Active stabilizer bar, suspension system and vehicle

Abstract

The utility model discloses an active stabilizer bar, a suspension system and a vehicle. The active stabilizer bar comprises an outer cylinder, a fixing piece, a transmission piece and a sensor assembly, and a containing cavity and a mounting opening which communicate with each other are defined by the outer cylinder. And the fixing piece is positioned at the mounting opening and is connected with the outer cylinder. The transmission part is connected to the side, facing the containing cavity, of the fixing part. The sensor assembly is located in the containing cavity and connected to the end, away from the fixing piece, of the transmission piece. Through the design of the active stabilizer bar, the tiny strain of the fixing piece can be directly transmitted to the sensor assembly, and compared with a traditional scheme of utilizing magnet magnetic induction, the scheme can remarkably improve the measurement precision and the response speed of the active stabilizer bar and reduce feedback lag of the active stabilizer bar. According to the scheme, the structural strength of the active stabilizer bar can be improved, and the stability, comfort and controllability of the vehicle in the running process are ensured.

Description

Technical Field

[0001] This application relates to the field of vehicles, and more particularly to an active stabilizer bar, a suspension system, and a vehicle. Background Technology

[0002] An active stabilizer bar is a device used to improve vehicle handling stability, typically installed on the vehicle's suspension system. It adjusts the stabilizer bar's stiffness via an electric motor, responding in real-time to external disturbances and reducing vehicle roll and sway. The torque sensor of the active stabilizer bar is a key component for detecting the assembly's torque characteristics. Integrated inside the fixed-end flange, it serves as a benchmark for the active stabilizer bar's operation, requiring stability and precision. Existing active stabilizers often exhibit insufficient stability and inadequate detection accuracy during vehicle operation, issues that urgently need to be addressed. Utility Model Content

[0003] This application provides an active stabilizer bar, a suspension system, and a vehicle to address some or all of the shortcomings in the related art.

[0004] An active stabilizing bar includes an outer cylinder, a fixing member, a transmission member, and a sensor assembly. The outer cylinder surrounds an interconnected receiving cavity and a mounting port. The fixing member is located at the mounting port and connected to the outer cylinder. The transmission member is connected to the side of the fixing member facing the receiving cavity. The sensor assembly is located within the receiving cavity and connected to the end of the transmission member opposite to the fixing member.

[0005] Optionally, the sensor assembly includes a sensing element and a conversion element. The sensing element is connected to the transmission element. The conversion element is connected to the side of the sensing element opposite to the fixed element, and is used to convert the force signal into an electrical signal.

[0006] Optionally, the sensing element includes a sensing module and a strain gauge, with the strain gauge attached to the sensing module.

[0007] Optionally, the conversion component includes a circuit board bridge and a conditioning circuit board that are electrically connected to each other. The circuit board bridge is attached to the sensing element, and the conditioning circuit board is disposed on the side of the circuit board bridge opposite to the sensing element.

[0008] Optionally, the active stabilizer bar further includes an elastic element located around the periphery of the sensing module, and the two ends of the elastic element along the axial direction of the active stabilizer bar respectively abut against the conversion element and the fixing element.

[0009] Optionally, the active stabilizing bar further includes a fixing bracket located within the accommodating cavity and connected to the fixing member, with the sensor assembly located between the fixing bracket and the fixing member.

[0010] Optionally, in the direction from the outer cylinder to the fixing member, the projection area of ​​the fixing bracket covers the projection area of ​​the sensor assembly. The fixing bracket includes a fastener and a connecting unit protruding from its outer edge; the fastener is used to connect to the fixing member, and the connecting unit is used to secure the fastener.

[0011] Optionally, the transmission component is a shaft, one end of which is threaded to the fixing component, and the other end is connected to the sensor assembly to transmit torque to the sensor assembly.

[0012] This application also provides a suspension system including an active stabilizer bar as described above. The active stabilizer bar further includes a rocker arm, and the fixing element is a fixing flange of the rocker arm. When the suspension system undergoes relative movement, the rocker arm drives the fixing element to deform.

[0013] This application also provides a vehicle including a body and a suspension system as described above, the suspension system being connected to the body.

