DE202007007764U1 - Motor vehicle door assembly - Google Patents

Abstract

Motor vehicle door assembly with a motor vehicle door (1), which has a Türachse (4) on a motor vehicle body (5) pivotally hinged and in an open position and in a closed position is adjustable, with a door lock (6) with the vehicle door (1) on the one hand and the motor vehicle body (5) coupled on the other is, wherein the door lock (6) a locking mechanism (7) for generating a locking force or a parking torque and a coupling mechanism (8), wherein the locking force or the locking torque on the coupling mechanism (8) on the motor vehicle door (1) acting door locking torque generated so that the motor vehicle door (1) by means of the door arrester (6) in the pivoted position lockable is, characterized in that the mechanical translation the coupling mechanism (8) with the adjustment of the motor vehicle door (1) changed to the closed position so that at imputed constant locking force or under assumed constant Locking torque the resulting door locking torque in one of the closed position immediately upstream adjustment - freewheeling - to a freewheeling share of at least 50% decreases.

Description

The The present invention relates to a motor vehicle door assembly according to the preamble of claim 1.

The in question standing vehicle door assembly is with a Vehicle door equipped with a door hinged pivotally on a motor vehicle body and in a Open position and is adjustable in a closed position. The term "motor vehicle door" is to be understood comprehensively. It includes both side doors and rear doors, Tailgates, bootlid, engine compartment doors or cargo compartment doors.

Around the vehicle door of a motor vehicle door assembly in a pivoted position always in a defined state hold the motor vehicle door is usually a so-called Door arrester assigned. In modern motor vehicles ensures the door arrester the determination the vehicle door in largely arbitrary positions.

The known motor vehicle door arrangement ( DE 91 01 203 U1 ), from which the invention proceeds, shows a motor vehicle door assembly in question, wherein a door lock is provided, which is coupled to the motor vehicle door on the one hand and the motor vehicle body on the other. The door lock has a locking mechanism with the basic structure of a drum brake. However, the brake shoes are designed here as a pendulum body that trigger the respective braking process automatically. By the locking mechanism, a parking torque can be generated, which generates via a coupling mechanism acting on the vehicle door Türfeststellmoment. Of course, the door locking torque is only effective if the vehicle door is to be manually moved out of the respective pivoted position.

at the known motor vehicle door assembly is the coupling mechanism designed as a pinion rack and pinion gear, wherein the pinion drive technology coupled with the locking mechanism. The locking mechanism is together with the pinion in a cavity of the vehicle door arranged. The rack is articulated pivoted on the body side, at a location spaced from the door axis.

at the known motor vehicle door assembly is indeed on relative simple way of establishing the motor vehicle door in guaranteed in any pivoted position. Indeed has been shown that the door arrester in the the closed position immediately upstream adjustment rather disabling. This is because of the closed position immediately upstream adjustment range is needed, to slam the door with a certain swing, what is inhibited by the door arrester. This is often seen as a loss of comfort.

Of the Invention is based on the problem, the known motor vehicle door assembly such and further develop that the ease of use is increased.

Essential First, the consideration is the effect of the door arrester with the adjustment of the motor vehicle door in the closed position in said closed position immediately preceding the adjustment range, hereinafter referred to as freewheeling range to reduce. This means in detail that the effect of Door arrester during the passage of the freewheel area accordingly reduced.

It has been recognized that the above reduction by achieve a suitable design of the kinematics of the coupling mechanism leaves. It is intended that the mechanical translation of the coupling mechanism with the adjustment the vehicle door in the closed position so changed that assuming constant locking force or assuming a constant locking torque the resulting Door locking torque in the freewheel area by a freewheeling share of at least 50%.

there is it the task of the coupling mechanism to the locking force generated by the locking mechanism or the of the locking mechanism generated parking torque on the vehicle door or to transfer to the vehicle body.

Especially advantageous is the fact that the effect of Door arrester in the freewheel area in the desired Reduce manner without additional constructive measures must be taken. For example, clutches or the like can be dispensed with.

Further it is advantageous that during an adjustment of the vehicle door from the open position in the direction of the closed position the above change of translation usually steady and not noticeable to the user is. Abrupt mechanical loads that are always elevated Wear does not occur.

at suitable design, in particular with a suitable choice of the freewheeling area on the one hand and the freewheel share on the other the motor vehicle door largely without obstruction by the Slam door lock easily. At the same time it is possible, the door in the other adjustment range by means of the door arrester.

at the preferred embodiment according to claim 7 is the coupling mechanism with a power transmission element equipped, the body-side or door-side at one end is articulated. In this embodiment, the on the locking force or the locking torque returning door locking force and thus the door locking torque by means of the force transmission element introduced into the vehicle door.

