Brake cylinder, brake system and vehicle

Abstract

A brake cylinder (100). The brake cylinder (100) comprises a cylinder body (30), a piston (10) and a displacement signal generator (20). The cylinder body (30) is provided with a hydraulic chamber (31); the piston (10) is movably arranged in the hydraulic chamber (31); the displacement signal generator (20) is arranged on the side of the piston (10) close to the hydraulic chamber (31); and the displacement signal generator (20) moves along with the piston (10) and outputs displacement information of the piston (10). Further provided are a brake system (1000) and a vehicle (2000).

Description

Brake cylinders, braking systems and vehicles

[0001] This application claims priority to Chinese patent application No. 202421231453.0, filed on May 30, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of braking technology, and more particularly to a brake cylinder, a braking system, and a vehicle. Background Technology

[0003] With the continuous development of vehicle technology, the reliability and performance requirements of braking systems are also increasing. The brake cylinder is a key component of the braking system. Its main function is to convert mechanical force and the assistance of the vacuum booster into hydraulic power, and then transmit the hydraulic power to the braking system. Summary of the Invention

[0004] This disclosure aims to at least address one of the technical problems existing in the related art. To this end, this disclosure proposes a brake cylinder in which the piston can provide mounting space for a displacement signal generator. By making reasonable use of space, the cylinder can be made more compact, the distance between the displacement signal generator and the displacement signal receiver can be reduced, and the number of parts related to the displacement signal generator can be reduced, thereby reducing costs.

[0005] This disclosure further proposes a braking system.

[0006] This disclosure also proposes a vehicle.

[0007] A brake cylinder according to a first aspect embodiment of the present disclosure includes a cylinder body, a piston, and a displacement signal generator. The piston is movably disposed within the cylinder body and forms a hydraulic chamber with the cylinder body. The displacement signal generator is disposed on the piston and is located near the hydraulic chamber. The displacement signal generator moves with the piston and outputs displacement information of the piston.

[0008] According to some embodiments of this disclosure, at least a portion of the displacement signal generator is disposed in the hydraulic chamber.

[0009] According to some embodiments of this disclosure, the piston is formed with a mounting groove, and the displacement signal generator is disposed in the mounting groove that communicates between the piston and the hydraulic chamber.

[0010] According to some embodiments of this disclosure, the displacement signal generator is integrally installed within the mounting slot.

[0011] According to some embodiments of this disclosure, the mounting groove is interference-fitted with the displacement signal generator.

[0012] According to some embodiments of this disclosure, the mounting groove has an opening formed on the end face of the piston, and the cross-sectional area of ​​the opening is smaller than the cross-sectional area of ​​the displacement signal generator.

[0013] According to some embodiments of this disclosure, the mounting groove has an opening on the end face of the piston, the piston is provided with an oil hole, the oil hole communicates with the mounting groove and is located between the opening and the displacement signal generator.

[0014] According to some embodiments of this disclosure, the first end of the displacement signal generator is disposed in the mounting groove, and the second end of the displacement signal generator is located outside the mounting groove.

[0015] According to some embodiments of this disclosure, the bottom surface of the mounting groove is provided with a protruding structure, which divides the mounting groove into a mounting base and an elastic element positioning groove, and a portion of the displacement signal generator is located within the mounting base.

[0016] According to some embodiments of this disclosure, at least a portion of the displacement signal generator is integrated into the piston.

[0017] According to some embodiments of this disclosure, the central axis of the displacement signal generator is parallel to and spaced apart from the central axis of the piston; in the radial direction of the piston, the distance from the displacement signal generator to the central axis of the piston is greater than the distance from the displacement signal generator to the outer peripheral wall of the piston.

[0018] According to some embodiments of this disclosure, the central axis of the displacement signal generator coincides with the central axis of the piston.