[0014] The technical solutions provided by the embodiments of this application may include the following beneficial effects:

[0015] As can be seen from the above embodiments, the active stabilizer bar of this application directly connects the sensor assembly to the transmission component, thereby enabling even minute strains of the fixed component to be directly transmitted to the sensor assembly through the transmission component. Compared to the traditional solution utilizing magnetic induction, this solution significantly improves the measurement accuracy and response speed of the active stabilizer bar, and reduces its feedback lag. Furthermore, a more robust structural connection can be made to the various components of the active stabilizer bar; for example, the sensor assembly can be directly welded to the transmission component without considering whether there is sufficient displacement to ensure magnetic induction detection. Therefore, the solution of this application also improves the structural strength of the active stabilizer bar, ensuring stability, comfort, and handling during vehicle operation.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this application. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the active stabilizer bar in one embodiment of this application;

[0019] Figure 2 This is a partial structural schematic diagram of the active stabilizer bar in one embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the structure of a sensor assembly in one embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the structure of the fixed bracket in one embodiment of this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Active stabilizer bar; 10. Rocker arm; 11. Outer cylinder; 111. Receiving cavity; 12. Fixing component; 13. Transmission component; 14. Sensor assembly; 141. Sensing component; 142. Conversion component; 1421. Circuit board bridge; 1422. Conditioning circuit board; 15. Elastic component; 16. Fixing bracket; 161. Fastener; 162. Connecting unit; X, Axial axis. Detailed Implementation

[0024] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0025] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0026] This application provides a vehicle, including a body and a suspension system, the suspension system being connected to the body.

[0027] Due to road surface undulations and vehicle steering, the wheels experience vertical, longitudinal, and lateral reaction forces during vehicle operation. The suspension system is designed to transmit these reaction forces and the resulting torques to the vehicle body, ensuring normal vehicle operation. Simultaneously, the suspension system also cushions impacts, reduces vibrations, and prevents excessive body roll and lateral displacement, significantly improving vehicle comfort, stability, safety, practicality, and the user's driving experience.

[0028] The suspension system of this application includes an active stabilizer bar 1. The active stabilizer bar 1 further includes a rocker arm 10, and the rocker arm 10 includes a fixing member 12. The fixing member 12 is a fixing flange of the rocker arm 10. When the suspension system generates relative movement, the rocker arm 10 drives the fixing member 12 of the active stabilizer bar 1 to deform.

[0029] During vehicle operation, when encountering road inclination or steering, the suspension system will generate relative movement. At this time, the rocker arm 10 of the active stabilizer bar 1 will transmit torque to the active stabilizer bar 1 through the fixing component 12. After receiving the torque, the active stabilizer bar 1 will generate reverse torsion of the rocker arm 10 according to the signal sent by the vehicle system, thereby reducing vehicle roll and body pitch, making the vehicle more agile under dynamic conditions. At the same time, this design can also improve the vehicle's stability, comfort and handling, and improve the user's driving experience.

[0030] like Figure 2 As shown, the active stabilizing bar 1 of this application includes an outer cylinder 11, a fixing member 12, a transmission member 13, and a sensor assembly 14. The outer cylinder 11 surrounds an interconnected receiving cavity 111 and a mounting opening. The fixing member 12 is located at the mounting opening and connected to the outer cylinder 11. The transmission member 13 is connected to the side of the fixing member 12 facing the receiving cavity 111. The sensor assembly 14 is located inside the receiving cavity 111 and connected to the end of the transmission member 13 opposite to the fixing member 12.

[0031] The active stabilizer bar 1 of this application directly connects the sensor assembly 14 to the transmission component 13, allowing even minute strains of the fixed component 12 to be directly transmitted to the sensor assembly 14 via the transmission component 13. Compared to traditional solutions utilizing magnetic induction, this solution significantly improves the measurement accuracy and response speed of the active stabilizer bar 1, while reducing feedback lag. Furthermore, it allows for a more robust structural connection between the various components of the active stabilizer bar 1; for example, the sensor assembly 14 can be directly welded to the transmission component 13 without considering sufficient displacement to ensure magnetic induction detection. Therefore, the solution of this application also improves the structural strength of the active stabilizer bar 1, ensuring stability, comfort, and handling during vehicle operation.

[0032] In an optional embodiment, the sensor assembly 14 includes a sensing element 141 and a conversion element 142. The sensing element 141 is connected to the transmission element 13. The conversion element 142 is connected to the side of the sensing element 141 opposite to the fixing element 12 and is used to convert the force signal into an electrical signal.

[0033] The design of the sensor assembly 14 in this application enables the sensor 141 connected to the transmission component 13 to sense the force signal transmitted by the rocker arm 10 in a timely and accurate manner, while the converter 142 on the other side can convert the force signal into an electrical signal and send it to the vehicle system. This allows the active stabilizer bar 1 to provide more intelligent control for the suspension system, effectively improving the response speed and dynamic performance of the suspension system, and enhancing the stability, comfort, and handling of the vehicle.

[0034] In an optional embodiment, the sensing element 141 includes a sensing module and a strain gauge (not shown in the figure), with the strain gauge attached to the sensing module.

