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    • 37. 发明授权
    • Controlling damping force shock absorber
    • 控制阻尼力减震器
    • US06981577B2
    • 2006-01-03
    • US10786115
    • 2004-02-26
    • Yohei KatayamaHiroyuki MatsumotoKenichi NakamuraMasaaki Uchiyama
    • Yohei KatayamaHiroyuki MatsumotoKenichi NakamuraMasaaki Uchiyama
    • F16F9/53
    • F16F9/537F16F9/465
    • In a controllable damping force shock absorber, a piston member connected to a piston rod is disposed in a cylinder in which a magnetic fluid is contained. A disc valve having an extension-stroke pressure-receiving portion and a compression-stroke pressure-receiving portion is provided in the piston member, and a pilot chamber is formed on a rear side of the disc valve. A coil is provided adjacent to passages communicated with the pilot chamber. By energizing the coil, a magnetic field that acts on the magnetic fluid flowing through the passages is generated, changing the viscosity of the magnetic fluid to control a damping force. A valve-opening pressure of the disc valve is controlled according to the pressure in the pilot chamber, such a way that the magnetic fluid exposed to the magnetic field can flow at a low flow rate, thus achieving low power consumption.
    • 在可控阻尼力减震器中,连接到活塞杆的活塞构件设置在容纳磁性流体的气缸中。 具有延伸行程压力接收部分和压缩行程压力接收部分的盘阀设置在活塞部件中,并且先导室形成在盘阀的后侧。 在与导向室连通的通道附近设置线圈。 通过激励线圈,产生作用在流过通道的磁性流体上的磁场,改变磁性流体的粘度以控制阻尼力。 根据导向室中的压力来控制盘阀的开阀压力,使得暴露于磁场的磁性流体可以以低流量流动,从而实现低功率消耗。