Apparatus and method for driving braking and parking braking assistance

Abstract

The present invention relates to a driving braking and parking braking support device, comprising: a pedal unit to which a driver's pedaling force for vehicle braking is applied; a reservoir for storing brake oil for generating hydraulic pressure; a hydraulic pressure generating unit that generates hydraulic pressure corresponding to the pedaling force of the pedal unit using the oil stored in the reservoir; a first valve driving unit that applies hydraulic pressure generated by the hydraulic pressure generating unit to a caliper unit for vehicle braking and additionally receives hydraulic pressure generated by a ride height adjustment actuator unit and applies it to the caliper unit; a second valve driving unit that applies hydraulic pressure generated by the ride height adjustment actuator unit to the first valve driving unit; and a control unit that controls the hydraulic pressure generating unit and the first and second valve driving units, and controls a control valve included in a hydraulic line formed between the reservoir and the first valve driving unit, the pedal unit and the first valve driving unit, the first valve driving unit and the second valve driving unit, and the first valve driving unit and the caliper unit, depending on the vehicle's ride height adjustment or braking situation.

Description

Technology Field

[0001] The present invention relates to a driving braking and parking braking support device and method, and more specifically, to a driving braking and parking braking support device and method that can support driving braking and parking braking by performing a kind of redundancy braking by supplying hydraulic pressure of a garage control system to a braking system when a designated situation occurs. Background Technology

[0002] Generally, a vehicle's suspension system mitigates shocks or vibrations received from the road surface while driving, improving ride comfort and vehicle stability.

[0003] Meanwhile, for high-speed driving, it is desirable for the vehicle body to be in close contact with the ground, but in the case of vehicles driving over speed bumps or on unpaved roads, if the vehicle body is low, it may collide with the speed bump or road structure and cause damage.

[0004] To prevent such concerns, suspension systems including a ride height adjustment system capable of automatically adjusting the vehicle's ride height while driving are being developed recently.

[0005] Furthermore, with the recent increase in the development of electric and autonomous vehicles, braking stability is becoming a more critical issue, and redundancy braking systems (e.g., braking systems additionally equipped with a braking hydraulic generating device (e.g., a pump)) are being considered to improve braking stability (e.g., driving braking, parking braking).

[0006] However, implementing a redundancy braking system requires the additional provision of a braking hydraulic generating device (e.g., a pump), which leads to the problem of increasing the manufacturing cost of the vehicle.

[0007] Therefore, there is a need for technology to improve braking stability by implementing a redundancy braking system while suppressing the increase in vehicle manufacturing costs.

[0008] The background technology of the present invention is disclosed in Korean Registered Patent No. 10-2179663 (Registered on November 11, 2020, garage adjustment device and method). The problem to be solved

[0009] According to one aspect of the present invention, the present invention is created to solve the above-mentioned problems and aims to provide a driving braking and parking braking support device and method that can support driving braking and parking braking by performing a kind of redundancy braking by supplying hydraulic pressure of a garage control system to a braking system when a designated situation occurs. means of solving the problem

[0010] A driving braking and parking braking support device according to one aspect of the present invention comprises: a pedal portion to which a driver’s pedal force for vehicle braking is applied; a reservoir for storing brake oil for generating hydraulic pressure; a hydraulic pressure generating portion that generates hydraulic pressure corresponding to the pedal force of the pedal portion using the oil stored in the reservoir; a first valve driving portion that applies hydraulic pressure generated by the hydraulic pressure generating portion to a caliper portion for vehicle braking and additionally receives hydraulic pressure generated by a ride height adjustment actuator portion and applies it to the caliper portion; a second valve driving portion that applies hydraulic pressure generated by the ride height adjustment actuator portion to the first valve driving portion; and a control portion that controls the hydraulic pressure generating portion and the first and second valve driving portions, and controls a control valve included in a hydraulic line formed between the reservoir and the first valve driving portion, the pedal portion and the first valve driving portion, the first valve driving portion and the second valve driving portion, and the first valve driving portion and the caliper portion, depending on the vehicle ride height adjustment or braking situation.

[0011] In the present invention, the second valve driving unit is characterized by including an intermittent valve and a proportional valve.

[0012] In the present invention, the second valve driving unit is characterized by having a plurality of fluid passages branched from the first valve driving unit to transmit hydraulic pressure to the front wheel side and rear wheel side ride height adjustment actuator units, and a valve formed in each of the plurality of fluid passages branched from the first valve driving unit, and the control unit opens the valves formed in each of the plurality of fluid passages when raising / lowering the ride height and when parking, and closes them when maintaining the ride height and braking.

[0013] In the present invention, the control unit separately controls each valve in consideration of cases where the difference in front / rear weight distribution of the vehicle is large, and is characterized by controlling the hydraulic pressure application or hydraulic pressure return speed through proportional control to prevent the vehicle from descending too quickly due to the vehicle weight when lowering the vehicle height.

[0014] In the present invention, the second valve driving unit is characterized by being implemented in a form including a latch-type solenoid valve.

[0015] In the present invention, the vehicle height adjustment actuator is characterized by generating hydraulic pressure pressurized by a sprung mass generated according to the vehicle height.

[0016] The present invention is characterized by further including a height adjustment hydraulic power generation unit for adjusting the height by separately generating hydraulic power for height adjustment and applying it to the height adjustment actuator unit.

