Hydraulic component assembly for drive-by-wire hydraulic braking system

Abstract

The utility model relates to a hydraulic component assembly for a drive-by-wire hydraulic brake system, which comprises a hydraulic valve block, a plunger pump assembly and a power device, a plunger pump pressure building cavity is arranged inside the hydraulic valve block, the plunger pump assembly and the power device are arranged on the hydraulic valve block, the plunger pump assembly comprises a piston portion and a transmission portion, one end of the transmission portion is assembled on the right side of the hydraulic valve block, and the other end of the transmission portion is assembled on the right side of the hydraulic valve block. One end of the piston part is connected with the hydraulic valve block, the other end of the piston part is connected with the power device, the right end of the piston part is connected with one end of the transmission part, the left end of the piston part extends into the hydraulic valve block, a sealing piece is arranged outside the piston part, and the piston part and the hydraulic valve block are sealed in a sliding mode in a plunger pump pressure building cavity through the sealing piece. The plunger pump pressure building cavity is formed in the hydraulic valve block, the technical scheme that in the prior art, a hydraulic valve block and a plunger pump cylinder body are integrated together is abandoned, the existing hydraulic valve block and the existing plunger pump cylinder body are integrated into one part, the number of parts in the BOM is reduced, management and maintenance cost is reduced, and the leakage risk of a system is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic brakes, in particular to a hydraulic component assembly for a wire-controlled hydraulic brake system. Background Art

[0002] This integrated electronic pedal sensor can accurately sense the driver's pedal pressure and convert it into an electrical signal to the electronic control unit. The high-pressure hydraulic control unit will automatically adjust the wheel brake pressure according to different driving conditions. This system shortens the reaction time and avoids the risk of the driver unconsciously reducing the braking force due to vibration caused by the reaction force of the hydraulic mechanical brake system.

[0003] After searching, the patent application document with patent publication number CN105691375B discloses that a pressure generating device for a motor vehicle braking system has a first housing component, and the first housing component has a flange-shaped section and a hollow cylindrical section. The flange-shaped section is used to connect the first housing component to a hydraulic unit of the braking system, and the hollow cylindrical section can be inserted into a hole constructed in the hydraulic unit for receiving the first housing component, wherein a piston in the hollow cylindrical section can be axially adjusted by means of a screw transmission device to generate hydraulic pressure for the braking system.

[0004] The above-mentioned technology of the brake system solution realizes the connection of at least two oil circuits and the sealing between the two oil circuits and the atmosphere through at least three sealing elastic elements between the pressure generating device section and the hydraulic unit:

[0005] 1. This will increase the number of sealing components in the entire system and increase the risk of internal oil leakage;

[0006] 2. The diameter of the piston is limited. The diameter and stroke of the piston will affect the displacement of the entire hydraulic pump. That is, when the piston stroke is constant, the larger the piston diameter, the larger the displacement of the plunger pump system. That is, when the size of the hydraulic unit is constant, the size of the piston will be limited, which will lead to an increase in the appearance size and weight of the product, reduce the adaptability of the product, and increase the cost and weight;

[0007] 3. The forming part on the piston has high precision requirements, resulting in large material waste and poor control of shape accuracy;

[0008] 4. The flange-shaped section and the hollow cylindrical section are a whole, so the material waste in the whole processing process will be very large, resulting in an increase in cost. Utility Model Content

[0009] In order to solve the above technical problems, the purpose of the utility model is to provide.

[0010] In order to achieve the above-mentioned purpose, the technical solution of the utility model is as follows: a hydraulic component assembly for a wire-controlled hydraulic brake system, comprising a hydraulic valve block with a plunger pump pressure-building chamber inside, a plunger pump assembly and a power device arranged on the hydraulic valve block, the plunger pump assembly comprising a piston part and a transmission part, one end of the transmission part is assembled on the right side of the hydraulic valve block, and the other end is connected to the power device, the right end of the piston part is connected to one end of the transmission part, and the left end of the piston part extends into the interior of the hydraulic valve block, a seal is provided on the outside of the piston part, and the seal is used to slide and seal with the hydraulic valve block inside the plunger pump pressure-building chamber.