In order to the means of the power transmission element in the motor vehicle door initiated door locking force also a door locking torque can produce, it is provided that when the vehicle door swung the force action line of the door locking force at a distance passes the door.

Around now the effect of the door arrester on the adjustment to reduce the vehicle door in the above manner, is it is preferably provided according to claim 9 that the force action line of the door locking force at a Adjustment of the motor vehicle door in the closed position approaching the door axis, at least in the freewheel area. According to claim 10, it is even provided that the Force action line of the door locking force in the closed position located motor vehicle door essentially through the door axis runs so that the Türfeststel ler no noticeable Effect on the adjustment of the motor vehicle door more comes.

The above proposed arrangement with power transmission element can be according to claim 11th realize in a simple way with a rack and pinion gear, wherein the pinion drivingly coupled with the locking mechanism is.

in the The following is the invention with reference to an embodiment only illustrative drawing explained in more detail. In the Drawing shows

1 in a side view of a motor vehicle with a proposed motor vehicle door assembly and

2 the motor vehicle according to 1 in a sectional view along the section line II-II in the closed position (above) and in the open position (below) befindlicher motor vehicle door.

This in 1 shown motor vehicle is with a motor vehicle door assembly with four side doors 1 , an engine compartment flap 2 and a trunk lid 3 fitted. At the side doors 1 , the engine compartment door 2 and the trunk lid 3 each of the present understanding is a motor vehicle door. In the present is representative of all types of motor vehicle doors as a side door 1 designed motor vehicle door described.

The illustrated motor vehicle door 1 is over a door axis 4 on the vehicle body 5 pivotally hinged and adjustable in an open position and in a closed position.

It is also one of the motor vehicle door 1 associated door arrester 6 provided with the motor vehicle door 1 on the one hand and the motor vehicle body 5 on the other hand is coupled.

The door arrester 6 has a locking mechanism 7 for generating a locking force or a locking torque and a coupling mechanism 8th on, wherein the locking force or the locking torque on the coupling mechanism 8th one on the motor vehicle door 1 acting door locking torque generated so that the vehicle door 1 by means of the door arrester 6 can be determined in a pivoted position.

In the illustrated preferred embodiment, it is in the coupling mechanism 8th to a pinion-rack transmission, which is explained in more detail below.

It is essential now that the mechanical translation of the coupling mechanism 8th with the adjustment of the vehicle door 1 changed in the closed position so that, assuming constant locking force or unterstelltem constant locking torque, the resulting Türfeststellmoment in a closed position immediately upstream adjustment - freewheeling - by a freewheeling share of at least 50% decreases. This can be achieved that the disturbing effect of the door arrester 6 in freewheeling as explained in the general part of the description is reduced.

Of the Freewheel share can also be set higher, so that the disturbing effect of the door arrester further reduced. In a preferred embodiment the freewheeling share 70%, preferably even 80%, in a particularly preferred embodiment 95%. It is also conceivable that the freewheeling share more than 95%. It should be noted that the above described decrease of the door locking torque Running through the freewheeling area takes place. With the above definition of freewheeling and freewheeling share is meant that in Course of going through the freewheel area - somehow - one Lowering of the above door locking torque by the freewheeling share he follows.

In a further preferred embodiment, it is provided that with the adjustment of the vehicle door 1 in the closed position, the mechanical translation of the coupling mechanism 8th changed so that, assuming constant locking force or unterstelltem constant locking torque the resul tating door locking torque drops in the freewheel area and is negligible when reaching the closed position. This means that upon reaching the closed position, the inhibitory effect of the door arrester 6 for the user in view of already existing friction and inertial forces is not felt.

Depending on the behavior of the mechanical translation of the coupling mechanism in the adjustment of the vehicle door 1 in the closed position, the lowering of the door locking torque occurs in the freewheel area in different ways. It is conceivable a sinusoidal course of the Türfeststellmoments, in the in 2 illustrated embodiment occurs. However, a course approximated to a rectangular function is also conceivable, whereby a continuous transition will always be provided.

In Particularly preferred embodiment covers the freewheel area between about 30% and about 50% of the pivoting range of the motor vehicle door. This corresponds to a Gesamtverstellwinkel the vehicle door of about 75 ° an angular range between about 22.5 ° and about 37.5 °. It has been found that an arrangement, in the freewheeling area about 40% of the pivoting range of the vehicle door covers, for the ease of use particularly advantageous is. This corresponds to a Gesamtverstellwinkel of about 75 ° one Swing angle of about 30 °.

For the realization of the door arrester 6 are numerous advantageous variants conceivable. Some of these variants are described below starting from the in 2 discussed variant discussed.

