Hydraulic brake device and vehicle having the same

Abstract

The application discloses a hydraulic braking device and a vehicle with the same, and relates to the technical field of vehicle braking control components. The hydraulic braking device comprises a first caliper assembly, a second caliper assembly and a communication structure. The first caliper assembly comprises a first shell and a first braking piece, and a first cavity is formed between the first shell and the first braking piece. A liquid inlet and a first exhaust port are arranged on the first shell, and the liquid inlet and the first exhaust port are both in communication with the inside of the first cavity. The second caliper assembly comprises a second shell and a second braking piece, and a second cavity is formed between the second shell and the second braking piece. The second braking piece is arranged opposite to the first braking piece in a first direction. At least one second exhaust port is arranged on the first shell, and the second exhaust port is in communication with the inside of the second cavity. One end of the communication structure is in communication with the inside of the first cavity, and the other end of the communication structure is in communication with the inside of the second cavity. The hydraulic braking device can improve the sensitivity and stability of braking.

Description

Technical Field

[0001] This invention relates to the technical field of vehicle braking control components, and more specifically, to a hydraulic braking device and a vehicle having the same. Background Technology

[0002] Hydraulic brake calipers are the actuators of braking systems in construction machinery, agricultural equipment, and special vehicles. Their braking response speed, operational reliability, and adaptability to extreme working conditions directly determine the overall vehicle safety. Currently, hydraulic brake calipers in related technologies include a caliper body, a hydraulic drive circuit, and a friction pad assembly. The caliper body is equipped with a venting structure. During braking, brake fluid is injected into the caliper body. The brake fluid pushes a piston, which in turn causes the friction pads to press against the brake disc, achieving service braking. While the brake fluid is being injected into the caliper body, the venting structure removes air bubbles from the brake fluid to ensure stable transmission of braking pressure. However, because the venting structure of a hydraulic brake caliper has only one vent opening in a single direction, dead zones can easily form when the vehicle is in tilting or pitching positions (such as construction machinery climbing hills or agricultural equipment operating in the field). Residual air bubbles in the brake fluid cannot be completely expelled, leading to reduced braking sensitivity and stability. In extreme conditions, this can even result in brake failure, resulting in lower vehicle safety performance. Summary of the Invention

[0003] In view of this, the object of the present invention is to provide a hydraulic braking device and a vehicle having the same, wherein the hydraulic braking device of the present invention can improve the sensitivity and stability of braking, thereby making the hydraulic braking device have higher safety performance.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] The hydraulic braking device of the present invention includes: a first caliper assembly, the first caliper assembly including a first housing and a first braking member, a first chamber being formed between the first housing and the first braking member; the first braking member being movable relative to the first housing in a first direction; the first housing being provided with an inlet and a first vent, both of which are in communication with the interior of the first chamber; a second caliper assembly, the second caliper assembly including a second housing and a second braking member, a second chamber being formed between the second housing and the second braking member; the second braking member being disposed opposite to the first braking member in the first direction, and the second braking member being movable relative to the second housing in the first direction; the second housing being provided with at least one second vent, the second vent being in communication with the interior of the second chamber; and a connecting structure, one end of which is in communication with the interior of the first chamber, and the other end of which is in communication with the interior of the second chamber.

[0006] In some embodiments, the first exhaust port and the liquid inlet are spaced apart around the axial direction of the first chamber; the axial direction of the first chamber is consistent with the first direction;

[0007] There are multiple second exhaust ports, which are spaced apart around the axial direction of the second chamber; the opening direction of one second exhaust port forms an angle with the opening direction of another second exhaust port; the axial direction of the second chamber is consistent with the first direction.

[0008] In some embodiments, the first vent port and the liquid inlet port are disposed opposite each other in a second direction, and the second direction is perpendicular to the first direction;

[0009] There are two second exhaust ports, which are arranged opposite each other in the second direction.

[0010] In some embodiments, the connecting structure is a pipe, and one end of the connecting structure is located between the first exhaust port and the liquid inlet.

[0011] The other end of the connecting structure is located between the two second exhaust ports.

[0012] In some embodiments, the hydraulic braking device further includes:

[0013] A first drive assembly includes a first rotating member, a first rotating arm, and a first transmission structure. The first rotating member is disposed in the first chamber and is rotatable about the axial direction of the first chamber. The first rotating arm is connected to the first rotating member. The first transmission structure is disposed in the first chamber and is connected to the first braking member. The first transmission structure is configured to convert the rotation of the first rotating member into the movement of the first braking member along the first direction.

