EP2176482A1

EP2176482A1 - Door hinge with arrester for motor vehicles

Info

Publication number: EP2176482A1
Application number: EP08801551A
Authority: EP
Inventors: Gerhard Reuber
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-09
Filing date: 2008-08-08
Publication date: 2010-04-21
Also published as: WO2009019039A1; DE102007037722B4; DE102007037722A1

Abstract

The invention relates to a door hinge with an arrester for motor vehicles, having a pillar fitting that can be disposed on a vehicle chassis, a door fitting that can be connected to a vehicle door, and a hinge pin connecting the door fitting and the pillar fitting in a pivoting manner, wherein the arrester is attached to either the door or pillar fitting and wherein the hinge pin is disposed on the other door or pillar fitting in a rotationally secure manner and is rotatably disposed in the arrester. In order to provide a door hinge with an arrester of the kind mentioned above that allows a step-free locking of a vehicle door in any opening position, the invention proposes that the arrester comprise two chambers that are separated from each other by an adjustable separating element in a liquid-tight fashion, said chambers being filled with a fluid medium, wherein the separating element is disposed in the arrester and connected to the hinge pin such that a rotational movement of the hinge pin relative to the arrester results in an adjustment movement of the separating element causing a change in volume in the chambers, and wherein the chambers are connected to each other via flow channels that are closed by valve elements.

Description

Door hinge with lock for motor vehicles

The invention relates to a hinged door hinge for motor vehicles, with an attachable to a vehicle body pillar console, connectable to a vehicle door door bracket, a door console and the pillar bracket pivotally connecting hinge pin, wherein the lock is attached to the one of door or pillar console and the hinge pin on the other of door or column console is rotationally fixed and rotatably arranged in the lock.

Door retainers of the type mentioned are used in motor vehicles, where they take over both the function of the articulated articulation of the vehicle door and the function of locking the vehicle door in defined opening positions. A generic door lock is known, for example, from DE 103 43 587 B4, in which the lock has a latching unit, by means of which a vehicle door fastened to a vehicle body using this door hinge can be locked in several fixed opening positions.

Such door hinges with lock have the disadvantage that the vehicle door can be locked only in the predetermined opening positions. As a rule, these are two further opening positions in addition to the maximum opening position of the vehicle door. A definition of the vehicle door in intermediate positions or arbitrary positions is not possible. Rather, such door hinges have the disadvantage that if a user releases the vehicle door in a non-predetermined opening position, the vehicle door is accelerated into the next predetermined opening position. This can lead to considerable damage to the vehicle door, in particular if an obstacle, for example another vehicle or a building wall, is located in this predefined position.

The invention has for its object to provide a door hinge with lock of the aforementioned type, which allows a stepless locking a vehicle door in any open position.

The invention solves the problem by a door hinge with the features of

BESTATIGUNGSKOPIE claim l. Advantageous developments of the invention are specified in the dependent claims.

Characteristic of the door hinge according to the invention is that the lock has two fluid-tight demarcated by an adjustable separating element from each other and filled with a fluid medium chambers, wherein the separating element is arranged in the lock and connected to the hinge pin, that a rotational movement of the hinge pin relative to the lock a volume change of the chambers causing adjusting movement of the separating element has the consequence and wherein the chambers are connected to each other via closed by valve elements flow channels.

Essential for the operation of the door hinge according to the invention are filled with a fluid medium, separated by the partition liquid-tight chambers within the arrester whose respective volume varies as a result of a caused by rotation of the hinge pin adjustment movement of the separating element, wherein the fluid medium in dependence Moving direction of the separating element after opening of the corresponding valve element flows through the associated flow channel from one chamber to the other chamber.

In the static state of the hinge, that is, when a door connected to the door hinge is arranged in a desired opening position, a transport of the fluid medium between the chambers via the flow channels is obstructed by the valve elements and the vehicle door is locked. For pivoting the vehicle door, it is first necessary to generate a pressure in one of the chambers, depending on the direction of movement, by actuation of the vehicle door, which pressure is high enough to cause an opening of one of the valve elements, so that a flow channel is opened is, which allows the fluid exchange between the chambers. In dynamic operation, ie after opening one of the valve elements and when pivoting the vehicle door, it is then possible to pivot them with a much lower force than was required to actuate the valve elements, relative to the vehicle body. After reaching the desired opening position and stopping the vehicle door then close the valve elements again the flow channels, since the system is again substantially depressurized. The vehicle door is then secured in the desired opening position against unwanted pivoting, wherein the Betätigungsmomemt required to open the valve elements corresponds to the locking torque of the vehicle door.

To transmit the pivoting movement of the vehicle door connected to the door console on the lock, the hinge pin is preferably arranged rotationally fixed to the door bracket and rotatable in the lock. The partition of the arranged in this case on the column console lock is in turn connected to the hinge pin, that a rotational movement of the hinge pin has an adjustment of the separating element within the arrester result, which is required for the operation of the motor vehicle door hinge according to the invention. During the adjustment movement, the volume of the individual chambers changes depending on the direction of the adjustment movement. The volume of one chamber decreases as the volume of the other chamber increases accordingly, keeping the total volume constant.

