be seen from FIG. 12, where the gearwheel for reasons of clarity 21 is shown twice with the push rods 24 and 25 one below the other.

Looking now at Figures 7 and 8, the rotary catch 2 and fork 9 in their Play rest position, you can see two springs 30 and 31, of which the spring 30th is supported between the catch 2 (at 32) and the fork 9 (at 33) while the spring 31 is attached to the lock plate 13 at 34, while its other end at 35 to the Fork 9 attacks. The spring 30 thus causes a tension of the two pivotable Parts 2 and 9 against each other in the sense of a movement of the catch 2 against the stop 19 on the fork 9. The spring 31 in turn searches for the system containing parts 2 and 9 including the spring 30 relative to the trunk lid (the edge of which is indicated at 1 is) in the representation of Figures 7 and 8 to pivot clockwise. At by the second movement drive 16 release of both parts 2 and 9, this leads to the the stop 36 on the lock plate 13 limited pivoting movement of parts 2 and 9 in their retracted positions even if the first motion drive fails Springs in the counterclockwise direction, always in relation to the Representation of Figures 7 and 8, prestressed profile pawls 11 and 12 are now based the further stop 37 on the lock plate 13.

The catch 2 and fork 9 are now to be retracted from the retracted position shown in FIGS. 7 and 8 for the purpose of locking the trunk lid so they have to be pivoted back counterclockwise by approximately 180 °. This pivoting movement is carried out by means of the first movement drive 4, of which only the gear transmission 6 or more precisely a gear arranged on the wear shaft of the motor in FIGS. 7 and 9 6, which in turn is pivotally connected to the rotary latch 2. The spring 30 causes the rotary latch 2 to take the fork 9 with it, so that the two profile pawls 11 and 12, as it were on the Back "of the parts 7 and 9 support resiliently, can fall into their blocking position shown in FIG. 1 and for the fork 9 in FIGS. 10 and 11, in which they interact with stop faces on the parts 2 and 9, preventing them from pivoting clockwise The spring assigned to the profile pawl 12 is drawn at 38 in Figure 10. A prerequisite for this movement coupling via the spring 30 is, of course, such a dimensioning of this spring that the moment it exerts is greater than the moment of the spring 31 plus the moment on the Profile pawls 11 and 12 acting springs (thus including spring 38) The fork 9 finally strikes against the stop 39 (FIG. 11) assigned to it on the lock plate 13, thus assumes its position shown in FIG. 11, so that the profile pawl assigned to it 12 can easily fall into its blocking position If the motion drive 4 is now switched off with the gear 6, the fork 9 is exercised he swung the spring 31 associated with it somewhat back into its swivel position shown in FIG. 10, in which it is firmly supported on the profile pawl 12.

The rotary latch 2 according to FIG. 9 has not yet reached its locking position, because for this purpose it must be achieved by pushing down or pulling down the trunk lid that the locking block 9 has a certain position Height "is reached, in which it is gripped or gripped behind by the rotary latch 2 which now swivels further. Operated by a sensor (its mode of operation will be explained with reference to FIGS. 17 to 24), the electric motor 5 of the first motion drive 4 is now switched on again, so that the rotary latch 2 is pivoted further via the gear transmission 6. As a result - see FIG. 13 - the rotary latch 2 with its profile 8 engages behind the locking bolt 7. This profile is designed with a slight step so that it acts as a closing aid, ie with support the locking block 7 pulls the trunk lid further down until finally the locking block 7 has reached its end position shown in FIGS. 16 and 12, in which it strikes the buffer 2 'in the catch 2.

As already indicated, the actuation of the motion drives 4 and 16 takes place via Sensors. Figures 17 to 20 serve to illustrate the control by Sensors when opening:

The opening of the lid 40, which is pivotally articulated at 41 and at 42 the one and extendable lock component carries out by swiveling up according to the Arrow. The actuation takes place on the basis of the locked position shown in FIG of the motion drive 16 by remote control, whereby the profile pawls 11 and 12th are successively pivoted into their release position. The motion drive 4 pivots the rotary latch 2 into its unlocked position (Figure 2), so that the cover 40 through Support of the rotary latch profile 14 on the locking block 7 is raised somewhat, for example by 10 mm. This in turn has the result that the force sensor 43 on Frame to the cover motor 44 is given an actuation signal so that this The lid swings further into the open position. The lid 40 has an intermediate open position reached (Figure 19), this is the second sensor 45 to the second Movement drive 16 communicated, which lifts the profile pawl 12 assigned to the fork 9, so that the fork 9 associated spring 31 is formed by the catch 2 and fork 9 Swing the swivel assembly into the rest position (see for example Figures 7 and 8) can. After the cover 40 has been opened completely, the motor 44 is switched off.

The retracted state is also both in Figure 20 and in Figure 21, which is the exit for the closing sequence for the trunk lid 40 shows, by appropriate retracted Representation of the assembly 42 reproduced.

