Auxiliary frame for a vehicle
A subframe for a vehicle, with a unit mounting, in which a unit support is pivotably connected to a unit bearing on the subframe about a bearing axis. The unit bearing is axially fastened on both sides to a respective bracket wing of a bearing bracket of the subframe. The unit bearing is arranged in an inner corner region of the subframe, at which a first subframe member and a second subframe member converge. One of the bracket wings is formed directly by a wall of the first subframe member.
1 . A subframe for a vehicle, with a unit bearing, in which a unit support is pivotably connected to a unit bearing on the subframe about a bearing axis, wherein the unit bearing is axially fastened on both sides to a respective bracket wing of a bearing bracket of the subframe, wherein the unit bearing is arranged in an inner corner region of the subframe at which a first subframe member and a second subframe member converge, and wherein one of the bracket wings is formed directly by a wall of the first subframe member, wherein the first subframe member is a hollow member which delimits a cavity which is closed in the hollow member cross section by means of a hollow member wall, and/or in that the first subframe member has an access opening on its frame outer side via which the unit bearing can be mounted/dismounted.
2 . The subframe according to claim 1 , wherein the other bracket wing is designed as a separate bracket wing component which is connected to the second subframe member, wherein the bracket wing component is spaced from the first subframe member via a bearing space in which the unit bearing is arranged, and wherein the first subframe member is a subframe cross member and the second subframe member is a subframe longitudinal member.
3 . A subframe for a vehicle, the subframe comprising a first unit mounting, in which a unit support is pivotably connected to a unit bearing on the subframe about a bearing axis which is defined by a bearing pin which is mounted axially on both sides of the unit bearing in a bracket wing of a bearing bracket of the subframe, wherein at least one of the bracket wings is designed as a U-profile part with a base wall in which the bearing pin is mounted, and with support legs angled therefrom and which support the base wall relative to the subframe, wherein the bracket wing is connected to the subframe at its base wall bottom edge and at its support leg bottom edge by a weld, and in that the base wall is triangular in shape, namely with base wall peripheral edges which converge in a triangular shape at a rounded base wall vertex, in the region of which a bearing opening for the bearing pin is formed;
the subframe comprising a second unit mounting, a first longitudinal member on a first side of the subframe, and a second longitudinal member on a second side of the subframe opposite the first side, wherein the first unit mounting is located closer to the first side than the second side and wherein the second unit mounting is located closer to the second side than the first side; and
the subframe further comprises a subframe cross member extending between the first longitudinal member and the second longitudinal member in a direction parallel to the bearing axis, wherein each of the first unit mounting and the second unit mounting abuts the subframe cross member, and wherein the first unit mounting and the second unit mounting are asymmetrical from one another.
4 . The subframe according to claim 3 , wherein at least one of the support legs is extended with a tab which projects beyond the base wall bottom edge with a projection, and in that the base wall bottom edge is connected to a frame inner side of the subframe and the support leg tab is connected to a frame upper side or frame lower side.
5 . The subframe according to claim 3 , wherein the two support legs are not parallel to each other, but are inclined towards each other in the direction of the base wall apex, thereby resulting in a compact and component-rigid bracket wing geometry, and/or in that the bracket wing is a formed sheet metal part.
6 . A subframe, with a unit mounting, in which a unit support is pivotably connected to a unit bearing on the subframe about a bearing axis which is defined by a bearing pin which is mounted axially on both sides of the unit bearing in a bracket wing of a bearing bracket of the subframe, wherein a subframe member, namely a subframe cross member or a subframe longitudinal member, is formed by cross-section reduction of the subframe member, with a trough-shaped mounting recess in which the bracket wings are arranged, wherein the subframe member is a hollow member which delimits a cavity which is closed in the hollow member cross section by means of a hollow member wall in which the trough-shaped mounting recess is formed, and wherein the hollow member wall has a rectangular cross section in which an upper horizontal hollow member top wall and a lower horizontal hollow member bottom wall are connected at transition edges to vertical hollow member side walls, wherein the contour of one of the transition edges is interrupted by the trough-shaped mounting recess, and in that a trough bottom of the mounting recess merges at a recess edge into the side wall and into the bottom or top wall of the subframe member.
7 . The subframe according to claim 4 , wherein the two support legs are not parallel to each other, but are inclined towards each other in the direction of the base wall apex, thereby resulting in a compact and component-rigid bracket wing geometry, and/or in that the bracket wing is a formed sheet metal part.
8 . The subframe according to claim 1 , wherein the subframe further comprises a unit mounting in which a second unit support is pivotably connected to a second unit bearing on the subframe about a second bearing axis which is defined by a bearing pin which is mounted axially on both sides of the second unit bearing in a respective second bracket wing of a second bearing bracket of the subframe.
9 . The subframe according to claim 8 , wherein at least one second bracket wing of the respective second bracket wings is designed as a U-profile part with a base wall in which the bearing pin is mounted, and with support legs angled therefrom and which support the base wall relative to the subframe, wherein the at least one second bracket wing is connected to the subframe at a base wall bottom edge and at a support leg bottom edge, wherein the base wall is triangular in shape with base wall peripheral edges which converge in a triangular shape, wherein a bearing opening for the bearing pin is formed in a region of the triangular shape.
10 . The subframe according to claim 9 , wherein the at least one second bracket wing is connected to the subframe by welding, and wherein the triangular shape has a rounded base wall vertex.
11 . The subframe according to claim 8 , wherein at least one of the support legs is extended with a tab which projects beyond the base wall bottom edge with a projection.
12 . The subframe according to claim 11 , wherein the base wall bottom edge is connected to a frame inner side of the subframe and the support leg tab is connected to a frame upper side or frame lower side.
13 . The subframe according to claim 8 , wherein the two support legs are not parallel to each other, but are inclined towards each other in the direction of the base wall apex, thereby resulting in a compact and component-rigid bracket wing geometry.
14 . The subframe according to claim 8 , wherein the at least one second bracket wing is a formed sheet metal part.
15 . The subframe according to claim 1 , wherein the subframe further comprises a unit mounting in which a second unit support is pivotably connected to a second unit bearing on the subframe about a second bearing axis which is mounted axially on both sides of the second unit bearing in a respective second bracket wing of a second bearing bracket of the subframe, wherein a subframe member comprising one of a subframe cross member or a subframe longitudinal member is formed by cross-section reduction of the subframe member;
wherein the subframe member further comprises a trough-shaped mounting recess in which the respective second bracket wings are arranged;
wherein the subframe member is a hollow member which delimits a cavity which is closed in the hollow member cross section by a hollow member wall in which the trough-shaped mounting recess is formed, and wherein the hollow member wall has a rectangular cross section in which an upper horizontal hollow member top wall and a lower horizontal hollow member bottom wall are connected at transition edges to vertical hollow member side walls, wherein the contour of one of the transition edges is interrupted by the trough-shaped mounting recess, and wherein a trough bottom of the mounting recess merges at a recess edge into the side wall and into the bottom or top wall of the subframe member.
16 . The subframe according to claim 15 , wherein the two support legs are not parallel to each other, but are inclined towards each other in the direction of the base wall apex, thereby resulting in a compact and component-rigid bracket wing geometry.
17 . The subframe according to claim 15 , wherein the respective second bracket wings are formed sheet metal parts.