WO2016009968A1 - ブレーキ装置及びマスタシリンダ - Google Patents
ブレーキ装置及びマスタシリンダ Download PDFInfo
- Publication number
- WO2016009968A1 WO2016009968A1 PCT/JP2015/069936 JP2015069936W WO2016009968A1 WO 2016009968 A1 WO2016009968 A1 WO 2016009968A1 JP 2015069936 W JP2015069936 W JP 2015069936W WO 2016009968 A1 WO2016009968 A1 WO 2016009968A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- brake device
- port
- housing
- master cylinder
- brake
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/16—Master control, e.g. master cylinders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/16—Master control, e.g. master cylinders
- B60T11/165—Single master cylinders for pressurised systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/16—Master control, e.g. master cylinders
- B60T11/22—Master control, e.g. master cylinders characterised by being integral with reservoir
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/16—Master control, e.g. master cylinders
- B60T11/236—Piston sealing arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
- B60T13/142—Systems with master cylinder
- B60T13/145—Master cylinder integrated or hydraulically coupled with booster
- B60T13/146—Part of the system directly actuated by booster pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/16—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using pumps directly, i.e. without interposition of accumulators or reservoirs
- B60T13/161—Systems with master cylinder
- B60T13/165—Master cylinder integrated or hydraulically coupled with booster
- B60T13/166—Part of the system directly actuated by booster pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/171—Detecting parameters used in the regulation; Measuring values used in the regulation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
- B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
- B60T8/3675—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units
- B60T8/368—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units combined with other mechanical components, e.g. pump units, master cylinders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2220/00—Monitoring, detecting driver behaviour; Signalling thereof; Counteracting thereof
- B60T2220/04—Pedal travel sensor, stroke sensor; Sensing brake request
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
- B60T8/4081—Systems with stroke simulating devices for driver input
Definitions
- the present invention relates to a brake control device and a master cylinder that apply braking force to a vehicle.
- Patent Document 1 Conventionally, the technology described in Patent Document 1 is known as a brake device.
- the master cylinder unit and the hydraulic control unit are fixed with bolts, and piping and the like are eliminated to reduce the size.
- the present invention provides a brake device that can be reduced in size and weight.
- the brake device of the present invention includes one side surface of a master cylinder housing having a first port that connects the inside and outside of the cylinder, and an oil passage through which brake fluid that flows from the second port that connects to the first port flows.
- the liquid tightness can be improved by increasing the surface pressure of the connection portion between the first port and the second port.
- the brake device can be reduced in weight by providing a space.
- FIG. 1 is a sectional view taken along line AA of a brake device according to a first embodiment. It is a top view showing the brake device of Example 1. FIG. It is a bottom view showing the brake device of Example 1.
- FIG. 2 is a cross-sectional view of the brake device according to the first embodiment taken along line BB.
- FIG. 3 is a cross-sectional view taken along the line CC of the brake device according to the first embodiment.
- FIG. 3 is an internal layout diagram of an ECU provided in the brake device according to the first embodiment.
- FIG. 2 is a partial enlarged perspective view of a stroke sensor provided in the brake device according to the first embodiment. It is a disassembled perspective view of the brake device of Example 1.
- FIG. FIG. 3 is a perspective view illustrating a configuration of a first unit housing according to the first embodiment. It is the perspective view which looked at the 2nd unit housing of Example 1 from the 1st attachment surface 5b1 side.
- FIG. 3 is a plan view when the first unit housing and the second unit housing of Example 1 are assembled.
- FIG. 6 is a perspective view illustrating a configuration of a first unit housing of Example 2.
- FIG. 10 is a perspective view illustrating a configuration of a second unit housing according to the second embodiment.
- FIG. 1 is a diagram illustrating a schematic configuration of a brake device according to a first embodiment together with a hydraulic circuit.
- the brake device 1 is a brake system for an electric vehicle such as a hybrid vehicle provided with an electric motor (generator) in addition to an engine or an electric vehicle provided only with an electric motor (generator) as a prime mover for driving wheels. It is a hydraulic brake device applied to.
- regenerative braking that brakes the vehicle by regenerating kinetic energy of the vehicle into electric energy can be executed by a regenerative braking device including a motor (generator).
- the brake device 1 supplies a brake fluid as a working fluid to a brake operation unit provided on each wheel FL to RR of the vehicle to generate a brake fluid pressure (wheel cylinder fluid pressure). A hydraulic braking force is applied to.
- the brake operation unit including the wheel cylinder 8 is a so-called disc type.
- the brake operating unit is arranged with a brake disc, which is a brake rotor that rotates integrally with the tire, and a predetermined clearance (gap or buzz) with respect to the brake disc, and is controlled by moving by wheel cylinder hydraulic pressure and contacting the brake disc.
- a caliper (hydraulic brake caliper) including a brake pad for generating power.
- the brake device 1 has two systems (primary P system and secondary S system) of brake piping.
- an X piping format is adopted as the brake piping format.
- the suffixes P and S are added to the end of each symbol.
- the brake device 1 includes a brake pedal 2 as a brake operation member that receives an input of a brake operation of a driver (driver), and a reservoir tank (a low-pressure portion that is a brake fluid source that stores brake fluid and is released to atmospheric pressure). 4) and a master cylinder that is connected to the brake pedal 2 and is supplied with brake fluid from the reservoir 4, and is activated by the driver operating the brake pedal 2 to generate brake fluid pressure (master cylinder pressure). It has a unit 5 and a pump unit 7 that generates hydraulic pressure by a motor M.
- the master cylinder unit 5 is supplied with a brake fluid from the master cylinder unit 50 that generates the master cylinder pressure by the operation of the brake pedal 2 and the reservoir 4 or the master cylinder unit 50, and is independent of the brake operation by the driver.
- a hydraulic control unit 60 including a plurality of solenoid valves for generating the above and an electronic control unit (hereinafter referred to as ECU) 100 for controlling the operation of the plurality of solenoid valves and the pump unit 7.
- ECU electronice control unit
- the brake device 1 does not include an engine negative pressure booster that boosts the brake operation force using the intake negative pressure generated by the vehicle engine.
- the push rod 30 is rotatably connected to the brake pedal 2.
- the master cylinder unit 50 is a tandem master cylinder.
- the master cylinder unit 50 includes a primary piston 54P connected to the push rod 30 and a free piston type secondary piston 54S as a master cylinder piston that moves in the axial direction in response to a driver's braking operation.
- the primary piston 54P is provided with a stroke sensor 90 that detects a pedal stroke. Details of the stroke sensor 90 will be described later.
- the hydraulic pressure control unit 60 is provided between the wheel cylinder 8 and the master cylinder unit 50.
- the hydraulic pressure control unit 60 controls each wheel cylinder 8 so that the master cylinder pressure or the control hydraulic pressure can be supplied individually.
- the hydraulic pressure control unit 60 has a plurality of control valves as actuators for generating the control hydraulic pressure.
- a solenoid valve or the like opens and closes in response to a control signal to control the flow of brake fluid.