Now the cover 40 is again in its partially open or partially closed position Moved by hand in accordance with the arrow in FIG. 22, the sensor 45 emits a signal the motion drive 4, whereby the catch 2 and fork 9 in Figures 7 and 8 counter pivoted clockwise, i.e. be extended so that the locking block 7 can drive back into the fork. The motion drive 4 is then switched off. Again about 10 mm before the fully closed position of the trunk lid 40 the force sensor 43 is actuated and delivers a signal to the motion drive 4, which then the rotary latch 2 continues to pivot according to FIGS. 13 to 16, so that it engages the locking block 7 reach under and the trunk lid 40 according to Figure 24 in its final closed position can pull.

With the invention, a generic device is accordingly created, which under Use of only a few additional, easily manageable parts automatically, i.e. without Stress on an operator during the locking process functionally protruding parts of the locking device moved into a position in which they are not damaged or cause injury to an operator can.

Claims (19)

Device for locking a cover like a body hood on a an opening delimiting frame with a motor-moving parts containing first assembly on cover or frame and one essentially rigid bearing parts containing, for locking engagement in parts of the first assembly designed second assembly on frame or cover, characterized in that that at least parts (2, 9) of at least one of the assemblies are unlocked and open cover (40) moving automatically into a rest position Movement drive (4) is assigned in which the parts (2, 9) of this assembly Clear the clearance between the cover (1) and frame (15) of the opening. Apparatus according to claim 1, characterized in that the one assembly of the cover (1) is worn. Device according to claim 1 or 2, characterized in that the one assembly is the first assembly. Apparatus according to claim 3, characterized in that the first assembly is a Includes catch (2) for reaching behind a locking block (7) of the second assembly and the motion drive (4) is assigned to the rotary latch (2) and is designed in such a way that the rotary latch (2) from a locking position to an unlocking position, in the distance between the cover (1) and frame (15) of the opening protrudes into the rest position and swings back. Apparatus according to claim 4, characterized in that the first assembly is a Fork (9) with a slot open at one end for guiding the Closing bolt (7) and the motion drive (4) also includes the fork (9) assigned and designed such that it over the rotary latch (2) the fork (9) a normal position for penetration and lateral guidance of the locking block (7), in which is disturbing in the distance between the cover (1) and frame (15) of the opening protrudes, swung into the rest position and back. Device according to claim 5, characterized in that the rotary latch (2) and fork latch (9) pivotable relative to one another on a common pivot axis (3) are arranged that the motion drive (4) with the rotary latch (2) in Contains drive connection (6) standing first drive motor (5) and that between Rotary latch (2) and fork (9) a swivel driver (19, 30) is provided, which - after Lifting swivel locks (11, 12) - the fork (9) with the rotary latch (2) only after Swiveling the same couples in their unlocking position torque-transmitting. Apparatus according to claim 6, characterized in that the pivot drive a fork-side stop (19) for the rotary latch (2) and one in the direction Stop (19) contains torque-loading spring (30). Apparatus according to claim 6 or 7, characterized in that as swivel locks motorized swivel, with stops on the rotary latch (2) and fork (9) interacting profile pawls (11, 12) are provided. Device according to claim 8, characterized in that the profile pawls (11, 12) pivotable relative to one another on a common pivot axis (10) are arranged. Device according to claim 8 or 9, characterized in that both profile pawls (11, 12) a second drive motor (20) which can be operated in both directions of rotation together and between this and the profile pawls (11, 12) a selection mechanism (16) is provided which selectively rotates the second drive motor (20) with a the profile pawls (11, 12) connects to transmit torque. Device according to claim 10, characterized in that the selection mechanism (16) one each via an elongated hole (26, 27) on the rotary latch (2) and that of the fork (9) assigned profile pawl (11, 12) engaging push rod (24, 25) contains and both push rods (24, 25) are articulated on lever arms which are swivel-proof Connect to the second drive motor (20). Device according to one of claims 8 to 11, characterized in that the Profile pawls (11, 12) for support when the catch (2) and Fork (9) stationary stops (37) as well as towards the stops (37) torque acting springs (38) are assigned. Device according to one of claims 1 to 12, characterized in that the Rotary catch (12) for engaging behind the locking block (7) has a first profile (8), its radial distance from the pivot axis (3) with increasing pivoting preferably decreases in one step in the locking direction (locking aid function). Apparatus according to claim 13, characterized in that the rotary latch (2) for temporary support on the locking block (7) on the first profile (8) Opposing second profile (14), the radial distance from the Swivel axis (3) increases with increasing pivoting in the unlocking direction (Ejector function). Device according to one of claims 6 to 14, characterized in that the first Drive motor (5) can be operated in both directions of rotation and it has the contact force first sensor (43) between the cover (40) and frame (15) of the opening assigned. Device according to one of claims 10 to 15, characterized in that the second drive motor (20) a predetermined degree of opening of the cover (40) detecting second sensor (45) is assigned. Device according to claim 16, characterized in that the second sensor (45) at the same time a third drive motor (44) is associated with one around an axis (41) pivotable cover (40) pivots in the open or closed position. Device according to claims 15 and 16 or claim 17, characterized characterized in that the sensors (43, 45) when the cover is arranged Drive motors (5, 20) on the cover (1), otherwise on the frame (15) of the opening are arranged. Device according to one of claims 3 to 17, characterized in that all parts the first assembly is carried by a common base plate (13).

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