The door hinge according to the invention has the advantage of a particularly reliable operation due to its small number of movable components. In addition, it can be particularly small and inexpensive to produce in a simple manner. Wear, even required sealing elements, is not expected, especially due to the low pressures.

The design of the separating element, the chambers and the transmission of the pivoting movement of the vehicle door on the separating element is basically arbitrary. For example, an embodiment with a dividing element which can be rotated about the hinge pin axis is conceivable, the chambers being arranged in a plane perpendicular to the hinge pin axis.

The design and arrangement of the valve elements and the flow channels can be chosen freely depending on the design conditions. The task of the valve elements is the closed in the static state of the door hinge through the valve elements flow channels on reaching the above Valve elements of definable pressure to open, so that a flow around the fluid medium between the chambers is possible.

According to a particularly advantageous embodiment of the invention, the valve elements and the flow channels are arranged in the separating element. This embodiment of the invention enables a particularly small, in particular narrow design of the door hinge. In addition, such a trained door hinge can be produced particularly cost-effective due to its simple structure.

According to an alternative development of the invention, the flow channels and the valve elements can also be arranged in a housing of the arrester. The flow channels run in any way in the housing, are each closed at one point by a valve element and open with their ends in the chambers. This results in the possibility of making the separating element particularly simple and, above all, particularly small, so that even a corresponding arrester has only a small space requirement. In addition, this embodiment of the invention has a greater freedom of design in the arrangement of the valve elements. These may, for example, be arranged in such a way that they may be accessible without extensive disassembly of the door hinge.

According to an advantageous embodiment of the invention, the separating element is arranged in such a manner in the lock and is connected to the hinge pin, that a rotational movement of the hinge pin causes a longitudinal movement of the separating element along the hinge pin.

According to this embodiment of the invention, a caused by a pivoting movement of the vehicle door rotational movement of the hinge pin is relatively converted with respect to the lock in a longitudinal movement of the separating element within the arrester. This embodiment of the invention is characterized by its extremely small installation space, wherein the chambers, based on the installation position, are arranged one above the other about the hinge pin axis. The connection of the separating element with the hinge pin allows a direct and immediate transmission of the pivotal movement of the vehicle door on the lock. The transformation of the pivoting movement the hinge pin in a longitudinal movement of the separating element also allows a particularly slim design of the door hinge.

The arrangement or connection of the hinge pin with the separating element is basically freely selectable. According to a particularly advantageous embodiment of the invention, however, the separating element is arranged eccentrically to the longitudinal axis of the hinge pin on this. The embodiment of the invention makes it possible to dispense with a possibly required separate rotation, since the displaceability of the separating element is limited to movements along the hinge axis by the eccentric arrangement. Such a trained door hinge is characterized by its high reliability, and it is particularly inexpensive to produce. The achieved anti-rotation allows direct conversion of the rotational movement of the hinge pin on the separator.

According to a further advantageous embodiment of the invention, the separator is formed by a piston, wherein the lock has two liquid-tight separated from each other by the piston and filled with a fluid medium chambers, wherein the piston is arranged in the lock and connected to the hinge pin, that a rotational movement of the hinge pin causes longitudinal movement of the piston along the hinge pin and wherein the piston has the flow channels connecting the chambers, which are closed by the valve elements.

According to this embodiment of the invention, a caused by a pivoting movement of the vehicle door rotational movement of the hinge pin is relatively converted with respect to the lock in a longitudinal movement of the piston within the arrester. This embodiment of the invention is characterized by its extremely small space for the lock, in particular the housing, which can be made very narrow because it can be dispensed with separate flow channels within the housing. The chambers are, based on the installation position, arranged one above the other about the hinge pin axis.

The design of the chambers in the lock using the advantageous legally enough to be provided piston, is basically freely selectable. In a simplest embodiment, the lock may, for example, have a corresponding interior with a corresponding piston. However, according to an advantageous embodiment of the invention, the chambers formed in a housing of the arrester are at one end in each case by mutually remote surfaces of the separating element, for example of the piston and the other, ie. These surfaces of the separating element, for example. Pistons opposite, arranged by a lower in the housing and upper ring disc limited.

The lower and upper annular disc, which is sealed both against the inner wall of the housing and against the annular disc penetrating partition member sealed components, ensure in a particularly reliable manner required for the function of the door hinge tightness of the chambers at all pressures incurred during operation , On a special configuration of the housing interior can be dispensed with due to the use of the annular discs. The separating element is in turn designed such that between it and the annular discs each have a chamber is formed, which are separated liquid-tight from each other and whose size is variable by moving the separating element.

The design of the separating element, eg. The piston to form the chambers can also be chosen freely. According to a particularly advantageous embodiment of the invention, however, the separating element has a center piece, the at least partially sealingly, d. H. in a region circumferentially liquid-tight against an inner wall of the housing and has a relative to the end regions of the separating element widened cross-section.

