Vehicle door device

Abstract

Vehicle door device (1), in particular for a passenger car (101), with at least one door base body (2) and with at least one shaft reinforcement (3) for reinforcing the door base body (2) in the region of at least one shaft opening (13), characterized in that the shaft reinforcement (3) is supported on the door base body (2) by means of at least one forged connecting element (4) which, with respect to the longitudinal direction of the vehicle door device (1), is arranged at least in sections between the shaft reinforcement and the door base body, and in that the connecting element (4) is formed in one piece and comprises at least one hook element (34) and at least one lug (44), and in that the hook element (34) engages in at least one recess (23) formed in the shaft reinforcement (3), and in that the lug (44) engages in at least one cutout (32) formed in the door base body (2).

Description

The present invention relates to a vehicle door device having at least one door base body and having at least one shaft reinforcement for reinforcing the door base body in the region of at least one shaft opening, and to a motor vehicle having such a vehicle door device.The doors of motor vehicles and, for example, passenger cars are frequently equipped with a shaft reinforcement which stiffens the door in the region of a shaft opening. The shaft opening is generally part of a window shaft into which a window pane can be lowered. The shaft reinforcement is often fastened to a supporting component of the door, which component also serves, for example, to receive an outer skin of the door.For example, DE 10 2015 105 913 A1 discloses a vehicle door device with a shaft reinforcement, which comprises an inner door shaft reinforcement and an outer door shaft reinforcement as well as a reinforcement element. The reinforcing element is bonded or welded to the inner and outer door shaft reinforcement or connected by means of self-piercing rivets.The connection of the shaft reinforcement is of decisive importance here, since in the event of a crash, it exerts a considerable influence on the stability of the door and also of the overall body. In the event of a front crash and particularly in the event of a crash in the lateral front region (so-called small overlap crash), it is very important that the door can dissipate the forces introduced into the vehicle body regions lying behind. It is particularly problematic if the door slips outwards or exits from its door shaft.A connection of a side impact strut of a vehicle door to a door panel resting against the longitudinal side of the side impact strut is shown in FR 2 893 681 A1.It is therefore the object of the present invention to improve the crash behavior of a vehicle door device. In particular, in the event of a crash and in particular in the event of a small overlap crash, the door is to be counteracted from slipping outwards.This object is achieved by a vehicle door device having the features of claim 1 and by a motor vehicle according to claim 9. Further advantages and features of the present invention are evident from the general description and the description of the exemplary embodiments.The vehicle door device according to the invention is suitable and designed in particular for a passenger car. The vehicle door device comprises at least one door base body and at least one shaft reinforcement for reinforcing the door base body in the region of at least one shaft opening. In this case, the shaft reinforcement is supported on the door base body by means of at least one forged connecting element arranged at least in sections between the shaft reinforcement and the door base body with respect to the longitudinal direction of the vehicle door device. The connecting element is formed in one piece and comprises at least one hook element and at least one nose. The hook element engages in at least one recess formed in the shaft reinforcement. The nose engages in at least one recess formed in the door base body.The vehicle door device according to the invention offers many advantages. A considerable advantage is offered by the support with the forged connecting element. The forged connecting element offers a particularly favorable transmission or absorption of the forces occurring in the event of a crash. The shaft reinforcement is supported with the forged connecting element in such a way that slipping of the door outwards during a crash event can be counteracted very effectively. Thus, safety for the occupants in a crash event is significantly improved.It is also particularly advantageous that, due to the forged configuration of the connecting element, an undesired deformation in the event of a crash is counteracted very effectively. In contrast, for example in the case of sheet metal parts or folded parts, it was frequently possible to observe an unfavorable deformation in the event of a crash, which deformation leads to the door slipping off to the outside.The connecting element is preferably formed as a solid forged part. A deformation in the event of a crash is thus counteracted particularly effectively. It is also possible for the connecting element to comprise at least one solid forged part. The connecting element can also be partially designed and can comprise at least one cavity, for example. In particular, the connecting element is designed to be flexurally rigid under the forces to be expected during use in operation. The connecting element is formed in one piece. In particular, the connecting element is formed as a one-piece solid forged part.The shaft reinforcement is preferably fastened directly to the connecting element and preferably screwed. This offers a reliable and reliable support of the shaft reinforcement and a particularly favorable transmission of forces. It is also possible for the shaft reinforcement to be fastened indirectly to the connecting element. Other suitable types of connections are also possible. It is also possible to provide two or more identical or different types of connection for fastening the shaft reinforcement to the connecting element.In particular, the door base body comprises at least one door inner part and at least one lock reinforcement arranged on the door inner part. Preferably, the connecting element is fastened to the lock reinforcement. It is also possible and preferred for the connecting element to be fastened to the door inner part together with the lock reinforcement. Such embodiments provide a particularly reliable connection of the shaft reinforcement, so that forces are advantageously transmitted. It is possible that at least one common screw connection is provided for fastening the connecting element and the lock reinforcement to the door inner part.The door inner part is preferably provided by at least one sheet metal body. The door inner part serves in particular for receiving a door outer skin and / or a door inner lining and / or other suitable components. The lock reinforcement serves in particular for reinforcing or stiffening the door inner part, preferably at least in the region of a door lock device.The connecting element can be fastened directly or indirectly to the lock reinforcement. The connecting element can be fastened directly