Brake liquid storage tank, brake system and vehicle

Abstract

The utility model relates to the technical field of brake liquid storage tanks, in particular to a brake liquid storage tank, a brake system and a vehicle, the brake liquid storage tank comprises a liquid storage body and a sealing assembly, the liquid storage body is provided with a storage cavity, the lower end of the liquid storage body is provided with a liquid outlet part, the liquid outlet part is provided with a liquid outlet flow channel penetrating through the liquid outlet part, and the liquid outlet flow channel is communicated with the storage cavity; the sealing assembly comprises a first sealing piece and a second sealing piece, the first sealing piece is arranged at the lower end of the liquid outlet flow channel, the first sealing piece is provided with a through hole penetrating through the first sealing piece, at least part of the second sealing piece is located in the liquid outlet flow channel, and the second sealing piece comprises an opening position far away from the first sealing piece and a blocking position abutting against the first sealing piece; according to the brake liquid storage tank, when the brake liquid storage tank is not connected with the brake master cylinder, the liquid outlet of the brake liquid storage tank can be automatically sealed, and the reliability of the brake liquid storage tank is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of brake fluid storage tanks, in particular to a brake fluid storage tank, a brake system and a vehicle. Background Art

[0002] The brake fluid reservoir is a container for storing brake fluid. The brake fluid reservoir is connected to the brake master cylinder to provide brake fluid. The brake fluid reservoir is in the hydraulic circuit, so the cleanliness of the brake fluid reservoir is very high. The brake fluid reservoir in the related art is connected to the brake master cylinder to achieve interface sealing, but when the brake fluid reservoir is not connected to the brake master cylinder, the fluid outlet of the brake fluid reservoir is connected to the outside, resulting in the outflow of brake fluid and / or foreign impurities entering the brake fluid reservoir, which reduces the reliability of the brake fluid reservoir. Utility Model Content

[0003] To this end, an embodiment of the utility model provides a brake fluid reservoir, which can automatically seal the fluid outlet of the brake fluid reservoir when the brake fluid reservoir is not connected to the brake master cylinder, thereby improving the reliability of the brake fluid reservoir.

[0004] The embodiment of the utility model also provides a braking system.

[0005] The embodiment of the utility model also provides a vehicle.

[0006] The brake fluid reservoir of the utility model embodiment includes: a fluid storage body, the fluid storage body has a storage cavity, the lower end of the fluid storage body has a liquid outlet, the liquid outlet has a liquid outlet channel penetrating the liquid outlet, the liquid outlet channel is connected to the storage cavity; a sealing assembly, the sealing assembly includes a first seal and a second seal, the first seal is arranged at the lower end of the liquid outlet channel, the first seal has a through hole penetrating the first seal, at least part of the second seal is located in the liquid outlet channel, the second seal includes an open position away from the first seal, and a blocked position abutting the first seal.

[0007] The brake fluid reservoir of the utility model embodiment is provided with a first seal at the lower end of the liquid outlet flow channel, and at least a part of the second seal is provided in the liquid outlet flow channel. The second seal can move relative to the first seal and the liquid outlet along the flow direction of the liquid outlet flow channel to approach and move away from the first seal, and open the first seal when the second seal moves away from the first seal, and block the first seal when the second seal approaches the first seal and abuts against the first seal. The position of the second seal is adjusted to open and block the liquid outlet, so that when the brake fluid reservoir is not connected to the brake master cylinder, the second seal abuts against the first seal to block the liquid outlet, thereby improving the reliability of the brake fluid reservoir.

[0008] In some embodiments, the second sealing member includes a main body, a guide portion and at least one extension portion, one end of the main body is at least partially located in the liquid outlet channel and connected to the guide portion, one end of the extension portion is connected to the outer peripheral surface of the guide portion, the extension portion extends in a direction close to the inner wall surface of the liquid outlet portion, the extension portion is located between the guide portion and the inner wall surface of the liquid outlet portion, and the outer peripheral surface of the extension portion is in sliding sealing contact with the inner wall surface of the liquid outlet portion.

[0009] In some embodiments, there is a preset distance between the outer circumferential surface of the guide portion and the inner wall surface of the liquid outlet portion to facilitate the passage of fluid, and the guide portion includes a first guide section and a second guide section connected in sequence, and in the flow direction of the fluid, the first guide section is located upstream of the second guide section, and the extension portion is radially protrudingly arranged on the outer circumferential surface of the first guide section.