[0035] Since the sensing module is directly fixed to the transmission component 13, even minute strains generated by the fixed component 12 can be promptly transmitted to the sensing module through the transmission component 13, and the torque magnitude can be accurately obtained through the strain gauge. The strain gauge is attached to the side of the sensing module opposite to the fixed component 12, i.e., the strain gauge is located between the sensing module and the conversion component 142, thereby accurately transmitting the detected torque information to the conversion component 142. Compared to the traditional scheme that uses a magnetic induction module to generate relative movement for detection, the sensing component 141 of this application is completely fixed to the transmission component 13, thus enabling more accurate sensing and detection of minute strains without requiring sufficient travel. Therefore, the design of the sensing component 141 in this application not only improves measurement accuracy and response speed but also further simplifies the structure of the active stabilizing rod 1, enhancing the convenience of its production and assembly process.

[0036] In an optional embodiment, the conversion element 142 includes a circuit board bridge 1421 and a conditioning circuit board 1422 that are electrically connected to each other. The circuit board bridge 1421 is attached to the sensor 141, and the conditioning circuit board 1422 is disposed on the side of the circuit board bridge 1421 opposite to the sensor 141.

[0037] In actual operation, when the suspension system undergoes relative movement, the rocker arm 10 of the active stabilizer bar 1 drives the fixed component 12 to produce micro-deformation. This micro-deformation is transmitted to the sensing module through the transmission component 13, and changes the resistance value detected by the circuit board bridge 1421 through the pressure-varying effect of the strain gauge. The resistance information is then transmitted to the electrically connected conditioning circuit board 1422. The conditioning circuit board 1422 converts the torque value corresponding to the resistance value into an electrical signal and feeds it back to the vehicle infotainment system. The controller of the vehicle infotainment system then controls the response of the active stabilizer bar 1. In the solution of this application, the entire detection process is rapid and does not require sufficient travel. Instead, it can directly capture the micro-deformation of the fixed component 12. Therefore, the active stabilizer bar 1 of this application has the characteristics of high detection accuracy, fast response speed, and good structural stability.

[0038] In an optional embodiment, combined with Figure 3 As shown, the active stabilizer bar 1 also includes an elastic element 15, which is located on the periphery of the sensing module, and the two ends of the elastic element 15 along the axial direction X abut against the conversion element 142 and the fixing element 12 respectively.

[0039] During the assembly of the active stabilizer bar 1, the outer cylinder 11, fixing component 12, transmission component 13, and sensor assembly 14 are all fixedly connected. For example, the outer cylinder 11 is fixedly connected to the fixing component 12, the fixing component 12 is fixedly connected to the transmission component 13, and the transmission component 13 is fixedly connected to the sensor assembly 14. Therefore, during the assembly of the active stabilizer bar 1, deformation or misalignment of structural components caused by assembly, such as pitch errors during threaded connections or structural deformation caused by welding, may affect the strain gauge detection accuracy. Therefore, the active stabilizer bar 1 of this application has an elastic element 15 on the periphery of the sensing module. This elastic element 15 can eliminate structural errors between rigid structures during the assembly of the active stabilizer bar 1 through elastic deformation. After assembly, machine testing and calibration can adjust the strain gauge detection accuracy to a suitable range, thereby ensuring the measurement accuracy of the sensing module and improving vehicle comfort and handling.

[0040] In an optional embodiment, the transmission component 13 is a shaft, one end of which is threaded to the fixing component 12, and the other end is connected to the sensor assembly 14 to transmit torque to the sensor assembly 14.

[0041] In the actual assembly process, one end of the shaft is threaded to the fixing member 12, and threadlocker is applied to the connection to ensure the stability of the connection between the shaft and the fixing member 12. Simultaneously, the other end of the shaft is welded to the sensing module, allowing the strain generated by the fixing member 12 to be transmitted to the sensing module more directly through the shaft. Therefore, this design not only ensures the structural strength of the active stabilizing rod 1 but also improves the detection accuracy of the sensing module.

[0042] It should be noted that the elastic element 15 described in this application is an elastic ring, which surrounds the periphery of the sensing module, thereby providing a more balanced buffer. In other optional embodiments, the elastic element 15 may also be multiple sheet springs or multiple springs, etc., and this application does not limit this. In addition, the fixed connection described in this application includes connection methods such as welding, bolting, and bonding. For example, the outer cylinder 11 can be welded to the fixing element 12, the sensing element 141 can be welded to the transmission element 13, and the conversion element 142 can be bonded to the sensing element 141, etc. Of course, other fixed connection methods can also be used for these components, and this application does not limit this.

