Stabilizer assembly for the chassis of a motor vehicle

Abstract

Stabilizer arrangement (1) for a chassis of a motor vehicle with at least one actuator (6) which compensates vehicle movements wholly or partially in the area of ​​a wheel suspension connected to the stabilizer arrangement (1), wherein the actuator (6) can be controlled via flexible lines (2, 3, 4), characterized in that the flexible lines (2, 3, 4) are guided from a central control unit via openings (12, 13, 14) arranged in the stabilizer bearing (7) to the actuator (6) which interacts with a stabilizer (8), wherein the flexible lines (2, 3, 4) are arranged helically around the stabilizer (8) and actuation of the actuator (6) causes a change in the diameter of the helix.

Description

[0001] The invention relates to a stabilizer arrangement for a chassis of a motor vehicle with at least one actuator that compensates vehicle movements wholly or partially in the area of ​​a wheel suspension connected with the stabilizer arrangement, wherein the actuator can be controlled via flexible lines.

[0002] The routing of flexible hydraulic and electrical lines in a motor vehicle is particularly problematic in the area of ​​the vehicle axles and wheel suspension, as vehicle components such as wheels and suspension systems undergo considerable relative movements with respect to the surrounding vehicle parts during operation. For safe vehicle operation, it is essential to protect the installed lines not only from damage caused by external objects impacting the vehicle, such as stones, but also, and especially, from damage caused by such relative movements or by friction against other vehicle parts. Routing lines is particularly challenging in vehicles equipped with systems designed to fully or partially compensate for movements around the longitudinal, lateral, and / or vertical axes.To achieve this compensation, actuators are installed in the chassis area. These actuators are controlled hydraulically and / or electrically via flexible supply lines routed within the chassis area, by a control unit usually located centrally in the vehicle. Such lines are particularly susceptible to the aforementioned relative movements. They are also vulnerable because they must be positioned relatively close to the ground and in the immediate vicinity of the rotating wheels.

[0003] From DE 10 2008 041 329 A1, a stabilizer arrangement is known in which a line runs helically to the longitudinal axis of the stabilizer over a certain length segment. It is less advantageous in the previously known stabilizer arrangement that only one line runs to the actuator or that several lines are combined into one line, since such a combination of lines results in a lack of flexibility.

[0004] DE 10 2007 040 185 A1 relates to a wheel suspension for roll control for a motor vehicle, with at least one wheel suspension device for each pair of opposing wheels, which are connected by a split stabilizer with a built-in electromechanical actuator for rotating the two stabilizer parts relative to each other, wherein each of the stabilizer parts is rotatably attached to a sprung part of the motor vehicle by at least one fastening device, which has a progressively increasing spring characteristic for each of the two stabilizer parts.

[0005] A torsion bar spring according to DE 10 2010 053 732 A1 for a vehicle has a curved, essentially tubular component that forms a torsion spring. The tubular component is made of a fiber-reinforced plastic material. At at least one end of the tubular component, this tubular component overlaps a second component, at least partially. The second component has a thread in the overlapping area, which is positively enclosed by the material of the tubular component.

[0006] The present invention is based on the objective of proposing a routing system for a stabilizer arrangement for the chassis of a motor vehicle that ensures high protection against damage caused by relative movements of the vehicle as well as by external influences and also enables the shortest possible, most direct routing paths in the vehicle.

[0007] This problem is solved by the features of claim 1. It is provided that the flexible lines are guided from a central control unit, via openings arranged in the stabilizer bearing, to the actuator interacting with a stabilizer, wherein the flexible lines are arranged helically around the stabilizer and actuation of the actuator causes a change in the diameter of the helix. The diameter of the helix corresponds at most to the diameter of the actuator in order to enable a particularly space-saving arrangement.

[0008] The invention provides that the flexible conductors are designed as electrical conductors and the compensating actuator is an electromechanical actuator. To maximize flexibility, the flexible electrical conductors are individually shielded and routed separately. This achieves greater flexibility than routing the conductors in a common conductor, where a shared shield results in a rigid conductor assembly.

[0009] A particularly advantageous embodiment of the invention provides for a further flexible line which is guided through the stabilizer bearing and arranged helically around the stabilizer. According to the invention, this further flexible line is an electrical signal line connected to a sensor and transmitting the output signals of this sensor to a control unit.

[0010] The openings in the stabilizer bearing are designed to be arranged side by side, essentially below and / or above the stabilizer when viewed vertically. Alternatively, these openings are arranged one above the other, essentially on the left and / or right side of the stabilizer when viewed vertically.

[0011] The present invention will be explained in more detail with reference to an exemplary embodiment. The drawing shows: Fig. 1 a top view of the stabilizer arrangement according to the invention; Fig. 2 compared to Fig. 1 Tilted representation of the stabilizer arrangement according to the invention.

[0012] In the Fig. Figure 1 shows a top view of the stabilizer arrangement according to the invention. The stabilizer arrangement 1 has an actuator 6 which is connected to a stabilizer 8. Vehicle movements are transmitted to the actuator 6 via the stabilizer 8, the actuator being designed to perform a rotational movement. This rotational movement absorbs the forces resulting from the vehicle movement. For this purpose, the stabilizer 8 is connected to the vehicle body and is guided by a stabilizer bearing 7 and connected to the actuator 6. The actuator 6 is an electromechanical actuator. Accordingly, the supply lines for the actuator 6 are designed as electrical lines. The arrangement proposed below is not feasible with a hydraulic actuator and hydraulic supply lines, since hydraulic lines or hoses cannot be routed in sufficiently small radii.