[0017] In the present invention, the garage height adjustment hydraulic power generator is characterized by applying hydraulic power to the garage height adjustment actuator unit or transmitting hydraulic power to the first valve drive unit through the second valve drive unit according to the control of the control unit.

[0018] In the present invention, the control valve (①) of the return hydraulic line formed between the reservoir and the first valve drive unit is a Normal Close valve to prevent power consumption when the engine is off, and the control unit is characterized by controlling the control valve (①) of the return hydraulic line to open when the vehicle height is lowered and the brake is released, and to close when the vehicle height is raised, the vehicle is braked, and the engine is off.

[0019] In the present invention, the control valve (②) of the caliper hydraulic line formed between the first valve driving unit and the caliper unit is a Normal Open valve, and the control unit is characterized by maintaining a closed state by applying current during vehicle height increase or vehicle height decrease.

[0020] In the present invention, the control valve (③) of the hydraulic line of the garage control actuator formed between the first valve driving unit and the second valve driving unit is characterized by being a normally open valve capable of low-power driving to maintain a closed state when maintaining the garage and to maintain the open state to transmit parking pressure when parking, or by being a latch-type solenoid valve that does not use current when maintaining the state.

[0021] In the present invention, the control valve (④) of the pedal unit hydraulic line formed between the pedal unit and the first valve driving unit is a normally closed valve, and an open control is performed in a designated situation according to the control of the control unit, and a relief valve is connected in parallel to the control valve (④) to prepare for the control valve (④) not operating due to a system failure.

[0022] In the present invention, the control unit is characterized by closing the control valve (①) of the return hydraulic line formed between the reservoir and the first valve driving unit when the vehicle height is raised, pumping the hydraulic generation unit to generate hydraulic pressure, closing the control valve (②) of the caliper hydraulic line formed between the first valve driving unit and the caliper unit, and opening the control valve (③) of the vehicle height adjustment actuator hydraulic line formed between the first valve driving unit and the second valve driving unit.

[0023] In the present invention, the control unit is characterized by opening the control valve (①) of the return hydraulic line formed between the reservoir and the first valve drive unit when the vehicle height is lowered, closing the control valve (②) of the caliper hydraulic line formed between the first valve drive unit and the caliper unit, and opening the control valve (③) of the vehicle height adjustment actuator hydraulic line formed between the first valve drive unit and the second valve drive unit.

[0024] In the present invention, the control unit is characterized by closing the control valve (①) of the return hydraulic line formed between the reservoir and the first valve drive unit when the garage is maintained, opening the control valve (②) of the caliper hydraulic line formed between the first valve drive unit and the caliper unit, and closing the control valve (③) of the garage control actuator hydraulic line formed between the first valve drive unit and the second valve drive unit.

[0025] In the present invention, the control unit is characterized by closing the control valve (①) of the return hydraulic line formed between the reservoir and the first valve drive unit when the vehicle is in a braking situation, pumping the hydraulic power generation unit to generate hydraulic power, opening the control valve (②) of the caliper hydraulic line formed between the first valve drive unit and the caliper unit, and closing the control valve (③) of the ride height adjustment actuator hydraulic line formed between the first valve drive unit and the second valve drive unit.

[0026] In the present invention, the control unit is characterized by closing the control valve (①) of the return hydraulic line formed between the reservoir and the first valve drive unit when the hydraulic generator does not operate and thus no braking hydraulic pressure is generated, opening the control valve (②) of the caliper hydraulic line formed between the first valve drive unit and the caliper unit, and opening the control valve (③) of the ride height adjustment actuator hydraulic line formed between the first valve drive unit and the second valve drive unit.

[0027] A driving braking and parking braking support method according to another aspect of the present invention comprises: a step in which a control unit of a driving braking and parking braking support device performs control of a hydraulic power generation unit and a first and second valve driving unit according to a vehicle height adjustment or braking situation; and a step of controlling a control valve included in a hydraulic line formed between a reservoir and a first valve driving unit, a pedal unit and a first valve driving unit, a first valve driving unit and a second valve driving unit, and a first valve driving unit and a caliper unit; wherein the first valve driving unit applies hydraulic power generated by the hydraulic power generation unit to the caliper unit for vehicle braking and additionally receives hydraulic power generated by a height adjustment actuator unit and applies it to the caliper unit, and the second valve driving unit applies hydraulic power generated by the height adjustment actuator unit to the first valve driving unit.

[0028] In the present invention, when the vehicle is in a height increase state, the control unit closes the control valve (①) of the return hydraulic line formed between the reservoir and the first valve drive unit, pumps the hydraulic power generation unit to generate hydraulic power, closes the control valve (②) of the caliper hydraulic line formed between the first valve drive unit and the caliper unit, and opens the control valve (③) of the height adjustment actuator hydraulic line formed between the first valve drive unit and the second valve drive unit.

[0029] In the present invention, when the vehicle is in a lowering state, the control unit opens the control valve (①) of the return hydraulic line formed between the reservoir and the first valve drive unit, closes the control valve (②) of the caliper hydraulic line formed between the first valve drive unit and the caliper unit, and opens the control valve (③) of the vehicle height adjustment actuator hydraulic line formed between the first valve drive unit and the second valve drive unit.

