Brake system and vehicle with same

Abstract

The utility model discloses a braking system and a vehicle with the same, and relates to the field of vehicle engineering. The braking system comprises a valve body, the valve body is provided with an oil passing channel, one end of the oil passing channel is an assembling opening, and the inner circumferential face of the oil passing channel comprises a step face facing the assembling opening; the liquid storage tank is provided with an oil outlet connector, and the oil outlet connector is located in the assembly opening; the filtering piece is located in the oil passing channel and arranged between the step face and the oil outlet connector, the filtering piece comprises a retaining ring, the retaining ring is annular, and the outer circumferential face of the retaining ring makes contact with the inner circumferential face of the oil passing channel for sealing; the filter screen is arranged on the retaining ring; the first supporting column is connected to the side, facing the assembling opening, of the retaining ring so as to abut against the oil outlet connector in the shaking process. The brake system is high in filtering reliability, and the service life of the brake system can be guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle engineering, in particular to a brake system and a vehicle with the same. BACKGROUND

[0002] In the brake system, a filter screen is arranged at the interface between the reservoir and the valve body to filter out impurities in the brake fluid.

[0003] In the filter screen fitting structure of the general brake system, the filter screen is pressed into the valve body by the oil outlet joint of the reservoir to ensure that the filter screen does not come out. However, if the reservoir is installed at an angle relative to the valve body during installation, the filter screen will be pressed at an angle, causing the filter screen to deform and making it difficult for the filter screen to completely fit the cavity wall of the valve body. At this time, the small gap between the filter screen and the cavity wall of the valve body allows impurities to enter the valve body and cause oil passage blockage. Moreover, the filter screen is always under pressure, and the probability of the filter screen being damaged by pressure after aging is greatly increased. Therefore, the assembly structure of the filter screen needs to be improved. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides a brake system and a vehicle with the same to improve the reliability of brake fluid filtration and prolong the service life.

[0005] The brake system according to the present application comprises a valve body, an oil reservoir, and a filter element. The valve body has an oil passage, one end of the oil passage is a fitting port, and the inner circumferential surface of the oil passage includes a stepped surface facing the fitting port. The oil reservoir is provided with an oil outlet joint, and the oil outlet joint is located in the fitting port. The filter element is located in the oil passage and is arranged between the stepped surface and the oil outlet joint. The filter element comprises a retaining ring, an outer circumferential surface of the retaining ring is in contact with the inner circumferential surface of the oil passage to form a seal, a filter screen is arranged on the retaining ring, and a first support column is connected to one side of the retaining ring facing the fitting port to abut against the oil outlet joint during shaking.

[0006] The brake system according to the present application achieves axial positioning by arranging the filter element between the stepped surface and the oil outlet joint. The filter element comprises a retaining ring, the outer circumferential surface of the annular retaining ring is in contact with the inner circumferential surface of the oil passage, which not only achieves radial positioning of the filter element but also forms an annular sealing line or an annular sealing surface, thereby helping to eliminate the gap between the outer circumferential surface of the retaining ring and the inner circumferential surface of the oil passage and ensuring that the brake fluid entering the valve body is filtered by the filter screen, thereby improving the cleanliness of the brake fluid.

[0007] By arranging the first support column on the side of the retaining ring facing the assembly opening, the oil outlet joint does not need to be pressed onto the filter screen when the filter element is limited. In this way, the axial limitation of the filter element can be ensured, and the filter screen is prevented from being in a pressed state, thereby reducing the probability of damage of the filter screen after aging. Moreover, when shaking occurs, the first support column is resisted on the oil outlet joint, the contact area between the two is small, the overall stress of the filter element is small, the deformation is small, the filtering reliability is high, and the service life can be guaranteed.

[0008] In some embodiments, the filter element further comprises: a second support column connected to the side of the retaining ring away from the first support column, the second support column abutting on the stepped surface. In this way, when shaking occurs, the second support column is resisted on the stepped surface, and the filter screen is prevented from impacting the stepped surface. In this way, the filter screen is protected, and the service life of the filter screen is prolonged.

