# US 11,305,606 B2 · Anti-roll bar for a vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,305,606 B2 - Document ID: US11305606B2 - Status: Granted - Kind: B2 - Application number: 17/140,695 - Filed: 2021-01-04 - Published: 2021-04-29 - Granted: 2022-04-19 - Earliest claimed: 2018-07-12 - Assignees: Ningbo Geely Automobile Research & Development Co. - Applicants: Ningbo Geely Automobile Research & Development Co., Ltd. - Inventors: Andrew Dawkes - Web page: https://patentgrep.com/patent/US11305606B2 ## CPC - B60G 21/0558: {including means varying the stiffness of the stabiliser (B60G21/0556 takes precedence)} - B60G 17/0162: {mainly during a motion involving steering operation, e.g. cornering, overtaking (B60G17/0164 takes precedence)} - B60G 17/025: {the mechanical spring being a torsion spring (B60G17/0277, B60G21/0553 take precedence)} - B60G 21/0556: {including a releasable coupling (B60G21/0555 takes precedence)} - B60G 2202/135: Stabiliser bar and/or tube - B60G 2202/412: Pneumatic actuator - B60G 2202/413: Hydraulic actuator - B60G 2202/422: Linear motor - B60G 2202/44: Axial actuator, e.g. telescopic - B60G 2204/4191: Planetary or epicyclic gears - B60G 2204/421: Pivoted lever mechanisms for mounting suspension elements, e.g. Watt linkage - B60G 2206/427: Stabiliser bars or tubes - B60G 2400/204: Vehicle speed - B60G 2400/41: Steering angle - B60G 2400/60: Load - B60G 2400/62: Seat occupation; Passenger presence - B60G 2500/22: Spring constant - B60G: VEHICLE SUSPENSION ARRANGEMENTS (air-cushion vehicles B60V; {cycle suspensions B62K25/00}) ## Abstract An anti-roll bar for a vehicle. The anti-roll bar includes a first bar portion for connection to a left-side wheel suspension of the vehicle and a second bar portion for connection to a right-side wheel suspension of the vehicle, and an actuator unit connecting the first bar portion and the second bar portion to each other for transferring torque between the first bar portion and the second bar portion. The actuator unit has a first selectable mode providing a first predetermined torque ratio between the first bar portion and the second bar portion, and a second selectable mode providing a second predetermined torque ratio between the first bar portion and the second bar portion. The first torque ratio and the second torque ratio are different from each other. ## Claims ### Claim 1 An anti-roll bar for a vehicle, the anti-roll bar comprising: a first bar portion for connection to a left-side wheel suspension of the vehicle and a second bar portion for connection to a right-side wheel suspension of the vehicle, and an actuator unit connecting the first bar portion and the second bar portion to each other for transferring torque between the first bar portion and the second bar portion, wherein the actuator unit has a first selectable mode providing a first predetermined torque ratio between the first bar portion and the second bar portion, and a second selectable mode providing a second predetermined torque ratio between the first bar portion and the second bar portion, the first predetermined torque ratio and the second predetermined torque ratio being different from each other; and wherein the actuator unit provides a first lever arm for the first bar portion and a second lever arm for the second bar portion, the first lever arm and the second lever arm being connected for transferring torque between the first bar portion and the second bar portion, the ratio between the length of the first lever arm and the length of the second lever arm is adjustable for achieving the first selectable mode and the second selectable mode. ### Claim 2 (depends on 1) The anti-roll bar according to claim 1, wherein the actuator unit has at least one first lever connected to one of the first bar portion and the second bar portion, the effective length of the first lever being variable for achieving the adjustable ratio between the length of the first lever arm and the length of the second lever arm. ### Claim 3 (depends on 1) The anti-roll bar according to claim 1, wherein the actuator unit has a first lever connected to the first bar portion and a second lever connected to the second bar portion, the effective length of the first lever and the effective length of the second lever being variable for achieving the adjustable ratio between the length of the first lever arm and the length of the second lever arm. ### Claim 4 (depends on 1) The anti-roll bar according to claim 1, wherein the actuator unit comprises a controllable actuator member for adjusting the ratio between the length of the first lever arm and the length of the second lever arm. ### Claim 5 (depends on 4) The anti-roll bar according to claim 4, wherein the actuator member is an actuator cylinder with a piston rod. ### Claim 6 An anti-roll bar for a vehicle, the anti-roll bar comprising: a first bar portion for connection to a left-side wheel suspension of the vehicle and a second bar portion for connection to a right-side wheel suspension of the vehicle, and an actuator unit connecting the first bar portion and the second bar portion to each other for transferring torque between the first bar portion and the second bar portion, wherein the actuator unit has a first selectable mode providing a first predetermined torque ratio between the first bar portion and the second bar portion, and a second selectable mode providing a second predetermined torque ratio between the first bar portion and the second bar portion, the first predetermined torque ratio and the second predetermined torque ratio being different from each other; and wherein the actuator unit comprises gear wheels for transferring torque between a first shaft of the actuator unit connected to the first bar portion and a second shaft of the actuator unit connected to the second bar portion, the gear ratio between the first shaft and