Hydraulic control device

Abstract

Hydraulic control device (1, 1a, 1b), comprising: a housing (10, 10a, 10b) with an oil inlet (11), a main channel (12), an oil inlet (13) and a pressure control chamber (14), wherein the oil inlet (11) and the oil inlet (13) are connected to the main channel (12) and the pressure control chamber (14) is connected to the main channel (12); a first valve arrangement (20) which is movably arranged in the housing (10, 10a, 10b) to block or open the main channel (12) in order to control a fluid connection relationship between the oil inlet (11) and the oil inlet (13); a second valve arrangement (30) which is movably arranged in the housing (10, 10a, 10b) to control a fluid connection relationship between the main channel (12) and the pressure control chamber (14); and a drive component (40, 40b) which is movably arranged in the housing (10, 10a, 10b) and is designed to drive the first valve arrangement (20) and the second valve arrangement (30) in order to control the fluid connection relationship between the oil inlet (11) and the oil inlet (13) and the fluid connection relationship between the main channel (12) and the pressure control chamber (14), respectively.

Description

Technical application area

[0001] The disclosure relates to a hydraulic control device. background

[0002] To increase safety while cycling, bicycle manufacturers have integrated anti-lock braking systems (ABS) into bicycles. During the operation of the anti-lock braking system, the fluid connection between the oil inlet channel and the oil outlet channel must first be interrupted before a fluid connection between the oil outlet channel and the pressure relief chamber can be established.

[0003] Currently, the valve controlling the fluid connection between the oil inlet and outlet channels, and the valve controlling the fluid connection between the oil outlet channel and the pressure relief chamber, are actuated separately, leading to increased complexity in driving the two valves. Therefore, finding a solution to this problem is one of the topics in this field. SUMMARY

[0004] The disclosure provides a hydraulic control device capable of adjusting the hydraulic pressure through a simplified drive mechanism.

[0005] One embodiment of the disclosure provides a hydraulic control device. The hydraulic control device comprises a housing, a first valve assembly, a second valve assembly, and a drive component. The housing has an oil inlet, a main channel, an oil outlet, and a pressure control chamber. The oil inlet and the oil outlet are connected to the main channel, and the pressure control chamber is also connected to the main channel. The first valve assembly is movably arranged in the housing to block or open the main channel, thereby controlling a fluid connection between the oil inlet and the oil outlet. The second valve assembly is movably arranged in the housing to control a fluid connection between the main channel and the pressure control chamber.The drive component is movably arranged in the housing and is designed to drive the first valve arrangement and the second valve arrangement in order to control the fluid connection relationship between the oil inlet and the oil outlet and the fluid connection relationship between the main channel and the pressure control chamber, respectively.

[0006] According to the hydraulic control device described in the above embodiment, the drive component is movably arranged in the housing to drive the first valve arrangement and the second valve arrangement, respectively, to control the fluid connection relationship between the oil inlet and the oil outlet and the fluid connection relationship between the main channel and the pressure control chamber, thereby simplifying the drive mechanisms of the first valve arrangement and the second valve arrangement, thus reducing the complexity of driving the first valve arrangement and the second valve arrangement. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present disclosure will be better understood with the help of the detailed description below and the accompanying drawings, which serve only for illustration and are therefore not intended to limit the present disclosure. The following applies: Fig. Figure 1 is a cross-sectional view of a hydraulic control device according to a first embodiment of the disclosure; Fig. Figure 2 is a cross-sectional view of the hydraulic control device in Fig. 1, when a drive component is in a locked position; Fig. Figure 3 is a cross-sectional view of the hydraulic control device in Fig. 1, when the drive component is in a pressure regulating position; Fig. Figure 4 is a cross-sectional view of the hydraulic control device in Fig. 1, when the drive component is in a reset position; Fig. Figure 5 is a cross-sectional view of a hydraulic control device according to a second embodiment of the disclosure; Fig. Figure 6 is a cross-sectional view of the hydraulic control device in Fig. 5, when the drive component is in a locked position; Fig. Figure 7 is a cross-sectional view of the hydraulic control device in Fig. 5, when the drive component is in a pressure regulating position; Fig. Figure 8 is a cross-sectional view of the hydraulic control device in Fig. 5, when a one-way valve is open; Fig. Figure 9 is a cross-sectional view of a hydraulic control device according to a third embodiment of the disclosure; Fig. Figure 10 is a cross-sectional view of the hydraulic control device in Fig. 9, when a drive component is in a locked position; and Fig. Figure 11 is a cross-sectional view of the hydraulic control device in Fig. 9, when the drive component is in a pressure regulating position. DETAILED DESCRIPTION

[0008] The following detailed description includes numerous specific details for illustrative purposes, in order to provide a comprehensive understanding of the disclosed embodiments. However, it is obvious that one or more embodiments can also be realized without these specific details. In other cases, known structures and units are represented schematically to simplify the drawing.