[0009] Specifically, the first support column and the second support column are both a plurality of and are arranged at intervals in the circumferential direction. In this way, the plurality of first support columns are multi-point positioned with the oil outlet joint, and the plurality of second support columns are multi-point positioned with the stepped surface, which can improve the stability of the filter element.

[0010] Alternatively, the second support column and the first support column are arranged one-to-one. In this way, when the axial force acts on the first support column, it can be directly conducted to the second support column, and when the axial force acts on the second support column, it can be directly conducted to the first support column. In this way, it is beneficial to the dispersion and conduction of the axial force, reduces the force acting on the filter screen, and further avoids the deformation of the retaining ring and the damage of the filter screen.

[0011] In some embodiments, the retaining ring, the filter screen, and the first support column are integrally formed. In this way, the assembly process can be reduced, and the production efficiency can be improved.

[0012] In some embodiments, the inner circumferential surface of the oil passage further comprises:

[0013] a first tubular surface, one end of the first tubular surface being the assembly opening;

[0014] a second tubular surface between the first tubular surface and the stepped surface;

[0015] a first chamfer between the first tubular surface and the second tubular surface;

[0016] The side of the retaining ring facing the step surface is provided with a second chamfer, and the second chamfer is in contact with the first chamfer to seal. In this way, the axial positioning of the filter element can be further improved, and double sealing between the outer circumferential surface of the retaining ring and the inner circumferential surface of the oil passage is realized, the sealing performance of the edge of the filter element is further improved, and the reliability of impurity filtration is ensured.

[0017] In some embodiments, the inner circumferential surface of the oil passage further comprises: a centering cone surface connected to the side of the step surface facing the assembly opening, and the diameter of the centering cone surface gradually decreases in the direction facing the step surface.

[0018] In this way, the center of the filter element can be guided to coincide with the axis of the centering cone surface under the guidance of the centering cone surface, which helps to correct the position of the filter element and prevent the filter screen from tilting.

[0019] In some embodiments, the end surface of the first support column and the end surface of the oil outlet joint have a buffer gap. The gap is small, which helps to reduce the pressure between the filter element and the oil outlet joint, reduces the probability that the filter element is pressed and the filter screen is damaged, and reduces the probability of filter screen damage.

[0020] In some embodiments, the brake system further comprises: a sealing ring located in the oil passage and sleeved on the oil outlet joint. In this way, the sealing performance of the edge of the assembly opening can be improved, and leakage of brake fluid from the assembly opening can be avoided, so that more brake fluid flows into the valve body, reducing brake fluid loss.

[0021] The vehicle according to the embodiments of the present application comprises the brake system described in the above embodiments. The brake system improves the reliability of brake fluid filtration and prolongs the filtration effect, which is conducive to improving the brake reliability of the vehicle.

[0022] Additional aspects and advantages of the present application will be given in part in the following description, some of which will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, with reference to the following figures, wherein:

[0024] Figure 1 The structure sectional view of the brake system according to the embodiments of the present application at the cooperation place of the valve body and the liquid storage tank;

[0025] Figure 2 The enlarged structure sectional view of the brake system according to the embodiments of the present application at the cooperation place of the valve body and the liquid storage tank;

[0026] Figure 3A perspective view of a filter according to an embodiment of the present application;

[0027] Figure 4 A vehicle diagram according to an embodiment of the present application.

[0028] Reference signs:

[0029] A brake system 100,

[0030] A valve body 1, an oil passage 10, an assembly opening 11, a stepped surface 12, a first tubular surface 13, a second tubular surface 14, a first chamfer 15, a centering cone surface 16;

[0031] A liquid storage tank 2, an oil outlet joint 21,

[0032] A filter 3,

[0033] A retaining ring 31, a second chamfer 311,

[0034] A filter screen 32,

[0035] A first support column 33,

[0036] A second support column 34,

[0037] A buffer interval 41,

[0038] A sealing ring 5. DETAILED DESCRIPTION

[0039] The embodiments of the present application will be described in detail below with reference to the drawings, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0040] In the description of the present application, it should be understood that the terms "center", "length", "width", "thickness", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the features limited as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0041] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, the term "installation", "link", "connection" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can through the intermediate medium indirectly connect, can be two elements inside the intercommunication. For ordinary skilled in the art, the above-mentioned term can be understood in the utility model with the specific meaning of the specific situation.

