KR101796498B1 - Valve block for electronic control brake system - Google Patents

Valve block for electronic control brake system Download PDF

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Publication number
KR101796498B1
KR101796498B1 KR1020160008042A KR20160008042A KR101796498B1 KR 101796498 B1 KR101796498 B1 KR 101796498B1 KR 1020160008042 A KR1020160008042 A KR 1020160008042A KR 20160008042 A KR20160008042 A KR 20160008042A KR 101796498 B1 KR101796498 B1 KR 101796498B1
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KR
South Korea
Prior art keywords
valve
receiving bore
bore
receiving
pressure sensor
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KR1020160008042A
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Korean (ko)
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KR20170088119A (en
Inventor
김은미
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주식회사 만도
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Priority to KR1020160008042A priority Critical patent/KR101796498B1/en
Publication of KR20170088119A publication Critical patent/KR20170088119A/en
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Publication of KR101796498B1 publication Critical patent/KR101796498B1/en

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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
    • B60T8/341—Systems characterised by their 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
    • 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
    • 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
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/025—Electrically controlled valves
    • B60T15/028—Electrically controlled valves in hydraulic systems
    • 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
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/04—Driver's 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
    • 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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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Regulating Braking Force (AREA)

Abstract

A valve block for an electronic brake system of the present invention is disclosed. According to an aspect of the present invention, there is provided a hydraulic control apparatus for a vehicle, including: a plurality of valves, pumps, a low-pressure accumulator, a pressure sensor, and a motor for controlling the braking hydraulic pressure supplied to wheel cylinders connected to master cylinders, Wherein the valve block includes a plurality of NO valves accommodating a plurality of NO valves, each of the plurality of NO bores accommodating a plurality of NO bores, Wherein a plurality of NC valve receiving bores are disposed in the first valve train and a plurality of NC valve receiving bores are disposed in the first valve train and a pair of the first valve train and the second valve train are arranged in parallel on the first valve train, The first valve train and the second valve train are arranged in parallel with the first and second valve train Wherein the pressure sensor receiving bore includes a cylinder pressure sensor accommodating bore provided to detect the hydraulic pressure of the master cylinder and a wheel pressure sensor accommodating bore provided to detect the hydraulic pressure of the wheel cylinder The wheel pressure sensor receiving bore may be provided in each of the two hydraulic circuits so as to provide a valve block for an electromagnetic brake system formed between the first valve train and the pair of driving force control valve receiving bores.

Description

[0001] The present invention relates to a valve block for an electronic brake system,

The present invention relates to a valve block, and more particularly to a valve block for an electronic brake system for electronically controlling a braking pressure in a hydraulic brake system.

The electronic brake system is for effectively preventing a slip phenomenon that can occur during braking, sudden acceleration or rapid acceleration of a vehicle, and is generally used for a brake system of a vehicle brake system, a master cylinder, a wheel cylinder, Block, and an electronic control unit for controlling the valve block.

A plurality of solenoid valves (NO / NC valves) for controlling the braking hydraulic pressure transmitted to the wheel cylinder side provided in each wheel, a low pressure accumulator for temporarily storing the oil that has escaped from the wheel cylinder, A pair of pumps driven by a motor, a shuttle valve and a driving force control valve provided on the suction portion and the discharge portion of the pump, respectively.

Such a valve block includes a plurality of valve receiving bores, a pump receiving bore and a motor receiving bore, a low pressure accumulator receiving bore, a port for connection with a master cylinder and a wheel cylinder for compact installation of a number of components, A plurality of flow paths connected to the pressure sensor receiving bore, each port, and the receiving bore, proposing the direction of the hydraulic flow, are processed.

Recently, in order to increase the additional functions required in the electronic brake system, in addition to the cylinder pressure sensor for measuring the hydraulic pressure generated from the master cylinder, a pair of wheel pressure sensors for measuring the hydraulic pressure on the wheel cylinder side are separately provided Has been installed and used.

The valve block is also equipped with a pulsation reduction device selectively connected to the discharge port side of the pump in order to reduce the pressure pulsation of the oil pressurized and discharged by the operation of the pump.

However, in the conventional valve block, an unused space other than a space in which a plurality of parts are disposed is unnecessarily present, and therefore, the arrangement structure of parts is required to be improved. Particularly, when the wheel pressure sensor is installed in the valve block, There is a problem that the configuration that is compactly installed in the valve block adversely affects the configuration. In other words, the internal structure of the valve block should be compact and the size of the valve should be compact. However, since a separate wheel pressure sensor is installed to increase the size of the valve block, .

Further, when the pulsation reduction device is formed in the valve block, the flow path structure in the valve block changes, so that compatibility between the valve block provided with the pulsation reduction device and the valve block without the pulsation reduction device is difficult.

Published Patent No. 10-2010-0057889 (Robert Bosch) 2010. 06. 01.

In the valve block for an electronic brake system according to an embodiment of the present invention, the wheel pressure sensor is installed using the passage formed in the valve block, thereby reducing the machining time of the receiving bore for installing the wheel pressure sensor, So that the ease of processing is improved.

Further, a valve block for an electronic brake system according to an embodiment of the present invention makes it possible to optimize the size of the valve block by utilizing unused space in the valve block.

Also, the valve block for an electronic brake system according to an embodiment of the present invention can realize the same flow path regardless of the presence or absence of the pulsation reduction device, thereby improving the compatibility without changing the size of the valve block.