[0019] According to some embodiments of this disclosure, the brake cylinder further includes an elastic element, and a limiting boss is provided at the end of the piston away from the displacement signal generator. The elastic element is sleeved on the piston and abuts against the limiting boss and the cylinder body to provide elastic force to the piston.

[0020] According to some embodiments of this disclosure, the displacement signal generator includes a bracket and a magnetic component, the bracket being disposed on the piston; the magnetic component being disposed on the bracket.

[0021] According to some embodiments of this disclosure, the piston is formed with a mounting groove, the bracket is mounted in the mounting groove, and is interference-fitted with the mounting groove.

[0022] According to some embodiments of this disclosure, the outer peripheral wall of the bracket is provided with a plurality of protrusions that are interference-fitted with the inner wall of the mounting groove. The plurality of protrusions extend along the axial direction of the bracket and are spaced apart along the circumferential direction of the bracket. An air groove is formed between two adjacent protrusions that extends along the axial direction of the bracket.

[0023] According to some embodiments of this disclosure, the piston is formed with a mounting groove, the bracket is mounted in the mounting groove, the inner peripheral wall of the mounting groove is formed with an anti-detachment groove, the bracket is provided with an anti-detachment structure, the anti-detachment structure cooperates with the anti-detachment groove to prevent the bracket from detaching from the mounting groove.

[0024] According to some embodiments of this disclosure, the anti-detachment structure includes a plurality of anti-detachment claws, which are spaced apart circumferentially along the bracket. A weakening groove is formed between two adjacent anti-detachment claws, and the distance between opposing anti-detachment claws in the radial direction of the bracket gradually increases in the direction away from the bottom of the mounting groove.

[0025] According to some embodiments of this disclosure, the bracket has a mounting cavity, and the magnetic element is disposed within the mounting cavity.

[0026] According to some embodiments of this disclosure, the displacement signal generator is an integral magnetic component.

[0027] According to some embodiments of this disclosure, the brake cylinder further includes a push rod that abuts against one side of the piston, and the push rod is isolated from the displacement signal generator through the piston.

[0028] According to some embodiments of this disclosure, the brake cylinder further includes: a displacement signal receiver, the displacement signal receiver being disposed in the cylinder body, the displacement signal receiver being used to receive displacement information of the piston output by the displacement signal generator.

[0029] According to some embodiments of this disclosure, the displacement signal receiver includes a receiving shell, a receiving chip, and a connecting line. One end of the receiving shell is disposed near the displacement signal generator, the receiving chip is disposed at the one end, the connecting line extends along the axial direction of the receiving shell, a first end of the connecting line is connected to the receiving chip, and a second end of the connecting line extends out of the receiving shell.

[0030] According to some embodiments of this disclosure, one end of the receiving shell is provided with an assembly groove, the receiving chip is disposed at the bottom of the assembly groove, and the thickness of the receiving chip does not exceed the depth of the assembly groove.

[0031] According to some embodiments of this disclosure, the receiving shell includes a first shell segment and a second shell segment, the first shell segment being connected to the second shell segment, the first shell segment being closer to the displacement signal generator than the second shell segment; the receiving chip is disposed within the first shell segment; and the connecting line extends within the second shell segment.

[0032] According to some embodiments of this disclosure, the receiving shell further includes: a third shell segment connected to the second shell segment, the connecting line extending out of the third shell segment, and the extending direction of the third shell segment or the connecting line being perpendicular to the axial direction of the piston or the direction of movement of the piston.

[0033] According to some embodiments of this disclosure, the receiving shell includes at least two snap-fit ​​sub-shells, each of the at least two sub-shells extending along the length of the receiving shell.

[0034] According to some embodiments of this disclosure, the displacement signal receiver is disposed on the outer peripheral wall or one axial end of the cylinder.

[0035] According to some embodiments of this disclosure, the cylinder body has a first groove communicating with the hydraulic chamber, a first end of the displacement signal generator is disposed on the piston, a second end of the displacement signal generator is slidably disposed on the first groove, and the displacement signal receiver is located outside the first groove.

