Brake caliper, brake caliper assembly, brake system and vehicle

Abstract

The utility model relates to brake calipers, a brake caliper assembly, a brake system and a vehicle, the brake calipers comprise a body, the outer wall of the body is provided with a sealing part which is concaved inwards in the body in the first direction, and the sealing part is provided with a first sealing face which is annularly arranged; the inner diameter of the first sealing face is gradually reduced from the outside of the body to the inside of the body in the first direction, and the first sealing face is used for being attached to a first annular sealing piece abutting against the first sealing face. By means of the technical scheme, it can be guaranteed that the attaching position of the brake caliper and the first annular sealing piece has the high sealing effect, the risk of liquid leakage at the attaching position of the brake caliper and the first annular sealing piece is avoided, and the brake efficiency of a whole vehicle is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicle parts, and specifically, to a brake caliper, a brake caliper assembly, a braking system and a vehicle. Background Art

[0002] In the related art, during vehicle braking, brake fluid is injected into the brake caliper through a brake pipe to achieve the braking function of the whole vehicle. The sealing performance at the joint between the brake caliper and the brake pipe plays a crucial role in maintaining the pressure of the whole vehicle braking system and the braking effect. If the sealing is poor, the brake fluid may leak, resulting in the failure of the braking system and seriously affecting driving safety. Therefore, how to improve the sealing performance at the joint between the brake caliper and the brake pipe has become the research goal of those skilled in the art. Summary of the Utility Model

[0003] The purpose of the present disclosure is to provide a brake caliper, a brake caliper assembly, a braking system and a vehicle, so as to ensure a high sealing effect at the joint between the brake caliper and the first annular seal, avoid the risk of liquid leakage at the joint between the brake caliper and the first annular seal, and improve the braking efficiency of the whole vehicle.

[0004] To achieve the above purpose, in the first aspect of the present disclosure, a brake caliper is provided. The brake caliper includes a body, and a sealing portion is recessed in the outer wall of the body along a first direction. The sealing portion has a first sealing surface arranged in a ring shape, and the inner diameter of the first sealing surface gradually decreases from the outside of the body towards the inside of the body along the first direction. The first sealing surface is used to fit with a first annular seal pressed against the first sealing surface.

[0005] Optionally, the first sealing surface is the side surface of a frustum of a cone, the central axis of the side surface of the frustum of the cone is parallel to the first direction, and the included angle between the generatrix of the side surface of the frustum of the cone and the central axis is 84° - 85°.

[0006] Optionally, the surface roughness of the first sealing surface is Rz6 - Rz8; and / or an anodic oxidation layer is provided on the first sealing surface, and the thickness of the anodic oxidation layer is 10 - 15 μm; and / or the body is an aluminum cast caliper.

[0007] Optionally, the body has a fluid passage for the flow of a braking medium, the sealing portion is communicated with the fluid passage, and the first sealing surface is arranged around the fluid passage.

[0008] Optionally, the sealing portion is a sunk groove structure recessed in the body, the sunk groove structure includes an inner side wall and an inner bottom wall, and at least part of the inner bottom wall forms the first sealing surface.

[0009] The second aspect of the present disclosure provides a brake caliper assembly, including: the brake caliper provided in the first aspect; a first annular seal; and a connection assembly including a union, the union being used to connect a brake pipe to the fluid passage of the body for conveying a brake medium between the brake pipe and the fluid passage, the union being pressed against the first annular seal so that the first annular seal presses against the first sealing surface.

[0010] Optionally, the connection assembly further includes a hollow bolt and a second annular seal sleeved on the rod portion of the hollow bolt and located between the head of the hollow bolt and the union. The head of the hollow bolt abuts against the second annular seal. The rod portion of the hollow bolt sequentially passes through the second annular seal, the union, and the first annular seal and is then threadedly connected to the fluid passage. The union is used to connect the brake pipe and the internal passage of the hollow bolt, and the internal passage communicates with the fluid passage.

[0011] Optionally, the union has a mounting hole for the rod portion of the hollow bolt to pass through and a flow passage for connecting the brake pipe and the mounting hole. A through hole communicating the flow passage and the internal passage is formed on the rod portion of the hollow bolt.

[0012] The third aspect of the present disclosure provides a braking system, including a brake pipe and the brake caliper assembly provided in the second aspect.

[0013] The fourth aspect of the present disclosure provides a vehicle, including the braking system provided in the third aspect.

