Door frame of a motor vehicle door and crash pad

Abstract

Door frame of a motor vehicle door, with an end area (30) facing a fender (5), characterized in that a crash pad (14) is attached in the end area (30) to the door frame (8), which reduces the fender (5) being pushed behind the door.

Description

[0001] The invention relates to a door frame of a motor vehicle door, having an end region facing a fender. The invention further relates to a motor vehicle having a fender and a motor vehicle door comprising such a door frame. The invention further relates to a crash pad for such a door frame.

[0002] The German patent application DE 10 2008 062 504 A1 discloses a protective device for a door of a motor vehicle, in particular a passenger car, with at least one device for extending a door-side region of a body part adjacent to the door, in particular a fender, before and / or during an accident-related force application.The German patent application DE 103 28 455 A1 discloses a safety device for a vehicle body of a motor vehicle with load-bearing body components and an outer panel, wherein one end of an outer panel part is arranged adjacent to a vehicle door, and a connecting element arranged between the outer panel part and the load-bearing body parts, wherein a guide element with a sliding surface is provided, which is supported on load-bearing body components and is arranged in the vehicle body such that the outer panel part is guided in the event of an impact such that it slides over the vehicle door.The German patent application DE 10 2004 059 476 A1 discloses a motor vehicle with a fender which, viewed in the direction of travel, is connected laterally to a supporting body of the motor vehicle in the rear area via a holder, wherein the fender is pushed backwards in the event of a crash, the holder is plastically deformed in such a way that the distance between the fender and the supporting body in the transverse direction of the vehicle increases in the area of ​​the holder, so that the fender is pushed with its rear edge in front of a side door which is adjacent to the fender at the rear in the direction of travel, viewed from the outside of the vehicle.The German patent specification DE 20 53 151 B discloses a fastening of the front fender of a motor vehicle, the rear edge of which or the edge of a rear fender extension is immediately adjacent to the front edge of the door and lies approximately in the same plane, wherein the fender or its extension is fastened to another body part, for example the door post, via a web or the like, wherein the supporting edge of the web or the like on the body is located behind the supporting edge on the fender or on its extension, viewed in the direction of travel.The German patent application DE 10 2005 027 373 A1 discloses a motor vehicle with a front fender, wherein the fender has a weakening at least approximately over the entire height of the fender substantially perpendicular to the longitudinal extent of the vehicle, so that buckling of the fender in the transverse direction of the vehicle is facilitated if the fender is pushed backwards in the front area in the event of an accident.

[0003] The object of the invention is to simplify the opening of a vehicle door after an extreme load, such as occurs in an accident or crash.

[0004] The problem is solved in the case of a door frame of a motor vehicle door with an end region facing a fender in that a crash pad is attached to the end region of the door frame, which crash pad prevents the fender from being pushed behind and underneath the door. Normally, the fender is spaced apart from an outer skin of the motor vehicle door by a certain gap. In the event of a collision or crash, enormous forces act on the fender, which can cause the fender, viewed from the outside, to slide under or behind the outer skin of the door and / or the door frame and become caught. This can then make it difficult or impossible to open the motor vehicle door. The crash pad according to the invention can easily prevent the fender from being pushed behind and underneath the door from the outside to the inside. The crash pad is preferably a plastic part, made for example from polyoxymethylene (POM).To attach the crash pad to the door frame, a metal bushing can be embedded in the plastic material. The crash pad is preferably designed as a plastic injection-molded part. During assembly of the vehicle, the crash pad is inserted and fastened to the door frame, for example with the help of fastening screws. The crash pad is particularly advantageously attached to the door frame together with a window guide. After the crash pad has been attached, a seal for the window guide can be fitted. The crash pad has a length of approximately 50, a width of 40, and a height of 45 millimeters. The crash pad is particularly advantageously attached to the door frame of a front vehicle door in an end area facing a front fender of the vehicle. The crash pad can significantly reduce the force required to open the door after a frontal collision.

[0005] A preferred embodiment of the door frame is characterized in that the crash pad has a stop surface facing an edge of the fender. The edge on the fender is preferably slightly rounded. The stop surface reduces and / or stops movement of the fender in the event of a collision or crash.

[0006] A further preferred embodiment of the door frame is characterized in that the stop surface is arranged substantially perpendicular to an outer skin of the motor vehicle door. The stop surface is particularly advantageously provided in a recess of the crash pad.

[0007] A further preferred embodiment of the door frame is characterized in that the stop surface is provided on a stop leg that extends from a base body of the crash pad to the outer skin of the motor vehicle door. The stop leg is particularly advantageously supported on a curve or curvature of the door frame in order to transmit the forces occurring in an accident or crash, which are transmitted from the fender, via the crash pad into the door frame. The crash pad can deform particularly advantageously to absorb or convert impact energy.

[0008] A further preferred embodiment of the door frame is characterized in that a web projecting from the base body, together with the stop surface and a door edge region facing the fender edge, forms an elongated catch recess for the fender edge. The catch recess has the shape of an elongated depression, the bottom of which is formed by the stop surface. The catch recess prevents the fender or fender edge from sliding past the crash pad behind or under the vehicle door or door frame when enormous forces are applied to the fender in the event of an accident or crash.

[0009] Another preferred embodiment of the door frame is characterized in that a mounting flange with a through hole is angled from the base body. A metal bushing can be inserted into the crash pad in the area of ​​the through hole. The mounting flange serves to attach the crash pad to the door frame. Preferably, three through holes are provided on the crash pad, which serve to secure the crash pad, for example, using fastening screws.

[0010] Another preferred embodiment of the door frame is characterized by the fact that three holes are provided on the door frame for attaching the crash pad. Using suitable fastening means, such as screws, the crash pad can be securely attached to the door frame.