[0036] According to some embodiments of this disclosure, a first groove communicating with the hydraulic chamber is formed at one end of the cylinder body, a displacement signal receiver is disposed at one end of the cylinder body, a second groove is formed in the displacement signal receiver, and a displacement signal generator is slidably disposed in the first groove and the second groove.

[0037] According to some embodiments of this disclosure, the brake cylinder further includes a first seal disposed between an end face of one end of the cylinder body and an end face of the displacement signal receiver.

[0038] According to some embodiments of this disclosure, the brake cylinder further includes a second seal disposed between the inner peripheral wall of the first slide groove and the outer peripheral wall of the displacement signal generator.

[0039] A braking system according to some embodiments of the present disclosure includes the brake cylinder described above.

[0040] Vehicles according to some embodiments of this disclosure include the braking system described above.

[0041] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0042] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0043] Figure 1 is a cross-sectional view of a brake cylinder according to some embodiments of the present disclosure;

[0044] Figure 2 is a cross-sectional view of a brake cylinder containing a displacement signal generator according to some embodiments of the present disclosure;

[0045] Figure 3 is a cross-sectional view of a brake cylinder containing an elastic element positioning groove according to some embodiments of the present disclosure;

[0046] Figure 4 is a structural diagram of a displacement signal generator according to some embodiments of the present disclosure;

[0047] Figure 5 is a structural diagram of a brake cylinder containing a hydraulic unit according to some embodiments of the present disclosure;

[0048] Figure 6 is a cross-sectional view along line AA in Figure 5;

[0049] Figure 7 is a cross-sectional view along line BB in Figure 5;

[0050] Figure 8 is a magnified view of the area circled C in Figure 7;

[0051] Figure 9 is a structural diagram showing the cooperation between the first limiting part and the second limiting part according to some embodiments of the present disclosure;

[0052] Figure 10 is a structural diagram of a limiting cover according to some embodiments of the present disclosure;

[0053] Figure 11 is a structural diagram of a limiting member according to some embodiments of the present disclosure;

[0054] Figure 12 is a structural diagram of a displacement signal receiver according to some embodiments of the present disclosure;

[0055] Figure 13 is a structural diagram of a first shell segment according to some embodiments of the present disclosure;

[0056] Figure 14 is a structural diagram of a hydraulic unit with a settling groove according to some embodiments of the present disclosure;

[0057] Figure 15 is a structural diagram of a brake cylinder according to some other embodiments of the present disclosure;

[0058] Figure 16 is a structural diagram of a brake cylinder according to some embodiments of the present disclosure;

[0059] Figure 17 is a structural diagram of a piston containing a displacement signal generator according to some embodiments of the present disclosure;

[0060] Figure 18 is a schematic diagram of a braking system according to some embodiments of the present disclosure;

[0061] Figure 19 is a structural diagram of a braking system containing a drive element according to some embodiments of the present disclosure;

[0062] Figure 20 is a structural diagram of a braking system containing a displacement signal receiver according to some embodiments of the present disclosure;

[0063] Figure 21 is a structural diagram of a third housing section of a displacement signal receiver according to some embodiments of the present disclosure, with a through hole.

[0064] Figure 22 is a cross-sectional view of another displacement signal receiver according to some embodiments of the present disclosure;

[0065] Figure 23 is a block diagram of a braking system according to some embodiments of the present disclosure;

[0066] Figure 24 is a block diagram of a vehicle according to some embodiments of the present disclosure.

