Brake assembly and vehicle

Abstract

The application provides a brake assembly and a vehicle. The brake assembly comprises a caliper body unit, a brake chamber unit and a charging and discharging unit. The caliper body unit comprises a caliper body having a caliper body cavity. The input end of the brake chamber unit is connected with an external air source, and the output end of the brake chamber unit is connected with the caliper body cavity. The charging and discharging unit and the brake chamber unit are arranged on the caliper body. The charging and discharging unit and the caliper body cavity are in communication with each other, and the brake chamber unit and the caliper body cavity are in communication with each other. The charging and discharging unit comprises a gas storage bag having a variable gas storage cavity. The gas storage bag is configured to store the gas in the caliper body cavity in a first working condition and release the stored gas into the caliper body cavity in a second working condition, so that the gas pressure in the caliper body cavity is stable in the first working condition and the second working condition. The application realizes the complete isolation between the caliper body cavity in the brake assembly and the outside while meeting the stability of the gas pressure in the caliper body cavity during braking.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a brake assembly and a vehicle. BACKGROUND

[0002] The latest national standard GB 7258-2022 issued in 2022 in China makes clear provisions for the vehicle braking system, highlighting the importance of optimizing the design of the braking system. Studies have shown that disc brakes have significant advantages over drum brakes, such as compact structure, good thermal stability, and are more suitable for arrangement in the braking system of high-end heavy trucks. In 2020, the penetration rate of disc brakes in Europe reached 82%, while the penetration rate of disc brakes in China was only 15%. The main reason is that the working conditions of commercial vehicles in China are complex, especially in water conditions.

[0003] Currently, disc brakes for commercial vehicles at home and abroad are defined as splash-proof units, and the brake cavity needs to be connected to the outside through the piston protection sleeve, the sliding pin protection sleeve, and the air chamber protection sleeve.

[0004] However, the brake cavity cannot be disconnected from the outside, and can only be protected by the piston protection sleeve, the sliding pin protection sleeve, and the air chamber protection sleeve. In particular, on the air chamber side, the air chamber front cavity constantly exchanges gas with the outside during braking, and the speed is very fast, so the air chamber protection sleeve is prone to failure, causing water to enter the disc brake assembly. In addition, after the piston protection sleeve and the sliding pin protection sleeve are sealed well, there will be a gas trapping phenomenon. SUMMARY

[0005] In view of the above problems, the present application provides a brake assembly and a vehicle, which can meet the stability of the pressure in the caliper cavity during braking, and also realize the complete isolation of the caliper cavity in the brake assembly from the outside.

[0006] In order to achieve the above purpose, the embodiments of the present application provide the following technical solutions:

[0007] In a first aspect, the embodiments of the present application provide a brake assembly, which comprises a caliper unit, a brake chamber unit, and a gas charging and discharging unit, the caliper unit comprises a caliper, and the caliper has a caliper cavity.

[0008] The input end of the brake chamber unit is connected to an external gas source, and the output end of the brake chamber unit is connected to the caliper cavity.

[0009] The gas charging and discharging unit and the brake chamber unit are both arranged on the caliper, the gas charging and discharging unit and the caliper cavity are in communication with each other, and the brake chamber unit and the caliper cavity are in communication with each other.

[0010] The gas charging and discharging unit comprises a gas storage air bag having a variable gas storage cavity, and the gas storage air bag is configured to store gas in the caliper cavity in a first working condition and release the stored gas into the caliper cavity in a second working condition, so as to stabilize the gas pressure in the caliper cavity in the first working condition and the second working condition.

[0011] The present application has the advantages that the caliper cavity in the brake assembly is completely isolated from the outside by adding the gas storage air bag in the gas charging and discharging unit, the gas storage air bag has the functions of storage and release, the gas pressure in the caliper cavity can be stabilized during braking by the gas storage air bag in the caliper cavity, the sealing property of the brake assembly is greatly improved, and the water crossing ability of the brake assembly is enhanced.

[0012] On the basis of the above technical solution, the present application can be further improved as follows.

[0013] In some optional embodiments, in the first working condition, the gas in the brake chamber unit flows into the caliper cavity, and part of the gas in the caliper cavity is stored in the gas storage air bag; and / or,

[0014] In the second working condition, the gas in the gas storage air bag flows into the caliper cavity, and the gas in the caliper cavity flows into the brake chamber unit.