The adjacent to the center annular paragraphs form the sliding inner walls of the chambers. An educated according to this embodiment of the invention separating element is characterized by its particularly simple construction. The middle piece, which rests sealingly against an inner wall of the housing at least in one region, prevents an uncontrolled exchange of the fluid medium between the chambers, which affects the function of the door hinge, in a particularly simple manner. Depending on the ratio of Size of the center piece to the size of the end portions adjacent to the center, the area of the separating element acting for the pressure build-up can be chosen freely. A accordingly developed door hinge is characterized by its particularly simple structure and reliable operation.

In the case of advantageously provided use of washers in conjunction with a separator with end portions having a smaller cross-section than the center, the annular discs are according to an embodiment of the invention over the end portions of the separating element, for example, a piston and against the inner wall of the housing liquid-tight in arranged the lock and the centerpiece facing surfaces of the annular discs form the substantially fixed inner walls of the chambers.

The functioning of the door hinge according to the invention is already ensured if the separating element, for example the piston, is displaceably arranged with respect to stationary inner walls of the chamber, wherein the inner walls of the chamber can be formed by the annular disks, for example. According to a particularly advantageous embodiment of the invention, however, an annular disc is located on its side facing away from the chamber on a spring element which biases the annular disc in the direction of the chamber, wherein the spring element is preferably supported at its end facing away from the annular disc relative to the housing. A prestressed mounting of an inner wall of a chamber compensates in certain areas for volume fluctuations of the interior composed of the volume of the two chambers as a result of temperature fluctuations. Moreover, the spring element provides a constant pressure within the filled with the fluid medium interior. In operation, the spring-loaded annular disc is arranged quasi stationary. The support of the spring element can be made at any point. However, according to this embodiment of the invention, this is preferably done in the housing.

In principle, in addition to a stationary arrangement of both annular discs in the housing, both annular discs can be designed spring-loaded. According to a particularly advantageous embodiment of the invention, however, lies at least one annular disc with its side facing away from the chamber within the housing at this. In the case of using a loaded by a spring element annular disc, the support of the spring element, as already mentioned, in any way, preferably within the housing. According to a particularly advantageous embodiment of the invention, however, the end facing away from the annular disc of the spring element is supported on a screwed into the housing pressure plate. The use of a thrust washer makes it possible, depending on the depth of engagement, to set the biasing force generated by the spring element. Also, this embodiment of the invention allows a particularly simple and quick replacement in the event of a defect of the spring element. In addition, the pressure plate serves as a closure element for the housing, which prevents the entry of dirt, moisture, etc.

According to a further advantageous embodiment of the invention, the thrust washer further comprises an opening for radially supporting one end of the hinge pin. Accordingly, the thrust washer does not only fulfill a supporting function of the spring element and a protective function, but also serves for the radial mounting of the hinge pin, so that it is possible to dispense with additional components, wherein a sliding bush or the like is particularly advantageously arranged in the opening. In addition, the thrust washer can additionally serve as a stop element for a screwed onto the protruding from the thrust washer end of the hinge pin mounting nut, which can be fixed in the axial direction of the lock.

The operation of the door hinge according to the invention requires that a pivoting movement of the vehicle door causes a relative movement of the hinge pin relative to the lock, or the separating element, for example. The piston. A required rotationally fixed connection of the hinge pin with the door or column console can basically be configured arbitrarily. According to an advantageous embodiment of the invention, however, the hinge pin is formed at its end facing the other door or column console for positive connection with the other of door or column console. The hinge pin preferably has a web extending transversely to the hinge pin axis at its end facing the other one on the door or column console. Such an embodiment of the invention ensures in a particularly reliable Way that a pivoting movement of the vehicle door leads to a relative movement of the hinge pin relative to the lock. The extending transversely to the hinge pin axis web, which may be particularly advantageously also conical and thus facilitates assembly of the hinge pin in a corresponding receiving opening on the door or column console, characterized by its particularly high reliability of the compound.

According to a particularly advantageous embodiment of the invention, the hinge pin at its the other of the door or column console facing the end of a frontally resting on the housing flange. Such a flange, which, for example, in the case of using a cylindrical housing has a diameter which is greater than the inner diameter of the cylinder, serves for the axial positioning of the hinge pin in the lock. In addition, the flange serves as a housing cover, so that it is possible to dispense with further components for closing the housing. As a result, the door hinge can be produced in a particularly cost-effective manner. A particularly advantageously subsequent to the flange, projecting into the housing web, is used for easy radial alignment of the hinge pin relative to the housing.

The connection of the hinge pin to the piston such that a rotational movement of the hinge pin is converted into a translational movement of the piston, can in principle be configured in any desired manner. According to a particularly advantageous embodiment of the invention, however, the hinge pin for connection to the piston has an external thread and the piston has a correspondingly formed internal thread. This type of connection between the hinge pin and the piston is particularly easy to manufacture and makes it possible, depending on the choice of thread in a simple manner to achieve the desired conversion of the rotational movement in a translational movement. In particular, the use of a thread allows a substantially backlash-free conversion of the rotational movement of the hinge pin into a longitudinal movement of the piston. The hinge pin is particularly advantageously produced by cold extrusion and axially fixed in the housing rotatably mounted in this. According to a further embodiment of the invention, the hinge pin is one end fixed by a fixing screw against rotation on the door bracket and the other end by a screwed onto a threaded nut axially on the lock. Such an embodiment of the invention ensures in a particularly reliable manner a secure arrangement of the hinge pin in the lock, in which case the lock on the pillar bracket and the hinge pin is arranged against rotation on the door bracket. This is to be regarded as a preferred embodiment for the door hinge.

