HYDRAULIC UNIT FOR A BRAKE SYSTEM

Abstract

A hydraulic unit for a brake system is disclosed. A hydraulic unit according to the present embodiment can comprise a main reservoir, a hydraulic block with a reservoir bore, a cylinder bore, a motor bore, a hydraulic flow path and a valve bore, and an electronic control unit, wherein the motor bore is provided on a first surface of the hydraulic block, wherein a housing of the electronic control unit is provided on a second surface of the hydraulic block, and the main reservoir comprises a coupling part, an extension part, and a connecting part.

Description

REFERENCE TO RELATED REGISTRATIONS

[0001] This application claims priority over Korean patent application No. 10-2024-0124688, which was filed with the Korean Intellectual Property Office on September 12, 2024, and whose disclosure is incorporated herein by reference. BACKGROUND area

[0002] The present disclosure relates to a hydraulic unit for a braking system and in particular to a hydraulic unit for a braking system which generates a braking force using an electrical signal corresponding to a deflection of a brake pedal. Description of the state of the art

[0003] A vehicle is essentially equipped with a braking system for slowing down the vehicle. Various types of braking systems have been proposed to ensure the safety of the driver and passengers.

[0004] The state-of-the-art braking system primarily functions as follows: when the driver depresses the brake pedal, a brake booster mechanically linked to the pedal supplies a wheel cylinder with the fluid pressure required to decelerate the vehicle. However, as the market increasingly demands diverse braking functions to suit different vehicle operating environments, integrated dynamic brakes (IDBs) have become widespread. In these systems, when a driver depresses the brake pedal, a pedal travel sensor detects pedal movement and sends an electrical signal to indicate the driver's braking intention. A fluid pressure supply device then responds to this electrical signal by supplying a wheel cylinder with the fluid pressure required to decelerate the vehicle.

[0005] An integrated braking system can generate stable, strong braking force by integrating a master brake booster and electronic stability control (ESC). Generally, the integrated braking system includes a configuration where a pedal position sensor actuates a motor by sending an electrical signal indicating brake pedal actuation. A piston pump in a hydraulic pressure generating device creates hydraulic brake pressure in response to the motor's actuation, and an electronic control unit regulates and transmits the hydraulic pressure to the wheels. Additionally, a master cylinder is provided in a hydraulic block equipped with a hydraulic circuit to directly transfer the pedal force from the brake pedal to a wheel cylinder if the system malfunctions.

[0006] A reservoir is provided to supply the integrated brake system with a pressurized medium, such as brake fluid, to perform a braking operation using the integrated brake system described above. Typically, the reservoir stores the pressurized medium and is connected to the upper part of the master cylinder. The reservoir may also be connected to the piston pump, which generates fluid pressure in the integrated brake system's fluid pressure generation device.

[0007] The reservoir is installed in various ways to supply the integrated brake system with the pressurized fluid. However, the problem is that it is difficult to install the reservoir in the limited space within the vehicle.

[0008] Furthermore, there is the problem that an oil opening in the reservoir, through which the pressurized medium is inserted or drained, is exposed to air under driving conditions and certain braking conditions, and air enters the braking system, affecting pedal feel and braking performance. DEMOLITION

[0009] One objective of the present embodiment is to provide a hydraulic unit for a braking system that is capable of simplifying the installation and arrangement of a vehicle.

[0010] Another objective to be achieved by the present embodiment is to provide a hydraulic unit for a brake system that can be compact and simultaneously perform various functions.

[0011] Another objective of the present embodiment is to provide a hydraulic unit for a braking system that is able to improve the degree of freedom of the design and the space utilization of a vehicle.

[0012] Another objective of the present embodiment is to provide a hydraulic unit for a brake system that is able to ensure the durability and operational stability of devices by preventing interference with peripheral component elements.

[0013] Another objective of the present embodiment is to provide a hydraulic unit for a brake system that is capable of effectively preventing air from being introduced into the brake system.

[0014] Another objective of the present embodiment is to provide a hydraulic unit for a braking system that is capable of preventing a deterioration of pedal feel and braking performance.

[0015] One aspect of the present disclosure provides for a hydraulic unit comprising: a main reservoir or main storage tank configured to receive a pressurized medium; a hydraulic block with a reservoir bore configured to communicate with the main reservoir, a cylinder bore in which a master cylinder connected to a brake pedal is provided, a motor bore in which a motor configured to generate fluid pressure by being operated by an electrical signal issued in response to a movement of the brake pedal is provided, a hydraulic flow path, and a valve bore in which a valve is provided that is configured to control a flow of the pressurized medium through the hydraulic flow path;and an electronic control unit configured to control the operation of the motor and the valve based on information about the movement of the brake pedal, the motor bore being provided on a first surface of the hydraulic block, a housing of the electronic control unit being provided on a second surface of the hydraulic block, which is a surface opposite the first surface, the main reservoir comprising: a coupling part provided on a third surface, which delimits a front side surface between the first surface and the second surface; an extension part provided in a direction corresponding to a longitudinal direction of the housing; and a connecting part configured to allow the coupling part and the extension part to communicate with each other, and which is provided to surround a front side surface of the housing.

[0016] The coupling part may comprise: a first mounting area connected to the third surface of the hydraulic block; a second mounting area connected to a fourth surface forming an upper surface between the first surface and the second surface of the hydraulic block; and a reservoir area provided between the first mounting area and the second mounting area.