[0015] In some optional embodiments, the first working condition is a brake starting state of the brake assembly, and the second working condition is a brake ending state of the brake assembly.

[0016] In some optional embodiments, the gas charging and discharging unit further comprises a shell, the gas storage air bag is located in the shell, the gas storage air bag has a gas inlet and outlet end, the gas inlet and outlet end is arranged on the side wall of the shell, and the gas inlet and outlet end is in communication with the caliper cavity;

[0017] The gas charging and discharging unit further comprises a gas guide pipe, and opposite ends of the gas guide pipe are connected with the gas inlet and outlet end and the caliper cavity, respectively.

[0018] In some optional embodiments, a gas port is formed in the shell to communicate the inner cavity of the shell with the outside of the shell.

[0019] In some optional embodiments, the gas charging and discharging unit further comprises a connecting assembly, and the connecting assembly comprises a first connecting piece, one end of the first connecting piece is arranged at the end of the gas guide pipe facing the caliper cavity, and the other end of the first connecting piece extends towards the caliper, so that the gas charging and discharging unit and the caliper are connected.

[0020] In some optional embodiments, the first connecting piece is a plug; and / or,

[0021] The connecting assembly further comprises a second connecting piece, the second connecting piece is a threaded fastener, threaded holes are formed in the shell and the caliper, respectively, and the threaded fastener passes through the threaded holes in sequence, so that the gas charging and discharging unit and the caliper are connected.

[0022] In some optional embodiments, the forceps body unit further comprises a bracket, a bushing and a sliding pin, the bushing is arranged at the end of the forceps body, the sliding pin is slidingly connected in the bushing, the sliding pin is fixedly connected with the bracket, the sliding pin is provided with a sliding pin protection sleeve, one end of the sliding pin protection sleeve is pressed into the forceps body, and the other end of the sliding pin protection sleeve is fixed on the bracket;

[0023] The forceps body is provided with a through hole for connecting the bushing and the forceps body cavity, the bushing is provided with a vent hole, the vent hole is connected with the through hole, and the vent hole is used for connecting the bushing and the sliding pin protection sleeve, so that the sliding pin protection sleeve and the forceps body cavity are connected with each other.

[0024] In some optional embodiments, the forceps body unit further comprises a push disc, a push rod and a piston, the push rod is arranged in the forceps body, the push rod is connected with the piston, the piston is provided with a piston protection sleeve, one end of the piston protection sleeve is fixed on the piston, and the other end of the piston protection sleeve is fixed on the push disc, the push disc is configured to move relative to the forceps body when the brake chamber unit is braked;

[0025] The push rod is connected with the piston protection sleeve, the push rod is provided with a gas guide hole, the gas guide hole is used for connecting the forceps body cavity and the push rod, so that the piston protection sleeve and the forceps body cavity are connected with each other.

[0026] In the second aspect, the embodiments of the present application further provide a vehicle comprising the above-mentioned brake assembly.

[0027] The present application provides a brake assembly and a vehicle. The vehicle comprises the brake assembly. The brake assembly comprises a forceps body unit, a brake chamber unit and a gas charging and discharging unit. The forceps body unit comprises a forceps body having a forceps body cavity. The input end of the brake chamber unit is connected with an external gas source, and the output end of the brake chamber unit is connected with the forceps body cavity. The gas charging and discharging unit and the brake chamber unit are arranged on the forceps body. The gas charging and discharging unit and the forceps body cavity are connected with each other, and the brake chamber unit and the forceps body cavity are connected with each other. The gas charging and discharging unit comprises a gas storage bag having a variable gas storage cavity. The gas storage bag is configured to store the gas in the forceps body cavity in a first working condition and release the stored gas into the forceps body cavity in a second working condition, so that the gas pressure in the forceps body cavity is stable in the first working condition and the second working condition.

[0028] By adding the gas storage bag in the gas charging and discharging unit, the gas storage bag has the functions of storage and release. The forceps body cavity in the brake assembly is completely isolated from the outside. In the braking process, the gas pressure in the forceps body cavity is stable by relying on the gas storage bag in the forceps body cavity. The sealing performance of the brake assembly is improved, and the wading ability of the brake assembly is enhanced.

[0029] In addition to the technical problems solved by the embodiments of the application described above, the technical features constituting the technical solutions and the beneficial effects brought by the technical features, other technical problems solved by the brake assembly and the vehicle provided by the embodiments of the application, other technical features included in the technical solutions and the beneficial effects brought by the technical features will be further described in detail in the specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor under the premise of the drawings.

