Hydraulic power assisting device and vehicle

Abstract

The hydraulic power assisting device comprises a brake assembly and a power assisting assembly, the brake assembly comprises a brake pedal, a liquid storage tank, a brake master cylinder and a brake wheel cylinder, the liquid storage tank is used for storing hydraulic liquid, the brake wheel cylinder is used for braking wheels, the brake master cylinder is connected between the liquid storage tank and the brake wheel cylinder, and the power assisting assembly is connected between the liquid storage tank and the brake wheel cylinder. The brake pedal is connected with the brake master cylinder to drive the brake master cylinder to act so as to drive the brake cylinder, and the power assisting assembly is connected between the brake master cylinder and the brake cylinder and used for increasing the pressure intensity of hydraulic fluid conveyed to the brake cylinder during starting so as to achieve brake power assisting. According to the hydraulic power-assisted braking device, the problems that in the prior art, pedal force and pedal stroke are too large, pressure building at the front section of braking is not timely, braking response is not sensitive and the like are solved, space arrangement is more flexible, and installation and arrangement in a narrow space are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of braking technology, specifically to a hydraulic power assist device and a vehicle. Background Technology

[0002] Vehicles such as motorcycles and sleds are equipped with braking systems for braking. However, existing braking systems suffer from problems such as excessive pedal force and travel, slow initial pressure build-up, delayed braking response, and large space requirements, resulting in poor spatial flexibility. This utility model aims to at least partially solve one of the technical problems in related technologies. Summary of the Invention

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a hydraulic power-assisted braking device, which improves upon the problems of excessive pedal force and pedal stroke, untimely pressure build-up in the early stage of braking, and insensitive braking response in the prior art. It also offers greater flexibility in spatial arrangement, facilitating installation in confined spaces.

[0005] The hydraulic power assist device of this utility model embodiment includes: a brake assembly, the brake assembly including a brake pedal, a reservoir, a master cylinder, and wheel cylinders, the reservoir for storing hydraulic fluid, the wheel cylinders for braking the wheels, the master cylinder connected between the reservoir and the wheel cylinders, and the brake pedal connected to the master cylinder for driving the master cylinder to actuate and drive the wheel cylinders; and a power assist assembly, the power assist assembly connected between the master cylinder and the wheel cylinders, and the power assist assembly for increasing the pressure of the hydraulic fluid supplied to the wheel cylinders during startup to achieve brake assist.

[0006] The hydraulic power assist device of this utility model embodiment can pressurize the hydraulic fluid output by the brake master cylinder by adding an assist assembly, thereby enhancing the braking assist effect. As a result, the brake pedal can achieve better braking with a smaller pedal force or pedal travel, and also avoids the problems of untimely pressure build-up and insensitive braking response in the early stage of braking.

[0007] In some embodiments, the power steering assembly is connected to the reservoir via a first pipeline for supplying hydraulic fluid to the power steering assembly.

[0008] In some embodiments, the hydraulic power assist device further includes a second line and a third line, the brake caliper includes a front pump assembly controlling the front wheels and a rear pump assembly controlling the rear wheels, the second line is connected between the power assist assembly and the front pump assembly for supplying hydraulic fluid to the front pump assembly, and the third line is connected between the power assist assembly and the rear pump assembly for supplying hydraulic fluid to the rear pump assembly.

[0009] In some embodiments, the hydraulic power assist device further includes a fourth line and a fifth line, both of which are connected between the brake master cylinder and the power assist assembly. The fourth line is used to allow hydraulic fluid from the brake master cylinder to flow into the power assist assembly, and the fifth line is used to allow hydraulic fluid from the power assist assembly to flow back to the brake assembly.

[0010] In some embodiments, the hydraulic power assist device further includes a sixth pipeline and a seventh pipeline, both of which are connected between the reservoir and the master cylinder. The sixth pipeline is used to supply hydraulic fluid from the reservoir to the master cylinder, and the seventh pipeline is used to supply hydraulic fluid from the master cylinder back to the reservoir.

[0011] In some embodiments, the first pipe, the second pipe, the third pipe, the fourth pipe, the fifth pipe, the sixth pipe, and the seventh pipe are all flexible hoses.

[0012] In some embodiments, at least one of the brake pedal and the master cylinder is provided with a displacement sensor or an angle sensor, the displacement sensor or the angle sensor being used to detect the displacement of the brake pedal, the power assist assembly including a controller and a power supply, the controller being used to receive the detection signal from the displacement sensor or the angle sensor and control the power assist assembly to start according to the detection signal, and the power supply being connected to the controller to provide power to the controller.

