Brake assembly, brake system and vehicle

Abstract

The utility model discloses a brake assembly, a brake system and a vehicle, relates to the technical field of vehicles, and aims to solve the problem that an existing brake assembly is prone to clamping stagnation in the returning process. The brake assembly comprises a cylinder body, a piston assembly, a liquid storage device and a first sealing assembly, and a hydraulic cavity and a containing cavity which communicate with each other are formed in the cylinder body; the piston assembly is arranged in the containing cavity in a sliding mode so as to stretch into or stretch out of the hydraulic cavity. The liquid storage device is communicated with the liquid supply port; and the first sealing assembly is arranged between the liquid supply port and the hydraulic chamber, and is suitable for communicating the liquid supply port with the hydraulic chamber when the piston assembly extends out of the hydraulic chamber and blocking the communication between the liquid supply port and the hydraulic chamber when the piston assembly extends into the hydraulic chamber.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a braking component, braking system and vehicle. Background Technology

[0002] With the rapid development of new energy vehicles globally, major companies are deploying new technologies. Among these, the vehicle braking system, as one of the core components of electric vehicles, is a key element affecting vehicle performance and ensuring driving safety. The braking system is typically located between the tires, slowing or stopping their rotation, thereby slowing or stopping the vehicle's movement.

[0003] Some vehicle braking systems typically include a braking assembly, a braking device, and a brake pedal. The braking assembly is connected to the brake pedal, which contains a mechanical spring. When the vehicle brakes, the driver depresses the brake pedal, compressing the mechanical spring. The brake pedal inputs mechanical force to the braking assembly, which converts this mechanical force into fluid pressure. This compresses the fluid between the braking assembly and the braking device, causing the braking device to produce a braking effect. The vehicle tires slow down or stop rotating under the action of the braking device, and the vehicle slows down or stops moving. When the driver stops depressing the brake pedal, the mechanical spring returns to its original position, causing the brake pedal to return to its original position, which in turn causes the braking assembly to return to its original position. The fluid between the braking assembly and the braking device returns to its original position, and the braking assembly stops producing a braking effect.

[0004] After the vehicle brakes are released and the driver releases the pedal, the piston assembly connected to the pedal is subjected to a fluid pressure F that supports its return to its original position. 液 Spring force F 弹 And the atmospheric pressure F that prevents it from returning to its original position 大气压 and frictional force F 摩擦 Function, at this time F 液 +F 弹 >F 大气压 +F 摩擦 Therefore, the piston assembly and pedal can return to their initial positions under the combined force. However, due to the hysteresis of fluid flow, negative pressure easily occurs in the hydraulic chamber. At this time, the force on the piston assembly is: F 液 +F 弹 ≤F 大气压 +F 摩擦 In this situation, the piston assembly and pedal will become stuck and unable to reset. Utility Model Content

[0005] This embodiment provides a braking component, a braking system, and a vehicle to solve the problem of brake component repositioning easily causing jamming.

[0006] In a first aspect, this application provides a braking assembly, including a cylinder, a piston assembly, a reservoir assembly, and a first sealing assembly. The cylinder has a hydraulic chamber and a receiving chamber communicating with the hydraulic chamber. The cylinder also has a supply port communicating with the receiving chamber. The piston assembly is disposed in the receiving chamber and can slide within the receiving chamber. The piston assembly extends into or out of the hydraulic chamber by sliding. The reservoir is communicating with the supply port. The first sealing assembly is disposed between the supply port and the hydraulic chamber and is adapted to connect the supply port to the hydraulic chamber when the piston assembly extends out of the hydraulic chamber and a negative pressure occurs in the hydraulic chamber, and to block the communication between the supply port and the hydraulic chamber when the piston assembly extends into the hydraulic chamber.

[0007] In this embodiment, the cylinder body has a receiving chamber and a hydraulic chamber. The piston assembly is slidably disposed in the receiving chamber and is adapted to extend into or out of the hydraulic chamber. Thus, when the piston assembly extends into the hydraulic chamber, it can compress the fluid in the hydraulic chamber; when it extends out of the hydraulic chamber, the fluid flows back under pressure.

[0008] In addition, the braking assembly includes a fluid reservoir and a first sealing assembly. The fluid reservoir is connected to the receiving chamber via a supply port. The first sealing assembly is positioned between the hydraulic chamber and the supply port. When the piston assembly extends into the hydraulic chamber, the first sealing assembly blocks the connection between the supply port and the hydraulic chamber, sealing the hydraulic chamber. The fluid between the braking assembly and the braking device is compressed under the action of the piston assembly. When the piston assembly extends out of the hydraulic chamber, the fluid in the hydraulic chamber flows back. The first sealing assembly connects the supply port to the hydraulic chamber. Fluid in the fluid reservoir can flow to the hydraulic chamber through the supply port and the first sealing assembly. The first sealing assembly ensures that when the piston assembly extends out of the hydraulic chamber and a certain negative pressure occurs in the hydraulic chamber, the fluid reservoir connects to the hydraulic chamber, allowing fluid in the fluid reservoir to flow to the hydraulic chamber.