[0017] The extension part can be designed to be located at a predetermined distance from the housing.

[0018] The connecting part can be designed to be located at a predetermined distance from the front side surface of the housing.

[0019] The main container can be formed by connecting an upper main body with a lower main body.

[0020] The hydraulic unit may further comprise: a remote container or reservoir configured to store the pressurized medium, wherein the upper main body includes a first connecting or connection opening configured to receive the pressurized medium from the remote container.

[0021] An upper surface of the upper main body can comprise a first and a second section, each shaped such that they are inclined towards two opposite ends based on the first connecting opening.

[0022] The first section can have a first angle of inclination, so that the air is directed from one end of the upper main body to the first connecting opening, and the second section can have a second angle of inclination, so that the air is directed from the other end of the upper main body to the first connecting opening.

[0023] The first connecting opening can be designed to be inclined upwards from a lower surface of the upper main body.

[0024] The lower main body may contain a plurality of oil connections which are connected to the third surface of the hydraulic block and are designed to supply the pressurized medium.

[0025] The remote container may include: an injection part designed to inject the pressurized medium; and a second connecting opening designed to supply the pressurized medium to the main container, and the pressurized medium may be stored in the remote container.

[0026] The hydraulic unit may further include: a connecting element designed to connect the first connecting port and the second connecting port, so that the pressure medium is transferred from the remote reservoir to the main reservoir.

[0027] The main container may comprise: a main container chamber designed to store the pressurized medium; and at least one partition wall designed to divide the main container chamber into a plurality of chambers.

[0028] The lower main body may include a receiving area configured to receive a sensing part configured to detect a level of the pressurized medium located in the main reservoir chamber, and a warning lamp switch designed to warn a driver based on a signal detected by the sensing part.

[0029] The reservoir bore can be provided in the third surface of the hydraulic block.

[0030] The cylinder bore can be provided in a fifth face of the hydraulic block, which defines a rear side face between the first face and the second face.

[0031] The valve bore can be provided in the second surface of the hydraulic block.

[0032] The electronic control unit may include a connecting element configured to supply power to a circuit board or to transmit an electrical signal, and the connecting element may be positioned on an upper side of a fourth face of the hydraulic block, which defines an upper surface between the first surface and the second surface.

[0033] Another aspect of the present disclosure provides for a hydraulic unit comprising: a master cylinder connected to a brake pedal; a hydraulic block having a plurality of hydraulic flow paths and configured such that the master cylinder is mounted on the hydraulic block; an electronic control unit installed on a side face of the hydraulic block and configured to control the operation of a motor and a valve mounted on the hydraulic block; and a main reservoir mounted on a front face of the hydraulic block having a "C" shape configured to surround the electronic control unit, the main reservoir containing a pressurized medium and having a plurality of chambers separated by a plurality of partitions.

[0034] A braking system with one of the hydraulic units will be provided.

[0035] The hydraulic unit for a brake system according to the present embodiment can easily implement the installation and arrangement of the vehicle.

[0036] The hydraulic unit for a brake system according to the present embodiment can be designed to have a compact size while simultaneously fulfilling various functions.

[0037] This hydraulic unit for a brake system according to the present embodiment can improve the degree of design freedom and the space utilization of the vehicle.

[0038] The hydraulic unit for a braking system according to the present embodiment can ensure the durability and operational stability of the devices by preventing damage to the peripheral components.

[0039] The hydraulic unit for a brake system according to the present embodiment can effectively prevent air from entering the brake system.

[0040] The hydraulic unit for a braking system according to the present embodiment can prevent a deterioration of pedal feel and braking performance.

[0041] The effects of this disclosure are not limited to the effects mentioned above, and other effects not mentioned above will be obviously understood by a person with ordinary knowledge in the field of technology from the following description.

[0042] The objectives to be achieved by the present disclosure, the means of achieving the objectives and the effects of the present disclosure described above do not specify any essential features of the claims, and therefore the scope of the claims is not limited to the disclosure of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The above and other aspects, features and other advantages of the present disclosure will be more clearly understood from the following detailed description in conjunction with the accompanying drawings, in which: Fig. Figure 1 is a perspective view showing a hydraulic unit according to the present embodiment; Fig. Figure 2 is a side view showing the hydraulic unit according to the present embodiment; Fig. Figure 3 is a top view showing the hydraulic unit according to the present embodiment; Fig. Figure 4 is a side view (front view) showing the hydraulic unit as seen from a different direction according to the present embodiment; Fig. Figure 5 is a perspective view showing a main container according to the present embodiment; Fig. Figure 6 is a side view showing the main container according to the present embodiment; Fig. Figure 7 is a front view showing the main container according to the present embodiment; Fig. Figure 8 is a view illustrating a structure in which the main container is connected to a remote container according to the present embodiment; and Fig. Figure 9 is a perspective view showing a hydraulic block according to the present embodiment. DETAILED DESCRIPTION OF THE EXAMPLES OF EXECUTION

[0044] The exemplary embodiment of the present disclosure is described below with reference to the accompanying drawings and exemplary embodiments. For the purposes of description, the scales of the components shown in the accompanying drawings differ from the actual scales, so that the scales are not limited to those shown in the drawings.