[0009] Furthermore, the terms used in this disclosure, such as technical and scientific terms, have their own meanings and can be understood by those skilled in the art, unless the terms are additionally defined in this disclosure. That is to say, the terms used in the following paragraphs should be read in their usual sense in the relevant fields and are not excessively explained unless the terms have a specific meaning in this disclosure.

[0010] Referring to Fig. 1 is Fig. 1 a cross-sectional view of a hydraulic control device according to a first embodiment of the disclosure.

[0011] In this embodiment, the hydraulic control device 1 comprises a housing 10, a first valve arrangement 20, a second valve arrangement 30, and a drive component 40. Furthermore, the hydraulic control device 1 may also include an elastic return component 50, a hydraulic sensor 60, and a return assembly 70.

[0012] The housing 10 comprises an oil inlet 11, a main channel 12, an oil inlet 13, and a pressure regulating chamber 14. The oil inlet 11 is connected, for example, to a brake lever (not shown) of a bicycle by means of a first pipe (not shown), while the oil inlet 13 is connected, for example, to a brake caliper (not shown) of the bicycle by means of a second pipe (not shown). The oil inlet 11 and the oil outlet 13 are connected to two ends of the main channel 12, and the pressure regulating chamber 14 is connected to the main channel 12. Furthermore, the housing 10 may also include a first valve chamber 15, a second valve chamber 16, a receiving chamber 17, and a bypass chamber 18.The first valve chamber 15 is connected to the main channel 12, and a position where the first valve chamber 15 is connected to the main channel 12 is further from the oil inlet 13 than a position where the pressure control chamber 14 is connected to the main channel 12. The second valve chamber 16 is connected to a connection point between the main channel 12 and the pressure control chamber 14. The receiving chamber 17 is connected to one side of the first valve chamber 15 and to one side of the second valve chamber 16 that is further from the main channel 12. The bypass chamber 18 is connected to the main channel 12, and a position where the bypass chamber 18 is connected to the main channel 12 is between the positions where the first valve chamber 15 and the second valve chamber 16 are connected to the main channel 12.

[0013] The first valve assembly 20 is movably arranged in the first valve chamber 15 of the housing 10 to block or open the main channel 12 and thereby control the fluid connection between the oil inlet 11 and the oil inlet 13. For example, the first valve assembly 20 comprises a first valve body 21 and a first elastic component 22. The first elastic component 22 can be a compression spring and abuts the first valve body 21 to cause the first valve body 21 to move in one direction away from the main channel 12.

[0014] The second valve assembly 30 is movably arranged in the second valve chamber 16 of the housing 10 to control the fluid connection between the main channel 12 and the pressure control chamber 14. For example, the second valve assembly 30 comprises a second valve body 31 and a second elastic component 32. The second elastic component 32 can be a compression spring and abuts the second valve body 31 to cause the second valve body 31 to move in a direction away from the connection between the pressure control chamber 14 and the main channel 12.

[0015] The drive component 40 is arranged to be linearly displaceable within the receiving chamber 17 along a longitudinal axis of the receiving chamber 17, and the drive component 40 is driven, for example, by a motor (not shown). The drive component 40 actuates the first valve arrangement 20 and the second valve arrangement 30, respectively, to control the fluid connection between the oil inlet 11 and the oil inlet 13, as well as the fluid connection between the main channel 12 and the pressure control chamber 14, which will be described in detail later. The drive component 40 can, for example, have the form of a rod and can have several grooves 41 and several flanges 42, which are arranged alternately in one direction parallel to a central axis C of the drive component 40.

[0016] In the Fig. In the state shown in Figure 1, when the drive component 40 is in a starting position, one of the grooves 41 of the drive component 40 is aligned with the first valve body 21 of the first valve assembly 20. This allows the first elastic component 22 of the first valve assembly 20 to push the first valve body 21 in the direction of the central axis C of the drive component 40, thereby opening the main channel 12 and enabling a fluid connection between the oil inlet 11 and the oil inlet 13. Meanwhile, one of the flanges 42 of the drive component 40 abuts the second valve assembly 30, causing the second valve body 31 of the second valve assembly 30 to move away from the central axis C of the drive component 40, thus separating the main channel 12 from the pressure control chamber 14.When the brake lever is pressed at this time, hydraulic pressure generated by the brake lever is successively transmitted via the first pipe, the oil inlet 11, the main channel 12, the oil inlet 13 and the second pipe (as indicated by an arrow) to the brake caliper, thereby actuating the brake caliper to brake.