[0042] Reference is made below Figures 1-3 The brake system 100 according to the embodiments of the utility model is described.

[0043] The brake system 100 of the vehicle is the device that makes the vehicle in running decelerate or stop, and makes the vehicle that has stopped running keep still. The brake system 100 of the application is hydraulic brake system. For the convenience of understanding, hereinafter, the working principle of the common hydraulic brake system is introduced, so as to facilitate the understanding of the existing principle of the structure of the application.

[0044] When the driver steps on the brake pedal (not shown in the figure), the piston (not shown in the figure) in the valve body 1 moves under the action of the pedal force, so that the brake fluid generates pressure. In some embodiments, the pressure is transmitted to the brake of each wheel through the brake pipeline. In the brake, the brake fluid pressure pushes the brake block or brake shoe to contact the brake disc or brake drum, and generates friction force, so as to make the wheel decelerate or stop rotating. Here, the brake fluid in the valve body 1 is not limited to be used only in braking, and in some schemes, the pedal force can also be obtained by the hydraulic pressure of the brake fluid.

[0045] In the scheme of the application, Figure 1 And Figure 2 The brake system 100 comprises a valve body 1 and a liquid storage tank 2, the valve body 1 has an oil passage 10, and one end of the oil passage 10 is a mounting port 11. The liquid storage tank 2 is provided with an oil outlet joint 21, and the oil outlet joint 21 is located in the mounting port 11.

[0046] Here, the valve body 1 is the control end force bearing body of the brake system 100. In some embodiments, a master cylinder hole is arranged in the valve body 1, and a piston is movably arranged in the master cylinder hole along the length direction of the master cylinder hole, and one end of the master cylinder hole is an opening. The brake system 100 further comprises a push rod (not shown in the figure) and a spring (not shown in the figure), one end of the push rod is connected with the piston through the opening, and the spring is connected with at least one of the push rod or the piston to provide a restoring force to the push rod and the piston. The brake pedal is connected with the push rod, when the user steps on the brake pedal, the brake pedal pushes the push rod, so that the push rod moves into the master cylinder hole, and drives the piston to move into the master cylinder hole. The master cylinder hole is filled with brake fluid, and when the push rod moves to drive the piston to move, the pressure of the brake fluid changes, so as to change the working mode of the brake fluid.

[0047] The reservoir 2 is used for storing brake fluid, and provides brake fluid to the valve body 1. Since the brake fluid in the valve body 1 is transmitted to the brake of each wheel through the brake pipeline, the brake fluid needs to be kept clean to avoid blocking the brake pipeline and the brake.

[0048] To this end, the brake system 100 further comprises a filter 3.

[0049] Specifically, referring to Figure 1 and Figure 2 , the inner circumferential surface of the oil passage 10 comprises a stepped surface 12 facing the assembly opening 11. The filter 3 is located in the oil passage 10 and is arranged between the stepped surface 12 and the oil outlet joint 21.

[0050] The filter 3 comprises a retaining ring 31, a filter screen 32 and a first support column 33. The retaining ring 31 is annular, and the outer circumferential surface of the retaining ring 31 is in contact with the inner circumferential surface of the oil passage 10 to seal. The filter screen 32 is arranged on the retaining ring 31, and the first support column 33 is connected to one side of the retaining ring 31 facing the assembly opening 11 to abut against the oil outlet joint 21 in the shaking.

[0051] According to the brake system 100 of the embodiment of the utility model, by arranging the filter 3 between the stepped surface 12 and the oil outlet joint 21, the axial positioning of the filter 3 is realized. Here, the axial direction of the filter 3 is consistent with the axial direction of the oil outlet joint 21 and the axial direction of the oil passage 10.

