Connecting device for a chassis element

Abstract

A connecting device for a chassis element (1) of a motor vehicle with a longitudinal or transverse support (2) of a body structure which is fixed to the body, the chassis element (1) being pivotably connected to the support via a bolt (14), two opposing bearing legs (4, 5) being provided and the bearing legs (4, 5) having receiving bores (7, 8) arranged concentrically to one another, into which rotatable adjusting discs (9, 10) each having an eccentric bearing bore (11, 12) can be inserted, in which a receiving bolt (14) for the chassis element (1) is arranged and is screwed to the bearing legs (4, 5), characterized in that a U-shaped bracket (3) is provided which comprises the two opposing bearing legs (4, 5) with a fastening web (6) for connection to the support (2), the adjusting discs (9,10) are designed in two stages with an inner shoulder (15) and an inner base disc body (16) corresponds to the diameter of the receiving bore (7, 8) in the bearing leg (4, 5) and an outer flange disc body (17) of larger diameter is arranged in a circular ring recess (18) concentric with the receiving bore (7, 8), wherein the bracket (3) for fastening to the carrier (1) has elongated holes (21, 22) in the fastening web (6) which extend vertically and are arranged next to one another at a distance (c).

Description

[0001] The invention relates to a connecting device for a chassis element with a support of a body structure according to the preamble of claim 1.

[0002] DE 10 2009 041 389 A1 discloses a bracket device for a chassis of a motor vehicle, comprising a C-shaped bearing element for a bolt on which the chassis is pivotably mounted. The bearing element has elongated holes for bolts in its legs and bores in its webs, via which the bearing element is adjustably held on the vehicle body. A U-shaped bracket device for attachment to a support with concentrically arranged receiving bores in the bearing legs is known from DE 41 15 110 C2. Two-stage adjusting discs, each with an eccentric bearing bore, are known from DE 10 2004 025 004 A1. Furthermore, DE 100 03 981 C2 discloses an arrangement for the positionally correct connection of components, which arrangement comprises eccentrics arranged in elongated holes.

[0003] A generic connecting device is known from DE 102 57 198 A1, in which the bearing legs are part of the support.

[0004] The object of the invention is to provide a device for connecting a chassis element to a support fixed to the body, such as a cross member or longitudinal member, which ensures a tolerance-free connection of the chassis element to a bolt mounted in a bracket fixed to the support.

[0005] This object is achieved according to the invention by the features of claim 1. Further advantageous features are contained in the subclaims.

[0006] The main advantages achieved by the invention are that a chassis element, such as a wheel guide arm, can be pivoted on a receiving bolt mounted in a console to a support of the vehicle structure in a predetermined spatial desired position on the support and can be connected to the support.This is achieved according to the invention in that a U-shaped bracket is provided which comprises the two opposing bearing legs with a fastening web for connection to the carrier, wherein the adjusting discs are designed in two stages with an inner offset and an inner base disc body corresponds to the diameter of the receiving bore in the bearing leg and an outer flange disc body of larger diameter is arranged in a circular ring recess concentric with the receiving bore, wherein the bracket for fastening to the carrier has elongated holes in the fastening web which extend vertically and are arranged next to one another at a distance. By means of the two-stage adjusting discs which can be rotated in the receiving bores, an adjusting movement is achieved relative to the bracket, by means of which the bracket can be positioned exactly against the carrier by means of a so-called rocking movement and the receiving bolt can assume its desired spatial position.By means of special design of elongated holes, a resulting movement of the console, mainly in the z-direction, after assuming the desired position to the beam can be compensated by means of fastening to the beam via fastening elements in the elongated holes of the fastening web of the console.

[0007] Furthermore, the invention provides for the adjusting disc to be pre-fixed to the receiving bore by means of an adhesive applied to an outer surface of the annular recess and to a corresponding inner surface of the flange disc body. This pre-fixing of the adjusting discs in the bracket simplifies the adjustment process to the desired position, as the adjusting discs can assume a temporary seat in the receiving bores.

[0008] Furthermore, the invention provides that the x, y, and z coordinates of a spatial target position can be specified for the locating pin held in the eccentric bearing bores by means of a temporary adjustment device. The adjustment discs are rotatably mounted on the locating pin, and the mounting bracket of the console can be arranged so that it can swing around the locating pin and rest against the support without a gap. Using this adjustment device or a robot, the locating pin is brought into a spatially correct position, namely the target position relative to the support. For this purpose, the device is referenced to a reference point system.

[0009] An embodiment of the invention is illustrated in the drawings and is described in more detail below.

[0010] They show: Fig. 1 an arrangement of the supports with attached consoles for chassis elements, such as wheel control arms, Fig. 2 a representation of a temporary adjustment device for the consoles with mounting bolts for the chassis elements, Fig. 3 a view of a console with adjusting discs, which can be pre-fixed to the console using an adhesive, Fig. 4 a view of the U-shaped console with an inserted adjusting disc and an adjusting disc in the pre-assembled state, Fig. 5 a front view of the console with adjustment discs, Fig. 6 a view of a console before taking a spatial target position with a gap to the support and Fig. 7 a view of a console in a gap-free spatial position relative to the support.