[0017] The elastic return component 50 is, for example, a compression spring. The elastic return component 50 is arranged in the receiving chamber 17 and abuts the drive component 40. The elastic return component 50 is designed such that it causes the drive component 40 to move towards its initial position after being driven away from it. Furthermore, the housing 10 may also have a positioning section 19. The positioning section 19 is an internal flange structure projecting from an inner wall surface of the receiving chamber 17, and the positioning section 19 and the elastic return component 50 are located on opposite sides of the receiving chamber 17.The positioning section 19 of the housing 10 abuts the drive component 40, and the elastic return component 50 and the positioning section 19 together position the drive component 40 in the starting position.

[0018] The hydraulic sensor 60, for example, is a piezoelectric sensor. The hydraulic sensor 60 is arranged in the bypass chamber 18 to measure the pressure of a hydraulic oil in the main channel 12.

[0019] The return assembly 70 is arranged in the pressure control chamber 14 and is designed to push the hydraulic oil in the pressure control chamber 14 towards the main channel 12. The return assembly 70 comprises, for example, a push piston 71 and an actuation component 72. The elastic actuation component 72 can be a compression spring and abuts against the push piston 71 to push the hydraulic oil in the pressure control chamber 14 towards the main channel 12.

[0020] Next, the operating process of the hydraulic control device 1 will be described. Referring to Fig. 2 is Fig. 2 a cross-sectional view of the hydraulic control device in Fig. 1

[0021] During the process of pressing the brake lever to actuate the brake caliper, if the bicycle's control system, based on information received from various sensors (such as wheel speed sensors, vehicle speed sensors, and accelerometers), determines that the wheels are at risk of locking and slipping, the control unit activates the motor to move the drive component 40 from its initial position to a locked position. When the drive component 40 is in the locked position, two of its flanges 42 simultaneously strike the first valve assembly 20 and the second valve assembly 30, respectively. This causes the first valve body 21 of the first valve assembly 20 to move away from the central axis C of the drive component 40, thereby blocking the main channel 12 and separating the oil inlet 11 from the oil inlet 13.Simultaneously, the second valve body 31 of the second valve arrangement 30 is held in a state that separates the main channel 12 from the pressure control chamber 14. In this state, the hydraulic pressure generated by pressing the brake lever is no longer transmitted from the oil inlet 11 via the main channel 12 to the oil inlet 13, so that the hydraulic pressure actuating the brake caliper does not increase further.

[0022] Referring to Fig. 3 is Fig. 3 then a cross-sectional view of the hydraulic control device in Fig. 1, when the drive component is in a pressure regulating position.

[0023] The control unit activates the motor to move the actuator 40 from the locked position to a pressure-regulating position. As the actuator 40 moves from the initial position to the pressure-regulating position, one of the flanges 42 of the actuator 40 remains in contact with the first valve body 21 of the first valve assembly 20, thus holding the first valve body 21 in a state that blocks the main channel 12 and separates the oil inlet 11 from the oil inlet 13. Simultaneously, one of the grooves 41 of the actuator 40 aligns with the second valve body 31 of the second valve assembly 30, causing the second elastic component 32 of the second valve assembly 30 to push the second valve body 31 toward the central axis C of the actuator 40, thereby connecting the main channel 12 to the pressure-regulating chamber 14.In this state, the hydraulic oil can flow from the main channel 12 into the pressure control chamber 14 (as indicated by the arrow) and push the thrust piston 71 of the return assembly 70, thereby reducing the hydraulic pressure transmitted to the brake caliper. This prevents the brake caliper from locking the wheels and causing them to spin.

[0024] If the bicycle's control unit determines, based on information received from various sensors (such as wheel speed sensors, vehicle speed sensors, and accelerometers), that there is no risk of wheel spin, it stops the motor. This allows the elastic return component 50 to cause the drive component 40 to move from the pressure-regulating position back to its initial position. As a result, the hydraulic pressure generated by pressing the brake lever can be transferred from the oil inlet 11, through the main channel 12, to the oil inlet 13, thereby increasing the hydraulic pressure that actuates the brake caliper and amplifying the braking force. If there is again a risk of wheel spin, the control unit activates the motor to move the drive component 40 from its initial position to the pressure-regulating position.This process, in which the drive component repeatedly moves between the starting position and the pressure control position, continues until the brake lever is released and braking is stopped.

[0025] Referring to Fig. 4 is Fig. 4 then a cross-sectional view of the hydraulic control device in Fig. 1, when the drive component is in a reset position.