[0010] In some embodiments, the outer peripheral surface of the extension portion is in sliding sealing contact with the inner wall surface of the liquid outlet portion, and a circulation channel is formed between the guide portion, the extension portion and the inner wall surface of the liquid outlet portion. The circulation channel can be connected to the through hole, and the extension portion includes an axial second end face, and the second end face can axially abut the first sealing member to form a first sealing surface to block the circulation channel.

[0011] In some embodiments, at least a portion of the first sealing member extends into the liquid outlet channel, and the hole wall of the through hole of the first sealing member can abut against the outer peripheral surface of the second guide section to form a second sealing surface to seal the through hole.

[0012] In some embodiments, one end of the body is connected to the second guide section, and the other end of the body passes through the through hole and extends out of the liquid outlet, and a gap is provided between the body and the hole wall of the through hole.

[0013] In some embodiments, the brake fluid reservoir further includes an elastic member disposed in the liquid outlet channel, one end of the elastic member abuts against an end of the liquid outlet portion away from the first seal, and the other end of the elastic member abuts against the second seal.

[0014] In some embodiments, the brake fluid reservoir further includes a limiter, the limiter is disposed in the liquid outlet channel, and the limiter is disposed at an upper end of the liquid outlet channel, and one end of the elastic member abuts against the limiter.

[0015] The braking system of an embodiment of the utility model includes: a brake fluid reservoir, which includes the brake fluid reservoir described in the above embodiment, and has a plurality of liquid outlets, which are arranged at intervals; a brake master cylinder, which is connected to the brake fluid reservoir, and one end of the second seal is abutted against the brake master cylinder.

[0016] The braking system of the embodiment of the utility model is provided with a first seal at the lower end of the liquid outlet channel, and at least a part of the second seal is provided in the liquid outlet channel. The second seal can move relative to the first seal and the liquid outlet along the flow direction of the liquid outlet channel to approach and move away from the first seal, and open the first seal when the second seal moves away from the first seal, and block the first seal when the second seal approaches the first seal and abuts against the first seal. The position of the second seal is adjusted to open and block the liquid outlet, so that when the brake fluid reservoir is not connected to the brake master cylinder, the second seal abuts against the first seal to block the liquid outlet, thereby improving the reliability of the brake fluid reservoir and further improving the performance of the braking system.

[0017] The vehicle of the embodiment of the utility model includes a braking system, which is the braking system described in the above embodiment; a control system, which is connected to the braking system and is used to receive signals from the braking system to control the braking of the vehicle.

[0018] The vehicle of the embodiment of the utility model is provided with a first seal at the lower end of the liquid outlet channel, and at least a part of the second seal is provided in the liquid outlet channel. The second seal can move relative to the first seal and the liquid outlet along the flow direction of the liquid outlet channel to approach and move away from the first seal, and open the first seal when the second seal moves away from the first seal, and block the first seal when the second seal approaches the first seal and abuts against the first seal. The position of the second seal is adjusted to open and block the liquid outlet, so that when the brake fluid reservoir is not connected to the brake master cylinder, the second seal abuts against the first seal to block the liquid outlet, thereby improving the reliability of the brake fluid reservoir and thus improving the performance of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a brake fluid reservoir according to an embodiment of the utility model.

[0020] Figure 2 It is a schematic diagram of the brake fluid reservoir of an embodiment of the utility model from another perspective.

[0021] Figure 3 It is a schematic diagram of the second sealing member of an embodiment of the utility model.

[0022] Figure 4It is a schematic diagram of the second sealing member in the sealing position according to the embodiment of the utility model.

[0023] Figure 5 It is a schematic diagram of the second sealing member in the open position according to the embodiment of the utility model.