[0014] Through the above technical solution, that is, the present disclosure provides a brake caliper. By configuring the sealing portion to have a first sealing surface arranged in a ring shape, and the inner diameter of the first sealing surface gradually decreases from the outside of the body towards the inside of the body in the first direction. That is, it can be understood that by forming the first sealing surface as a sealing surface that slopes downward and has an inclination angle from the outside of the body towards the inside of the body. In this way, when, for example, a first annular seal is pressed against and fitted to the above first sealing surface, due to the inclination angle of the first sealing surface, after the first annular seal is squeezed and deformed, it will fit more tightly with the first sealing surface, thereby forming a high-pressure sealing structure between the first annular seal and the first sealing surface, avoiding the risk of liquid leakage at the fitting portion between the brake caliper and the first annular seal, and improving the sealing effect. In addition, since the first sealing surface with an inclination angle has a certain self-adaptability, it can ensure better contact with the first annular seal, helping to eliminate gaps and enhancing the sealing performance. Furthermore, the first sealing surface with an inclination angle can ensure a relatively high pressure at the edge position of the sealing surface arranged in a ring shape, and since the sealing path of the first sealing surface is relatively long, the sealing effect is further improved. Therefore, the brake caliper provided by the present disclosure can ensure a relatively high sealing effect at the fitting portion between the brake caliper and the first annular seal, avoid the risk of liquid leakage at the fitting portion between the brake caliper and the first annular seal, and improve the braking efficiency of the whole vehicle.

[0015] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0017] Figure 1 is a partial structural schematic diagram of a brake caliper assembly provided in an exemplary embodiment of the present disclosure;

[0018] Figure 2 is a partial exploded schematic diagram of a brake caliper assembly provided in an exemplary embodiment of the present disclosure;

[0019] Figure 3 is a partial cross-sectional view of a brake caliper assembly provided in an exemplary embodiment of the present disclosure;

[0020] Figure 4 is a partial cross-sectional view of a brake caliper provided in an exemplary embodiment of the present disclosure;

[0021] Figure 5 is a partial cross-sectional view of the brake caliper provided in an exemplary embodiment of the present disclosure from another angle.

[0022] Description of Reference Numerals

[0023] 1 - Body; 110 - Fluid passage; 120 - Sealing portion; 121 - First sealing surface; 122 - Groove structure; 1221 - Inner side wall; 1222 - Inner bottom wall; 123 - Reserved machining surface; 2 - First annular seal; 3 - Connection assembly; 310 - Adapter; 311 - Mounting passage; 312 - Flow passage; 320 - Hollow bolt; 321 - Shank portion; 322 - Head; 323 - Through hole; 324 - Internal passage; 330 - Second annular seal; 4 - Brake pipe. Detailed Description of the Embodiment

[0024] The following provides a detailed description of the specific embodiments of the present disclosure with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustration and explanation of the present disclosure, and are not intended to limit the present disclosure.

[0025] In the present disclosure, unless otherwise stated, "inner" and "outer" refer to the inner and outer sides relative to the contour of the component or structure itself. In addition, it should be noted that the terms such as "first" and "second" are used to distinguish one element from another, and do not have sequentiality and importance. Additionally, in the description with reference to the accompanying drawings, the same reference numerals in different drawings represent the same elements.

[0026] According to a first aspect of the present disclosure, a brake caliper is provided. Referring to Figures 1 to 5 as shown, the brake caliper includes a body 1. The outer wall of the body 1 has a sealing portion 120 that is recessed into the body 1 along a first direction. The sealing portion 120 has a first sealing surface 121 arranged in a ring shape. The inner diameter of the first sealing surface 121 gradually decreases along the first direction from the outside of the body 1 towards the inside of the body 1. The first sealing surface 121 is used to fit with the first annular seal 2 that is pressed against the first sealing surface 121.