[0014] The second drive assembly includes a second rotating member, a second rotating arm, and a second transmission structure. The second rotating member is disposed in the second chamber and is rotatable about the axial direction of the second chamber. The second rotating arm is connected to the second rotating member. The second transmission structure is disposed in the second chamber and is connected to the second braking member. The second transmission structure is configured to convert the rotation of the second rotating member into the movement of the second braking member along the first direction.

[0015] In some embodiments, the first transmission structure includes a first transmission member, a first pushing member, and a first sliding member; the first transmission member is connected to the first rotating member, and the first transmission member is threadedly connected to the first pushing member; a first elastic member is connected between the first pushing member and the first sliding member; the first sliding member is capable of abutting against the first braking member.

[0016] The second transmission structure includes a second transmission member, a second pushing member, and a second sliding member; the second transmission member is connected to the second rotating member, and the second transmission member is threadedly connected to the second pushing member; a second elastic member is connected between the second pushing member and the second sliding member; the second sliding member can abut against the second braking member.

[0017] In some embodiments, the first rotating member is provided with a first groove; the first transmission structure includes a first slider and a first ball, the first slider is movable along the axial direction of the first chamber, and the first slider contacts the first braking member; the first slider is provided with a second groove, the second groove corresponding to the first groove, the first ball is disposed between the first groove and the second groove, and the depth of at least one end of the second groove decreases circumferentially in the first chamber; a third elastic member is disposed between the first slider and the first chamber, the third elastic member being used to provide a force to the first slider that approaches the first rotating member;

[0018] The second rotating member is provided with a third groove; the second transmission structure includes a second slider and a second ball, the second slider is axially movable along the second chamber, and the second slider is in contact with the second braking member; the second slider is provided with a fourth groove, the fourth groove corresponding to the third groove, the second ball is disposed between the third groove and the fourth groove, and the depth of at least one end of the fourth groove decreases in the circumferential direction of the second chamber; a fourth elastic member is disposed between the second slider and the second chamber, the fourth elastic member being used to provide a force to the second slider that approaches the second rotating member.

[0019] In some embodiments, the inner wall surface of the first groove and the inner wall surface of the second groove are both arc surfaces;

[0020] The inner wall surfaces of the third groove and the fourth groove are both arc surfaces.

[0021] In some embodiments, a connecting arm is connected between the first housing and the second housing;

[0022] A guide rod is connected between the first housing and the second housing, and the extension direction of the guide rod is consistent with the first direction; the first braking member has a first mating part, which is connected to the guide rod and moves along the first direction; the second braking member has a second mating part, which is connected to the guide rod and moves along the first direction.

[0023] The vehicle of the present invention includes: a hydraulic braking device, wherein the hydraulic braking device is any one of the hydraulic braking devices described above; and a brake disc body disposed between the first braking member and the second braking member.

[0024] The hydraulic braking device of the present invention has a first housing with a first vent port communicating with a first chamber within the first housing, and a second housing with a second vent port communicating with a second chamber within the second housing. This allows the first and second vent ports to form independent venting structures. The hydraulic braking device of this embodiment can vent through both the first and second vent ports, so that when the vehicle is in a tilting or pitching position, and if one of the first or second vent ports cannot vent normally, the other vent port can promptly expel air bubbles from the brake fluid. Therefore, this improves the braking sensitivity and stability of the hydraulic braking device of this embodiment, which is beneficial for improving vehicle safety performance.

[0025] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0027] Figure 1 This is a schematic structural diagram of the hydraulic braking device according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic cross-sectional structural diagram of the hydraulic braking device according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic cross-sectional view of the hydraulic braking device according to another embodiment of the present invention.

[0030] Figure 4This is a schematic cross-sectional structural diagram of the first caliper assembly according to an embodiment of the present invention;

[0031] Figure 5 This is a schematic cross-sectional view of the second caliper assembly according to an embodiment of the present invention;

[0032] Figure 6 This is a schematic structural diagram of the first caliper assembly according to another embodiment of the present invention;

[0033] Figure 7 This is a schematic structural diagram of the second caliper assembly according to another embodiment of the present invention;

[0034] Figure 8 This is a schematic structural diagram of the first and second sliders according to an embodiment of the present invention;

[0035] Figure 9 This is a schematic structural diagram of the first rotating member and the second rotating member according to an embodiment of the present invention.