[0067] Reference numerals: 100, brake cylinder; 10, piston; 11, mounting groove; 12, opening; 13, oil hole; 141, mounting base; 142, elastic element positioning groove; 143, protruding structure; 15, limiting boss; 20, displacement signal generator; 21, bracket; 211, air groove; 212, anti-detachment structure; 213, anti-detachment claw; 214, weakening groove; 215, mounting cavity; 216, external thread; 217, protrusion; 22, magnetic element; 30, cylinder body; 31, hydraulic chamber; 32, limiting cover; 321, first limiting part; 33, cylinder body; 331, control valve mounting hole; 332, countersunk groove; 34, through hole; 35, first sliding groove; 40, displacement signal receiver; 50, limiting element; 51, second limiting part; 52, push rod; 53, space; 60. Receiver housing; 61. Assembly slot; 62. First housing section; 63. Second housing section; 63. Fixing hole; 64. Third housing section; 70. Receiver chip; 80. Connecting wire; 90. Second slide groove; 91. First seal; 92. Second seal; 93. Elastic element; 94. Control unit; 95. Displacement sensor; 96. Drive element; 97. Electronic control device; 98. Positioning element; 99. Positioning hole; 1000. Braking system; 2000. Vehicle. Detailed Implementation

[0068] In related technologies, in order to obtain information about the brake pedal, a displacement sensor is generally installed at the brake cylinder. The displacement sensor includes a signal generator and a signal receiver. The signal generator is generally located outside the hydraulic chamber of the brake cylinder and is indirectly connected to the piston through a connector. The signal generator and the piston move synchronously through the connector. This not only increases the number of parts in the brake cylinder, but also increases the energy loss during piston movement, and occupies a lot of installation space, making the brake cylinder larger.

[0069] In addition, both the displacement signal generator and the displacement signal receiver are located in the cylinder body of the brake cylinder, resulting in poor component replaceability. When product testing reveals abnormalities, the cause of the problem is not easily detected, and the replacement cost is high.

[0070] To address the aforementioned technical problems, some embodiments of this disclosure provide a brake cylinder 100.

[0071] The embodiments of this disclosure are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary.

[0072] The brake cylinder 100 according to some embodiments of the present disclosure is described below with reference to the accompanying drawings.

[0073] As shown in Figures 1 and 2, a brake cylinder 100 according to some embodiments of the present disclosure includes a cylinder body 30, a piston 10, and a displacement signal generator 20. The piston 10 is movably disposed within the cylinder body 30, and the piston 10 and the cylinder body 30 form a hydraulic chamber 31. The displacement signal generator 20 is disposed on the piston 10, and the displacement signal generator 20 is located on the side closer to the hydraulic chamber 31. The displacement signal generator 20 moves with the piston 10 and outputs displacement information of the piston 10.

[0074] In related technologies, the piston and displacement signal generator in the brake cylinder are generally indirectly connected by a connecting member, which can be a connecting rod. The outer end of the piston is connected to a push rod, which is connected to the connecting rod, and the connecting rod is then connected to the displacement signal generator. This not only increases the number of parts in the brake cylinder, but also increases the energy loss during piston movement, and occupies a lot of installation space, making the overall size of the brake cylinder larger.

[0075] Therefore, according to some embodiments of the present disclosure, the displacement signal generator 20 in the brake cylinder 100 is disposed on the piston 10. The displacement signal generator 20 and the piston 10 are directly connected. The piston 10 can provide installation space for the displacement signal generator 20. By making reasonable use of space, the structure of the brake cylinder 100 can be made more compact, thereby avoiding the need to set up a separate mounting position for the displacement signal generator 20. It can also optimize the assembly space and the number of parts, reduce the holes of the displacement signal transmitter, connecting rod and displacement sensor in the hydraulic unit, and reduce the number of parts related to the displacement signal generator 20, thereby reducing costs.

[0076] In addition, the piston 10 and the displacement signal generator 20 are directly connected, which can avoid the loss of energy transfer between the piston 10 and the displacement signal generator 20, thereby improving the accuracy and reliability of the signal transmission of the displacement signal generator 20.

[0077] Furthermore, the displacement signal generator 20 is located on the side close to the hydraulic chamber 31, which reduces the distance between the displacement signal generator 20 and the displacement signal receiver 40, thereby improving the measurement accuracy of the displacement signal generator 20.