[0045] In the following, embodiments of the present disclosure are described in detail with reference to the accompanying drawings. The following embodiments are presented to adequately convey the spirit of the present disclosure to the person skilled in the art, to whom the present disclosure relates. The present disclosure is not limited to the embodiments presented here and may be supplemented by other aspects. Elements that are irrelevant to the description of the present disclosure are omitted from the drawings in order to present the disclosure clearly. The sizes of the individual elements may be somewhat exaggerated for better understanding.

[0046] Fig. Figure 1 is a perspective view showing a hydraulic unit according to the present embodiment.

[0047] Fig. Figure 2 is a side view showing the hydraulic unit according to the present embodiment.

[0048] Fig. Figure 3 is a top view showing the hydraulic unit according to the present embodiment.

[0049] Fig. Figure 4 is a side view (front view) showing the hydraulic unit as seen from a different direction according to the present embodiment.

[0050] With reference to the Fig. 1 to 4, a hydraulic unit 1 according to the present embodiment can comprise a master cylinder 500 connected to a brake pedal (not shown), a hydraulic block 100 with multiple hydraulic flow paths (not shown) and multiple bores, an electronic control unit 200 configured to control the operation of a motor 300 and a valve mounted on the hydraulic block 100, and a main reservoir 400 configured to receive a pressurized medium.

[0051] The hydraulic block 100 can have a hexahedral shape, the multiple hydraulic flow paths can be provided in the hydraulic block 100 and define movement paths for the pressurized medium, the multiple bores can be provided in an outer part of the hydraulic block 100, and various types of component elements, such as the main cylinder 500 and the motor 300, can be mounted in the multiple bores.

[0052] In particular, the hydraulic block 100 comprises a cylinder bore in which the master cylinder 500 is provided, which is connected to the brake pedal and is configured to operate in accordance with an actuation of the brake pedal; a motor bore 111 in which the motor 300 is configured to generate a fluid pressure of the pressure medium required for the braking operation by being operated by an electrical signal issued in response to a displacement of the brake pedal; valve bores in which a plurality of valves are provided, which are configured to control the flow of the pressurized medium through the hydraulic flow paths; reservoir bores 112, which are configured to communicate with the main reservoir 400, which is configured to receive the pressurized medium; and wheel connections 113, each of which is connected to a plurality of wheel cylinders.

[0053] The top, bottom, front, and back described below refer to the front, bottom, left side, and underside, respectively, based on Fig. 2. The thickness direction and the longitudinal direction refer to the upward / downward direction and the left / right direction according to Fig. 3. These terms serve to improve the understanding of the present revelation and are to be understood as relative concepts with which positions and directions can be clearly defined without being limited to specific directions or locations.

[0054] Fig. Figure 9 is a perspective view showing the hydraulic block 100 according to the present embodiment. With reference to the Fig. 1 to 4 and 9, the motor bore 111 can be provided in a first surface 101 of the hydraulic block 100, which is a relatively large surface, and a housing 230 of the electronic control unit 200 can be provided on a second surface 102, which is a relatively large surface and is opposite the first surface 101. The valve bores, in which the majority of the valves are provided, can also be provided in the second surface 102 and electrically connected to the electronic control unit 200 mounted on the second surface 102.

[0055] The motor bore 111 and the valve bore can be recessed in the hydraulic block 100 and extend parallel to the thickness direction between the first surface 101 and the second surface 102. A hydraulic piston (not shown), actuated by the motor 300, can be inserted into the motor bore 111 and move back and forth. The valve bore can also be recessed into the second surface 102 in the same axial direction as the motor bore 111. Various types of solenoid valves and check valves can be inserted and mounted in the valve bores to control the flow of the pressurized medium along the hydraulic flow paths.

[0056] In a third surface 103 of the hydraulic block 100, which defines a front side surface between the first surface 101 and the second surface 102, reservoir bores 112 can be formed. If the reservoir bore 112 were located on the top of the hydraulic block 100, the size of the product could increase in the upward / downward direction, since the main reservoir 400 is located on the top of the hydraulic block 100. Therefore, in the hydraulic block 100 according to the present embodiment, the reservoir bore 112, which communicates with the main reservoir 400, is located in the third surface 103, i.e., the front side surface, instead of on the top surface, thus preventing an increase in the size and volume of the hydraulic unit 1 in the upward / downward direction. Further details are described below.

[0057] The main tank 400 can be connected to the hydraulic block 100 via the tank bore 112 and supply the pressurized medium.

[0058] The master cylinder 500, connected to the brake pedal, can be provided in the cylinder bore. The cylinder bore can be recessed and extended in a fifth surface 105 of the hydraulic block 100, which defines a rear side surface between the first surface 101 and the second surface 102.

[0059] The cylinder bore can be formed in the hydraulic block 100 and extend in the forward / reverse direction, and an actuating axis of the master cylinder 500 can also be provided in a direction parallel to the forward / reverse direction of the hydraulic block 100. The axis of the master cylinder 500 is arranged in the direction parallel to the forward / reverse direction of the hydraulic block 100, and an axis of the motor 300 is arranged in the direction parallel to the thickness of the hydraulic block 100, so that the axis of the master cylinder 500 and the axis of the motor 300 can be orthogonal to each other, and as a result, the arrangements of the master cylinder 500 and the motor 300 of the hydraulic unit 1 can be implemented efficiently. Reference numeral 600 denotes a bracket used to attach the hydraulic block 100 to a vehicle body.The bracket 600 is connected to the fifth surface 105 of the hydraulic block 100 and is mounted and fastened to the vehicle body by means of a multitude of screws 601, so that the hydraulic block 100 can be stably attached and supported to the vehicle body with the help of the bracket.