The door hinge according to the invention ensures that the vehicle door can be locked in any desired opening position relative to the door body. However, a lock is also in an area around a closed position of the vehicle door, d. H. even if the vehicle door is closed. According to a particularly advantageous embodiment of the invention it is therefore provided that the lock is designed such that in the region of a position of the separating element, for example. Pistons, which occupies this, when a vehicle door connected to the door console is in the region of its closed position, a the Valve elements bridging flow exists. By such Durchflußmöglichkeit prevents in the area around the closed position of the vehicle door - this is understood in the context of the invention, a position of the vehicle door in which it is in the closed position on the vehicle body or has only a small opening angle - by the lock the vehicle door is locked. Such an embodiment of the invention increases the ease of use, since the opening of the vehicle door can be dispensed with a required to release the locking actuator torque for pivoting the vehicle door. The Durchflußmöglichkeit forms a kind of bypass line, which allows despite closed valve elements, the exchange of the fluid medium between the chambers.

The embodiment of the Durchflußmöglichkeit can basically be done in any way. According to a particularly advantageous embodiment of the invention, the housing has on its inner wall in the closed position of the vehicle door associated position of the piston has a groove which is arranged such that in this position, the chambers against each other sealing sealing ring of the center in the region of the groove is. The arrangement of a groove, preferably in the region of Upper or lower annular disc of the inner wall of the housing in a manner extending in hinge pin axis direction, presented a particularly simple way to produce a connection possibility of the chambers bridging the valve elements.

When using a piston as a separating element, the operation of the door hinge according to the invention is achieved in that an axial movement of the piston takes place as a result of a rotation of the hinge pin. It is not essential that the piston performs no radial movement. According to an advantageous embodiment of the invention, however, the piston is provided for torsion-proof arrangement in the housing with at least one groove arranged in the region of the middle piece for receiving a securing means arranged in the housing. Such an arrangement of the piston in the housing ensures that the complete rotational movement of the hinge pin is converted into an axial movement of the piston. As a result, particularly short, required to release the lock switching paths are achieved. The securing means are particularly advantageously formed by two oppositely projecting through the housing wall into corresponding grooves on the center pin.

In principle, the piston can also be used to use a limitation of the pivoting angle, namely when the axial displaceability of the piston within the arrester is limited by corresponding stop elements. According to a particularly advantageous embodiment of the invention, however, the axial displaceability of the piston in the lock is designed such that the chambers are filled in the entire pivoting range of the door bracket relative to the column console with a fluid medium. This embodiment of the invention ensures that the function of the arrester is ensured in the entire pivoting range of the vehicle door. Wear and tear that can result from a variety of end stops is effectively prevented.

According to a particularly advantageous embodiment of the invention, the door console for limiting the pivoting movement relative to the column console on a boom with a engageable with the column console stop surface. Such a Stop represents a particularly simple way to limit the tilt angle of the door bracket against the column console and set the maximum opening angle.

The arrangement of the valve elements as well as the selection of the valve elements can basically be done in any way. According to an advantageous embodiment of the invention, however, the valve elements are arranged in corresponding openings in the center piece of the piston. Such an embodiment of the invention enables a particularly cost-effective production of the door hinge. The valve elements, which are particularly advantageously simple spring-loaded ball elements, ensure the function of the door hinge in a particularly reliable manner. According to a particularly advantageous embodiment of the invention, the valve elements are adjustable. This embodiment allows a particularly wide applicability of the door hinge according to the invention. The adjustability of the valve elements makes it possible to adapt to different, the operating conditions corresponding load cases.

In principle, any suitable medium can also be used as the fluid medium. According to a particularly advantageous embodiment of the invention, however, the fluid medium is formed by a hydraulic or servo oil.

Embodiments of the invention are explained below with reference to the drawings. In the drawings show:

1 is a perspective view of a door hinge with lock; Fig. 2 is an exploded view of the door hinge of Fig. 1; Fig. 3 is a plan view of the door hinge of Fig. 1; Fig. 4 is a view of a section of the door hinge of Fig. 1 along the section line

A-A of Fig. 3; Fig. 5 is a view of a section of the door hinge of Fig. 1 along the section line

B-B of Fig. 3

Fig. 6 is an enlarged view of a section of the arrester of Fig. 1 taken along section line BB of Fig. 3; 7 shows a perspective view of a pillar console with an open stop arranged thereon;

Fig. 8 is an enlarged view of the detail Z of Fig. 7;

9 is a perspective view of a partially cut column console of a second embodiment of a door hinge;

FIG. 10 is a side view of the opened pillar bracket of the door hinge of FIG. 9 without a separator; FIG.

Fig. 11 is a perspective view of a third embodiment of a door hinge and Fig. 12 is a perspective view of a fourth embodiment of a door hinge.