or indirectly to the door inner part. Preferably, a fastening is provided by means of at least one screw connection. The connecting element can be fastened both to the lock reinforcement and to the door inner part. It is possible for the connecting element to be fastened to one or two or more other suitable door components.In an advantageous embodiment, the connecting element comprises at least one threaded section for receiving at least one screw connection means. This enables reliable and at the same time inexpensive assembly. In particular, the connecting element for fastening the shaft reinforcement and the door inner part and / or the lock reinforcement comprises at least one threaded section in each case. The fastening is effected, for example, by screwing a screw into the threaded section. Other suitable types of mounting or fastening means are also possible.It is according to the invention that the connecting element comprises at least one hook element. According to the invention, the hook element engages in at least one recess formed in the shaft reinforcement. This offers a considerably improved transmission of the forces occurring. For example, in the event of a crash, a movement of the connecting element is transmitted particularly specifically to the shaft reinforcement or other door components. Thus, slipping off to the outside can be counteracted very effectively.The recess is preferably arranged in at least one wall of the shaft reinforcement, which in an operationally installed position is directed towards an outer side of the vehicle door device. The recess is preferably circumferentially closed. For example, the recess is formed as an eyelet. A circumferentially open recess is also possible.It is possible and preferred for the hook element to be accommodated in the recess with a clearance. Such play can particularly advantageously influence the force transmission. In particular, the hook element is part of a forged connecting element formed in one piece. The hook element can also be accommodated in the recess without play.The connecting element comprises at least one nose. According to the invention, the lug engages in at least one recess formed in the door base body. This allows a particularly inexpensive and rapid alignment during assembly and also offers a particularly stable support. The recess is preferably arranged in the door inner part and / or in the lock reinforcement. The nose is preferably formed integrally with the connecting element.It is particularly preferred that the connecting element supports a rear end of the shaft reinforcement. Thus, safety will be considerably improved, since the transmission of forces occurring at the rear end of the shaft reinforcement is particularly decisive. The connecting element is arranged in particular in the region of a rear door corner. It is also possible for the connecting element to support a front end of the shaft reinforcement.The connecting element is preferably suitable and designed to transmit a force occurring in the event of a crash, in particular a front crash and preferably a small overlap crash, via the door base body in a longitudinal direction of the door device, so that the force can be introduced, for example, into a substructure of a box shell. This offers a particularly favorable and, for example, parallel alignment of the force direction and of the load path. Thus, a slipping off of the door to the outside can be counteracted particularly effectively. According to the invention, the connecting element is arranged at least in sections between the shaft reinforcement and the door base body in relation to the longitudinal direction of the door device.The box body shell is in particular part of a body structure of a motor vehicle, on which the door base body is arranged. It is also possible for the vehicle door device to comprise at least one such body structure.The connecting element is preferably suitable and designed to transmit a force to an outer wall of the shaft reinforcement by means of a torque occurring in the event of a crash, in particular a front crash and preferably a small overlap crash. By means of such a force transmission, the door can be held in the door shaft in a particularly reliable manner in the event of a crash event. The outer wall is in particular oriented in the direction of an operational outer side of the vehicle door device. Particularly preferably, the force is transmitted through the hook element to the outer wall as a result of the torque that occurs. The hook element is in particular pivotable by the torque.The motor vehicle according to the invention is designed in particular as a passenger car and comprises at least one vehicle door device as has been described above.The motor vehicle according to the invention also offers many advantages and offers a particularly high degree of safety for the occupants.The motor vehicle comprises in particular at least one body structure with at least one box shell with at least one substructure. The vehicle door device, in particular the door base body, is pivotably fastened in particular to the body structure and preferably to a box body shell.The shaft reinforcement is in particular designed as a carrier and / or a strut or the like or comprises at least one such strut. The shaft reinforcement connects in particular two lateral sections of the door inner part. In particular, the shaft reinforcement is suitable and designed to stiffen the door base body and preferably the door inner part. The shaft reinforcement is in particular not a forged part. The shaft reinforcement is in particular designed as a sheet metal body or the like. However, it is also possible for the shaft reinforcement to be at least partially forged.The shaft reinforcement and the connecting element are in particular configured as separate components. The door base body can be equipped with at least one side impact strut. The shaft reinforcement does not correspond in particular to a side impact strut.The shaft reinforcement is arranged in particular at least in sections along an upper flange edge. In particular, a shaft opening is arranged in the region of the upper flange. In particular, the door base body comprises at least one window compartment with at least one compartment opening for receiving a retractable window pane. It is also possible for the shaft reinforcement to be arranged in the region of another side edge and / or in the region of another section of the door base body.The vehicle door device is preferably designed as a rear vehicle door or comprises at least one such door. It is also possible and preferred for the vehicle door device to be designed as a front vehicle door or to comprise at least one such vehicle door.According to the invention, supporting the shaft reinforcement is preferably understood to mean a connection via which forces can be introduced in a targeted manner from the shaft reinforcement into the door base body, preferably in the event of a crash.Further advantages and features of the present invention result from the exemplary embodiment which is explained below with reference to the accompanying figure.The figures show: FIG. 1 shows a purely schematic illustration of a vehicle door device according