[0030] In the present invention, when the vehicle is in a garage maintenance state, the control unit closes the control valve (①) of the return hydraulic line formed between the reservoir and the first valve drive unit, opens the control valve (②) of the caliper hydraulic line formed between the first valve drive unit and the caliper unit, and closes the control valve (③) of the garage control actuator hydraulic line formed between the first valve drive unit and the second valve drive unit.

[0031] In the present invention, when the vehicle is in a braking situation, the control unit closes the control valve (①) of the return hydraulic line formed between the reservoir and the first valve drive unit, pumps the hydraulic power generator to generate hydraulic power, opens the control valve (②) of the caliper hydraulic line formed between the first valve drive unit and the caliper unit, and closes the control valve (③) of the ride height adjustment actuator hydraulic line formed between the first valve drive unit and the second valve drive unit.

[0032] In the present invention, when the hydraulic generating unit of the vehicle does not operate and thus does not generate braking hydraulic pressure, in an emergency braking situation or a parking braking situation, the control unit closes the control valve (①) of the return hydraulic line formed between the reservoir and the first valve driving unit, opens the control valve (②) of the caliper hydraulic line formed between the first valve driving unit and the caliper unit, and opens the control valve (③) of the ride height adjustment actuator hydraulic line formed between the first valve driving unit and the second valve driving unit. Effects of the invention

[0033] According to one aspect of the present invention, the present invention supports driving braking and parking braking by supplying hydraulic pressure from a garage control system to a braking system to perform a type of redundancy braking when a designated situation occurs, thereby improving braking stability by implementing a redundancy braking system while suppressing the increase in the manufacturing cost of the vehicle. Brief explanation of the drawing

[0034] FIG. 1 is an exemplary diagram showing the schematic configuration of a driving braking and parking braking support device according to one embodiment of the present invention. FIG. 2 is an exemplary diagram showing the schematic configuration of a driving braking and parking braking support device according to another embodiment of the present invention. FIG. 3 is an example diagram for explaining the principle of generating hydraulic pressure by a sprung mass in the garage control actuator part in FIG. 1. FIG. 4 is a table for explaining the operating state of a hydraulic line control valve according to the situation in FIG. 1. FIG. 5 is an example diagram showing oil flow to explain the operating state of a hydraulic line control valve according to the situation in FIG. 1. FIG. 6 is an example diagram illustrating the spherical shape of the hydraulic line between the first valve actuator and the second valve actuator in FIG. 1. FIG. 7 is an example diagram shown to explain the configuration of the second valve driving unit in FIG. 1. Specific details for implementing the invention

[0035] Hereinafter, an embodiment of a driving braking and parking braking support device and method according to the present invention will be described with reference to the attached drawings.

[0036] In this process, the thickness of lines or the size of components depicted in the drawings may be exaggerated for the sake of clarity and convenience of explanation. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intent or convention of the user or operator. Therefore, the definitions of these terms should be based on the content throughout this specification.

[0037] FIG. 1 is an exemplary diagram showing a schematic configuration of a driving braking and parking braking support device according to one embodiment of the present invention, and FIG. 2 is an exemplary diagram showing a schematic configuration of a driving braking and parking braking support device according to another embodiment of the present invention.

[0038] As illustrated in FIG. 1, the driving braking and parking braking support device according to the present embodiment includes a pedal unit (110), a reservoir (120), a hydraulic power generation unit (130), a first valve driving unit (140), a caliper unit (150), a second valve driving unit (160), and a ride height adjustment actuator unit (170).

[0039] The above pedal part (110) is a brake pedal, and the driver's pedal force for braking is applied.

[0040] The above reservoir (120) stores brake oil for hydraulic generation.

[0041] The hydraulic generating unit (130) generates hydraulic pressure corresponding to the pedal force of the pedal unit (110) using brake oil stored in the reservoir (120).

[0042] The first valve driving unit (140) applies hydraulic pressure generated in the hydraulic pressure generating unit (130) to the caliper unit (150) (including calipers for each wheel) to perform vehicle braking.

[0043] In addition, in this embodiment, the first valve driving unit (140) can additionally receive hydraulic pressure generated from the height adjustment actuator unit (170) through the second valve driving unit (160) and apply it to the caliper unit (150) to perform vehicle braking.

[0044] The second valve driving unit (160) includes an intermittent valve (161) and a proportional valve (162) (see FIG. 7).

[0045] FIG. 7 is an example diagram shown to explain the configuration of the second valve drive unit in FIG. 1. As shown in FIG. 7 (a), the first valve drive unit (140) branches off to transmit hydraulic pressure to the height adjustment actuator unit (170) (i.e., four height adjustment actuators), and a valve is located in each path so that it opens when the height is raised / lowered and parked, and closes when the height is maintained and braking. At this time, the weight distribution of the vehicle does not differ significantly between the left and right sides, but the difference between the front and rear can be significant, so each valve is controlled separately. In particular, when lowering the height, the vehicle may descend too quickly due to its weight, so the speed is controlled through proportional control.

[0046] In addition, as shown in Fig. 7(b), the second valve driving unit (160) may be configured in the form of a latch-type solenoid + spool valve, the spool valve performs the role of Open / Close, the lower proportional control valve is used for speed control in the Normal Open type, closes to ensure smooth braking operation in the event of a failure of the latch-type solenoid, and can also be configured to open / close with a latch-type solenoid unit (without spool), and can be configured to open / close each port.