[0036] Figure label:

[0037] 100. First caliper assembly; 110. First housing; 111. Liquid inlet; 112. First vent; 120. First braking element; 130. First chamber; 140. First rotating element; 141. First groove; 150. First rotating arm; 160. First transmission structure; 161. First transmission element; 162. First pushing element; 163. First sliding element; 164. First slider; 165. First ball; 167. Second groove; 200 210. Second caliper assembly; 211. Second housing; 212. Second exhaust port; 223. Second brake element; 234. Second chamber; 245. Second rotating element; 246. Third groove; 250. Second rotating arm; 267. Second transmission structure; 261. Second transmission element; 262. Second push element; 263. Second sliding element; 264. Second slider; 265. Second ball; 266. Fourth groove; 310. Connecting arm; 320. Guide rod. Detailed Implementation

[0038] 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, and 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.

[0039] The hydraulic braking device of the present invention will now be described with reference to the accompanying drawings.

[0040] like Figures 1-5As shown, the hydraulic braking device of this embodiment of the invention includes a first caliper assembly 100, a second caliper assembly 200, and a connecting structure.

[0041] The first caliper assembly 100 includes a first housing 110 and a first brake member 120, with a first chamber 130 formed between the first housing 110 and the first brake member 120. The first brake member 120 is configurable relative to the first housing 110 along a first direction (e.g., ...). Figure 3 The first housing 110 is provided with a liquid inlet 111 and a first vent 112, both of which communicate with the interior of the first chamber 130. The second caliper assembly 200 includes a second housing 210 and a second braking member 220, forming a second chamber 230 between the second housing 210 and the second braking member 220. The second braking member 220 is disposed opposite to the first braking member 120 in a first direction, and the second braking member 220 is movable relative to the second housing 210 in the first direction. The second housing 210 is provided with at least one second vent 211, which communicates with the interior of the second chamber 230. One end of the communication structure communicates with the interior of the first chamber 130, and the other end communicates with the interior of the second chamber 230.

[0042] Brake fluid enters the first chamber 130 through inlet 111, causing it to push the first brake element 120 to move in the first direction. A portion of the brake fluid flows into the second chamber 230 through the connecting structure, causing the brake fluid in the second chamber 230 to push the second brake element 220 to move in the first direction, allowing the first and second brake elements 120 to approach each other and clamp the brake disc. The first vent 112 and the second vent 211 are both used to expel residual air bubbles from the brake fluid.

[0043] In this embodiment of the hydraulic braking device, a first housing 110 is provided with a first vent 112, which communicates with a first chamber 130 within the first housing 110. A second housing 210 is provided with a second vent 211, which communicates with a second chamber 230 within the second housing 210. This allows the first vent 112 and the second vent 211 to form independent venting structures. Compared to the single vent structure of hydraulic braking devices in related technologies, this embodiment allows for venting through both the first vent 112 and the second vent 211. Therefore, when the vehicle is in a tilting or pitching position, and if one of the first vent 112 or the second vent 211 cannot vent normally, the other vent 112 or the second vent 211 can promptly expel air bubbles from the brake fluid. This improves the braking sensitivity and stability of the hydraulic braking device, thus enhancing vehicle safety.

[0044] In some embodiments, the first braking member 120 includes a first piston portion and a first braking portion sequentially connected in a first direction. The first braking portion is disposed outside the first housing 110, and the first piston portion is movably inserted into the first housing 110 along the first direction to form a first chamber 130. When brake fluid is injected into the first chamber 130, the brake fluid pushes the first piston portion to move closer to the second braking member 220. The second braking member 220 includes a second piston portion and a second braking portion sequentially connected in a first direction. The second braking portion is disposed outside the second housing 210, and the second piston portion is movably inserted into the second housing 210 along the first direction to form a second chamber 230. When brake fluid is injected into the first chamber 130, a portion of the brake fluid flows into the second chamber 230 through the connecting structure and pushes the second piston portion to move closer to the first braking member 120, so that the first braking portion and the second braking portion move closer to each other, thereby allowing the first braking portion and the second braking portion to abut against the brake disc body to achieve a braking effect.

[0045] In some embodiments, an elastic member is connected between the first brake member 120 and the second brake member 220. The elastic member is used to provide a force that moves the first brake member 120 and the second brake member 220 away from each other, so as to realize the automatic reset of the first brake member 120 and the second brake member 220 by means of the elastic member.

[0046] Furthermore, a connecting arm 310 is connected between the first housing 110 and the second housing 210; a guide rod 320 is connected between the first housing 110 and the second housing 210, and the extending direction of the guide rod 320 is consistent with the first direction; the first braking member 120 has a first mating part, which is connected to the guide rod 320 and moves along the first direction; the second braking member 220 has a second mating part, which is connected to the guide rod 320 and moves along the first direction. This makes the structure of the hydraulic braking device in this embodiment more stable.

