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Bleed-type electromagnetic valve

  • US 8,100,142 B2
  • Filed: 03/25/2009
  • Issued: 01/24/2012
  • Est. Priority Date: 03/28/2008
  • Status: Expired due to Fees
First Claim
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1. A bleed solenoid valve comprising:

  • a valve main body that is hollow and formed with an input port into which hydraulic fluid flows in an axial direction, an output port that outputs hydraulic fluid sideward, and a discharge port that discharges hydraulic fluid sideward;

    a flow-changing part that is accommodated inside the valve main body, and formed with a first flow path, wherein hydraulic fluid that enters through the input port and flows inside due to a throttle may be output from the output port and discharged from the drain port, and a second flow path, wherein hydraulic fluid is directly output from the output port without passing through the throttle, with the flow-changing part switching between blocking and opening the second flow path in accordance with movement in the axial direction;

    a valve shaft that is accommodated inside the flow-changing part, and capable of switching among a state in which the discharge port is closed with axial movement of the flow-changing part and the valve shaft, and hydraulic fluid flows through the first flow path and the second flow path, a state in which the second flow path is blocked and hydraulic fluid flows through the first flow path with adjustment of the open state of the discharge port, and a state in which the input port is closed and the output port is in communication with the discharge port; and

    a solenoid part that moves the valve shaft in the axial direction.

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