- the hydraulic pressure control unit 60 can control to increase the wheel cylinder 8 by the hydraulic pressure generated by the pump unit 7 in a state where the communication between the master cylinder unit 50 and the wheel cylinder 8 is cut off.
- the hydraulic pressure control unit 60 includes a stroke simulator 27 that creates a pedal reaction force (pedal reaction force and pedal stroke amount) when brake fluid flows from the master cylinder unit 50 in response to a driver's brake operation.
- the stroke simulator 27 may be provided integrally as a part of the hydraulic pressure control unit 60, or may be provided separately from the hydraulic pressure control unit 60.
- the master cylinder unit 5 includes hydraulic pressure sensors 91 to 93 for detecting the discharge pressure of the pump unit 7 and the master cylinder pressure.
- the pump unit 7 is configured separately from the master cylinder unit 5.
- the pump unit 7 is connected to the master cylinder unit 5 and the reservoir 4 by pipes (connection pipe 10R, suction pipe 12a, discharge pipe 13a).
- the pump unit 7 sucks the brake fluid in the reservoir 4 by the rotational drive of the motor M and discharges it toward the wheel cylinder 8.
- the pump unit 7 employs an external gear pump (hereinafter referred to as a gear pump 70) that is excellent in sound vibration performance and the like.
- the pump unit 7 is used in common in both systems.
- the pump unit 7 is driven by one motor M.
- the motor M may be a brushless motor or a brushed motor.
- the ECU 100 receives the detection values sent from the stroke sensor 90 and the hydraulic pressure sensors 91 to 93 and the information about the running state sent from the vehicle.
- the ECU 100 controls each actuator of the hydraulic pressure control unit 60 based on a built-in program. Specifically, the ECU 100 controls the opening / closing operation of the electromagnetic valve that switches the communication state of the oil passage and the rotation speed of the motor M that drives the pump unit 7 (that is, the discharge amount of the pump unit 7).
- the brake device has a boost control for reducing the brake operation force, an anti-lock brake control (hereinafter referred to as ABS) for suppressing wheel slip due to braking, a vehicle motion control ( Brake control for vehicle behavior stabilization control such as skidding prevention (hereinafter referred to as VDC), automatic brake control such as preceding vehicle follow-up control, and so on to achieve target deceleration (target braking force) in cooperation with regenerative braking Regenerative cooperative brake control that controls the wheel cylinder hydraulic pressure is realized.
- the hydraulic pressure control unit 60 is driven using the discharge pressure of the pump unit 7 as a hydraulic pressure source when the driver operates the brake.
- the boost control In the boost control, a wheel cylinder hydraulic pressure higher than the master cylinder pressure is created, and a hydraulic braking force that is insufficient for the driver's brake operation force is generated.
- the boost control exhibits a boost function that assists the brake operation. That is, the brake device assists the brake operation force by operating the hydraulic pressure control unit 60 and the pump unit 7 instead of the engine negative pressure booster.
- a hydraulic braking force that is insufficient for the regenerative braking force by the regenerative braking device is generated to generate the braking force requested by the driver.
- the master cylinder unit 50 is connected to the wheel cylinder 8 via a first oil passage 11 described later, and is a first hydraulic pressure source capable of increasing the wheel cylinder hydraulic pressure.
- the master cylinder part 50 can pressurize the wheel cylinders 8a and 8d through the P system oil passage (first oil passage 11P) by the master cylinder pressure generated in the first liquid chamber 51P.
- the master cylinder unit 50 can pressurize the wheel cylinders 8b and 8c through the first oil passage 11S of the S system by the master cylinder pressure generated by the second liquid chamber 51S.
- the pistons 54P and 54S of the master cylinder portion 50 are inserted so as to be axially movable along the inner peripheral surface of the bottomed cylindrical cylinder.
- the cylinder includes a discharge port (supply port) 501 that is connected to the hydraulic pressure control unit 60 so as to be able to communicate with the wheel cylinder 8, and a replenishment port 502 that is connected to the reservoir 4 and communicates therewith.
- a coil spring 56P as a return spring is installed in a compressed state in the first liquid chamber 51P between the pistons 54P and 54S.
- a coil spring 56S is installed in a compressed state in the second liquid chamber 51S between the piston 54S and the axial end of the cylinder.
- a discharge port 501 is always open in the first and second liquid chambers 51P and 51S.
- the hydraulic pressure control unit 60 is provided in the first oil passage 11 and the first oil passage 11 that connect the discharge port 501 (first and second fluid chambers 51P, 51S) of the master cylinder portion 50 and the wheel cylinder 8.
- the normally open shut-off valve 21 and the normally open pressure-increasing valve provided on the wheel cylinder 8 side of the first oil passage 11 corresponding to the wheels FL to RR (in the oil passages 11a to 11d).
- SOL / V IN suction oil passage 12 that connects a liquid reservoir 12r provided in the suction portion of the pump unit 7 and a decompression oil passage 15 described later
- a second simulator oil passage 17 connected via a simulator-in valve 31 and a stroke simulator-out valve 32.
- a liquid reservoir 12r is provided at a site where the connection pipe 10R from the reservoir 4 is connected to the suction oil passage 12 of the pump unit 7.
- the discharge oil passages 13P and 13S constitute a communication passage that connects the first oil passage 11P of the P system and the first oil passage 11S of the S system.
- the pump unit 7 is connected to the wheel cylinders 8a to 8d via the communication passages (discharge oil passages 13P and 13S) and the first oil passages 11P and 11S.
- the pump unit 7 is a second hydraulic pressure source capable of increasing the wheel cylinder hydraulic pressure by discharging brake fluid to the communication passage (discharge oil passages 13P and 13S).
- At least one of the shutoff valve 21, SOL / V IN22, communication valve 23P, pressure regulating valve 24, and pressure reducing valve 25 of each system is supplied to the solenoid.
- This is a proportional control valve in which the opening of the valve is adjusted according to the current.
- the other valve is an on / off valve in which opening and closing of the valve is controlled to be switched in a binary manner.
- a proportional control valve can also be used as the other valve.
- the shutoff valve 21 is provided on the first oil passages 11P and 11S.
- the bypass oil passage 120 is provided in parallel with the first oil passage 11 by bypassing the SOL / V IN22. Further, the bypass oil passage 120 has a check valve 220 that allows only the flow of brake fluid from the wheel cylinder 8 side to the master cylinder 5 side.
- the first simulator oil passage 16 is provided with a fluid pressure sensor 91 that detects the fluid pressure at this location (the fluid pressure in the stroke simulator 27 and the master cylinder pressure). Between the shutoff valve 21 and the SOL / V IN22 in the first oil passage 11, a hydraulic pressure sensor 92 that detects the hydraulic pressure (foil cylinder hydraulic pressure) at this location is provided. Between the check valve 130 and the communication valve 23 in the discharge oil passage 13P, a hydraulic pressure sensor 93 for detecting the hydraulic pressure (pump discharge pressure) at this location is provided.