[0013] In some embodiments, the reservoir and / or the power assist assembly are integrated onto the master cylinder.

[0014] The vehicle of this utility model embodiment includes the hydraulic power steering device described in the above embodiment.

[0015] The vehicle of this utility model embodiment, by adopting the above-mentioned hydraulic power assist device, can pressurize the hydraulic fluid output by the master cylinder of the brake by adding a power assist assembly, thereby enhancing the braking assist. As a result, the brake pedal can achieve better braking with a smaller pedal force or pedal travel, and also avoids the problems of untimely pressure build-up in the early stage of braking and insensitive braking response. The vehicle has a good driving experience and high safety.

[0016] In some embodiments, the master cylinder is located within the spatial envelope formed by the front wheel fender and the front fender and is mounted on the vehicle frame, and the power assist assembly is integrated on the master cylinder, or the power assist assembly is arranged on one side of the vehicle body in the width direction. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a hydraulic power assist device according to an embodiment of the present utility model, wherein a displacement sensor is provided on the brake master cylinder.

[0018] Figure 2 This is a schematic diagram of the structure of a hydraulic power assist device according to an embodiment of the present utility model, wherein an angle sensor is provided on the brake master cylinder.

[0019] Figure 3 This is a schematic diagram of the structure of a hydraulic power assist device according to an embodiment of the present utility model, wherein the reservoir is integrated on the master brake pump.

[0020] Figure 4 This is a schematic diagram of the structure of a hydraulic power assist device according to an embodiment of the present utility model, wherein the power assist assembly is integrated on the brake master cylinder.

[0021] Figure 5 This is a structural schematic diagram of a vehicle according to an embodiment of the present utility model.

[0022] Figure label:

[0023] Brake pedal 1, reservoir 2, power steering assembly 3, power supply 4, brake caliper 5, master brake cylinder 6, displacement sensor 7, angle sensor 8, first line 9, second line 10, third line 11, fourth line 12, fifth line 13, sixth line 14, seventh line 15, front wheel mudguard 16, front mudguard 17, front shock absorber assembly 18, steering gear 19, ESP system 20. Detailed Implementation

[0024] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] like Figures 1-4As shown, the hydraulic power assist device of this utility model embodiment includes a braking assembly and a power assist assembly 3. The braking assembly includes a brake pedal 1, a reservoir 2, a master cylinder 6, and wheel cylinders 5. The reservoir 2 is used to store hydraulic fluid, and the wheel cylinders 5 are used to brake the wheels. The master cylinder 6 is connected between the reservoir 2 and the wheel cylinders 5. The brake pedal 1 is connected to the master cylinder 6 to drive the master cylinder 6 to drive the wheel cylinders 5. The power assist assembly 3 is connected between the master cylinder 6 and the wheel cylinders 5, and the power assist assembly 3 is used to increase the pressure of the hydraulic fluid delivered to the wheel cylinders 5 during startup to achieve braking assistance.

[0026] It should be noted that the hydraulic fluid can be hydraulic oil, and the number of brake calipers 5 can correspond to the number of wheels of the vehicle. In some other embodiments, brake calipers 5 can be installed only on some wheels.

[0027] During operation, the user can drive the master cylinder 6 by pressing the brake pedal 1. At this time, some of the hydraulic fluid in the master cylinder 6 can flow back to the reservoir through the corresponding pipeline, while some of the hydraulic fluid is delivered to the power assist assembly 3. The power assist assembly 3 pressurizes the hydraulic fluid and delivers it to the brake slave cylinder 5 to drive the brake slave cylinder 5, thereby achieving braking of the wheels. In this process, the pressurization of the power assist assembly 3 can achieve braking assistance.

[0028] The hydraulic power assist device of this utility model embodiment, by adding the power assist assembly 3, can pressurize the hydraulic fluid output by the brake master cylinder 6, thereby enhancing the braking assist effect. As a result, the brake pedal 1 can achieve better braking when a smaller pedal force or pedal stroke is applied, and also avoids the problems of untimely pressure build-up and insensitive braking response in the early stage of braking.

[0029] In some embodiments, such as Figures 1-3 As shown, the power steering assembly 3 is connected to the reservoir 2 via a first pipeline 9, which is used to supply hydraulic fluid to the power steering assembly 3. In other words, when the power steering assembly 3 is started, in addition to directly pressurizing and supplying the hydraulic fluid output from the master cylinder 6, it can also replenish fluid from the reservoir 2 through the first pipeline 9, further improving the braking assist effect.

