WO2011101088A1

WO2011101088A1 - Hinge for a flap of a car body

Info

Publication number: WO2011101088A1
Application number: PCT/EP2011/000453
Authority: WO
Inventors: Rüdiger Röhrl
Original assignee: Daimler Ag
Priority date: 2010-02-19
Filing date: 2011-02-01
Publication date: 2011-08-25
Also published as: EP2536910A1; EP2536910B1; DE102010008712A1

Abstract

The invention relates to a hinge for a flap, a cover, a door, a leaf or the like of a car body, having a flap-side hinge part (10) and having a body-side hinge part (12) which are connected to one another in an articulated manner, and having a stop device (50) with interacting stop elements (52, 56) which come into operative contact with one another in an end position of the hinge in order to limit a mutual displacement of the hinge parts (10, 12), wherein the two stop elements (52, 56) of the stop device (50) each have at least one braking surface (62-68), with the result that the movable stop element (52) can be frictionally fastened by means of the fixed stop element (56) in the end position of the hinge.

Description

Hinge for a flap of a body of a motor vehicle

The invention relates to a hinge for a flap, a lid, a door, a wing or the like of a body of a motor vehicle in the preamble of

Patent claim 1 specified type.

From the series production of passenger cars, a variety of flaps, covers, doors or wings are known to remove, which are hinged on the pipe construction of the vehicle. Among others, such hinges are known for tailgates, with two hinges are usually provided, each one

flap-side hinge part and a body-side hinge part include, which are hinged together.

To achieve, for example, when opening the flap, the lid, the door or the wing, a limitation of the opening pivoting movement, include such

Hinges usually a stopper with cooperating

Stop elements, which come into operative contact with each other for limiting a mutual displacement of the hinge parts. Usually, these stop elements comprise respective buffer elements, which abut against each other and in particular limit the opening pivoting movement of the hinge.

However, a problem with such stop elements is the fact that they are on the one hand yielding designed to dampen the attack.

On the other hand, this resilient compliance, however, causes the flap, the lid, the door or wing after reaching the end position by the cooperating stop elements may be moved back slightly, which may be surprising for the operator.

Object of the present invention is therefore to provide a hinge of the type mentioned, by means of which an improved, in particular safer Shifting the flap, lid, door or wing into a respective one

End position can be realized.

This object is achieved by a hinge with the features of claim 1. Advantageous embodiments with expedient and non-trivial developments of the invention are specified in the remaining claims.

In order to create a hinge by means of which a particularly good, in particular secure, opening of the flap, the lid, the door or the wing can be realized, according to the invention the two stop elements of the stop device each have at least one braking surface, wherein the movable stop element by means of fixed stop element in the end position of the hinge is frictionally fixed. In other words, it is inventively provided to provide mutually cooperating stop elements, each comprising a braking surface, so that by a cooperation of the braking surfaces a self-locking or automatic mutual fixing of the stop elements can be achieved in the end position of the hinge. Thus, for example, if the flap, the cover, the door or the wing from a closed position in an open position and thus brought the hinge in one of its two end positions, so it is determined by the fixed stop member frictionally fixed by the movable stopper opening element. In contrast to the prior art, in which it could come after reaching the operative contact of the two stop elements to a spring back of the flap, the lid, the door or the wing, this invention is no longer possible. Rather, the at least two corresponding braking surfaces of the two stop elements ensure that the two hinge parts remain frictionally or self-restrained in place in the end position of the hinge. Spring-back of the flap, the lid, the door or the wing after reaching the end position is thus effectively avoided.

This has the particular advantage that an operator when opening the flap, the lid, the door or the wing can reliably assume that no

Springback occurs or even that the operator is hit on the head.

In a further embodiment of the invention, it has been found to be advantageous if the hinge comprises a torsion spring drive with at least one torsion spring, by means of which the flap-side hinge part relative to the body-side hinge part is pivotable. Such a torsion spring drive is just like the stopper particularly space-saving design.

A further preferred embodiment provides that the movable

Stop element is arranged on a pivot arm of the torsion spring drive. This results in the one hand, a particularly favorable frictionally locking the hinge in said end position and on the other hand, a particularly space-saving arrangement.

In a further embodiment of the invention, the respective mutually corresponding braking surfaces of the two stop elements are inclined relative to the direction of movement of the movable stop element. This has the advantage that influences due to production-related tolerances or due to the thermal expansion can be compensated particularly favorable. In addition, there is a particularly favorable

frictional mutual fixing of the two stop elements by choosing appropriate angles of inclination.

A further preferred embodiment provides that each of the two

Stop elements each having two braking surfaces. As a result, a particularly effective stop device can be achieved.