- the stroke simulator 27 is divided into two chambers (a main chamber R1 and a sub chamber R2) and a piston 27a provided in the chamber R so as to be movable in the axial direction, and the stroke simulator 27 is compressed in the sub chamber R2.
- the first spring 27b1 and the first spring which are elastic members that are installed in a state and constantly urge the piston 27a toward the main chamber R1 (the direction in which the volume of the main chamber R1 is reduced and the volume of the sub chamber R2 is increased)
- a retainer member 27b2 that holds 27b1 and a second spring 27b3 that is an elastic member that constantly urges the retainer member 27b2 toward the main chamber R1 are provided.
- the retainer member 27b2 is provided with a first damper 27d1
- the plug member 27c is provided with a second damper 27d2 (see FIG. 8).
- the first spring 27b1 and the second spring 27b3 are collectively referred to as a spring 27b.
- the brake that connects the reservoir 4 and the wheel cylinder 8 The system (suction oil passage 12, discharge oil passage 13, etc.) is a so-called brake-by-wire that creates wheel cylinder hydraulic pressure by the hydraulic pressure generated by the pump unit 7 and realizes boost control, regenerative cooperative control, etc. Configure the system.
- the stroke simulator 27 performs at least the first oil passage 11S from the master cylinder portion 50 (first liquid chamber 51S).
- the brake fluid flowing out into the main chamber R1 is caused to flow into the main chamber R1 through the first simulator oil passage 16, and a pedal reaction force is created.
- the brake fluid flows into the main chamber R1 from the master cylinder 5 (discharge port 501P) through the oil passage (the first oil passage 11S and the first simulator oil passage 16).
- the brake fluid is discharged from the sub chamber R2 to the intake oil passage 12 through the second simulator oil passage 17.
- the piston 27a returns to the initial position by the biasing force (elastic force) of the spring 27b.
- the stroke simulator 27 simulates the fluid rigidity of the wheel cylinder 8 by sucking the brake fluid from the master cylinder 5 in this way, and reproduces the pedal depression feeling.
- the ECU 100 constitutes a hydraulic pressure control unit that controls the hydraulic pressure of the wheel cylinder 8 by operating the pump unit 7 and the electromagnetic valve based on various information.
- the ECU 100 includes a brake operation amount detection unit 101, a target wheel cylinder hydraulic pressure calculation unit 102, a pedal force brake generation unit 103, a boost control unit 104, and a boost control switching unit 105.
- the brake operation amount detection unit 101 receives the input of the detection value of the stroke sensor 90 and detects the displacement amount (pedal stroke) of the brake pedal 2 as the brake operation amount.
- a target foil cylinder hydraulic pressure calculation unit 102 calculates a target foil cylinder hydraulic pressure.
- a predetermined boost ratio that is, an ideal relationship characteristic between the pedal stroke and the driver's required brake hydraulic pressure (vehicle deceleration G requested by the driver) is obtained.
- the target wheel cylinder hydraulic pressure is calculated in relation to the regenerative braking force.
- the target wheel is such that the sum of the regenerative braking force input from the control unit of the regenerative braking device and the hydraulic braking force corresponding to the target wheel cylinder hydraulic pressure satisfies the vehicle deceleration required by the driver.
- the target wheel cylinder hydraulic pressure of each wheel FL to RR is calculated so as to realize a desired vehicle motion state based on, for example, the detected vehicle motion state amount (lateral acceleration or the like).
- the pedal force brake generator 103 is configured so that the stroke simulator 27 does not function by controlling the shut-off valve 21 in the opening direction, the stroke simulator in valve 31 in the opening direction, and the stroke simulator out valve 32 in the closing direction. Realizes a pedal brake that creates wheel cylinder hydraulic pressure using the master cylinder pressure.
- the boost control unit 104 controls the shut-off valve 21 in the closing direction so that the state of the hydraulic pressure control unit 60 becomes a state in which the wheel cylinder hydraulic pressure can be generated by the pump unit 7 and executes the boost control. .
- the boost control unit 104 controls each actuator to realize a target wheel cylinder hydraulic pressure.
- the ECU 100 causes the stroke simulator 27 to function by closing the stroke simulator in valve 31 and controlling the stroke simulator out valve 32 in the opening direction.
- the boost control switching unit 105 controls the operation of the master cylinder unit 5 based on the calculated target wheel cylinder hydraulic pressure, and switches between the pedal brake and the boost control. Specifically, when the brake operation amount detection unit 101 detects the start of the brake operation, the calculated target wheel cylinder hydraulic pressure is a predetermined value (for example, equivalent to the maximum value of the vehicle deceleration G that occurs during normal braking other than during sudden braking). In the following cases, the wheel cylinder hydraulic pressure is generated by the pedal force brake generating unit 103. On the other hand, when the target wheel cylinder hydraulic pressure calculated at the time of the brake depression operation becomes higher than the predetermined value, the boost control unit 104 generates the wheel cylinder hydraulic pressure.
- FIG. 2 and 3 are perspective views showing the brake device of the first embodiment
- FIG. 4 is a front view showing the brake device of the first embodiment
- FIG. 5 is a rear view showing the brake device of the first embodiment
- FIG. FIG. 7 is a right side view showing the brake device of the first embodiment
- FIG. 8 is a cross-sectional view taken along the line AA of the brake device of the first embodiment
- FIG. 9 is the brake device of the first embodiment.
- FIG. 10 is a bottom view showing the brake device according to the first embodiment
- FIG. 11 is a cross-sectional view taken along the line BB of the brake device according to the first embodiment
- FIG. 12 is a cross-sectional view taken along the line CC of the brake device according to the first embodiment.
- FIG. 10 is a bottom view showing the brake device according to the first embodiment
- FIG. 11 is a cross-sectional view taken along the line BB of the brake device according to the first embodiment
- FIG. 12 is a cross-sectional view taken along the line
- FIG. 13 is an internal layout diagram of the ECU provided in the brake device of the first embodiment
- FIG. 14 is an enlarged perspective view of a stroke sensor provided in the brake device of the first embodiment
- FIG. 15 is an exploded perspective view of the brake device of the first embodiment.
- the pump unit 7 is attached to a predetermined position on the vehicle body side. In the first embodiment, the mounting position of the pump unit 7 is not particularly specified. In addition, as an attachment position, for example, the vehicle vertical direction lower part of a brake device in the engine room or other space that can be effectively used can be cited.
- the installed pump unit 7 is connected to the brake device by piping or wiring.
- the brake device 1 includes a first unit housing 5a that accommodates the master cylinder portion 50 and the stroke simulator 27, and a second unit housing 5b that accommodates various solenoid valves 20, hydraulic pressure sensors, and the like and has a plurality of oil passages formed therein. And ECU 100 for outputting control command signals calculated based on various sensor signals and the like to various electromagnetic valves 20.
- the first unit housing 5a has a first side surface 5a6 and a second side surface 5a7.
- the first side surface 5a6 faces the second unit housing 5b, and has a shape that bulges into a substantially cylindrical shape on the second unit housing 5b side, or a flat surface that is scraped flat.