[0047] In some embodiments, the first exhaust port 112 and the liquid inlet 111 are spaced apart axially around the first chamber 130; the axial direction of the first chamber 130 is aligned with the first direction. Multiple second exhaust ports 211 are arranged spaced apart axially around the second chamber 230. The opening direction of one second exhaust port 211 forms an angle with the opening direction of another second exhaust port 211. The axial direction of the second chamber 230 is aligned with the first direction. The multiple second exhaust ports 211 are arranged spaced apart axially around the second chamber 230, and the opening directions of each second exhaust port 211 form an angle. That is, multiple exhaust structures are provided circumferentially around the second chamber 230, thereby ensuring that at least one second exhaust port 211 is capable of venting when the vehicle is in a longitudinal climbing, lateral tilting, or other tilting posture, thus further improving the braking sensitivity and stability of the hydraulic braking device of this embodiment.

[0048] In some alternative embodiments, the included angle between the central axes of adjacent second exhaust ports 211 can be 45°, 60°, 90°, 120° or 180°.

[0049] Specifically, such as Figures 2-5 As shown, the first exhaust port 112 and the liquid inlet 111 are in the second direction (e.g.) Figure 3 The first vent 112 and the inlet 111 are positioned opposite each other in the second direction, and the second direction is perpendicular to the first direction. That is, when the brake fluid is injected into the first chamber 130 through the inlet 111, the brake fluid is more likely to collect at the first vent 112, so that the air bubbles in the brake fluid can be discharged to the outside more smoothly, thereby improving the venting efficiency of the first chamber 130.

[0050] There are two second exhaust ports 211, which are arranged opposite each other in the second direction. That is, because the second housing 210 has two second exhaust ports 211 arranged opposite each other in the second direction, even when the vehicle is tilted, pitched, or rolled, at least one second exhaust port 211 is located at a relatively high position in the second chamber 230, thus avoiding the formation of exhaust dead zones. Especially when the vehicle is operating on slopes or driving on rugged terrain, at least one of the two second exhaust ports 211 can exhaust air, allowing air bubbles in the brake fluid in the first chamber 130 and / or the second chamber 230 to be smoothly discharged. Furthermore, the number of second exhaust ports 211 is reduced, lowering the difficulty of manufacturing.

[0051] In some embodiments, such as Figure 1As shown, the connecting structure is a tube, with one end located between the first vent 112 and the inlet 111, and the other end located between the two second vents 211. In other words, the inlet end of the connecting structure is between the first vent 112 and the inlet 111, and the outlet end is between the two second vents 211. Positioning the outlet end of the connecting structure between the two second vents 211 allows brake fluid to be injected from the middle region of the second chamber 230, facilitating more even diffusion of the brake fluid into the second chamber 230 and promoting rapid pressure equalization within the second chamber 230. This avoids the problem of insufficient gas expulsion from the second chamber 230 due to brake fluid injection only from the first chamber 130, thus enhancing the venting effect of the second vents 211.

[0052] In some embodiments, such as Figures 2-7 As shown, the hydraulic braking device in this embodiment of the invention further includes a first drive assembly and a second drive assembly.

[0053] The first drive assembly includes a first rotating member 140, a first rotating arm 150, and a first transmission structure 160. The first rotating member 140 is disposed in a first chamber 130 and is rotatable about the axial direction of the first chamber 130. The first rotating arm 150 is connected to the first rotating member 140 for synchronous rotation. The first transmission structure 160 is disposed in the first chamber 130 and is drively connected to a first braking member 120. The first transmission structure 160 is configured to convert the rotation of the first rotating member 140 into movement of the first braking member 120 along a first direction. The second drive assembly includes a second rotating member 240, a second rotating arm 250, and a second transmission structure 260. The second rotating member 240 is disposed in a second chamber 230 and is rotatable about the axial direction of the second chamber 230. The second rotating arm 250 is connected to the second rotating member 240 for synchronous rotation. The second transmission structure 260 is disposed in the second chamber 230 and is connected to the second brake member 220. The second transmission structure 260 is configured to convert the rotation of the second rotating member 240 into the movement of the second brake member 220 in the first direction.

[0054] In other words, the operator can apply external force to the first rotating arm 150 and the second rotating arm 250 to pull them to rotate around the axial direction of the first chamber 130 and the axial direction of the second chamber 230, respectively. During the rotation of the first rotating arm 150 and the second rotating arm 250, the first rotating arm 150 drives the first transmission structure 160 to move the first brake 120 along a first direction, causing the first brake 120 to move closer to the second brake 220. Similarly, the second rotating arm 250 drives the second transmission structure 260 to move the second brake 220 along the first direction, causing the second brake 220 to move closer to the first brake 120. This causes the first and second brake parts to press against the brake disc, thereby achieving mechanical braking. This avoids brake failure caused by hydraulic system malfunctions.