In Fig. 1, a door hinge 1 is shown for the articulated arrangement of a motor vehicle door, not shown here on a vehicle body also not shown here in a perspective view. For arranging the door hinge 1 on a vehicle body, this has a pillar bracket 3, which can be screwed to the vehicle body. The arrangement of the vehicle door on the hinge 1 takes place on a door bracket 2.

The column bracket 3 and the door bracket 2 are pivotally connected to each other via a hinge pin 10, wherein the hinge pin 10 is rotationally fixed to a extending from a base plate 5 of the door bracket 2 boom 8 is arranged. The hinge pin 10 extends through a connected to a base 6 of the column bracket 3 lock 4 and is rotatably mounted in a housing 7 of the lock 4, so that a pivoting of the door bracket 2 relative to the pillar bracket 3 is ensured. In order to determine a maximum opening angle of the vehicle door, the boom 8 additionally has a stop surface 9 which comes into contact with the base body 6 of the column console 3 when the maximum opening angle is reached (compare FIGS. 2-6).

For torsion-proof reception of the hinge pin 10 on the arm 8 of the column console 2, the hinge pin 10 at its in the installed position the boom 8 facing the end extending transversely to the hinge pin axis, in introduction tion direction in the boom 8 tapered web 15. The web 15 is arranged in the assembled state in a correspondingly configured receiving opening in the boom 8. To secure the position of the hinge pin 10 on the boom 8, the hinge pin 10 at its end facing the boom 8, an internal thread 16. This serves to receive a fastening screw 17 which can be screwed in by the side of the extension arm 8 opposite the hinge pin 10.

The fastened to the base 6 of the column bracket 3 lock 4 has a hollow cylindrical housing 7. Within the housing 7, a piston 18 längsverschiebieblich, but arranged against rotation. For a rotationally secure arrangement, the piston 18 has two grooves 20 extending in the hinge axis direction in the region of a middle piece 19, which in the mounted state serve to receive securing pins 39 extending through a bore 40 in the wall of the housing 7. The center piece 19 of the piston 18 has on its peripheral surface a sealing ring 23, through which the - relative to the installation position - located above and below the piston 18 areas in the housing 7 are liquid-tight delimited from each other. To the centerpiece 19 close to a paragraph a smaller cross-section than the middle piece 19 having end portions 25, 26 of the piston 18, which in the installed position above and below the middle piece 19, an upper and lower annular chamber 35, 36 in the housing form.

The chambers 35, 36 are bounded on the one hand by the paragraphs of the center piece 19 adjoining the end sections 25, 26. Parallel to the hinge pin axis, the chambers 35, 36 bounded by an inner wall of the housing 7 and the end portions 25, 26. On the heels of the middle piece 19 opposite sides of the chambers 35, 36 bounded by annular discs 21, 22, each having at its periphery a sealing ring 23, which serves for liquid-tight arrangement of the annular discs 21, 22 in the housing 7. The - based on the installation position - upper annular disc 21 is located within the housing 7 on a paragraph. On the other hand, the lower annular disk 22 is spring-loaded on its side facing away from the piston 18 by a compression spring 30, the compression spring 30 being supported on a pressure disk 28 which can be screwed into an internal thread 29 of the housing 7. In addition to the seals 23, for sealing the annular disks 21, 22 with respect to an inner wall of the housing. 7 serves, the annular discs 21, 22 additionally on inner sealing rings 24, which at the annular disks 21, 22 penetrating end portions 25, 26 of the piston

18 lie liquid-tight.

The inner wall of the housing 7, the heels of the middle piece 19, the end portions 25, 26 and the annular discs 21, 22 thus form two fluidly separated by the middle piece 19 chambers 35, 36 within the housing 7 of the arrester 4. In the assembled state is located within these chambers 35, 36, a servo oil. In order to allow a longitudinal displacement of the piston 18 within the housing 7, the piston 18 additionally in the region of its center piece 19 on two passage openings 34, which connect the two chambers 35, 36 together. The passage openings 34 are through two in receiving openings 32 in the middle piece

19 inserted valve elements 31a, 31b closed, wherein depending on the direction of movement of the piston 18 is always one valve element 31a, 31b opens upon reaching a predetermined pressure, whereas the other remains in a closed position.

For converting the rotational movement of the hinge pin 10 in a longitudinal movement of the piston 18 within the housing 7, the hinge pin 10 has an external thread 11 which is in engagement with an internal thread 27 of the piston. During operation of the door hinge 1, the chambers 35, 36 are filled with a servo oil and the entire system is due to the spring-loaded annular disc 22 under a constant pressure.

In the static state, ie at a standstill of the vehicle door, the Ventilele- elements 31 a, 31 b are closed and prevent by the blockage of the passage openings 34 thus a free pivoting of the door 2 connected to the door of the vehicle. For pivoting, it is first necessary that a user by pressure on the vehicle door in the desired pivoting direction a defined pressure in one of the chambers 35, 36 (depending on the pivoting direction) builds. This must be so high that thereby the corresponding valve element 31a, 31b opens and there is a flow connection between the chambers 35, 36. The servo oil can then pass from one chamber 35, 36 into the other chamber 35, 36. After opening one of the valve elements 31a, 31b, the pivoting movement takes place with respect to the one Opening required effort considerably reduced effort. After reaching an arbitrary opening angle and completion of the pivoting movement, the system is again in the static, pressureless state in which the valve elements 31a, 31b again close the passage openings 34 and the vehicle door arranged on the door console 2 is locked in its position.