According to an aspect of the present invention, there is provided a hydraulic control apparatus for a vehicle, including: a plurality of valves, pumps, a low-pressure accumulator, a pressure sensor, and a motor for controlling the braking hydraulic pressure supplied to wheel cylinders connected to master cylinders, Wherein the valve block includes a plurality of NO valves accommodating a plurality of NO valves, each of the plurality of NO bores accommodating a plurality of NO bores, Wherein a plurality of NC valve receiving bores are disposed in the first valve train and a plurality of NC valve receiving bores are disposed in the first valve train and a pair of the first valve train and the second valve train are arranged in parallel on the first valve train, The first valve train and the second valve train are arranged in parallel with the first and second valve train Wherein the pressure sensor receiving bore includes a cylinder pressure sensor accommodating bore provided to detect the hydraulic pressure of the master cylinder and a wheel pressure sensor accommodating bore provided to detect the hydraulic pressure of the wheel cylinder The wheel pressure sensor receiving bore may be provided in each of the two hydraulic circuits so as to provide a valve block for an electromagnetic brake system formed between the first valve train and the pair of driving force control valve receiving bores.

The wheel pressure sensor receiving bore may be connected to a flow path connecting the wheel cylinder port and the NO-valve receiving bore.

In addition, the wheel pressure sensor receiving bore may be arranged to have a triangular configuration together with the outermost NO-valve receiving bore of the first valve train and the driving force control valve receiving bore.

The cylinder pressure sensor receiving bore is formed on a center line with respect to a center line that divides the two hydraulic circuits and is connected to one of a pair of cylinder connecting portions connected to the master cylinder through a flow path, And may be formed on the upper side of the receiving bore.

According to another aspect of the present invention, there is provided a hydraulic control apparatus for a vehicle, including: a plurality of valves, pumps, a low-pressure accumulator, a pressure sensor, and a pressure sensor for controlling braking hydraulic pressure supplied to wheel cylinders connected to master cylinders, A valve block for an electronic brake system in which a plurality of receiving bores for receiving motors are formed and a plurality of oil passages are formed for connecting a plurality of receiving bores therein, the valve block comprising: a plurality of NO valves A plurality of NC valve receiving bores are disposed in the first valve train and a plurality of NC valve receiving bores are disposed in the second valve train and the first valve train is arranged in parallel with the first valve train A pair of driving force control valve receiving bores are formed, and between the first valve train and the second valve train, an arrangement parallel to the first and second valve train Wherein the pressure sensor receiving bore includes a cylinder pressure sensor accommodating bore provided to detect the hydraulic pressure of the master cylinder and a wheel pressure sensor accommodating bore provided to detect the hydraulic pressure of the wheel cylinder, And the wheel pressure sensor receiving bore may be provided in each of the two hydraulic circuits to provide a valve block for an electronic brake system formed between the first valve train and the second valve train.

Further, the wheel pressure sensor receiving bore may be formed to be connected to a flow path connecting the NO valve receiving bore and the NC valve receiving bore.

The cylinder pressure sensor accommodating bore is connected to one of a pair of cylinder connecting portions formed on the center line on the center line that defines the two hydraulic circuits and connected to the master cylinder through the oil passage, May be formed between the valve rows in which the pair of shuttle valve receiving bores are formed.

In addition, a reception bore in which a NO valve, an NC valve, a drive force control valve, a shuttle valve, and a pressure sensor are formed on the front surface of the valve block, a receiving bore in which a motor and a motor connector are installed on the back surface of the valve block, And a pair of low-pressure accumulator receiving bores are formed on a lower surface of the valve block, and the upper surface of the valve block A wheel cylinder port may be formed.

In addition, the motor receiving bore is disposed between the pair of pump receiving bores, and the motor connector receiving bore is formed on the upper side of the motor receiving bore. The motor receiving bore and the motor connector receiving bore define a center line As shown in FIG.

In addition, the cylinder pressure sensor receiving bore may be formed on the upper side of the motor connector receiving bore, or may be formed between the motor receiving bore and the motor connector receiving bore.

Further, a leakage bore may be formed between the pair of low-pressure accumulator receiving bores, and the leakage bore may be formed on the back surface of the valve block.

The shuttle valve receiving bore may be connected to the suction side of the pump receiving bore and the master cylinder connecting portion.

The pump receiving bore may be formed to be positioned between the first valve train and the second valve train, and may be formed to be symmetrical with respect to both sides of the valve block with respect to the motor receiving bore.

Further, damping bores may be formed on both sides of the valve block, and the damping bores may have an arrangement parallel to the pump receiving bores, and may be formed above the pump receiving bores with a motor connector receiving bore therebetween.

The damping bore may be disposed between the first valve train and the valve train in which the shuttle valve driving force control valve receiving bore is formed.

In addition, the suction side of the damping bore is connected to the discharge side of the pump receiving bore, and the discharge side of the damping bore is formed with an orifice so as to be connected to the driving force control valve receiving bore.

The valve block for an electronic brake system according to an embodiment of the present invention not only improves the arrangement structure of the components installed for controlling hydraulic flow but also increases the size of the valve block by utilizing the space between the components So that the manufacturing cost of the valve block can be reduced.

Further, since the wheel pressure sensor is provided using the oil passage formed in the valve block, the oil passage processing for connection with the wheel pressure sensor is not required separately, thereby reducing the processing time of the receiving bore for installing the wheel pressure sensor, Thereby improving the ease of use.