[0052] The filter 3 comprises the retaining ring 31, and the outer circumferential surface of the annular retaining ring 31 is in contact with the inner circumferential surface of the oil passage 10, so that the radial positioning of the filter 3 can be realized. Here, the radial direction of the filter 3 is consistent with the radial direction of the oil outlet joint 21 and the radial direction of the oil passage 10.

[0053] By contacting the outer circumferential surface of the annular retaining ring 31 with the inner circumferential surface of the oil passage 10, a ring-shaped sealing line or a ring-shaped sealing surface around the filter 3 can be formed, which is beneficial to eliminate the gap between the outer circumferential surface of the retaining ring 31 and the inner circumferential surface of the oil passage 10, and ensure that the brake fluid entering the valve body 1 is filtered by the filter screen 32, thereby improving the cleanliness of the brake fluid.

[0054] By arranging the first support column 33 on one side of the retaining ring 31 facing the assembly opening 11, the oil outlet joint 21 does not need to press on the filter screen 32 when limiting the filter 3. In this way, the axial positioning of the filter 3 can be ensured, and the filter screen 32 can be prevented from being in a pressed state, thereby reducing the probability of damage of the filter screen after aging. Moreover, when shaking occurs, the first support column 33 is abutted on the oil outlet joint 21, the contact area between them is small, the overall stress of the filter 3 is small, the deformation is small, the filtering reliability is high, and the service life can be guaranteed.

[0055] Thus, the filtering fit structure on the brake system 100 can reduce the deformation of the filter screen 32, reduce the leakage of impurities, reduce the probability of the filter screen 32 being pressed and damaged after aging, and prolong the service life.

[0056] Specifically, as shown in Figures 1-3 The first support column 33 is block-shaped, thereby having certain bearing capacity, guaranteeing its compression strength and bending strength.

[0057] Specifically, the first support column 33 is multiple and is arranged at intervals in the circumferential direction. The multiple first support columns 33 are multi-point positioned with the oil outlet joint 21, thereby avoiding the filter element 3 from being skewed and improving the stability of the filter element 3.

[0058] Further, the retaining ring 31, the filter screen 32, and the first support column 33 are integrally formed. In this way, the assembly process can be reduced, and the production efficiency can be improved. Moreover, the loosening probability among the three is small, and the loosening does not lead to filtering failure.

[0059] In some embodiments, as shown in Figures 1-3 The filter element 3 further includes a second support column 34 connected to the side of the retaining ring 31 away from the first support column 33, and the second support column 34 abuts on the stepped surface 12. Thus, when shaking occurs, the second support column 34 is resisted on the stepped surface 12, and the filter screen 32 is prevented from impacting the stepped surface 12. Thus, the filter screen 32 is protected, and the service life of the filter screen 32 is prolonged.

[0060] Specifically, the second support column 34 is multiple and is arranged at intervals in the circumferential direction. In this way, the multiple second support columns 34 are multi-point positioned with the stepped surface 12, thereby avoiding the filter element 3 from being skewed, and the stability of the filter element 3 can be improved.

[0061] Specifically, the second support column 34 is block-shaped, thereby having certain bearing capacity, guaranteeing its compression strength and bending strength.

[0062] Optionally, the second support column 34 is arranged in one-to-one correspondence with the first support column 33. In this way, when shaking force acts on the first support column 33, the axial force can be directly conducted to the second support column 34, and when the axial force acts on the second support column 34, the axial force can be directly conducted to the first support column 33. Thus, the dispersion and conduction of the axial force are facilitated, the acting force on the filter screen 32 is reduced, and the deformation of the retaining ring 31 and the damage of the filter screen 32 are further avoided.

[0063] Optionally, the retaining ring 31, the filter screen 32, the first support column 33, and the second support column 34 are integrally formed. In this way, the assembly process can be reduced, and the production efficiency can be improved. Moreover, the loosening probability among the four is small, and the loosening does not lead to filtering failure.

[0064] Further, the filter element 3 is an injection molded part, which has high processing efficiency and low cost, and has certain elasticity to achieve the buffering protection effect.