For rotatable mounting of the hinge pin 10 in the housing 7 of the lock 4, the thrust washer 28 has a plain bearing 38. At the end facing the boom 8, the hinge pin 10 has a flange 14 which closes the housing 7, wherein it rests on the peripheral edge of the housing 7 with the interposition of a sliding ring 41. For radial support also serves a slide bushing 37 which is disposed on a extending from the flange 14 in the direction of the piston 18 circumferential web. On the opposite side of the boom 8, the hinge pin 10 is axially fixed by a screwed onto a thread 12 of the hinge pin 10 nut 13 on the pressure plate 28. In one embodiment, not shown here, the boom 8 opposite end of the hinge pin 10 is riveted.

In order to prevent a locking of a door connected to the door hinge 1 also in a range (o ° to 15-20 ⁰ opening angle of the vehicle door) takes place about the closed position of the vehicle door, which would lead to loss of comfort, the inner wall of the housing 7 in Area of the upper pressure chamber 35 has a groove 33 extending in hinge pin axis. This groove 33 is arranged such that the seal 23 of the piston 18 is bridged when the piston 18 reaches a position within the housing 7 which corresponds to the area of the vehicle door about its closed position. Ideally, the groove 33 covers a range from o to z. B. 15-20 ° opening angle of the vehicle door. The groove 33 makes it possible that the servo oil without actuation of the valve elements 31a, 31b passes from one chamber 35 into the other chamber 36 and vice versa. The seal 23 of the middle piece 19 is bridged over. The groove 33 forms a bypass line (see Figures 7 and 8).

In Fig. 8 and 9, a pillar bracket 3a of another embodiment of a door hinge, not shown here is shown. The main difference between the lock 4 shown in Figures 1-8 and the lock 4a shown in Figures 9 and 10 is in the embodiment of the separating element 18a, and the arrangement of the flow channels 34a and valve elements 31c. The hinge pin 10a has in its middle region an internal thread 11a through which the separating element 18a is connected to the hinge pin 10a by means of a correspondingly formed internal thread (not shown here). A rotational movement of the hinge pin 10a leads to a translational movement of the separating element 18a. The separating element 18a has two tapered regions 25a, 26a arranged on both sides of a flat center piece 19a. The lower tapered region 26a is axially displaceably mounted within the housing 7a. The upper tapered region 25a is axially displaceably mounted in a cap 43a which can be inserted into the housing. In order to seal off the chambers 35a, 36a separated by the center piece 19a from the tapered portions 25a, 26a, these sealing elements are embedded in the housing 7a and the closure cap 43a, respectively. The center piece 19a is in turn provided with a circumferential sealing ring which separates the chamber 35a and the chamber 36a liquid-tight from each other.

For axial and radial securing position of the hinge pin 10a this is rotatably mounted on its the web 15 opposite end using a locking ring 44 on a hinge pin guide 42 inserted into the housing 7a. At the hinge pin guide 42 opposite ends of the hinge pin 10a is located with its shoulder 14 on the housing 7a.

The chambers 35a, 36a are connected to each other via flow channels 34a, which are disposed within the housing 7a, and ends with their ends respectively in the chambers 35a, 36a. A valve element 31c, which is also inserted in the housing 7a, determines the flow direction of the fluid through the flow passage 34a, wherein a flow in only one direction and only when generating a predetermined by the valve elements 31c, the pressure high enough to the valve element 31c is possible. A second flow channel 34a, which is likewise arranged on the circumference of the chambers 35a, 36a, is likewise closed by a valve element, this permitting a flow which is opposite to the first valve element 31c. - l8 -

The valve elements 31c are screwed into the housing 7a and loaded by means of spring elements, wherein the pressure is particularly advantageously adjustable via the spring element, in which the valve elements 31c open the respective flow channel 34a.

The functional principle of the illustrated in Figs. 9 and 10, the actuator 4a corresponds to the operating principle of the lock 4 shown in FIGS. 1-8. A pivotal movement of a vehicle door, not shown here is by the rotationally fixed connection between the door bracket and the hinge pin 10 a, wherein the Web 15 engages in a corresponding receiving opening on the door bracket, transferred to the hinge pin 10a.

The torque acting on the hinge pin 10a when pivoting the vehicle door or at the beginning of the pivoting movement is transmitted from the hinge pin 10a via the thread 11a to the separating element 18a. The torque of the hinge pin 10a is converted into a hinge axis direction force of the partition member 18a, and the eccentric arrangement of the partition member 18a on the hinge pin 10a restricts the direction of movement of the partition member 18a to movements in the hinge axis direction. Due to the introduction of force on the separating element 18a and thus the center piece 19a, the pressure is increased in one of the chambers 35a, 36a filled with hydraulic oil, depending on the direction of movement.