In addition, it is possible to realize the same flow path regardless of whether or not the pulsation reduction device is provided, thereby improving compatibility between products. This makes it possible to prevent variations in size of the valve block and to provide various product selection within the same size.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be described in detail with reference to the following drawings, which illustrate preferred embodiments of the present invention, and thus the technical idea of the present invention should not be construed as being limited thereto.
1 is a hydraulic circuit diagram schematically showing an electronic brake system according to an aspect of the present invention.
2 is a perspective view showing a front side of a valve block for an electronic brake system according to a first preferred embodiment of the present invention.
3 is a perspective view showing the back side of the valve block shown in Fig.
4 is a plan view of a front side showing a state in which a wheel cylinder port formed in a valve block for an electronic brake system and a wheel pressure sensor receiving bore are connected to each other according to a first preferred embodiment of the present invention.
5 is a plan view showing the back side of the valve block shown in Fig.
6 is a perspective view showing a front side of a valve block for an electronic brake system according to a second preferred embodiment of the present invention.
7 is a plan view showing the front side of the valve block shown in Fig.
8 is a plan view showing the back side of the valve block shown in Fig.
9 is a perspective view showing a front side of a valve block for an electronic brake system according to a third preferred embodiment of the present invention.
10 is a perspective view showing the back side of the valve block shown in Fig.
11 is a plan view of a front side showing a state in which a wheel cylinder port formed in a valve block for an electronic brake system and a wheel pressure sensor receiving bore are connected to each other according to a third preferred embodiment of the present invention.
12 is a plan view showing the back side of the valve block shown in Fig.
13 is a perspective view showing a front side of a valve block for an electronic brake system according to a fourth preferred embodiment of the present invention.
14 is a plan view showing the front side of the valve block shown in Fig.
15 is a plan view showing the back side of the valve block shown in Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are provided to fully convey the spirit of the present invention to a person having ordinary skill in the art to which the present invention belongs. The present invention is not limited to the embodiments shown herein but may be embodied in other forms. For the sake of clarity, the drawings are not drawn to scale, and the size of the elements may be slightly exaggerated to facilitate understanding.

1 is a hydraulic circuit diagram schematically showing an electronic brake system according to an aspect of the present invention.

Referring to the drawings, an electronic brake system to which the present invention is applied is characterized in that braking oil pressure formed through a booster 11 and a master cylinder 20 associated with a brake pedal 10 is transmitted to each wheel FL, FR, RL, RR And a valve block (100) having hydraulic circuits (40A, 40B) for controlling the wheel cylinders (30) to be transferred. The hydraulic circuits 40A and 40B are connected to the first port 21 of the master cylinder 20 and the wheel cylinders 30 provided on the two wheels FR and RL, A second hydraulic circuit 40B for connecting the second port 22 of the master cylinder 20 and the wheel cylinders 30 provided on the remaining two wheels FL and RR to control hydraulic pressure transmission . The first and second hydraulic circuits 40A and 40B are provided compactly in the valve block 100. [

The first hydraulic circuit 40A and the second hydraulic circuit 40B include a plurality of solenoid valves 41 and 42 for controlling the braking hydraulic pressure transmitted to the two wheel cylinders 30, Pressure accumulator 43 or a pair of pumps 44 for pumping oil to the low-pressure accumulator 43 or the master cylinder 20, and a low-pressure accumulator 43 for driving the pump 44 A pulsation reduction device 46 in which an orifice 46a is disposed at the outlet side to reduce the pressure pulsation of the oil discharged by the operation of the pump 44, The driving force control valve 47 and the shuttle valve 48 and the fluid pressure discharged from the pulsation reduction device 46 or the fluid pressure generated from the master cylinder 20 are selectively supplied to the wheel cylinder 30 or the pump 44 The flow paths 49 and 49a and the pulsation reduction device 46, And a stage and driving force control valve 47 port connecting flow passage 35 is branched from a hydraulic fluid (49) to connect.

That is, as shown in the drawing, a plurality of solenoid valves 41 and 42, a low pressure accumulator 43, a pump 44, a pulsation damping device 46, a driving force control valve 47, a shuttle valve 48, (35, 49, 49a) and the like are compactly provided in the valve block (100) and constituted by first and second hydraulic circuits (40A, 40B).

More specifically, a plurality of solenoid valves 41 and 42 are connected to the upstream side of the wheel cylinder 30 and are connected to a normally open type (NO type) solenoid valve 41 And a normally closed type (NC type) solenoid valve 42 (hereinafter, referred to as an "NC valve") linked with the downstream side of the wheel cylinder 30 and kept in a normally closed state. The opening and closing operations of the NO and NC valves 41 and 42 are performed by an electronic control unit (not shown) that senses the vehicle speed through a wheel sensor (not shown) disposed on each of the wheels FL, FR, RL and RR Respectively.

The electromagnetic brake system is also provided with a bypass valve that branches from the hydraulic oil path 49 connecting the outlet side of the master cylinder 20 to the pulsation reduction device 46 and the drive force control valve 47 and connects the inlet side of the pump 44 And a shuttle valve (ESV) 48 is provided in the bypass passage 49a, which is normally closed and opens according to an opening signal. That is, the bypass flow path 49a guides the oil of the master cylinder 20 to be sucked into the inlet of the pump 44 in accordance with the operation of the shuttle valve 48.

A driving force control valve (TC NO valve) 47 is provided in the hydraulic oil path 49 between the outlet side of the master cylinder 20 and the outlet of the pulsation reduction device 46 to maintain the normally open state, The braking pressure generated by the driving of the pump 44 can be transmitted to the wheel cylinders 30 of the wheels FL, FR, RL, RR by closing the oil passage when the road surface slip of the wheels occurs. Thus, even if the driver does not step on the brake pedal 10, the vehicle can be braked.

On the other hand, the port connection passage 35 is branched from the hydraulic oil passage 49 connecting the discharge end of the pulsation reduction device 46 and the drive force control valve 47. The port connection passage 35 is connected to the wheel cylinders 30 of the respective wheels FL, FR, RL and RR through the NO valve 41 and the NC valve 42. [

The pair of pumps 44 is driven with a phase difference of 180 degrees by one motor 45 so as to pressurize the oil on the side of the low pressure accumulator 43 or the master cylinder 20 and pump it to the side of the pulsation reduction device 46 .