[0060] The electronic control unit 200 can be configured to control the operation of the motor 300 and the valves based on information about the movement of the brake pedal or information acquired by various types of sensors (not shown).

[0061] The electronic control unit 200 can include a printed circuit board (not shown) provided on the second surface 102 of the hydraulic block 100, which is opposite the first surface 101 on which the motor 300 is located. The printed circuit board can be connected to the valves mounted in the valve bores and configured to receive power from a power supply unit (not shown) or to receive an electrical signal via a signal transmission unit (not shown). Furthermore, the electronic control unit 200 can include a connecting element 210 configured to supply power to the printed circuit board or to transmit an electrical signal to the printed circuit board, and a housing 220 configured to receive the printed circuit board and having an outer surface on which the connecting element 210 is provided.

[0062] The power supply can power the circuit board from a vehicle battery (not shown). The power supply can deliver and transfer energy.

[0063] The connecting element 210 can be positioned on the upper side of a fourth surface 104 of the housing 220, which defines an upper surface between the first surface 101 and the second surface 102 of the hydraulic block 100. If, in this case, as in Fig. As shown in Figure 2, the connecting element 210 is provided in a form extending in one direction and having a large width 210a and a small width 210b. The large width 210a of the connecting element 210 can be arranged on the housing 220 in the forward / reverse direction, which can suppress an increase in the size of the hydraulic unit 1 in the upward / downward direction. Furthermore, the connecting element 210 can be arranged at a position between an upper end of the housing 220 and the fourth surface 104 of the hydraulic block 100.This means that the connecting element 210 is positioned at a height between the upper end of the housing 220, which corresponds to the top end of the hydraulic unit 1, and the fourth surface 104, which is the upper surface of the hydraulic block 100, thus preventing the size of the hydraulic unit 1 from being increased in the upward / downward direction by the housing 220 and the connecting element 210 of the electronic control unit 200.

[0064] To prevent a pipe or similar component connected to the connecting element 210 from colliding with peripheral component elements, the connecting element 210 can be arranged so that it is inserted and coupled in a direction corresponding to the thickness between the first surface 101 and the second surface 102 of the hydraulic block 100. Therefore, a pipe connected to the connecting element 210 can also be arranged between the upper end of the housing 220 and the fourth surface 104 of the hydraulic block 100, thus minimizing obstruction and contact between the pipe and peripheral component elements and minimizing the upward / downward expansion of the hydraulic unit 1.

[0065] The housing 220 is mounted on the second surface 102 of the hydraulic block 100 and has a receiving space in which a control device (not shown) is housed, which serves to control the motor 300 and the several valves. To form the receiving space, the housing 220 can comprise a housing body open on one side and a cover connected to the open side of the housing body.

[0066] Generally, the main reservoir, designed to hold the pressure medium, is positioned to extend upwards and downwards within an area corresponding to the third surface 103 of the hydraulic block 100, where the reservoir bore 112 is formed. However, a problem arises in that, due to space constraints during vehicle assembly design processes, the application of this structure cannot meet the diverse needs of customers. Meanwhile, assembly design encompasses a series of technical processes that efficiently design and arrange the main components of the entire vehicle, taking into account various constraints on these components. Assembly design ensures customer comfort and optimizes usability.

[0067] The main reservoir 400 according to the embodiment of the present disclosure can be attached to the front, i.e. the third surface 103 of the hydraulic block 100, and can have a “C” shape to surround the electronic control unit 200, so that the main reservoir 400 can be easily installed in a limited space of the vehicle.

[0068] In relation to Fig. 3. According to the embodiment of the present disclosure, the main reservoir 400 has a "C" shape, which is designed to surround the electronic control unit 200, in particular the front side surface of the housing 220, and comprises a coupling part 410, a connecting part 420, and an extension part 430 extending from bottom to top in a thickness direction. That is, the coupling part 410 and the extension part 430 can be connected to each other by the connecting part 420 and communicate with each other, define a space, store the pressure medium therein, and be mounted on the third surface 103 of the hydraulic block 100.

[0069] Fig. Figure 2 shows that the main reservoir 400, according to the present disclosure, is mounted such that it is inclined towards the front of the hydraulic block 100. This is a visual result obtained when the arrangement directions of the hydraulic block 100, the electronic control unit 200, and the main cylinder 500 are represented in the horizontal direction. A specific assembly of the main reservoir 400 according to the embodiment of the present disclosure is described below with reference to the Fig. 5 to 7 described.

[0070] Fig. Figure 5 is a perspective view showing the main container according to the present embodiment.

[0071] Fig. Figure 6 is a side view showing the main container according to the present embodiment.

[0072] Fig. Figure 7 is a front view showing the main container according to the present embodiment.

[0073] As in the Fig. As shown in Figures 5 to 7, the main vessel 400 essentially comprises the coupling part 410, the connecting part 420, and the extension part 430. In this case, the coupling part 410, the connecting part 420, and the extension part 430 are separated as three zones to describe the structure of the main vessel 400. The zones are arranged to be essentially interconnected, defining a receiving space and storing the pressurized medium within it.

[0074] The coupling part 410 is provided on the third surface 103 of the hydraulic block 100, which defines the front side surface between the first surface 101 and the second surface 102, and the coupling part 410 is designed to stably couple the main reservoir 400 to the hydraulic block 100.