[0027] Through the above technical solution, that is, the present disclosure provides a brake caliper. By configuring the sealing portion 120 to have a first sealing surface 121 arranged in a ring shape, and the inner diameter of the first sealing surface 121 gradually decreases from the outside of the body 1 towards the inside of the body 1 in the first direction. That is, it can be understood that by forming the first sealing surface 121 as a sealing surface that slopes downward and has an inclination angle from the outside of the body 1 towards the inside of the body 1. In this way, when, for example, the first annular seal 2 is pressed against and fitted to the first sealing surface 121, due to the inclination angle of the first sealing surface 121, after the first annular seal 2 is squeezed and deformed, it will fit more tightly with the first sealing surface 121. Thus, a high-pressure sealing structure is formed between the first annular seal 2 and the first sealing surface 121, avoiding the risk of liquid leakage at the fitting portion between the brake caliper and the first annular seal, and improving the sealing effect. In addition, due to the inclined first sealing surface 121 having a certain adaptability, it can ensure better contact with the first annular seal 2, helping to eliminate gaps and enhance the sealing performance. Furthermore, the first sealing surface 121 with an inclination angle can ensure a higher pressure at the edge position of the sealing surface arranged in a ring shape, and since the sealing path of the first sealing surface 121 is longer, the sealing effect is further improved. Therefore, the brake caliper provided by the present disclosure can ensure a high sealing effect at the fitting portion between the brake caliper and the first annular seal 2, avoid the risk of liquid leakage at the fitting portion between the brake caliper and the first annular seal 2, and improve the braking efficiency of the whole vehicle.

[0028] Among them, it should be noted that the above first direction can refer to Figure 3 or Figure 5 the up and down direction of the drawing in the figure; in addition, the inner diameter of the first sealing surface 121 gradually decreases from the outside of the body 1 towards the inside of the body 1 in the first direction, which can also be understood as that the inner diameter of the first sealing surface 121 can gradually decrease from top to bottom along, for example, Figure 5 the drawing direction of the figure.

[0029] In some embodiments, referring to Figures 2 to 5 shown, the first sealing surface 121 can be the side surface of a frustum of a cone, which has a simple structure and is convenient for processing and manufacturing. Exemplarily, the side surface of the frustum of the cone can be, for example, Figure 4 and Figure 5 the inclined surface that extends obliquely downward towards the fluid passage 110 as exemplarily shown in the figure. While being convenient for processing and manufacturing, due to the inclined surface having a certain inclination angle, after, for example, the first annular seal 2 is squeezed and deformed, it will fit more tightly with the inclined surface. Thus, a high-pressure sealing structure is formed between the first annular seal 2 and the inclined surface, helping to improve the sealing effect at the fitting portion between the brake caliper and the first annular seal 2.

[0030] Of course, the above side surface of the frustum of the cone can be, for example,Figure 4 and Figure 5 The specific embodiment of the inclined surface that extends obliquely downward toward one side of the fluid passage 110, as exemplarily shown in Figure 5 , is exemplary. In some other embodiments not shown in the drawings, the side surface of the frustum can also be an arc surface that extends obliquely downward toward one side of the fluid passage 110, and the bending direction of the arc surface is concave downward from top to bottom along the up-down direction of the drawing in Figure 5 . In this way, it can also make the first sealing surface 121 have a certain inclination angle, so as to form a high-pressure sealing structure between the first annular seal 2 and the first sealing surface 121, and improve the sealing effect at the joint between the brake caliper and the first annular seal 2. The present disclosure does not make specific limitations on such deformation methods, and those skilled in the art can adaptively design according to actual application requirements. Figure 5 As shown in Figure 5 , the central axis h of the side surface of the frustum is parallel to the first direction, and the included angle between the generatrix L of the side surface of the frustum and the central axis h can be 84° - 85°. While facilitating processing and manufacturing, it helps to ensure that after the first annular seal 2 is extruded and deformed, it will better fit tightly with the first sealing surface 121, so as to form a high-pressure sealing structure between the first annular seal 2 and the first sealing surface 121, and improve the sealing effect at the joint between the brake caliper and the first annular seal 2. Of course, the angle value of the included angle between the generatrix L of the side surface of the frustum and the central axis h is exemplary, and the present disclosure is not limited thereto. Those skilled in the art can adaptively design according to actual application requirements.

[0031] In some embodiments, referring to Figure 5 Figure 5 shown, the central axis h of the side surface of the frustum is parallel to the first direction, and the included angle between the generatrix L of the side surface of the frustum and the central axis h can be 84° - 85°. While facilitating processing and manufacturing, it helps to ensure that after the first annular seal 2 is extruded and deformed, it will better fit tightly with the first sealing surface 121, so as to form a high-pressure sealing structure between the first annular seal 2 and the first sealing surface 121, and improve the sealing effect at the joint between the brake caliper and the first annular seal 2. Of course, the angle value of the included angle between the generatrix L of the side surface of the frustum and the central axis h is exemplary, and the present disclosure is not limited thereto. Those skilled in the art can adaptively design according to actual application requirements.