In the electromagnetic brake system according to one aspect of the present invention as described above, the pulse block reducing device 46 is provided in the valve block 100, but the present invention is not limited thereto. Alternatively, And the structure of the flow path is not changed even if the pulsation reduction device 46 is not provided. This structure will be described below again.

Reference numeral 51 denotes a cylinder pressure sensor for measuring the hydraulic pressure generated from the master cylinder 20. Reference numeral 52 denotes a pair of wheel pressure sensors for detecting the hydraulic pressure transmitted to the wheel cylinders 30 so as to be provided on the two hydraulic circuits 40A and 40B, respectively.

The valve block provided in the electronic brake system will now be described in more detail with reference to FIGS. 2 to 5. FIG.

FIG. 2 is a perspective view showing a front side of a valve block for an electronic brake system according to a first preferred embodiment of the present invention, FIG. 3 is a perspective view showing a rear side of the valve block shown in FIG. 2, FIG. 5 is a side view showing a side surface of the valve block shown in FIG. 3; FIG. 5 is a plan view showing a state in which a wheel cylinder port formed in a block is connected to a wheel pressure sensor receiving bore;

The front face F1, the back face F2, the top face F3, the bottom face F4 and the both side faces F5, which indicate the direction of the valve block 100, The present invention is not limited thereto and it is to be understood that the plane of the valve block 100 may be changed depending on the position where the valve block 100 is installed.

1 to 5, the valve block 100 has a hexahedral shape. A large number of valves 41 and 52 are provided on the front face F1 of the valve block 100 to which the NO valve 41, the NC valve 42, the driving force control valve 47, the shuttle valve 48 and the pressure sensors 51 and 52, Receiving bores 141, 142, 147, 148, 151, 152 are formed. Receiving bores 145 and 160 into which a motor 45 and a motor connector (not shown) are inserted and master cylinder connecting portions 121 and 122 connected to the master cylinder 20 are provided on the rear surface F2 of the valve block 100, . A wheel cylinder port 130 is formed on the upper surface F3 of the valve block 100 and a low pressure accumulator accommodating bore 143 is formed on the lower surface F4 of the valve block 100 . A pump receiving bore 144 and a damping bore 146 are formed on both sides F5 of the valve block 100 to accommodate the pump 44 and the pulsation reduction device 46. [

Here, the remaining components except for the components disposed on the center line C of the valve block 100 among the components installed in the valve block 100 are formed symmetrically with respect to the center line C on both sides. The arrangement structure of the components installed in the valve block 100 will be described in detail below.

More specifically, on the front face F1 of the valve block 100, a plurality of NO-valve receiving bores 141 each accommodating a plurality of NO valves 41 are formed in the first valve train L1, A plurality of NC valve receiving bores 142 each accommodating a valve 42 are formed in the second valve train L2. The first and second valve rows L1 and L2 are arranged parallel to each other and the first and second valve receiving bores 141 and 142 are formed to be opened at the front face F1 of the valve block 100, And are laterally arranged.

A driving force control valve receiving bore 147 for receiving the driving force control valve 47 is formed on the upper side of the first valve train L1. The driving force control valve receiving bores 147 are provided in a pair and are arranged to be opened in the front face F1 of the valve block 100 and arranged transversely to be parallel to the first valve train L1.

A shuttle valve receiving bore 148 for receiving the shuttle valve 48 is formed between the first valve train L1 and the second valve train L2. These shuttle valve receiving bores 148 are provided in pairs and are arranged to be opened in the front face F1 of the valve block and arranged transversely to be parallel to the first valve train L1. The shuttle valve receiving bore 148 is connected to the suction side of the pump receiving bore 145 and the master cylinder connecting portions 121, 122.

The pressure sensor receiving bores 151 and 152 on which the pressure sensors 51 and 52 are installed are provided with a cylinder pressure sensor receiving bore 151 provided to detect the hydraulic pressure of the master cylinder 20, And a wheel pressure sensor receiving bore 152 provided for detecting pressure.

The cylinder pressure sensor receiving bore 151 is formed on the center line C defining the two hydraulic circuits 40A and 40B. The cylinder pressure sensor receiving bore 151 is formed to be positioned above the valve train on which the pair of driving force control valve receiving bores 147 are arranged, that is, above the motor connector receiving bore 160 to be described later. The cylinder pressure sensor receiving bore 151 is connected to the master cylinder connecting portion 121 connected to the first port 21 of the master cylinder 20. However, the present invention is not limited to this, 2 port 22 and the master cylinder connecting portion 122 connected to the two port 22.

The wheel pressure sensor receiving bore 152 is formed between the first valve train L1 and the pair of driving force control valve receiving bores 147 and is formed in a pair so as to be respectively provided on the two hydraulic circuits 40A and 40B . That is, the wheel pressure sensor receiving bore 152 is arranged to have a triangular configuration together with the outermost NO-valve receiving bore 141 and the driving force control valve receiving bore 147 of the first valve train L1. The wheel pressure sensor receiving bore 152 is connected to the oil passage 35 connecting the wheel cylinder port 130 and the NO valve receiving bore 141 to detect the hydraulic pressure on the wheel cylinder 30 side. The flow path connecting the wheel cylinder port 130 and the NO-valve receiving bore 141 is a port connecting flow path 35. The flow path connecting the wheel cylinder port 130 and the NO-valve receiving bore 141 is not a separately processed flow path for connection with the wheel pressure sensor receiving bore 152, (Not shown). That is, the port connection passage 35 is connected to the wheel cylinder port 130 connected to the wheels FL, FR, RL and RR, and is connected to the NO valve receiving bore 141 and the NC valve receiving bore 142 . Since only the wheel pressure sensor receiving bore 152 is machined so that the wheel pressure sensor receiving bore 152 is connected to the port connecting channel 35, it is possible to exclude the step of extending the flow path or machining a separate flow path, And the ease of processing is improved.