[0075] The coupling part 410 comprises a first mounting area 411, a second mounting area 412 and a container area 413, which is provided between the first mounting area 411 and the second mounting area 412.

[0076] The first fastening area 411 can protrude and extend in such a way that it is connected to the third surface 103 of the hydraulic block 100 by fastening elements such as screws.

[0077] In particular, the first fastening area 411 can comprise a plurality of first fastening holes 411a which are intended to be penetrated by the fastening elements, such as screws, and a plurality of oil connections 411b which are connected to the third surface 103 of the hydraulic block 100 and are provided for the supply of the pressure medium.

[0078] The first mounting hole 411a can be provided at a position at a lower end of the first mounting area 411 in order to stably connect and fasten the main reservoir 400 to the third surface 103 of the hydraulic block 100. The drawings show that two first mounting holes 411a are provided. However, the present disclosure is not necessarily limited to this.

[0079] The oil connection 411b can be integrated into the first mounting area 411 of the main tank 400.

[0080] The oil connections 411b can be designed to correspond to the positions of the several reservoir bores 112 formed in the third surface 103 of the hydraulic block 100 and to supply the pressure medium housed in the main reservoir 400 to the main cylinder 500 or the hydraulic piston (not shown).

[0081] Meanwhile, the main tank 400 can have a main tank chamber (not shown) configured to store the pressurized medium, and the main tank chamber can be subdivided into a plurality of chambers by a plurality of partitions.

[0082] The drawings show that the first mounting area 411 has three oil ports 411b. However, a specific number of oil ports 411b can correspond to the number of chambers (not shown) separated by a plurality of partitions (not shown). In a non-restrictive example, if the main reservoir chamber is divided into a first to third main reservoir chamber, the oil ports 411b can include a first oil port for connection to the first main reservoir chamber, a second oil port for connection to the second main reservoir chamber, and a third oil port for connection to the third main reservoir chamber. Therefore, the pressurized medium stored in the main reservoir chambers can be supplied to or discharged from them via the oil ports.

[0083] The first and second oil ports can be connected to the first and second main chambers (not shown) in the master cylinder, respectively, and the third oil port can be connected to a hydraulic piston pressure chamber (not shown). The connection structure is an example, and the present disclosure is not limited to it. That is to say, the first and third oil ports can be connected to the master cylinder, and the second and third oil ports can be connected to the master cylinder.

[0084] In the event that the aforementioned main reservoir chamber is subdivided into the first to third main reservoir chambers, the reservoir bores 112 can be provided as a plurality of reservoir bores 112, so that the pressurized medium flows smoothly between the first to third main reservoir chambers of the main reservoir 400, the pressure chamber, and the main chamber provided in the hydraulic block 100. In particular, the reservoir bores 112 can comprise a first reservoir bore configured to communicate with the first main chamber so that the chambers separated in the main reservoir 400 can communicate with the hydraulic block 100, a second reservoir bore configured to communicate with the second main chamber, and a third reservoir bore configured to communicate with the pressure chamber. However, the connection structure is only an example, and the present disclosure is not limited to it.

[0085] The majority of oil connections 411b formed on the first mounting area 411 can be shaped to correspond to the positions of the reservoir bores 112 of the hydraulic block 100 and the specific number of chambers defined by the subdivision of the main reservoir chamber in the main reservoir 400 by the partitions, and the majority of oil connections 411b can be connected to the main cylinder and / or the hydraulic piston in various ways.

[0086] The majority of oil connections 411b formed on the first mounting area 411 are connected to the reservoir area 413, so that the medium under pressure in the main reservoir 400 is introduced or discharged through the reservoir area 413 of the coupling part 410.

[0087] As in the Fig. 2 and Fig. As shown in Figure 4, the coupling part 410 can further comprise a web section 414 configured to connect with the reservoir area 413 and the respective oil connection, thus preventing the length of the reservoir area 413 from increasing excessively depending on the positions where the majority of oil connections 411b are located. In this case, the first two mounting holes 411a can be provided at the lower ends of two opposite sides of the web section 414 to secure the main reservoir 400 to the third surface 103 of the hydraulic block. Because the web section 414 is included, the volume of the reservoir area 413 can be easily adjusted.

[0088] The second fastening area 412 can project and extend to be connected to the fourth surface 104 of the hydraulic block 100, which defines the upper surface between the first surface 101 and the second surface 102, by means of fastening elements such as bolts.

[0089] The second fastening area 412 can comprise a plurality of second fastening holes 412a into which the fastening elements, such as bolts, can penetrate. The drawings show that two second fastening holes 412a are provided. However, the present disclosure is not necessarily limited to this.

[0090] The coupling part 410 according to the embodiment of the present disclosure can stably attach the main container 400 to the hydraulic block 100 by means of the first and second fastening areas 411 and 412 respectively, which are provided on mutually perpendicular surfaces, and the coupling part 410 can receive the pressure medium with maximum utilization of the front surface space of the hydraulic block 100, which is advantageous with regard to space utilization and the receiving capacity of the pressure medium.