[0043] In an optional embodiment, the active stabilizing bar 1 further includes a fixing bracket 16, which is located within the accommodating cavity 111 and connected to the fixing member 12. The sensor assembly 14 is located between the fixing bracket 16 and the fixing member 12.

[0044] The active stabilizing bar 1 of this application fixes the sensor assembly 14 between the fixed bracket 16 and the fixing member 12, thereby further improving the structural stability of the sensor assembly 14, avoiding the influence of external structural deformation on the sensor assembly 14, and thus ensuring its safety and detection accuracy.

[0045] In an optional embodiment, combined with Figure 4 As shown, in the direction from the outer cylinder 11 to the fixing member 12, the projection area of ​​the fixing bracket 16 covers the projection area of ​​the sensor assembly 14. The fixing bracket 16 includes a fastener 161 and a connecting unit 162 protruding from the outer edge of the fixing bracket 16. The fastener 161 is used to connect to the fixing member 12, and the connecting unit 162 is used to fix the fastener 161.

[0046] In other words, on a plane perpendicular to the X-axis, the overall area of ​​the fixing bracket 16 exceeds that of the sensor assembly 14, and the connecting unit 162 is located at the outer edge of the fixing bracket 16. Therefore, when the fastener 161 is connected to the fixing member 12, its structure does not affect the internal sensor assembly 14; it can pass over the sensor assembly 14 and be fixed to the fixing member 12. This design improves the structural stability of the sensor assembly 14 without affecting its overall structure. Furthermore, the fixing bracket 16 can adjust the tightness of the fastener 161 to ensure more uniform pressure on the sensor assembly 14, thereby ensuring higher detection accuracy and less noise impact on the sensor assembly 14.

[0047] In such Figure 3 and Figure 4 In the illustrated embodiment, the connecting unit 162 is actually a screw hole protruding from the outer edge of the fixing bracket 16, and the fastener 161 is a bolt. The fastener 161 passes through the connecting unit 162 and is screwed to the fixing member 12. As described above, the fixing connection method described in this application can be adjusted according to the actual working scenario and user needs. For example, welding, bolting, or bonding can be used. That is to say, the fastener 161 and connecting unit 162 described in this application can also be designed to be welded, bonded, or otherwise, and this application does not limit this.

[0048] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An active stabilizer bar, characterized by, include: The outer cylinder is configured to form an interconnected receiving cavity and an installation port; A fastener is located at the mounting port and connected to the outer cylinder; A transmission component, the transmission component being connected to the side of the fixing component facing the receiving cavity; as well as A sensor assembly, located within the accommodating cavity and connected to the end of the transmission member opposite to the fixing member.

2. The active stabilizer bar of claim 1, wherein The sensor assembly includes a sensing element and a conversion element; the sensing element is connected to the transmission element; the conversion element is connected to the side of the sensing element opposite to the fixed element, and is used to convert force signals into electrical signals.

3. The active stabilizer bar of claim 2, wherein, The sensing element includes a sensing module and a strain gauge, with the strain gauge attached to the sensing module.

4. The active stabilizer bar of claim 2, wherein, The conversion component includes a circuit board bridge and a conditioning circuit board that are electrically connected to each other; the circuit board bridge is attached to the sensing element, and the conditioning circuit board is disposed on the side of the circuit board bridge opposite to the sensing element.

5. The active stabilizer bar according to claim 3, characterized in that, The active stabilizing bar also includes an elastic element located around the periphery of the sensing module, and the two ends of the elastic element along the axial direction of the active stabilizing bar respectively abut against the conversion element and the fixing element.

6. The active stabilizer bar of claim 1, wherein, The active stabilizing bar also includes a fixed bracket, which is located within the accommodating cavity and connected to the fixing member. The sensor assembly is located between the fixed bracket and the fixing member.

7. The active stabilizer bar of claim 6, wherein, In the direction from the outer cylinder to the fixing member, the projection area of ​​the fixing bracket covers the projection area of ​​the sensor assembly; wherein, the fixing bracket includes a fastener and a connecting unit protruding from the outer edge of the fixing bracket, the fastener being used to connect to the fixing member, and the connecting unit being used to fix the fastener.

8. The active stabilizer bar of claim 1, wherein, The transmission component is a shaft column, one end of which is threaded to the fixing component, and the other end is connected to the sensor assembly, for transmitting torque to the sensor assembly.

9. A suspension system characterized by, The suspension system includes an active stabilizer bar as described in any one of claims 1-8; wherein the active stabilizer bar further includes a rocker arm, and the fixing member is a fixing flange of the rocker arm; when the suspension system generates relative movement, the rocker arm drives the fixing member to deform.

10. A vehicle characterized by comprising: The vehicle includes a body and a suspension system as described in claim 9, the suspension system being connected to the body.

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