[0024] Reference numerals:

[0025] Brake master cylinder 100,

[0026] Liquid storage body 1, liquid outlet 11, liquid outlet channel 111, liquid inlet 12, storage chamber 13,

[0027] Sealing assembly 2, first sealing member 21, through hole 211,

[0028] The second sealing member 22, the guide portion 221, the first guide section 2211, the second guide section 2212,

[0029] Extension portion 222, first end surface 2221, second end surface 2222, body 223,

[0030] Elastic part 3, limiting part 4. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0032] The brake fluid reservoir of the embodiment of the utility model comprises a fluid reservoir body 1 and a sealing assembly 2. The fluid reservoir body 1 has a storage chamber 13, and the lower end of the fluid reservoir body 1 has a fluid outlet 11, and the fluid outlet 11 has a fluid outlet channel 111 penetrating the fluid outlet 11, and the fluid outlet channel 111 is in communication with the storage chamber 13. The sealing assembly 2 comprises a first sealing member 21 and a second sealing member 22, wherein the first sealing member 21 is disposed at the lower end of the fluid outlet channel 111, the first sealing member 21 has a through hole 211 penetrating the first sealing member 21, and at least part of the second sealing member 22 is located in the fluid outlet channel 111, and the second sealing member 22 comprises an open position away from the first sealing member 21, and a blocked position abutting against the first sealing member 21.

[0033] It should be noted that there are two situations in which the brake fluid reservoir is not connected to the brake master cylinder 100. The first situation is before the brake fluid reservoir is assembled with the brake master cylinder 100. For example, during the transportation of the brake fluid reservoir, the fluid outlet of the brake fluid reservoir is connected to the outside world, and foreign impurities can enter the brake fluid reservoir from the fluid outlet, affecting the cleanliness of the brake fluid reservoir and further affecting the pressure building of the hydraulic circuit. The second situation is that after the brake fluid reservoir is assembled with the brake master cylinder 100 through a spring latch or screw, when it is violently impacted by external force, the brake fluid reservoir is separated from the brake master cylinder 100, and the brake fluid in the brake fluid reservoir will flow out from the fluid outlet, causing environmental pollution. At the same time, the leaked brake fluid also poses a risk of secondary damage.

[0034] Specifically, Figure 1 and Figure 2 As shown, the reservoir body 1 has a liquid inlet 12, which is located at the upper end of the reservoir body 1 and communicated with a storage chamber 13, and the storage chamber 13 is used to store brake fluid, and the liquid outlet 11 is located at the lower end of the reservoir body 1 and communicated with the storage chamber 13. The reservoir body 1 is connected to the brake master cylinder 100, and the reservoir body 1 is used to store brake fluid. The brake fluid enters the storage chamber 13 through the liquid inlet 12, and flows to the brake master cylinder 100 through the liquid outlet 11, so as to provide brake fluid to the entire hydraulic circuit.

[0035] The first seal 21 is connected to the lower end of the liquid outlet 11, at least part of the second seal 22 is located in the liquid outlet channel 111, and the second seal 22 is located above the first seal 21. The outer peripheral surface of the second seal 22 is slidably connected to the inner wall surface of the liquid outlet 11, so that the second seal 22 can move in the up and down direction relative to the liquid outlet 11 and the first seal 21 to approach and move away from the first seal 21. When the second seal 22 is in the open position, the second seal 22 moves upward relative to the first seal 21 and the liquid outlet 11, so that there is a gap between the second seal 22 and the first seal 21, and the fluid flows out of the through hole of the first seal 21. When the second seal 22 is in the blocking position, the second seal 22 moves downward relative to the first seal 21 and the liquid outlet 11, so that the lower end surface of the second seal 22 abuts against the upper end surface of the first seal 21 to form a seal, thereby blocking the liquid outlet 11.

[0036] For example, the first sealing member 21 and the liquid outlet portion 11 are in interference connection.

[0037] The brake fluid reservoir of the embodiment of the utility model is provided with a sealing assembly 2 at the liquid outlet 11, and a first sealing member 21 is provided at the lower end of the liquid outlet 11 to limit the second sealing member 22, so that the second sealing member 22 can only move in the up and down directions in the liquid outlet 11. When the brake fluid reservoir is connected to the brake master cylinder 100, the second sealing member 22 is in an open position, and the second sealing member 22 moves upward away from the first sealing member 21 to open the liquid outlet 11, and the brake fluid flows out of the liquid outlet 11 to the brake master cylinder 100. Before the brake reservoir is assembled with the brake master cylinder 100, or when the brake reservoir is separated from the brake master cylinder 100 after being assembled, the second seal 22 is in a blocking position, and the second seal 22 moves downward to approach the first seal 21. The second seal 22 is sealed to the first seal 21 to block the liquid outlet 11 of the brake reservoir. On the one hand, before the brake reservoir is assembled with the brake master cylinder 100, foreign matter can be prevented from entering the brake reservoir, thereby improving the cleanliness of the brake reservoir. On the other hand, when the brake reservoir is separated from the brake master cylinder 100 after being assembled, the brake fluid in the brake reservoir can be prevented from flowing out, thereby improving the reliability of the brake reservoir.