[0091] As in the Fig. 6 and Fig. As shown in Figure 7, the main reservoir 400 can be formed by connecting an upper main body 401 and a lower main body 402. If an axis passing through a horizontal plane adjacent to a lower surface of the upper main body 401 and an upper surface of the lower main body 402 is referenced to a horizontal axis A, and an axis defined as being perpendicular to the horizontal axis A is referenced to a vertical axis B, the first mounting area 411 can be shaped to be inclined at a predetermined angle to a front face of the hydraulic block based on the vertical axis B. Therefore, the plurality of hydraulic pressure ports 411b formed on the first mounting area 411 can also be shaped to be inclined downwards based on the vertical axis B, thus facilitating the supply of the pressurized medium.Although not shown, the majority of the reservoir bores 112 formed in the hydraulic block 100 can also be formed such that they have a predetermined angle of inclination, so that the majority of the reservoir bores 112 can be connected to the hydraulic pressure ports 411b while corresponding to the direction in which the hydraulic pressure ports 411b are inclined.

[0092] The reservoir section 413 is located between the first mounting area 411 and the second mounting area 412 and is positioned so that it adjoins the third surface 103 of the hydraulic block 100. The reservoir section 413 can form a space with the connecting part 420 and the extension part 430, which are described below, and can contain the pressurized medium. Details are described below.

[0093] The extension part 430 is designed to extend in a direction corresponding to the longitudinal direction of the housing 220 of the electronic control unit 200.

[0094] In particular, the extension part 430 is shaped such that it extends from the third surface 103, which is the front of the hydraulic block 100, to the fifth surface 105, which is the rear of the hydraulic block 100. The fifth surface 105 has the cylinder bores and is the surface of the hydraulic block 100 that forms the rear side surface between the first surface 101 and the second surface 102.

[0095] The extension part 430 is designed to be spaced at a predetermined distance from the housing 220 of the electronic control unit 200.

[0096] The extension part 430 can comprise an inner surface 431 configured to run parallel to and adjacent to the housing 220, an outer surface 432 configured to be spaced apart from the inner surface 431 in the direction of the thickness of the electronic control unit 200 or the housing 220, a first connecting surface 433 configured to connect the inner surface 431 and the outer surface 432, and a second connecting surface 434 configured to be opposite the first connecting surface 433.

[0097] This means that the configuration in which the extension part 430 is spaced at a predetermined distance from the housing 220 of the electronic control unit 200 means that the predetermined distance is formed between the inner surface 431 of the extension part 430 and the housing 220, and the outer surface 432 is an outwardly facing surface. In this case, the outer surface 432 refers to a surface opposite the inner surface 431, i.e., a surface that is directed upwards, as shown in Fig. 3 shown.

[0098] The extension part 430 is surrounded by the inner surface 431, the outer surface 432, the first connection surface 433 and the second connection surface 434 and stores the pressurized medium in an interior space which is sealed by an upper body and a bottom surface 435, which are described below.

[0099] According to the embodiment of the present disclosure, a receiving area 450 can be provided in a lower region of the extension part 430 of the main container 400.

[0100] Based on the upper surface of the lower main body 402, the base surface 435 of the extension part 430 can have a first base surface 435a with a first depth and a second base surface 435b with a second depth. The first depth can be greater than the second depth. The receiving area 450 can be provided at a lower end of the second base surface 435b and can include a detection element (not shown) and a warning lamp switch 460.

[0101] The sensing element (not shown) can determine the quantity of the pressurized medium in the main vessel 400 by detecting the level of the pressurized medium in the main vessel chamber within the main vessel 400. The sensing element can be located in the receiving area 450 and detect whether the quantity of the pressurized medium reaches or falls below a predetermined level, in accordance with an upward / downward movement of a float provided in the main vessel 400.

[0102] The warning light switch 460 is located in the receiving area 450 and is designed to issue a warning to the driver in response to a signal detected by the sensing unit. That is, if the level of the pressurized medium in the main reservoir 400 reaches or falls below a predetermined level, the driver can be warned by activating the warning light switch 460, which will illuminate a warning light on a display unit in the vehicle.

[0103] The warning lamp switch 460 can be mounted on the outer surface 432 of the extension part 430 and directed outwards. In this case, the outer surface refers to an upward-facing surface, as shown in Fig. 3 shown.

[0104] In the main container 400 according to the embodiment of the present disclosure, the warning lamp light switch 460, which is directed towards the outside of the outer surface 432, is housed in the receiving area 450, which is provided at the lower end of the extension part 430, so that spatial utilization can be ensured and in particular a space restriction during the vehicle assembly design process can be reduced, thereby enabling assembly designs to be implemented in a more efficient and diverse manner.

[0105] The connecting part 420 enables the coupling part 410 and the extension part 430 to communicate with each other and is designed to run parallel to the front side surface of the housing 230.

[0106] The connecting part 420 is designed to be spaced at a predetermined distance from the front side surface of the housing 230.

[0107] The connecting part 420 can have an inner connecting surface 421 adjacent to the front side surface of the housing 230, and an outer connecting surface 422 opposite the inner connecting surface 421.

[0108] This means that the container area 413 of the coupling part 410 can be configured to have a structure that is connected inwards to the inner connecting surface 421 of the connecting part 420 and the inner surface 431 of the extension part 430, forming a "C" shape that surrounds the electronic control unit 200. The drawings show that the outer connecting surface 422 of the connecting part 420 is formed obliquely on a planar structure with respect to the second connecting surface 434 of the extension part 430. However, the outer connecting surface 422 does not necessarily have to be configured as described above.

