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    • 4. 发明专利
    • DE3806227A1
    • 1988-09-08
    • DE3806227
    • 1988-02-26
    • AISIN SEIKITOYOTA MOTOR CO LTD
    • FURUTA YOUICHIANDO MASAMOTOTAKEUCHI HIROAKINOGUCHI NOBORUNAKANISHI NOBUYASU
    • B60T8/40B60T8/32B60T8/34B60T8/42B60T8/44
    • An anti-skid apparatus for installation in a vehicle braking system having a regulator valve for producing a hydraulic power pressure in accordance with a hydraulic braking pressure from a master cylinder. A control cylinder is disposed in a hydraulic circuit connecting the master cylinder to a wheel brake cylinder, and comprises a cylinder body having a cylinder bore defined therein and a piston axially slidably disposed within the cylinder bore. This piston forms at its one end a pressure chamber communicating with the wheel brake cylinder, and is applied at its the other end with the hydraulic power pressure from the regulator. Disposed in the control cylinder is a normally open cut-off valve which normally permits the flow of the hydraulic braking pressure from the master cylinder into the pressure chamber and blocks the flow of the hydraulic braking pressure when the piston moves to an extent more than a predetermined distance from its initial position for decreasing the volume of the pressure chamber. And, a changeover valve is disposed between the regulator valve and the control cylinder, and applies the hydraulic power pressure to the piston or discharges it from the control cylinder.
    • 5. 发明专利
    • DE3149718A1
    • 1982-07-22
    • DE3149718
    • 1981-12-15
    • AISIN SEIKITOYOTA MOTOR CO LTD
    • TAKEUCHI HIROAKIKAWAGUCHI HIROSHINISHIWAKI KIYOSHITOBA FUJIONOMURA YOSHIHISA
    • B60T11/20B60T11/22B60T11/224B60T17/22F15B7/08
    • A master cylinder is provided on the cylinder body with a reservoir-receiving mouth formed near the border of the section of of a large diameter and the section of a small diameter of a stepped bore, a through hole being formed between the bottom surface of the reservoir-receiving mouth and the first pressure chamber, a compensation hole being formed between the bottom surface of the reservoir-receiving mouth and the second pressure chamber, a valve seat fitted in and fixed to the reservoir-receiving mouth and having an internal hole formed therein, a check valve provided within the reservoir-receiving mouth between the bottom surface of the reservoir-receiving mouth and the valve seat with the valve element being pressed against a resilient member fixed to the valve seat by means of a spring, a projecting member protruding into the first pressure chamber through the through hole provided for the valve element coaxially with the valve element so that the valve element is titlted to form a passage between the valve element and the resilient member by engagement of the piston section of a small diameter of the stepped piston with the projecting member while the stepped piston is at a return position, and the valve element including a passage formed therein through which the first pressure chamber communicates with the reservoir via the internal hole formed in the valve seat and an relief valve for maintaining the passage closed until the effective pressure within the first pressure chamber reaches a predetermined value.