[0031] Figure 1 is a partial structure schematic diagram of the brake assembly provided by the embodiments of the application;

[0032] Figure 2 is a structure schematic diagram of the air charging and discharging unit in the brake assembly provided by the embodiments of the application;

[0033] Figure 3 is a schematic diagram of air flow in the first working condition of the air charging and discharging unit and the brake chamber unit in the brake assembly provided by the embodiments of the application;

[0034] Figure 4 is a schematic diagram of air flow in the second working condition of the air charging and discharging unit and the brake chamber unit in the brake assembly provided by the embodiments of the application;

[0035] Figure 5 is a structure schematic diagram of the caliper body unit in the brake assembly provided by the embodiments of the application;

[0036] Figure 6 is a structure schematic diagram of the bushing in the brake assembly provided by the embodiments of the application;

[0037] Figure 7 is a structure schematic diagram of the caliper body in the brake assembly provided by the embodiments of the application;

[0038] Figure 8 is a structure schematic diagram of the push rod in the brake assembly provided by the embodiments of the application;

[0039] Figure 9 is a schematic diagram of air flow in the first working condition of the caliper body unit in the brake assembly provided by the embodiments of the application;

[0040] Figure 10FIG. 2 is a schematic diagram of airflow flowing through the caliper unit in the second working condition in the brake assembly provided by the embodiment of the present application.

[0041] Legend of reference signs:

[0042] 100 - brake assembly

[0043] 110 - caliper unit

[0044] 111 - caliper body

[0045] 1111 - through hole

[0046] 112 - bracket

[0047] 113 - bushing

[0048] 1131 - air hole

[0049] 114 - sliding pin

[0050] 1141 - sliding pin protective sleeve

[0051] 115 - push disc

[0052] 116 - push rod

[0053] 1161 - air guide hole

[0054] 117 - piston

[0055] 1171 - piston protective sleeve

[0056] 120 - brake chamber unit

[0057] 130 - charging and discharging unit

[0058] 131 - gas storage bag

[0059] 132 - housing

[0060] 1321 - gas port

[0061] 133 - air guide pipe

[0062] 134 - first connecting piece

[0063] 135 - second connecting piece

[0064] 140 - threaded hole DETAILED DESCRIPTION

[0065] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall into the scope of the present application. All other embodiments obtained should fall into the scope of the present application. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0066] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as a limitation of the present application.

[0067] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0068] It should be noted that in the description of the present application, the terms "first", "second", "third" are only used for the convenience of describing different parts, and cannot be understood as indicating or implying a sequential relationship, relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features with "first", "second", "third" can explicitly or implicitly include at least one of the features.

[0069] Currently, both domestic and international commercial vehicle disc brakes are defined as splash-proof units, requiring the brake chamber to be connected to the outside environment through piston protective sleeves, sliding pin protective sleeves, and air chamber protective sleeves. However, the brake chamber cannot be disconnected from the outside environment; it can only be protected by these three elements. The air chamber side is particularly vulnerable because the front chamber constantly exchanges gas with the outside environment during braking at high speeds, making it prone to air chamber protective sleeve failure, leading to water ingress into the disc brake assembly. Furthermore, even with proper sealing of the piston and sliding pin protective sleeves, air trapping can still occur.

[0070] To overcome the shortcomings of the prior art, the present invention provides a brake assembly and vehicle that, by adding an air reservoir in the inflation / deflation unit, achieves complete isolation between the caliper cavity of the brake assembly and the outside world. During braking, the air reservoir in the caliper cavity can be used to stabilize the air pressure in the caliper cavity, which greatly improves the sealing performance of the brake assembly and enhances its water-wading capability.

[0071] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0072] The present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the present invention.

[0073] Figure 1 This is a partial structural schematic diagram of the brake assembly provided in an embodiment of this application. Figure 2 This is a schematic diagram of the air filling and deflating unit in the brake assembly provided in this application embodiment.

[0074] like Figure 1 and Figure 2 As shown, this application embodiment provides a brake assembly 100, including a caliper unit 110, a brake chamber unit 120, and an air filling and deflating unit 130. The caliper unit 110 includes a caliper 111, and the caliper 111 has a caliper cavity.

[0075] It should be noted that the brake assembly 100 provided in this application embodiment can be a disc brake assembly 100, or of course, it can be other types. In particular, this application embodiment does not impose any restrictions here.