[0109] The main container 400 with the “C” shape can be formed by connecting the upper main body 401 with a “C” shape and the lower main body 402 with a “C” shape. That is, the coupling part 410, the connecting part 420 and the extension part 430 can relate to the lower main body 402, and the upper main body 401 can be designed to fit the shape of the lower main body 402, which is provided in accordance with the specific shapes of the coupling part 410, the connecting part 420 and the extension part 430.

[0110] The main reservoir chamber (not shown), which is the space within the main reservoir 400, is formed by connecting the upper main body 401 and the lower main body 402, and the pressurized medium is stored in the main reservoir chamber. The main reservoir chamber can be connected to the main cylinder 500 or the hydraulic piston (not shown) via the reservoir bore 112 formed in the hydraulic block 100.

[0111] The upper main body 401 contains a first connection opening 440.

[0112] The first connecting opening 440 can be configured to receive the pressurized medium from a remote container 700, to be described below, and the first connecting opening 440 can be integrated into the upper main body 401. In particular, the first connecting opening 440 can be provided at a location next to the upper main body 401, corresponding to the coupling part 410 and the connecting part 420.

[0113] With reference to Fig. 6. The first connecting opening 440 can be provided such that it is inclined towards the lower surface of the upper main body 401, i.e., inclined upwards with respect to the horizontal axis A. In this case, a large angle of inclination is advantageous when releasing air, but the first connecting opening 440 can be designed to have an angle of inclination of 60° or less with respect to the horizontal axis A in terms of space utilization.

[0114] Air can be introduced into the brake system if air is supplied during the delivery of the pressure medium from the remote reservoir 700, or if air enters the oil port 411b through which the pressure medium is supplied or discharged. Since the ingress of air leads to a deterioration of pedal feel and braking performance over time, preventing air from entering the brake system is important for braking performance.

[0115] The first connecting opening 440 according to the embodiment of the present disclosure is provided such that it has a predetermined angle of inclination with respect to the horizontal axis A, so that the air present in the main container 400 can flow through a connecting element 800, which is described further below, in the direction of the first connecting opening 440 and is guided in such a way that it is expelled in the direction of an injection part 710 of the remote tank 700.

[0116] The upper surface of the upper main body 401 can comprise first and second sections 401a and 401b, which are shaped to be inclined towards two opposite ends based on the first connecting opening 440. In particular, the first section 401a can be the upper surface of the upper main body 401 corresponding to the connecting part 420 and the extension part 430, and the second section 401b can be the upper surface of the upper main body 401 corresponding to the coupling part 410.

[0117] To maximize the effect of the air discharge, the first section 401a according to the embodiment of the present disclosure can have a first angle of inclination such that air is discharged from one end of the upper main body 401 to the first connection opening 440, and the second section 401b can have a second angle of inclination such that air is discharged from the other end of the upper main body 401 to the first connection opening 440.

[0118] The first and second angles of inclination can be the same. The angle of inclination can be 60° or less to allow air to be easily released without increasing the volume of the main container 400 in proportion to the increase in height of the upper main body 401.

[0119] Fig. Figure 8 is a view illustrating a structure in which the main tank is connected to the remote tank according to the present embodiment.

[0120] With reference to Fig. 8. According to the embodiment of the present disclosure, the hydraulic unit 1 can further comprise the remote storage tank 700, which is connected to the main tank 400 and is equipped to store the pressurized medium.

[0121] The reservoir 700 supplies the pressure medium to the main reservoir 400 via the first connection opening 440 mentioned above.

[0122] The remote container 700 can be positioned at a certain distance from the top of the main container 400.

[0123] The remote container 700 can contain the injection part 710, which is configured to inject the pressure medium, and a second connecting opening (not shown) which is configured to supply the pressure medium injected into the main container 400.

[0124] Within the remote container 700 is a remote container chamber (not shown) in which the pressurized medium is stored. The remote container chamber is a space formed within the remote container 700 when an upper remote body 701 and a lower remote body 702 of the remote container 700 are coupled. Therefore, the remote container chamber can store the pressurized medium that is to be supplied to the main container 400.

[0125] The injection part 710 can be provided on the remote upper body 701, and the second connection opening can be provided on the remote lower body 702. The remote upper body 701 and the remote lower body 702 can be joined together by thermal bonding.

[0126] The injection part 710 is formed on a top surface of the remote upper body 701, and the pressurized medium is introduced through the injection part 210. In this case, a cap can be fitted to the injection part 710 to prevent the pressurized medium from escaping.

[0127] The second connection opening can be integrated into the remote lower body 702. The second connection opening can be connected to the first connection opening 440 by the connecting element 800 described below. In this case, the remote container 700 can be positioned higher than the main container 400, so that the pressurized medium can easily flow into the main container 400.

[0128] One end of the connecting element 800 is connected to the first connecting opening 440 and the other end of the connecting element 800 to the second connecting opening, so that the pressurized medium is transferred from the remote container 700 to the main container 400. The connecting element 800 can be designed as a rubber hose, so that the pressurized medium can be easily transferred even if the installation position of the remote container 700 or the main container 400 is changed.

[0129] To increase the flow resistance of the pressure medium directed to the second connection opening, several guide walls (not shown) can be provided in the remote container 700. The guide walls can extend perpendicularly from the bottom surface of the remote container 700.