In the first embodiment of the present invention, the pair of wheel pressure sensor receiving bores 152 are connected to the wheel cylinder port 130 connected to the front wheels FL and FR. However, the present invention is not limited thereto, The wheel cylinder port 130 connected to the rear wheels RL and RR or the wheel cylinder port 130 connecting the right front wheel FR and the right rear wheel RR. That is, in the structure in which the pair of wheel pressure sensor receiving bores 152 are arranged in the lateral direction, by changing the formation position of the wheel pressure sensor receiving bore 152 in the lateral direction in which the wheel pressure sensor receiving bore 152 is arranged Can be implemented. Even when the position of the wheel pressure sensor receiving bore 152 is changed and connected to the port connecting passage 35 for connecting the existing wheel cylinder port 130 to the NO valve receiving bore 141, It is not necessary to process a separate flow path for connection with the flow paths 152 and 152.

As described above, since the wheel pressure sensor receiving bore 152 is formed without interference with surrounding components, it is possible to arrange the components compactly without increasing the size of the valve block 100.

On the rear face F2 of the valve block 100, a motor receiving bore 145 is formed in which a motor 45 is installed. The motor receiving bore 145 is formed on the center line C of the valve block 100 and is disposed between the first valve train L1 and the second valve train L2. The motor receiving bore 145 is formed between a pair of shuttle valve receiving bores 148 arranged between the first valve row L1 and the second valve row L2. The motor receiving bore 145 is formed to be perpendicular to the pump receiving bore 144 between a pair of pump receiving bores 144 to be described later.

A motor connector receiving bore 160 is provided on the rear surface F2 of the valve block 100 to electrically connect the motor 45 to the motor receiving bore 145. [ The motor connector receiving bore 160 is formed above the motor receiving bore 145 on the center line C of the valve block 100. The motor connector receiving bore 160 is disposed between the first valve train L1 and the driving force control valve receiving bore 147 and is formed to pass through the valve block 100. [

In addition, a leakage bore 162 may be formed on the back surface F2 of the valve block 100. [ The leakage bore 162 is connected to the motor receiving bore 145 on the center line C of the valve block 100 and disposed below the second valve train L2. As shown, the leak bore 162 is formed between a pair of low pressure accumulator receiving bores 143, which will be described later. This leakage bore 162 allows the oil to flow as the oil leaking through the pump receiving bore 144 passes into the motor receiving bore 145. The leak bores 162 are distributed on the back surface of the motor assembly and bonded to form a blind bore by a hard sealant. This ensures the immersion leakage prevention and leakage stability of the hydraulic system.

The cylinder pressure receiving bore 151, the motor connector receiving bore 160, the motor receiving bore 145 and the leakage bore 162 are sequentially arranged on the center line C of the valve block 100 do.

A pair of master cylinder connecting portions 121 and 122 for receiving braking hydraulic pressure through the first and second ports 21 and 22 of the master cylinder 20 are provided on the upper side of the rear face F2 of the valve block 100, And a pair of low-pressure accumulator receiving bores 143 are formed on the lower surface F4 of the valve block 100 in the transverse direction. A plurality of wheel cylinder ports 130 for transmitting braking hydraulic pressure to the wheel cylinders 30 of the respective wheels FL, FR, RL and RR are formed on the upper surface F3 of the valve block 100. [ At this time, the wheel cylinder port 130 is formed so as to be disposed close to the front face F1 of the valve block 100. [

On both sides F5 of the valve block 100 are provided pump receiving bores 144 in which the pump 44 is received. The pump receiving bore 144 is formed in a horizontal direction between the first valve train L1 and the second valve train L2. That is, the valve block 100 is formed so as to be parallel to the first and second valve rows L1 and L2 on both side surfaces F5. The pump receiving bore 144 is formed to be symmetrical with respect to the motor receiving bore 145 on both sides.

Damping bores 146 are formed on both side surfaces F5 of the valve block 100 to provide a pulsation reducing device 46. [ The damping bore 146 is formed on the upper side of the pump receiving bore 144 so as to have an arrangement parallel to the pump receiving bore 144. Specifically, the damping bore 146 is disposed between the first valve train L1 and the driving force control valve receiving bore 147, the suction side of the damping bore 146 is connected to the discharge side of the pump receiving bore 144, An orifice (see 46a in FIG. 1) is formed at the discharge side of the bore 146 and connected to the driving force control valve receiving bore 147. At this time, the orifice 46a may be integrally formed with the damping bore 146, but may be connected to the driving force control valve receiving bore 147 through a flow path formed with the orifice 46a.

On the other hand, the damping bore 146 provided in the valve block 100 may be provided by the user's choice, and the valve block 100 not using the damping bore 146 may be provided. The valve block 100 of the first embodiment having the structure in which the structure of the flow path is not changed and the damping bore 146 is provided even if the damping bore 146 is not provided in the valve block 200 ) May be provided.

Fig. 6 is a perspective view showing a front side of a valve block for an electronic brake system according to a second preferred embodiment of the present invention, Fig. 7 is a plan view showing the front side of the valve block shown in Fig. 6, Fig. 4 is a plan view showing the back side of the valve block shown in Fig. Here, the same reference numerals as in the drawings of the first embodiment shown above indicate members having the same function.