[0055] Furthermore, such as Figure 4 As shown, the first transmission structure 160 includes a first transmission member 161, a first pushing member 162, and a first sliding member 163. The first transmission member 161 is connected to the first rotating member 140, and the first transmission member 161 is threadedly connected to the first pushing member 162. A first elastic member is connected between the first pushing member 162 and the first sliding member 163, and the first sliding member 163 can abut against the first braking member 120.

[0056] During normal hydraulic braking, the first piston moves under hydraulic pressure, and the first pusher 162, the first elastic member, and the first sliding member 163 do not generate additional thrust. When braking is performed using the first drive assembly, the first rotating arm 150 drives the first transmission member 161 to rotate. Since the first transmission member 161 and the first pusher 162 are connected by a threaded transmission, and the first pusher 162 can only move in the first direction, when the first transmission member 161 rotates, the threaded structure between the first transmission member 161 and the first pusher 162 causes the first pusher 162 to move in the first direction. This causes the first pusher 162 to sequentially drive the first sliding member 163 and the first brake member 120 to move along with the first pusher 162, so that the first brake member 120 can move towards the second brake member 220. When the first transmission member 161 rotates and drives the first sliding member 163 to move away from the second braking member 220, the first sliding member 163 can move away from the second braking member 220 through the elastic force of the first elastic member, so as to realize the reset of the first sliding member 163.

[0057] like Figure 5As shown, the second transmission structure 260 includes a second transmission member 261, a second pushing member 262, and a second sliding member 263. The second transmission member 261 is connected to the second rotating member 240, and the second transmission member 261 is threadedly connected to the second pushing member 262. A second elastic member connects the second pushing member 262 and the second sliding member 263, and the second sliding member 263 can abut against the second braking member 220. Similarly, when the second transmission member 261 rotates, the threaded structure between the second transmission member 261 and the second pushing member 262 causes the second pushing member 262 to move along a first direction, thereby causing the second pushing member 262 to sequentially drive the second sliding member 263 and the second braking member 220 to move with the second pushing member 262, so that the second braking member 220 can move towards the first braking member 120. When the second transmission member 261 rotates and drives the second sliding member 263 to move away from the first brake member 120, the second sliding member 263 can move away from the first brake member 120 through the elastic force of the second elastic member, so as to realize the reset of the second sliding member 263.

[0058] In other words, when the hydraulic system malfunctions or the pressure fails, the operator can use the first drive assembly and the second drive assembly to drive the first brake 120 and the second brake 220 to move closer to each other, so that the first brake 120 and the second brake 220 press against the brake disc body, thereby achieving a braking effect.

[0059] Furthermore, when the first braking part of the first brake member 120 and / or the second braking part of the second brake member 220 wear out, the first transmission structure 160 and the second transmission structure 260 can be used to actively compensate for the first brake member 120 and the second brake member 220, so as to ensure that the first brake member 120 and the second brake member 220 can be tightly pressed against the brake disc body in the braking state.

[0060] Furthermore, anti-rotation structures are provided between the first pushing member 162 and the first housing 110, and between the second pushing member 262 and the second housing 210, so that both the first pushing member 162 and the second pushing member 262 can only move along the first direction and cannot rotate. For example, both the first housing 110 and the second housing 210 have grooves extending along the first direction, and the first pushing member 162 and the second pushing member 262 are respectively provided with sliding parts that cooperate with the corresponding grooves, so that the first pushing member 162 and the second pushing member 262 can move along the first direction.

[0061] Furthermore, such as Figures 2-5As shown, the first transmission member 161 is a straight rod extending along a first direction. The first transmission member 161 includes a first transmission section and a first guide section. The outer circumferential surface of the first transmission section is provided with a first internal thread. The first pushing member 162 is provided with a first through hole, and the inner wall surface of the first through hole is provided with a first external thread that mates with the first internal thread. The first sliding member 163 passes through the first guide section and is capable of sliding relative to the first guide section. The second transmission member 261 is a straight rod extending along a first direction. The second transmission member 261 includes a second transmission section and a second guide section. The outer circumferential surface of the second transmission section is provided with a second internal thread. The second pushing member 262 is provided with a second through hole, and the inner wall surface of the second through hole is provided with a second external thread that mates with the second internal thread. The second sliding member 263 passes through the second guide section and is capable of sliding relative to the second guide section.

