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CN-122008757-A - Active suspension and vehicle

CN122008757ACN 122008757 ACN122008757 ACN 122008757ACN-122008757-A

Abstract

The application relates to the technical field of vehicle vibration reduction, and discloses an active suspension, which comprises a supporting component, a driving component and a vibration absorber component. The vibration damper comprises a cylinder barrel and a piston rod arranged on the cylinder barrel, wherein the cylinder barrel is in threaded connection with the sleeve, the piston rod penetrates through the hollow shaft hole and is fixed on the support assembly, and the cylinder barrel can reciprocate in the sleeve along the direction of the piston rod. The active suspension has a simple structure, and can greatly reduce the installation space under the condition of ensuring higher active power output. The application also discloses a vehicle.

Inventors

  • ZHANG JIANJIE
  • WANG TAO
  • GU HAOHUA
  • WEI YINTAO

Assignees

  • 浙江科亿国际智能悬架技术有限公司

Dates

Publication Date
20260512
Application Date
20260203

Claims (10)

  1. 1. An active suspension for a vehicle is provided, characterized by comprising the following steps: A support assembly (10) for attachment to a body of a vehicle; The driving assembly (20) comprises a hollow shaft motor (21) and a sleeve (22), wherein the hollow shaft motor (21) is arranged on the supporting assembly (10), the hollow shaft motor (21) is provided with a hollow shaft hole (211), the driving end of the hollow shaft motor (21) is in driving connection with the sleeve (22), and the hollow space of the sleeve (22) is communicated with the hollow shaft hole (211); The shock absorber assembly (30) is used for being connected to a wheel assembly of a vehicle, the shock absorber assembly (30) comprises a cylinder barrel (31) and a piston rod (33) arranged on the cylinder barrel (31), the cylinder barrel (31) and the sleeve (22) form a ball screw mechanism, the piston rod (33) is fixed on the support assembly (10) through the hollow shaft hole (211), and the cylinder barrel (31) can reciprocate in the sleeve (22) along the direction of the piston rod (33).
  2. 2. Active suspension according to claim 1, characterized in that the outer surface of the cylinder (31) has a screw thread section (311) and a non-thread section (312), wherein the screw thread section (311) and the sleeve (22) constitute a ball screw mechanism and the length of the screw thread section (311) is greater than the length of the sleeve (22).
  3. 3. Active suspension according to claim 2, characterized in that the sleeve (22) cooperates with the screw thread section (311) by means of balls to form a ball screw mechanism.
  4. 4. Active suspension according to claim 2, characterized in that the support assembly (10) comprises: an inner support table (11), wherein a hollow shaft motor (21) of the driving assembly (20) is arranged on the inner support table (11), and the piston rod (33) passes through the hollow shaft hole (211) to be fixed on the inner support table (11); an outer support cylinder (12) sleeved on the inner support table (11); And a buffer ring (13) arranged between the inner support table (11) and the outer support cylinder (12).
  5. 5. The active suspension according to claim 4, wherein a clamping structure (111) is arranged on the outer side surface of the inner supporting table (11), a clamping matching structure (121) is arranged on the inner side surface of the outer supporting cylinder (12), the buffer ring (13) is arranged between the clamping structure (111) and the clamping matching structure (121), and a reserved hole (112) is further formed in the inner supporting table (11).
  6. 6. The active suspension of claim 4, further comprising: And the shell assembly (40) is connected with the outer support cylinder (12) of the support assembly (10) in a sealing way, and the second end is connected with the non-threaded section (312) of the cylinder barrel (31) in a sealing way so as to form a closed space with the support assembly (10) and the non-threaded section (312) of the cylinder barrel (31).
  7. 7. Active suspension according to claim 6, characterized in that the housing assembly (40) comprises: the first end of the capsule shell (41) is in sealing connection with the outer support cylinder (12) of the support assembly (10); The first protective cylinder (42) is sleeved on the non-threaded section (312) of the cylinder barrel (31), and the second end of the bag cover (41) is connected with the first protective cylinder (42) in a sealing way; And the second protective cylinder (43) is sleeved on the outer surface of the capsule shell (41).
  8. 8. Active suspension according to any one of claims 1to 7, characterized in that the shock absorber assembly (30) further comprises: And a piston (32) movably arranged in the cylinder (31), wherein the piston (32) is connected with the piston rod (33).
  9. 9. Active suspension according to claim 8, characterized in that the shock absorber assembly (30) further comprises: A guide (34) provided in the cylinder (31); A floating piston (35) provided in the cylinder (31); Wherein the piston (32) is arranged between the guide (34) and the floating piston (35), and the piston rod (33) passes through the guide.
  10. 10. A vehicle, characterized by comprising: a vehicle body; active suspension according to any one of claims 1to 9, the support assembly (10) of which is connected to the vehicle body; A wheel assembly, a shock absorber assembly (30) connected to the active suspension.