6 to 8, a NO valve 41, an NC valve 42, a driving force control valve 47, a shuttle valve 48, pressure sensors 51, A motor 45 and a motor connector (not shown) are mounted on the rear surface F2 of the valve block 200, and a plurality of receiving bores 141, 142, 147, 148, Receiving bores 145 and 160 to be inserted and master cylinder connecting portions 121 and 122 connected to the master cylinder 20 are formed. A pump receiving bore 144 for receiving the pump 44 is formed on both side faces F5 of the valve block 200 and a pair of low pressure accumulator receiving bores 143 are formed on the lower face F4 of the valve block 200. [ And a wheel cylinder port 130 is formed on an upper surface F3 of the valve block 200. [ That is, the valve block 200 according to the present embodiment differs in the presence or absence of the valve block 100 and the damping bore 146 of the first embodiment, and the remaining structure of the component elements and the structure of the flow paths are the same.

According to the second embodiment, the discharge side of the pump receiving bore 144 is connected to the driving force control valve receiving bore 147 via the hydraulic oil path 49, and the driving force control valve receiving bore 147 is connected to the bypass passage 49a, To the shuttle valve receiving bore (148). At this time, an orifice (not shown) is formed in the hydraulic oil passage 49. That is, since the hydraulic oil path 49 connected to the discharge end of the pump receiving bore 144 is provided in the space in which the damping bore 146 of the first embodiment is formed, the structure of the oil passage is changed even if the damping bore 146 is not provided .

Fig. 9 is a perspective view showing a front side of a valve block for an electronic brake system according to a third preferred embodiment of the present invention, Fig. 10 is a perspective view showing the back side of the valve block shown in Fig. 9, FIG. 12 is a plan view showing a rear side of the valve block shown in FIG. 10; FIG. 12 is a front plan view of a valve block showing a state in which a wheel cylinder port formed in a block is connected to a wheel pressure sensor receiving bore; Here, the same reference numerals as those of the valve block shown in Figs. 9 to 12 and the valve block of the first preceding embodiment refer to members having the same function.

9 to 12, a NO valve 41, an NC valve 42, a driving force control valve 47, a shuttle valve 42, and a shuttle valve 44 are mounted on the front surface F1 of the valve block 300 according to the third embodiment of the present invention. A plurality of receiving bores 141, 142, 147, 148, 351, and 352 are formed in which pressure sensors 51 and 52 are respectively installed. Receiving bores 145 and 160 into which a motor 45 and a motor connector (not shown) are inserted and master cylinder connecting portions 121 and 122 connected to the master cylinder 20 are provided on the rear surface F2 of the valve block 100, And a leakage bore 162 connected to the motor receiving bore 145 are formed. A pump receiving bore 144 and a damping bore 146 are formed on both sides F5 of the valve block 300 to accommodate the pump 44 and the pulsation reduction device 46. [ A pair of low pressure accumulator receiving bores 143 are formed on the lower surface F4 of the valve block 300 and a wheel cylinder port 130 is formed on the upper surface F3 of the valve block 300. [ The motor connector receiving bore 160, the cylinder pressure sensor receiving bore 351, the motor receiving bore 145 and the leakage bore 162 are sequentially arranged on the center line C of the valve block 300. That is, the valve block 300 according to the present embodiment is different from the valve block 100 according to the first embodiment in the positions where the cylinder pressure sensor receiving bore 351 and the wheel pressure sensor receiving bore 352 are formed, The element layout structure and the flow path formation structure are all the same.

According to the present embodiment, the cylinder pressure sensor accommodating bore 351 is formed on the center line C defining the two hydraulic circuits 40A and 40B. The cylinder pressure sensor receiving bore 351 is formed between the valve train in which the first valve train L1 and the pair of shuttle valve receiving bores 148 are formed. Also, it is formed to be positioned between the motor receiving bore 145 and the motor connector receiving bore 160. The cylinder pressure sensor receiving bore 351 is connected to the master cylinder connecting portion 121 connected to the first port 21 of the master cylinder 20. However, the present invention is not limited to this, And the master cylinder connecting portion 122 connected to the two port 22 may be connected.

The wheel pressure sensor receiving bore 352 is formed between the first valve train L1 and the second valve train L2 and is formed in a pair so as to be respectively provided on the two hydraulic circuits 40A and 40B. The wheel pressure sensor receiving bore 352 is connected to the oil passage 35 connecting the NO valve receiving bore 141 and the NC valve receiving bore 142 to detect the hydraulic pressure on the wheel cylinder 30 side. The flow path 35 connecting the NO valve receiving bore 141 and the NC valve receiving bore 142 is a port connecting flow path 35 in which a flow path processed separately for connection with the wheel pressure sensor receiving bore 352 But is a flow path that is essentially provided for transferring hydraulic pressure to the wheel cylinder port 130. That is, the port connection passage 35 is connected to the wheel cylinder port 130 connected to the wheels FL, FR, RL and RR, and is connected to the NO valve receiving bore 141 and the NC valve receiving bore 142 . Since only the wheel pressure sensor receiving bore 352 is formed so that the wheel pressure sensor accommodating bore 352 is connected to the port connecting channel 35, it is possible to exclude the step of extending the flow path or machining a separate flow path, And the ease of processing is improved.

In the third embodiment of the present invention, the pair of wheel pressure sensor receiving bores 352 are connected to the wheel cylinder port 130 connected to the front wheels FL and FR. However, the present invention is not limited thereto, The wheel cylinder port 130 connected to the rear wheels RL and RR or the wheel cylinder port 130 connecting the right front wheel FR and the right rear wheel RR. That is, in the structure in which the pair of wheel pressure sensor receiving bores 352 are arranged in the lateral direction, by changing the formation position of the wheel pressure sensor receiving bore 352 in the lateral direction in which the wheel pressure sensor receiving bore 352 is arranged Can be implemented. Even when the position of the wheel pressure sensor accommodating bore 352 is changed, the wheel pressure sensor receiving bore 352 is connected to the port connecting passage 35 for connecting the existing NO-valve receiving bore 141 and the NC valve receiving bore 142, It is not necessary to process a separate flow path for connection with the flow path 352.

