Abstract: A vehicular brake hydraulic pressure control device includes accumulators that are connected to a first brake pedal and store brake fluid with a first master cylinder at atmosphere. A first brake system is operable to apply interlock control to a front wheel brake F of a second brake system. A switching unit switches a channel of brake fluid flowing to the first hydraulic pressure output channel of the first brake system, from the first master cylinder to the accumulators when a pump is in operation.

Abstract: A brake fluid pressure control device for a bar handle vehicle has a front wheel brake system which imparts a braking force to a front wheel and a rear wheel brake system which imparts a braking force to a rear wheel. At least one of the brake systems has a master cylinder which generates brake fluid pressure in accordance with an operation amount of a brake operation element, first and second wheel cylinders both of which impart the brake force on one of the front and rear wheels, a first hydraulic path which communicates the master cylinder with the first wheel cylinder, a second hydraulic path which is branched from the first hydraulic path and connected to the second wheel cylinder and a boosting unit which boosts the brake fluid pressure in the second wheel cylinder without boosting the brake fluid pressure in the first wheel cylinder.

Abstract: A flange 62 having motor mounting through holes 63 is provided on a motor 6, motor mounting holes 19 are provided on a base body 1, so that motor mounting screw 61 are passed through the motor mounting through hole 63 from a back surface 1b side so as to be screwed into the motor mounting holes 19 to fix the motor 6 to the base body 1. Housing mounting holes 83 are provided on a control housing 8, housing mounting through holes 17 are formed on the base body 1 so as to be offset from portions which are in abutment with the flange 62, so that housing mounting screws 81 are passed through the housing mounting through holes 17 from the back surface 1b side so as to be screwed into the housing mounting holes 83 to fix the control housing 8 to the base body 1.

Abstract: A vehicle brake hydraulic pressure controller provided with a stroke simulator including a dummy cylinder includes a base member, a plurality of electromagnetic valves, a motor and pumps. The base member is constituted with a flow path in correspondence with a brake system. A plurality of the electromagnetic valves is attached to one face of the base member for controlling a flow of a brake fluid in the flow path. The motor is attached to other face constituting a back face side of the one face of the base member. The pumps are attached to a side face contiguous to the one face of the base member and are driven by the motor for delivering the brake fluid to the flow path. The dummy cylinder and the pumps are aligned at the base member with axis lines in a longitudinal direction being substantially in parallel with each other.

Abstract: A vehicular brake hydraulic pressure control device has a first operation unit T1 including a first brake operation element; a first brake system K1 for braking a first wheel brake R corresponding to the first operation unit T1; and a first control valve unit A and B for controlling brake hydraulic pressure in the first brake system. In the device, the first operation unit T1 and the first brake system K1 are separated so as not to flow a brake fluid, and the device further comprises a brake fluid tank 30 having a reservoir function for supplying the brake fluid to the separated first brake system K1.

Abstract: A brake fluid pressure controller for a vehicle having a brake system, a brake operation element and a master cylinder, the brake system including: a pump configured for being activated and increasing brake fluid pressure to provide braking force to a wheel brake of the other brake system in which the brake operation element is not operated; a cutoff valve which blocks an output fluid pressure passage leading from a master cylinder-side to a wheel brake-side when the pump is operated; a brake fluid pool disposed downstream of the cutoff valve and upstream of the pump; and a pressure member configured for being slidably moved by a brake fluid pressure generated on the master cylinder-side relative to the cutoff valve by an operation of the brake operation element and for providing pressure to a fluid pressure passage leading to the wheel brake.

Abstract: A vehicular brake hydraulic pressure control device of the invention includes accumulators that are connected to a first brake pedal L1 and store brake fluid with a first master cylinder MC1 at atmosphere, a first brake system K1 that is operable to apply interlock control to a front wheel brake F of a second brake system K2, and a switching unit 6 that switches channels of brake fluid flowing to the first hydraulic pressure output channel D1 of the first brake system, from the first master cylinder MC1 to the accumulators 7, 8 when a pump 24 is in operation.

Abstract: A plunger pump, includes: a plunger pump unit including a pump chamber and a plunger for pressing a hydraulic fluid in the pump chamber to perform a discharging operation of the hydraulic fluid; a motor; and a cam portion driven by the motor to rotate and press the plunger. The cam portion has at least two discharge regions for pressing the plunger and a suction region formed between the discharge region. The plunger performs the discharging operation two times or more by one rotation of the cam portion.

Abstract: A support structure of a control board has a control board including a plurality of attaching holes disposed at respective corners of an imaginary polygon; a support member for supporting the control board; and a plurality of support bosses disposed on the support member, a plurality of support bosses each having a support portion in contact with one face of the control board, and an engaging portion inserted into the attaching hole and engaged with other face of the control board, wherein each of the engaging portions is formed with a split groove in a shape of a straight line opened at a front end thereof and the respective support bosses are provided at the support member by avoiding the split grooves of the support bosses disposed at two ends of straight lines connecting the corners of the imaginary polygon from being disposed on the same straight lines.

Abstract: A plunger pump, includes: a plunger pump unit including a pump chamber and a plunger for pressing a hydraulic fluid in the pump chamber to perform a discharging operation of the hydraulic fluid; a motor; and a cam portion driven by the motor to rotate and press the plunger. The cam portion has at least two discharge regions for pressing the plunger and a suction region formed between the discharge region. The plunger performs the discharging operation two times or more by one rotation of the cam portion.

Abstract: A support structure of a control board has a control board including a plurality of attaching holes disposed at respective corners of an imaginary polygon; a support member for supporting the control board; and a plurality of support bosses disposed on the support member, a plurality of support bosses each having a support portion in contact with one face of the control board, and an engaging portion inserted into the attaching hole and engaged with other face of the control board, wherein each of the engaging portions is formed with a split groove in a shape of a straight line opened at a front end thereof and the respective support bosses are provided at the support member by avoiding the split grooves of the support bosses disposed at two ends of straight lines connecting the corners of the imaginary polygon from being disposed on the same straight lines.

Abstract: A rotational speed of an electric motor 12 is memorized at a memory unit 21 as a set rotational speed for allowing a minimum required volume of brake fluid to be discharged from the pumps in a state where the output hydraulic pressure of the master cylinder is highest, and an energizing duty ratio for the electric motor 12 which is designed so as to rotate the electric motor 12 at the set rotational speed is determined at a duty ratio determining unit 22 in response to an applied voltage detected at a voltage detecting unit 20. A motor control unit 23 controls the energizing of the electric motor 12 from a battery 18 in accordance with the energizing duty ratio determined at the duty ratio determining unit 22.