[0076] In addition, for the convenience of description, the brake assembly 100 in the embodiments of the present application is described by taking a disc brake assembly 100 as an example.

[0077] In some examples, the caliper body 111 can be a metal piece, and the material thereof can include one or more of copper, iron, aluminum, tin, and lead.

[0078] It should be noted that the material of the caliper body 111 is not limited herein.

[0079] Of course, in the production process, the caliper body 111 can also be made of a steel plate, plastic, or synthetic material under the premise of ensuring strength.

[0080] The input end of the brake chamber unit 120 is connected with an external air source, and the output end of the brake chamber unit 120 is connected with the caliper cavity;

[0081] The charging and discharging unit 130 and the brake chamber unit 120 are both arranged on the caliper body 111, the charging and discharging unit 130 and the caliper cavity are in communication with each other, and the brake chamber unit 120 and the caliper cavity are in communication with each other.

[0082] It should be noted that the gas between the charging and discharging unit 130 and the caliper cavity can flow to each other, and the gas between the brake chamber unit 120 and the caliper cavity can flow to each other.

[0083] In some examples, the charging and discharging unit 130 and the caliper body 111 can be connected in a detachable connection manner or a fixed connection manner.

[0084] For example, the connection can be achieved by using a bolt, a buckle, or a hanging connection. Specifically, the embodiments of the present application are not limited herein.

[0085] In some examples, the brake chamber unit 120 and the caliper body 111 can be connected in a detachable connection manner or a fixed connection manner.

[0086] For example, the connection can be achieved by using a bolt, a buckle, or a hanging connection. Specifically, the embodiments of the present application are not limited herein.

[0087] The charging and discharging unit 130 includes a gas storage air bag 131, the gas storage air bag 131 has a variable gas storage cavity, and the gas storage air bag 131 is configured to store the gas in the caliper cavity in a first working condition and release the stored gas into the caliper cavity in a second working condition, so that the gas pressure in the caliper cavity is stable in the first working condition and the second working condition.

[0088] It can be understood that when in the first working condition, the gas in the caliper cavity flows to the gas storage air bag 131, and then the gas storage cavity of the gas storage air bag 131 becomes larger, at this time, the gas storage air bag 131 is used to store the gas in the caliper cavity.

[0089] When in the second working condition, the gas in the gas storage bag 131 flows to the caliper cavity, and then the gas storage cavity of the gas storage bag 131 becomes smaller. At this time, the gas storage bag 131 is used to release the gas in the gas storage cavity to supply

[0090] the caliper cavity.

[0091] In some examples, the gas storage bag 131 can be a soft rubber, for example, the gas storage bag 131 can be made of silicone, polypropylene (PP), ethylene-vinyl acetate copolymer (EVA) and other materials with elastic deformation ability.

[0092] In other examples, the gas storage bag 131 is rubber.

[0093] Exemplarily, the gas storage bag 131 can be vulcanized rubber. Vulcanized rubber refers to the formation of unvulcanized rubber after vulcanization. Unvulcanized rubber includes natural rubber, diene-based synthetic rubber, etc.

[0094] The gas storage bag 131 is made of vulcanized rubber, which can prevent the gas storage bag 131 from breaking and make the gas storage bag 131 have higher elasticity.

[0095] Through the above setting, that is, by adding the gas storage bag 131 in the gas charging and discharging unit 130, the gas storage bag 131 has the functions of storage and release, which realizes the complete isolation of the caliper cavity in the brake assembly 100 from the outside. During braking, the gas storage bag 131 in the caliper cavity can be relied on to realize the stable pressure of the caliper cavity, greatly improve the sealing performance of the brake assembly 100, and enhance the wading ability of the brake assembly 100.

[0096] Figure 3 is a schematic diagram of the gas flow of the gas charging and discharging unit and the brake chamber unit in the brake assembly provided by the embodiment of the application in the first working condition, Figure 4 is a schematic diagram of the gas flow of the gas charging and discharging unit and the brake chamber unit in the brake assembly provided by the embodiment of the application in the second working condition.

[0097] As Figures 1 to 4 shown, in some optional embodiments, in the first working condition, the gas in the brake chamber unit 120 flows to the caliper cavity, and part of the gas in the caliper cavity is stored in the gas storage bag 131; and / or,

[0098] In the second working condition, the gas in the gas storage bag 131 flows to the caliper cavity, and the gas in the caliper cavity flows to the brake chamber unit 120.