[0130] In the hydraulic unit 1 and the associated brake system according to the embodiment described above, the main reservoir 400 has a "C" shape that surrounds the electronic control unit 200, which can meet the various customer requirements during the design processes of the vehicle assembly. Furthermore, the angle of inclination is applied to the main reservoir 400, effectively preventing air from entering the brake system and improving braking performance. In addition, the hydraulic unit 1 and the brake system, which it incorporates according to the present embodiment, can perform various functions and ensure a compact size and volume, which can improve the degree of design freedom and space utilization of the vehicle. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] KR 10-2024-0124688

[0001]

Claims

[1] Hydraulic unit (1) comprising: a main container (400) designed to hold a pressurized medium; a hydraulic block (100) with a reservoir bore (112) configured to communicate with the main reservoir (400), a cylinder bore in which a master cylinder (500) connected to a brake pedal is provided, a motor bore (111) in which a motor (300) is provided, which is configured to generate fluid pressure by being operated by an electrical signal issued in response to movement of the brake pedal, a hydraulic flow path and a valve bore in which a valve is provided, which is configured to control a flow of the pressurized medium through the hydraulic flow path; and an electronic control unit (200) which is set up to control the operation of the motor (300) and the valve based on information about the movement of the brake pedal, wherein the motor bore (111) is provided on a first surface (101) of the hydraulic block (100), wherein a housing (220) of the electronic control unit (200) is provided on a second surface (102) of the hydraulic block (100), which is a surface opposite the first surface (101), the main container (400) comprises: a coupling part (410) provided on a third surface (103) which defines a front side surface between the first surface (101) and the second surface (102); an extension part (430) which is provided in a direction corresponding to a longitudinal direction of the housing (220); and a connecting part (420) which is configured to allow the coupling part (410) and the extension part (430) to communicate with each other and which is designed to surround a front side surface of the housing (220). [2] Hydraulic unit (1) according to claim 1, wherein the coupling part (410) comprises: a first mounting area (411) which is connected to the third surface (103) of the hydraulic block (100); a second mounting area (412) connected to a fourth surface (104) that defines an upper surface between the first surface (101) and the second surface (102) of the hydraulic block (100); and a container area (413) that is provided between the first mounting area (411) and the second mounting area (412). [3] Hydraulic unit (1) according to claim 2, wherein the extension part (430) is provided to be spaced at a predetermined distance from the housing (220). [4] Hydraulic unit (1) according to claim 3, wherein the connecting part (420) is provided to be spaced apart from the front side surface of the housing (220) at a predetermined distance. [5] Hydraulic unit (1) according to any one of claims 1 to 4, wherein the main reservoir (400) is formed by coupling an upper main body (401) and a lower main body (402). [6] Hydraulic unit (1) according to claim 5, further comprising: a remote container (700) designed to store the pressurized medium, wherein the upper main body (401) comprises a first connecting opening (440) which is designed to receive the pressurized medium from the remote container (700). [7] Hydraulic unit (1) according to claim 6, wherein an upper surface of the upper main body (401) comprises a first and a second section (401a, 401b) each being configured to be inclined towards two opposite ends based on the first connecting opening (440). [8] Hydraulic unit (1) according to claim 7, wherein the first section (401a) has a first angle of inclination such that air is discharged from one end of the upper main body (401) to the first connecting opening (440), and wherein the second section (401b) has a second angle of inclination, so that air is expelled from the other end of the upper main body (401) to the first connecting opening (440). [9] Hydraulic unit (1) according to one of claims 6 to 8, wherein the first connecting opening (440) is provided such that it is inclined upwards from a lower surface of the upper main body (401). [10] Hydraulic unit (1) according to any one of claims 5 to 9, wherein the lower main body (402) comprises a plurality of oil connections (411b) which are coupled to the third surface (103) of the hydraulic block (100) and are configured to supply the pressurized medium. [11] Hydraulic unit (1) according to any one of claims 6 to 9, wherein the remote container (700) comprises: an injection part (710) designed to inject the pressurized medium; and a second connecting opening, which is designed to feed the pressurized medium into the main container (400), and wherein the pressurized medium is stored in the remote container (700). [12] Hydraulic unit (1) according to claim 11, further comprising: a connecting element (800) which is configured to connect the first connecting opening (440) and the second connecting opening, so that the pressurized medium in the remote container (700) is transferred into the main container (400). [13] Hydraulic unit (1) according to any one of claims 5 to 12, wherein the main reservoir (400) comprises: a main reservoir chamber designed to store the pressurized medium; and at least one partition wall designed to divide the main container chamber into several chambers. [14] Hydraulic unit (1) according to claim 13, wherein the lower main body (402) comprises a receiving area (450) which is configured to receive a sensing part which is configured to detect a level of the pressure medium received in the main reservoir chamber, and a warning lamp light switch (460) which is provided to issue a warning to a driver on the basis of a signal detected by the sensing part. [15] Hydraulic unit (1) comprising: a master cylinder (500) connected to a brake pedal; a hydraulic block (100) having a plurality of hydraulic flow paths and arranged such that the main cylinder (500) is mounted on the hydraulic block (100); an electronic control unit (200) installed and configured on a side surface of the hydraulic block (100) to control the operation of a motor (300) and a valve mounted on the hydraulic block (100); and a main reservoir (400) which is attached to a front of the hydraulic block (100) and has a “C” shape which is shaped to surround the electronic control unit (200), wherein the main container (400) receives a pressurised medium and comprises a plurality of chambers separated by a plurality of partitions.

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