Brake fluid detection device for tail end of vehicle brake system

Abstract

The utility model relates to a brake fluid detection device for the tail end of a vehicle brake system. The brake fluid detection device for the tail end of the vehicle brake system comprises a multi-way pipeline, the multi-way pipeline at least comprises a first connector, a second connector, a third connector and a fourth connector, and the brake fluid detection device comprises an oil drainage pipeline connected to the first connector, a pressure detector connected to the second connector and a vacuum detector connected to the third connector. The oil drainage pipeline comprises a transparent pipe connected to the first connector and an oil drainage bolt connected to the tail end of the transparent pipe, and the first control valve can be operated to be closed so that a negative pressure state communicating with a vehicle braking system can be formed in the brake fluid detection device. And the valve can be operated to be opened to release the negative pressure state. The detection device provided by the utility model can realize comprehensive, real-time and visual detection of the performance of the brake fluid, is compact in structure and simple and convenient to operate, and greatly improves the detection efficiency and accuracy.

Description

TECHNICAL FIELD

[0001] The present application relates to the automobile technical field, in particular to a brake fluid detection device for the end of a vehicle braking system. BACKGROUND

[0002] In the process of automobile manufacturing, the braking effect of the vehicle is related to the safety of personnel, so the vehicle needs to be strictly tested for braking force and ESC (Electronic Stability Control) supercharging effect before leaving the factory. In the subsequent use and maintenance of the vehicle, the faults of the braking system also need to be timely investigated to avoid major accidents. At present, the main difficulty of troubleshooting the braking system is that it is difficult to directly and quickly investigate the problem, and each possible factor that may cause the problem needs to be investigated one by one, resulting in a slow troubleshooting process.

[0003] At present, when adding brake fluid or investigating the performance of the brake fluid, the traditional method is to manually step on the brake pedal and cooperate with the segmented oil discharge mode, which relies on operating experience and is inefficient. At the same time, the conventional means for detecting the sealing performance of the braking system need to rely on external pressure pumps or special detection equipment, and the operation process is complicated, there is a risk of brake fluid leakage during the detection process, and it is difficult to directly judge the air discharge state. Although there are some detection tools in the prior art that can assist in detecting the performance of the brake fluid, they generally have the problems of dispersed structure and single function, and have the disadvantages of low integration and poor operation continuity, which affect the detection efficiency and accuracy.

[0004] Therefore, it is necessary to provide a new technical scheme to overcome the deficiencies in the prior art. CONTENT OF THE INVENTION

[0005] Based on this, the present application provides a brake fluid detection device for the end of a vehicle braking system, which can realize comprehensive, real-time and intuitive detection of the performance of the brake fluid. At the same time, the device has compact structure and simple operation, which greatly improves the detection efficiency and accuracy.

[0006] To this end, the application adopts the following technical scheme: a brake fluid detection device for the end of a vehicle brake system, comprising a multi-way pipeline, the multi-way pipeline comprising at least a first interface, a second interface, a third interface and a fourth interface, the brake fluid detection device comprising a drain pipeline connected to the first interface, a pressure detector connected to the second interface, a vacuum detector connected to the third interface, and a first control valve connected to the fourth interface, wherein the drain pipeline comprises a transparent tube connected to the first interface and a drain bolt connected to the end of the transparent tube, the first control valve can be operated to be closed so as to form a negative pressure state in the brake fluid detection device which is in communication with the vehicle brake system, and can be operated to be opened to release the negative pressure state.

[0007] In some embodiments, the multi-way pipeline comprises at least one four-way valve, or the multi-way pipeline comprises at least two three-way valves.

[0008] In some embodiments, a second control valve is arranged between the vacuum detector and the third interface.

[0009] In some embodiments, the first control valve and the second control valve are both manual ball valves.

[0010] In some embodiments, a set of butt joints is arranged between the vacuum detector and the second control valve in butt joint cooperation, and a clamp is arranged outside the set of butt joints.