At the in 2 illustrated and so far preferred embodiment is the locking mechanism 7 at the motor vehicle door 1 arranged. It is also conceivable, however, an arrangement of the locking mechanism 7 on the vehicle body 5 ,

Also for the coupling of the door arrester 6 with the vehicle door 1 on the one hand and the motor vehicle body 5 On the other hand, depending on the application, different variants are advantageous. In the illustrated embodiment, the coupling mechanism 8th of the door arrester 6 over a body-side, from the Türachse 4 spaced arrester axis 9 with the vehicle body 5 coupled. Here is the locking mechanism 7 , preferably via a housing, on the motor vehicle door 1 attached. Depending on the structural design, this may also be a swivel attachment.

Other variants for coupling the door arrester 6 are possible. Overall, it is preferably so that the door lock 6 , in particular the coupling mechanism 8th of the door arrester 6 , over a body-side, from the Türachse 4 spaced arrester axis 9 with the vehicle body and / or on the door side, of the door axis 4 spaced arrester axle is coupled to the motor vehicle door.

In the illustrated and so far preferred embodiment, the coupling mechanism 8th a power transmission element 10 on, with the one on the locking force or the parking torque going back door locking force and thus the door locking torque in the vehicle door 1 can be introduced.

In a particularly preferred embodiment, it is such that the force transmission element 10 at one end 10a over the body side, from the Türachse 4 spaced arrester axis 9 with the vehicle body 5 is coupled. On the other hand, it can also be provided that the force transmission element 10 at one end 10a on the door side, from the door axis 4 spaced arrester axis 9 with the vehicle door 1 coupled, namely, when the locking mechanism 7 on the vehicle body 5 is arranged.

In all described embodiments, it is preferably such that the body-side lock actuator axis 9 and / or the optionally existing, door-side locking axle substantially parallel to the door axis 4 is aligned or are.

If the door locking force and thus the door locking torque by means of a power transmission element 10 in the vehicle door 1 is initiated, it is preferably such that the force line of action 11 the door locking force at an adjustment of the vehicle door 1 in the closed position at least in the freewheel area to the door axis 4 approaches. This can be a synopsis of in 2 Above and below illustrated states of the vehicle door 1 remove. This reduces the lever arm of the door locking force relative to the door axis 4 , which leads to an above reduction in the door locking torque assuming a constant locking force or assuming a constant locking torque.

In a particularly preferred embodiment, it is provided that the force of action line 11 the door locking force when in the closed position located motor vehicle door 1 essentially through the door axis 4 runs. This is in 1 shown above. By "substantially" is meant here that the force line of action 11 not exactly through the door 4 must go. Rather, it is important that the approximation of the force line of action 11 to the door 4 when reaching the closed position so far away Stepped is that the effect of the door arrester 6 is negligible and therefore no longer noticeable by the user. It is of course assumed that the amount of Türfeststellkraft moves in a normal range and can not go against "infinity".

Specifically, it is at the in 2 illustrated and insofar preferred embodiment provided that the force transmission element 10 designed as a rack that the rack 10 permanently with a pinion 12 combs and that the pinion 12 with the locking mechanism 7 is coupled drive technology. For the design of the locking mechanism 7 Many possibilities are conceivable. For example, here in the DE 91 01 203 U1 Brake principle used find application. The locking mechanism 7 but can also have a simple friction brake.

It is essential that here of the locking mechanism 7 one on the pinion 12 acting locking torque is generated, which over the rack 10 one in the vehicle door 1 einleitbare door locking force generated. The door locking force finally generates the above-mentioned door locking torque.

It is the representation in 2 above, that the force line of action 11 the door locking force when in the closed position located motor vehicle door 1 essentially through the door axis 4 runs. This is realized in that the force application point of the pinion 12 at the rack 10 , the locking axle 9 and the door axis 4 essentially in line. What is meant here by "essentially" has been referred to earlier in the context of the "essentially" through the door axis 4 extending force line of action 11 explained.

In another preferred variant, the power transmission element 10 designed as a spindle, wherein the spindle is in engagement with a spindle nut and wherein the spindle nut is drivingly coupled to the locking mechanism.

Also conceivable is a variant in which the coupling mechanism 8th a multi-joint kinematics, preferably a four-joint kinematics, or a plurality of cascaded kinematics. This makes it possible to realize an optimal course of the door locking torque in the freewheeling area.