[0011] The beneficial effects of the utility model are as follows: by arranging a plunger pump pressure chamber inside the hydraulic valve block, the technical solution of integrating the hydraulic valve block and the plunger pump cylinder body in the prior art is abandoned, and by integrating the existing hydraulic valve block and the plunger pump cylinder body into one component, the number of components in the BOM is reduced, the management and maintenance costs are reduced, and the risk of system leakage is reduced;

[0012] At the same time, since the existing plunger pump cylinder bodies are embedded in the hydraulic valve block and have a certain thickness, after assembly, the plunger pump hole inside the hydraulic valve block needs to reserve some space to accommodate the plunger pump cylinder body. After the plunger pump cylinder body and the hydraulic valve block are designed as a whole, the cross-sectional area of ​​the plunger pump piston can be effectively increased. When the plunger pump stroke remains unchanged, the liquid storage capacity and displacement of the plunger pump system can be greatly increased; when the same displacement is required, the diameter of the plunger pump piston is increased, that is, the cross-sectional area is increased, and the stroke of the plunger pump piston can be reduced. In this way, the lateral width of the entire system can be reduced.

[0013] On the basis of the above technical solution, the present invention can also be improved as follows.

[0014] Furthermore, a piston mounting hole is provided inside the hydraulic valve block and passes through it in the left and right directions. A plunger pump cylinder body is provided on the left side of the hydraulic valve block. The plunger pump cylinder body is concentrically arranged with the piston mounting hole and is integrally formed with the plunger pump cylinder body. The plunger pump cylinder body and the piston mounting hole form the plunger pump pressure-building chamber. The piston part is arranged inside the plunger pump pressure-building chamber and slides left and right inside it. A plurality of oil outlet grooves are provided on the bottom wall of the inner cavity of the plunger pump cylinder body, and oil outlet channels connected to the internal oil circuit of the hydraulic valve block are opened inside the plurality of oil outlet grooves.

[0015] The above technical solution can increase the displacement per unit stroke of the plunger pump by arranging the plunger pump cylinder to be concentrically integrally assembled on the hydraulic valve block, thereby reducing the overall volume of the entire device under a certain displacement requirement.

[0016] Furthermore, the piston portion includes an internally hollow plunger pump piston, a flange and a guide pin, the flange is arranged at one end of the plunger pump piston and is integrally formed with the plunger pump piston, the inner wall of the piston mounting hole is provided with semicircular grooves spaced apart along its circumference, the flange is provided with semicircular notches corresponding to the positions of the semicircular grooves spaced apart along its own circumference, the guide pin is embedded in the strip groove, and is partially embedded in the semicircular notches and engages with each other, the hydraulic valve block is concentrically provided with a countersunk hole on the right side of the piston mounting hole, the inner wall of the countersunk hole is provided with a circular depression, a fixing sleeve is embedded in the countersunk hole, the side walls of the fixing sleeve are provided with protrusions corresponding to the circular depression, which are used for positioning the fixing sleeve when it is embedded in the countersunk hole, and the inner wall of the fixing sleeve is provided with a plurality of semicircular holes corresponding to the plurality of semicircular grooves and overlapping one by one.

[0017] The above technical solution can be achieved by embedding a guide pin inside the piston mounting hole, and using the guide pin to limit the plunger pump piston circumferentially, and enable it to move on the surface of the guide pin, thereby enhancing the plunger pump piston's torsional resistance and stability during movement.

[0018] Furthermore, the transmission part includes a plunger pump mounting gasket, a bearing, a planetary gear transmission assembly, a ball screw and a nut. The plunger pump mounting gasket is concentrically mounted on the right side of the piston mounting hole by a fastening bolt. The bearing is embedded and torsionally arranged inside the plunger pump mounting gasket. The planetary gear transmission assembly is arranged at one end of the bearing and connected to the nut. The nut is coaxially sleeved on the outside of the ball screw and embedded in the inner ring of the bearing. The ball screw is fixedly assembled inside the plunger pump piston, and the two sides of the planetary gear transmission assembly are respectively connected to the power device and the nut.

[0019] The above technical solution can achieve stable linear motion of the plunger pump piston by setting up a planetary gear transmission assembly and cooperating with the ball screw and the nut to drive the piston, thereby facilitating the subsequent pushing of brake fluid.

[0020] Furthermore, the planetary gear transmission assembly includes a ring gear, a ring gear housing, a plurality of planetary gears and a plurality of gear pins. The ring gear housing is coaxially sleeved on the outer ring of the bearing, and the ring gear is coaxially assembled on the inner wall of the ring gear housing. The drive shaft of the power device passes through the ring gear housing and is equipped with a driving gear. The plurality of planetary gears are meshed with the driving gear and the ring gear. One ends of the plurality of gear pins are coaxially connected to the plurality of planetary gears one by one, and the other ends of the plurality of gear pins are fixedly assembled on the ends of the nut.