[0030] In some embodiments, the hydraulic power steering system further includes a second line 10 and a third line 11. The brake caliper 5 includes a front pump assembly controlling the front wheels and a rear pump assembly controlling the rear wheels. The second line 10 is connected between the power steering assembly 3 and the front pump assembly for supplying hydraulic fluid to the front pump assembly, and the third line 11 is connected between the power steering assembly 3 and the rear pump assembly for supplying hydraulic fluid to the rear pump assembly. For example, as... Figure 1As shown, the wheel includes two front wheels and two rear wheels. There are four brake calipers 5 to control the four wheels respectively. The brake calipers 5 controlling the two front wheels form the front pump group, and the brake calipers 5 controlling the two rear wheels form the rear pump group. The power assist group can assist and pressurize the front pump group through the second pipeline 10, and assist and pressurize the rear pump group through the third pipeline 11.

[0031] In addition, such as Figure 1 As shown, the first pipeline 9 and the second pipeline 10 each include a main pipeline and two branch pipelines. The two branch pipelines correspond to the two brake sub-pumps 5 of a pump group, and the other ends of the two branch pipelines are connected in parallel to the outlet end of the main pipeline. The inlet end of the main pipeline is connected to the power steering assembly 3.

[0032] It should be noted that, depending on the number of wheels, the brake caliper 5 is not limited to only including the front pump assembly and the rear pump assembly, and the number of pipes connecting the power steering assembly 3 and the brake caliper 5 also needs to be determined according to the specific number of pump assemblies.

[0033] In some embodiments, the hydraulic power assist device further includes a fourth line 12 and a fifth line 13, both of which are connected between the brake master cylinder 6 and the power assist assembly 3. The fourth line 12 is used to supply hydraulic fluid from the brake master cylinder 6 into the power assist assembly 3, and the fifth line 13 is used to supply hydraulic fluid from the power assist assembly 3 back to the brake assembly.

[0034] Specifically, when the power steering assembly 3 is started, the master cylinder 6 delivers hydraulic fluid to the power steering assembly 3 through the fourth line 12. After the power steering assembly 3 pressurizes the hydraulic fluid, part of it is delivered to the brake slave cylinder 5 through the first line 9 and the second line 10, and the rest flows back to the master cylinder 6 through the fifth line 13.

[0035] In some embodiments, the hydraulic power assist device further includes a sixth line 14 and a seventh line 15, both of which are connected between the reservoir 2 and the master cylinder 6. The sixth line 14 is used to supply hydraulic fluid from the reservoir 2 to the master cylinder 6, and the seventh line 15 is used to supply hydraulic fluid from the master cylinder 6 back to the reservoir 2.

[0036] like Figure 1 As shown, when the brake pedal 1 drives the brake master cylinder 6 to operate, the hydraulic oil in the reservoir 2 is transported to the brake master cylinder 6 through the sixth line 14. The brake master cylinder 6 then transports part of the hydraulic fluid to the power steering assembly 3 for pressurization through the fourth line 12. The remaining hydraulic fluid flows back to the reservoir 2 through the seventh line when the brake pedal 1 is reset.

[0037] Preferably, the first pipe 9, the second pipe 10, the third pipe 11, the fourth pipe 12, the fifth pipe 13, the sixth pipe 14, and the seventh pipe 15 are all flexible hoses. The flexible hoses can be made of materials such as rubber, allowing them to be bent according to actual conditions during assembly, thus facilitating the installation and adjustment of the power steering assembly 3.

[0038] In some embodiments, at least one of the brake pedal 1 and the brake master cylinder 6 is provided with a displacement sensor 7 or an angle sensor 8. The displacement sensor 7 or the angle sensor 8 is used to detect the displacement of the brake pedal 1. The power assist assembly 3 includes a controller and a power supply 4. The controller is used to receive the detection signal from the displacement sensor 7 or the angle sensor 8 and control the power assist assembly 3 to start according to the detection signal. The power supply 4 is connected to the controller to provide power to the controller.

[0039] Specifically, in some embodiments, a displacement sensor 7 is installed on the master cylinder 6. When the brake pedal 1 moves, it will drive the push rod to move. After the displacement sensor 7 detects the displacement, it can send a start signal in time. After the controller receives the start signal, it starts the power assist assembly 3 to work, thereby realizing the intelligent linkage between braking and power assist, and ensuring the power assist effect of the power assist system.

[0040] In other embodiments, an angle sensor 8 is provided on the brake pedal 1. It is understood that the brake pedal 1 will twist at a certain angle when pressed, and the amount of twist can be converted into the displacement of the master cylinder push rod according to an algorithm. This displacement can be provided as a start signal to the controller to control the start of the power steering assembly 3. The selection of the displacement sensor 7 and the angle sensor 8 can be determined according to the layout space.