Finally, it should be noted that the door arrester 6 Part of a door drive can be. For example, it is conceivable that the drive motor of the door drive additionally the function of the locking mechanism 7 takes over. Then the self-locking of the drive motor could serve to generate the parking torque. It is also conceivable that the drive motor is not designed to be self-locking and on the motor shaft, a brake disc o. The like. Is arranged. In the illustrated embodiment, the pinion could 12 drivably coupled to the drive motor. The combination of the function of the door arrester 6 Overall, the function of a door drive leads to a particularly compact arrangement.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 9101203 U1 [0004, 0040]

Claims (13)

Motor vehicle door arrangement with a motor vehicle door ( 1 ) passing over a door axis ( 4 ) on a motor vehicle body ( 5 ) pivotally hinged and adjustable in an open position and in a closed position, wherein a door arrester ( 6 ) with the motor vehicle door ( 1 ) on the one hand and the motor vehicle body ( 5 ) is coupled on the other hand, wherein the door arrester ( 6 ) a locking mechanism ( 7 ) for generating a locking force or a locking torque and a coupling mechanism ( 8th ), wherein the locking force or the locking torque via the coupling mechanism ( 8th ) on the motor vehicle door ( 1 ) acting door locking torque generated so that the motor vehicle door ( 1 ) by means of the door arrester ( 6 ) is detectable in the pivoted position, characterized in that the mechanical translation of the coupling mechanism ( 8th ) with the adjustment of the motor vehicle door ( 1 ) in the closed position so that, assuming constant locking force or unterstelltem constant locking torque, the resulting Türfeststellmoment in a closed position immediately upstream adjustment - freewheeling - by a freewheeling share of at least 50% decreases. Motor vehicle door assembly according to claim 1, characterized in that the freewheeling portion 70%, preferably 80%, more preferably 95%, more preferably more than 95%, is. Motor vehicle door arrangement according to claim 1 or 2, characterized in that with the adjustment of the motor vehicle door ( 1 ) in the closed position, the mechanical translation of the coupling mechanism ( 8th ) changed so that, assuming constant locking force or unterstelltem constant locking torque, the resulting Türfeststelloment drops in the freewheel area and is negligible when reaching the closed position. Motor vehicle door assembly according to one of the preceding claims, characterized in that the freewheeling range between about 30% and about 50%, preferably about 40%, of the pivoting range of the motor vehicle door ( 1 ) covers. Motor vehicle door arrangement according to one of the preceding claims, characterized in that the locking mechanism ( 7 ) of the door arrester ( 6 ) on the motor vehicle door ( 1 ) or on the vehicle body ( 5 ) is arranged. Motor vehicle door arrangement according to one of the preceding claims, characterized in that the door arrester ( 6 ), in particular the coupling mechanism ( 8th ) of the door arrester ( 6 ), via a body-side, from the door axis ( 4 ) spaced locking axle ( 9 ) with the vehicle body ( 5 ) and / or on the door side, from the door axis ( 4 ) spaced arrester axle with the vehicle door ( 1 ) is coupled. Motor vehicle door arrangement according to one of the preceding claims, characterized in that the coupling mechanism ( 8th ) a power transmission element ( 10 ), with which a on the locking force or the parking torque going back door locking force and thus the door locking torque in the vehicle door ( 1 ) can be introduced. Motor vehicle door arrangement according to Claim 7, characterized in that the force transmission element ( 10 ) at one end ( 10a ) over a body-side, from the door axis ( 4 ) spaced locking axle ( 9 ) with the vehicle body ( 5 ) or on the door side, from the door axis ( 4 ) spaced arrester axle with the vehicle door ( 1 ), preferably that the body-side locking axle ( 9 ) and / or the door-side arrester axis substantially parallel to the door axis ( 4 ) is or are aligned. Motor vehicle door arrangement according to claim 7 or 8, characterized in that the force action line ( 11 ) of the door locking force during an adjustment of the motor vehicle door ( 1 ) in the closed position at least in the freewheel area to the door axis ( 4 ) approximates. Motor vehicle door arrangement according to one of Claims 7 to 9, characterized in that the force action line ( 11 ) of the door locking force when the vehicle door is in the closed position ( 1 ) essentially through the door axis ( 4 ) runs. Motor vehicle door arrangement according to one of Claims 7 to 10, characterized in that the force transmission element ( 10 ) as a rack ( 10 ) is designed such that the rack ( 10 ) permanently with a pinion ( 12 ) and that the pinion ( 12 ) with the locking mechanism ( 7 ) is coupled drive technology. Motor vehicle door arrangement according to one of Claims 7 to 11, characterized in that the force transmission element ( 10 ) is designed as a spindle, that the spindle is in engagement with a spindle nut and that the spindle nut with the locking mechanism ( 7 ) is coupled drive technology. Motor vehicle door arrangement according to one of the preceding claims, characterized in that the coupling mechanism ( 8th ) has a multi-joint kinematics, preferably a four-joint kinematics.