[0038] In the embodiment of the utility model, a first seal 21 is arranged at the lower end of the liquid outlet channel 111, and at least a part of the second seal 22 is arranged in the liquid outlet channel 111. The second seal 22 can move relative to the first seal 21 and the liquid outlet portion 11 along the flow direction of the liquid outlet channel 111 to approach and move away from the first seal 21, and open the first seal 21 when the second seal 22 moves away from the first seal 21, and block the first seal 21 when the second seal 22 approaches the first seal 21 and abuts against the first seal 21. The position of the second seal 22 is adjusted to open and block the liquid outlet portion 11, so that when the brake fluid reservoir is not connected to the brake master cylinder 100, the second seal 22 abuts against the first seal 21 to block the liquid outlet portion 11, thereby improving the reliability of the brake fluid reservoir.

[0039] In some embodiments, the second sealing member 22 includes a main body, a guide portion 221 and at least one extension portion 222, one end of the main body is at least partially located in the liquid outlet channel 111 and is connected to the guide portion 221, one end of the extension portion 222 is connected to the outer peripheral surface of the guide portion 221, the extension portion 222 extends in a direction close to the inner wall surface of the liquid outlet portion 11, the extension portion 222 is located between the guide portion 221 and the inner wall surface of the liquid outlet portion 11, and the outer peripheral surface of the extension portion 222 is in sliding sealing contact with the inner wall surface of the liquid outlet portion 11.

[0040] Specifically, Figure 3-Figure 5As shown, the guide portion 221 is arranged in the liquid outlet channel 111, the upper end of the main body extends into the liquid outlet channel 111 and is connected to the lower end of the guide portion 221, one end of the extension portion 222 is connected to the outer circumferential surface of the guide portion 221, and the extension portion extends in the radial direction so that the outer circumferential surface of the extension portion 222 is in sliding and sealing contact with the inner wall surface of the liquid outlet portion 11, and the circumferential dimension of the extension portion 222 is smaller than the circumferential dimension of the guide portion 221.

[0041] In the embodiment of the utility model, an extension portion 222 is provided on the outer peripheral surface of the guide portion 221, and a seal is formed between the lower end surface of the extension portion 222 and the upper end surface of the first sealing member 21, so that when the second sealing member 22 is in the open position, the brake fluid flows out through the gap between the outer peripheral surface of the guide portion 221 and the inner wall surface of the liquid outlet portion 11.

[0042] For example, there are multiple extending portions 222 , and the multiple extending portions 222 are evenly spaced in the circumferential direction of the guide portion 221 , thereby improving the stability of the brake fluid.

[0043] In some embodiments, there is a preset distance between the outer peripheral surface of the guide portion 221 and the inner wall surface of the liquid outlet portion 11 to facilitate the passage of fluid, and the guide portion 221 includes a first guide segment 2211 and a second guide segment 2212 connected in sequence. In the flow direction of the fluid, the first guide segment 2211 is located upstream of the second guide segment 2212, and the extension portion 222 is radially protrudingly arranged on the outer peripheral surface of the first guide segment 2211.

[0044] Specifically, Figure 3-Figure 5 As shown, the first guide section 2211 and the second guide section 2212 are arranged in sequence in the up-down direction, and the first guide section 2211 is located above the second guide section 2212, and the extension portion 222 is provided on the first guide section 2211, that is, the dimension of the extension portion 222 in the up-down direction is smaller than the dimension of the guide portion 221 in the up-down direction, so that when the second sealing member 22 is in the open position, the brake fluid flows through the first guide section 2211 and the second guide section 2212 in sequence.

[0045] In this embodiment, a preset distance is set between the outer peripheral surface of the guide portion 221 and the inner wall surface of the liquid outlet portion 11 to avoid the distance between the outer peripheral surface of the guide portion 221 and the inner wall surface of the liquid outlet portion 11 being too small, resulting in blockage of the brake fluid and difficulty in passing through. The preset distance is set to ensure that the brake fluid can pass smoothly.