[0026] After the brake lever is released and braking is complete, the control unit activates the motor to move the drive component 40 into a return position. As the drive component 40 moves from the pressure control position to the return position, two of the grooves 41 of the drive component 40 simultaneously align with the first valve body 21 of the first valve assembly 20 and the second valve body 31 of the second valve assembly 30, respectively. This causes the first elastic component 22 of the first valve assembly 20 to push the first valve body 21 toward the central axis C of the drive component 40, thus opening the main channel 12, and the second elastic component 32 of the second valve assembly 30 to push the second valve body 31 toward the central axis C of the drive component 40, thus connecting the main channel 12 to the pressure control chamber 14.At this point, the elastic actuation component 72 of the return assembly 70 causes the thrust piston 71 to push the hydraulic oil in the pressure control chamber 14 back into the main channel 12 (as indicated by an arrow). Subsequently, the control unit stops the motor, and the elastic return component 50 moves the drive component 40 from the return position back to the initial position.

[0027] In this embodiment, the drive component 40 is movably arranged in the housing 10 to drive the first valve arrangement 20 and the second valve arrangement 30, respectively, to control the fluid connection relationship between the oil inlet 11 and the oil inlet 13 and the fluid connection relationship between the main channel 12 and the pressure control chamber 14, which can simplify the drive mechanisms of the first valve arrangement 20 and the second valve arrangement 30, thereby reducing the complexity of the drive of the first valve arrangement 20 and the second valve arrangement 30.

[0028] Furthermore, by connecting the bypass chamber 18 to the main channel 12 at a position between the positions where the first valve chamber 15 and the second valve chamber 16 are connected to the main channel 12, the hydraulic sensor 60 arranged in the bypass chamber 18 can detect changes in the pressure of the hydraulic oil in the main channel 12 during the opening and closing of the first valve arrangement 20 and the second valve arrangement 30, thereby facilitating the control of the hydraulic regulation.

[0029] It should be noted that the position of the bypass chamber 18 is not limited in the disclosure and can be adapted as required. In one embodiment, the position where the bypass chamber 18 is connected to the main channel 12 can be located between the position where the oil inlet 11 is connected to the main channel 12 and the position where the first valve chamber 15 is connected to the main channel 12.

[0030] Furthermore, the type of hydraulic sensor 60 is not limited to a piezoelectric sensor. In other embodiments, the hydraulic sensor can be of another suitable type, for example, a Hall sensor used in conjunction with a magnetic component. Moreover, the hydraulic sensor 60 is an optional component and can be omitted in other embodiments. Similarly, the bypass chamber 18 can also be omitted.

[0031] It should be noted that the structures of the first valve arrangement 20 and the second valve arrangement 30 are not limited in the disclosure and can be adapted as required.

[0032] It should be noted that the drive component 40 is not limited to being arranged to be linearly displaceable within the housing 10. In other embodiments, the drive component can be rotatably arranged within the housing. In such a configuration, various positions of the drive component along an axial direction can be provided with corresponding grooves and flanges arranged circumferentially along the drive component to drive the first valve arrangement and the second valve arrangement, respectively, to control the fluid connection between the oil inlet and the main channel and the pressure control chamber.

[0033] It should be noted that the housing 10 is not limited to having the first valve chamber 15, the second valve chamber 16 and the receiving chamber 17, and these may be omitted in other embodiments.

[0034] It should be noted that the structure of the return assembly 70 is not limited in the disclosure and can be adapted as required. Furthermore, the return assembly 70 is an optional component and can be omitted in other embodiments, with the hydraulic oil in the pressure control chamber being returned to the main channel by means of other structural configurations.

[0035] Referring to Fig. 5 is Fig. 5 then a cross-sectional view of a hydraulic control device according to a second embodiment of the disclosure.

[0036] The hydraulic control device 1a in this embodiment is similar to the hydraulic control device 1 of the previous embodiment. The differences between them are primarily described below, while similar features are omitted or briefly described and not explained in detail.

[0037] In this embodiment, the hydraulic control device 1a further comprises a one-way valve 80a. A housing 10a further comprises a return channel 191a. The return channel 191a is connected to the pressure control chamber 14 and the main channel 12 of the housing 10a. The one-way valve 80a is movably arranged in the housing 10a to block or open the return channel 191a and thereby control the fluid connection between the pressure control chamber 14 and the main channel 12. For example, the housing 10a may further comprise a third valve chamber 192a, which is connected to the return channel 191a, and the one-way valve 80a is movably arranged in the third valve chamber 192a. The one-way valve 80a may comprise a third valve body 81a and a third elastic component 82a.The third elastic component 82a, for example a compression spring, pushes against the third valve body 81a to cause the third valve body 81a to move in the direction of the return channel 191a.