[0009] In some embodiments of this application, the first sealing assembly is movably disposed along the moving direction of the piston assembly; the first sealing assembly has a first position and a second position. In the first position, the fluid supply port of the first sealing assembly is in communication with the hydraulic chamber; in the second position, the fluid supply port is isolated from the hydraulic chamber. When the piston assembly extends into the hydraulic chamber, the first sealing assembly moves to the second position to isolate the fluid supply port from the hydraulic chamber; when the piston assembly extends out of the hydraulic chamber and a certain negative pressure occurs in the hydraulic chamber, the first sealing assembly moves to the first position to communicate with the hydraulic chamber. By switching between the two positions of the first sealing assembly, the first sealing assembly can meet the different needs of the braking assembly under different working conditions.

[0010] In some embodiments of this application, the braking assembly includes a blocking member disposed on the side of the first sealing assembly away from the hydraulic chamber; the first sealing assembly is provided with a fluid channel, and when the first sealing assembly is in a first position, one end of the fluid channel is connected to the fluid supply port and the other end is connected to the hydraulic chamber; when the first sealing assembly is in a second position, one end of the fluid channel is in contact with the blocking member and the other end is connected to the hydraulic chamber.

[0011] The fluid channel allows fluid to freely transfer between the two sides of the first sealing assembly. When the first sealing assembly is in the first position, the fluid channel is open, and fluid in the reservoir can be supplied to the hydraulic chamber through the supply port and the fluid channel. When the first sealing assembly is in the second position, the first sealing assembly is in contact with the blocking member, and one end of the fluid channel abuts against the blocking member, thus blocking the fluid channel and sealing the hydraulic chamber.

[0012] In some embodiments of this application, a first receiving groove communicating with a receiving chamber is provided inside the cylinder, and the first receiving groove is located between the liquid supply port and the receiving chamber; a first sealing assembly is disposed within the first receiving groove and can move within the first receiving groove. The first receiving groove cooperates with the first sealing assembly to limit the range of movement of the first sealing assembly within the receiving chamber. The first sealing assembly moves within the first sealing groove under the influence of the fluid pressure in the hydraulic chamber, realizing the switching between a first position and a second position, without the need for additional components to control the movement of the first sealing assembly.

[0013] In some embodiments of this application, the first receiving groove includes a first sidewall and a second sidewall disposed opposite to each other, the two opposite sidewalls being arranged along the sliding direction of the piston assembly; when the first sealing assembly is in the first position, the first sealing assembly contacts the first sidewall; when the first sealing assembly is in the second position, the first sealing assembly contacts the second sidewall, and the second sidewall constitutes a blocking member.

[0014] When the first sealing assembly is in the first position, it contacts the first sidewall. One end of the fluid channel is connected to the fluid supply port, and the other end is connected to the hydraulic chamber. At this time, the fluid channel is unobstructed. When the first sealing assembly is in the second position, it contacts the second sidewall. One end of the fluid channel is also in contact with the second sidewall, and the other end is connected to the hydraulic chamber. The second sidewall constitutes the aforementioned blocking component, eliminating the need for a separate blocking component, reducing processing steps, and improving production efficiency.

[0015] In some embodiments of this application, the first sealing assembly includes an inner ring and an outer ring. The inner ring has a fluid channel and its inner wall abuts against the piston assembly. The outer ring surrounds the inner ring and is disposed within a first receiving groove. The first sealing assembly can use combinations of inner and outer rings with different structures to meet different requirements under different working conditions.

[0016] In some embodiments of this application, the inner ring portion extends beyond the first receiving groove, creating a gap between the piston assembly that mates with the inner ring of the first sealing assembly and the cylinder body. This gap is divided by the first sealing assembly into a first gap and a second gap located on opposite sides of the first sealing assembly. The first gap connects the fluid supply port to the first sealing assembly, and the second gap connects the first sealing assembly to the hydraulic chamber. The inner ring portion is partially within the first sealing groove and partially outside the first sealing groove.

[0017] In some embodiments of this application, the fluid channel includes a first opening and a second opening that are connected. The first opening is disposed within a first receiving groove and faces a second sidewall. The second opening is disposed outside the first receiving groove and communicates with a second gap. When the first sealing assembly is in the first position, the first opening is inside the first receiving groove and communicates with the first gap, while the second opening is outside the first receiving groove and communicates with the second gap, thus ensuring unobstructed fluid flow. When the first sealing assembly is in the second position, the first opening is inside the first receiving groove and contacts the second sidewall; the first opening is not connected to the first gap, while the second opening is outside the first receiving groove and communicates with the second gap, thus blocking the fluid flow.

[0018] In some embodiments of this application, the inner ring includes: a first inner wall, a first end wall, and a second end wall, the first inner wall and the second end wall being respectively connected to opposite edges of the first end wall; the first inner wall is in contact with the piston assembly; and a second opening is provided on the first end wall. The second opening provided on the first end wall communicates with a second gap, allowing the fluid passage to remain open when the position of the first sealing assembly shifts.