[0062] In other words, the first guide section guides the first sliding member 163, enabling it to move precisely in the first direction and preventing it from deviating or jamming during movement. This ensures smooth transmission of the first drive assembly and improves reliability. Furthermore, since both the first external thread and the first guide section are integrated into the first transmission member 161, the structural redundancy of the first caliper assembly 100 in this embodiment is reduced, which helps to lower the overall size of the hydraulic braking device in this embodiment. Similarly, the second transmission member 261 enables smooth transmission of the second drive assembly, improving reliability and reducing the structural redundancy of the second caliper assembly 200, which also helps to lower the overall size of the hydraulic braking device in this embodiment.

[0063] In other embodiments, such as Figures 6-9 As shown, the first rotating member 140 is provided with a first groove 141; the first transmission structure 160 includes a first slider 164 and a first ball 165. The first slider 164 is movable along the axial direction of the first chamber 130 and is in contact with the first braking member 120. The first slider 164 is provided with a second groove 167, which corresponds to the first groove 141. The first ball 165 is disposed between the first groove 141 and the second groove 167, and the depth of at least one end of the second groove 167 decreases circumferentially in the first chamber 130. A third elastic member is disposed between the first slider 164 and the first chamber 130, and the third elastic member is used to provide a force to the first slider 164 that approaches the first rotating member 140.

[0064] When braking is applied using the first drive assembly, the first rotating arm 150 drives the first rotating member 140 to rotate, and the wall of the first groove 141 of the first rotating member 140 pushes the first ball 165 to move within the second groove 167. Since the depth of at least one end of the second groove 167 decreases circumferentially in the first chamber 130, when the first ball 165 approaches that end of the second groove 167, it pushes the first slider 164 to move away from the first rotating member 140. The first brake member 120 follows the movement of the first slider 164, allowing the first brake member 120 to move towards the second brake member 220. When the first rotating arm 150 is not driven by an external force, the third elastic member provides elastic force to reset the first slider 164.

[0065] The second rotating member 240 is provided with a third groove 241; the second transmission structure 260 includes a second slider 264 and a second ball 265. The second slider 264 is axially movable along the second chamber 230 and is in contact with the second braking member 220. The second slider 264 is provided with a fourth groove 267, which corresponds to the third groove 241. The second ball 265 is disposed between the third groove 241 and the fourth groove 267, and the depth of at least one end of the fourth groove 267 decreases circumferentially in the second chamber 230. A fourth elastic member is disposed between the second slider 264 and the second chamber 230, and the fourth elastic member is used to provide a force to the second slider 264 that approaches the second rotating member 240.

[0066] When braking is applied using the second drive assembly, the second rotating arm 250 drives the second rotating member 240 to rotate, and the wall of the third groove 241 of the second rotating member 240 pushes the second ball 265 to move within the fourth groove 267. Since the depth of at least one end of the fourth groove 267 decreases axially in the second chamber 230, when the second ball 265 approaches that end of the fourth groove 267, the second ball 265 pushes the second slider 264 to move away from the second rotating member 240, and the second brake member 220 moves along with the second slider 264, allowing the second brake member 220 to move closer to the first brake member 120. When the second rotating arm 250 is not driven by an external force, the fourth elastic member provides elastic force to reset the second slider 264.

[0067] Specifically, such as Figure 8 As shown, the second groove 167 includes a first end and a second end disposed opposite to each other in the axial direction of the first chamber 130. The depth of the first end decreases in the direction away from the second end, and the depth of the second end decreases in the direction away from the first end. The fourth groove 267 includes a third end and a fourth end disposed opposite to each other in the axial direction of the second chamber 230. The depth of the first end decreases in the direction away from the second end, and the depth of the second end decreases in the direction away from the first end.

[0068] Furthermore, the inner wall surfaces of the first groove 141 and the second groove 167 are both arc surfaces.

[0069] The inner walls of the third groove 241 and the fourth groove 267 are both arc surfaces. This increases the contact area between the first groove 141 and the second groove 167 and the first sphere 165, thus preventing the first sphere 165 from deforming due to excessive local stress. Similarly, the fact that the inner walls of the third groove 241 and the fourth groove 267 are both arc surfaces also increases the contact area between the inner walls of the third groove 241 and the fourth groove 267 and the second sphere 265, thus preventing the second sphere 265 from deforming due to excessive local stress.

[0070] Furthermore, such as Figure 7 and Figure 8 As shown, there are multiple first grooves 141 and multiple second grooves 167, all spaced apart circumferentially along the first chamber 130. The multiple first grooves 141 and multiple second grooves 167 are arranged in a one-to-one correspondence. There are multiple first spheres 165, each disposed between a corresponding first groove 141 and second groove 167. This ensures that the first rotating member 140 and the first slider 164 experience uniform force during transmission, improving the stability of the first slider 164's movement.