[0038] In the Fig. In the state shown in Figure 5, when the actuator 40 is in its initial position, the actuator 40 allows the first valve assembly 20 to open the main channel 12, so that the oil inlet 11 is in a fluid connection with the oil inlet 13, and causes the second valve assembly 30 to keep the main channel 12 separated from the pressure control chamber 14. At this point, the third valve body 81a of the one-way valve 80a, under the force of the third elastic component 82a, blocks the return channel 191a, so that the pressure control chamber 14 is not in a fluid connection with the main channel 12. When the brake lever is depressed, the hydraulic pressure generated by the brake lever is transmitted successively through the oil inlet 11, the main channel 12, and the oil inlet 13 to the brake caliper (as indicated by the arrows), thereby actuating the brake caliper to perform braking.When the hydraulic pressure is applied to the third valve body 81a of the one-way valve 80a via the main channel 12 and the return channel 191a, the hydraulic pressure holds the third valve body 81a of the one-way valve 80a in a state in which the main channel 12 is separated from the pressure control chamber 14.

[0039] Then, with reference to Fig. 6, is Fig. 6 a cross-sectional view of the hydraulic control device in Fig. 5, if a drive component is in a locked position.

[0040] During braking, when the brake caliper is actuated by pressing the brake lever, and the bicycle's control unit, based on information received from various sensors (such as wheel speed sensors, vehicle speed sensors, and accelerometers), detects that the wheels are at risk of locking and slipping, the control unit starts the motor to move the drive component 40 from its initial position to a locked position. When the drive component 40 is in the locked position, it causes the first valve assembly 20 to block the main channel 12, thus preventing the oil inlet 11 from being in fluid contact with the oil inlet 13, and holds the second valve assembly 30 in a state that isolates the main channel 12 from the pressure control chamber 14.At this point, the hydraulic pressure generated by pressing the brake lever can no longer be transmitted from the oil inlet 11 via the main channel 12 to the oil inlet 13, so that the hydraulic pressure that actuates the brake caliper does not increase further.

[0041] Referring to Fig. 7 is Fig. 7 then a cross-sectional view of the hydraulic control device in Fig. 5, when the drive component is in a pressure regulating position.

[0042] The control unit activates the motor to move the drive component 40 from the locked position to a pressure-regulating position. When the drive component 40 moves from the initial position to the pressure-regulating position, it holds the first valve assembly 20 in a state that isolates the main channel 12 from the oil inlet 11 and the oil inlet 13, and causes the second valve assembly 30 to open, connecting the main channel 12 to the pressure-regulating chamber 14. At this point, the hydraulic oil can flow from the main channel 12 into the pressure-regulating chamber 14 and push the push piston 71 of the return assembly 70, thus reducing the hydraulic pressure transmitted to the brake caliper. This prevents the brake caliper from locking the wheel and causing wheel spin.

[0043] Referring to Fig. 8, is Fig. 8 then a cross-sectional view of the hydraulic control device in Fig. 5, if a one-way valve is open.

[0044] After the brake lever is released and braking is terminated, the control unit stops the motor, allowing the elastic return component 50 to move the drive component 40 back to its initial position. Since the brake lever has been released, the hydraulic pressure generated by the brake lever disappears and no longer acts on the third valve body 81a of the one-way valve 80a. At this point, the elastic actuation component 72 of the return assembly 70 causes the push piston 71 to push the hydraulic oil in the pressure control chamber 14 toward the third valve body 81a of the one-way valve 80a, so that the third valve body 81a is forced by the hydraulic oil to open the return channel 191a, allowing the pressure control chamber 14 to connect to the main channel 12. In this way, the hydraulic oil in the pressure control chamber 14 can flow back into the main channel 12.

[0045] In this embodiment, by providing the housing 10a with the return channel 191a, which is connected to the pressure control chamber 14 and the main channel 12, and by arranging the movable one-way valve 80a in the housing 10a to block or open the return channel 191a and thereby control the fluid connection relationship between the pressure control chamber 14 and the main channel 12, the reset assembly 70 can automatically push the hydraulic oil in the pressure control chamber 14 after the braking process has ended in order to open the one-way valve 80a, allowing the hydraulic oil to easily flow back into the main channel 12.

[0046] Referring to Fig. 9, is Fig. 9 then a cross-sectional view of a hydraulic control device according to a third embodiment of the disclosure.

[0047] The hydraulic control device 1b of this embodiment is similar to the hydraulic control device 1a of the previous embodiment. The differences between them are mainly described below, and similar features are omitted or briefly described and not explained in detail.