[0019] In some embodiments of this application, the hardness of the inner ring is greater than that of the outer ring. Different working environments necessitate differences in the hardness of the inner and outer rings. The inner ring, which mates with the piston assembly, requires high strength and wear resistance; the outer ring, which contacts the first receiving groove, requires high elasticity and sealing performance.

[0020] In some embodiments of this application, multiple fluid channels are provided circumferentially on the inner ring. Fluid can be transferred from one side of the first sealing assembly to the other through the fluid channels. Since fluid channels are provided circumferentially on the inner ring, the inlet can communicate with any fluid channel, and the relative position of the inlet to the first sealing assembly is not limited, which facilitates the adaptation of the first sealing assembly to the cylinder body, facilitates assembly, and speeds up production.

[0021] In some embodiments of this application, a plurality of fluid channels on the inner ring are evenly arranged around its circumference. Fluid can be uniformly transferred through the fluid channels along the circumference of the inner ring, so that the first sealing assembly is subjected to uniform fluid pressure along the circumference.

[0022] In some embodiments of this application, the braking assembly includes a second sealing assembly disposed on the side of the fluid supply port opposite to the first receiving groove, and adapted to seal the gap between the piston assembly and the cylinder. The main function of the second sealing assembly is to seal the cylinder and piston assembly, prevent fluid leakage, and ensure the normal operation of the braking device.

[0023] In some embodiments of this application, the braking assembly includes a second receiving groove, which communicates with the receiving chamber and is located on the side of the fluid supply port opposite to the first receiving groove; a second sealing assembly is disposed within the second receiving groove. The second receiving groove and the second sealing assembly cooperate to fix the position of the second sealing assembly, thereby forming a stable sealing space inside the cylinder and ensuring the normal operation of the braking device.

[0024] Secondly, embodiments of this application also provide a braking system, which includes the braking components described in the first aspect above.

[0025] In some embodiments of this application, the braking system further includes a brake pedal, which is connected to one end of the piston assembly extending out of the receiving chamber; the other end of the piston assembly is slidably disposed within the receiving chamber. The brake pedal is an operating component for the driver to input mechanical force into the braking system. When the driver depresses the brake pedal, mechanical force is input into the braking system, triggering the braking system to brake the vehicle. When the driver releases the brake pedal, the vehicle stops braking.

[0026] Thirdly, embodiments of this application also provide a vehicle that includes the braking components described in the first aspect above, or the braking system described in the second aspect above. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This application provides a schematic diagram of the structure of a vehicle.

[0029] Figure 2 Examples of this application Figure 1 Schematic diagram of the middle braking assembly;

[0030] Figure 3 Examples of this application Figure 2 Schematic diagram of the middle cylinder block;

[0031] Figure 4 Examples of this application Figure 2Schematic diagram of the middle braking component;

[0032] Figure 5 Examples of this application Figure 2 A schematic diagram of the braking assembly structure when the first sealing component is in the first position;

[0033] Figure 6 Examples of this application Figure 2 A schematic diagram of the braking assembly structure when the first sealing component is in the second position;

[0034] Figure 7 Examples of this application Figure 2 A schematic diagram of the structure of the first sealing assembly;

[0035] Figure 8 Examples of this application Figure 7 A schematic diagram of the cross-sectional structure of the first sealing component.

[0036] Attached image reference numerals: 1000, Vehicle;

[0037] 100. Vehicle body; 200. Wheel; 200A. Front wheel; 200B. Rear wheel; 300. Braking system; 301. Braking assembly; 302. Braking line; 303. Braking device; 303A. Front wheel braking device; 303B. Rear wheel braking device; 304. Brake pedal;

[0038] 10. Cylinder body; 11. Piston assembly; 111. Piston rod; 112. Input rod; 113. Piston rod sealing assembly; 114. Input rod limiting assembly; 115. Second elastic element; 12. Liquid storage device; 13. First sealing assembly; 16. Second sealing assembly; 20. First elastic element;

[0039] 101. Hydraulic chamber; 102. Receiving chamber; 103. Liquid supply port; 104. First gap; 105. Second gap; 130. Fluid passage; 131. First position; 132. Second position; 133. Inner ring; 134. Outer ring; 135. First inner wall; 136. First end wall; 137. Second end wall; 138. First opening; 139. Second opening; 14. Blocking element; 15. First receiving groove; 151. First side wall; 152. Second side wall; 17. Second receiving groove. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indicator will also change accordingly.

[0042] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, when describing pipelines, the terms "connected" and "linked" as used in this application have the meaning of establishing electrical connection. The specific meaning needs to be understood in conjunction with the context.

[0044] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0045] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0046] like Figure 1 As shown, this application provides a vehicle 1000. The vehicle 1000 can be a pure electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, a gasoline-powered vehicle, etc. The vehicle 1000 can also be a sedan, truck, bus, lorry, trailer, etc.

[0047] Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in an embodiment of this application. The vehicle 1000 includes a body 100 and wheels 200. The body 100 is used for passengers to ride in and for carrying goods. The wheels 200 are installed under the body 100 to support the body 100 and are able to roll on the road surface so that the vehicle 1000 can move.