[0047] Here, the above latch-type solenoid has the advantage that although it requires current for position change (open / close), it does not require separate current to maintain the state once the position has been changed.

[0048] That is, the second valve driving unit (160) controls the intermittent valve (161) and the proportional valve (162) to transmit or block the hydraulic pressure generated in the garage control actuator unit (170) to the first valve driving unit (140).

[0049] The above-mentioned ride height adjustment actuator unit (170) (including a ride height adjustment actuator for each wheel) generates hydraulic pressure pressurized by a sprung mass generated according to the ride height (height) of the vehicle (see FIG. 3).

[0050] For example, as shown in Fig. 3, when the garage height is high (see Fig. 3 (b)), hydraulic pressure is generated by the sprung mass, and if a minor leak occurs, the same pressure is maintained even if the garage height is lowered (see Fig. 3 (a)).

[0051] Meanwhile, referring to FIG. 2, the garage adjustment hydraulic generating unit (180) in FIG. 1 is further included.

[0052] The above-mentioned garage height adjustment hydraulic generator (180) adjusts the garage height by generating hydraulic pressure and applying it to the above-mentioned garage height adjustment actuator (170).

[0053] In addition, in this embodiment, the garage control hydraulic generator (180) can generate hydraulic pressure and apply it directly to the second valve drive unit (160). Accordingly, the second valve drive unit (160) can transmit the hydraulic pressure generated by the garage control hydraulic generator (180) to the first valve drive unit (140).

[0054] In other words, the second valve drive unit (160) controls the intermittent valve (161) and the proportional valve (162) to selectively transmit or block hydraulic pressure generated in the garage control actuator unit (170) (e.g., hydraulic pressure generated by pressurizing Sprung Mass) to the first valve drive unit (140) as needed, and also selectively transmit or block hydraulic pressure generated in the garage control hydraulic pressure generator (180) to the first valve drive unit (140) as needed.

[0055] The above control unit (210) controls the hydraulic generator (130), the first and second valve driving units (140, 160), and the vehicle height adjustment hydraulic generator (180) according to the vehicle height adjustment or braking situation, and also controls the control valves (①, ②, ③, ④) included in each hydraulic line.

[0056] For reference, the drawing symbols (①, ②, ③, ④) shown in Figure 1 above represent control valves included in the corresponding hydraulic lines.

[0057] For example, the control valve (①) of the above return hydraulic line is a Normal Close valve because there should be no power consumption when the engine is off, and it is controlled to be open when lowering the vehicle height and releasing the brake, and closed when raising the vehicle height, braking, and turning off the engine.

[0058] In addition, the control valve (②) of the above caliper hydraulic line is a Normal Open valve, and this control valve is maintained in a closed state when current is applied during the rise or fall of the vehicle height.

[0059] In addition, the control valve (③) of the hydraulic line of the above-mentioned garage height control actuator is always kept in a closed state when maintaining the garage height, and must be kept in an open state to transmit parking pressure when parking. Therefore, a normal open valve capable of low-power driving is applied, or a latch-type solenoid valve that does not use current when maintaining is applied. In particular, a spring of the solenoid valve is appropriately set or a spool valve is applied so that high pressure is alternately formed in / out around the valve and does not automatically open due to pressure.

[0060] In addition, the control valve (④) of the hydraulic line of the pedal section is a valve that uses a normal open valve to transmit pedal pressure to the caliper in case of emergency to perform emergency braking, and close control is performed by applying current during normal braking or ride height adjustment. However, in this embodiment, to enable a type of redundancy braking, hydraulic pressure generated in the ride height adjustment actuator is applied to the braking system, and in this embodiment, it is configured as a normal close valve and performs open control when necessary. However, in preparation for the control valve (④) not operating due to a system failure, a relief valve (not shown) is connected in parallel to the normal close type control valve (④), so that when the pedal operating pressure increases in case of an emergency, the relief valve (not shown) opens, allowing the caliper to brake.

[0061] FIG. 4 is a table for explaining the operating state of the hydraulic line control valve according to the situation in FIG. 1, and FIG. 5 is an example diagram showing the oil flow for explaining the operating state of the hydraulic line control valve according to the situation in FIG. 1. The operation of the hydraulic line control valve according to the situation will be explained below with reference to FIG. 4 and FIG. 5.

[0062] Referring to FIGS. 4 and 5, first, in the case of a vehicle height increase situation, the control unit (210) closes the control valve (①) of the return hydraulic line and pumps the hydraulic generator (130) to generate hydraulic pressure, closes the control valve (②) of the caliper hydraulic line, and opens the control valve (③) of the vehicle height adjustment actuator hydraulic line, thereby applying the generated hydraulic pressure to the vehicle height adjustment actuator unit (170) to raise the vehicle height.

[0063] For reference, the second valve drive unit (160) and the ride height adjustment actuator unit (170) can internally separate the hydraulic lines of the front and rear wheels by means of a control valve to independently control the hydraulic pressure of the front and rear wheels. Additionally, the hydraulic lines from the first valve drive unit (140) to the second valve drive unit (160) may be connected as a single hydraulic line (see FIG. 6 (a)), or the hydraulic lines of the front and rear wheels may be separated and connected from the first valve drive unit (140) to the second valve drive unit (160) (see FIG. 6 (b)).