[0011] A device for connecting a chassis element 1, such as a wheel control arm, to a longitudinal or cross member 2 of a vehicle F fixed to the body, comprises brackets 3 connected to the support 2. These brackets 3 are preferably U-shaped, made of sheet metal or as a cast part, and have two opposing bearing legs 4 and 5 as well as a fastening web 6 for connecting to the support 2. Concentrically arranged receiving bores 7, 8 are provided in the bearing legs 4 and 5, into which rotatable adjusting discs 9, 10, each with an eccentric bearing bore 11, 12, can be inserted. A receiving bolt 14 is inserted into these bearing bores 11, 12 and pivotably receives the chassis element 1. The dimensions for the distances a and b between the supports 1 and the brackets 3 on the support part 1 are specified.

[0012] The adjusting discs 9, 10 are designed in two stages, each with an inner shoulder 15, wherein an inner base disc body 16 corresponds to the diameter of the receiving bores 7, 8. An outer flange disc body 17 has a larger diameter than the base body 16 and the receiving bores 7, 8 and is arranged in a circular ring recess 18 of the bearing legs 4, 5, which in Fig. 4 is shown in more detail.

[0013] For the temporary fixing of the adjusting discs 9, 10 in the receiving bore 7, 8 of the bearing leg 4, 5, an adhesive K is used, which is applied to an outer surface 19 of the circular ring recess 18 and to a corresponding inner surface 20 of the flange body 17, which in Fig. 3 is shown in more detail. Furthermore, the two adjusting discs 9, 10 in the bearing legs 4, 5 are held together by a fastening screw during a dip-coating process.

[0014] For fastening and precise alignment of the console 3 in the z- and slightly in the x-direction to the support 1, elongated holes 21, 22 are provided in the fastening web 6, which extend vertically and are arranged next to one another at a distance.

[0015] A tolerance-free connection of the locating pin 14 and the bracket 3 to the support 2 is achieved by adjusting the locating pin 14 to its spatially correct target position in the x, y, and z directions using an adjustment device 23 or a robot. This is achieved by the receptacles 24 of the device 23 engaging over the locating pin 14 and bringing it into a predetermined target position.

[0016] To ensure that the fastening web 6 fits snugly against the support 2, the bracket 3 is moved in a rocking motion around the locating bolt 14 arranged in the eccentric bearing bore 11, 12, whereby the adjusting discs 9, 10 are slightly adjusted and the gap S ( Fig. 6) between support 2 and console 3 and the fastening web 6 thus rests on the support 2 without a gap, which in Fig. 7 is shown. In Fig. Figure 7 shows the displacement of the adjusting disc 9 with an arrow P (position I) to the gap-free position II. In this position, the bearing bore 11, 12 is positioned without tolerances.

[0017] To fix the adjusting discs 9, 10, a hole circle could be provided on the bracket 3 and the adjusting discs 9, 10 could be fixed at the pre-drilled positions by means of a dowel pin or a small screw.

[0018] The proposed connecting device is not limited to chassis elements, but could also be used for other components such as body parts.

Claims

[1] Connecting device for a chassis element (1) of a motor vehicle with a body-mounted longitudinal or transverse member (2) of a body structure, wherein the chassis element (1) is pivotally connected to the support via a bolt (14), wherein two opposing bearing legs (4, 5) are provided and the bearing legs (4, 5) have receiving bores (7, 8) arranged concentrically to one another, into which rotatable adjusting discs (9, 10) each having an eccentric bearing bore (11, 12) can be inserted, in which a receiving bolt (14) for the chassis element (1) is arranged and screwed to the bearing legs (4, 5), characterized bythat a U-shaped bracket (3) is provided which comprises the two opposing bearing legs (4, 5) with a fastening web (6) for connection to the carrier (2), wherein the adjusting disks (9, 10) are designed in two stages with an inner offset (15) and an inner base disk body (16) corresponds to the diameter of the receiving bore (7, 8) in the bearing leg (4, 5) and an outer flange disk body (17) of larger diameter is arranged in a circular ring recess (18) concentric with the receiving bore (7, 8), wherein the bracket (3) has elongated holes (21, 22) in the fastening web (6) for fastening to the carrier (1), which extend vertically and are arranged next to one another at a distance (c). [2] Connecting device according to claim 1, characterized bythat the adjusting discs (9, 10) can each be pre-fixed to the receiving bore (7, 8) by means of an adhesive (K) applied to an outer surface (19) of the circular ring recess (18) and to a corresponding inner surface (20) of the flange disc body (17). [3] Connecting device according to claim 1 or 2, characterized by in that x, y and z coordinates of a spatial desired position can be specified for the locating pin (14) held in the eccentric bearing bores (11, 12) by means of a temporary adjusting device (23), wherein the adjusting discs (9, 10) are arranged rotatably on the locating pin (14) and the fastening web (6) of the console (3) is arranged so as to be rocking around the locating pin (14) and to lie gap-free against the support (2). [4] Connecting device according to one of the preceding claims, characterized bythat a resulting movement of the console (3) in the z-direction when assuming the spatial desired position to the support (2) can be compensated by means of a connection to the support (2) via fastening means in the elongated holes (21, 22) of the fastening web (6) of the console (3). [5] Connecting device according to one of the preceding claims, characterized in that the seat of the adjusting disc (9, 10) in the receiving bore (7, 8) is conical or spherical and correspondingly the adjusting discs (9, 10) are designed accordingly.

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