- the second side surface 5a7 is opposed to the first side surface 5a6, and has a plurality of shapes bulging in a substantially cylindrical shape on the side opposite to the second unit housing 5b side.
- the first unit housing 5a has a master cylinder housing portion 5a2 for housing the master cylinder portion 50 therein, and a stroke simulator housing portion 5a3 for housing the stroke simulator 27 therein.
- FIG. 16 is a perspective view showing the configuration of the first unit housing of the first embodiment.
- the first side surface 5a6 has a plurality of connection ports 5a9 connected to an oil passage formed in the first unit housing 5a.
- the connection port 5a9 is formed in a connection portion 5a91 that protrudes from the first side surface 5a6 in a substantially cylindrical shape.
- the connection port 5a9a arranged at the upper part in FIG. 16 of the first side face 5a6 and the connection port 5a9c arranged at the lower part have one connection part 5a91 with respect to one connection port 5a9. Is formed.
- the upper left portion of the connecting portion 5a91 in other words, the connecting portion 5a91 far from the brake pedal is adjacent to a first flange portion 5a11 described later, and the first flange portion 5a11 and the connecting portion 5a91 are integrated. Uplift. Since the connection port 5a9 and the first flange portion 5a11 are close to each other, it is difficult to ensure the thickness of the first flange portion 5a11 and the connection portion 5a91. However, both the flange strength and the connection portion strength can be ensured by forming the two integrally raised.
- connection portions 5a91 of the three connection ports 5a9b that are arranged close to each other at the approximate center of the first side surface 5a6 in FIG. 16 are formed so as to rise integrally with the adjacent connection portions 5a91.
- the end of the connection portion 5a91 has a connection end surface 5a92 that comes into contact with the first mounting surface 5b1 of the second unit housing 5b in which a port 5b9 described later is formed.
- connection end face 5a92 of each connection port 5a9 is formed at a position that is substantially in the same plane.
- the raised connection part 5a91 and the end face of the first flange part 5a11 described later are all formed at substantially the same height (located in the same plane).
- the stroke simulator 27 is housed in a cylinder portion drilled in the first unit housing 5a. This cylinder part is sealed by a plug member 27c. Further, on the push rod 30 side of the first unit housing 5a, a flange portion 5a4 for attaching the brake device 1 to the instrument panel of the vehicle is formed. The brake device 1 is attached to the instrument panel with attachment bolts 5a41 formed at the four corners of the flange portion 5a4. A rubber boot 5a5 is attached to the outer periphery of the push rod 30 to prevent dust from entering. A reservoir 4 is attached above the first unit housing 5a.
- the first unit housing 5a has a first flange portion 5a11 for fixing the first unit housing 5a and the second unit housing 5b with fixing bolts 5a1.
- the first unit housing 5a of the first embodiment has flange portions 5a11 at four places.
- a flat surface portion 5a61 (meat stealing portion) in which a substantially cylindrical bulging portion is cut off flat.
- the flat surface portion 5a61 has a flat sensor mounting surface 5a62 which is a recess that is further deeply cut.
- a stroke sensor 90 is attached to the sensor attachment surface 5a62 and the flat surface portion 5a61.
- a holder member 90a is attached to a primary piston 54P connected to the push rod 30.
- a permanent magnet 90b is held on the outer periphery of the holder member 90a.
- the permanent magnet 90b strokes with a predetermined correlation with the pedal stroke amount of the brake pedal 2.
- a hall element is accommodated in the stroke sensor 90.
- the stroke sensor 90 detects the stroke amount by detecting a change in magnetic flux due to the stroke of the permanent magnet 90b with a Hall element.
- FIG. 14 is a perspective view showing a mounting state of the stroke sensor according to the first embodiment.
- the stroke sensor 90 has a detection unit 91 with a built-in Hall element and a bus bar (wiring made of a plate-shaped metal piece) that is a wiring (signal line) for transmitting an electrical signal detected by the detection unit 91.
- the first pipe 94 and the second pipe 95 are made of a resin material having higher rigidity than the bus bar and surround the bus bar.
- a ring groove 95a is formed in a portion of the outer periphery of the second pipe 95 that is inserted into the through hole 5c of the second unit housing 5b.
- An O-ring 95b is installed in the ring groove 95a.
- the O-ring 95b defines the first mounting surface 5b1 side and the second mounting surface 5b2 side of the second unit housing 5b in a liquid-tight manner.
- the detection unit 91 includes a terminal concentrating portion 91a having a substantially oval cross section slightly raised from the sensor mounting surface 5a62, and a sensor unit 91b having a substantially rectangular cross section whose thickness decreases toward the flange portion 5a4 in close contact with the sensor mounting surface 5a62.
- Sensor fixing flanges 92 are provided on both sides of the sensor portion 91b.
- the sensor unit 91b is fixed by a sensor fixing screw 98 so as to be in close contact with the sensor mounting surface 5a62.
- the terminal aggregation portion 91a and the sensor portion 91b are fixed so as to be positioned on the sensor attachment surface 5a62.
- a first pipe 94 having a substantially circular cross section and a flat contact surface with the flat surface portion 5a61 is connected to the opposite side of the terminal aggregation portion 91a to the sensor portion 91b side.
- pipe fixing flanges 93 are provided on both sides of the first pipe 94.
- the stroke sensor 90 is fixed by a sensor fixing screw 98 so as to be in close contact with the flat surface portion 5a61.
- the second pipe 95 provided at the end portion 97 of the first pipe 94 has a substantially circular cross section, and is provided so as to be able to stand substantially vertically with respect to the flat portion 5a61.
- connection terminal 96 and the second pipe 95 Even if a force perpendicular to the flat surface portion 5a61 acts on the connection terminal 96 and the second pipe 95, the end portion 97 is supported by the flat surface portion 5a61. Further, even if a force in the falling direction acts on the connection terminal 96 or the second pipe 95, the pipe fixing flange 93 prevents the second pipe 95 from falling.
- the second pipe 95 stands vertically at a position corresponding to a through hole 5c formed in the second unit housing 5b described later at the time of assembly.
- FIG. 17 is a perspective view of the second unit housing of the first embodiment as viewed from the first mounting surface 5b1 side.
- the second unit housing 5b is composed of a substantially rectangular parallelepiped aluminum block, and the first unit housing 5a is attached to the second housing 5b with bolts 5a1 and is positioned opposite the first mounting surface 5b1. It has a formed second attachment surface 5b2, and an oil passage connection surface 5b3 formed on the reservoir 4 side between the first attachment surface 5b1 and the second attachment surface 5b2 (see FIGS. 1 and 2).
- a plurality of oil passages are drilled inside the second unit housing 5b, and mounting holes for mounting various electromagnetic valves 20 and hydraulic pressure sensors 91, 92, 93 are formed on the second mounting surface 5b2. (See FIGS.
- a plurality of oil passages are formed in the oil passage connection surface 5b3, and pipes to the respective wheel cylinders 8 are connected.