[0011] In some embodiments, the set of butt joints comprises a pair of flange flanges abutting each other, and the clamp presses the pair of flange flanges close to each other in the axial direction of the set of butt joints.

[0012] In some embodiments, the first interface and the third interface are in the same straight line, and the second interface and the fourth interface are in the same straight line.

[0013] In some embodiments, the transparent tube is a transparent hose.

[0014] In some embodiments, the length of the transparent tube is not less than 100 mm, and the diameter of the transparent tube is not greater than 8 mm.

[0015] In some embodiments, the drain bolt comprises, in sequence, a first connecting section with internal threads, a second connecting section with external threads, and a tapered sealing section arranged at the end of the second connecting section, and the outer contour of the first connecting section is a hexahedron suitable for cooperating with a wrench tool.

[0016] The brake fluid detection device for the end of the vehicle brake system provided by the application realizes comprehensive, real-time and intuitive detection of the performance of brake fluid by integrating a multi-way pipeline, a pressure detector, a vacuum detector and a transparent tube. Meanwhile, the device is compact in structure and easy to operate, and only needs to be connected to the oil drain port at the end of the brake system without disassembling other components of the brake system to complete the detection work, thereby greatly improving the detection efficiency and accuracy. In addition, through the design of the first control valve, the device can also realize accurate control of the negative pressure environment inside the detection device, thereby providing strong support for the maintenance and repair of the brake system. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0018] Figure 1 It is a perspective assembly view of an embodiment of the brake fluid detection device of the application.

[0019] Figure 2 It is a perspective assembly view of another view of an embodiment of the brake fluid detection device of the application.

[0020] Figure 3 It is an exploded perspective view of an embodiment of the brake fluid detection device of the application.

[0021] Figure 4 It is a sectional view of an embodiment of the brake fluid detection device of the application.

[0022] The element reference numbers are as follows:

[0023] 100, brake fluid detection device; 1, four-way valve; 11, first interface; 12, second interface; 13, third interface; 14, fourth interface; 2, oil drain pipeline; 21, transparent tube; 22, oil drain bolt; 3, pressure detector; 4, vacuum detector; 41, second control valve; 42, clamp; 43, butt joint; 431, flange; 5, first control valve. DETAILED DESCRIPTION

[0024] To make the above objectives, features and advantages of the present application more clear, the specific embodiments of the present application will be described in detail below with reference to the drawings. Numerous specific details will be set forth in the following description in order to provide a thorough understanding of the present application. However, it will be appreciated by those skilled in the art that the present application can be practiced in a variety of ways beyond the specific details set forth in the description below, which are presented for purposes of example and explanation and not limitation of the present application.

[0025] It is to be noted that when an element or layer is referred to as being "on" or "connected to" another element or layer, it can be directly on or connected to the other element or layer, or intervening elements or layers can be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements or layers present. The use of the terms "on" and "connected to" in the present description are to be construed in the broadest sense and can include over, under, or adjacent.

[0026] In addition, the terms "first", "second", etc. are used herein only to describe various elements, but do not imply or suggest relative importance or a quantity of the indicated elements. Thus, the features defined with "first", "second" can include at least one of the features explicitly or implicitly. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0027] In the present application, unless otherwise explicitly specified and limited, the "on", "under", "above" and "over" of a first feature to a second feature can be that the first feature is directly in contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the "above", "over" and "on" of a first feature to a second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. The "below", "under" and "under" of a first feature to a second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.

[0028] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.

[0029] Please refer to Figures 1 to 4As shown, the application provides a brake fluid detection device 100 for the end of a vehicle braking system, which comprises a multi-pass pipeline, the multi-pass pipeline comprising at least a first interface 11, a second interface 12, a third interface 13 and a fourth interface 14; the brake fluid detection device 100 comprises a drain pipeline 2 connected to the first interface 11, a pressure detector 3 connected to the second interface 12, a vacuum detector 4 connected to the third interface 13, and a first control valve 5 connected to the fourth interface 14. Wherein, the drain pipeline 2 comprises a transparent tube 21 connected to the first interface 11 and a drain bolt 22 connected to the end of the transparent tube 21. The first control valve 5 can be operated to be closed so as to form a negative pressure state in the brake fluid detection device 100 which is in communication with the vehicle braking system, and can be operated to be opened to release the negative pressure state.

