Liquid storage tank, braking system and vehicle

By incorporating a tubular channel within the reservoir and connecting it to the outlet pipe, the problem of air ingress during braking is resolved, improving the accuracy of hydraulic control and vehicle braking response speed, while simplifying the reservoir's structure and assembly process.

CN223990024UActive Publication Date: 2026-03-13BOSCH AUTOMOTIVE PRODUCTS (SUZHOU) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-30
Publication Date
2026-03-13

AI Technical Summary

Technical Problem

Existing fluid reservoirs are prone to air mixing during braking, affecting the accuracy of hydraulic control and the vehicle's braking response speed.

Method used

Design a liquid storage tank with a tubular channel inside the tank, which is connected to an outlet pipe and has a through opening near the filling port to ensure fluid communication. The bottom of the tank is integrally formed with the channel or forms an angle. The tank is made of plastic and has at least two outlet pipes that are separated by a partition. The overall structure is simple and easy to assemble.

Benefits of technology

It enables rapid extraction of brake fluid, prevents air from entering, ensures the accuracy of hydraulic control, improves vehicle braking response speed, and reduces the complexity and assembly difficulty of the reservoir.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN223990024U_ABST
    Figure CN223990024U_ABST
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Abstract

The utility model relates to a liquid storage tank, a braking system and a vehicle. The liquid storage tank comprises a tank body defining an inner space and a filling port located in the upper portion of the tank body, the filling port is communicated with the inner space of the tank body, a liquid outlet pipe is arranged on the lower portion of the tank body, a tubular channel is further arranged in the tank body, the tubular channel is provided with a first end and a closed second end, and the first end is communicated with the second end. The first end of the tubular channel is connected with the liquid outlet pipe and keeps fluid communication with the liquid outlet pipe, and a through opening is formed in the portion, close to the filling port, of the tubular channel. According to the liquid storage tank, the design of the tubular channel is adopted, brake liquid can be rapidly sucked out from the liquid outlet pipe during braking, air is prevented from being mixed into the liquid storage tank, and therefore the accuracy of hydraulic control is ensured, and the response speed in the vehicle braking process is increased. In addition, the liquid storage tank is simple in overall structure and convenient to assemble.
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Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically, to a liquid storage tank, a braking system provided with the liquid storage tank, and a vehicle equipped with the braking system. Background Technology

[0002] The information provided in this section is for the purpose of generally presenting the background of this disclosure. To the extent described in this section, the work of the currently named inventors and aspects of the description that may not constitute prior art at the time of filing are neither explicitly nor implicitly considered to be prior art of this disclosure.

[0003] Liquid reservoirs are widely used across various industries. In the automotive industry, brake fluid reservoirs are a crucial component of the vehicle's braking system. They store brake fluid, supply it to the braking system, and, when needed, supply brake fluid to the clutch system. Such reservoirs typically consist of a tank body defining an internal space and a filling port located at the top of the tank body, communicating with the internal space of the tank body. Utility Model Content

[0004] According to this application, a liquid storage tank is provided, the liquid storage tank including a tank body defining an internal space and a filling port located at the upper part of the tank body, the filling port communicating with the internal space of the tank body, a liquid outlet pipe provided at the lower part of the tank body, and a tubular channel also provided in the tank body, the tubular channel having a first end and a closed second end, the first end of the tubular channel being connected to the liquid outlet pipe and maintaining fluid communication, wherein the tubular channel has a through opening near the filling port.

[0005] Optionally, in the liquid storage tank as described above, the bottom of the tank body is integrally formed with the tubular channel; and / or

[0006] The angle between the plane at the bottom of the tank and the axis of the tubular channel is between 0 and 30°.

[0007] Optionally, in the storage tank as described above, there are at least two outlet pipes, and the first end of the tubular channel is connected to the outlet pipe that is furthest from the filling port among the at least two outlet pipes and maintains fluid communication.

[0008] Optionally, in the storage tank as described above, the interior of the tank body is provided with a partition to separate each of the at least two outlet pipes.

[0009] Optionally, in the liquid storage tank as described above, the lower part of the tank body is integrally formed with the partition.

[0010] Optionally, in the liquid storage tank as described above, the centerline of the upper part of the tank body is offset from the centerline of the lower part of the tank body.