[0048] In this embodiment, a drive component 40b is rotatably arranged in the receiving chamber 17 of a housing 10b. Furthermore, the hydraulic control device 1b can also include a power output device 90b, which may, for example, be a combination of a motor and a gearbox. The power output device 90b is connected to the drive component 40b to drive the rotation of the drive component 40b.

[0049] In this embodiment, the drive component 40b has a first groove 41b and a second groove 42b, which correspond to the first valve arrangement 20 and the second valve arrangement 30, respectively. The first groove 41b and the second groove 42b extend in a circumferential direction of the drive component 40b, and the first groove 41b and the second groove 42b are arranged axially on the drive component 40b and offset from each other.

[0050] Furthermore, the housing 10b has a positioning section 19b, which is an internal flange structure projecting from the inner wall surface of the receiving chamber 17 of the housing 10b. The drive component 40b also includes a positioning recess 43b extending in the circumferential direction of the drive component 40b, and the positioning section 19b of the housing 10b is located in the positioning recess 43b to limit the rotatable angle of the drive component 40b. An elastic return component 50b is arranged outside the housing 10b, with its two opposite ends attached to the housing 10b and the drive component 40b, respectively. The elastic return component 50b is designed such that, after being moved away from the initial position, it drives the drive component 40b back into the initial position, so that the positioning section 19b of the housing 10b abuts against the drive component 40b.Working in combination with the positioning section 19b, the elastic return component 50b positions the drive component 40b in the starting position.

[0051] Next, the drive component 40b is described in the starting position, the locking position and the pressure control position.

[0052] As in Fig. As shown in Figure 9, when the actuator 40b is in its initial position, the first elastic component 22 of the first valve assembly 20 causes the first valve body 21 to move towards a central axis C of the actuator 40b, so that the first valve body 21 is positioned in the first groove 41b of the actuator 40b, thereby opening the main channel 12 and allowing the oil inlet 11 to communicate with the oil inlet 13. Meanwhile, the second valve body 31 of the second valve assembly 30 is not positioned in the second groove 42b of the actuator 40b, so the actuator 40b abuts the second valve assembly 30 and moves the second valve body 31 away from the central axis C of the actuator 40b, thus separating the main channel 12 from the pressure control chamber 14.

[0053] Referring to Fig. 10, is Fig. 10 then a cross-sectional view of the hydraulic control device in Fig. 9, when a drive component is in a locked position. During the process of actuating the brake lever to release the brake caliper, if the bicycle's control unit determines, based on information received from various sensors (such as wheel speed sensors, vehicle speed sensors, and accelerometers), that the wheels are at risk of locking and slipping, the control unit activates the power delivery device 90b to rotate the drive component 40b from its initial position into a locked position. When the drive component 40b is in the locked position, the first valve body 21 of the first valve assembly 20 and the second valve body 31 of the second valve assembly 30 are not in the first groove 41b and the second groove 42b of the drive component 40b, respectively.As a result, the drive component 40b simultaneously strikes both the first valve body 21 and the second valve body 31, causing the first valve body 21 to move away from the central axis C of the drive component 40b. This closes the main channel 12, separating the oil inlet 11 from the oil inlet 13, and holds the second valve body 31 in a position that separates the main channel 12 from the pressure control chamber 14. At this point, the hydraulic pressure generated by pressing the brake lever can no longer pass from the oil inlet 11 through the main channel 12 to the oil inlet 13, so the hydraulic pressure actuating the brake caliper no longer increases.

[0054] Referring to Fig. 11 is Fig. 11 then a cross-sectional view of the hydraulic control device in Fig. 9, when the drive component is in a pressure control position.

[0055] When the actuator 40b is rotated into the pressure regulating position, it remains in contact with the first valve body 21 of the first valve assembly 20, so that the first valve body 21 continues to close the main channel 12 and separate the oil inlet 11 from the oil inlet 13. Simultaneously, the second groove 42b of the actuator 40b aligns with the second valve body 31 of the second valve assembly 30, causing the second elastic component 32 of the second valve assembly 30 to push the second valve body 31 towards the central axis C of the actuator 40b. This positions the second valve body 31 in the second groove 42b, thereby connecting the main channel 12 to the pressure regulating chamber 14.At this point, hydraulic oil can flow from the main channel 12 into the pressure control chamber 14 (as indicated by an arrow) and push the thrust piston 71 of the return assembly 70, thereby reducing the hydraulic pressure delivered to the brake caliper. This prevents the brake caliper from locking the wheel and causing it to spin.