As described above, since the wheel pressure sensor receiving bore 352 is formed without interference with peripheral components, it is possible to arrange the components compactly without increasing the size of the valve block 300.

On the other hand, the damping bore 146 provided in the valve block 300 according to the third embodiment of the present invention is an element added by the user's choice as described above in the previous embodiment, An unused valve block 400 may be provided. The valve block 300 of the third embodiment having a structure in which the structure of the flow path is not changed and the damping bore 146 is provided even if the damping bore 146 is not provided in the valve block 400 ) May be provided.

Fig. 13 is a perspective view showing a front side of a valve block for an electronic brake system according to a fourth preferred embodiment of the present invention, Fig. 14 is a plan view showing the front side of the valve block shown in Fig. 13, Fig. 4 is a plan view showing the back side of the valve block shown in Fig. Here, the same reference numerals as in the drawings of the third embodiment shown above indicate members having the same function.

13 to 15, a NO valve 41, an NC valve 42, a driving force control valve 47, a shuttle valve 48, pressure sensors 51, A motor 45 and a motor connector (not shown) are formed on the rear surface F2 of the valve block 400 Receiving bores 145 and 160 to be inserted and master cylinder connecting portions 121 and 122 connected to the master cylinder 20 are formed. A pump receiving bore 144 for receiving the pump 44 is formed on both side faces F5 of the valve block 400 and a pair of low pressure accumulator receiving bores 143 And a wheel cylinder port 130 is formed on an upper surface F3 of the valve block 400. [ That is, the valve block 400 according to the present embodiment differs in the presence or absence of the valve block 300 and the damping bore 146 of the third embodiment, and the remaining component arrangement structure and flow path forming structure are all the same.

According to the fourth embodiment, the discharge side of the pump receiving bore 144 is connected to the driving force control valve receiving bore 147 through the hydraulic oil path 49, and the driving force control valve receiving bore 147 is connected to the bypass passage 49a, To the shuttle valve receiving bore (148). At this time, an orifice (not shown) is formed in the hydraulic oil passage 49. That is, since the hydraulic oil path 49 connected to the discharge end of the pump receiving bore 144 is provided in the space in which the damping bore 146 of the first embodiment is formed, the structure of the oil passage is changed even if the damping bore 146 is not provided .

As described above, the NO valve and the NC valve receiving bores 141 and 142, the pump receiving bore 144, the wheel cylinder port 130, and the master cylinder connecting portion 140 formed in the valve blocks 100, 200, 300, The lower pressure accumulator receiving bore 143, the shuttle valve receiving bore 148, the driving force control valve receiving bore 147 and the wheel pressure sensor receiving bore 152, 352 are connected to the center line of the valve block 100 C, respectively. This is because the hydraulic pressure transmitted from the master cylinder 20 is controlled to control the braking hydraulic pressure transmitted to the two wheels via the first and second hydraulic circuits 40A and 40B as described above, And the placement conditions are satisfied.

As a result, the valve block 100, 200, 300, 400 as described above is provided with the wheel pressure sensor receiving bore 152, 352 as the wheel cylinder port 130, the NO valve receiving bore 141 and the NC valve receiving bore 142 The wheel pressure sensor accommodating bores 152 and 352 can be formed without changing the flow path design in the valve blocks 100, 200, 300 and 400. [

Further, since the valve blocks 100, 200, 300, and 400 have the same flow path regardless of the use of the damping bore 146 for attenuating the pressure pulsation, there is no variation in size of the valve blocks 100, Selection can be provided. That is, the orifice 46a can be applied to the flow path or the structure of the damping bore 146 as the orifice (see 46a in FIG. 1) is applied.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood that various modifications and changes may be made without departing from the scope of the appended claims.

20: master cylinder 40A: first hydraulic circuit
40B: second hydraulic circuit 100, 200, 300, 400: valve block
121, 122: master cylinder connecting portion 130: wheel cylinder port
141: NO valve receiving bore 142: NC valve receiving bore
143: low pressure accumulator receiving bore 144: pump receiving bore
145: motor receiving bore 146: damping bore
147: driving force control valve receiving bore 148: shuttle valve receiving bore
151, 351: Cylinder pressure sensor receiving bore
152, 352: wheel pressure sensor receiving bore
160: Motor connector receiving bore 162: Leakage bore
L1: first valve column L2: second valve column
F1: Front F2: Rear
F3: upper surface F4: lower surface
F5: Both sides C: Center line

Claims (18)