[0032] In addition, in order to ensure that the first annular seal 2 can better press and fit against the first sealing surface 121, in some embodiments, the surface roughness of the first sealing surface 121 can be Rz6 - Rz8 to improve the sealing effect. Of course, it is not limited thereto, and those skilled in the art can adaptively design the surface roughness of the first sealing surface 121 according to actual application requirements.

[0033] In some embodiments, the body 1 can be an aluminum cast caliper. Exemplarily, for example, it can be integrally die-cast from aluminum alloy, which is convenient for production and manufacturing and has a low manufacturing cost. In addition, in order to ensure that the body 1 of the brake caliper has high corrosion resistance, wear resistance and decorative properties, the surface of the aluminum cast caliper can be anodized, for example, to form a dense oxide film on the surface of the aluminum cast caliper. This oxide film not only has high hardness, high wear resistance and good heat resistance, but also can significantly improve the corrosion resistance, wear resistance and decorative properties of the aluminum cast caliper, which is beneficial to improving the overall structural reliability of the aluminum cast caliper.

[0034] Exemplarily, for example, an anodic oxidation layer may be provided on the first sealing surface 121, and the thickness of the anodic oxidation layer may be 10 - 15 μm, which helps to improve the surface corrosion resistance, wear resistance and decorative property of the first sealing surface 121. Moreover, since the first sealing surface 121 has a certain inclination angle, it helps to ensure that, for example, after the first annular seal 2 is extruded and deformed, it will fit more tightly with the first sealing surface 121 provided with the anodic oxidation layer, thereby improving the sealing effect at the joint between the brake caliper and the first annular seal 2. The present disclosure is not limited thereto.

[0035] In some embodiments, referring to Figures 1 to 5 as shown, the body 1 may have a fluid passage 110 for the brake medium to flow through. The sealing portion 120 communicates with the fluid passage 110, and the first sealing surface 121 is arranged around the fluid passage 110. In this way, when the first annular seal 2 is pressed against and fitted with the first sealing surface 121 of the sealing portion 120, a high-pressure sealing structure can be formed between the first annular seal 2 and the first sealing surface 121, which can effectively prevent the leakage of the brake medium, improve the sealing effect and the braking performance of the whole vehicle.

[0036] In addition, it should be noted that the present disclosure does not specifically limit the specific external shape structure of the body 1 of the brake caliper. Those skilled in the art can adaptively design it according to actual application requirements, and the purpose is to be able to realize braking on the wheel (not shown) after the brake medium (such as brake fluid) flows into the fluid passage 110 of the brake caliper, so as to achieve the braking function of the whole vehicle.

[0037] In addition, in some embodiments, referring to Figures 2 to 5 as shown, the sealing portion 120 may be a sunk groove structure 122 recessed in the body 1. The sunk groove structure 122 includes an inner side wall 1221 and an inner bottom wall 1222, and at least part of the inner bottom wall 1222 is formed as the first sealing surface 121. Exemplarily, as Figure 4 and Figure 5 shown, at least part of the inner bottom wall 1222 is formed as the first sealing surface 121. That is, it can be understood that the inner bottom wall 1222 of the sunk groove structure 122 includes the first sealing surface 121 arranged in a ring around the fluid passage 110 and a reserved machining surface 123 arranged in a ring around the first sealing surface 121, which is convenient for the machining and manufacturing of the sunk groove structure 122. And due to the existence of the reserved machining surface 123, when the inner diameter b of the area where the sealing surface of the first sealing surface 121 is located is smaller than the outer diameter D of the first annular seal 2 due to, for example, machining errors, it is convenient to reprocess the reserved machining surface 123 to ensure that the first annular seal 2 will fit more tightly with the first sealing surface 121 after being extruded and deformed, thereby improving the sealing effect.

[0038] In addition, it should be noted that in some other embodiments not shown, the inner bottom wall 1222 of the sinking groove structure 122 may also be entirely formed as the first sealing surface 121. The present disclosure does not make specific limitations on such deformation methods, and those skilled in the art can adaptively design according to actual application requirements. In addition, since the sinking groove structure 122 further includes an inner side wall 1221, when, for example, the first annular seal 2 or the adapter 310 is placed in the sinking groove structure 122, the inner side wall 1221 of the sinking groove structure 122 can be used to limit and fix the first annular seal 2 or the adapter 310, which is convenient for assembly operations and also helps to improve the reliability of the overall structural connection.