[0048] For example, the wheel 200 may include a front wheel 200A and a rear wheel 200B, the front wheel 200A may include a left front wheel and a right front wheel, and the rear wheel 200B may include a left rear wheel and a right rear wheel.

[0049] Please continue reading. Figure 1 In some embodiments, the vehicle 1000 also includes a braking system 300 disposed between the vehicle body 100 and the wheels 200. The braking system 300 is adapted to ensure that the vehicle safely decelerates or stops, thereby ensuring driving safety.

[0050] The braking system 300 may include a hydraulic braking system or a pneumatic braking system, etc., and this application does not limit it. For ease of description, the embodiments of this application are described using a hydraulic braking system as an example.

[0051] The braking system 300 includes: a braking assembly 301, a braking line 302, a braking device 303, and a brake pedal 304. The brake pedal is mounted on the vehicle body 100 and serves as a driver operating component. The driver is adapted to operate the brake pedal 304 to output mechanical energy to the braking assembly 301. The braking assembly 301, mounted on the vehicle body 100, is adapted to convert the mechanical energy input from the brake pedal 304 into the kinetic energy of a fluid, thereby compressing the fluid between the braking assembly 301 and the braking device 303. The braking line 302 connects the braking assembly 301 and the braking device 303. The braking device 303 is connected to the wheel 200. The fluid within the braking device 303 is compressed, and the braking device 303 generates a braking effect, causing the wheel 200 to slow down or stop rotating, while simultaneously slowing down or stopping the movement of the vehicle body 100.

[0052] Please see Figure 2 , Figure 3 and Figure 4 , Figure 2 This paper shows a schematic diagram of the structure of a braking assembly 301 provided in an embodiment of this application. Figure 3 The embodiments provided in this application are shown. Figure 2 A schematic diagram of the cylinder block 10 structure. Figure 4 It shows Figure 2 A partial structural schematic diagram of the braking assembly 301. In some embodiments, the braking assembly 301 includes a cylinder 10, a piston assembly 11, a fluid reservoir 12, and a first sealing assembly 13.

[0053] The cylinder body 10 is suitable for storing fluid and can be installed on the vehicle body 100. The cylinder body 10 internally forms a receiving chamber 102, a hydraulic chamber 101, and a fluid supply port 103. The receiving chamber 102 is located inside the cylinder body 10; the fluid supply port 103 communicates with the receiving chamber 102; the hydraulic chamber 101 is connected to the receiving chamber 102; and the end of the hydraulic chamber 101 away from the receiving chamber 102 is connected to the brake line 302. A first elastic element 20 is also provided inside the cylinder body 10, disposed in the hydraulic chamber 101, with one end contacting the piston assembly 11 and the other end contacting the inner wall of the hydraulic chamber 101. Exemplarily, the fluid can be hydraulic oil, air, etc., and this application does not limit this. For ease of description, hydraulic oil is used as an example in the embodiments of this application.

[0054] For example, the cylinder body 10 can be made of metal, such as cast iron, aluminum alloy, stainless steel, etc., and this application embodiment does not limit this. Using a metal material as the manufacturing material of the cylinder body 10 can give the cylinder body high strength and corrosion resistance.

[0055] The piston assembly 11 is disposed in the receiving chamber 102 and can slide in the direction communicating with the hydraulic chamber 101 and the receiving chamber 102, extending into or out of the hydraulic chamber 101. When the piston assembly 11 extends into the hydraulic chamber 101, it applies pressure to the fluid in the hydraulic chamber 101, compressing the fluid between the braking assembly 301 and the braking device 303; when the piston assembly 11 extends out of the hydraulic chamber 101, the liquid in the hydraulic chamber 101 flows back under pressure, and at the same time, the fluid between the braking assembly 301 and the braking device 303 returns to its original position.

[0056] The piston assembly 11 includes: a piston rod 111, an input rod 112, a piston rod sealing assembly 113, an input rod limiting assembly 114, and a second elastic element 115. The piston rod 111 is partially disposed within a receiving chamber 102, sliding freely within the chamber to apply pressure to the fluid. One end of the input rod 112 is connected to the piston rod 111, and the other end is connected to the brake pedal 304. The input rod limiting assembly 114 is connected between the piston rod 111 and the input rod 112. The piston rod sealing assembly 113 is disposed between the input rod 112 and the piston rod 111, ensuring a seal at the connection between them. The second elastic element 115 is disposed between the input rod 112 and the piston rod 111; when the brake pedal 304 applies mechanical force, the second elastic element 115 can mitigate the large impact force during this process, preventing damage to the piston rod 111 due to excessive force.

[0057] The reservoir 12 is connected to the supply port 103. The reservoir 12, also known as a brake fluid reservoir or master cylinder reservoir, provides additional fluid storage space for the braking system 300 and replenishes the braking system 300 with fluid. Exemplarily, the reservoir 12 can be made of engineering plastics, aluminum alloy, or stainless steel, etc., but this embodiment is not limited thereto.

