CN-116022110-B - Brake device for vehicle

Abstract

The present disclosure relates to a brake apparatus for a vehicle including a three-way solenoid valve unit including one or more three-way solenoid valves, a valve block having a first surface on which the three-way solenoid valve unit is mounted, at least one accumulator storing a working fluid, a pressurizing unit pressurizing the working fluid, and a plurality of wheel cylinders restricting rotation of wheels using hydraulic pressure of the working fluid, wherein each of the three-way solenoid valves includes a first port, a second port, a third port, a first opening/closing flow path allowing the first port and the second port to be in fluid communication with each other or preventing the first port and the second port from being in fluid communication with each other, and a second opening/closing flow path allowing the second port and the third port to be in fluid communication with each other or preventing the second port and the third port from being in fluid communication with each other, and at least a portion of the at least one accumulator is disposed between the three-way solenoid valve unit and the second surface of the valve block.

Inventors

• AN CHENGJI
• Zheng Chenghuan

Assignees

• 现代摩比斯株式会社

Dates

Publication Date

20260505

Application Date

20220411

Priority Date

20211025

Claims (11)

1. 1. A braking device for a vehicle, comprising: A three-way electromagnetic valve unit including one or more three-way electromagnetic valves; a valve block having a first surface on which the three-way solenoid valve unit is mounted; at least one accumulator configured to store a working fluid; A pressurizing unit configured to pressurize the working fluid, and A plurality of wheel cylinders configured to restrict rotation of wheels using hydraulic pressure of the working fluid, Wherein each three-way solenoid valve includes a first port, a second port, a third port, a first open/close flow path configured to allow or prevent the first port and the second port from being in fluid communication with each other, and a second open/close flow path configured to allow or prevent the second port and the third port from being in fluid communication with each other, and At least a portion of the at least one accumulator is disposed between the three-way solenoid valve unit and the second surface of the valve block, Wherein, the The pressurizing unit includes a motor pump provided in the valve block, and A high pressure on-off valve is mounted on a flow path connecting an inlet of the motor pump with the at least one accumulator.
2. 2. The braking device of claim 1, wherein: the at least one accumulator having a cylindrical shape with a bottom surface parallel to the second surface, and At least one of the one or more three-way solenoid valves is disposed in a region extending from the bottom surface of the at least one accumulator in a direction perpendicular to the second surface.
3. 3. The brake apparatus according to claim 1, wherein the three-way solenoid valve unit is mounted perpendicular to the first surface of the valve block.
4. 4. The braking device of claim 1, wherein: the first port, the second port, and the third port of each three-way solenoid valve are disposed to be spaced apart from each other in a longitudinal direction, and In the valve block of the present invention, At least a portion of a first flow path connecting the first port of each three-way solenoid valve to the at least one accumulator is disposed on a surface spaced a first distance from the first surface, A second flow path connecting the second port of each three-way electromagnetic valve with a corresponding wheel cylinder of the plurality of wheel cylinders is provided on a surface spaced apart from the first surface by a second distance, and A third flow path connecting the third port of each three-way solenoid valve to the pressurizing unit is provided on a surface spaced apart from the first surface by a third distance.
5. 5. The braking device of claim 4, wherein: the second flow path passes through a third surface of the valve block, the third surface being a surface opposite the second surface.
6. 6. The braking device of claim 1, wherein: the at least one accumulator being provided as a plurality of accumulators, and Each of the plurality of accumulators is connected to at least one of the one or more three-way solenoid valves.
7. 7. The braking apparatus of claim 6, wherein the one or more three-way solenoid valves are connected to each of the plurality of accumulators.
8. 8. The braking device of claim 1, wherein: the pressurizing unit includes a master cylinder configured to generate a hydraulic pressure corresponding to a brake signal, and A traction control valve is installed on a flow path connecting the master cylinder and the three-way solenoid valve unit.
9. 9. The braking device of claim 1, wherein: the motor of the motor pump is mounted on a third surface of the valve block, the third surface being a surface opposite the first surface.
10. 10. The brake apparatus according to claim 1, further comprising at least one pressure sensor configured to detect a hydraulic pressure of at least one of the plurality of wheel cylinders and a hydraulic pressure of a master cylinder, Wherein the pressurizing unit includes the master cylinder configured to generate a hydraulic pressure corresponding to a brake signal.
11. 11. The braking device of claim 10, wherein: The at least one pressure sensor is disposed between the three-way solenoid valve unit and the fourth surface of the valve block, and The fourth surface is a surface perpendicular to the first surface and the second surface.