[0046] For example, the first guide segment 2211 and the second guide segment 2212 are integrally formed.

[0047] In some embodiments, the outer peripheral surface of the extension portion 222 is in sliding sealing contact with the inner wall surface of the liquid outlet portion 11, and a flow channel is formed between the guide portion 221, the extension portion 222 and the inner wall surface of the liquid outlet portion 11. The flow channel can be connected to the through hole 211. The extension portion 222 includes an axial second end face 2222, and the second end face 2222 can axially abut the first sealing member 21 to form a first sealing surface to block the flow channel.

[0048] Specifically, Figure 3 As shown, the extension portion 222 includes first end faces 2221 arranged at intervals in the up and down directions, the first end face 2221 is located above the second end face 2222, when the second seal 22 is in the blocking position, the second end face 2222 is in sealing contact with the upper end face of the first seal 21 to form a first sealing surface, the first end face 2221 and the outer peripheral surface of the first guide section 2211 are filled with brake fluid, when the second seal 22 moves upward, the second end face 2222 is first separated from the first seal 21 to allow the brake fluid to flow to the second guide section 2212.

[0049] In some embodiments, at least a portion of the first sealing member 21 extends into the liquid outlet channel 111 , and the hole wall of the through hole 211 of the first sealing member 21 can abut against the outer peripheral surface of the second guide section 2212 to form a second sealing surface to block the through hole 211 .

[0050] Specifically, Figure 4 As shown, the upper end of the first sealing member 21 at least partially extends into the liquid outlet 11. When the second sealing member 22 is in the blocking position, the first sealing member 21 is sleeved on the second guide section 2212 and in sealing contact with the second guide section 2212 to form a second sealing surface.

[0051] like Figure 4 As shown, the second sealing member 22 is in the blocking position, and foreign matter can only reach the lower end surface of the second guide section 2212, but cannot reach the outer peripheral surface of the second guide section 2212. Figure 4 The path A shown in FIG. 1 is a path A shown in FIG. 1 , and the brake fluid in the brake reservoir can only flow to the first end surface 2221 and the outer peripheral surface of the first guide section 2211, and cannot reach the outer peripheral surface of the second guide section 2212. Figure 4 Path B shown realizes the sealing function of the brake fluid reservoir, thereby improving the cleanliness of the brake fluid reservoir.

[0052] like Figure 5 As shown, the second sealing member 22 is in the open position, the second end surface 2222 is separated from the upper end surface of the first sealing member 21, and the second guide section 2212 is separated from the inner wall surface of the first sealing member 21, and the brake fluid in the brake reservoir flows through the first guide section 2211, the second guide section 2212 and the through hole 211 in sequence and then flows out, as shown in FIG. Figure 5The path C shown realizes the communication between the brake reservoir and the brake master cylinder 100 , ensuring that the brake reservoir supplies brake fluid to the brake master cylinder 100 .

[0053] In this embodiment, a sealed connection between the first seal 21 and the second seal 22 is achieved through a first sealing surface formed between the second end surface 2222 and the upper end surface of the first seal 21 and a second sealing surface formed between the second guide section 2212 and the inner wall surface of the first seal 21, and the sealing assembly 2 has a simple structure.

[0054] For example, a sealing ring or other forms of sealing components may be provided between the first sealing member 21 and the second sealing member 22 to ensure the sealing between the first sealing member 21 and the second sealing member 22 .

[0055] In some embodiments, one end of the body is connected to the second guide section 2212 , and the other end of the body passes through the through hole 211 and extends out of the liquid outlet 11 , and there is a gap between the body and the hole wall of the through hole 211 .

[0056] Specifically, the upper end of the main body 223 is connected to the lower end of the second guide section 2212, and the lower end of the main body 223 passes through the through hole 211 of the first seal 21 and extends out of the liquid outlet 11, so that when the brake fluid reservoir is connected to the brake master cylinder 100, the lower end of the main body 223 abuts against the inner wall surface of the brake master cylinder 100, thereby making the second seal 22 in an open position, and the brake fluid reservoir supplies brake fluid to the brake master cylinder 100.

[0057] Optionally, there is a gap between the outer circumference of the body 223 and the wall of the through hole 211 , so that when the second sealing member 22 is in the open position, the brake fluid flows out through the gap between the outer circumference of the body 223 and the wall of the through hole 211 .