[0011] Optionally, in the storage tank as described above, the second end of the tubular channel extends outward from the side wall of the tank body and is sealed by welding; and / or

[0012] The can is made of plastic; and / or

[0013] The tubular channel has a square or circular cross-sectional shape; and / or

[0014] The opening has a square or circular cross-sectional shape.

[0015] Optionally, in the liquid storage tank as described above, the lower part of the tank body is fixed to the target location by bolts.

[0016] Furthermore, according to this application, a braking system is also provided, wherein the braking system is provided with the above-mentioned reservoir, and the braking system further includes a master cylinder, which is connected to the reservoir via the outlet pipe.

[0017] In addition, according to this application, a vehicle is also provided, which is equipped with the above-described braking system.

[0018] It is understood that the reservoir of this application adopts a tubular channel design, which can quickly draw brake fluid from the outlet pipe during braking, preventing air from mixing in, thereby ensuring the accuracy of hydraulic control and improving the vehicle's response speed during braking. In addition, the reservoir of this application has a relatively simple overall structure and is easy to assemble. Attached Figure Description

[0019] The disclosure of this application will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. Furthermore, similar numbers in the drawings are used to denote similar components, wherein:

[0020] Figure 1 An exemplary front view of the liquid storage tank disclosed in this application is shown;

[0021] Figure 2 An exemplary top view of a liquid storage tank disclosed in this application is shown;

[0022] Figure 3 Exemplary Figure 1 A schematic diagram of the cross-section of the liquid storage tank along AA;

[0023] Figure 4An exemplary bottom view of the liquid storage tank disclosed in this application is shown; and

[0024] Figure 5 Exemplary Figure 4 A schematic diagram of the cross-section of the liquid storage tank along BB. Detailed Implementation

[0025] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. First, it should be noted that the directional terms such as up, down, left, right, front, back, inner, outer, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0026] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] Figure 1 The structure of one embodiment of the liquid storage tank according to this application is shown. The liquid storage tank 100 includes a tank body 110 defining an internal space and a filling port 120 located at the upper part 111 of the tank body 110. The filling port 120 communicates with the internal space of the tank body 110, and the upper end of the filling port 120 may be provided with a cover 130, the cover 130 having a venting channel communicating with the atmosphere, such as... Figure 2 As shown. Furthermore, a drain pipe 140 is provided at the lower part 112 of the reservoir body 110 of the reservoir 100, through which liquid contained in the reservoir 100 can be discharged. The lower part 112 of the reservoir body 110 can be fixed to a target location, for example, by bolts. When the reservoir 100 is used as a brake fluid reservoir in an automotive braking system, the brake fluid contained in the reservoir can be supplied to the automotive braking system via the drain pipe 140. If necessary, the brake fluid reservoir may also have an additional drain pipe 140 for supplying brake fluid to the clutch system.

[0028] from Figures 3 to 5As clearly seen, a tubular channel 150 is provided inside the tank 110. The tubular channel 150 has a first end 151 and a closed second end 152. The first end 151 of the tubular channel 150 is connected to the outlet pipe 140 and maintains fluid communication. The tubular channel 150 has a through opening 153 near the filling port 120, ensuring that the tubular channel 150 and the liquid inside the tank 110 are always in fluid communication. It should be noted that the tubular channel design of the liquid storage tank in this application allows for rapid extraction of brake fluid from the outlet pipe during braking, thus preventing air from being drawn in during brake fluid extraction and affecting the braking effect of the braking system.

[0029] In other optional embodiments, in conjunction with the above embodiments, the bottom of the tank body 110 can be integrally formed with the tubular channel 150, such as... Figure 5 As shown. As an alternative, the bottom plane of the tank 110 and the axis of the tubular channel 150 can form a certain angle, for example, the angle range is between 0-30°.

[0030] Also refer to Figure 3 and Figure 4 The number of liquid outlet pipes 140 is at least two. The first end 151 of the tubular channel 150 is connected to the liquid outlet pipe 140 that is furthest from the filling port 120 among the at least two liquid outlet pipes 140 and maintains fluid communication. Furthermore, a partition 160 is provided inside the tank body 110 to space each of the at least two liquid outlet pipes 140 from each other. In addition, the partition 160 can also serve as a reinforcing rib, and the partition 160 can be integrally formed with the lower part 112 of the tank body 110.