[0064] Next, in the case of a vehicle height lowering situation, the control unit (210) opens the control valve (①) of the return hydraulic line, closes the control valve (②) of the caliper hydraulic line, and opens the control valve (③) of the vehicle height control actuator hydraulic line, thereby allowing the hydraulic pressure of the vehicle height control actuator unit (170) to flow to the reservoir (120) and lower the vehicle height.

[0065] Next, in the case of maintaining the garage height, the control unit (210) closes the control valve (①) of the return hydraulic line, opens the control valve (②) of the caliper hydraulic line, and closes the control valve (③) of the garage height control actuator line, thereby maintaining the hydraulic pressure of the garage height control actuator unit (170) and maintaining the garage height.

[0066] Next, in the case of a vehicle braking situation, the control unit (210) closes the control valve (①) of the return hydraulic line and pumps the hydraulic generator (130) to generate hydraulic pressure, opens the control valve (②) of the caliper hydraulic line, and closes the control valve (③) of the ride height adjustment actuator hydraulic line, thereby applying the generated hydraulic pressure to the caliper unit (150) to brake the vehicle.

[0067] Next, in the case of an emergency braking situation (i.e., a situation where the hydraulic generator does not operate and braking hydraulic pressure is not generated) and a parking braking situation, the control unit (210) closes the control valve (①) of the return hydraulic line, opens the control valve (②) of the caliper hydraulic line, and also opens the control valve (③) of the ride height adjustment actuator hydraulic line, thereby allowing the hydraulic pressure of the ride height adjustment actuator unit (170) (i.e., hydraulic pressure pressurized by the sprung mass) to flow toward the caliper unit (150) and brake the vehicle's ride height.

[0068] Meanwhile, as shown in FIG. 2, if the garage height adjustment hydraulic generator (180) is further included, the hydraulic pressure generated by the garage height adjustment hydraulic generator (180) can be additionally used in the garage height raising situation, garage height lowering situation, emergency braking situation, and parking braking situation.

[0069] For example, in the event of a garage height increase or garage height decrease, the control unit (210) applies hydraulic pressure generated by the garage height control hydraulic power generation unit (180) to the garage height control actuator unit through the second valve driving unit, applies it directly to the garage height control actuator unit (170), or returns it from the garage height control actuator unit (170).

[0070] In addition, during emergency braking and parking braking, the control unit (210) can apply hydraulic pressure generated by the garage adjustment hydraulic power generation unit (180) to the caliper unit (150) through the second valve driving unit (160) and the first valve driving unit (140).

[0071] At this time, although not specifically illustrated in the drawing, a control valve (not shown) may be included in the hydraulic line between the height adjustment hydraulic generator (180) and the height adjustment actuator (170), and in the hydraulic line between the height adjustment hydraulic generator (180) and the second valve driving unit (160). Additionally, a separate reservoir (not shown) may be included, or an existing reservoir (120) may be used.

[0072] As described above, this embodiment supports driving braking and parking braking by performing a type of redundancy braking by supplying hydraulic pressure from the garage control system to the braking system when a designated situation occurs, thereby having the effect of improving braking stability by implementing a redundancy braking system while suppressing the increase in the manufacturing cost of the vehicle.

[0073] Although the present invention has been described above with reference to the embodiments illustrated in the drawings, this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the technical scope of protection of the present invention should be determined by the claims below. Furthermore, the implementations described herein may be implemented, for example, as methods or processes, devices, software programs, data streams, or signals. Even if discussed only in the context of a single form of implementation (e.g., discussed only as a method), the implementation of the discussed features may also be implemented in other forms (e.g., devices or programs). Devices may be implemented in appropriate hardware, software, and firmware, etc. Methods may be implemented in devices such as processors, which generally refer to processing devices including, for example, computers, microprocessors, integrated circuits, or programmable logic devices. Processors also include communication devices such as computers, cell phones, portable / personal digital assistants ("PDAs"), and other devices that facilitate the communication of information between end-users. Explanation of the symbols

[0074] 110 : Pedal part 120 : Reservoir 130: Hydraulic generator 140: First valve actuation unit 150: Caliper section 160: Second valve actuation unit 170 : Vehicle height adjustment actuator unit 180: Garage adjustment hydraulic generator