[0039] Among them, the outer contour of the sinking groove structure 122 can be, for example, a circular ring shape or a polygonal contour such as a square. The present disclosure does not make specific limitations on this, and those skilled in the art can adaptively design according to actual application requirements. The purpose is to be able to place the first annular seal 2 or the adapter 310.

[0040] According to a second aspect of the present disclosure, a brake caliper assembly is provided. Refer to Figures 1 to 5 As shown, the brake caliper assembly includes the brake caliper provided in the first aspect above, the first annular seal 2, and a connection assembly 3. The connection assembly 3 includes an adapter 310. The adapter 310 is used to connect the brake pipe 4 to the fluid passage 110 of the body 1 for conveying a braking medium between the brake pipe 4 and the fluid passage 110. The adapter 310 is pressed on the first annular seal 2 such that the first annular seal 2 abuts against the first sealing surface 121. This brake caliper assembly can ensure a high sealing effect at the joint between the brake caliper and the first annular seal, avoid the risk of liquid leakage at the joint between the brake caliper and the first annular seal, and improve the braking efficiency of the whole vehicle. In addition, this brake caliper assembly also has all the beneficial effects of the brake caliper provided in the first aspect above, and the present disclosure will not elaborate herein.

[0041] Among them, it should be noted that the above-mentioned first annular seal 2 can be, for example, a sealing washer, and this sealing washer can be, for example, a copper sealing washer. It is convenient to achieve that when the adapter 310 is pressed on the copper sealing washer, the copper sealing washer can be extruded and deformed to more tightly abut against the first sealing surface 121 to ensure a high sealing effect at the joint between the brake caliper and the sealing washer. Of course, the present disclosure is not limited to this. For example, the sealing washer can also be, for example, a brass sealing washer or an aluminum sealing washer, etc. The purpose is to be able to make the sealing washer be extruded and deformed under the pressing force of the connection assembly 3 to more tightly abut against the first sealing surface 121, so as to ensure a high sealing effect at the joint between the brake caliper and the sealing washer.

[0042] In addition, the outer diameter D of the first annular seal 2 may be, for example, 14 - 15 mm, the inner diameter d of the first annular seal 2 may be, for example, 10 - 12 mm, and the thickness of the first annular seal 2 (which may refer to the up - down direction in the drawing Figure 3 shown in the figure) may be, for example, 1 - 2 mm. Correspondingly, the inner diameter b of the area where the sealing surface of the first sealing surface 121 is located may be, for example, 15 - 20 mm. Exemplarily, the outer diameter D of the first annular seal 2 may be, for example, 14.5 mm, the inner diameter d of the first annular seal 2 may be, for example, 10.3 mm, the thickness dimension of the first annular seal 2 may be, for example, 1.61 mm, and the inner diameter b of the area where the sealing surface of the first sealing surface 121 is located may be, for example, 15.776 mm. The present disclosure is not limited to this, and those skilled in the art can design adaptively according to actual application requirements. The purpose is to ensure that the outer diameter D of the first annular seal 2 is less than or equal to the inner diameter b of the area where the sealing surface of the first sealing surface 121 is located, and at the same time, the inner diameter d of the first annular seal 2 is greater than the opening diameter c of the fluid passage 110, so as to ensure that after the first annular seal 2 is extruded and deformed, it will fit more tightly with the first sealing surface 121, and at the same time, it will not affect, for example, the hollow bolt 320 (which will be described in detail below) of the connection assembly 3 passing through the first annular seal 2 and being thread - connected to the fluid passage 110.

[0043] In some embodiments, referring to Figures 1 to 5 shown, the connection assembly 3 may further include a hollow bolt 320, and a second annular seal 330 sleeved on the rod portion 321 of the hollow bolt 320 and located between the head 322 of the hollow bolt 320 and the adapter 310. The head 322 of the hollow bolt 320 abuts against the second annular seal 330. The rod portion 321 of the hollow bolt 320 sequentially passes through the second annular seal 330, the adapter 310, and the first annular seal 2 and is then thread - connected to the fluid passage 110. The adapter 310 is used to connect the brake pipe 4 and the internal passage 324 of the hollow bolt 320, and the internal passage 324 communicates with the fluid passage 110. Thus, after the hollow bolt 320 is tightened, the first annular seal 2, the adapter 310, and the second annular seal 330 can, under the action of the tightening torque, make the first annular seal 2 fit more tightly with the first sealing surface 121 after being extruded and deformed, so as to form a high - pressure sealing structure between the first annular seal 2 and the first sealing surface 121, improving the sealing effect at the joint between the brake caliper and the first annular seal 2. The structure is simple and convenient for installation and operation.