Description

Brake device for vehicle RELATED APPLICATIONS The present application claims priority and the benefit of korean patent application No. 10-2021-0143005 filed on 25 th 10/2021, the disclosure of which is incorporated herein by reference in its entirety. Technical Field The present disclosure relates to a brake device for a vehicle. Background The matters described herein provide only background information and do not constitute related art. A normally open type solenoid valve is a solenoid valve that opens a flow path when no current is applied thereto. A normally closed type solenoid valve is a solenoid valve that closes a flow path when no current is applied thereto. The hydraulic brake device of a vehicle transmits working fluid to a plurality of wheel brake units by adjusting an open and closed state of each of a plurality of solenoid valves. Fig. 6 is a simple block diagram showing a conventional brake device for a vehicle. Referring to fig. 6, in the hydraulic brake device of the vehicle, the normally open type inlet valve 3 and the normally closed type outlet valve 5 are installed. Working fluid is supplied from the brake apparatus 1 to the inlet valve 3 and the outlet valve 5. When the inlet valve 3 is opened, the working fluid of the brake apparatus 1 flows to the wheel cylinder (WHEEL CYLINDER), so that the hydraulic pressure in the wheel cylinder increases. When the outlet valve 5 is opened, the working fluid of the wheel cylinder is discharged to the brake apparatus 1, so that the hydraulic pressure in the wheel cylinder is reduced. Since the hydraulic brake apparatus having this structure includes a plurality of solenoid valves, there is a problem of high manufacturing cost. There is a problem in that the volume of the valve block for accommodating a plurality of solenoid valves is also inevitably increased. Disclosure of Invention The present disclosure is directed to a brake apparatus for a vehicle, in which a three-way solenoid valve is used as an inlet valve and an outlet valve to reduce the manufacturing cost and volume of the hydraulic brake apparatus. The objects to be solved by the present disclosure are not limited to the above objects, and other objects not described above will be clearly understood by those skilled in the art from the following description. Drawings The above and other objects, features and advantages of the present disclosure will become more apparent to those of ordinary skill in the art by describing in detail exemplary embodiments thereof with reference to the attached drawings, in which: FIG. 1 is a hydraulic circuit diagram illustrating a brake device for a vehicle according to one embodiment of the present disclosure; FIG. 2 is a side view illustrating a brake device for a vehicle according to one embodiment of the present disclosure; FIG. 3 is a front view illustrating a brake device for a vehicle according to one embodiment of the present disclosure; FIG. 4 is a top view illustrating some components of a brake device for a vehicle according to one embodiment of the present disclosure; FIG. 5 is a cross-sectional view showing a three-way solenoid valve according to one embodiment of the present disclosure, and Fig. 6 is a simple block diagram showing a conventional brake apparatus for a vehicle. Detailed Description In the present specification, the term "left-hand side"/"right-hand side" or "upper"/"lower" is used only to indicate the direction of the components shown in the drawings, and the disclosure is not to be interpreted as being limited to the arrangement direction and position thereof. Fig. 1 is a hydraulic circuit diagram illustrating a brake device for a vehicle according to one embodiment of the present disclosure. Fig. 2 is a side view illustrating a brake apparatus for a vehicle according to one embodiment of the present disclosure. Fig. 3 is a front view illustrating a brake apparatus for a vehicle according to one embodiment of the present disclosure. Fig. 4 is a top view illustrating some components of a brake device for a vehicle according to one embodiment of the present disclosure. Referring to fig. 1 to 4, a brake apparatus 100 for a vehicle according to one embodiment of the present disclosure includes all or some of a three-way solenoid valve unit, a valve block 190, an accumulator, an oil reservoir 120, a pressurizing unit, a plurality of wheel cylinders w1, w2, w3, and w4, and a pressure sensor 180. The pressurizing unit is configured to pressurize the working fluid. The pressurizing unit may include at least one of a master cylinder 150 and a motor pump 160. The master cylinder 150 is configured to generate hydraulic pressure corresponding to a brake signal. In this case, the brake signal may be a signal corresponding to the pedal stroke amount of the driver or a deceleration signal provided by the automated driving system. The master cylinder 150 may be disposed such that a longitudinal direction of the master cylinder 150 is paralle