Claims

Claim 1 A pedal unit to which a driver's pedaling force for vehicle braking is applied; a reservoir for storing brake oil for generating hydraulic pressure; a hydraulic pressure generating unit that generates hydraulic pressure corresponding to the pedaling force of the pedal unit using the oil stored in the reservoir; a first valve driving unit that applies the hydraulic pressure generated by the hydraulic pressure generating unit to a caliper unit for vehicle braking and additionally receives and applies hydraulic pressure generated by a ride height adjustment actuator unit to the caliper unit; and a second valve driving unit that applies the hydraulic pressure generated by the ride height adjustment actuator unit to the first valve driving unit. A driving braking and parking braking support device comprising: a control unit that controls the hydraulic generating unit and the first and second valve driving units according to the vehicle's ride height adjustment or braking situation, and a control unit that controls a control valve included in a hydraulic line formed between the reservoir and the first valve driving unit, the pedal unit and the first valve driving unit, the first valve driving unit and the second valve driving unit, and the first valve driving unit and the caliper unit; wherein the ride height adjustment actuator unit generates hydraulic pressure pressurized by a sprung mass generated according to the vehicle's ride height. Claim 2 A driving braking and parking braking support device according to claim 1, wherein the second valve driving unit comprises an interruption valve and a proportional valve. Claim 3 A driving braking and parking braking support device according to claim 1, wherein the second valve driving unit has a plurality of fluid passages branched from the first valve driving unit to transmit hydraulic pressure to the front wheel side and rear wheel side ride height adjustment actuator units, and a valve is formed in each of the plurality of fluid passages branched from the first valve driving unit, and the control unit opens the valves formed in each of the plurality of fluid passages when raising or lowering the ride height and when parking, and closes them when maintaining the ride height and braking. Claim 4 A driving braking and parking braking support device according to claim 3, wherein the control unit separately controls each valve in consideration of cases where the difference in front / rear weight distribution of the vehicle is large, and adjusts the hydraulic application or hydraulic return speed through proportional control to prevent the vehicle from descending too quickly due to the vehicle weight when lowering the vehicle height. Claim 5 A driving braking and parking braking support device according to claim 1, wherein the second valve driving unit is implemented in a form including a latch-type solenoid valve. Claim 6 delete Claim 7 A driving braking and parking braking support device according to claim 1, further comprising a height adjustment hydraulic generation unit for adjusting the height by separately generating hydraulic pressure for height adjustment and applying it to the height adjustment actuator unit. Claim 8 A driving braking and parking braking support device according to claim 7, wherein the height adjustment hydraulic generating unit applies hydraulic pressure to the height adjustment actuator unit or transmits hydraulic pressure to the first valve driving unit through the second valve driving unit according to the control of the control unit. Claim 9 A driving braking and parking braking support device according to claim 1, wherein the control valve (①) of the return hydraulic line formed between the reservoir and the first valve drive unit is a Normal Close valve to prevent power consumption in the ignition off state, and the control unit controls the control valve (①) of the return hydraulic line to open when lowering the vehicle height and releasing the brake, and controls it to close when raising the vehicle height, braking the vehicle, and turning off the ignition. Claim 10 In claim 1, the control valve (②) of the caliper hydraulic line formed between the first valve driving unit and the caliper unit is a Normal Open valve, and the control unit is characterized by maintaining a closed state by applying current during vehicle height increase or vehicle height decrease. Claim 11 A driving braking and parking braking support device according to claim 1, wherein the control valve (③) of the hydraulic line of the vehicle height control actuator formed between the first valve driving unit and the second valve driving unit is a normally open valve capable of low-power driving to maintain a closed state when maintaining vehicle height and to maintain an open state to transmit parking pressure when parking, or a latch-type solenoid valve that does not use current when maintaining the state. Claim 12 A driving braking and parking braking support device according to claim 1, wherein the control valve (④) of the pedal unit hydraulic line formed between the pedal unit and the first valve driving unit is a normally closed valve, and an open control is performed in a designated situation according to the control of the control unit, and a relief valve is connected in parallel to the control valve (④) in preparation for the control valve (④) not operating due to a system failure. Claim 13 A pedal unit to which a driver's pedaling force for vehicle braking is applied; a reservoir for storing brake oil for generating hydraulic pressure; a hydraulic pressure generating unit that generates hydraulic pressure corresponding to the pedaling force of the pedal unit using the oil stored in the reservoir; a first valve driving unit that applies the hydraulic pressure generated by the hydraulic pressure generating unit to a caliper unit for vehicle braking and additionally receives and applies hydraulic pressure generated by a ride height adjustment actuator unit to the caliper unit; and a second valve driving unit that applies the hydraulic pressure generated by the ride height adjustment actuator unit to the first valve driving unit. A driving braking and parking braking support device comprising: a control unit that controls the hydraulic generator and the first and second valve drive units according to the vehicle's ride height adjustment or braking situation, and controls the control valve included in the hydraulic line formed between the reservoir and the first valve drive unit, the pedal unit and the first valve drive unit, the first valve drive unit and the second valve drive unit, and the first valve drive unit and the caliper unit; wherein, in the case of a ride height increase situation, the control unit closes the control valve (①) of the return hydraulic line formed between the reservoir and the first valve drive unit, pumps the hydraulic generator to generate hydraulic pressure, closes the control valve (②) of the caliper hydraulic line formed between the first valve drive unit and the caliper unit, and opens the control valve (③) of the ride height adjustment actuator hydraulic line formed between the first valve drive unit and the second valve drive unit. Claim 14 A pedal unit to which a driver's pedaling force for vehicle braking is applied; a reservoir for storing brake oil for generating hydraulic pressure; a hydraulic pressure generating unit that generates hydraulic