[0044] In addition, in some embodiments, referring to Figure 2 and Figure 3As shown, the adapter 310 may have a mounting hole 311 through which the rod portion 321 of the hollow bolt 320 passes, and a flow passage 312 for communicating the brake pipe 4 and the mounting hole 311. A through hole 323 communicating with the flow passage 312 and the internal passage 324 is formed on the rod portion 321 of the hollow bolt 320, so that the brake pipe 4 can be communicated with the fluid passage 110 through the internal passage 324 of the hollow bolt 320, facilitating the delivery of a brake medium (such as brake fluid) into the fluid passage 110 through the brake pipe 4 to achieve the braking function of the whole vehicle.

[0045] Moreover, the above-mentioned adapter 310 may be, for example, a machined part, which can ensure that the adapter 310 has a high machining accuracy, helps to eliminate gaps, and is beneficial to ensuring a high sealing effect between the adapter 310 and the first annular seal 2, as well as between the adapter 310 and the second annular seal 330. Of course, when the adapter 310 is, for example, a casting, the contact surface of the adapter 310 that fits with the first annular seal 2 and / or the second annular seal 330 can also be designed according to the inclined surface or arc surface and other structures of the first sealing surface 121 of the brake caliper provided in the above first aspect to improve the sealing effect between the adapter 310 and the first annular seal 2, as well as between the adapter 310 and the second annular seal 330. The present disclosure does not specifically limit such deformation methods, and those skilled in the art can adaptively design according to actual application requirements.

[0046] In addition, it should be noted that since the inner diameter of the first sealing surface 121 of the body 1 of the brake caliper gradually decreases from the end far from the fluid passage 110 towards the end close to the fluid passage 110, that is, it can be understood that by forming the first sealing surface 121 into a sealing surface that is inclined downward towards the fluid passage 110 and has an inclination angle, in this way, after the first annular seal 2 is squeezed and deformed, it will fit better and tightly with the first sealing surface 121, so that a high-pressure sealing structure can be formed between the first annular seal 2 and the first sealing surface 121. And because the pressure is relatively high, even if the size specification of the hollow bolt 320 and the tightening torque when the hollow bolt 320 is tightened are reduced, it can still ensure a high sealing effect between the first annular seal 2 and the first sealing surface 121. Thus, the reduction of the size specification of the hollow bolt 320 is beneficial to lightweight design, and the reduction of the tightening torque when the hollow bolt 320 is tightened helps to facilitate the installation operation of on-site personnel and improve production efficiency.

[0047] Exemplarily, for example, the size specification of the hollow bolt 320 can be reduced from M10 to M8, and the tightening torque can be reduced from 35 Nm to 25 Nm, for example. The present disclosure is not limited thereto. Additionally, since the first sealing surface 121 is formed as a sealing surface that slopes downward toward the fluid passage 110 side and has an inclination angle, during the actual assembly process, the first annular seal 2 can be reused, for example, 4 - 5 times. And each time after disassembly and reassembly when re - torquing the hollow bolt 320, the torque at the sealed first annular seal 2 will be a little smaller than the previous torque, facilitating the tightening operation of the hollow bolt 320 and still being able to ensure a high sealing effect between the first annular seal 2 and the first sealing surface 121.

[0048] In addition, the above - mentioned second annular seal 330 can also be, for example, a copper sealing washer. The present disclosure does not make specific limitations in this regard, and those skilled in the art can adaptively design according to actual application requirements, as long as it can ensure a high sealing effect between the hollow bolt 320 and the adapter 310.

[0049] Furthermore, the present disclosure does not make specific limitations on the outer contour structure of the above - mentioned adapter 310. The purpose is to be able to press the adapter 310 against the first annular seal 2 to ensure a high sealing effect between the adapter 310 and the first annular seal 2, as well as between the first annular seal 2 and the first sealing surface 121. At the same time, the brake pipe 4 is connected to the fluid passage 110 through the adapter 310 to achieve the conveyance of the brake medium between the brake pipe 4 and the fluid passage 110.