[0058] The first sealing assembly 13 is disposed between the fluid supply port 103 and the hydraulic chamber 101. When the piston assembly 11 extends into the hydraulic chamber 101, the first sealing assembly 13 blocks the communication between the fluid supply port 103 and the hydraulic chamber 101, sealing the hydraulic chamber 101. The fluid between the braking assembly 301 and the braking device 303 is compressed under pressure. When the piston assembly 11 extends out of the hydraulic chamber 101 and a certain negative pressure appears in the hydraulic chamber 101, the first sealing assembly 13 connects the fluid supply port 103 to the hydraulic chamber 101. The fluid in the reservoir 12 can flow to the hydraulic chamber 101 through the fluid supply port 103 and the first sealing assembly 13. At this time, the piston assembly 11 is supported by the fluid pressure F that allows it to return to its original position. 液 Spring force F 弹 And the atmospheric pressure F that prevents it from returning to its original position 大气压 and frictional force F 摩擦 Function. Because the liquid storage device 12 replenishes the hydraulic chamber 101 with fluid in a timely manner through the fluid channel 130, it avoids a large negative pressure in the hydraulic chamber 101, ensuring that the piston assembly 11 is always subjected to the force F. 液 +F 弹 >F 大气压 +F 摩擦 There will be no jamming during the return process of piston assembly 11.

[0059] This allows the brake pedal 304, which is connected to the piston assembly 11, to return to its normal position, thus resolving the jamming problem during the return process of the brake pedal 304.

[0060] In some embodiments of this application, the first sealing assembly 13 is movably disposed in the receiving chamber 102 along the sliding direction of the piston assembly 11, thereby allowing the first sealing assembly 13 to move within the receiving chamber 102.

[0061] Please see Figure 4 , Figure 5 and Figure 6 , Figure 5 This is a partial structural diagram of the braking assembly 301 when the first sealing assembly 13 is in the first position 131. Figure 6This is a partial structural diagram of the brake assembly 301 when the first sealing assembly 13 is in the second position 132. The first sealing assembly 13 has a first position 131 and a second position 132 in the receiving chamber 102. In the first position 131, the fluid supply port 103 is connected to the hydraulic chamber 101; in the second position 132, the fluid supply port 103 is isolated from the hydraulic chamber 101. When the piston assembly 11 extends into the hydraulic chamber 101, the first sealing assembly 13 moves to the second position 132, isolating the fluid supply port 103 from the hydraulic chamber 101; when the piston assembly 11 extends out of the hydraulic chamber 101, the first sealing assembly 13 moves to the first position 131, connecting the fluid supply port 103 to the hydraulic chamber 101. By switching between the two positions of the first sealing assembly 13, the first sealing assembly 13 can meet the different needs of the brake assembly 301 under different operating conditions.

[0062] In some embodiments of this application, the braking assembly 301 includes a blocking member 14, which is disposed on the side of the first sealing assembly 13 away from the hydraulic chamber 101; the first sealing assembly 13 is provided with a fluid channel 130, which allows fluid to freely transfer between the two sides of the first sealing assembly 13.

[0063] When the first sealing assembly 13 is in the first position 131, one end of the fluid channel 130 is connected to the liquid supply port 103, and the other end is connected to the hydraulic chamber 101. Fluid in the liquid storage device 12 can replenish fluid into the hydraulic chamber 101 through the liquid supply port 103 and the fluid channel 130. When the first sealing assembly 13 is in the second position 132, one end of the fluid channel 130 is in contact with the blocking member 14, and the other end is connected to the hydraulic chamber 101. The fluid channel 130 blocks the flow, thus sealing the hydraulic chamber 101.

[0064] In some embodiments of this application, a first receiving groove 15 communicating with a receiving chamber 102 is provided inside the cylinder body 10. The first receiving groove 15 is located between the liquid supply port 103 and the receiving chamber 102. A first sealing assembly 13 is disposed within the first receiving groove 15. The first receiving groove 15 cooperates with the first sealing assembly 13 to restrict the movement range of the first sealing assembly 13 within the first receiving groove 15, thereby limiting the movement range of the first sealing assembly 13 within the receiving chamber 102. The first sealing assembly 13 moves within the first receiving groove 15 under the influence of the fluid pressure in the hydraulic chamber 101. Thus, there is no need to add an additional component to control the movement of the first sealing assembly 13, allowing the first sealing assembly 13 to move between a first position 131 and a second position 132, reducing the production steps of the brake assembly 301 and improving production efficiency.

[0065] In some embodiments of this application, the first receiving groove 15 includes a first sidewall 151 and a second sidewall 152 disposed opposite to each other, and the first sidewall 151 and the second sidewall 152 are arranged along the sliding direction of the piston assembly 11. When the first sealing assembly 13 is in the first position 131, the first sealing assembly 13 is in contact with the first sidewall 151. When the first sealing assembly 13 is in the second position 132, one end of the fluid passage 130 is in contact with the second sidewall 152, that is, the second sidewall 152 constitutes the blocking member 14.