[0071] Multiple third grooves 241 and multiple fourth grooves 267 are provided, and they are all spaced apart circumferentially along the second chamber 230. The multiple third grooves 241 and multiple fourth grooves 267 are arranged in a one-to-one correspondence. Multiple second spheres 265 are provided, each second sphere 265 being disposed between a corresponding third groove 241 and a fourth groove 267. This ensures that the second rotating member 240 and the second slider 264 experience uniform force during transmission, improving the stability of the movement of the second slider 264. In some embodiments, a first sealing member is provided between the inner wall surface of the first sliding member 163 and the first transmission member 161. The first sealing member is installed in a sealing groove opened on the inner wall surface of the first sliding member 163 and forms a seal with the smooth surface of the first guide section. A second sealing member is provided between the outer peripheral surface of the first sliding member 163 and the inner wall surface of the first chamber 130. The second sealing member is installed in a sealing groove opened on the outer peripheral surface of the first sliding member 163 and forms a seal with the inner wall of the first chamber 130. The second seal isolates the first chamber 130 from the mechanical drive chamber containing components such as the first rotating member 140 and the first rotating arm 150, thereby preventing brake fluid from leaking to the outside along the outer periphery of the first sliding member 163. A third seal is provided between the inner wall surface of the second sliding member 263 and the second transmission member 261. The third seal is installed in a sealing groove opened on the inner wall surface of the second sliding member 263 and forms a seal with the smooth surface of the second guide section. A fourth seal is provided between the outer peripheral surface of the second sliding member 263 and the inner wall surface of the second chamber 230. The fourth seal is installed in a sealing groove opened on the outer peripheral surface of the second sliding member 263 and forms a seal with the inner wall of the second chamber 230. The fourth seal isolates the second chamber 230 from the mechanical drive chamber containing components such as the second rotating member 240 and the second rotating arm 250, thereby preventing brake fluid from leaking to the outside along the outer periphery of the second sliding member 263. This improves the sealing performance of the first chamber 130 and the second chamber 230 of the hydraulic braking device in this embodiment, prevents brake fluid leakage, and further improves the sensitivity and stability of the hydraulic braking device in this embodiment.

[0072] The vehicle in this embodiment of the invention includes a hydraulic braking device and a brake disc body. The hydraulic braking device is the hydraulic braking device of any of the above embodiments, and the brake disc body is disposed between the first braking member 120 and the second braking member 220.

[0073] In this embodiment of the vehicle, the first housing 110 of the hydraulic braking device is provided with a first vent 112, which communicates with a first chamber 130 within the first housing 110. The second housing 210 is provided with a second vent 211, which communicates with a second chamber 230 within the second housing 210. This allows the first vent 112 and the second vent 211 to form independent venting structures. Compared to the single vent structure of hydraulic braking devices in related technologies, the hydraulic braking device of this embodiment can vent through both the first vent 112 and the second vent 211. Therefore, when the vehicle is in a tilting or pitching position, and if one of the first vent 112 or the second vent 211 cannot vent normally, the other vent 112 or the second vent 211 can promptly expel air bubbles from the brake fluid. This improves the braking sensitivity and stability of the hydraulic braking device of this embodiment, thus enhancing vehicle safety.

[0074] The hydraulic braking device and the vehicle having the same provided by this invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A hydraulic braking device, characterized in that, include: A first caliper assembly (100) includes a first housing (110) and a first brake member (120), with a first chamber (130) formed between the first housing (110) and the first brake member (120); the first brake member (120) is movable relative to the first housing (110) in a first direction; the first housing (110) is provided with a liquid inlet (111) and a first vent (112), both of which communicate with the interior of the first chamber (130); A second caliper assembly (200) includes a second housing (210) and a second brake member (220), with a second chamber (230) formed between the second housing (210) and the second brake member (220); the second brake member (220) is disposed opposite to the first brake member (120) in a first direction, and the second brake member (220) is movable relative to the second housing (210) in a first direction; the second housing (210) is provided with at least one second exhaust port (211), and the second exhaust port (211) communicates with the interior of the second chamber (230); A connecting structure, one end of which is connected to the interior of the first chamber (130), and the other end of which is connected to the interior of the second chamber (230); The first exhaust port (112) and the liquid inlet (111) are spaced apart from each other around the axial direction of the first chamber (130); the axial direction of the first chamber (130) is consistent with the first direction; There are multiple second exhaust ports (211), and the multiple second exhaust ports (211) are spaced apart around the axial direction of the second chamber (230); the opening direction of one second exhaust port (211) forms an angle with the opening direction of another second exhaust port (211); the axial direction of the second chamber (230) is consistent with the first direction; A first drive assembly includes a first rotating member (140), a first rotating arm (150), and a first transmission structure (160). The first rotating member (140) is disposed in the first chamber (130) and is rotatable about the axial direction of the first chamber (130). The first rotating arm (150) is connected to the first rotating member (140). The first transmission structure (160) is disposed in the first chamber (130) and is connected to the first braking member (120). The first transmission structure (160) is configured to convert the rotation of the first rotating member (140) into the movement of the first braking member (120) along the first direction. The second drive assembly includes a second rotating member (240), a second rotating arm (250), and a second transmission structure (260). The second rotating member (240) is disposed in the second chamber (230) and is rotatable about the axial direction of the second chamber (230). The second rotating arm (250) is connected to the second rotating member (240). The second transmission structure (260) is disposed in the second chamber (230) and is connected to the second brake member (220). The second transmission structure (260) is configured to convert the rotation of the second rotating member (240) into the movement of the second brake member (220) along the first direction.