[0030] The brake fluid detection device 100 for the end of a vehicle braking system provided by the application is used to be connected to the end of a vehicle braking system. The end of the vehicle braking system refers to the distal end away from the filling port of the vehicle braking system. Specifically, in the embodiment, the brake fluid detection device 100 is detachably connected to the drain bolt interface on the brake caliper. The brake caliper can be a brake caliper arranged at one or more of the left front wheel, the left rear wheel, the right front wheel and the right rear wheel of the vehicle.

[0031] The brake fluid detection device 100 for the end of a vehicle braking system provided by the application realizes comprehensive, real-time and intuitive detection of the performance of the brake fluid flowing out of the end of the braking system by integrating the multi-pass pipeline, the pressure detector 3, the vacuum detector 4 and the transparent tube 21. At the same time, the device has a compact structure and is easy to operate, and only needs to be connected to the drain port at the end of the braking system without the need to disassemble other components of the braking system to complete the detection work, thereby greatly improving the detection efficiency and accuracy. In addition, through the design of the first control valve 5, the device can also realize accurate control of the negative pressure environment in the detection device, thereby providing strong support for the maintenance and repair of the braking system.

[0032] The following will describe in detail each component of an embodiment of the brake fluid detection device 100 for the end of a vehicle braking system provided by the application in combination with the accompanying drawings.

[0033] Please refer to Figures 1 to 4As shown, in the embodiment, the brake fluid detection device 100 for the end of the vehicle brake system comprises a multi-way pipeline, a drain pipeline 2, a pressure detector 3, a vacuum detector 4 and a first control valve 5. The multi-way pipeline can be connected and matched with the related pipeline by using a multi-way valve. In the embodiment, the multi-way pipeline is realized by using at least one four-way valve 1, and the multi-way pipeline has four interfaces, i.e., a first interface 11, a second interface 12, a third interface 13 and a fourth interface 14. Among them, the first interface 11 and the third interface 13 are on the same straight line, and the second interface 12 and the fourth interface 14 are on the same straight line, forming a cross-shaped pipeline layout, which facilitates the arrangement of the drain pipeline 2, the pressure detector 3, the vacuum detector 4 and the first control valve 5, and avoids the interference between the components, thereby avoiding the inconvenience of disassembly and use.

[0034] In another embodiment, the multi-way pipeline is replaced by two or more three-way valves connected in series instead of the four-way valve 1. Specifically, two interfaces of the first three-way valve are connected with the drain pipeline 2 and the pressure detector 3 respectively, and the third interface is connected with the second three-way valve through a pipeline; the remaining two interfaces of the second three-way valve are connected with the vacuum detector 4 and the first control valve 5 respectively. This structure realizes the same function as the four-way valve 1 through flexible three-way valve combination, and is suitable for scenes with limited installation space.

[0035] Please refer to Figures 1 to 3 As shown, the drain pipeline 2 is connected to the first interface 11, and the drain pipeline 2 comprises a transparent tube 21 and a drain bolt 22. One end of the transparent tube 21 is connected and fixed to the first interface 11, and the other end is connected with the drain bolt 22. In the embodiment, the transparent tube 21 is an oil-resistant PVC transparent flexible tube, and the transparent tube 21 has a length of not less than 100 mm and a diameter of not more than 8 mm. This size can clearly observe the flow state of the brake fluid and whether there are bubbles, and also avoids the inconvenience of operation caused by too long pipeline. Specifically, the length of the transparent tube 21 is not less than 100 mm, so that there is enough length to ensure that bubbles and impurities have enough time and space to appear in the transparent tube 21 during the flow of brake fluid, facilitating the observation of bubbles and impurities in the brake fluid by the operator. Preferably, the length of the transparent tube 21 is between 100 mm and 300 mm, which ensures the observation effect and also considers the limitation of installation space. The diameter of the transparent tube 21 is designed to ensure the smooth flow of brake fluid and facilitate observation. In the embodiment, the diameter of the transparent tube 21 is set to be between 4 mm and 8 mm, which ensures the smooth flow of brake fluid and facilitates the observation of bubbles and impurities in the brake fluid by the detector.