- the ECU 100 including the control board 105 that calculates a control amount based on the coil of the electromagnetic valve 20 and various sensor signals and outputs a control command is attached to the second attachment surface 5b2.
- the through hole 5c through which the second pipe 95 of the stroke sensor 90 passes is opened at a position slightly offset to the brake pedal side from the center of the second unit housing 5b.
- the first mounting surface 5b1 has four female screw holes 5b14 formed with female screws that mesh with the male screws of the bolts 5a1 on the inner periphery.
- a plurality of connection ports 5b9a, 5b9b, 5b9c (hereinafter collectively referred to as connection port 5b9) connected to connection port 5a9 of first unit housing 5a by abutting on connection portion 5a91 on first mounting surface 5b1 Is formed).
- connection port 5b9 On the outer periphery of the opening of each connection port 5b9, a step for accommodating a seal member or the like is formed.
- FIG. 18 is a plan view when the first unit housing and the second unit housing of Example 1 are assembled.
- This plan view shows a state in which components such as the ECU 100, the reservoir 4, and the stroke sensor 90 are not attached.
- the female screw hole 5b14 and the connection port 5a9 are formed in substantially the same height plane. Therefore, when the connecting portion 5a91 raised on the first side surface 5a6 of the first unit housing 5a and the end surface of the first flange portion 5a11 abut on the first mounting surface 5b1, a space SPC is formed around the connecting portion 5a91.
- the reservoir side recess 5b11 is formed on the first mounting surface 5b1 by scraping the aluminum material toward the second mounting surface 5b2 (see FIG. 9).
- the reservoir-side recess 5b11 is open to the oil passage connecting surface 5b3 side.
- the reservoir-side recess 5b11 is formed on the oil passage connection surface 5b3 by scraping the aluminum material toward the lower surface 5b4. This avoids interference between the lower part of the reservoir 4 and the second unit housing 5b. Further, the distance between the reservoir 4 and the first unit housing 5a is shortened, and the entire apparatus is reduced in size.
- the first attachment surface 5b1 is formed with a connector-side recess 5b12 in which the aluminum material is scraped off toward the second attachment surface 5b2.
- the connector-side recess 5b12 is formed at a position adjacent to the second connector portion 102, and the connector-side recess 5b11 opens on the lower surface 5b4 side facing the oil passage connection surface 5b3. Accordingly, when the connector is connected to the second connector portion 102, it is possible to avoid interference between the operator's hand and the second unit housing 5b. Therefore, the assembling property is improved.
- the first attachment surface 5b1 is formed with a sensor-side recess 5b13 (meat stealing portion) in which the aluminum material is scraped toward the second attachment surface 5b2.
- the sensor-side recess 5b13 is formed corresponding to the position where the stroke sensor 90 is installed, and the sensor-side recess 5b13 opens on the brake pedal side side surface 5b5 side of the second unit housing 5b.
- a space SPC is formed between the first unit housing 5a and the second unit housing 5b.
- the ECU 100 includes a control board 105 housed in a case formed of a resin material and equipped with a microcomputer and the like, and a first connector portion 101 to which wiring for outputting a drive signal from the control board 105 to the motor M is connected. And a second connector portion 102 to which a CAN communication line for transmitting and receiving information between the control board 105 and another controller is connected.
- the stroke sensor 90 and the various solenoid valves 20 are arranged at positions facing each other via the second unit housing 5b.
- the stroke sensor 90 attached to the first unit housing 5a, the second pipe 95 passes through the through hole 5c when the second unit housing 5b is assembled. Then, when the connection terminal 96 reaches the control board 105, it is electrically connected. In this way, the electrical connection between the externally provided stroke sensor 90 and the control board 105 can be directly connected internally, as with other solenoid valves and sensors.
- the stroke sensor 90 can be installed at a low cost without the need for forming.
- FIG. 13 is a view of the ECU according to the first embodiment as viewed from the outside with the base of the ECU removed.
- a metal plate 110 is installed inside the ECU 100.
- the metal plate 110 is provided with a heat sink 111 for radiating heat generated by the solenoid SOL.
- the metal plate 110 is formed with through holes at positions corresponding to the respective electromagnetic valves and sensors. Solenoids SOL surrounding the plunger portion are installed on the plunger portion of each solenoid valve protruding from the through hole.
- the solenoid SOL is provided with a terminal extending in a direction perpendicular to the paper surface, and reaches the control board 105 (not shown) to electrically connect the solenoid SOL and the control board 105.
- a plate through hole 5c1 is formed at a position near the center of the metal plate 110 and closer to the brake pedal.
- the second piping 95 of the stroke sensor 90 is connected to the control board 105 by protruding from the plate through hole 5c1.
- the stroke sensor 90 is assembled to the first unit housing 5a, and then the second unit housing 5b and the first unit housing 5a are assembled. At this time, the second pipe 95 of the stroke sensor 90 is assembled so as to penetrate the through hole 5c of the second unit housing 5b.
- the first side surface 5a6 of the first unit housing 5a is connected to connect the oil passage in a liquid-tight manner in order to connect the brake fluid flowing out from the first unit housing 5a to the oil passage formed in the second unit housing 5b.
- Port 5a9 (first port) is formed.
- a port 5b9 (second port) that opens to a position facing the connection port 5a9 and connects to the connection portion 5a91 of the connection port 5a9 via the O-ring O-Ring Is formed.
- connection terminal 96 of the stroke sensor 90 is connected to the control board 105 so as to pierce into the terminal hole provided in the control board 105. And each terminal part is electrically connected by soldering.
- a primary piston 54P and a secondary piston 54S (piston) that stroke in an axial direction in a cylinder formed inside via a push rod 30 (rod) that operates according to a driver's brake pedal operation are provided.
- the first unit housing 5a (master cylinder housing) with the connection port 5a9 (first port) that connects the inside and the outside, the port 5b9 (second port) that connects to the connection port 5a9, and the flow from the port 5b9 It includes an oil passage through which brake fluid flows and an electromagnetic valve 20 that connects and disconnects the oil passage, and the first side surface 5a6 (one side surface) side of the first unit housing 5a is attached to the first attachment surface 5b1 (one side surface) side.
- the second unit housing 5b (valve housing), and the connection port between the first mounting surface 5b1 of the second unit housing 5b and the first side surface 5a6 of the first unit housing 5a
- a brake device comprising: a connecting portion 5a91 that connects the port 5a9 and the port 5b9; and a space SPC that opens around the connecting portion 5a91 to the outside of each housing. Therefore, the liquid tightness can be improved by increasing the surface pressure of the connection portion between the connection port 5a9 and the port 5b9. Moreover, the weight of the brake device can be reduced by providing the space SPC.
- a stroke sensor 90 that detects stroke amounts in the axial direction of the primary piston 54P and the secondary piston 54S is arranged in the space SPC.
- the second unit housing 5b is mounted on the second mounting surface 5b2 (other side) side and receives the drive of the solenoid valve 20 and the output of the stroke sensor 90.