Via the chambers 35a, 36a connecting flow channels 34a and the pressure on the arranged in the flow channels 34a valve elements 31c is increased. If the pressure reaches a predetermined value by the valve elements 31c, opens - depending on the direction of movement of the separating element 18a - one of the valve elements 31c, so that the hydraulic oil from one chamber 35a, 36a in the other chamber 35a, 36a can flow around and pivoting the Vehicle door is possible.

After completion of the pivoting operation of the vehicle door, the pressure in the chambers 35a, 36a decreases, so that the valve element 31c closes again and causes a locking of the vehicle door. FIG. 11 and FIG. 12 show in a perspective view two further embodiments of the door hinge 1 according to the invention. Their construction differs from the previously described embodiments by the structure of the lock 4b. Thus, in contrast to the previously described fasteners 4, 4a, the separating element 18 is not arranged directly on the hinge pin 10 but on a guide pin arranged parallel to the hinge pin 10 along the longitudinal axis of the fastener 4b.

The rotatably mounted guide pin, which, like the separating element 18, is arranged in a cylinder 50, 50a, is engaged by a toothed element arranged against rotation on the guide pin with a toothing element likewise arranged on the hinge pin 10 so as to be rotationally secure, so that a rotational movement the hinge pin 10 causes a rotational movement of the guide pin, which in turn results in an adjustment of the separating element within the cylinder 50, 50a along the guide pin.

In principle, the mode of operation of the arrester 4b, u. a. the conversion of the rotational movement of the guide pin in a translational movement of the separating element with the above-described fasteners 4, 4a match, wherein the separating element 18 is not arranged on the hinge pin 10, but on the guide pin. The arrangement of the separating element 18 on the guide pin, or in the cylinder 50, 50a corresponds to the previously shown arrangement of the separating element 18 on the hinge pin 10 or in the housing 7.

The coupling of the hinge pin 10 with the guide pin using a arranged under a cover 51 of the housing 7b of the lock 4b toothing allows over- / reduction of the rotational movement of the hinge pin 10 in the manner of a transmission and so optimal determination of the rotational movement of the guide pin and thus adjusting movement the separating element 18 in dependence on the pivot angle of a arranged on the door hinge 1 door. The orientation of the cylinder 50, 50a, namely directed in the installed position up or down, can be carried out according to the present conditions.

Claims

- 2O-claims

1. Door hinge with lock for motor vehicles, with

5 - a pillar panel which can be arranged on a vehicle body, a door pillar connectable to a vehicle door, a hinge pin pivotally connecting the door pillar and the pillar bracket, the lock being attached to one of the door or pillar brackets, and 10 - the hinge pin on the other door or column console is rotationally and rotatably arranged in the lock, characterized in that the lock (4, 4a, 4b) separated by an adjustable separating element (18) liquid-tight from each other and filled with a fluid medium chambers (35,! 5 36) , wherein the separating element (18) in such a manner in the lock (4, 4a, 4b) and is connected to the hinge pin (10), that a rotational movement of the hinge pin (10) relative to the lock (4, 4a, 4b) a Volume change of the chambers (35, 36) causing adjusting movement of the separating element (18) has, and wherein the chambers (35, 36) about 0 sene flow channels (34) are interconnected by valve elements (31a, 31b) verschlos-.

2. Door hinge according to claim 1, characterized in that the flow channels (34) and the valve elements (31 a, 31 b) in the separating element (18, 18 a) are arranged. 5

3. Door hinge according to claim 1 or 2, characterized in that the flow channels (34a, 34b) and the valve elements (31c) in a housing (7a) of the arrester (4a) are arranged.

4. Door hinge according to claim 1 or 2, characterized in that the separating element 0 (18, 18 a) in such a manner in the lock (4, 4 a, 4 b) and arranged with the hinge pin

(10) is connected such that a rotational movement of the hinge pin (10) causes a longitudinal movement of the separating element (18) along the hinge pin (10).

5. Door hinge according to one of the preceding claims, characterized in that the separating element (18) is arranged eccentrically to the longitudinal axis of the hinge pin (10) on this.

6. Door hinge according to one of the preceding claims, characterized in that the separating element is formed by a piston (18), wherein the lock (4) two by the piston (18) liquid-tightly separated from each other and filled with a fluid medium chambers (35, 36), wherein the piston (18) is arranged in the lock (4) and connected to the hinge pin (10), that a rotational movement of the hinge pin (10) causes a longitudinal movement of the piston (18) along the hinge pin (10) and wherein the piston (18) has the flow channels (34) connecting the chambers (35, 36), which are closed by the valve elements (31a, 31b).

7. Door hinge according to claim 1 or 2, characterized in that in a housing (7, 7 a) of the fastener (4) formed chambers (35, 35 a, 36, 36 a) at one end in each case by mutually remote surfaces of the separating element (18, 18 a ) and other ends by a in the housing (7, 7a) arranged lower and upper annular disc (21, 22) are limited.