[0099] It should be noted that at the beginning of braking, the gas at the output end of the brake chamber unit 120 flows to the caliper cavity, and part of the gas in the caliper cavity flows to the gas storage bag 131, at this time, the gas storage cavity of the gas storage bag 131 becomes larger, thereby ensuring the stability of the gas pressure in the caliper cavity.

[0100] After the end of braking, the gas in the gas storage bag 131 flows to the caliper cavity, and the gas in the caliper cavity flows to the brake chamber unit 120 through the output end of the brake chamber unit 120, at this time, the gas storage cavity of the gas storage bag 131 becomes smaller, thereby ensuring the stability of the gas pressure in the caliper cavity.

[0101] In some optional embodiments, the first working condition is a braking start state of the brake assembly 100, and the second working condition is a braking end state of the brake assembly 100.

[0102] It should be noted that in the braking start state of the brake assembly 100, the gas storage bag 131 is used to store the gas in the caliper cavity; in the braking end state of the brake assembly 100, the gas storage bag 131 is used to release the gas in the gas storage cavity.

[0103] As shown in FIG. 1, Figures 1 to 4 In some optional embodiments, the gas charging and discharging unit 130 further includes a shell 132, the gas storage bag 131 is located in the shell 132, the gas storage bag 131 has a gas inlet and outlet end, the gas inlet and outlet end is arranged on the side wall of the shell 132, and the gas inlet and outlet end is in communication with the caliper cavity;

[0104] It should be noted that the shell 132 is used to accommodate the gas storage bag 131, so as to improve the overall strength of the gas charging and discharging unit 130.

[0105] In some examples, the shell 132 can be a metal piece, and the material thereof can include one or more of copper, iron, aluminum, tin, and lead. The material of the casting mold can be one of sand, metal, or ceramic.

[0106] In other examples, the shell 132 can be plastic. When injection molding, the molten plastic is injected into the plastic product mold by pressure, and the required plastic piece is obtained after cooling and forming.

[0107] The injection molding process can be completed by a mechanical injection molding machine, and the material of the shell 132 can include one or more of polyethylene, polypropylene, ABS (acrylonitrile (A), butadiene (B), and styrene (S) ternary copolymer), polyamide, and polystyrene.

[0108] It should be noted that the material of the shell 132 is not limited too much in the embodiments of the present application.

[0109] Of course, in the production process, the shell 132 can also be made of steel plate, plastic or synthetic material under the premise of ensuring strength.

[0110] As shown in Figures 1 to 4 , the gas charging and discharging unit 130 further comprises a gas guide pipe 133, and opposite ends of the gas guide pipe 133 are connected to the gas inlet and outlet end and the forceps body cavity, respectively.

[0111] It should be noted that the gas guide pipe 133 is used to connect the gas inlet and outlet end of the gas storage air bag 131 and the forceps body cavity, so that the gas in the forceps body cavity enters the gas storage cavity of the gas storage air bag 131 through the gas inlet and outlet end of the gas storage air bag 131, or the gas in the gas storage cavity of the gas storage air bag 131 flows to the forceps body cavity through the gas inlet and outlet end of the gas storage air bag 131.

[0112] In some examples, the gas guide pipe 133 is made of soft material, which is convenient for bending.

[0113] As shown in Figures 1 to 4 , in some optional embodiments, the shell 132 is provided with a gas port 1321 which communicates the inner cavity of the shell 132 with the outside of the shell 132.

[0114] It should be noted that the gas port 1321 is used to discharge the gas in the inner cavity of the shell 132 to the outside of the shell 132.

[0115] Specifically, when the braking starts, part of the gas in the forceps body cavity flows to the gas storage air bag 131, at this time, the gas storage cavity of the gas storage air bag 131 becomes larger, and then the volume of the inner cavity of the shell 132 becomes smaller, and the gas in the inner cavity of the shell 132 is discharged to the outside of the shell 132 through the gas port 1321, avoiding the danger of the gas in the shell 132 being unable to be discharged.

[0116] In some examples, the gas port 1321 is a plurality of gas ports 1321 which are arranged on the shell 132 at intervals.

[0117] As shown in Figures 1 to 4 , in some optional embodiments, the gas charging and discharging unit 130 further comprises a connecting assembly, and the connecting assembly comprises a first connecting piece 134, one end of the first connecting piece 134 is arranged at the end of the gas guide pipe 133 facing the forceps body cavity, and the other end of the first connecting piece 134 extends towards the forceps body 111, so that the gas charging and discharging unit 130 and the forceps body 111 are connected.