[0036] In the embodiment, the oil drain bolt 22 has a three-section structure, i.e. the oil drain bolt 22 comprises a first connecting section with internal thread for connecting with the nut at the end of the transparent tube 21, a second connecting section with external thread for screwing into the oil drain port at the end of the vehicle braking system, and a tapered sealing section at the end of the second connecting section for cooperating with the tapered surface of the oil drain port to achieve sealing. The tapered sealing section of the oil drain bolt 22 is consistent with the taper of the oil drain port of the vehicle braking system, and when tightened, it is self-sealed through the tapered surface, improving the sealing performance. In the embodiment, the outer contour of the first connecting section is a hexahedral structure, which facilitates cooperation with a wrench tool for tightening or dismounting.

[0037] The second interface 12 is connected with a pressure detector 3 for real-time monitoring of the pressure change at the end of the braking system. The pressure detector 3 can be a mechanical pressure gauge or an electronic pressure sensor. The third interface 13 is connected with a vacuum detector 4. The vacuum detector 4 can be a digital vacuum gauge, which is used to detect the vacuum degree at the end of the braking system during the exhaust stage of the vehicle braking system, to ensure that the exhaust is completed.

[0038] As shown in Figure 3 , a second control valve 41 is arranged between the vacuum detector 4 and the third interface 13. In the embodiment, the second control valve 41 is a manual ball valve for controlling the on-off between the vacuum detector 4 and the four-way valve 1. During the exhaust stage, the second control valve 41 is opened to enable the vacuum detector 4 to communicate with the four-way valve 1 to detect the vacuum degree; after the exhaust is completed, the second control valve 41 is closed to avoid the entry of brake fluid, which can cause damage to the vacuum detector 4. In the embodiment, the second control valve 41 is a corrosion-resistant copper manual ball valve, and the surface of the valve body is marked with an on / off direction mark to facilitate quick operation.

[0039] Further, a set of butt joints 43 is arranged between the vacuum detector 4 and the second control valve 41. As shown in Figure 3 , the set of butt joints 43 is respectively provided with flange 431, and the end faces of the two flanges 431 are in close contact and are clamped in the axial direction by the clamp 42. The clamp 42 adjusts the tightness by bolts, so that the flanges 431 are in close contact, ensuring that the connection is sealed and leak-free. Further, sealing structures such as sealing pads and sealing rings can be further arranged between the set of butt joints 43 to improve the sealing performance. The connection mode of the butt joints 43 and the clamp 42 in the embodiment facilitates quick dismounting of the vacuum detector 4, and is suitable for maintenance or component replacement of the detection device.

[0040] The fourth interface 14 is connected with the first control valve 5, in the exhaust stage, the oil drain bolt 22 is screwed into the oil drain hole at the end of the vehicle braking system, the first control valve 5 is closed to make the brake fluid detection device 100 in sealed communication with the vehicle braking system, that is, to make the end of the vehicle braking system isolated from the external environment, when the vehicle braking system is exhausted to form a negative pressure, the negative pressure state is formed in the brake fluid detection device 100 to communicate with the vehicle braking system; after the detection of the brake fluid at the end of the braking system is completed, the first control valve 5 can be opened to release the negative pressure state, so that the internal atmosphere of the brake fluid detection device 100 returns to atmospheric pressure, facilitating the discharge of the residual brake fluid, the removal of each connecting part, and the cleaning of each pipeline of the brake fluid detection device 100. In the embodiment, the first control valve 5 is a corrosion-resistant copper manual ball valve, and the valve body surface is marked with an open / close direction mark to facilitate quick operation.