[0041] In some embodiments, the reservoir 2 and / or the power assist assembly 3 are integrated into the master cylinder 6. This integrated design further optimizes the spatial layout of the power assist device and improves installation flexibility.

[0042] The vehicle of this utility model embodiment includes the hydraulic power steering device described in the above embodiment.

[0043] The vehicle of this utility model embodiment, by adopting the above-mentioned hydraulic power assist device and by adding the power assist assembly 3, can pressurize the hydraulic fluid output by the master cylinder 6, thereby enhancing the braking assist. As a result, the brake pedal 1 can achieve better braking with a smaller pedal force or pedal travel, and also avoids the problems of untimely pressure build-up and insensitive braking response in the early stage of braking. The vehicle has a good driving experience and high safety.

[0044] In some embodiments, such as Figure 5As shown, the master cylinder 6 is located within the spatial envelope formed by the front fenders 16 and 17 and is mounted on the frame. The power steering assembly 3 is integrated into the master cylinder 6, or the power steering assembly 3 is arranged on one side of the vehicle body in the width direction. Specifically, as... Figure 5 As shown, the master cylinder 6 is located behind the front shock absorber assembly 18, to the left of the ESP system 20, and above the steering gear 19. The brake pedal 1 and its mounting bracket are located behind the master cylinder 6 (in the driver's cab). In addition, when the power steering assembly 3 and the master cylinder 6 are laid out separately, the position of the power steering assembly 3 can be flexibly selected to be arranged on the left or right side of the vehicle body according to the needs.

[0045] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A hydraulic power assist device, characterized in that, include: A braking assembly, comprising a brake pedal, a reservoir, a master cylinder, and wheel cylinders, wherein the reservoir stores hydraulic fluid, the wheel cylinders brake the wheels, the master cylinder is connected between the reservoir and the wheel cylinders, and the brake pedal is connected to the master cylinder to drive the master cylinder to actuate the wheel cylinders. A power assist assembly is connected between the master cylinder and the wheel cylinders, and the power assist assembly is used to increase the pressure of the hydraulic fluid supplied to the wheel cylinders during startup to achieve brake assist.

2. The hydraulic power assist device according to claim 1, characterized in that, The power steering assembly is connected to the reservoir via a first pipeline, which is used to supply hydraulic fluid to the power steering assembly.

3. The hydraulic power assist device according to claim 2, characterized in that, It also includes a second line and a third line. The brake caliper includes a front pump assembly that controls the front wheels and a rear pump assembly that controls the rear wheels. The second line is connected between the power steering assembly and the front pump assembly for supplying hydraulic fluid to the front pump assembly, and the third line is connected between the power steering assembly and the rear pump assembly for supplying hydraulic fluid to the rear pump assembly.

4. The hydraulic power assist device according to claim 3, characterized in that, It also includes a fourth pipe and a fifth pipe, both of which are connected between the brake master cylinder and the power steering assembly. The fourth pipe is used to allow hydraulic fluid from the brake master cylinder to flow into the power steering assembly, and the fifth pipe is used to allow hydraulic fluid from the power steering assembly to flow back to the brake assembly.

5. The hydraulic power assist device according to claim 4, characterized in that, It also includes a sixth pipeline and a seventh pipeline, both of which are connected between the reservoir and the master cylinder. The sixth pipeline is used to transport the hydraulic fluid in the reservoir to the master cylinder, and the seventh pipeline is used to return the hydraulic fluid from the master cylinder to the reservoir.

6. The hydraulic power assist device according to claim 5, characterized in that, The first pipe, the second pipe, the third pipe, the fourth pipe, the fifth pipe, the sixth pipe, and the seventh pipe are all flexible hoses.

7. The hydraulic power assist device according to claim 1, characterized in that, At least one of the brake pedal and the brake master cylinder is provided with a displacement sensor or an angle sensor. The displacement sensor or the angle sensor is used to detect the displacement of the brake pedal. The power assist assembly includes a controller and a power supply. The controller is used to receive the detection signal from the displacement sensor or the angle sensor and control the power assist assembly to start according to the detection signal. The power supply is connected to the controller to provide power to the controller.

8. The hydraulic power assist device according to claim 1, characterized in that, The reservoir and / or the power assist assembly are integrated into the master cylinder.

9. A vehicle, characterized in that, Includes the hydraulic power assist device according to any one of claims 1-8.

10. The vehicle according to claim 9, characterized in that, The master cylinder is located within the spatial envelope formed by the front wheel fender and the front fender and is mounted on the vehicle frame. The power steering assembly is integrated into the master cylinder, or the power steering assembly is arranged on one side of the vehicle body in the width direction.

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