[0031] In addition, in such Figure 1 In the illustrated embodiment, the centerline of the upper portion 111 of the tank 110 is designed to be offset from the centerline of the lower portion 112 of the tank 110. To connect the upper portion 111 of the tank 110 with the lower portion 112, an intermediate portion 113 is provided between them. The specific shape of the intermediate portion 113 can be designed according to requirements to effectively avoid other components within the braking system and to make the internal structure of the braking system more compact.

[0032] For cost-saving purposes, the can body 110 can be made of materials such as plastic. Therefore, the can body 110 can be injection molded. After injection molding, the second end 152 of the tubular channel 150 can extend outward from the side wall of the can body 110 and be sealed by welding. For example, the tubular channel 150 has a square or circular cross-sectional shape. As another example, the opening 153 has a square or circular cross-sectional shape.

[0033] In addition, this application also provides a braking system equipped with the aforementioned reservoir 100. The braking system further includes a master cylinder (not shown), which is connected to the reservoir 100 via the outlet pipe 140. The technical improvements and beneficial effects of this braking system are the same as those of the reservoir, therefore, a detailed description of the braking system is not provided here.

[0034] In addition, this application also provides a vehicle. The vehicle is equipped with the aforementioned braking system. The vehicle can be any type of vehicle, such as a private car, taxi, bus, minibus, or coach.

[0035] The above examples illustrate several specific embodiments to explain in detail the liquid storage tank, braking system, and vehicle of this application. These examples are only for illustrating the principles and implementation methods of this application and are not intended to limit the application. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and scope of this application. Therefore, all equivalent technical solutions should fall within the scope of this application and be defined by the claims of this application.

Claims

1. A liquid storage tank (100) comprising a tank body (110) defining an interior space and a filler opening (120) located at an upper portion (111) of the tank body (110), the filler opening (120) communicating with the interior space of the tank body (110), a lower portion (112) of the tank body (110) being provided with a liquid outlet pipe (140), characterized in that, A tubular passage (150) is further arranged in the tank body (110), the tubular passage (150) having a first end (151) and a second end (152) closed, the first end (151) of the tubular passage (150) being connected with and keeping fluid communication with the liquid outlet pipe (140), wherein the tubular passage (150) is provided with a through opening (153) at a portion close to the filling port (120).

2. The liquid storage tank of claim 1, wherein, The bottom of the tank body (110) is integrally formed with the tubular passage (150); and / or The angle between the plane where the bottom of the tank body (110) is located and the axis of the tubular passage (150) ranges between 0-30°.

3. The liquid storage tank of claim 2, wherein, The number of the liquid outlet pipes (140) is at least two, the first end (151) of the tubular passage (150) being connected with and keeping fluid communication with the liquid outlet pipe (140) farthest from the filling port (120) among the at least two liquid outlet pipes (140).

4. The liquid storage tank of claim 3, wherein, The inside of the tank body (110) is provided with a partition plate (160) for spacing each of the at least two liquid outlet pipes (140).

5. The liquid storage tank of claim 4, wherein, The lower part (112) of the tank body (110) is integrally formed with the partition plate (160).

6. The liquid storage tank of any one of claims 1-3, wherein, The center line of the upper part (111) of the tank body (110) is arranged offset from the center line of the lower part (112) of the tank body (110).

7. The liquid storage tank of any one of claims 1-3, wherein, The second end (152) of the tubular passage (150) extends outward from the side wall of the tank body (110) and is closed by welding; and / or The tank body (110) is made of plastic; and / or The tubular passage (150) has a square or circular cross-sectional shape; and / or The opening (153) has a square or circular cross-sectional shape.

8. The liquid storage tank of any one of claims 1-3, wherein, The lower part (112) of the tank body (110) is fixed at a target position by bolts.

9. A brake system characterized by, The brake system is provided with the liquid storage tank (100) according to any one of claims 1-8, wherein the brake system further comprises a brake master cylinder connected with the liquid storage tank (100) through the liquid outlet pipe (140).

10. A vehicle characterized by comprising: The vehicle is configured with the brake system according to claim 9.