- a brake device comprising: an ECU 100 (control unit); and a through hole 5c provided in the second unit housing 5b for passing a signal line for transmitting the output of the stroke sensor 90 to the ECU 100.
- the stroke sensor 90 and the ECU 100 can be internally connected in the same manner as the other solenoid valves 20 and the like, and the cost increase can be suppressed.
- the ECU 100 includes a first connector unit 101 and a second connector that electrically connect the control board 105 (controller), the control board 105 and the stroke sensor 90, and the outside.
- a brake device comprising: a portion 102 (connector). Therefore, since electric power can be supplied to the control board 105 from the outside, electric power can be supplied from the control board 105 to the stroke sensor 90, and an increase in cost due to separately installing a power supply line for the stroke sensor 90 can be avoided. .
- the stroke sensor 90 is a Hall element (magnetic sensor) that detects the stroke of the primary piston 54P based on a magnetic change
- the first unit housing 5a is a non-magnetic material.
- the brake device is characterized in that the stroke sensor 90 is attached to a sensor attachment surface 5a62 (wall) of the first unit housing 5a. That is, since the first unit housing 5a is a non-magnetic material, the accuracy of detecting the movement of the primary piston 54P based on the magnetic change is improved while eliminating the magnetic influence. Further, since the stroke sensor 90 is attached to the first unit housing 5a, the distance to the primary piston 54P can be shortened, and the detection accuracy can be improved.
- the brake device according to (6) wherein the signal line of the stroke sensor 90 is arranged in the space SPC. Therefore, the space SPC can be used effectively and the brake device can be downsized.
- the signal line extends in the space SPC along the first unit housing 5a, the first pipe 94 (extension portion), and the first pipe 94 and the second unit housing.
- a brake device comprising a second pipe 95 (connection end) that stands in the direction of 5b and is connected to the ECU 100 from the axial direction to transmit a signal.
- the brake device is characterized in that the connection portion 5a91 (protrusion portion) protrudes into the space 5 and the space SPC is formed around the connection portion 5a91. Therefore, a space can be easily formed by casting.
- the first side surface 5a6 of the second unit housing 5b is provided with a port 5b9, a contact surface that contacts the connecting portion 5a91, and a sensor side that is recessed from the contact surface toward the second mounting surface 5b2 side.
- a brake device comprising a recess 5b13 (meat stealing portion). Thus, the weight of the brake device can be reduced.
- a primary piston 54P and a secondary piston 54S that stroke in an axial direction in a cylinder formed inside via a push rod 30 (rod) that operates according to a driver's brake pedal operation;
- a second unit housing 5b (housing) having an oil passage formed inside and a port 5b9 (second port) connected to the connection port 5a9 is attached to 5a6, and the first side surface 5a6 of the master cylinder is configured.
- Primary piston 54P and secondary piston 54S that stroke in the axial direction in the cylinder formed inside according to the brake operation state of the driver, and connection port 5a9 (first 1 port), a first unit housing 5a (master cylinder housing), and a port 5b9 (second port) for introducing the brake fluid flowing out from the connection port 5a9 into an oil passage formed therein.
- a second unit housing 5b (housing) having a first mounting surface 5b1 (one side surface) for mounting on the first side surface 5a6 (one side surface) of the first unit housing 5a,
- a brake device comprising the first side surface 5a6 and the first attachment surface 5b1 side in contact with each other through each port portion, and a space SPC around the port portion.
- the liquid tightness can be improved by increasing the surface pressure of the connection portion between the connection port 5a9 and the port 5b9. Moreover, the weight of the brake device can be reduced by providing the space SPC.
- a stroke sensor 90 that detects an axial stroke amount of the primary piston 54P and the secondary piston 54S (piston) is arranged in the space SPC. . By arranging the stroke sensor 90 in the space SPC, the space can be used effectively.
- the second unit housing 5b includes an electromagnetic valve 20 for connecting and disconnecting the oil passage, and a second mounting surface 5b2 (other side) side of the second unit housing 5b.
- a ECU 100 (control unit) for receiving the drive of the electromagnetic valve 20 and the output of the stroke sensor 90. Therefore, the stroke sensor 90 and the ECU 100 can be internally connected in the same manner as the other solenoid valves 20 and the like, and the cost increase can be suppressed.
- FIG. 19 is a perspective view illustrating the configuration of the first unit housing of the second embodiment
- FIG. 20 is a perspective view illustrating the configuration of the second unit housing of the second embodiment.
- the raised connection portion 5a91 is formed on the first side surface 5a6 of the first unit housing 5a.
- the second embodiment is different in that the first side surface 5a6 of the first unit housing 5a is formed into a flat surface, while the raised connection portion 5b91 is formed on the first mounting surface 5b1 of the second unit housing 5b. .
- a fastening connection portion 5b90 is formed in which the female screw hole 5b14 is also raised in accordance with the rise of the connection portion 5b91.
- the fastening connecting portion 5b90 and the connecting portion 5b91 of the female screw hole 5b14 are formed in substantially the same height plane. Therefore, when the flat first side surface 5a6 of the first unit housing 5a contacts the first mounting surface 5b1, a space SPC similar to that shown in FIG. 18 is formed around the connection portion 5b91.