If the respective braking surface of the at least one, in particular movable, stop element comprises at least two braking surface regions which are differently inclined with respect to the direction of movement of the movable stop element, this has the advantage that the frictional forces during the mutual deceleration of the

Stop elements can be controlled specifically.

A particularly cost-effective and highly effective embodiment of the stop device provides that at least the two stop elements comprises a reversibly compliant material, in particular a plastic material. This results in a damped frictional connection of the stop elements when the hinge reaches the corresponding end position.

A further preferred embodiment provides that one of the two

Stop elements - and preferably the movable stop element - as

Wedge element is formed with two braking surfaces, which cooperates with a further, in particular fixed stop element, which two

has corresponding braking surfaces and in particular U-shaped. By Such a wedge mount, which can accommodate the wedge element, is a particularly reliable and accurate stop device to create.

It has further been found to be advantageous if the wedge mount has an inlet radius, an inlet slope or the like for the wedge element.

Finally, it has proven to be advantageous if a foot region of the one, in particular fixed, stop element comprises an absorption surface. Thus, upon reaching the foot area, a correspondingly absorbing damping of

Relative movement of the two stop elements can be achieved.

Further advantages, features and details of the invention will become apparent from the following description of a preferred embodiment and from the drawings; these show in:

1 is a perspective view of the hinged hinge for a tailgate of a coupe or convertible passenger car with a flap side and a body-side hinge part, which are hinged together, wherein the mutual pivoting of the hinge parts by means of a torsion spring drive with a torsion spring, which is fixed on the side of the body-side hinge part;

2 shows a further perspective view of the hinge according to FIG. 1 from a front viewing direction, wherein in the region of a swivel arm of the torsion spring drive an abutment device with two interacting stop elements can be seen, which is used to limit one

Opening pivotal movement or a displacement of the flap-side hinge member relative to the body-side hinge member come into operative contact with each other in an end position of the hinge, the two stop elements each having two corresponding braking surfaces, wherein the movable stop member is frictionally fixed by means of the fixed stop member in the end position of the hinge;

3 shows a perspective view of the hinge according to FIG. 2 in the other end position of the hinge with the tailgate closed; 4 is a fragmentary perspective view of the stop device with the stop elements, which in the present case are in frictional operative contact with one another in the end position of the hinge when the tailgate is open; and in

Fig. 5 is a perspective view of the stop device of FIG. 4, wherein

In the present case, the two stop elements of the stop device are shown in the other end position of the hinge with the tailgate closed, in which the two stop elements are not in frictional operative contact with each other.

As can be seen from FIGS. 1 to 3, a hinge which in the present case is designed for a tailgate of a coupe or convertible vehicle comprises

rear flap-side hinge part 10 and a body-side hinge part 12, which are hinged together in the region of a single hinge axis S. In other words, the present hinge is a single-joint hinge, and in the context of the invention it should be considered to include that, if appropriate, a multi-joint hinge could also be used. The present

However, single-pivot hinge has the advantage of being extremely space-saving. Figures 1 and 2 show the hinge in an end position with the tailgate fully open. Fig. 3 shows the hinge in the other end position in geschossener Heckklape.

The flap-side hinge part 10 comprises, starting from the hinge axis S, a first lever region 16 and a second lever region 18, which are arranged at an angle to one another in the region of a crank 14. At the end of the lever portion 18, a mounting bracket 20 for the tailgate, not shown, of the body of the passenger car can be seen.

In the present case, the body-side hinge part 12 comprises two bearing angles 22, 24, which each comprise a fastening leg 26, 28 and a respective bearing leg 30, 32. The two bearing legs 30, 32 extend approximately perpendicular relative to the mounting legs 26, 28 and at a distance approximately plane-parallel to each other. In this distance between the two bearing legs 30, 32, the flap-side hinge part 10 in particular with its lever portion 16 and the crank 14 dip. The flap-side hinge part 10 is therefore supported on the left and right of a respective bearing leg 30, 32 of the body-side hinge part 12.

Both the body-side hinge part 10 as well as the flap-side hinge part 12 include respective bores 34, 36, via which the tailgate can be fastened or via which the hinge together with the tailgate on the

Vehicle body is fastened.

On the mounting leg 26 of a bearing bracket 22 of the body-side hinge part 10, a torsion spring drive 38 is fixed with a torsion spring 40. For this purpose, the torsion spring 40 is mounted in a bearing block 42. The torsion spring 40, which is provided here from an approximately rectangular metal band, has a first end 44 which is supported on the bearing block 42. Another, unrecognizable end of the torsion spring 40 is connected to a pivot arm 46, which in turn about a bearing axis L is rotatably supported on the bearing block 42.

