EP3805497B1

EP3805497B1 - Door check assembly

Info

Publication number: EP3805497B1
Application number: EP19202429.7A
Authority: EP
Inventors: Manoj Kumar Gupta
Original assignee: Steyr Daimler Puch Fahrzeugtechnik AG and Co KG
Current assignee: Magna Steyr Fahrzeugtechnik GmbH and Co KG
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2022-06-22
Anticipated expiration: 2039-10-10
Also published as: EP3805497A1

Description

TECHNICAL FIELD

The invention relates to a door check assembly for a vehicle door.

BACKGROUND

Door checks, also called check straps, are used for vehicle doors, especially car doors, to allow the vehicle door to stop and to hold it at one or more specified intervals, while opening the door. They are useful for passenger ingress and egress. A conventional door check functions to stop the door at in-between positions as well as at an end position, i.e. at fully open condition.
Door checks are known for example from DE 1 584 202 A1 and DE 199 09 500 A1 .
EP 1 068 416 A1 reveals a motor-vehicle door stop comprising a first part which can be fixed to the one door assembly part, door or door strut and a second part which can be fixed to the other door assembly part, at least one braking and holding body, which is spring-loaded by means of at least one spring, being arranged between the two parts, and one of the two parts being formed by an element which can move relative to the other part and is provided with braking ramps or latching marks which are distributed in accordance with the intended holding positions of the door and interact with the spring-loaded braking and holding bodies, wherein the spring which interacts with a braking and holding body is surface-hardened at least in the region in which it comes into contact with the braking and holding body.
Documents US 6 029 314 A and US 6 282 752 B1 disclose further door check assemblies.

SUMMARY

It is an object of the invention to specify an improved door check assembly which can be used for a vehicle door. In particular, the intention is to specify a reliable and cost-effective door check assembly, which has a compact design.
The object of the invention is achieved by means of a door check assembly for a vehicle door, according to claim 1.
According to the invention a door check uses two disks, i.e. two flat parts, which are designed and arranged in a way, that the two parts can be rotated against each other. Therefore, the first and second disk part are arranged on a common center axis. The two disks are spring loaded in the direction of this common center axis against each other. The first disk comprises indentations and the second disk comprises a pin which, depending on the angle of twist between the two disks, either lies in a recess (indentation) or lies in an elevated area between the recesses. In that way, further pivotal movement of the disks against each other becomes easier or harder, depending on the exact position of the disks in relation to each other, so that also the further pivotal movement of the first door check part in relation to the second door check part and of a vehicle door, connected to the first door check part, in relation to a vehicle body, connected to the second door check part, becomes easier or harder depending on the opening angle of the door. The first disk part is non-rotatably mounted to the body mounting part. According to the invention, the pin is oriented diagonally with respect to the direction of the common center axis and the second door check part contains an elongated link member, wherein a first end of the link member is pivotally connected to the second disk part and the second end of the link member, opposite the first end of the link member, is pivotally connected to the door mounting part.
In this way the functionality of a door check is achieved with simple components that can be fixed to a body and a door of a vehicle and a door check projection into a door cavity, as in some other door check assemblies, is avoided, leading to a compact design of a door check stopper and an improved door packaging.
Some further advantages that can be achieved with such a door check assembly, depending on its exact design, are:
The same parts can be utilized for all doors, also in different derivatives, for example in front driven and rear driven or in left-hand-drive and righthand-drive vehicles. Water tightness issues can be avoided. The cost of a rubber seal or a plastic housing can be saved. A dust protection cover can be provided.
The door check assembly can be very easy to assemble in an assembly line and can be easily serviceable. The solution can be produced in a cost-effective manner.
Force adjustment can be carried out easily according to product requirement, fine-tuning on assembly-line is possible and re-adjustment in service case is also possible.
The realization of several different door stop positions, for example with two stops or with three stops, is possible. A simple change of the disk part which has the indentations can be sufficient to alter the behavior of the door.
Further advantageous embodiments and developments of the invention will become apparent from the dependent claims and from the description when considered together with the figures.
It is advantageous if the door mounting part comprises a flange surface adapted to be mounted to a side surface of the vehicle door.
Preferably the first disk part in the installation position lies above the second disk part.
Preferably the door check assembly comprises a spring to spring-load the two disks against each other. Preferably the spring has the same center axis as the first and second disk part and is positioned, in the installation position, above the first disk part, to spring load the first disk part against the second disk part in the direction of the common center axis.
A vehicle according to the invention comprises a body of the vehicle, a door of the vehicle and a door check assembly as described above. The first door check part is mounted to the body via the body mounting part of the vehicle and the second door check part is mounted to the door via the door mounting part.
Preferably the body mounting part is mounted to the vehicle body using bolts. Preferably the door mounting part is mounted to the vehicle door using bolts.
Preferably the second door check part is mounted to a side surface of the door via the door mounting part.