pressure corresponding to the pedaling force of the pedal unit using the oil stored in the reservoir; a first valve driving unit that applies the hydraulic pressure generated by the hydraulic pressure generating unit to a caliper unit for vehicle braking and additionally receives and applies hydraulic pressure generated by a ride height adjustment actuator unit to the caliper unit; and a second valve driving unit that applies the hydraulic pressure generated by the ride height adjustment actuator unit to the first valve driving unit. A driving braking and parking braking support device comprising: a control unit that controls the hydraulic generating unit and the first and second valve driving units, and controls the control valve included in the hydraulic line formed between the reservoir and the first valve driving unit, the pedal unit and the first valve driving unit, the first valve driving unit and the second valve driving unit, and the first valve driving unit and the caliper unit, depending on the vehicle's ride height adjustment or braking situation; wherein, in the case of a ride height lowering situation, the control unit opens the control valve (①) of the return hydraulic line formed between the reservoir and the first valve driving unit, closes the control valve (②) of the caliper hydraulic line formed between the first valve driving unit and the caliper unit, and opens the control valve (③) of the ride height adjustment actuator hydraulic line formed between the first valve driving unit and the second valve driving unit. Claim 15 A pedal unit to which a driver's pedaling force for vehicle braking is applied; a reservoir for storing brake oil for generating hydraulic pressure; a hydraulic pressure generating unit that generates hydraulic pressure corresponding to the pedaling force of the pedal unit using the oil stored in the reservoir; a first valve driving unit that applies the hydraulic pressure generated by the hydraulic pressure generating unit to a caliper unit for vehicle braking and additionally receives and applies hydraulic pressure generated by a ride height adjustment actuator unit to the caliper unit; and a second valve driving unit that applies the hydraulic pressure generated by the ride height adjustment actuator unit to the first valve driving unit. A driving braking and parking braking support device comprising: a control unit that controls the hydraulic generating unit and the first and second valve driving units, and controls the control valve included in the hydraulic line formed between the reservoir and the first valve driving unit, the pedal unit and the first valve driving unit, the first valve driving unit and the second valve driving unit, and the first valve driving unit and the caliper unit, depending on the vehicle's ride height adjustment or braking situation; wherein, in the case of a ride height maintenance situation, the control unit closes the control valve (①) of the return hydraulic line formed between the reservoir and the first valve driving unit, opens the control valve (②) of the caliper hydraulic line formed between the first valve driving unit and the caliper unit, and closes the control valve (③) of the ride height adjustment actuator hydraulic line formed between the first valve driving unit and the second valve driving unit. Claim 16 A pedal unit to which a driver's pedaling force for vehicle braking is applied; a reservoir for storing brake oil for generating hydraulic pressure; a hydraulic pressure generating unit that generates hydraulic pressure corresponding to the pedaling force of the pedal unit using the oil stored in the reservoir; a first valve driving unit that applies the hydraulic pressure generated by the hydraulic pressure generating unit to a caliper unit for vehicle braking and additionally receives and applies hydraulic pressure generated by a ride height adjustment actuator unit to the caliper unit; and a second valve driving unit that applies the hydraulic pressure generated by the ride height adjustment actuator unit to the first valve driving unit. A driving braking and parking braking support device comprising: a control unit that controls the hydraulic generator and the first and second valve drive units, and controls the control valve included in the hydraulic line formed between the reservoir and the first valve drive unit, the pedal unit and the first valve drive unit, the first valve drive unit and the second valve drive unit, and the first valve drive unit and the caliper unit, depending on the vehicle's ride height adjustment or braking situation; wherein, in the case of a vehicle braking situation, the control unit closes the control valve (①) of the return hydraulic line formed between the reservoir and the first valve drive unit, pumps the hydraulic generator to generate hydraulic pressure, opens the control valve (②) of the caliper hydraulic line formed between the first valve drive unit and the caliper unit, and closes the control valve (③) of the ride height adjustment actuator hydraulic line formed between the first valve drive unit and the second valve drive unit. Claim 17 A pedal unit to which a driver's pedaling force for vehicle braking is applied; a reservoir for storing brake oil for generating hydraulic pressure; a hydraulic pressure generating unit that generates hydraulic pressure corresponding to the pedaling force of the pedal unit using the oil stored in the reservoir; a first valve driving unit that applies the hydraulic pressure generated by the hydraulic pressure generating unit to a caliper unit for vehicle braking and additionally receives and applies hydraulic pressure generated by a ride height adjustment actuator unit to the caliper unit; and a second valve driving unit that applies the hydraulic pressure generated by the ride height adjustment actuator unit to the first valve driving unit. A driving braking and parking braking support device comprising: a control unit that controls the hydraulic generator and the first and second valve drive units, and controls the control valve included in the hydraulic line formed between the reservoir and the first valve drive unit, the pedal unit and the first valve drive unit, the first valve drive unit and the second valve drive unit, and the first valve drive unit and the caliper unit, depending on the vehicle's ride height adjustment or braking situation; wherein, in the case of an emergency braking situation where the hydraulic generator does not operate and braking hydraulic pressure is not generated, or a parking braking situation, the control unit closes the control valve (①) of the return hydraulic line formed between the reservoir and the first valve drive unit, opens the control valve (②) of the caliper hydraulic line formed between the first valve drive unit and the caliper unit, and opens the control valve (③) of the ride height adjustment actuator hydraulic line formed between the first valve drive unit and the second valve drive unit. Claim 18 delete Claim 19 A control unit of a driving braking and parking braking support device performs control of a hydraulic generator and a first and second valve drive unit according to the vehicle's ride height adjustment or braking situation; The method comprises the step of controlling a control valve included in a hydraulic line formed between a reservoir and a first valve drive unit, a pedal unit and a first valve drive unit, a first