At its end remote from the bearing axis L, the swivel arm 46 has a joint with a hinge axis G, via which the swivel arm 46 is pivotally connected to a drive arm 48. The drive arm 48 in turn is hinged on the side facing away from the hinge axis G with the lever portion 18 of the flap-side hinge part 10 in the region of another axis A. It is thus apparent that the torsion spring drive 38 with the hinge a multi-joint present in the form of a

Four-joint forms, which includes the axes S, L, G, A. As a result, this multi-joint results in a pivoting moment acting between the flap-side hinge part 10 and the body-side hinge part 12, when the pivoting moment

Swivel arm 46 of the torsion spring drive 38 rotates accordingly. In the present case, the torsion spring 40 is designed so that it is biased by a spring force when the tailgate is closed or the flap-side hinge part 10 is closed in the direction of the body-side hinge part 12. Conversely, the rotational spring force generated by the bias of the torsion spring 40 is used in opening the hinge in the open position shown here, to support the opening pivoting movement and consequently to increase the comfort of the operator. The spring force of the torsion spring 40 then initiates a corresponding rotational movement of the pivot arm 40, which in turn the pivoting of the flap-side hinge part 10 relative to the body-side hinge part 12 acts, through the mediation of the

Multi-jointed S, L, G, A.

As can be seen first of all in particular from FIGS. 2 and 3, the hinge also comprises an abutment device 50, by means of which the mutual displacement of the hinge parts 10, 12 in an end position of the hinge is to be limited in a manner which will be described in more detail below. More specifically, the mutual displacement of the hinge parts 10, 12 to limit such that the tailgate in its open end position - as it corresponds to the representation of the hinge of FIG. 2 - is determined by the stopper 50.

For this purpose, the stop device 50 comprises a stop element 52, which is arranged on a further lever arm 54 of the pivot arm 46.

This stop element 52 cooperates with a further stop element 56, which is stationary on the body-side hinge lever 12 on the

Mounting leg 26 rests.

The concrete configuration of the two stop elements 52, 56 of the stop device 50 can be seen in particular from FIGS. 4 and 5, which each show a fragmentary perspective view of the stop device 50.

FIG. 4 shows that position of the movable stop element 52 on the side of the pivot arm 46, in which this is the corresponding one with the corresponding

Stop element 56 is in effective manner described in more detail below. Thus, in that position, the stop elements 52, 56 that end position of the hinge shown in which the tailgate is fully open.

In contrast, Fig. 5 shows the position of the movable stop member 52 with the tailgate closed or in the opposite Fig. 4 end position of the hinge, in which the two stop members 52, 56 are not engaged with each other.

Accordingly, when the tailgate is opened, the tailgate-side hinge part 10 is pivoted, supported by the spring force of the torsion-spring drive 38, so that pivoting of the pivotal arm 46 with the lever arm 54 about the bearing axis L ensues movable stop element 52 with the body-mounted stop element 56 in

Active contact.

As can be seen in particular from FIGS. 4 and 5, the movable is

Stop element 52 in the present case designed as a wedge element, which in each case has a braking surface 62, 64 at its parallel to a direction of movement of the stop element 52 extending broad sides 58, 60. These braking surfaces 62, 64 of the movable stop element 52 cooperate with corresponding braking surfaces 66, 68 of the body-mounted stop element 56, which is designed as a substantially U-shaped wedge mount.

As can be seen in particular from Fig. 5, the braking surfaces 62, 64 of the movable stop member 52 are inclined relative to the direction of movement. More specifically, each of the two braking surfaces 62, 64 includes two braking surface regions 70, 72 which are opposite to the direction of movement of the movable stop element 52

are differently inclined. In this case, the braking surface region 70, which respectively first dips into the wedge receptacle or the corresponding stop element 56, has a smaller angle of inclination to the direction of movement or to the vertical than the subsequently immersed braking surface region 72. However, this is considerably shorter than the first braking surface region 70.

The corresponding braking surfaces 66, 68 of the body-mounted stop element 70 are connected to the braking surfaces 62, 64, and in particular to the respective

Braking surface areas 70 adapted. In particular, the braking surfaces 66, 68 are spaced apart from each other such that a frictional operative contact results when the stop element 52 designed as a wedge element dips into the stop element 56 according to FIG. 4.

The two stop elements 52, 56 in the present case consist of a plastic material. In particular, the body-side stop member 56 may be formed from a reversible resilient material to a good recording and frictional

To ensure connection with the stop element 52. In particular, production-related tolerances and thermal expansions in the entire hinge can be taken into account by this reversible compliance.