to the invention in a partially transparent side view onto the outer side; FIG. 2 shows a detailed view of the vehicle door device of FIG. 1 in a perspective and partially transparent illustration; FIG. 3 shows a further detail view of the vehicle door device of FIG. 1 in a perspective illustration; and FIG. 4 shows a purely schematic illustration of a motor vehicle with a vehicle door device in a perspective and cut-away view obliquely from above.FIG. 1 shows a vehicle door device 1 according to the invention, as can be used, for example, on a motor vehicle according to the invention. The surrounded region is shown in an enlarged manner in FIG. 2.The vehicle door device 1 is designed here as a door 11, for example as a rear door or as a front door or front door. The door 11 is provided with a side impact strut 31 here.The vehicle door device 1 comprises a door base body 2, which here has an inner door part 12 and a lock reinforcement 22. The lock reinforcement 22 stiffens the door inner part 12 in the region of a door lock device, not shown in more detail here. The door inner part 12 is provided here by a sheet metal body and serves, for example, for receiving an outer door skin, not shown, or an inner door trim and / or other corresponding door components.The door inner part 12 is equipped with a window compartment for receiving a retractable window pane. The window compartment has a compartment opening 13 in the region of an upper edge for the retraction and extension of the window pane.The door inner part 12 is reinforced in the region of the shaft opening 13 with a shaft reinforcement 3, which is designed here as a strut or as a carrier. The shaft reinforcement 3 extends here along the upper rim and is connected at its ends to the door inner part 12 or the lock reinforcement 22.At a rear end 33, the shaft reinforcement 3 is supported on the door base body 2 via a forged connecting element 4. The connecting element 4 is formed here as a solid forged part 14.The connecting element 4 is provided here with threaded sections 24 for receiving screw connection means 21 and, for example, screws. A screw is screwed into a threaded section 24 here, which screw fixes the shaft reinforcement 3 to the connecting element 4. In addition, at least two further threaded sections 24 are provided here, into which screws for fastening the door inner part 12 or the lock reinforcement 22 are screwed.For example, the screws are provided to fasten the connecting element 4 together with the lock reinforcement 22 to the door inner part 12. The connecting element 4 can also be screwed directly to the lock reinforcement 22 or to the door inner part 12.The connecting element 4 is provided here with a forged hook element 34. The hook element 34 engages here in a circumferentially closed recess 23 of the shaft reinforcement 3. The recess 23 here has play with respect to the hook element 34.The hook element 34 or the recess 23 are configured here such that the hook element 34 can block or catch a movement of the shaft reinforcement 3 along its longitudinal axis. Such a movement can be effected, for example, by the forces occurring during a frontal impact. Thus, the shaft reinforcement 3 is initially movable during the course of the game during a rearward movement and is subsequently captured by the hook element 34.The connecting element 4 is also provided here with a forged lug 44 which engages in a recess 32 of the door inner part and in a recess 32 of the lock reinforcement 22 aligned correspondingly thereto.FIG. 3 shows a detail of FIG. 2 from another perspective. For better clarity, the lock reinforcement 22 and a part of the door inner part 12 are not shown here. As a result, the connecting element 4 and its arrangement on the shaft reinforcement 3 can be seen particularly well. The threaded sections 24 are covered here by the screw connection means 21.FIG. 4 shows a detail of a motor vehicle 100 embodied as a passenger car 101. The motor vehicle 100 is equipped here with a vehicle door device 1 according to the invention, as is described, for example, with reference to FIGS. 1 to 3.The door 11 is arranged here in terms of operation on a box shell 102 of a body structure of the motor vehicle 100. The arrangement is shown with a closed door 11.To clarify the mode of operation and the advantages of the invention, the forces 200, 201 occurring in the event of a crash are shown in a greatly simplified manner here. In the event of a small overlap crash or an accident-induced impact in a lateral front region, a considerable introduction of force into the vehicle body and door regions lying behind it can occur. The shaft reinforcement 3 plays a considerable role here, since it can transmit the corresponding forces 200, 201 to the rear.The connecting element 4 is arranged here in relation to the longitudinal direction of the door device 1 between the shaft reinforcement 3 and the door base body 2. As a result, the forces introduced in the event of a crash are transmitted from the shaft reinforcement 3 via the connecting element 4 to the structures lying behind it.Due to the support according to the invention of the shaft reinforcement 3 with the forged connecting element 4, the shaft reinforcement 3 strikes the connecting element 4 in the event of a crash. The connecting element 4 then applies the introduced force 200 via the door inner part 12 and the lock reinforcement 22 to a substructure 103 of the box shell 102. The forged connecting element 4 does not deform, so that the force 200 can be introduced into the substructure 103 in a targeted manner.The arrangement according to the invention of the components 3, 12, 22 on the forged connecting element 4 thereby offer the advantage that a load path 202 runs substantially parallel to the direction of the force 200. As a result, the door 11 does not slide outwards or does not protrude laterally from the box shell 102. The force 200 can therefore be passed on to the substructure 103 in a targeted manner.In addition, the connecting element 4 enables a transmission of the force 201 to an outer wall 43 of the shaft reinforcement 3. For example, in the event of a crash, the hook element 34 pivots within the recess 23 and in the process presses against the outer wall 43.The invention presented here offers considerable advantages over other types of connection of the shaft reinforcement 3 and, for example, over folded parts or sheet metal parts for fastening the shaft reinforcement 3. As a result, the forces which occur cannot be introduced into the substructure of the box shell and the door slips off outwards. This can significantly impair the protective effect of the passenger compartment. The invention presented here avoids these disadvantages and the safety of the vehicle door device 1 or of the motor vehicle 100 is improved considerably.List of reference numbers:1 Vehicle door device 2 Door base body 3 Shaft reinforcement 4 Connecting element 11 Door 12 Door inner part 13 Shaft opening 14 Forged part 21 Screw connection means 22 Lock reinforcement 23 Recess 24 Threaded portion 31 Side impact strut 32 Recess 33 End 34 Hook element 43 Wall 44 Nose 100 Motor vehicle 101 Passenger vehicle 102 Box shell 103 Substructure 200 Force 201 Force 202 Load path