[0021] The above technical solution can be achieved by setting a planetary gear assembly so that it can reduce speed and increase torque to drive the nut to rotate, so that the nut can have enough torque to drive the ball screw to move circumferentially when rotating.

[0022] Furthermore, the power device includes a motor, a motor housing and a motor flange. One end of the motor housing is open, and the motor is assembled inside the motor housing. The motor flange is arranged at the open end of the motor housing and is integrally formed with the motor housing. The motor flange is concentrically assembled on the right side of the piston mounting hole through a motor fixing bolt. The driving shaft of the motor passes through the ring gear housing and is coaxially connected and fixed to the driving gear.

[0023] The above technical solution can be achieved by providing a motor, and utilizing the driving shaft of the motor to drive the driving gear to rotate, thereby driving the planetary gear transmission assembly to move.

[0024] Furthermore, it also includes a liquid storage pot assembly, which is assembled on the upper end of the hydraulic valve block, and a liquid level sensor is arranged inside the liquid storage pot assembly.

[0025] The above technical solution is to set up a fluid reservoir assembly, assemble it on the hydraulic valve block, and inject the brake fluid inside the fluid reservoir assembly into the hydraulic valve block.

[0026] Furthermore, it also includes an electronic control unit assembly, which is assembled on a side of the hydraulic valve block close to the plunger pump cylinder body.

[0027] The above technical solution can be achieved by setting up an electronic control unit assembly and using the solenoid valve inside the electronic control unit to control the brake system for output.

[0028] Furthermore, it also includes a pedal simulator assembly, which is assembled below the hydraulic valve block and communicated with the oil circuit inside the hydraulic valve block.

[0029] The above technical solution can generate hydraulic pressure to compress the elastic element of the pedal simulator assembly when the driver steps on the brake pedal. After the elastic element is compressed, a reaction force is generated, which reacts to the brake master cylinder through the brake fluid and is then transmitted to the driver to provide the driver with foot feeling feedback.

[0030] Furthermore, it also includes a brake master cylinder assembly. A through hole is provided above the piston mounting hole inside the hydraulic valve block, and the brake master cylinder assembly is assembled in the through hole.

[0031] The above technical solution can be used to brake the vehicle by arranging a brake master cylinder assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure in an embodiment of the utility model;

[0033] Figure 2It is a schematic diagram of a three-dimensional explosion structure in an embodiment of the utility model;

[0034] Figure 3 It is a schematic diagram of a three-dimensional explosion structure in an embodiment of the utility model;

[0035] Figure 4 It is a schematic diagram of the planar structure in an embodiment of the utility model;

[0036] Figure 5 It is a schematic diagram of a three-dimensional explosion structure in an embodiment of the utility model;

[0037] Figure 6 It is a schematic diagram of a three-dimensional explosion structure in an embodiment of the utility model;

[0038] Figure 7 It is a schematic diagram of the cross-sectional plan structure of the oil outlet groove in the embodiment of the utility model;

[0039] Figure 8 It is a schematic diagram of the planar structure of the planetary gear in the embodiment of the utility model.

[0040] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0041] 1. Hydraulic valve block; 1a. Piston mounting hole; 1b. Mounting hole; 1c. Through hole; 1d. Piston pump cylinder; 1d.1. First oil outlet groove; 1d.2. Second oil outlet groove; 1d.3. Third oil outlet groove; 1f. Semicircular groove; 1f.1. First semicircular groove; 1f.2. Second semicircular groove; 1f.3. Third semicircular groove; 1g. Circular depression; 1h. Oil outlet channel; 1j. Countersunk hole; 2. Through hole; 2a. Piston pump; 2a1. Flange; 2a1.1. First semicircular notch; 2a1.2. Second semicircular notch; 2a1.3. Third semicircular notch; 2a1.4. Exhaust hole; 2b. Piston pump mounting gasket; 2c. Gear ring housing; 2d. Bearing; 2e. Screw nut; 2f. Ball screw; 2g. Gear pin; 2 h. Ring gear; 2j. Planetary gear; 3. Power unit; 3a. Motor housing; 3b. Motor flange; 4. Motor fixing bolts; 5. Power cord; 6. Fastening bolts; 7. Main leather cup; 8. Auxiliary leather cup; 9. Guide pin; 9.1. First guide pin; 9.2. Second guide pin; 9.3. Third guide pin; 10. Motor speed sensor; 11. Fixing sleeve; 11.1. First semicircular hole; 11.2. Second semicircular hole; 11.3. Third semicircular hole; 12. Pedal simulator assembly; 13. Electronic control unit assembly; 13.1. Circuit board; 13.2. Electromagnetic coil; 14. Electronic control unit protective cover; 15. Liquid reservoir assembly; 15.1. Liquid level sensor; 16. Plunger pump cylinder; 16.1. Rear cover component; 17. Solenoid valve. DETAILED DESCRIPTION