DRAWINGS

The present invention is explained in greater detail below with reference to the illustrative embodiments given in the schematic figures of the drawing, in which:

Fig. 1 shows different door stop positions for a vehicle with a door check assembly according to the invention;
Fig. 2 shows a three-dimensional view of a door check assembly according to the invention;
Fig. 3 shows a three-dimensional exploded view of the door check assembly of Fig. 2;
Fig. 4 shows a three-dimensional view of the door check assembly of Fig. 2, separated into the first door check part and the second door check part;
Fig. 5 shows a front view of the first door check part of the door check assembly of Fig. 4 (left), and a top view of the first disk part (right, top) and the second disk part (right, bottom);
Fig. 6 shows a three-dimensional view of the first disk part and the second disk part;
Fig. 7 shows a schematic top view of the door check assembly together with a body and a door and shows the working principle of the door check assembly.
Fig. 8 shows a less schematic top view of the door check assembly of Fig. 7.
Fig. 9 a, b, c and d show front, side, top and section view of the door check assembly of Fig. 2;
Fig. 10 a, b and c show different door stop positions for a vehicle with a door check assembly according to the invention, similar to Fig. 1, but focused on the region of the door check assembly.

DESCRIPTION

Fig. 1 shows three different door stop positions (close position A, mid stop position B and open position C) for a vehicle door 30, which is equipped with a door check assembly according to the invention.
The door check link assembly, comprising a first door check part 20 and a second door check part 21, is located between two door hinges 23, as can be seen in more detail in Fig. 10 a, b and c. The door 30 is connected to the body 31 of the vehicle by the door hinges 23 and by the door check assembly 20, 21.
Fig. 2 shows a three-dimensional view of a door check assembly according to the invention. Fig. 3 shows the same door check assembly in an exploded view.
The door check assembly for a vehicle door 30 comprises a first door check part 20 which contains a body mounting part 7 designed for mounting the first door check part 20 to a body 31 of the vehicle and a second door check part 21 which contains a door mounting part 8 designed for mounting the second door check part 21 to the door 30 of the vehicle.
The body mounting part 7 comprises a flange surface which can be mounted to a flat surface of the vehicle body using mounting bolts 10 and also the door mounting part 8 comprises a flange surface adapted to be mounted to a flat side surface of the vehicle door 30 using mounting bolts 10.
The first door check part 20 comprises a first disk part 4 and the second door check part 21 comprises a second disk part 1. The first disk part 4, in the installation position, lies above the second disk part 1.
The first disk part 4 is pivotally connected to the second disk part 1 about a common center axis of the first disk part 4 and second disk part 1.
The first disk part 4 and the second disk part 1 are spring loaded against each other in the direction of the common center axis by a spring 5. The spring 5 has the same center axis as the first and second disk part 4, 1. It is positioned, in the installation position, above the first disk part 4 and spring loads the first disk part 4 against the second disk part 1, in the direction of the common center axis.
The first disk part 4 has indentations 22 as latching marks. More precisely the first disk part 4 has two regions of indentations which face each other.
The second disk part 1 has two rotationally fixed pins 2 which are moved into the indentations 22 during a pivoting movement between the first and second disk part 4, 1 during opening or closing of the vehicle door 30. The pins 2 are oriented diagonally with respect to the direction of the common center axis.
The first disk part 4 is non-rotatably mounted to the body mounting part 20 and the second disk part 1 is rotatably mounted to the body mounting part 20.
The second door check part 21 contains an elongated link member 3. A first end of the link member 3 is pivotally connected to the second disk part 1 by using a locking pin 9 as a rotary axis and the second end of the link member 3, opposite the first end of the link member, is pivotally connected to the door mounting part 8, also by using a locking pin 9 as a rotary axis.
In this solution, the upper sector part or first disk part 4 is driven by the body mounting part 7 and the lower sector part or second disk part 1 is driven by the door mounting part 8.
When the door 30 is set to open, the link member 3 and the second disk part 1 of the second door check part 21 moves with the door 30 and tries to take along the first disk part 4 of the first door check part 20.
As can be seen most clearly in Fig. 6, the rotating pins 2 connect the first and second disk part 4, 1, to reduce friction between these parts 4, 1.
Fig. 6 shows the working function of the upper and lower disk part 4, 1 with different stopping positions.
As the peak of the rotating pin 2 approaches the mating peak 24 of the first disk part 4 it tries to lift the first disk part 4 of the body side first door check part 20. The spring 5 provided above the first disk part 4 acts and constantly gives reaction on the first disk part 4, resulting in resistance to the door movement. This resistance is maximum at the point when the peak of the rotating pin or pins 2 coincides with the peak or peaks 24 of the first disk part 4, preferably at two opposing areas. The resistance starts dropping when the peaks of the pin and the first disk part cross each other and the resistance is zero when said peak of the rotating pin 2 matches the crest or indentation 22 formed between two peaks 24 of the first disk part 4. At this position the door movement is stopped/checked. The same phenomenon can be seen when peak of the rotating pin 2 approaches the next peak 24 of the first disk part 4. After passing over this second peak 24, the door 30 is in the full open condition and remains in this position.
While closing the door 30, it goes through the same cycle but in reverse order to have again the same door check performance.
Fig. 4 shows the body side first door check part 20 separated from the door side second door check part 21, which is mounted in the door 30, by lifting the locking pin 9.
Fig. 5 shows a front view of the first door check part 20 together with the second disk part 1 (left), and a top view of the first disk part 4 (right, top) and of the second disk part 1 (right, bottom). The first disk part 4 (right, top) is depicted with three indentations 22 or stop positions, namely A, where the door is closed, B an intermediate position, and C, a full open position of the door 30. The rotation movements that can be executed by the second disk part 1 when opening or closing the door 30 are depicted as arrows in the drawing at the right bottom.
Fig. 7 shows a schematic top view of the door check assembly together with a body 31 and a door 30 and illustrates the working principle of the door check assembly with three possible stop positions A, B and C of the second door check part 21 and of the the door 30. Fig-7 shows the door check working principle with the rotation axis 25 of the hinges.
Fig. 8 shows the same working principle and door stop positions A, Band C in a less schematic top view of the door check assembly compared to Fig. 7.
Fig. 9 a, b, c and d show a front, side, top and section view X-X of the door check assembly according to the invention as depicted in Fig. 2.
Finally, Fig. 10 a, b and c show the different door stop positions A, B and C for a vehicle with a door check assembly according to the invention, similar to Fig. 1, but focused on the region of the door check assembly and therefore in the region of the first door check part 20 and the second door check part 21, mounted to the body 31 and to the door 30 respectively. The door check assembly is arranged between two door hinges 23, preferably approximately in the middle between the two hinges 23 of the door 30.