A plurality of intake bores having a plurality of valves, pumps, a low-pressure accumulator, a pressure sensor, and a motor for controlling braking hydraulic pressure supplied to wheel cylinders connected to the master cylinders, A valve block for an electronic brake system in which a plurality of flow paths for connecting a plurality of receiving bores are formed,
The valve block is provided with a plurality of NO valve receiving bores each accommodating a plurality of NO valves in a first valve train and a plurality of NC valve receiving bores respectively receiving a plurality of NC valves disposed in a second valve train, A pair of driving force control valve receiving bores are formed on an upper side of the one valve train so as to have an arrangement parallel to the first valve train and an arrangement parallel to the first and second valve train is provided between the first valve train and the second valve train A pair of shuttle valve receiving bores are formed,
Wherein the pressure sensor receiving bore includes a cylinder pressure sensor receiving bore provided to detect the hydraulic pressure of the master cylinder and a wheel pressure sensor receiving bore provided to detect the hydraulic pressure of the wheel cylinder,
The wheel pressure sensor receiving bore is provided in each of the two hydraulic circuits and is formed between the first valve train and a pair of driving force control valve receiving bores,
The wheel pressure sensor receiving bore is provided at a position where a port connecting flow path for connecting the wheel cylinder port to the NO valve receiving bore and the NC valve receiving bore is formed and is directly connected to the port connecting flow path,
Wherein the pair of driving force control valves and the pair of shuttle valve receiving bores are respectively provided in two hydraulic circuits, and each of the driving force control valve and the shuttle valve receiving bore is connected to two wheel cylinder ports provided in a single hydraulic circuit A valve block for an electronic braking system disposed between two port connection conduits. delete The method according to claim 1,
Wherein the wheel pressure sensor receiving bore is arranged to have a triangular configuration with the outermost NO valve receiving bore of the first valve train and the driving force control valve receiving bore. The method according to claim 1,
Wherein the cylinder pressure sensor receiving bore is formed on a center line with respect to a center line dividing two hydraulic circuits and connected to one of a pair of cylinder connecting portions connected to the master cylinder through a flow path, Wherein the valve body is formed on the upper side of the valve body. A plurality of intake bores having a plurality of valves, pumps, a low-pressure accumulator, a pressure sensor, and a motor for controlling braking hydraulic pressure supplied to wheel cylinders connected to the master cylinders, A valve block for an electronic brake system in which a plurality of flow paths for connecting a plurality of receiving bores are formed,
The valve block is provided with a plurality of NO valve receiving bores each accommodating a plurality of NO valves in a first valve train and a plurality of NC valve receiving bores respectively receiving a plurality of NC valves disposed in a second valve train, A pair of driving force control valve receiving bores are formed on an upper side of the one valve train so as to have an arrangement parallel to the first valve train and an arrangement parallel to the first and second valve train is provided between the first valve train and the second valve train A pair of shuttle valve receiving bores are formed,
Wherein the pressure sensor receiving bore includes a cylinder pressure sensor receiving bore provided to detect the hydraulic pressure of the master cylinder and a wheel pressure sensor receiving bore provided to detect the hydraulic pressure of the wheel cylinder,
The wheel pressure sensor receiving bore is provided in each of the two hydraulic circuits and is formed between the first valve train and the second valve train,
The wheel pressure sensor receiving bore is provided at a position where a port connecting flow path for connecting the wheel cylinder port to the NO valve receiving bore and the NC valve receiving bore is formed and is directly connected to the port connecting flow path,
Wherein the pair of driving force control valves and the pair of shuttle valve receiving bores are respectively provided in two hydraulic circuits, and each of the driving force control valve and the shuttle valve receiving bore is connected to two wheel cylinder ports provided in a single hydraulic circuit A valve block for an electronic braking system disposed between two port connection conduits. delete 6. The method of claim 5,
Wherein the cylinder pressure sensor receiving bore is connected to one of a pair of cylinder connecting portions formed on a center line on the basis of a center line that defines two hydraulic circuits and connected to the master cylinder through a flow path, A valve block for an electronic brake system formed between valve rows in which shuttle valve receiving bores are formed. 6. The method according to claim 1 or 5,
And a reception bore in which a NO valve, an NC valve, a drive force control valve, a shuttle valve, and a pressure sensor are installed is formed on the front surface of the valve block,
A receiving bore in which a motor and a motor connector are installed and a master cylinder connecting part connected to the master cylinder are formed on the back surface of the valve block,
On both sides of the valve block, a pump receiving bore for receiving a pump is formed,
A pair of low pressure accumulator receiving bores are formed on the bottom surface of the valve block,
And a wheel cylinder port is formed on an upper surface of the valve block. 9. The method of claim 8,
The motor receiving bore being disposed between the pair of pump receiving bores, the motor connector receiving bore being formed on the upper side of the motor receiving bore,
Wherein the motor receiving bore and the motor connector receiving bore are arranged on the center line with respect to a center line that defines two hydraulic circuits. 10. The method of claim 9,
Wherein the cylinder pressure sensor receiving bore is formed on the upper side of the motor connector receiving bore or formed between the motor receiving bore and the motor connector receiving bore. 9. The method of claim 8,
And a leakage bore is further formed between the pair of low pressure accumulator receiving bores. 12. The method of claim 11,
Wherein the leakage bore is formed on a back surface of the valve block. 9. The method of claim 8,
Wherein the shuttle valve receiving bore is connected to the suction side of the pump receiving bore and the master cylinder connecting portion. 9. The method of claim 8,
Wherein the pump receiving bore is formed to be positioned between the first valve train and the second valve train and is symmetrically formed on both sides of the valve block with respect to the motor receiving bore. 9. The method of claim 8,
Damping bores are formed on both side surfaces of the valve block,
Wherein the damping bore has an arrangement parallel to the pump receiving bore and is formed on the upper side of the pump receiving bore with a motor connector receiving bore interposed therebetween. 16. The method of claim 15,
Wherein the damping bore is disposed between the first valve train and a valve train in which a pair of driving force control valve receiving bores are formed. 16. The method of claim 15,
Wherein a suction side of the damping bore is connected to a discharge side of the pump receiving bore and an orifice is formed on a discharge side of the damping bore and connected to a driving force control valve receiving bore. 18. The method of claim 17,
Wherein the orifice is formed at a side of the valve block such that the orifice is parallel to a valve train in which a pair of driving force control valve receiving bores are formed and the outlet of the orifice is connected to the driving force control valve receiving bore through a flow passage. Valve block.

KR1020160008042A 2016-01-22 2016-01-22 Valve block for electronic control brake system KR101796498B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190090637A (en) 2018-01-25 2019-08-02 박원학 Device for selective anodizing of hydraulic block of a integrated dynamic brake system and method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190090637A (en) 2018-01-25 2019-08-02 박원학 Device for selective anodizing of hydraulic block of a integrated dynamic brake system and method thereof

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