[0065] In some embodiments, referring to Figure 2 , the inner circumferential surface of the oil passing channel 10 further comprises a first tubular surface 13, a second tubular surface 14, and a first chamfer 15. One end of the first tubular surface 13 is the assembly opening 11. The second tubular surface 14 is located between the first tubular surface 13 and the step surface 12. The first chamfer 15 is connected between the first tubular surface 13 and the second tubular surface 14.

[0066] The side of the retaining ring 31 facing the step surface 12 is provided with a second chamfer 311, which is in contact with the first chamfer 15 to seal. In this way, the axial positioning of the filter element 3 can be further improved, and double sealing between the outer circumferential surface of the retaining ring 31 and the inner circumferential surface of the oil passing channel 10 can be achieved, further improving the sealing performance of the edge of the filter element 3 and ensuring the reliability of impurity filtration.

[0067] Specifically, the first chamfer 15 can be a rounded chamfer or a straight chamfer, and the specific angle is not limited. The diameter of the first chamfer 15 is smaller.

[0068] In some embodiments, referring to Figure 2 , the inner circumferential surface of the oil passing channel 10 further comprises a centering taper surface 16 connected to the side of the step surface 12 facing the assembly opening 11. The diameter of the centering taper surface 16 gradually decreases in the direction facing the step surface 12.

[0069] In this way, the center of the filter element 3 can be guided to coincide with the axis of the centering taper surface 16 under the guidance of the centering taper surface 16, which helps to correct the position of the filter element 3 and prevent the filter screen 32 from tilting.

[0070] Further, the outer circumferential surface of the second support column 34 is a circular arc surface, the radius of which is greater than the minimum radius of the centering taper surface 16 and less than the maximum radius of the centering taper surface 16. In this way, the second support column 34 abuts against the centering taper surface 16, which is conducive to automatically returning the filter element 3 to the center, so that the axis of the filter element 3 coincides with the axis of the centering taper surface 16. This is conducive to the outer circumferential surface of the retaining ring 31 being in contact with the inner circumferential surface of the oil passing channel 10 to seal.

[0071] In some embodiments, the first support column 33 has a buffer gap 41 between the end surface of the first support column 33 and the end surface of the oil outlet connector 21. The gap is small, which helps to reduce the pressure between the filter element 3 and the oil outlet connector 21, reduces the probability of the filter element 3 being pressed and the filter screen 32 being damaged, and reduces the probability of the filter screen 32 being damaged. Especially when the filter element 3 is aging, it is not under pressure, so the filter element 3 is less damaged and can still play a filtering role.

[0072] In addition, the small buffer gap 41 can prevent the filter element 3 from moving too much due to bumps and the like, and avoid impact noise. When the filter element 3 is tilted, the end surface of the first support column 33 contacts the end surface of the oil outlet joint 21 to right the filter element 3.

[0073] In some embodiments, with reference to Figure 1 and Figure 2 The brake system 100 further comprises a sealing ring 5 located in the oil passage 10 and sleeved on the oil outlet joint 21. This can improve the sealing of the edge of the assembly opening 11, prevent brake fluid from leaking from the assembly opening 11, and allow more brake fluid to flow into the valve body 1, reducing brake fluid loss.

[0074] Specifically, the inner side lip of the sealing ring 5 is in interference fit with the outer peripheral surface of the oil outlet joint 21 to achieve the inner side sealing requirement.

[0075] Specifically, the outer side lip of the sealing ring 5 is in interference fit with the inner peripheral surface of the oil passage 10 to achieve the outer side sealing requirement.

[0076] In this way, the gap through which brake fluid leaks from the reservoir 2 into the valve body 1 and then leaks out of the assembly opening 11 on the valve body 1 is completely sealed, and brake fluid can only flow into the valve body 1 through the filter screen 32 on the filter element 3.

[0077] Specifically, the outer peripheral surface of the retaining ring 31 is in complete fit with the first tubular surface 13, and the second chamfer 311 on the retaining ring 31 is in complete fit with the first chamfer 15 between the first tubular surface 13 and the second tubular surface 14, together forming two anti-leakage sealing rings.