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Abstract
Description
本発明は、小型化及び軽量化を図ることが可能なブレーキ装置を提供するものである。
図1は、実施例1のブレーキ装置の概略構成を油圧回路と共に示す図である。ブレーキ装置1は、車輪を駆動する原動機として、エンジンのほか電動式のモータ(ジェネレータ)を備えたハイブリッド車や、電動式のモータ(ジェネレータ)のみを備えた電気自動車等の、電動車両のブレーキシステムに適用される液圧式ブレーキ装置である。このような電動車両においては、モータ(ジェネレータ)を含む回生制動装置により、車両の運動エネルギを電気エネルギに回生することで車両を制動する回生制動を実行可能である。ブレーキ装置1は、車両の各車輪FL~RRに設けられたブレーキ作動ユニットに作動流体としてのブレーキ液を供給してブレーキ液圧(ホイルシリンダ液圧)を発生させることで、各車輪FL~RRに液圧制動力を付与する。
以下、実施例1に記載のブレーキ装置の作用効果を列挙する。(1)運転者のブレーキペダル操作に応じて作動するプッシュロッド30(ロッド)を介して内部に形成されたシリンダ内を軸方向にストロークするプライマリピストン54P及びセカンダリピストン54S(ピストン)を備え、シリンダ内部と外部とを接続する接続ポート5a9(第1ポート)を備えた第1ユニットハウジング5a(マスタシリンダハウジング)と、接続ポート5a9と接続するポート5b9(第2ポート)と、ポート5b9から流入したブレーキ液が流通する油路と、この油路を断接する電磁弁20と、を備え、第1取り付け面5b1(一側面)側に第1ユニットハウジング5aの第1側面5a6(一側面)側が取り付けられる第2ユニットハウジング5b(バルブハウジング)と、第2ユニットハウジング5bの第1取り付け面5b1と第1ユニットハウジング5aの第1側面5a6との間に接続ポート5a9とポート5b9とを接続する接続部5a91と、接続部5a91の周りに各ハウジングの外部に開口する空間SPCと、を備えたことを特徴とするブレーキ装置。よって、接続ポート5a9とポート5b9との接続部の面圧を高めることで液密性を高めることができる。また、空間SPCを設けることでブレーキ装置の軽量化を図ることができる。
空間SPCにストロークセンサ90を配置することで、スペースを有効に活用できる。
(3)上記(2)に記載のブレーキ装置において、第2ユニットハウジング5bの第2取り付け面5b2(他側面)側に取り付けられ、電磁弁20の駆動及びストロークセンサ90の出力を受信するためのECU100(コントロールユニット)と、第2ユニットハウジング5bに設けられ、ストロークセンサ90の出力をECU100に伝達する信号線を通すための貫通孔5cと、を備えたことを特徴とするブレーキ装置。
よって、ストロークセンサ90とECU100とを他の電磁弁20等と同様に内部接続することが可能となり、コストアップを抑制できる。
(4)上記(3)に記載のブレーキ装置において、信号線はバスバーであることを特徴とするブレーキ装置。
よって、安価な構成で電気的接続を実現できる。
(5)上記(2)に記載のブレーキ装置において、ECU100は、制御基板105(コントローラ)と、制御基板105及びストロークセンサ90と外部とを電気的に接続する第1コネクタ部101及び第2コネクタ部102(コネクタ)と、を備えたことを特徴とするブレーキ装置。
よって、外部から制御基板105に電力を供給できるため、制御基板105からストロークセンサ90に電力を供給することができ、ストロークセンサ90用の電力供給線等を別途設置することによるコストアップを回避できる。
すなわち、第1ユニットハウジング5aが非磁性体であるため、磁気的な影響を排除しつつ、プライマリピストン54Pの動きを磁気的変化に基づき検知する精度が向上する。また、ストロークセンサ90を第1ユニットハウジング5aに取り付けるため、プライマリピストン54Pまでの距離を短縮することが可能となり、検出精度を向上できる。
(7)上記(6)に記載のブレーキ装置において、空間SPCにはストロークセンサ90の信号線が配置されていることを特徴とするブレーキ装置。
よって、空間SPCを有効利用することができ、ブレーキ装置の小型化を図ることができる。
(8)上記(7)に記載のブレーキ装置において、信号線は空間SPCにおいて第1ユニットハウジング5aに沿って延在する第1配管94(延在部)と第1配管94ら第2ユニットハウジング5bの方向に起立しECU100に対して軸方向から接続して信号を伝達する第2配管95(接続端部)を備えることを特徴とするブレーキ装置。
よって、ストロークセンサ90と制御基板105とを接続する際、第2配管95の軸方向に作用する力を第1ユニットハウジング5aの平面部5a61によって受けることが可能となり、組み付け性を向上できる。
(9)上記(8)に記載のブレーキ装置において、第2配管95は貫通孔5cに対応した位置となるように起立していることを特徴とするブレーキ装置。
よって、各ハウジングやECU100を組み付ける際の組み付け性を向上できる。
よって、第1ユニットハウジング5aの軽量化を図ることができる。
(11)上記(10)に記載のブレーキ装置において、第1ユニットハウジング5aは鋳造品であって、接続ポート5a9は第1ユニットハウジング5aの第1側面5a6に形成され、第2ユニットハウジング5b側に突出した接続部5a91(突出部)であり、空間SPCは接続部5a91周りに形成されていることを特徴とするブレーキ装置。
よって、鋳造により容易に空間を形成できる。
(12)第2ユニットハウジング5bの第1側面5a6には、ポート5b9が形成され、接続部5a91に当接する当接面と、当接面から第2取り付け面5b2側にくぼんで形成したセンサ側凹部5b13(肉盗み部)と、を備えたことを特徴とするブレーキ装置。
よって、ブレーキ装置の軽量化を図ることができる。
よって、接続ポート5a9とポート5b9との接続部の面圧を高めることで液密性を高めることができる。また、空間SPCを設けることでブレーキ装置の軽量化を図ることができる。
(14)上記(13)に記載のマスタシリンダにおいて、空間SPCにプライマリピストン54P及びセカンダリピストン54Sの軸方向のストローク量を検出するストロークセンサ90を配置したことを特徴とするマスタシリンダ。
空間SPCにストロークセンサ90を配置することで、スペースを有効に活用できる。
よって、接続ポート5a9とポート5b9との接続部の面圧を高めることで液密性を高めることができる。また、空間SPCを設けることでブレーキ装置の軽量化を図ることができる。
(16)上記(15)に記載のブレーキ装置において、空間SPCに、プライマリピストン54P及びセカンダリピストン54S(ピストン)の軸方向のストローク量を検出するストロークセンサ90を配置したことを特徴とするブレーキ装置。
空間SPCにストロークセンサ90を配置することで、スペースを有効に活用できる。
(17)上記(16)に記載のブレーキ装置において、第2ユニットハウジング5bには、油路を断接するための電磁弁20と、第2ユニットハウジング5bの第2取り付け面5b2(他側面)側に取り付けられ電磁弁20の駆動及びストロークセンサ90の出力を受信するためのECU100(コントロールユニット)と、を備えたことを特徴とするブレーキ装置。
よって、ストロークセンサ90とECU100とを他の電磁弁20等と同様に内部接続することが可能となり、コストアップを抑制できる。
よって、ECU100の放熱性を向上できる。
よって、第2ユニットハウジング5aの軽量化を図ることができる。
(20)上記(19)に記載のブレーキ装置において、第2ユニットハウジング5bの第1取り付け面5b1には、ポート5b9が形成され、接続ポート5a9に当接する当接面と、当接面から第2取り付け面5b2側にくぼんで形成したセンサ側凹部5b13(肉盗み部)と、を備えたことを特徴とするブレーキ装置。
よって、ブレーキ装置の軽量化を図ることができる。
Claims (20)
- ブレーキ装置であって、
内部に形成されたシリンダと、該シリンダ内を軸方向にストロークするピストンと、前記シリンダの内部と前記シリンダの外部とを接続する第1ポートとを備えたマスタシリンダハウジングと、
前記第1ポートと接続する第2ポートと、前記第2ポートから流入したブレーキ液が流通する油路と、前記油路を断接する電磁弁と、前記マスタシリンダハウジングの一側面側に取り付けられる一側面側とを備えたバルブハウジングと、
前記バルブハウジングの一側面と前記マスタシリンダハウジングの一側面との間に設けられ前記第1ポートと前記第2ポートとを接続する接続部と、
前記接続部の周りで各ハウジングの外部に形成された空間とを備えたことを特徴とするブレーキ装置。 - 請求項1に記載のブレーキ装置において、
前記空間に、前記ピストンの軸方向のストローク量を検出するストロークセンサを配置したことを特徴とするブレーキ装置。 - 請求項2に記載のブレーキ装置において、