[0042] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0043] Example

[0044] like Figure 1-8 As shown, a hydraulic component assembly for a wire-controlled hydraulic brake system includes a hydraulic valve block 1 with a plunger pump pressure-building chamber inside, a plunger pump assembly 2 and a power device 3 arranged on the hydraulic valve block 1, the plunger pump assembly 2 includes a piston part and a transmission part, one end of the transmission part is assembled on the right side of the hydraulic valve block 1, and the other end is connected to the power device 3, the right end of the piston part is connected to one end of the transmission part, and the left end of the piston part extends into the hydraulic valve block 1, and a seal is provided on the outside of the piston part, and the piston part is slidably sealed with the hydraulic valve block 1 inside the plunger pump pressure-building chamber through the seal.

[0045] Among them, a plurality of oil circuits are arranged inside the hydraulic valve block 1 .

[0046] The working principle is: when braking, the power device 3 drives the piston part to slide along the pressure-building chamber of the plunger pump through the transmission part, and applies pressure to the oil circuit inside the hydraulic valve block to inject the brake fluid into different oil circuits, thereby realizing the controlled braking of the external vehicle body.

[0047] The above technical solution can set a plunger pump pressure chamber inside the hydraulic valve block 1, abandoning the technical solution of integrating the hydraulic valve block and the plunger pump cylinder body in the prior art, and integrating the existing hydraulic valve block and the plunger pump cylinder body into one component, thereby reducing the number of components in the BOM, reducing management and maintenance costs, and reducing the risk of system leakage;

[0048] At the same time, since the existing plunger pump cylinder bodies are embedded in the hydraulic valve block 1 and have a certain thickness, after assembly, the plunger pump hole in the hydraulic valve block 1 needs to reserve some space to accommodate the plunger pump cylinder body. After the plunger pump cylinder body and the hydraulic valve block 1 are designed as a whole, the cross-sectional area of ​​the plunger pump piston can be effectively increased. When the plunger pump stroke remains unchanged, the liquid storage capacity and displacement of the plunger pump system can be greatly increased; when the same displacement is required, the diameter of the plunger pump piston is increased, that is, the cross-sectional area is increased, and the stroke of the plunger pump piston can be reduced. In this way, the lateral width of the entire system can be reduced.

[0049] Preferably, a piston mounting hole 1a is provided inside the hydraulic valve block 1 and runs through it in the left and right directions. A plunger pump cylinder body 1d is provided on the left side of the hydraulic valve block 1. The plunger pump cylinder body 1d is concentrically arranged with the piston mounting hole 1a and is integrally formed with the plunger pump cylinder body 1d. The plunger pump cylinder body 1d and the piston mounting hole 1a form a plunger pump pressure-building chamber. The piston part is arranged inside the plunger pump pressure-building chamber and slides left and right inside it. A plurality of oil outlet grooves are provided on the bottom wall of the inner cavity of the plunger pump cylinder body 1d, and oil outlet channels 1h connected to the internal oil circuit of the hydraulic valve block 1 are opened inside the plurality of oil outlet grooves.

[0050] The sealing member includes a main leather cup 7 and a secondary leather cup 8, and both the main leather cup 7 and the secondary leather cup 8 are concentrically embedded in the inner wall of the piston mounting hole 1a, and are spaced apart from each other.

[0051] There are multiple oil outlet grooves, namely a first oil outlet groove 1d.1, a second oil outlet groove 1d.2 and a third oil outlet groove 1d.3.

[0052] The working principle is: when the power device 3 drives the piston part to move through the transmission part, the piston part moves from right to left along the piston mounting hole 1a. During the movement, the piston part pushes the brake fluid inside the plunger pump pressure chamber formed by the plunger pump cylinder body 1d and the piston mounting hole 1a into multiple oil circuits in the hydraulic valve block 1, thereby completing the braking work.

[0053] The above technical solution can increase the displacement per unit stroke of the plunger pump by arranging the plunger pump cylinder 1d to be concentrically integrally assembled on the hydraulic valve block 1, thereby reducing the overall volume of the entire device under a certain displacement requirement.