[0078] Here, the outer peripheral surface of the retaining ring 31 is provided with chamfers at both axial ends, and the chamfer in complete fit with the first chamfer 15 is the second chamfer 311. The chamfer can reduce the burrs at the edges of the outer peripheral surface of the retaining ring 31, and facilitate the outer peripheral surface of the retaining ring 31 to be more closely connected with the inner peripheral surface of the oil passage 10 when cooperating with the inner peripheral surface of the oil passage 10, which is conducive to maintaining the overall filtering effect.

[0079] The outer peripheral surface of the retaining ring 31 is in complete fit with the first tubular surface 13, the end surface of the second support column 34 is in large-area contact with the stepped surface 12, and the centering conical surface 16 limits the position of the filter element 3 in the radial direction, so that the three groups of cooperation simultaneously correct the position of the filter element 3 in the valve body 1, preventing the filter element 3 from tilting.

[0080] In contrast to the conventional filter screen which needs to be pressed by the reservoir oil outlet, the pressing causes the filter screen to deform, causing the brake fluid to flow into the valve body from the local gap without being filtered by the filter screen, resulting in blockage. The structure provided by the present utility model, the oil outlet joint 21 of the reservoir 2 does not directly contact the filter screen 32, and the filter screen 32 will not deform.

[0081] According to the vehicle of the embodiment of the present application, refer to Figure 4 , including the brake system 100 of the above embodiment. By brake system 100 improves the reliability of the brake fluid filter, prolongs the filtering effect, is favorable to improve the vehicle braking reliability.

[0082] Other components of the vehicle according to the embodiment of the present application, such as driving device and steering device, its structure and operation are known to those skilled in the art, and will not be described in detail here.

[0083] In the description of the present application, the description of the terms "embodiment", "example" and the like means 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 application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0084] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A brake system characterized by, The valve body has an oil passing channel, one end of the oil passing channel is a fitting port, and an inner peripheral surface of the oil passing channel includes a stepped surface facing the fitting port. The oil tank is provided with an oil outlet joint, and the oil outlet joint is located in the fitting port. The filter element is located in the oil passing channel and is arranged between the stepped surface and the oil outlet joint, and the filter element includes: A retaining ring is annular, and an outer peripheral surface of the retaining ring is in contact with the inner peripheral surface of the oil passing channel to seal. A filter screen is arranged on the retaining ring. A first support column is connected to one side of the retaining ring facing the fitting port to abut the oil outlet joint in shaking. The filter element further includes a second support column connected to the side of the retaining ring away from the first support column, and the second support column abuts the stepped surface.

2. The brake system of claim 1, wherein, The first support column and the second support column are both multiple and are arranged at intervals in the circumferential direction.

3. The brake system of claim 2, wherein, The second support column is arranged one-to-one with the first support column.

4. The brake system of claim 3, wherein, The retaining ring, the filter screen, and the first support column are integrally formed.

5. The brake system of claim 1, wherein, The inner peripheral surface of the oil passing channel further includes:

6. The brake system of claim 1, wherein, A first tubular surface, one end of the first tubular surface being the fitting port; A second tubular surface located between the first tubular surface and the stepped surface; A first chamfer connected between the first tubular surface and the second tubular surface; One side of the retaining ring facing the stepped surface is provided with a second chamfer, and the second chamfer is in contact with the first chamfer to seal. The inner peripheral surface of the oil passing channel further includes:

7. The brake system of claim 1, wherein, A centering conical surface connected to one side of the stepped surface facing the fitting port, and the diameter of the centering conical surface gradually decreases in the direction facing the stepped surface. The end surface of the first support column and the end surface of the oil outlet joint have a buffer gap therebetween.

8. The brake system of claim 1, wherein, Further comprising:

9. The brake system according to any one of claims 1-8, characterized in that, A sealing ring located in the oil passing channel and sleeved on the oil outlet joint. The brake system includes any one of claims 1-9.

10. A vehicle characterized by comprising: ​

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