[0058] In some embodiments, the brake fluid reservoir further includes an elastic member 3 , which is disposed in the liquid outlet channel 111 , one end of the elastic member 3 abuts against an end of the liquid outlet portion 11 away from the first seal 21 , and the other end of the elastic member 3 abuts against the second seal 22 .

[0059] Specifically, Figure 4 and Figure 5 As shown, the upper end of the elastic member 3 abuts against the upper end of the liquid outlet portion 11, and the lower end of the elastic member 3 abuts against the first end face 2221 of the extension portion 222. The second sealing member 22 is in sealing contact with the first sealing member 21 under the action of the elastic member 3. By setting the elastic member 3, the initial state of the sealing assembly 2 is a sealed state, thereby realizing the self-sealing of the brake fluid reservoir.

[0060] Optionally, when the brake fluid reservoir is connected to the brake master cylinder 100, the lower end of the main body 223 abuts against the inner wall surface of the brake master cylinder 100, and the main body 223 is subjected to an upward force to compress the elastic part 3. The main body 223 pushes the second sealing member 22 to move upward to open the liquid outlet 11, and the brake fluid flows along the path C to the brake master cylinder 100. Before the brake fluid reservoir is connected to the brake master cylinder 100 or when the brake fluid reservoir is connected to the brake master cylinder 100 and then separated, the second sealing member 22 is only subjected to the downward force of the elastic member 3, thereby realizing self-sealing of the brake fluid reservoir.

[0061] Compared with the related art in which, when disassembling the brake fluid reservoir, the brake master cylinder 100 needs to be disassembled simultaneously in order to avoid the outflow of brake fluid, the brake fluid reservoir in this embodiment can automatically achieve a self-sealing setting when separated from the brake master cylinder 100, and the brake fluid reservoir can be disassembled separately, thereby reducing maintenance costs and improving the convenience of maintenance.

[0062] In some embodiments, the brake fluid reservoir further includes a limiter 4 , which is disposed in the liquid outlet channel and at the upper end of the liquid outlet channel 111 , and one end of the elastic member 3 abuts against the limiter 4 .

[0063] Specifically, Figure 4 and Figure 5 As shown, one end of the limiting member 4 is connected to the inner wall surface of the liquid outlet portion 11 . In this embodiment, the elastic member 3 is limited by the setting of the limiting member 4 , thereby improving the connection reliability between the elastic member 3 and the liquid outlet portion 11 .

[0064] The brake system of the embodiment of the utility model comprises a brake reservoir and a brake master cylinder 100. The brake reservoir comprises a brake reservoir of any of the above embodiments having a plurality of liquid outlets 11, and the plurality of liquid outlets 11 are arranged at intervals. The brake master cylinder 100 is connected to the brake reservoir, and one end of the second sealing member 22 abuts against the brake master cylinder 100.

[0065] There are multiple liquid outlets 11 , which are spaced apart in the left-right direction, and each liquid outlet 11 is provided with a sealing assembly 2 . The specific number of the liquid outlets 11 is specifically set according to the form of the brake master cylinder 100 .

[0066] The braking system of the embodiment of the utility model is provided with a first seal 21 at the lower end of the liquid outlet channel 111, and at least a part of the second seal 22 is provided in the liquid outlet channel 111. The second seal 22 can move relative to the first seal 21 and the liquid outlet portion 11 along the flow direction of the liquid outlet channel 111 to approach and move away from the first seal 21, and open the first seal 21 when the second seal 22 moves away from the first seal 21, and block the first seal 21 when the second seal 22 approaches the first seal 21 and abuts against the first seal 21. The position of the second seal 22 is adjusted to open and block the liquid outlet portion 11, so that when the brake fluid reservoir is not connected to the brake master cylinder 100, the second seal 22 abuts against the first seal 21 to block the liquid outlet portion 11, thereby improving the reliability of the brake fluid reservoir.

[0067] The vehicle of the embodiment of the utility model comprises a braking system and a control system. The braking system is the braking system of the above embodiment. The control system is connected to the braking system. The control system is used to receive signals from the braking system to control the braking of the vehicle.