[0054] Preferably, the piston portion includes an internally hollow plunger pump piston 2a, a flange 2a1 and a guide pin 9, the flange 2a1 is arranged at one end of the plunger pump piston 2a and is integrally formed with the plunger pump piston 2a, the inner wall of the piston mounting hole 1a is provided with semicircular grooves 1f at intervals along its circumference, the flange 2a1 is provided with semicircular notches corresponding to the positions of the semicircular grooves 1f at intervals along its own circumference, the guide pin 9 is embedded in the strip groove, and is partially embedded in the semicircular notches and engages with each other, the hydraulic valve block 1 is concentrically provided with a countersunk hole 1j on the right side of the piston mounting hole 1a, the inner side wall of the countersunk hole 1j is provided with a circular depression 1g, a fixing sleeve 11 is embedded in the countersunk hole 1j, the side walls of the fixing sleeve 11 are provided with protrusions corresponding to the circular depression 1g, which are used for positioning the fixing sleeve 11 when it is embedded in the countersunk hole 1, and the inner wall of the fixing sleeve 11 is provided with a plurality of semicircular holes corresponding to the plurality of semicircular grooves and overlapping one by one.

[0055] Among them, the number of the semicircular grooves, the semicircular notches and the guide pins 9 are all multiple.

[0056] The plurality of semicircular grooves are respectively a first semicircular groove 1f.1, a second semicircular groove 1f.2 and a third semicircular groove 1f.3;

[0057] The plurality of semicircular holes are respectively the first semicircular hole 11.1, the second semicircular hole 11.2 and the third semicircular hole 11.3, and correspond to and overlap with the first semicircular groove 1f.1, the second semicircular groove 1f.2 and the first semicircular groove 1f.3 respectively;

[0058] The plurality of semicircular notches are respectively a first semicircular notch 2a1.1, a second semicircular notch 2a1.2 and a third semicircular notch 2a1.3;

[0059] Among them, the outer edge of the flange 2a1 is provided with an exhaust hole 2a1.4, and the exhaust hole 2a1.4 is used to balance the air pressure on both sides of the flange and reduce the resistance during the operation of the piston.

[0060] Among them, the multiple guide pins 9 are respectively a first guide pin 9.1, a second guide pin 9.2 and a third guide pin 9.3, and the three are respectively assembled on the first semicircular groove 1f.1, the second semicircular groove 1f.2 and the first semicircular groove 1f.3 in a one-to-one correspondence.

[0061] The working principle is: when the plunger pump piston 2a moves axially along the plunger pump pressure chamber driven by the transmission part, the guide pin 9 and the flange 2a1 are engaged with each other, so that the plunger pump piston 2a is torsionally displaced along the axial direction of the plunger pump piston 2a, thereby improving the torsion resistance of the plunger pump piston 2a during movement and improving the movement stability of the plunger pump piston 2a.

[0062] The above technical solution can be achieved by embedding a guide pin 9 inside the piston mounting hole 1a, and using the guide pin 9 to limit the plunger pump piston 2a circumferentially, and enabling it to move on the surface of the guide pin 9, thereby enhancing the torsion resistance of the plunger pump piston 2a and the stability during movement.

[0063] Preferably, the transmission part includes a plunger pump mounting gasket 2b, a bearing 2d, a planetary gear transmission assembly, a ball screw 2f and a nut 2e. The plunger pump mounting gasket 2b is concentrically mounted on the right side of the piston mounting hole 1a through a fastening bolt 6. The bearing 2d is embedded and torsionally arranged inside the plunger pump mounting gasket 2b. The planetary gear transmission assembly is arranged at one end of the bearing 2d and is connected to the nut 2e. The nut 2e is coaxially sleeved on the outside of the ball screw 2f and embedded in the inner ring of the bearing 2d. The ball screw 2f is fixedly assembled inside the plunger pump piston 2a, and the two sides of the planetary gear transmission assembly are respectively connected to the power device 3 and the nut 2e.

[0064] The working principle is: when the plunger pump piston 2a is transmitted and driven to move, the nut 2e is driven to rotate by the planetary gear transmission assembly to reduce speed and increase torque. The rotation of the nut 2e drives the small steel ball inside it to rotate. The rotating small steel ball drives the ball screw 2f to move linearly along the axis, thereby driving the plunger pump piston 2a to move linearly along the axis of the piston mounting hole 1a. By changing the rotation direction of the power device 3, the left and right displacement direction of the plunger pump piston 2a is realized.

[0065] The above technical solution can achieve stable linear motion of the plunger pump piston 2a by setting a planetary gear transmission assembly and cooperating with the ball screw 2f and the nut 2e to drive the piston 2a, thereby facilitating the subsequent pushing of brake fluid.

