Hydraulic pressure control unit of brake system for vehicle

Abstract

The present invention relates to a hydraulic pressure control unit (50) having at least one pump (60) for raising the hydraulic pressure of a brake fluid. The hydraulic pressure control unit (50) according to the present invention is a hydraulic pressure control unit (50) of a brake system (1) for a vehicle (100) which includes a discharge flow passage (140) to which a brake fluid whose pressure has been raised by the pump (60) is discharged, and a throttle member (80) provided in the discharge flow passage (140), wherein the throttle member (80) includes a sleeve-shaped base body (81), and areed valve like partition member (82) that divides the inside of the base body (81) into an inflow chamber (83), into which the brake fluid flows, and an outflow chamber (84), from which the brake fluid flows out, and the partition member (82) includes a fixation part (82a) that is fixed to the base body (81), and a non-fixation part (82b) that is not fixed to the base body (81).

Description

technical field [0001] The present invention relates to a hydraulic pressure control unit of a brake system for a vehicle, and particularly relates to a hydraulic pressure control unit including a pump for increasing the hydraulic pressure of brake fluid. Background technique [0002] As a conventional brake system for a vehicle, there is a brake system for a vehicle equipped with a hydraulic circuit. The brake system for a vehicle has a main flow that communicates with the master cylinder and the wheel cylinder, and a secondary flow that releases the brake fluid from the main flow. The supply flow path for supplying the brake fluid to the middle part of the auxiliary flow path. [0003] For example, the upstream end of the brake fluid flow in the auxiliary flow path is connected to the wheel cylinder side area of ​​the main flow with the inlet valve as the reference, and the downstream end of the auxiliary flow path is connected to the inlet valve of the main flow. The are...

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Problems solved by technology

[0008] However, the pulsation reducing device described in Patent Document 1 is configured to have a first orifice through which the brake fluid discharged from the pump passes, and if the flow rate of the above-mentioned injected brake fluid is larger than a predetermined flow rate, the brake fluid passes through. The second orifice is arranged in parallel with the first orifice, so the inner diameter of the flow path near the discharge port of the pump has to be set larger than the inner diameter of the discharge flow path, which will cost additional costs for flow path processing

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