[0013] As the Fig. As can be seen from section 1, not only is a potentially multi-phase electrical supply line provided for the actuator 6, but a total of three flexible lines 2, 3, 4. In the prior art, several supply lines are routed within a single common line. This has the disadvantage that a single line does not offer sufficient flexibility. The flexible lines 2, 3, 4 are individually arranged in a helical shape around the stabilizer 8, starting from the actuator 6. For this purpose, the flexible lines 2, 3, 4 are individually shielded against external electromagnetic interference. The electromechanical actuator is designed as a brushless DC motor, and the flexible electrical lines 2, 3, 4 are each assigned to one phase U, V, W of the brushless electric motor.

[0014] When the actuator 6 rotates, the diameter of the helix of the helically arranged, flexible cables 2, 3, 4 changes. The change in the diameter of the helix is ​​caused by a change in the length of the flexible cables 2, 3, 4.

[0015] How it looks Fig. As can be seen in Figure 1, the flexible cables 2, 3, 4 are guided through openings 12, 13, 14 located in the stabilizer bearing 7. A further cable, configured as a sensor cable 5 in this embodiment, is guided through another opening 15 in the stabilizer bearing 7. The stabilizer bearing 7 is made of a rubber-elastic material. The flexible cables 2, 3, 4 guided through the stabilizer bearing 7 are then routed to a central control unit (not shown), which is designed as an electrical control unit. The openings 12, 13, 14, and 15 in the stabilizer bearing 7 are arranged either side by side, essentially below and / or above the stabilizer 8 when viewed in the vertical direction of the vehicle, or one above the other, essentially to the left and / or right of the stabilizer 8 when viewed in the vertical direction of the vehicle.

[0016] The essential inventive concept is that a total of three flexible lines 2, 3, 4 are used to supply the actuator 6, wherein the flexible lines 2, 3, 4 are arranged helically around the stabilizer 8 and are subsequently guided through openings 12, 13, 14 in the stabilizer bearing 7.

[0017] The Fig. 2 is one of the Fig. A corresponding representation was chosen, whereby a slightly different viewing angle clarifies that the flexible lines 2, 3, 4 are laid helically around the stabilizer 8. Based on the Fig. Figure 2 further clarifies that a rotational movement of the actuator 6 leads to a change in the diameter of the helical shape. As can be seen from the Fig. As can be seen in Figure 2, the combination of the helical routing of the flexible cables 2, 3, 4 and their subsequent routing through the openings 12, 13, 14 in the stabilizer bearing 7 results in a compact and well-protected cable routing. This routing also offers acoustic advantages, as the cables 2, 3, 4 cannot strike other components and therefore no noise is generated.

[0018] In the Fig. 1 and Fig.2. The openings 12, 13, 14 in the stabilizer bearing 7 are arranged essentially one above the other when viewed vertically in the vehicle direction. It is evident that the openings 12, 13, 14 can be arranged one above the other either on the left or right side of the stabilizer 8. It is equally evident that the openings 12, 13, 14 can be arranged side by side essentially below and / or above the stabilizer 8 when viewed vertically in the vehicle direction.

[0019] The routing of a total of three electrical lines 2, 3, 4 through openings 12, 13, 14 in the stabilizer bearing 7 and the helical routing of the flexible electrical lines 2, 3, 4 around the stabilizer 8 offers a particularly advantageous solution for connecting an actuator 6 to a central control unit.

Claims

[1] Stabilizer arrangement (1) for a chassis of a motor vehicle with at least one actuator (6) which compensates vehicle movements wholly or partially in the area of ​​a wheel suspension connected with the stabilizer arrangement (1), wherein the actuator (6) can be controlled via flexible lines (2, 3, 4), characterized by , that the flexible lines (2, 3, 4) are guided from a central control unit via openings (12, 13, 14) arranged in the stabilizer bearing (7) to the actuator (6) which interacts with a stabilizer (8), wherein the flexible lines (2, 3, 4) are arranged helically around the stabilizer (8) and actuation of the actuator (6) causes a change in the diameter of the helix. [2] Stabilizer arrangement (1) according to claim 1, characterized by , that the flexible lines (2, 3, 4) are electrical lines and the compensating actuator (6) is an electromechanical actuator. [3] Stabilizer arrangement (1) according to claim 2, characterized by , that the flexible electrical conductors (2, 3, 4) are each individually shielded. [4] Stabilizer arrangement (1) according to claim 2 or 3, characterized by , that the electromechanical actuator is designed as a brushless DC motor and the flexible electrical conductors (2, 3, 4) are each assigned to one phase (U, V, W) of the brushless electric motor. [5] Stabilizer arrangement (1) according to any one of the preceding claims, characterized by , that a further flexible line (5) is provided which is guided through the stabilizer bearing (7) and is arranged helically around the stabilizer (8). [6] Stabilizer arrangement (1) according to claim 5, characterized by , that the further flexible line (5) is an electrical signal line connected to a sensor. [7] Stabilizer arrangement (1) according to any one of the preceding claims, characterized by, that the openings (12, 13, 14) are arranged side by side essentially below and / or above the stabilizer (8) when viewed in the vehicle's vertical direction. [8] Stabilizer arrangement (1) according to any one of claims 1 to 7, characterized by , that the openings (12, 13, 14) are arranged one above the other essentially on the left and / or right side of the stabilizer (8) when viewed in the vertical direction of the vehicle.

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