[0056] After the brake lever is released and braking is stopped, the control unit stops the operation of the power output device 90b, allowing the elastic return component 50b to return the drive component 40b to its initial position. The process by which the hydraulic oil flows back into the main channel 12 in the pressure control chamber 14 is the same as in the previous embodiment and is therefore not repeated here.

[0057] It should be noted that during the movement of the drive component, the drive component actuates only one of the first valve arrangements and the second valve arrangement at any given time, but the disclosure is not limited thereto. In other embodiments, the drive component can actuate both the first valve arrangement and the second valve arrangement simultaneously. For example, at a certain point during its movement, the drive component can actuate both the first and second valve arrangements simultaneously to establish a fluid connection between the oil inlet and outlet while the main channel is disconnected from the pressure control chamber, or to disconnect the oil inlet from the oil outlet while connecting the main channel to the pressure control chamber.

[0058] According to the hydraulic control devices described in the above embodiments, the drive component is movably arranged in the housing to drive the first valve arrangement and the second valve arrangement, respectively, to control the fluid connection relationship between the oil inlet and the oil outlet and the fluid connection relationship between the main channel and the pressure control chamber, which can simplify the drive mechanisms of the first valve arrangement and the second valve arrangement, thereby reducing the complexity of driving the first valve arrangement and the second valve arrangement.

[0059] Furthermore, by connecting the bypass chamber to the main channel at a position between the positions where the first valve chamber and the second valve chamber are connected to the main channel, the hydraulic sensor located in the bypass chamber can detect changes in the pressure of the hydraulic oil in the main channel during the opening and closing of the first valve assembly and the second valve assembly, thus facilitating the control of the hydraulic regulation.

[0060] By providing the housing with the return channel connected to the pressure control chamber and the main channel, and by arranging the movable one-way valve in the housing to block or open the return channel and thereby control the fluid connection relationship between the pressure control chamber and the main channel, the reset assembly can automatically push the hydraulic oil in the pressure control chamber after the braking process has ended in order to open the one-way valve, thus allowing the hydraulic oil to easily flow back into the main channel.

[0061] Those skilled in the art will recognize that various modifications and variations can be made to the present disclosure. The description and examples are to be regarded only as exemplary embodiments, the scope of which is indicated by the following claims and their equivalents.