[0118] It should be noted that the connecting assembly is used to mount the gas charging and discharging unit 130 to the forceps body 111, so as to improve the mounting stability of the gas charging and discharging unit 130.

[0119] In some examples, the first connecting piece 134 can be a metal piece, and the material thereof can include one or more of copper, iron, aluminum, tin and lead.

[0120] It should be noted that the specific material of the first connecting member 134 is not limited here.

[0121] Of course, in the production process, the first connecting member 134 can also be made of steel plate, plastic or synthetic material under the premise of ensuring strength.

[0122] Continuing to refer to Figures 1 to 4 In some optional embodiments, the first connecting member 134 is a plug; and / or,

[0123] The connecting assembly further comprises a second connecting member 135, which is a threaded fastener, and the shell 132 and the jaw body 111 are each provided with a threaded hole 140, and the threaded fastener passes through the plurality of threaded holes 140 in sequence to connect the gas charging and discharging unit 130 and the jaw body 111.

[0124] It should be noted that in order to further improve the installation stability of the gas charging and discharging unit 130, the second connecting member 135 is added.

[0125] It should be noted that in the present application, considering the cost of the second connecting member 135, the second connecting member 135 can be a threaded fastener, and correspondingly, the shell 132 and the jaw body 111 are each provided with a threaded hole 140, the second connecting member 135 can pass through the threaded hole 140, and can be tightened or loosened to adjust the fixed and disassembled state.

[0126] Figure 5 is a structure schematic view of a jaw body unit in a brake assembly provided by the present application, Figure 6 is a structure schematic view of a bushing in a brake assembly provided by the present application, Figure 7 is a structure schematic view of a jaw body in a brake assembly provided by the present application, Figure 8 is a structure schematic view of a push rod in a brake assembly provided by the present application, Figure 9 is a schematic view of airflow flowing in the first working condition of the jaw body unit in a brake assembly provided by the present application, Figure 10 is a schematic view of airflow flowing in the second working condition of the jaw body unit in a brake assembly provided by the present application.

[0127] As Figures 1 to 10 shown, in some optional embodiments, the jaw body unit 110 further comprises a bracket 112, a bushing 113 and a sliding pin 114, the bushing 113 is arranged at the end of the jaw body 111, and the sliding pin 114 is slidingly connected in the bushing 113, the sliding pin 114 and the bracket 112 are fixedly connected, the sliding pin 114 has a sliding pin protective sleeve 1141, one end of the sliding pin protective sleeve 1141 is pressed into the jaw body 111, and the other end of the sliding pin protective sleeve 1141 is fixed on the bracket 112;

[0128] The clamp body 111 has a through hole 1111, which is used to connect the bushing 113 and the clamp body cavity. The bushing 113 has a vent hole 1131, which is connected to the through hole 1111. The vent hole 1131 is used to connect the bushing 113 and the sliding pin protective sleeve 1141, so that the sliding pin protective sleeve 1141 and the clamp body cavity are interconnected.

[0129] Specifically, bushing 113 is pressed into the cylindrical hole on the side of clamp body 111; sliding pin 114 connects bracket 112 to clamp body 111 through locking bolt.

[0130] When braking begins, the sliding pin protection sleeve 1141 is stretched, and the internal air pressure of the sliding pin protection sleeve 1141 decreases. Gas enters the bushing 113 from the clamp body cavity through the through hole 1111 of the clamp body 111, and then enters the sliding pin protection sleeve 1141 through the vent hole 1131 on the bushing 113, preventing air from being drawn out of the sliding pin protection sleeve 1141.

[0131] After braking is completed, the gas inside the sliding pin protective sleeve 1141 enters the clamp body cavity through the vent hole 1131 on the bushing 113 and the through hole 1111 on the clamp body 111 to prevent the sliding pin protective sleeve 1141 from catching air.

[0132] In some examples, the size, shape, and dimensions of the through hole 1111 and the vent hole 1131 are not limited in the embodiments of this application.

[0133] For example, the cross-section of the through hole 1111 can be any shape such as square, ellipse, trapezoid, etc., and the embodiments of this application do not impose specific limitations on this.

[0134] Of course, the cross-section of the vent 1131 may be the same as or different from the cross-section of the through hole 1111. This application embodiment does not impose too many restrictions here.