Claims

Vehicle door device (1), in particular for a passenger vehicle (101), having at least one door base body (2) and having at least one shaft reinforcement (3) for reinforcing the door base body (2) in the region of at least one shaft opening (13), characterized in that the shaft reinforcement (3) is supported on the door base body (2) by means of at least one forged connecting element (4) arranged at least in sections between the shaft reinforcement and the door base body with respect to the longitudinal direction of the vehicle door device (1), and in that the connecting element (4) is formed in one piece and comprises at least one hook element (34) and at least one lug (44), and in that the hook element (34) engages in at least one recess (23) formed in the shaft reinforcement (3), and in that the lug (44) engages in at least one recess (32) formed in the door base body (2).Vehicle door device (1) according to the preceding claim, wherein the connecting element (4) is formed as a solid forged part (14).Vehicle door device (1) according to one of the preceding claims, wherein the shaft reinforcement (3) is fastened and preferably screwed directly to the connecting element (4).Vehicle door device (1) according to one of the preceding claims, wherein the door base body (2) comprises at least one door inner part (12) and at least one lock reinforcement (22) arranged on the door inner part (12), and wherein the connecting element (4) is fastened to the lock reinforcement (22) and / or wherein the connecting element (4) is fastened to the door inner part (12) together with the lock reinforcement (22).Vehicle door device (1) according to one of the preceding claims, wherein the connecting element (4) comprises at least one threaded section (24) for receiving at least one screw connection means (21).Vehicle door device (1) according to one of the preceding claims, wherein the connecting element (4) supports a rear end (33) of the shaft reinforcement (3).Vehicle door device (1) according to one of the preceding claims, wherein the connecting element (4) is suitable and designed to transmit a force (200) occurring in the event of a crash via the door base body (2) in a longitudinal direction of the door device (1), such that the force (200) can be introduced, for example, into a substructure (103) of a box shell (102).Vehicle door device (1) according to one of the preceding claims, wherein the connecting element (4) is suitable and designed to transmit a force (201) to an outer wall (43) of the shaft reinforcement (3) by means of a torque which occurs in the event of a crash.Motor vehicle (100), in particular passenger motor vehicle (101), comprising at least one vehicle door device (1) according to one of the preceding claims.

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