前記バルブハウジングの他側面側に取り付けられ、前記電磁弁の駆動及び前記ストロークセンサの出力を受信するためのコントロールユニットと、
前記バルブハウジングに設けられ、前記ストロークセンサの出力を前記コントロールユニットに伝達するための信号線を通すための貫通孔と、
を備えたことを特徴とするブレーキ装置。 - 請求項3に記載のブレーキ装置において、
前記信号線はバスバーであることを特徴とするブレーキ装置。 - 請求項2に記載のブレーキ装置において、
前記コントロールユニットはコントローラを備え、
前記コントローラ及び前記ストロークセンサと外部とを電気的に接続するコネクタを備えたことを特徴とするブレーキ装置。 - 請求項2に記載のブレーキ装置において、
前記ストロークセンサは前記ピストンのストロークを磁気的変化に基づき検出する磁気センサであり、
前記マスタシリンダハウジングは非磁性体であり、
前記ストロークセンサは、前記マスタシリンダハウジングの壁に取り付けられていることを特徴とするブレーキ装置。 - 請求項6に記載のブレーキ装置において、
前記空間にはストロークセンサの前記信号線が配置されていることを特徴とするブレーキ装置。 - 請求項7に記載のブレーキ装置において、
前記信号線は前記空間において前記マスタシリンダハウジングに沿って延在する延在部と前記延在部から前記バルブハウジングの方向に起立し前記コントロールユニットに対して軸方向から接続して信号を伝達する接続端部を備えることを特徴とするブレーキ装置。 - 請求項8に記載のブレーキ装置において、
前記バルブハウジングの他側面側に取り付けられ、前記電磁弁の駆動及び前記ストロークセンサの出力を受信するためのコントロールユニットと、
前記バルブハウジングに設けられ、前記ストロークセンサの出力を前記コントロールユニットに伝達するための信号線を通すための貫通孔と、
を備え、
前記接続端部は前記貫通孔に対応した位置となるように起立していることを特徴とするブレーキ装置。 - 請求項1に記載のブレーキ装置において、
前記空間は前記マスタシリンダハウジングの一側面に形成された凹部であることを特徴とするブレーキ装置。 - 請求項10に記載のブレーキ装置において、
前記マスタシリンダハウジングは鋳造品であって、前記第1ポートは前記マスタシリンダハウジングの一側面に形成され、前記バルブハウジング側に突出した突出部であり、前記空間は前記突出部周りに形成されていることを特徴とするブレーキ装置。 - 請求項11に記載のブレーキ装置において、
前記バルブハウジングの一側面には、前記第2ポートが形成され、前記突出部に当接する当接面と、前記空間は前記当接面から他側面側にくぼんで形成した肉盗み部を備えたことを特徴とするブレーキ装置。 - 請求項1に記載のブレーキ装置において、
前記空間は前記バルブハウジングの一側面に形成された凹部であることを特徴とするブレーキ装置。 - 請求項13に記載のブレーキ装置において、
前記バルブハウジングの一側面には、前記第2ポートが形成され、前記第1ポートに当接する当接面と、前記空間は前記当接面から他側面側にくぼんで形成した肉盗み部と、を備えたことを特徴とするブレーキ装置。 - 請求項1に記載のブレーキ装置において、
前記空間は前記各ハウジングの対抗する外壁の間を連通していることを特徴とするブレーキ装置。 - 運転者のブレーキペダル操作に応じて作動するロッドを介して内部に形成されたシリンダ内を軸方向にストロークするピストンと、前記シリンダ内部と外部とを接続する第1ポートが一側面に形成されたマスタシリンダであって、
前記マスタシリンダのマスタシリンダハウジングの一側面には、内部に形成した油路と前記第1ポートと接続する第2ポートとを備えたハウジングが取り付けられるよう構成され、前記マスタシリンダの一側面には前記第1ポートが形成された突出部と、前記突出部の周りに形成された空間を備えたことを特徴とするマスタシリンダ。 - 請求項16に記載のマスタシリンダにおいて、
前記空間に前記前記ピストンの軸方向のストローク量を検出するストロークセンサを配置したことを特徴とするマスタシリンダ。 - 内部に形成されたシリンダ内を運転者のブレーキ操作状態に応じて軸方向にストロークするピストンと、シリンダ内部と外部とを接続する第1ポートと、を備えたマスタシリンダハウジングと、
前記第1ポートから流出したブレーキ液を内部に形成された油路内に導入するための第2ポートと、前記マスタシリンダハウジングの一側面に取り付けるための一側面と、を備えたハウジングと、
前記各ハウジングは、一側面側において前記各ポート部を介して当接し、前記ポート部の周りに空間を備えたことを特徴とするブレーキ装置。 - 請求項18に記載のブレーキ装置において、
前記空間に、前記ピストンの軸方向のストローク量を検出するストロークセンサを配置したことを特徴とするブレーキ装置。 - 請求項19に記載のブレーキ装置において、
前記ハウジングには前記油路を断接するための電磁弁と、他側面側に取り付けられ前記電磁弁の駆動及び前記ストロークセンサの出力を受信するためのコントロールユニットを備えたことを特徴とするブレーキ装置。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201580036763.4A CN106660540A (zh) | 2014-07-15 | 2015-07-10 | 制动装置以及主缸 |
| KR1020177000037A KR101914884B1 (ko) | 2014-07-15 | 2015-07-10 | 브레이크 장치 및 마스터 실린더 |
| DE112015003267.3T DE112015003267B4 (de) | 2014-07-15 | 2015-07-10 | Bremsvorrichtung und Hauptzylinder |
| US15/325,159 US20170182988A1 (en) | 2014-07-15 | 2015-07-10 | Brake Apparatus and Master Cylinder |
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| JP2014145057A JP6375542B2 (ja) | 2014-07-15 | 2014-07-15 | ブレーキ装置及びマスタシリンダ |
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| KR102657491B1 (ko) * | 2017-02-15 | 2024-04-15 | 에이치엘만도 주식회사 | 통합형 브레이크 시스템의 조립구조 |
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| US12071118B2 (en) | 2019-02-12 | 2024-08-27 | Ipgate Ag | Pressure supply device with double stroke piston for a brake system |
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| US12172615B2 (en) | 2019-02-12 | 2024-12-24 | Ipgate Ag | Brake system with a pressure supply device and a safety gate for the brake circuit |
| DE202019101596U1 (de) | 2019-02-12 | 2020-05-13 | Ipgate Ag | Hydrauliksystem mit mindestens zwei hydraulischen Kreisen und mindestens zwei Druckversorgungseinrichtungen |
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| Publication number | Publication date |
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| JP6375542B2 (ja) | 2018-08-22 |
| JP2016020173A (ja) | 2016-02-04 |
| DE112015003267B4 (de) | 2024-05-23 |
| KR101914884B1 (ko) | 2018-11-02 |
| DE112015003267T5 (de) | 2017-04-06 |
| US20170182988A1 (en) | 2017-06-29 |
| KR20170013378A (ko) | 2017-02-06 |
| CN106660540A (zh) | 2017-05-10 |
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