[0066] Preferably, the planetary gear transmission assembly includes a ring gear 2h, a ring gear housing 2c, multiple planetary gears 2j and multiple gear pins 2g. The ring gear housing 2c is coaxially mounted on the outer ring of the bearing 2d, the ring gear 2h is coaxially assembled on the inner wall of the ring gear housing 2c, the driving shaft of the power device 3 passes through the ring gear housing 2c and is equipped with a driving gear 3d, multiple planetary gears 2j are meshed with the driving gear 3d and the ring gear 2h, one end of the multiple gear pins 2g are coaxially connected to the multiple planetary gears 2j one by one, and the other ends of the multiple gear pins 2g are respectively fixedly assembled on the end of the nut 2e.

[0067] The working principle is: when it is necessary to drive the nut 2e to rotate, the driving gear 3d rotates, driving the multiple planetary gears 2j meshing with it to move circumferentially with the driving gear 3d as the center, thereby driving the nut 2e to rotate on the inner wall of the bearing 2d. When the nut 2e rotates, due to the limiting effect of the guide pin, it drives the ball screw 2f to perform axial linear displacement.

[0068] The above technical solution can be achieved by setting a planetary gear assembly so that it can reduce speed and increase torque to drive the nut 2e to rotate, so that the nut 2e can have enough torque to drive the ball screw to move circumferentially when rotating.

[0069] Preferably, the power device 3 includes a motor, a motor housing 3a and a motor flange 3b. One end of the motor housing 3a is open, and the motor is assembled inside the motor housing 3a. The motor flange 3b is arranged at the open end of the motor housing 3a and is integrally formed with the motor housing 3a. The motor flange 3b is concentrically assembled on the right side of the piston mounting hole 1a through the motor fixing bolt 4. The driving shaft of the motor passes through the ring gear housing 2c and is coaxially connected and fixed to the driving gear 3d.

[0070] The working principle is: when the planetary gear assembly needs to be driven to move, the driving shaft of the motor drives the driving gear 3d to rotate, and the driving gear 3d drives multiple planetary gears 2j to move, so as to drive the nut 2 to rotate and cooperate with the ball screw 2f to drive it to move axially.

[0071] The above technical solution can be achieved by setting up a motor and using the driving shaft of the motor to drive the driving gear 3d to rotate, thereby driving the planetary gear transmission assembly to move.

[0072] Preferably, it also includes a reservoir assembly 15 , which is mounted on the upper end of the hydraulic valve block 1 , and a liquid level sensor 15 . 1 is provided inside the reservoir assembly 15 for detecting the liquid level of the brake fluid inside the reservoir assembly 15 .

[0073] The working principle is as follows: by setting up a reservoir assembly 15 and assembling it on the hydraulic valve block 1, the reservoir assembly 15 detects the brake fluid level inside itself through the liquid level sensor 15.1. When the brake fluid level is lower than the MIN line, the liquid level sensor 15.1 is turned on and an alarm signal is provided to the motor vehicle driver to remind him to add brake fluid.

[0074] The above technical solution is achieved by providing a fluid reservoir assembly 15 , assembling it on the hydraulic valve block 1 , and injecting the brake fluid in the fluid reservoir assembly 15 into the hydraulic valve block 1 .

[0075] Preferably, it also includes an electronic control unit assembly 13 , which is mounted on a surface of the hydraulic valve block 1 close to the plunger pump cylinder 1 d and is used to control the power device 3 .

[0076] Among them, a power cord 5 is arranged inside the motor, and a mounting hole 1b for the power cord 5 to pass through is provided on the hydraulic valve block 1. After the power cord 5 passes through the hydraulic valve block 1, it is connected to the ECU for communication and power supply. A motor speed sensor 10 is arranged inside the motor, which is used to transmit the motor speed to the ECU to achieve precise control of the motor.

[0077] Among them, a solenoid valve 17 is provided on one side of the hydraulic valve block 1 close to the plunger pump cylinder 1d, and the solenoid valve 17 is sealed and fixed on the hydraulic valve block 1 by riveting;

[0078] Among them, a corresponding electromagnetic coil 13.2 is arranged at the same position as the electromagnetic valve on one side of the electronic control unit assembly 13 close to the electromagnetic valve 17;

[0079] A circuit board 13.1 is arranged on one side of the electronic control unit assembly 13 close to the electronic control unit protective cover 14, and the circuit board 13.1 is connected to the corresponding pins of the electromagnetic coil 13.2 to apply different control current signals to the electromagnetic coil 13.2;

[0080] The electronic control unit protection cover 14 is installed at the leftmost side of the electronic control unit 13 to seal the electronic control unit 13 and prevent foreign matter such as water vapor and dust from entering the electromagnetic control unit 13 .