[0011] Another preferred embodiment of the door frame is characterized in that the crash pad is attached to the door frame together with a window guide. The window guide serves to guide a door pane and is preferably equipped with a suitable window seal.

[0012] The invention further relates to a motor vehicle having a fender and a motor vehicle door comprising a door frame as described above. The motor vehicle door is preferably a front motor vehicle door with a front end region facing a front fender and to which the crash pad according to the invention is attached. Crash pads are particularly advantageously attached to both sides, i.e., the right and left, of the front motor vehicle doors. If necessary, similar crash pads can also be attached to the rear motor vehicle doors or to the rear of the front motor vehicle doors.

[0013] The invention further relates to a crash pad for a door frame as described above, in particular for a motor vehicle as described above. The crash pad is preferably made of a deformable plastic material.

[0014] Further advantages, features, and details of the invention will become apparent from the following description, which describes an embodiment in detail with reference to the drawings. They show: Fig. 1 a perspective view of a motor vehicle with a fender, a door frame and an A-pillar from the outside; Fig. 2 the view of a section along the line II in Fig. 1; Fig. 3 the view of a section along the line III in Fig. 1; Fig. 4 a perspective view of an end region of the fender from Fig. 1 and Fig. 5 a perspective view of a crash pad, which, as can be seen in the Fig. 1 to 3, is attached to the door frame.

[0015] In the Fig. 1 to 3, a motor vehicle 1 with a supporting structure 2 is shown in various views or sections. The supporting structure 2 comprises an A-pillar 4, a fender 5, and a door frame 8. The fender 5 is a front fender. The door frame 8 is the door frame of a front motor vehicle door.

[0016] A window guide 10 and a crash pad 14 are attached to the door frame 8. The crash pad 14 prevents the fender 5 from accidentally sliding back under the door in a frontal collision. This significantly reduces the force required to open the door after a frontal collision. During installation, the crash pad 14 is inserted and screwed into place. A seal for the window guide 10 is then installed.

[0017] In the Fig. 2 and Fig. 3 shows that the motor vehicle door is delimited on the outside by an outer door skin 16, which is attached to the door frame 8. In Fig. 3 you can see that the front fender 5 extends in extension of the outer door skin.

[0018] An arrow 19 indicates a force applied to the fender 5 in a frontal crash or head-on collision. Further arrows indicate a distance 18 provided between the A-pillar 4 and the crash pad 14. The distance 18 is preferably at least 6 millimeters.

[0019] During normal operation, an edge 21 of the fender 5 is spaced from an opposite edge of the outer door skin 16 by a suitable gap. In a frontal collision, the edge 21 of the fender 5 moves toward the crash pad 14 in the direction of the force 19.

[0020] A stop surface 24 is formed on the crash pad 14, onto which the edge 21 strikes. The stop surface 24 is arranged perpendicular to the outer door skin 16 and is formed on a stop leg 25 of the crash pad 14. The stop leg 25 extends from a base body 26 of the crash pad 14 and rests against a curved or arched area of ​​the door frame 8.

[0021] The base body 26 is made of a thermoplastic material, such as POM, and is designed as an injection-molded part. An elongated web 27 is angled from the stop leg 25, preventing the edge 21 of the fender 5 from moving further inward past the crash pad 14 in an undesirable manner.

[0022] The elongated web 27, together with the end of the outer door skin 16 facing the edge 21 of the fender 5, defines a catch recess 28. The catch recess 28 has the shape of an elongated depression, the bottom of which is formed by the stop surface 24.

[0023] In Fig. 4 shows a perspective view of a portion of the door frame 8 with an end region 30 in which the crash pad 14 is attached. In the end region 30, the door frame 8 has three through holes 31 to 33, which serve to attach the crash pad 14 to the door frame 8. The three through holes 31 to 33 are formed in the door frame 8, for example, by laser machining.

[0024] In Fig. Figure 5 shows the crash pad 14 alone in perspective. A mounting flange 40 with a through hole 41 is angled from the base body 26.

[0025] The mounting flange 40 rests against a curved or arched area of ​​the door frame 8 and is secured there, for example, with a fastening screw. The forces acting on the crash pad 14 in the event of a frontal collision can be safely supported on the door frame 8 via the mounting flange 40.

Claims

[1] Door frame of a motor vehicle door, with an end region (30) facing a fender (5), characterized by that in the end region (30) on the door frame (8) a crash pad (14) is attached, which prevents the mudguard (5) from being pushed back under the door. [2] Door frame according to claim 1, characterized by that the crash pad (14) has a stop surface (24) which faces an edge (21) of the fender (5). [3] Door frame according to claim 2, characterized by that the stop surface (24) is arranged perpendicular to an outer skin (16) of the motor vehicle door. [4] Door frame according to claim 3, characterized by that the stop surface (24) is provided on a stop leg (25) which extends from a base body (26) of the crash pad (14) to the outer skin (16) of the motor vehicle door. [5] Door frame according to claim 4, characterized bythat a web (27) projecting from the base body, together with a door edge region facing the fender edge (21), forms an elongated catch recess (28) for the fender edge (21). [6] Door frame according to claim 4 or 5, characterized by that a fastening flange (40) is angled from the base body (26) and has a through hole (41). [7] Door frame according to one of the preceding claims, characterized by that three holes (31-33) are provided on the door frame (8) for attaching the crash pad. [8] Door frame according to one of the preceding claims, characterized by that the crash pad (14) is attached to the door frame (8) together with a window guide (10). [9] Motor vehicle with a fender (5) and a motor vehicle door comprising a door frame (8) according to one of the preceding claims. [10] Crash pad on a door frame (8) according to one of claims 1 to 8.

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