[0041] When the brake fluid detection device 100 provided by the application is used for detection, the bolt on the vehicle brake caliper is removed to expose the oil drain hole, the oil drain bolt 22 of the device is screwed into the oil drain hole at the end of the vehicle braking system and tightened to ensure that the conical sealing section is completely sealed; the vehicle braking system is exhausted by a vacuum filling machine or the like, and the negative pressure value of the internal environment of the brake fluid detection device 100 is observed by the vacuum detector 4 until the negative pressure meets the preset value; after the negative pressure is stable, the second control valve 41 is closed, and the brake fluid is added to the braking system by a vacuum filling machine or the like until the brake fluid flows into the transparent tube 21 of the brake fluid detection device 100. The operator directly observes whether the brake fluid flows continuously, whether there are bubbles, whether there are impurities, whether the color is normal, etc. through the transparent tube 21, and monitors the system pressure change through the pressure detector 3. After the detection is completed, the first control valve 5 is opened, the brake fluid detection device 100 is removed, and the original bolt on the vehicle brake caliper is installed back and tightened, and the operation is completed.

[0042] As known from the above description, the application realizes the integration of brake fluid state detection, system sealing test and emptying operation by integrating a multi-passage pipeline, a pressure / vacuum dual detector and a visual oil drain pipeline. The linkage design of the first control valve 5 and the second control valve 41 makes the establishment and release of the negative pressure environment controllable. The cooperation of the transparent tube 21 and the oil drain bolt 22 directly displays the liquid discharge process, and significantly improves the detection efficiency and accuracy.

[0043] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.

[0044] The above-described embodiments are merely illustrative of several embodiments of the present application, which are described in more detail and in a specific manner, but should not be construed as limiting the scope of the patent application. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A brake fluid detection device for the end of a vehicle braking system, characterized in that, The brake fluid detection device includes a multi-port pipeline, which includes at least a first interface, a second interface, a third interface, and a fourth interface. The brake fluid detection device includes a drain line connected to the first interface, a pressure detector connected to the second interface, a vacuum detector connected to the third interface, and a first control valve connected to the fourth interface. The drain line includes a transparent tube connected to the first interface and a drain bolt connected to the end of the transparent tube. The first control valve can be operated to close so that a negative pressure state communicating with the vehicle braking system is formed inside the brake fluid detection device, and can be operated to open to release the negative pressure state.

2. The brake fluid detection device for the end of a vehicle braking system according to claim 1, characterized in that, The multi-way pipeline includes at least one four-way valve, or the multi-way pipeline includes at least two three-way valves.

3. The brake fluid detection device for the end of a vehicle braking system according to claim 1, characterized in that, A second control valve is provided between the vacuum detector and the third interface.

4. The brake fluid detection device for the end of a vehicle braking system according to claim 3, characterized in that, Both the first control valve and the second control valve are manual ball valves.

5. The brake fluid detection device for the end of a vehicle braking system according to claim 3, characterized in that, The vacuum detector and the second control valve are provided with a set of mating joints and a clamp clamped on the outside of the set of mating joints.

6. The brake fluid detection device for the end of a vehicle braking system according to claim 5, characterized in that, The set of joints includes a pair of flanges that abut against each other, and the clamp presses the pair of flanges close to each other axially in the set of joints.

7. The brake fluid detection device for the end of a vehicle braking system according to claim 1, characterized in that, The first interface and the third interface are on the same straight line, and the second interface and the fourth interface are on the same straight line.

8. The brake fluid detection device for the end of a vehicle braking system according to claim 1, characterized in that, The transparent tube is a transparent flexible tube.

9. The brake fluid detection device for the end of a vehicle braking system according to claim 8, characterized in that, The length of the transparent tube is not less than 100mm and the diameter is not greater than 8mm.

10. The brake fluid detection device for the end of a vehicle braking system according to claim 1, characterized in that, The drain bolt sequentially includes a first connecting section with internal threads, a second connecting section with external threads, and a conical sealing section disposed at the end of the second connecting section. The outer contour of the first connecting section is a hexahedron suitable for mate with a wrench tool.

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