[0081] The working principle is: by setting the electronic control unit assembly 13, after power is turned on, the electromagnetic coil 13.2 will generate a magnetic field, and the actuating element inside the electromagnetic valve 17 will be adsorbed under the action of the magnetic field, thereby opening the normally closed solenoid valve or closing the corresponding solenoid valve of the normally open solenoid valve, realizing the corresponding oil circuit opening and closing, and then realizing different functional requirements.

[0082] The above technical solution can be achieved by providing an electronic control unit assembly 13 and utilizing the internal solenoid valve to control the brake system for output.

[0083] Preferably, a pedal simulator assembly 12 is further included. The pedal simulator assembly 12 is assembled below the hydraulic valve block 1 and communicates with the oil circuit inside the hydraulic valve block 1 .

[0084] Among them, a blind hole is provided at the lower end of the hydraulic valve block 1, and a pedal simulator assembly 12 is arranged at the blind hole. The blind hole is connected to the oil circuit inside the hydraulic valve block 1, and an elastic element connected to the pedal simulator assembly 12 is arranged in the blind hole.

[0085] The working principle is: by setting the pedal simulator assembly 12, during the braking process, the brake fluid enters the blind hole accommodating the pedal simulator assembly 12, thereby providing a certain resistance when the user steps on the pedal, so that the user can get force feedback when stepping on the pedal.

[0086] The above technical solution can generate hydraulic compression on the elastic element of the pedal simulator assembly when the driver steps on the brake pedal. The elastic element generates a reaction force after being compressed, which reacts to the brake master cylinder through the hydraulic medium of the brake fluid and is then transmitted to the driver to provide the driver with foot feeling feedback.

[0087] Preferably, a brake master cylinder assembly 16 is further included. A through hole 1c is provided above the piston mounting hole 1a inside the hydraulic valve block 1. The brake master cylinder assembly 16 is assembled in the through hole 1c for braking the entire vehicle.

[0088] It also includes a rear cover component 16.1 connected and fixed to the brake master cylinder assembly 16. The rear cover component 16.1 is located at the rear of the through hole 1c, and a vehicle installation interface is provided on the rear cover component 16.1 for installing and fixing the brake master cylinder assembly 16 on the vehicle.

[0089] The working principle is: by assembling the brake master cylinder assembly, the user can timely convert the pedaling force into braking force through hydraulic medium for output to brake the vehicle.

[0090] The above technical solution can be implemented by providing a brake master cylinder assembly 16 so as to brake the vehicle.

[0091] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0092] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0093] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0094] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0095] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0096] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A hydraulic component assembly for a wire-controlled hydraulic brake system, characterized in that: The invention comprises a hydraulic valve block (1) having a plunger pump pressure-building chamber inside, a plunger pump assembly (2) and a power device (3) arranged on the hydraulic valve block (1), wherein the plunger pump assembly (2) comprises a piston part and a transmission part, wherein one end of the transmission part is assembled on the right side of the hydraulic valve block (1) and the other end is connected to the power device (3), the right end of the piston part is connected to one end of the transmission part, and the left end of the piston part extends into the interior of the hydraulic valve block (1), and a sealing member is provided on the outside of the piston part, and a sliding seal is formed between the piston part and the hydraulic valve block (1) in the interior of the plunger pump pressure-building chamber through the sealing member.

2. A hydraulic component assembly for a wire-controlled hydraulic brake system according to claim 1, characterized in that: The hydraulic valve block (1) is provided with a piston mounting hole (1a) penetrating the hydraulic valve block in the left and right directions. A plunger pump cylinder body (1d) is provided on the left side of the hydraulic valve block (1). The plunger pump cylinder body (1d) is arranged concentrically with the piston mounting hole (1a) and is integrally formed with the plunger pump cylinder body (1d). The plunger pump cylinder body (1d) and the piston mounting hole (1a) form the plunger pump pressure-building cavity. The piston part is arranged inside the plunger pump pressure-building cavity and slides left and right inside the cavity. A plurality of oil outlet grooves are provided on the bottom wall of the inner cavity of the plunger pump cylinder body (1d). The plurality of oil outlet grooves are provided with oil outlet channels (1h) connected to the internal oil circuit of the hydraulic valve block (1).