[0066] When the first sealing assembly 13 is in the first position 131, it is in contact with the first sidewall 151. One end of the fluid channel 130 is connected to the liquid supply port 103, and the other end is connected to the hydraulic chamber 101. At this time, the fluid channel 130 is unobstructed. When the first sealing assembly 13 is in the second position 132, it is in contact with the second sidewall 152. One end of the fluid channel 130 is in contact with the second sidewall 151, and the other end is connected to the hydraulic chamber 101. The second sidewall 152 constitutes the aforementioned blocking member 14, eliminating the need for a separate blocking member 14, reducing processing steps, and improving production efficiency.

[0067] Please see Figure 4 , Figure 7 and Figure 8 , Figure 7 This is a schematic diagram of the structure of the first sealing component 13 in the embodiments of this application; Figure 8 This is a cross-sectional structural diagram of the first sealing component 13 in this embodiment of the application. The first sealing component 13 includes an inner ring 133 and an outer ring 134. The inner ring 133 is provided with a fluid channel 130, and its inner wall surface abuts against the piston assembly 11. The first sealing component 13 and the piston assembly 11 are interference-fitted with each other. The outer ring 134 surrounds the inner ring 133 and is disposed in the first receiving groove 15.

[0068] In this embodiment, by setting an outer ring 133 and an inner ring 134, the materials of the inner ring 133 and the outer ring 134 can be different to adapt to different usage environments, thereby improving the overall sealing effect of the first sealing assembly 13. For example, the inner ring 133 needs to slide with the piston assembly 11 and needs to slide within the first receiving groove 15, while the outer ring 134 only needs to slide within the first receiving groove 15.

[0069] Please continue reading. Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8The inner ring 133 extends out of the first receiving groove 15, so that the piston assembly 11, which abuts against the first sealing assembly 13, forms a gap with the inner wall of the receiving chamber 102. The gap is divided by the first sealing assembly 13 into a first gap 104 connecting the liquid supply port 103 and the first sealing assembly 13, and a second gap 105 connecting the hydraulic chamber 101 and the first sealing assembly 13. In this way, by having the inner ring 133 extend out of the first receiving groove 15 and abut against the piston assembly 11, the sealing strength between the inner ring 133 and the piston assembly 11 can be ensured. In addition, the gap formed between the piston assembly 11 and the inner wall of the receiving chamber 102 constitutes a channel connecting the hydraulic chamber 101 and the first sealing assembly 13, as well as a channel connecting the liquid supply port 103 and the first sealing assembly 13. Therefore, there is no need to additionally set up channels connecting the liquid supply port 103 and the first sealing assembly 13, and the hydraulic chamber 101 and the first sealing assembly 13, which helps to reduce the production steps of the brake assembly 301 and reduce production costs.

[0070] In some embodiments of this application, the fluid channel 130 includes a first opening 138 and a second opening 139 that are connected. The first opening 138 is disposed inside the first receiving groove 15 and is disposed toward the second sidewall 152. The second opening 139 is disposed outside the first receiving groove 15 and is connected to the second gap 105.

[0071] Thus, the liquid storage device 12 is connected to the hydraulic chamber 101 through the liquid supply port 103, the first gap 104, the fluid channel 130, and the second gap 105. When the first sealing assembly 13 is in the first position 131, the first opening 138 is inside the first receiving groove 15 and connected to the first gap 104, while the second opening 139 is outside the first receiving groove 15 and connected to the second gap 105. The first gap 104 and the second gap 105 are connected. When the first sealing assembly 13 is in the second position 132, the first opening 138 is inside the first receiving groove 15 and in contact with the second sidewall 152. At this time, the first opening 138 is not connected to the first gap 104, while the second opening 139 is outside the first receiving groove 15 and connected to the second gap 105. The first gap 104 and the second gap 105 are blocked.

[0072] In some embodiments of this application, the inner ring 133 includes a first inner wall 135, a first end wall 136, and a second end wall 137. The first inner wall 135 contacts the piston assembly 11, and the first end wall 136 and the second end wall 137 are respectively connected to the opposite two edges of the first inner wall 135. The first inner wall 135 is disposed in contact with the piston assembly 11, the second end wall 137 is adapted to contact the first side wall 151, and a second opening 139 is provided on the first end wall 136.

[0073] Thus, by setting the second opening 139 on the first end wall 136, and connecting the first end wall 136 and the second end wall 137 to the opposite edges of the first inner wall 135, the contact area between the second opening 139 and the second gap 105 can be increased. This helps to ensure that the second opening 139 is always connected to the hydraulic chamber 101, thereby improving the operational stability of the braking assembly 301.

[0074] In some embodiments of this application, the hardness of the inner ring 133 is greater than that of the outer ring 134.

[0075] For example, the inner ring 133 may be made of metal, such as stainless steel or aluminum alloy, and this application does not limit this.

[0076] Furthermore, the outer ring 134 is combined with the inner ring 133 and contacts the first receiving groove 15. The outer ring 134 can have high elasticity and sealing performance. For example, the material of the outer ring 134 can be rubber. For example, the rubber material can be nitrile butadiene rubber (NBR), fluorocarbon rubber (FKM), polyurethane rubber (PU), etc., and this application does not limit it.