As can further be seen from FIGS. 4 and 5, the body-side has

Stop element - the wedge holder - an inlet radius 74, an inlet slope or The like for the wedge element formed as a stop element 52, so that this is taken in its movement in the wedge mount or the stop element 56 into fit.

A foot region 76 of the body-side stop element is present

optionally designed as an absorption surface made of another material to absorb any resulting kinetic energy of the stop element 52. Thus, if the stop element 52 strikes the abutment element 56 at a considerable speed, for example as a result of a strong opening pivot movement, surplus energy can optionally be absorbed by the foot region 76 if the movement of the abutment element 52 can not be stopped in time by means of the corresponding brake surfaces 62 to 68 ,

Overall, it can be seen from the figures that presently a stop device is provided, by means of which it is ensured that the hinge parts 10, 12 in a mutual end position - in this case the maximum opening position of the tailgate - are mutually fixed. This is done by the fact that the two stop elements 52, 56 frictionally come into operative contact via the braking surfaces 62 to 68 and thus are set against each other. A spring-back of the tailgate, due to the stop elements 52, 56, is thus not possible. Rather, the two worry

Stop elements 52, 56 ensure that they remain frictionally engaged with each other in operative contact. As a result, the two hinge parts 10, 12 remain fixed in their mutual position. After reaching the end position thus remains the tailgate, for example, in its open position, without this springs back by a certain way.

By the suitable choice of the angle of inclination of the respective braking surface regions 70, 72, in particular the frictional force or the frictional connection with which the movable stop element 52 enters and is held in the body-fixed stop element 56 is determined. In the present configuration, in which the braking surface regions 70 have a smaller angle of inclination, the stop element 52 initially runs with a slightly higher speed into the stop element 56 when opening the

Tailgate before, in the further course - due to the more inclined

Brake surface areas 72 - an increased deceleration of the movable

Stop element 52 within the body-mounted stop element 56th

if appropriate. Should this deceleration not be sufficient, the remaining energy can also be absorbed by means of the foot region 76. It is clear that instead of the foot portion 76 on the side of the body-mounted stop member 76th Also, a corresponding element may be provided on the side of the movable stop member 52.

By the present brake shoe stop thus the energy of the tailgate is braked and this remains, without spring back, stand in its open end position. The stopper 50 absorbs a lot of energy in a small space and can be used in many ways. The stop element 52 designed as a wedge element preferably runs with a defined oversize and a defined wedging in the stop element 56 designed as a brake shoe or wedge-shaped receptacle. Thus, the tailgate is gently braked and runs accordingly soft in the open position.

Claims

claims

Hinge for a flap, a lid, a door, a wing or the like. A body of a motor vehicle with a flap-side hinge part (10) and with a body-side hinge part (12) which are hinged together, and with a stop means (50) acting together

Stop elements (52, 56), which limit each other

Displacement of the hinge parts (10, 12) come into operative contact with each other in an end position of the hinge

characterized in that

the two stop elements (52, 56) of the stop device (50) each have at least one braking surface (62-68), whereby the movable

Stop element (52) by means of the fixed stop element (56) in the end position of the hinge is frictionally fixed.

Hinge according to claim 1,

characterized in that

a torsion spring drive (38) with at least one torsion spring (40) is provided, by means of which the flap-side hinge part (10) relative to the

Body-side hinge part (12) is pivotable.

Hinge according to claim 2,

characterized in that

the movable stop element (52) on a pivot arm (46) of the

Torsion spring drive (38) is arranged.

4. Hinge according to one of the preceding claims,

characterized in that

the respective mutually Korrespondierenden braking surfaces (62-68) of the two stop elements (52, 56) relative to the direction of movement of the movable stop member (52) are inclined.

5. Hinge according to one of the preceding claims,

characterized in that

each of the two stop elements (52, 56) each having two braking surfaces (62-68).

6. Hinge according to claim 4 or 5,

characterized in that

the respective braking surface (62, 64) in particular of the movable

Stop element (52) has at least two braking surface regions (70, 72) which are inclined differently with respect to the direction of movement of the movable stop element (52).

7. Hinge according to one of the preceding claims,

characterized in that

at least one of the two stop elements (52, 56) of the stop device (50) comprises a reversibly compliant material, in particular a plastic material.

8. Hinge according to one of the preceding claims,

characterized in that

one of the two stop elements (52) as a wedge element with two braking surfaces (62, 64) and the other stop element (56) as two corresponding

Brake surfaces (66, 68) having, in particular U-shaped wedge mount is formed.

9. Hinge according to claim 8,

characterized in that

the wedge receptacle (56) has an inlet radius (74), an inlet slope or the like for the wedge element (52).

10. Hinge according to one of the preceding claims, characterized in that

a foot region (76) of the one stop element (56) comprises an absorption surface.