the second shaft being changeable for achieving the first selectable mode and the second selectable mode. ### Claim 7 (depends on 1) The anti-roll bar according to claim 1, wherein the actuator unit is controllable by a control unit of the vehicle for activating the first selectable mode and the second selectable mode. ### Claim 8 (depends on 6) The anti-roll bar according to claim 6, wherein the actuator unit comprises one or more clutches for changing the gear ratio between the first shaft and the second shaft. ### Claim 9 (depends on 6) The anti-roll bar according to claim 6, wherein the actuator unit comprises at least one planetary gear train providing the gear wheels. ### Claim 10 (depends on 6) The anti-roll bar according to claim 6, wherein the actuator unit comprises a first planetary gear train and a second planetary gear train, each of the first planetary gear train and the second planetary gear train having an input shaft and an output shaft, an input shaft of the first planetary gear train constituting said first shaft and an input shaft of the second planetary gear train constituting said second shaft, an output shaft of the first planetary gear train and an output shaft of the second planetary gear train being connected to each other. ### Claim 11 (depends on 10) The anti-roll bar according to claim 10, wherein the first planetary gear train and the second planetary gear train have the same design and are connected in series and mirror-inverted relative to each other. ### Claim 12 (depends on 1) The anti-roll bar according to claim 1, wherein the actuator unit has a further selectable mode where the first bar portion and the second bar portion are disconnected from each other for preventing any torque to be transferred between the first bar portion and the second bar portion. ### Claim 13 A control unit for controlling an anti-roll bar of a vehicle, the anti-roll bar comprising a first bar portion for connection to a left-side wheel suspension of the vehicle and a second bar portion for connection to a right-side wheel suspension of the vehicle, and an actuator unit connecting the first bar portion and the second bar portion to each other for transferring torque between the first bar portion and the second bar portion, the actuator unit having a first selectable mode providing a first predetermined torque ratio between the first bar portion and the second bar portion, and a second selectable mode providing a second predetermined torque ratio between the first bar portion and the second bar portion, the first predetermined torque ratio and the second predetermined torque ratio being different from each other, and wherein the actuator unit provides a first lever arm for the first bar portion and a second lever arm for the second bar portion, the first lever arm and the second lever arm being connected for transferring torque between the first bar portion and the second bar portion, the ratio between the length of the first lever arm and the length of the second lever arm is adjustable for achieving the first selectable mode and the second selectable mode, wherein the control unit is configured to receive input signals representing information about at least one of the vehicle or an occupant of the vehicle and, based on the input signals, control the actuator unit for selectively activating the first selectable mode or the second selectable mode. ### Claim 14 (depends on 13) The control unit according to claim 13, wherein the control unit is configured to receive the input signals representing information about the position and/or dynamic data of the vehicle. ### Claim 15 (depends on 13) The control unit according to claim 13, wherein the control unit is configured to receive the input signals from a GPS and/or an electronic map. ### Claim 16 (depends on 13) The control unit according to claim 13, wherein the control unit is configured to receive the input signals representing information about the speed, driving direction, steering angle and/or weight of the vehicle. ### Claim 17 (depends on 13) The control unit according to claim 13, wherein the control unit is configured to receive the input signals representing information about an upcoming turning or cornering manoeuvre of the vehicle and in advance of the current manoeuvre select the first selectable mode or the second selectable mode. ### Claim 18 A control unit for controlling an anti-roll bar of a vehicle, the anti-roll bar comprising a first bar portion for connection to a left-side wheel suspension of the vehicle and a second bar portion for connection to a right-side wheel suspension of the vehicle, and an actuator unit connecting the first bar portion and the second bar portion to each other for transferring torque between the first bar portion and the second bar portion, the actuator unit having a first selectable mode providing a first predetermined torque ratio between the first bar portion and the second bar portion, and a second selectable mode providing a second predetermined torque ratio between the first bar portion and the second bar portion, the first predetermined torque ratio and the second predetermined torque ratio being different from each other, and wherein the actuator unit comprises gear wheels for transferring torque between a first shaft of the actuator unit connected to the first bar portion and a second shaft of the actuator unit connected to the second bar portion, the gear ratio between the first shaft and the second shaft being changeable for achieving the first selectable mode and the second selectable mode, wherein the control unit is configured to receive input signals representing information about at least one of the vehicle or an occupant of the vehicle and, based on the input signals, control the actuator unit for selectively activating the first selectable mode or the second selectable mode.