[0077] Since the inner ring 133 and the outer ring 134 have different operating environments, that is, the inner ring 133 needs to slide with the piston assembly 11. If the hardness of the inner ring 133 is low, it is easy to deform under the action of the piston assembly 11 when the piston assembly 11 slides, thus affecting the sealing performance between the inner ring 133 and the piston assembly 11. The outer ring 134 only needs to slide in the first receiving groove 15 and the sliding distance is short. Therefore, its hardness requirement is lower. In this way, by making the hardness of the inner ring 133 greater than that of the outer ring 134, the overall sealing performance of the first sealing assembly 13 can be ensured.

[0078] In some embodiments of this application, fluid channels 130 are disposed on the inner ring 133, and multiple fluid channels 130 are spaced apart circumferentially along the inner ring 133. Since the inner ring 133 is mostly made of metal, possessing good strength and being resistant to deformation, the placement of the fluid channels 130 on the inner ring 133 ensures the stability and unobstructed flow of the fluid channels 130, allowing fluid to transfer between the liquid storage device 12 and the hydraulic chamber 101. Fluid can also transfer between the two sides of the first sealing assembly 13 via the fluid channels 130.

[0079] In some embodiments of this application, the fluid channels 130 can be evenly spaced along the circumference on the inner ring 133. This design allows the fluid to be transferred evenly through the fluid channels 130, so that the first sealing assembly 13 is subjected to uniform fluid pressure along the circumference, thereby reducing the risk of failure such as deformation and fatigue damage of the first sealing assembly 13.

[0080] Please see Figure 4 In some embodiments of this application, the braking assembly 301 further includes a second receiving groove 17 and a second sealing assembly 16. The second receiving groove 17 communicates with the receiving chamber 102 and is located on the side of the fluid supply port 103 opposite to the first receiving groove 15. The second sealing assembly 16 is disposed within the second receiving groove 17. The main function of the second sealing assembly 16 is to seal the cylinder 10 to prevent fluid leakage and ensure the normal operation of the braking device 303. The design of the second sealing assembly 16 may be a lip seal, and this application does not limit this design.

[0081] In some embodiments of this application, the braking system 300 further includes a brake pedal 304. One end of the head of the piston assembly 11 is slidably disposed in the receiving chamber 102, and the other end of the piston assembly 11 extends out of the receiving chamber 102 and is connected to the brake pedal 304. The brake pedal 304 is a direct interface between the driver and the braking system 300 of the vehicle 1000. The driver inputs mechanical force to the braking assembly 301 through the brake pedal 304. The braking assembly 301 converts the mechanical force into fluid pressure. The braking assembly 301 compresses the fluid between the braking assembly 301 and the braking device 303, and the braking device 303 produces a braking effect, causing the vehicle body 100 to slow down or stop moving.

[0082] Based on the braking assembly 301 described above, the braking assembly 301 provided in this application embodiment can at least achieve the following functions.

[0083] When the car brakes, the brake pedal 304 drives the piston assembly 11 to slide into the hydraulic chamber 101, increasing the pressure inside the hydraulic chamber 101. Under the pressure, the first sealing assembly 13 moves away from the hydraulic chamber 101, and the first opening 138 is tightly attached to the second side wall 152, blocking the fluid passage 130 and achieving a seal. When the brake pedal 304 returns to its original position, it drives the piston assembly 11 to move, creating a negative pressure inside the hydraulic chamber 101. The first sealing assembly 13 moves closer to the hydraulic chamber 101, and the first opening 138 moves away from the second side wall 152. The fluid in the reservoir 12 flows into the hydraulic chamber 101 through the fluid passage 130, solving the problem of jamming during the return process of the brake pedal 304.

[0084] In understanding the scope of this utility model, the term "comprising" and its derivatives, as used herein, are intended to be open-ended terms that specify the presence of the described features, elements, components, groups, integrals, and / or steps, but do not exclude the presence of other undescribed features, elements, components, groups, integrals, and / or steps. This concept also applies to words with similar meanings, such as the terms "comprising," "having," and their derivatives.

[0085] The term "attached" or "joined" as used herein includes: a construction in which one element is directly fixed to another element by fixing it directly to another element; a construction in which one element is indirectly fixed to another element by fixing it to an intermediate member, which in turn is fixed to another element; and a construction in which one element is integral with another element, that is, one element is substantially part of another element. This definition also applies to words with similar meanings, such as "connect," "joint," "couple," "install," "adhere," "fix," and their derivatives. Finally, degree terms such as "substantially," "approximately," and "approximately" as used herein indicate the amount of deviation from which modifications to the terminology do not significantly alter the final result.

[0086] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Features described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0087] The utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that the utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of the utility model, all of which fall within the scope of protection claimed by the utility model.

Claims

1. A braking assembly, characterized in that, include: A cylinder body (10) is provided, wherein a hydraulic chamber (101) and a receiving chamber (102) communicating with the hydraulic chamber (101) are formed therein; and a liquid supply port (103) communicating with the receiving chamber (102) is provided on the cylinder body (10). A piston assembly (11) is slidably disposed in the receiving chamber (102) to extend into or out of the hydraulic chamber (101); The liquid storage device (12) is connected to the liquid supply port (103); A first sealing assembly (13) is disposed between the liquid supply port (103) and the hydraulic chamber (101), and is adapted to connect the liquid supply port (103) to the hydraulic chamber (101) when the piston assembly (11) extends out of the hydraulic chamber (101) and a negative pressure occurs inside the hydraulic chamber (101), and to block the connection between the liquid supply port (103) and the hydraulic chamber (101) when the piston assembly (11) extends into the hydraulic chamber (101).