Description

Active suspension and vehicle Technical Field The application relates to the technical field of vehicle vibration reduction, in particular to an active suspension and a vehicle. Background At present, with the development of automobile technology, the requirements of people on the riding comfort of automobiles are also increasing. During running of the vehicle, since the ground surface contacted by the wheels is not a flat plane, the vehicle body inevitably generates a vibration phenomenon. In order to alleviate the vibration phenomenon, a suspension system is generally provided, which can bear the weight of the vehicle body and attenuate the vibration caused by the road surface unevenness on the vehicle body, thereby ensuring the smooth running of the vehicle. In order to further enable the vehicle to run smoothly, the suspension system adjusts the rigidity and the damping coefficient of the shock absorber in real time according to road conditions and driving states. The active suspension in the related art includes a hydraulic active damper, a linear motor type active damper, and a ball screw type active damper. The hydraulic active damper generates damping force based on liquid flow, the linear motor type active damper adjusts damping force of the damper in real time by controlling thrust of a motor, and the ball screw type active damper converts rotary motion into linear motion to adjust damping force. In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art: In the active suspension, the hydraulic active shock absorber is generally used as a driving executing mechanism through an electromagnetic valve, the structure is complex, the cost is high, meanwhile, an oil way is blocked, so that the damping force is large, high-frequency vibration is difficult to filter, if the linear motor active shock absorber achieves high active power output, a large motor is required, the installation space is limited, and the ball screw active shock absorber is large in local volume and has the problems of limited installation space and the like. It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art. Disclosure of Invention The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows. The embodiment of the disclosure provides an active suspension and a vehicle, which have simple structures, and can greatly reduce the installation space and the weight of the vehicle under the condition of ensuring higher active power output. In some embodiments, the active suspension includes a support assembly, a drive assembly, and a shock absorber assembly. The driving device comprises a support assembly, a vibration damper assembly and a driving assembly, wherein the support assembly is used for being connected to a vehicle body of a vehicle, the driving assembly comprises a hollow shaft motor and a sleeve, the hollow shaft motor is arranged on the support assembly, the hollow shaft motor is provided with a hollow shaft hole, a driving end of the hollow shaft motor is in driving connection with the sleeve, a hollow space of the sleeve is communicated with the hollow shaft hole, the vibration damper assembly is used for being connected to a wheel assembly of the vehicle, the vibration damper assembly comprises a cylinder barrel and a piston rod arranged on the cylinder barrel, the cylinder barrel and the sleeve form a ball screw mechanism, the piston rod penetrates through the hollow shaft hole and is fixed on the support assembly, and the cylinder barrel can reciprocate in the sleeve along the direction of the piston rod. In some embodiments, the outer surface of the cylinder barrel is provided with a screw thread section and a non-thread section, wherein the screw thread section and the sleeve form a ball screw mechanism, and the length of the screw thread section is greater than the length of the sleeve. In some embodiments, the sleeve mates with the screw thread segment through balls to form a ball screw mechanism. In some embodiments, the support assembly includes an inner support table, an outer support cylinder, and a buffer ring. The hollow shaft motor of the driving assembly is arranged on the inner supporting table, the piston rod penetrates through the hollow shaft hole and is fixed on the inner supporting table, the outer supporting cylinder is sleeved on the inner supporting table, and the buffer ring is arranged between the