8. Door hinge according to one of the preceding claims, characterized in that the separating element (18, 18 a) has a central piece (19, 19 a) which at least partially sealingly against an inner wall of the housing (7, 7 a) and a relation to the end of the Separating element (18, 18a) has a widened cross-section, wherein the annular piece (19, 19a) adjacent to the annular shoulders form the displaceable inner walls of the chambers (35, 35a, 36, 36a).

9. Door hinge according to one of the preceding claims, characterized in that the annular discs (21, 22) against the tapered portions of the separating element (18, 18 a) and against the inner wall of the housing (7, 7 a) liquid-tight in the

Locking plates (4, 4a, 4b) are arranged and the middle piece (19, 19a) facing surfaces of the annular discs (21, 22) substantially fixed inner walls of the chambers (35, 35a, 36, 36a) form.

10. Door hinge according to one of the preceding claims, characterized in that an annular disc (22) on its side facing away from the chamber (36) on a spring element (30) which abuts the annular disc (22) in the direction of the chamber (36) - Tensioned, wherein the spring element (10) is preferably supported at its end facing away from the annular disc (22) opposite the housing (7).

11. Door hinge according to one of the preceding claims, characterized in that an annular disc (21) with its side facing away from the chamber (35) within the housing (7) rests against this.

12. Door hinge according to one of the preceding claims, characterized in that the annular disc (22) facing away from the end of the spring element (10) is supported on a in the housing (7) screw-thrust washer (28).

13. Door hinge according to one of the preceding claims, characterized in that the pressure plate (28) has an opening for the radial mounting of one end of the hinge pin (10).

14. Door hinge according to one of the preceding claims, characterized in that the hinge pin (10) at its the other of door or column console (2, 3) facing the end for positive connection with the other of door or column console (2, 3) is formed, preferably has a transverse to the hinge pin axis extending web (15).

15. Door hinge according to one of the preceding claims, characterized in that the hinge pin (10) at its end of the door or column console (33) facing the end face on the housing (7) resting flange (14).

16. Door hinge according to one of the preceding claims, characterized in that the hinge pin (10) for connection to the separating element (18, 18 a) has an external thread (12) and the separating element (18, 18 a) has a correspondingly formed internal thread (11).

17. Door hinge according to one of the preceding claims, characterized in that the particularly advantageously kaltfließpreßtechnisch produced hinge pin (10) axially in the housing (7) fixed rotatably mounted in this.

18. Door hinge according to one of the preceding claims, characterized in that the hinge pin (10) at one end by a fastening screw (17) against rotation on the door bracket (2) and the other end by a screwed onto a thread (12) nut (13) axially on the Lock (4) is fixed.

19. Door hinge according to one of the preceding claims, characterized in that the lock (4, 4 a, 4 b) is formed such that in the region of a position of the separating element, preferably of the piston (18), which occupies this, if one with the Door console (2) connected vehicle door is in the region of its closed position, a valve elements (31a, 31b, 31c) bridging flow exists.

20. Door hinge according to one of the preceding claims, characterized in that the housing (7) on its inner wall in the region of the closing position of a vehicle door associated position of the piston (18) has a groove (33) which is arranged such that a the chambers (35, 36) against each other sealing sealing ring

(23) of the central piece (19) in the region of the groove (33) is arranged.

21. Door hinge according to one of the preceding claims, characterized in that the inner wall of the housing (7) in the region of the upper or lower annular disc (21, 22) in a hinge pin axis extending groove (33).

22. Door hinge according to one of the preceding claims, characterized in that the piston (18) for its rotationally secure arrangement in the housing (7) at least one in the region of the central piece (14) arranged groove (26) for receiving a housing in the ( 7) arranged securing means (34).

23. Door hinge according to one of the preceding claims, characterized in that the securing means by two opposite through the housing wall in grooves (20) projecting pins (39) are formed.

24. Door hinge according to one of the preceding claims, characterized in that the axial displaceability of the separating element (18, 18 a) in the lock (4) is designed such that the chambers (35, 35 a, 36, 36 a) in the entire pivoting range of the door bracket (2) relative to the column console (3) are filled with a fluid medium.

25. Door hinge according to one of the preceding claims, characterized in that the door bracket (2) for limiting the pivoting movement relative to the Säulenkonso- Ie (3) a boom (8) having a with the column console (3) engageable stop surface (9) having.

26. Door hinge according to one of the preceding claims, characterized in that the valve elements (31 a, 31 b) are arranged in corresponding openings in the center piece (19) of the piston (18).

27. Door hinge according to one of the preceding claims, characterized in that the valve elements (31 a, 31 b, 31 c) are adjustable.

28. Door hinge according to one of the preceding claims, characterized in that the fluid medium is formed by a hydraulic oil.

29. Door hinge according to one of the preceding claims, characterized in that a guide pin about its longitudinal axis rotatably in the lock (4b) arranged and is so connected to the hinge pin (10) that a rotational movement of the hinge pin (10) is a rotational movement of the Guidance pin causes, wherein the separating element (18) is arranged on the guide pin, that a rotational movement of the guide pin leads to an adjusting movement of the separating element (18).

30. Door hinge according to one of the preceding claims, characterized in that the guide pin and the hinge pin (10) via mutually engaged, a corresponding toothing having coupling elements, preferably gears, are connected.