An active suspension with different axes of coil spring and rubber spring

Abstract

The invention discloses an active suspension in which a helical spring and a rubber spring have different axes in the technical field of vehicle suspension. The rubber spring is composed of a rigid outer ring, a rubber main spring, a rigid guide rail and a rigid inner tube. There is a coil spring with a different axis from the first rubber spring and the active force actuator on the side of the active force actuator. The upper end of the coil spring is pressed Leaning on the connecting plate fixedly connected to the vehicle body, the lower end is supported on the spring mounting seat fixedly connected to the lower wishbone, and the lower wishbone is connected between the vehicle body and the wheel; the upper end of the outer cylinder of the active force actuator is rigidly connected with the The lower end of the rigid outer ring of the second rubber spring with the same structure as the first rubber spring, the suspension not only has the primary damping function formed by the active force actuator and the coil spring, but also has the second damping function formed by the first rubber spring. vibration function and three-stage vibration damping function formed by the second rubber spring.

Description

technical field [0001] The invention belongs to the technical field of vehicle suspension, and in particular relates to a vehicle active suspension adopting a rotating electrical machine type active force actuator. Background technique [0002] The active force actuator is a key component of the vehicle's active suspension. The active force actuator has the ability to provide active control force to the suspension and has the potential to make the car obtain a good ride comfort. At present, active power actuators include hydrostatic type, pneumatic type, linear motor type, ball screw-rotary motor type, hydrostatic-motor / pump-electrical type, etc. Among them, the ball screw-rotary motor type active force actuator is due to The ball screw is used to amplify the movement speed between the suspensions, so its energy density is relatively high, but its disadvantages are: the inertia of the rotating motor rotor is amplified, so that the active control force is connected in paralle...

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Problems solved by technology

[0003] The invention aims at the problem that the ideal control force of the suspension is amplified due to the large equivalent inertial mass of the existing suspension using the rotating motor type active force actuator, and proposes a helical spring and a rubber spring with different axes. The central active suspension, the active force actuator and the coil spring are installed on different axes, and the active force actuator is concentrically connected in series with one or two integral outer ring rubber springs with vibration damping function, which effectively eliminates the impact of the equivalent inertial mass on the ideal The influence of control

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