LIST OF REFERENCE SIGNS

1: second disk part
2: pin
3: link member
4: first disk part
5: spring
6: locking nut
7: body mounting part
8: door mounting part
9: locking pin
10: mounting bolt
20: first door check part
21: second door check part
22: indentation
23: door hinges
24: peak
25: rotation axis of a hinge
30: door
31: body

A: door closed position
B: door intermediate position
C: door full open position

X-X: section

Claims

Door check assembly for a vehicle door (30), comprising a first door check part (20) which contains a body mounting part (7) designed for mounting the first door check part (20) to a body (31) of the vehicle and a second door check part (21) which contains a door mounting part (8) designed for mounting the second door check part (21) to the door (30) of the vehicle, wherein the first door check part (20) comprises a first disk part (4) and the second door check part (21) comprises a second disk part (1), wherein the first disk part (4) is pivotally connected to the second disk part (1) about a common center axis of the first and second disk part (4, 1), wherein the first disk part (4) and the second disk part (1) are spring loaded against each other in the direction of the common center axis, wherein the first disk part (4) has indentations (22) as latching marks and the second disk part (1) has a rotationally fixed pin (2) which is moved into the indentations (22) during a pivoting movement between the first and second disk part (4, 1) during opening or closing of the vehicle door (30), wherein the first disk part (4) is non-rotatably mounted to the body mounting part (20),
characterized in that
the pin (2) is oriented diagonally with respect to the direction of the common center axis, wherein the second door check part (21) contains an elongated link member (3), wherein a first end of the link member (3) is pivotally connected to the second disk part (1) and the second end of the link member (3), opposite the first end of the link member, is pivotally connected to the door mounting part (8).
Door check assembly according to claim 1,
characterized in that the door mounting part (8) comprises a flange surface adapted to be mounted to a side surface of the vehicle door (30).
Door check assembly according to any of the preceding claims,
characterized in that the first disk part (4) in the installation position lies above the second disk part (1).
Door check assembly according to claim 3,
characterized in that a spring (5), which has the same center axis as the first and second disk part (4, 1), is positioned in the installation position above the first disk part (4), to spring load the first disk part (4) against the second disk part (1) in the direction of the common center axis.
Vehicle comprising a body (31) of the vehicle, a door (30) of the vehicle and a door check assembly according to any of the preceding claims,
characterized in that the first door check part (20) is mounted to the body (31) via the body mounting part (7) and the second door check part (21) is mounted to the door (30) via the door mounting part (8), wherein the second door check part (21) is mounted to a side surface of the door (30) via the door mounting part (8).