[0135] like Figures 1 to 10 As shown, in some optional embodiments, the clamp unit 110 further includes a push plate 115, a push rod 116, and a piston 117. The push rod 116 is disposed inside the clamp 111 and is connected to the piston 117. The piston 117 has a piston protective sleeve 1171. One end of the piston protective sleeve 1171 is fixed to the piston 117, and the other end of the piston protective sleeve 1171 is fixed to the push plate 115. The push plate 115 is configured to move relative to the clamp 111 when the brake chamber unit 120 brakes.

[0136] The push rod 116 is connected to the piston protective sleeve 1171. An air guide hole 1161 is provided on the push rod 116. The air guide hole 1161 is used to connect the clamp body cavity and the push rod 116 so that the piston protective sleeve 1171 and the clamp body cavity are interconnected.

[0137] It should be noted that when braking begins, the push plate 115 moves relative to the caliper body 111, the piston protective sleeve 1171 is stretched, the internal air pressure decreases, and the gas in the caliper body cavity enters the piston protective sleeve 1171 through the push rod 116 with the air guide hole 1161, preventing air from being drawn out of the piston protective sleeve 1171.

[0138] In other words, when braking begins, the gas at the output end of the brake chamber unit 120 flows to the caliper cavity. Part of the gas in the caliper cavity flows to the air storage bladder 131 to store the gas in the caliper cavity. Since the internal air pressure of the sliding pin protective sleeve 1141 and the piston protective sleeve 1171 decreases at this time, another part of the gas flows to the sliding pin protective sleeve 1141 and the piston protective sleeve 1171 respectively to prevent air from being drawn out of the sliding pin protective sleeve 1141 and the piston protective sleeve 1171.

[0139] For example, the cross-section of the air guide hole 1161 can be any shape such as square, ellipse, trapezoid, etc., and the embodiments of this application do not impose specific limitations on this.

[0140] like Figures 1 to 10 As shown, it should be noted that after braking ends, the piston protective sleeve 1171 is compressed, and the internal air pressure increases. The gas in the piston protective sleeve 1171 enters the caliper cavity through the push rod 116 with the air guide hole 1161 to prevent the piston protective sleeve 1171 from accumulating air and stretching.

[0141] In other words, after braking ends, the gas in the air reservoir 131 flows to the caliper cavity, and the gas in the caliper cavity flows back to the brake chamber unit 120 through the output end of the brake chamber unit 120. Since the sliding pin protective sleeve 1141 and piston protective sleeve 1171 are compressed at this time, their internal air pressure increases. Therefore, the gas in the sliding pin protective sleeve 1141 and piston protective sleeve 1171 flows to the caliper cavity to prevent the sliding pin protective sleeve 1141 and piston protective sleeve 1171 from being blocked and stretched.

[0142] The brake assembly provided in this application includes a caliper unit, a brake chamber unit, and an inflation / deflation unit. The caliper unit includes a caliper body with a caliper cavity. The input end of the brake chamber unit is connected to an external air source, and the output end of the brake chamber unit is connected to the caliper cavity. The inflation / deflation unit and the brake chamber unit are both disposed on the caliper body, and the inflation / deflation unit and the caliper cavity are interconnected. The inflation / deflation unit includes a gas storage bladder with a variable gas storage cavity. The gas storage bladder is configured to store gas in the caliper cavity under a first operating condition and release the stored gas into the caliper cavity under a second operating condition, so that the gas pressure in the caliper cavity is stable under both the first and second operating conditions.

[0143] By increasing the gas storage bag in the inflation and deflation unit, the gas storage bag has the functions of storage and release, realizes complete isolation of the caliper body cavity in the brake assembly from the outside, and realizes stable air pressure in the caliper body cavity during braking by relying on the gas storage bag in the caliper body cavity, greatly improves the sealing performance of the brake assembly, and enhances the water crossing ability of the brake assembly.

[0144] Embodiment two

[0145] The embodiment of the application also provides a vehicle comprising the brake assembly 100.

[0146] Specifically, the vehicle in the embodiment adopts all the technical solutions of the brake assembly 100 in the foregoing embodiments, and thus has at least all the beneficial effects brought by the technical solutions of the foregoing embodiments, which will not be described here one by one.