3. A hydraulic component assembly for a wire-controlled hydraulic brake system according to claim 2, characterized in that: The piston portion comprises a plunger pump piston (2a) with a hollow interior, a flange (2a1) and a guide pin (9); the flange (2a1) is arranged at one end of the plunger pump piston (2a) and is integrally formed with the plunger pump piston (2a); the inner wall of the piston mounting hole (1a) is provided with semicircular grooves (1f) spaced apart along its circumference; the flange (2a1) is provided with semicircular notches corresponding to the positions of the semicircular grooves (1f) spaced apart along its circumference; the guide pin (9) is embedded in the strip groove and partially embedded in the inner wall of the piston mounting hole (1a); The piston mounting hole (1a) is provided with a countersunk hole (1j) concentrically on the right side of the piston mounting hole (1a), and a circular depression (1g) is provided on the inner wall of the countersunk hole (1j). A fixing sleeve (11) is embedded in the countersunk hole (1j). The side walls of the fixing sleeve (11) are provided with protrusions corresponding to the circular depression (1g) for positioning the fixing sleeve (11) when it is embedded in the countersunk hole (1j). The inner wall of the fixing sleeve (11) is provided with a plurality of semicircular holes that correspond to and overlap with the plurality of semicircular grooves.

4. The hydraulic component assembly for a wire-controlled hydraulic brake system according to claim 3, characterized in that: The transmission part comprises a plunger pump mounting gasket (2b), a bearing (2d), a planetary gear transmission assembly, a ball screw (2f) and a nut (2e); the plunger pump mounting gasket (2b) is coaxially mounted on the right side of the piston mounting hole (1a) through a fastening bolt (6); the bearing (2d) is embedded and anti-torsionally arranged inside the plunger pump mounting gasket (2b); the planetary gear transmission assembly is arranged at one end of the bearing (2d) and is connected to the nut (2e); the nut (2e) is coaxially sleeved outside the ball screw (2f) and embedded in the inner ring of the bearing (2d); the ball screw (2f) is fixedly assembled inside the plunger pump piston (2a); and the two sides of the planetary gear transmission assembly are respectively connected to the power device (3) and the nut (2e).

5. The hydraulic component assembly for a wire-controlled hydraulic brake system according to claim 4, characterized in that: The planetary gear transmission assembly comprises a ring gear (2h), a ring gear housing (2c), a plurality of planetary gears (2j) and a plurality of gear pins (2g); the ring gear housing (2c) is coaxially sleeved on the outer ring of the bearing (2d); the ring gear (2h) is coaxially mounted on the inner wall of the ring gear housing (2c); the driving shaft of the power device (3) passes through the ring gear housing (2c) and is equipped with a driving gear (3d); the plurality of planetary gears (2j) are meshed with the driving gear (3d) and the ring gear (2h); one end of the plurality of gear pins (2g) is coaxially connected to the plurality of planetary gears (2j) in a one-to-one correspondence; the other ends of the plurality of gear pins (2g) are respectively fixedly mounted on the end of a nut (2e).

6. A hydraulic component assembly for a wire-controlled hydraulic brake system according to claim 5, characterized in that: The power device (3) comprises a motor, a motor housing (3a) and a motor flange (3b); one end of the motor housing (3a) is open, the motor is mounted inside the motor housing (3a), the motor flange (3b) is arranged at the open end of the motor housing (3a) and is integrally formed with the motor housing (3a); the motor flange (3b) is coaxially mounted on the right side of the piston mounting hole (1a) through a motor fixing bolt (4); the driving shaft of the motor passes through the ring gear housing (2c) and is coaxially connected and fixed to the driving gear (3d).

7. The hydraulic component assembly for a wire-controlled hydraulic brake system according to claim 1, characterized in that: It also comprises a liquid storage pot assembly (15), wherein the liquid storage pot assembly (15) is mounted on the upper end of the hydraulic valve block (1), and a liquid level sensor (15.1) is arranged inside the liquid storage pot assembly (15).

8. The hydraulic component assembly for a wire-controlled hydraulic brake system according to claim 2, characterized in that: It also includes an electronic control unit assembly (13), which is mounted on a surface of the hydraulic valve block (1) close to the plunger pump cylinder body (1d).

9. The hydraulic component assembly for a wire-controlled hydraulic brake system according to claim 1, characterized in that: It also includes a pedal simulator assembly (12), which is assembled below the hydraulic valve block (1) and is connected to the oil circuit inside the hydraulic valve block (1).

10. The hydraulic component assembly for a wire-controlled hydraulic brake system according to claim 1, characterized in that: It also includes a brake master cylinder assembly (16); a through hole (1c) is provided above the piston mounting hole (1a) inside the hydraulic valve block (1); and the brake master cylinder assembly (16) is assembled in the through hole (1c).

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