2. The hydraulic braking device according to claim 1, characterized in that, The first exhaust port (112) and the liquid inlet (111) are arranged opposite to each other in a second direction, which is perpendicular to the first direction; There are two second exhaust ports (211), which are arranged opposite to each other in the second direction.

3. The hydraulic braking device according to claim 2, characterized in that, The connecting structure is a pipe, and one end of the connecting structure is located between the first exhaust port (112) and the liquid inlet (111); The other end of the connecting structure is located between the two second exhaust ports (211).

4. The hydraulic braking device according to claim 1, characterized in that, The first transmission structure (160) includes a first transmission member (161), a first pushing member (162), and a first sliding member (163); the first transmission member (161) is connected to the first rotating member (140), and the first transmission member (161) is threadedly connected to the first pushing member (162); a first elastic member is connected between the first pushing member (162) and the first sliding member (163); the first sliding member (163) can abut against the first braking member (120); The second transmission structure (260) includes a second transmission member (261), a second pushing member (262), and a second sliding member (263); the second transmission member (261) is connected to the second rotating member (240), and the second transmission member (261) is threadedly connected to the second pushing member (262); a second elastic member is connected between the second pushing member (262) and the second sliding member (263); the second sliding member (263) can abut against the second braking member (220).

5. The hydraulic braking device according to claim 1, characterized in that, The first rotating member (140) is provided with a first groove (141); the first transmission structure (160) includes a first slider (164) and a first ball (165), the first slider (164) is axially movable along the first chamber (130), and the first slider (164) is in contact with the first braking member (120); the first slider (164) is provided with a second groove (167), the second groove (167) corresponds to the first groove (141), the first ball (165) is disposed between the first groove (141) and the second groove (167), and the depth of at least one end of the second groove (167) decreases circumferentially in the first chamber (130); a third elastic member is disposed between the first slider (164) and the first chamber (130), the third elastic member being used to provide a force to the first slider (164) close to the first rotating member (140); The second rotating member (240) is provided with a third groove (241); the second transmission structure (260) includes a second slider (264) and a second ball (265), the second slider (264) is axially movable along the second chamber (230), and the second slider (264) is in contact with the second braking member (220); the second slider (264) is provided with a fourth groove (267), the fourth groove (267) corresponds to the third groove (241), the second ball (265) is disposed between the third groove (241) and the fourth groove (267), and the depth of at least one end of the fourth groove (267) decreases circumferentially in the second chamber (230); a fourth elastic member is disposed between the second slider (264) and the second chamber (230), the fourth elastic member is used to provide a force to the second slider (264) close to the second rotating member (240).

6. The hydraulic braking device according to claim 5, characterized in that, The inner wall surfaces of the first groove (141) and the second groove (167) are both arc surfaces; The inner wall surfaces of the third groove (241) and the fourth groove (267) are both arc surfaces.

7. The hydraulic braking device according to claim 1, characterized in that, A connecting arm (310) is connected between the first housing (110) and the second housing (210); A guide rod (320) is connected between the first housing (110) and the second housing (210), and the extension direction of the guide rod (320) is consistent with the first direction; the first braking member (120) has a first mating part, which is connected to the guide rod (320) and moves along the first direction; the second braking member (220) has a second mating part, which is connected to the guide rod (320) and moves along the first direction.

8. A vehicle, characterized in that, include: A hydraulic braking device, wherein the hydraulic braking device is the hydraulic braking device according to any one of claims 1-7; The brake disc body is disposed between the first brake member (120) and the second brake member (220).

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