[0147] The vehicle provided by the embodiment of the application comprises the brake assembly, by increasing the gas storage bag in the inflation and deflation unit, the gas storage bag has the functions of storage and release, realizes complete isolation of the caliper body cavity in the brake assembly from the outside, and realizes stable air pressure in the caliper body cavity during braking by relying on the gas storage bag in the caliper body cavity, greatly improves the sealing performance of the brake assembly, and enhances the water crossing ability of the brake assembly.

[0148] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.

Claims

1. A brake assembly characterized by, The brake assembly comprises a caliper unit, a brake chamber unit and a charging and discharging unit, the caliper unit comprises a caliper body having a caliper cavity; The input end of the brake chamber unit is connected with an external air source, and the output end of the brake chamber unit is connected with the caliper cavity; The charging and discharging unit and the brake chamber unit are arranged on the caliper body, the charging and discharging unit and the caliper cavity are communicated with each other, and the brake chamber unit and the caliper cavity are communicated with each other; The charging and discharging unit comprises a gas storage bag, the gas storage bag has a variable gas storage cavity, the gas storage bag is configured to store gas in the caliper cavity in a first working condition, and release the stored gas into the caliper cavity in a second working condition, so that the gas pressure of the caliper cavity is stable in the first working condition and the second working condition.

2. The brake assembly of claim 1, wherein, In the first working condition, the gas in the brake chamber unit flows into the caliper cavity, and part of the gas in the caliper cavity is stored in the gas storage bag; and / or, In the second working condition, the gas in the gas storage bag flows into the caliper cavity, and the gas in the caliper cavity flows into the brake chamber unit.

3. The brake assembly of claim 2, wherein, The first working condition is a brake starting state of the brake assembly, and the second working condition is a brake ending state of the brake assembly.

4. The brake assembly of any one of claims 1-3, wherein, The charging and discharging unit further comprises a shell, the gas storage bag is located in the shell, the gas storage bag has a gas inlet and outlet end, the gas inlet and outlet end is arranged on the side wall of the shell, and the gas inlet and outlet end is communicated with the caliper cavity; The charging and discharging unit further comprises a gas guide pipe, opposite ends of the gas guide pipe are connected with the gas inlet and outlet end and the caliper cavity respectively.

5. The brake assembly of claim 4, wherein, The shell is provided with a gas port communicating the inner cavity of the shell with the outside of the shell.

6. The brake assembly of claim 5, wherein, The charging and discharging unit further comprises a connecting assembly, the connecting assembly comprises a first connecting piece, one end of the first connecting piece is arranged at the end of the gas guide pipe facing the caliper cavity, and the other end of the first connecting piece extends towards the caliper body, so that the charging and discharging unit and the caliper body are connected.

7. The brake assembly of claim 6, wherein, The first connecting piece is a plug; and / or, The connecting assembly further comprises a second connecting piece, the second connecting piece is a threaded fastener, threaded holes are arranged on the shell and the caliper body, and the threaded fastener passes through the threaded holes in sequence, so that the charging and discharging unit and the caliper body are connected.

8. The brake assembly of any one of claims 1-3, wherein, The caliper unit further comprises a bracket, a bushing and a sliding pin, the bushing is arranged at the end of the caliper body, the sliding pin is slidingly connected in the bushing, the sliding pin is fixedly connected with the bracket, the sliding pin has a sliding pin protection sleeve, one end of the sliding pin protection sleeve is pressed into the caliper body, and the other end of the sliding pin protection sleeve is fixed on the bracket; The caliper body is provided with a through hole for communicating the bushing with the caliper cavity, the bushing is provided with a gas passage hole, the gas passage hole is communicated with the through hole, and the gas passage hole is used for communicating the bushing with the sliding pin protection sleeve, so that the sliding pin protection sleeve and the caliper cavity are communicated with each other.

9. The brake assembly of claim 8, wherein, The caliper body unit further comprises a push disc, a push rod and a piston, the push rod is arranged in the caliper body, the push rod is connected with the piston, the piston is provided with a piston protection sleeve, one end of the piston protection sleeve is fixed on the piston, and the other end of the piston protection sleeve is fixed on the push disc, and the push disc is configured to move relative to the caliper body when the brake chamber unit brakes. The push rod is connected with the piston protection sleeve, a gas guide hole is arranged on the push rod, and the gas guide hole is used for connecting the caliper body cavity and the push rod, so that the piston protection sleeve and the caliper body cavity are connected with each other.

10. A vehicle characterized by comprising: The brake assembly comprises the brake assembly according to any one of claims 1-9.

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