valve drive unit and a second valve drive unit, and between a first valve drive unit and a caliper unit; wherein the first valve drive unit applies hydraulic pressure generated from the hydraulic power generator to the caliper unit for vehicle braking, additionally receives hydraulic pressure generated from the ride height adjustment actuator unit and applies it to the caliper unit, and the second valve drive unit applies hydraulic pressure generated from the ride height adjustment actuator unit to the first valve drive unit, wherein in the case of a vehicle ride height increase situation, the control unit closes the control valve (①) of the return hydraulic line formed between the reservoir and the first valve drive unit, pumps the hydraulic power generator to generate hydraulic pressure, closes the control valve (②) of the caliper hydraulic line formed between the first valve drive unit and the caliper unit, and controls the ride height adjustment actuator hydraulic line formed between the first valve drive unit and the second valve drive unit. Driving braking and parking braking support method characterized by opening the valve (③). Claim 20 A control unit of a driving braking and parking braking support device performs control of a hydraulic generator and a first and second valve drive unit according to the vehicle's ride height adjustment or braking situation; The driving braking and parking braking support method comprises the step of controlling a control valve included in a hydraulic line formed between a reservoir and a first valve drive unit, a pedal unit and a first valve drive unit, a first valve drive unit and a second valve drive unit, and between a first valve drive unit and a caliper unit; wherein the first valve drive unit applies hydraulic pressure generated from the hydraulic pressure generating unit to the caliper unit for vehicle braking, additionally receives hydraulic pressure generated from the ride height adjustment actuator unit and applies it to the caliper unit, and the second valve drive unit applies hydraulic pressure generated from the ride height adjustment actuator unit to the first valve drive unit, wherein in the case of a vehicle ride height lowering situation, the control unit opens the control valve (①) of the return hydraulic line formed between the reservoir and the first valve drive unit, closes the control valve (②) of the caliper hydraulic line formed between the first valve drive unit and the caliper unit, and opens the control valve (③) of the ride height adjustment actuator hydraulic line formed between the first valve drive unit and the second valve drive unit. method. Claim 21 A control unit of a driving braking and parking braking support device performs control of a hydraulic generator and a first and second valve drive unit according to the vehicle's ride height adjustment or braking situation; A driving braking and parking braking support method comprising: a step of controlling a control valve included in a hydraulic line formed between a reservoir and a first valve driving unit, a pedal unit and a first valve driving unit, a first valve driving unit and a second valve driving unit, and a first valve driving unit and a caliper unit; wherein the first valve driving unit applies hydraulic pressure generated from the hydraulic pressure generating unit to the caliper unit for vehicle braking, additionally receives hydraulic pressure generated from the ride height adjustment actuator unit and applies it to the caliper unit, and the second valve driving unit applies hydraulic pressure generated from the ride height adjustment actuator unit to the first valve driving unit, and in the case of a vehicle ride height maintenance situation, the control unit closes the control valve (①) of the return hydraulic line formed between the reservoir and the first valve driving unit, opens the control valve (②) of the caliper hydraulic line formed between the first valve driving unit and the caliper unit, and closes the control valve (③) of the ride height adjustment actuator hydraulic line formed between the first valve driving unit and the second valve driving unit. Claim 22 A control unit of a driving braking and parking braking support device performs control of a hydraulic generator and a first and second valve drive unit according to the vehicle's ride height adjustment or braking situation; The method comprises the step of controlling a control valve included in a hydraulic line formed between a reservoir and a first valve drive unit, a pedal unit and a first valve drive unit, a first valve drive unit and a second valve drive unit, and between a first valve drive unit and a caliper unit; wherein the first valve drive unit applies hydraulic pressure generated from the hydraulic pressure generator to the caliper unit for vehicle braking, additionally receives hydraulic pressure generated from the ride height adjustment actuator unit and applies it to the caliper unit, and the second valve drive unit applies hydraulic pressure generated from the ride height adjustment actuator unit to the first valve drive unit, wherein in the case of a braking situation of the vehicle, the control unit closes the control valve (①) of the return hydraulic line formed between the reservoir and the first valve drive unit, pumps the hydraulic pressure generator to generate hydraulic pressure, opens the control valve (②) of the caliper hydraulic line formed between the first valve drive unit and the caliper unit, and controls the ride height adjustment actuator hydraulic line formed between the first valve drive unit and the second valve drive unit. Driving braking and parking braking support method characterized by closing the valve (③). Claim 23 A control unit of a driving braking and parking braking support device performs control of a hydraulic generator and a first and second valve drive unit according to the vehicle's ride height adjustment or braking situation; The method comprises the step of controlling a control valve included in a hydraulic line formed between a reservoir and a first valve drive unit, a pedal unit and a first valve drive unit, a first valve drive unit and a second valve drive unit, and between a first valve drive unit and a caliper unit; wherein the first valve drive unit applies hydraulic pressure generated from the hydraulic power generator to the caliper unit for vehicle braking, and additionally receives hydraulic pressure generated from the ride height adjustment actuator unit and applies it to the caliper unit, and the second valve drive unit applies hydraulic pressure generated from the ride height adjustment actuator unit to the first valve drive unit, wherein in the case of an emergency braking situation or a parking braking situation where braking hydraulic pressure is not generated because the hydraulic power generator of the vehicle is not operating, the control unit closes the control valve (①) of the return hydraulic line formed between the reservoir and the first valve drive unit, opens the control valve (②) of the caliper hydraulic line formed between the first valve drive unit and the caliper unit, and controls the ride height adjustment actuator hydraulic line formed between the first valve drive unit and the second valve drive unit. Driving braking and parking braking support method characterized by opening the valve (③).

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