Patent ID: 8960390
Filing Date: 2015-02-24
Classification: F16F

Abstract:
1. A vehicle-mounted active vibration reducing apparatus comprising: a dynamic damper including a bracket mounted on a first target object, said dynamic damper capable of vibrating in a plurality of directions, a plurality of elastic members mounted on the bracket, and an actuator operatively supported by the elastic members; a vibration controller for operating the actuator based on a vibration signal, which is correlated to vibrations of a second target object; a vibration sensor embedded in the second target object for generating the vibration signal; and a fuel injection controller; wherein: the actuator comprises a flexibly resilient block and an actuator unit molded within said block; the dynamic damper is operable to attenuate vibrations from the first target object in a vehicle vertical direction based on the total mass of the dynamic damper including the mass of the actuator; the dynamic damper is further operable to attenuate vibrations from the second target object in a vehicle front-rear direction based on movement of the actuator unit in the vehicle front-rear direction; and the elastic members are arranged on the bracket along the vehicle front-rear direction so as to sandwich the block therebetween; the actuator operates in the vehicle front-rear direction; the elastic members are formed to be thinner in the vehicle vertical direction than in the vehicle front-rear direction; the actuator and the elastic members are arranged in a substantially linear relationship; each of the elastic members is of a flat rectangular parallelepiped shape, in which a length in a vehicle width direction is greater than a length in the vehicle front-rear direction and the length in the vehicle front-rear direction is greater than a length in the vehicle vertical direction; and the vibration controller controls the actuator unit based on the vibration signal received from the vibration sensor and further based on an engine pulse signal received from the fuel injection controller.