[0050] Of course, it should be noted that the specific embodiment in which the above - mentioned adapter 310 is pressed against the first annular seal 2 after being tightened by the hollow bolt 320, for example, is exemplary. In some other embodiments not shown, the adapter 310 can also be directly configured as, for example, a pipe joint structure well - known in the art. In this way, it can be directly thread - connected to the fluid passage 110 of the brake caliper through the pipe joint structure to press against the first annular seal 2 through the pipe joint structure, so that the first annular seal 2 is pressed against the first sealing surface 121 of the brake caliper, and is connected to the brake pipe 4 through the pipe joint structure to achieve the conveyance of the brake medium between the brake pipe 4 and the fluid passage 110 of the brake caliper. The present disclosure does not make specific limitations on such deformation methods, and those skilled in the art can adaptively design according to actual application requirements.

[0051] According to a third aspect of the present disclosure, a braking system is provided, which includes a brake pipe 4 and the brake caliper assembly provided in the second aspect above. The brake pipe 4 can be connected between the master cylinder and the brake caliper to achieve the transmission of a braking medium (such as brake fluid) so as to achieve the braking function of the whole vehicle. In addition, this braking system also has all the beneficial effects of the brake caliper assembly provided in the second aspect above, and the present disclosure will not elaborate herein.

[0052] According to a fourth aspect of the present disclosure, a vehicle is provided, which includes the braking system provided in the third aspect above. Additionally, this vehicle also has all the beneficial effects of the braking system provided in the third aspect above, and the present disclosure will not elaborate herein. Furthermore, the vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the present disclosure does not make specific limitations thereto.

[0053] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0054] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination manners.

[0055] Moreover, any combination can be made between various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A brake caliper, characterized in that: The brake caliper includes a body, an outer wall of the body having a sealing portion recessed inwardly of the body along a first direction, the sealing portion having a first sealing surface arranged in an annular shape, an inner diameter of the first sealing surface gradually decreasing from the outside of the body toward the inside of the body along the first direction, and the first sealing surface is used to fit with a first annular seal pressed against the first sealing surface.

2. The brake caliper according to claim 1, characterized in that: The first sealing surface is a truncated cone side surface, the central axis of the truncated cone side surface is parallel to the first direction, and the angle between the generatrix of the truncated cone side surface and the central axis is 84°-85°.

3. The brake caliper according to claim 1, characterized in that: The surface roughness of the first sealing surface is Rz6-Rz8; and / or The first sealing surface is provided with an anodized layer, the thickness of the anodized layer is 10-15 μm; and / or The body is an aluminum cast caliper.

4. The brake caliper according to claim 1, characterized in that: The body has a fluid passage for the brake medium to flow through, the sealing portion is communicated with the fluid passage, and the first sealing surface is arranged around the fluid passage.

5. The brake caliper according to any one of claims 1 to 4, characterized in that: The sealing portion is a recessed groove structure recessed in the body, the recessed groove structure includes an inner side wall and an inner bottom wall, and at least a portion of the inner bottom wall forms the first sealing surface.

6. A brake caliper assembly, characterized in that: include: The brake caliper according to any one of claims 1 to 5; a first annular seal; as well as The connection assembly includes an adapter, which is used to connect the brake pipe to the fluid channel of the body to transport brake medium between the brake pipe and the fluid channel. The adapter is pressed on the first annular seal so that the first annular seal presses against the first sealing surface.

7. The brake caliper assembly according to claim 6, characterized in that: The connecting assembly also includes a hollow bolt, and a second annular seal which is sleeved on the rod of the hollow bolt and located between the head of the hollow bolt and the adapter. The head of the hollow bolt abuts against the second annular seal. The rod of the hollow bolt passes through the second annular seal, the adapter and the first annular seal in sequence and is threadedly connected to the fluid channel. The adapter is used to connect the brake pipe and the internal channel of the hollow bolt, and the internal channel is connected to the fluid channel.

8. The brake caliper assembly according to claim 7, characterized in that: The adapter has a mounting hole for the rod of the hollow bolt to pass through and a flow channel for connecting the brake pipe and the mounting hole. A through hole connecting the flow channel and the internal channel is formed on the rod of the hollow bolt.

9. A braking system, characterized in that: The invention comprises a brake pipe and a brake caliper assembly as claimed in any one of claims 6 to 8.

10. A vehicle, characterized in that: Includes the braking system as claimed in claim 9.

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