[0068] The vehicle of the embodiment of the utility model is provided with a first seal 21 at the lower end of the liquid outlet channel 111, and at least a part of the second seal 22 is provided in the liquid outlet channel 111. The second seal 22 can move relative to the first seal 21 and the liquid outlet portion 11 along the flow direction of the liquid outlet channel 111 to approach and move away from the first seal 21, and open the first seal 21 when the second seal 22 moves away from the first seal 21, and block the first seal 21 when the second seal 22 approaches the first seal 21 and abuts against the first seal 21. The position of the second seal 22 is adjusted to open and block the liquid outlet portion 11, so that when the brake reservoir is not connected to the brake master cylinder 100, the second seal 22 abuts against the first seal 21 to block the liquid outlet portion 11, thereby improving the reliability of the brake reservoir.

[0069] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0070] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0071] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0073] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0074] It is understandable that the above embodiments are exemplary and cannot be construed as limiting the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A brake fluid reservoir, characterized in that: include: A liquid storage body, wherein the liquid storage body has a storage cavity, and a lower end of the liquid storage body has a liquid outlet, and the liquid outlet has a liquid outlet channel penetrating the liquid outlet, and the liquid outlet channel is connected with the storage cavity; A sealing assembly, the sealing assembly includes a first sealing member and a second sealing member, the first sealing member is arranged at the lower end of the liquid outlet channel, the first sealing member has a through hole penetrating the first sealing member, at least a portion of the second sealing member is located in the liquid outlet channel, and the second sealing member includes an open position away from the first sealing member, and a blocked position abutting the first sealing member.

2. The brake fluid reservoir according to claim 1, characterized in that: The second sealing member includes a main body, a guide portion and at least one extension portion, one end of the main body is at least partially located in the liquid outlet channel and connected to the guide portion, one end of the extension portion is connected to the outer peripheral surface of the guide portion, the extension portion extends in a direction close to the inner wall surface of the liquid outlet portion, the extension portion is located between the guide portion and the inner wall surface of the liquid outlet portion, and the outer peripheral surface of the extension portion is in sliding sealing contact with the inner wall surface of the liquid outlet portion.

3. The brake fluid reservoir according to claim 2, characterized in that: There is a preset distance between the outer circumferential surface of the guide portion and the inner wall surface of the liquid outlet portion to facilitate the passage of fluid. The guide portion includes a first guide segment and a second guide segment connected in sequence. In the flow direction of the fluid, the first guide segment is located upstream of the second guide segment, and the extension portion is radially protrudingly arranged on the outer circumferential surface of the first guide segment.

4. The brake fluid reservoir according to claim 3, characterized in that: The outer peripheral surface of the extension portion is in sliding sealing contact with the inner wall surface of the liquid outlet portion, and a circulation channel is formed between the guide portion, the extension portion and the inner wall surface of the liquid outlet portion. The circulation channel can be connected to the through hole. The extension portion includes an axial second end surface, and the second end surface can axially abut the first sealing member to form a first sealing surface to block the circulation channel.

5. The brake fluid reservoir according to claim 4, characterized in that: At least a portion of the first sealing member extends into the liquid outlet channel, and the hole wall of the through hole of the first sealing member can abut against the outer peripheral surface of the second guide section to form a second sealing surface to block the through hole.

6. The brake fluid reservoir according to claim 3, characterized in that: One end of the body is connected to the second guide section, and the other end of the body passes through the through hole and extends out of the liquid outlet portion, and a gap is provided between the body and the hole wall of the through hole.

7. The brake fluid reservoir according to any one of claims 1 to 6, characterized in that: It also includes an elastic member, which is arranged in the liquid outlet channel, one end of the elastic member abuts against an end of the liquid outlet portion away from the first sealing member, and the other end of the elastic member abuts against the second sealing member.

8. The brake fluid reservoir according to claim 7, characterized in that: It also includes a limiting member, which is arranged in the liquid outlet channel and at the upper end of the liquid outlet channel, and one end of the elastic member abuts against the limiting member.

9. A braking system, characterized in that: include: A brake fluid reservoir, wherein the brake fluid reservoir is the brake fluid reservoir according to any one of claims 1 to 8, and the brake fluid reservoir has a plurality of fluid outlets, and the plurality of fluid outlets are arranged at intervals; A brake master cylinder is connected to the brake fluid reservoir, and one end of the second sealing member abuts against the brake master cylinder.

10. A vehicle, characterized in that: include: A braking system, wherein the braking system is the braking system according to claim 9; A control system is connected to the braking system, and is used to receive signals from the braking system to control the braking of the vehicle.

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