2. The braking assembly according to claim 1, characterized in that, The first sealing assembly (13) is movably disposed along the sliding direction of the piston assembly (11). When the first sealing assembly (13) moves, it has a first position (131) and a second position (132). In the first position (131), the first sealing assembly (13) connects the liquid supply port (103) with the hydraulic chamber (101). In the second position (132), the first sealing assembly (13) blocks the connection between the liquid supply port (103) and the hydraulic chamber (101).

3. The braking assembly according to claim 2, characterized in that, Also includes: A blocking element (14) is disposed on the side of the first sealing assembly (13) opposite to the hydraulic chamber (101); The first sealing assembly (13) is provided with a fluid channel (130). When the first sealing assembly (13) is in the first position (131), one end of the fluid channel (130) is connected to the liquid supply port (103) and the other end is connected to the hydraulic chamber (101). When the piston assembly (11) is in the second position (132), one end of the fluid channel (130) is in contact with the blocking member (14) and the other end is connected to the hydraulic chamber (101).

4. The braking assembly according to claim 3, characterized in that, The cylinder body (10) is provided with a first receiving groove (15) communicating with the receiving chamber (102), and the first receiving groove (15) is located between the liquid supply port (103) and the receiving chamber (102); the first sealing assembly (13) is movably disposed in the first receiving groove (15).

5. The braking assembly according to claim 4, characterized in that, The first receiving groove (15) includes a first sidewall (151) and a second sidewall (152) disposed opposite to each other, and the first sidewall (151) and the second sidewall (152) are arranged along the sliding direction of the piston assembly (11); When the first sealing assembly (13) is in the first position (131), the first sealing assembly (13) is in contact with the first sidewall (151). When the first sealing assembly (13) is in the second position (132), one end of the fluid channel (130) is in contact with the second sidewall (152), and the second sidewall (152) constitutes the blocking member (14).

6. The braking assembly according to claim 5, characterized in that, The first sealing assembly (13) includes: The inner ring (133) is provided with the fluid channel (130), and the inner wall surface of the inner ring (133) abuts against the piston assembly (11); The outer ring (134) is disposed around the inner ring (133) and is disposed within the first receiving groove (15).

7. The braking assembly according to claim 6, characterized in that, A portion of the inner ring (133) extends out of the first receiving groove (15) to provide a first gap (104) and a second gap (105) between the piston assembly (11) and the cylinder (10) located on opposite sides of the first sealing assembly (13). The first gap (104) connects the liquid supply port (103) and the first sealing assembly (13), and the second gap (105) connects the first sealing assembly (13) and the hydraulic chamber (101).

8. The braking assembly according to claim 7, characterized in that, The fluid channel (130) includes a first opening (138) and a second opening (139) that are connected. The first opening (138) is located inside the first receiving groove (15) and is located towards the second side wall (152). The second opening (139) is located outside the first receiving groove (15) and is connected to the second gap (105).

9. The braking assembly according to claim 8, characterized in that, The inner ring (133) includes: a first inner wall (135), a first end wall (136), and a second end wall (137). The first inner wall (135) and the second end wall (137) are respectively connected to the two opposite edges of the first end wall (136). The first inner wall (135) is in contact with the piston assembly (11). The second end wall (137) is adapted to contact the first side wall (151). The second opening (139) is provided on the first end wall (136).

10. The braking assembly according to any one of claims 6-9, characterized in that, The hardness of the inner ring (133) is greater than that of the outer ring (134).

11. The braking assembly according to any one of claims 6-9, characterized in that, The inner ring (133) is provided with a plurality of fluid channels (130), and the plurality of fluid channels (130) are arranged circumferentially around it.

12. The braking assembly according to claim 11, characterized in that, The multiple fluid channels (130) are evenly spaced around their circumference.

13. The braking assembly according to any one of claims 4-9, characterized in that, It also includes a second sealing assembly (16) disposed on the side of the liquid supply port (103) away from the first receiving groove (15) and adapted to seal the gap between the piston assembly (11) and the cylinder (10).

14. The braking assembly according to claim 13, characterized in that, It also includes a second receiving groove (17), which is connected to the receiving chamber (102) and is located on the side of the liquid supply port (103) away from the first receiving groove (15). The second sealing assembly (16) is disposed in the second receiving groove (17).

15. A braking system, characterized in that, include: The braking assembly according to any one of claims 1-14.

16. The braking system according to claim 15, characterized in that, Also includes: The brake pedal (304) has one end of the piston assembly (11) slidably disposed in the receiving chamber (102), and the other end extends out of the receiving chamber (102) and is connected to the brake pedal (304).

17. A vehicle, characterized in that, Includes the braking assembly as described in any one of claims 1-14, or the braking system as described in claim 15 or 16.

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