Claims

[1] Hydraulic control device (1, 1a, 1b), comprising: a housing (10, 10a, 10b) with an oil inlet (11), a main channel (12), an oil inlet (13) and a pressure control chamber (14), wherein the oil inlet (11) and the oil inlet (13) are connected to the main channel (12) and the pressure control chamber (14) is connected to the main channel (12); a first valve arrangement (20) which is movably arranged in the housing (10, 10a, 10b) to block or open the main channel (12) in order to control a fluid connection relationship between the oil inlet (11) and the oil inlet (13); a second valve arrangement (30) which is movably arranged in the housing (10, 10a, 10b) to control a fluid connection relationship between the main channel (12) and the pressure control chamber (14); and a drive component (40, 40b) which is movably arranged in the housing (10, 10a, 10b) and is designed to drive the first valve arrangement (20) and the second valve arrangement (30) in order to control the fluid connection relationship between the oil inlet (11) and the oil inlet (13) and the fluid connection relationship between the main channel (12) and the pressure control chamber (14), respectively. [2] Hydraulic control device (1, 1a, 1b) according to claim 1, further comprising an elastic return component (50a, 50b), wherein the housing (10, 10a, 10b) has a positioning section (19, 19b), wherein the elastic return component (50a, 50b) is configured such that it causes the drive component (40, 40b) to move towards an initial position, wherein the positioning section of the housing (10, 10a, 10b) abuts the drive component (40, 40b) and the elastic return component (50a, 50b) and the positioning section (19, 19b) together position the drive component (40, 40b) in the initial position. [3] Hydraulic control device (1, 1a, 1b) according to claim 1, wherein the drive component (40, 40b) is movably arranged in the housing (10, 10a, 10b) and simultaneously drives the first valve arrangement (20) and the second valve arrangement (30) to control the fluid connection relationship between the oil inlet (11) and the oil inlet (13) and the fluid connection relationship between the main channel (12) and the pressure control chamber (14), respectively. [4] Hydraulic control device (1b) according to claim 1, wherein the drive component (40b) is rotatably arranged in the housing (10b). [5] Hydraulic control device (1b) according to claim 4, wherein the drive component (40b) has a first groove (41b) and a second groove (42b) extending along a circumferential direction of the drive component (40b) and corresponding to the first valve arrangement (20) and the second valve arrangement (30), respectively, wherein the first valve arrangement (20) is movably arranged inside or outside the first groove (41b) and the second valve arrangement (30) is movably arranged inside or outside the second groove (42b). [6] Hydraulic control device (1, 1a) according to claim 1, wherein the drive component (40) is arranged to be linearly displaceable in the housing (10). [7] Hydraulic control device (1, 1a) according to claim 6, wherein the drive component (40) is a rod and has multiple slots (41) and multiple flanges (42), wherein the multiple slots (41) and the multiple flanges (42) are arranged alternately in one direction parallel to a central axis (C) of the drive component (40). [8] Hydraulic control device (1, 1a) according to claim 7, wherein, when the drive component (40) is in a starting position, one of the multiple grooves (41) of the drive component (40) is aligned with the first valve arrangement (20), so that the first valve arrangement (20) moves in the direction of the central axis (C) of the drive component (40) to open the main channel (12) and thereby establish a fluid connection between the oil inlet (11) and the oil inlet (13), and one of the multiple flanges (42) of the drive component (40) abuts the second valve arrangement (30), so that the second valve arrangement (30) moves away from the central axis (C) of the drive component (40) to separate the main channel (12) from the pressure control chamber (14);When the drive component (40) moves from the initial position to a pressure regulating position, one of the multiple flanges (42) of the drive component (40) abuts the first valve assembly (20), causing the first valve assembly (20) to move away from the central axis (C) of the drive component (40) to close the main channel (12) and thereby separate the oil inlet (11) from the oil inlet (12), and one of the multiple grooves (41) of the drive component (40) is aligned with the second valve assembly (30), causing the second valve assembly (30) to move in the direction of the central axis (C) of the drive component (40) to establish a fluid connection between the main channel (12) and the pressure regulating chamber (14). [9] Hydraulic control device (1, 1a) according to claim 7, wherein the first valve arrangement (20) comprises a first valve body (21) and a first elastic component (22), wherein the first elastic component (22) abuts the first valve body (21) to cause the first valve body (21) to move away from the main channel (12), the second valve arrangement (30) comprises a second valve body (31) and a second elastic component (32), wherein the second elastic component (32) abuts the second valve body (31) to cause the second valve body (31) to move away from a connection point between the pressure control chamber (14) and the main channel (12). [10] Hydraulic control device (1, 1a) according to claim 8, further comprising a reset assembly (70), wherein the reset assembly (70) is arranged in the pressure control chamber (14) and is configured to push hydraulic oil in the pressure control chamber (14) in the direction of the main channel (12). [11] Hydraulic control device (1, 1a) according to claim 10, wherein when the drive component (40) moves from the pressure control position to a reset position, two of the multiple grooves (41) of the drive component (40) are aligned with the first valve arrangement (20) and the second valve arrangement (30), respectively, such that the first valve arrangement (20) moves in the direction of the central axis (C) of the drive component (40) to open the main channel (12), and the second valve arrangement (30) moves in the direction of the central axis (C) of the drive component (40) to establish a fluid connection relationship between the main channel (12) and the pressure control chamber (14). [12] Hydraulic control device (1, 1a) according to claim 10, wherein the return assembly (70) comprises a push piston (71) and an elastic actuation component (72), wherein the elastic actuation component (72) abuts the push piston (71) to cause the push piston (71) to push the hydraulic oil in the pressure control chamber (14) in the direction of the main channel (12). [13] Hydraulic control device (1a) according to claim 10, further comprising a one-way valve (80a), wherein the housing (10a) further comprises a return channel (191a), the return channel (191a) being connected to the pressure control chamber (14) and the main channel (12), the one-way valve (80a) being movably arranged in the housing (10a) to block or open the return channel (191a) in order to control a fluid connection relationship between the pressure control chamber (14) and the main channel (12). [14] Hydraulic control device (1, 1a, 1b) according to claim 1, further comprising a hydraulic sensor (60), wherein the housing (10, 10a, 10b) further comprises a bypass chamber (18), the bypass chamber (18) is connected to the main channel (12) and the hydraulic sensor (60) is arranged in the bypass chamber (18). [15] Hydraulic control device (1, 1a, 1b) according to claim 14, wherein the housing (10, 10a, 10b) further comprises a first valve chamber (15) and a second valve chamber (16), wherein the first valve chamber (15) is connected to the main channel (12) at a position that is further away from the oil inlet (13) than a position at which the pressure control chamber (14) is connected to the main channel (12), and the first valve assembly (20) is movably arranged in the first valve chamber (15), the second valve chamber (16) is connected to a connection point between the main channel (12) and the pressure control chamber (14), and the second valve assembly (30) is movably arranged in the second valve chamber (16), the bypass chamber (18) is connected to the main channel (12) at a position between the positions where the first valve chamber (20) and the second valve chamber (30) are connected to the main channel (12).

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