[0078] Furthermore, during braking, the axial movement of piston 10 can cause displacement signal generator 20 to move. Displacement signal generator 20 can then output information about the displacement of piston 10. By changing the displacement position between displacement signal generator 20 and displacement signal receiver 40, the change in the magnetic field sensed by displacement sensor 95 (as shown in Figure 18) can be altered, thereby changing the electrical signal output by displacement signal receiver 40. Thus, displacement sensor 95 can collect the driver's braking depth, and control unit 94 (as shown in Figure 18) can calculate and analyze this data to control the power assist pump to generate the required pressure, thereby meeting the driver's braking needs.

[0079] The explanations for each label in Figure 18 are shown in Table 1.

[0080] Table 1

[0081] Therefore, the piston 10 in the brake cylinder 100 can provide mounting space for the displacement signal generator 20. By making reasonable use of space, the structure of the brake cylinder 100 can be made more compact, thus avoiding the need for a separate mounting position for the displacement signal generator 20, optimizing the assembly space, and reducing the number of parts related to the displacement signal generator 20, thereby reducing costs. Moreover, the direct connection between the piston 10 and the displacement signal generator 20 avoids energy transfer losses between the piston 10 and the displacement signal generator 20, and reduces the distance between the displacement signal generator 20 and the displacement signal receiver 40, thereby improving the measurement accuracy of the displacement signal generator 20, as well as the accuracy and reliability of the signal transmission from the displacement signal generator 20.

[0082] According to some embodiments of this disclosure, as shown in Figures 1 and 2, at least a portion of the displacement signal generator 20 is disposed in the hydraulic chamber 31.

[0083] For example, a part of the displacement signal generator 20 is fixedly connected to the piston 10, and another part of the displacement signal generator 20 is located in the hydraulic chamber 31. In this way, not only can the displacement signal generator 20 and the displacement signal receiver 40 be within the measurement range, but the distance between the displacement signal generator 20 and the displacement signal receiver 40 can also be reduced, thereby improving the accuracy and reliability of the signal transmission of the displacement signal generator 20.

[0084] According to some embodiments of this disclosure, as shown in Figures 1 and 2, the piston 10 is formed with a mounting groove 11, and the displacement signal generator 20 is disposed in the mounting groove 11 that communicates between the piston 10 and the hydraulic chamber 31.

[0085] For example, the piston 10 has a mounting groove 11, which makes it easy to fix a part of the displacement signal generator 20 in the mounting groove 11. Moreover, the displacement signal generator 20 is set in the mounting groove 11 that connects the piston 10 and the hydraulic chamber 31. In this way, the impact on the signal transmission of the displacement signal generator 20 can be reduced, thereby ensuring the stability of the signal transmission of the displacement signal generator 20.

[0086] According to some embodiments of this disclosure, as shown in FIG1, at least a portion of the displacement signal generator 20 is built into the piston 10. For example, at least a portion of the displacement signal generator 20 is built into the piston 10, and at least a portion of the displacement signal generator 20 is directly connected to the piston 10. This not only makes the connection between the displacement signal generator 20 and the piston 10 more secure, but also enables the synchronous movement of the displacement signal generator 20 and the piston 10, thereby improving the accuracy of the displacement signal transmission of the displacement signal generator 20.

[0087] According to some embodiments of this disclosure, as shown in FIG1, the central axis of the displacement signal generator 20 is parallel to the central axis of the piston 10, and the central axis of the displacement signal generator 20 and the central axis of the piston 10 are spaced apart. In the radial direction of the piston 10, the distance from the displacement signal generator 20 to the central axis of the piston 10 is greater than the distance from the displacement signal generator 20 to the outer peripheral wall of the piston 10.

[0088] For example, when the central axis of the displacement signal generator 20 is kept parallel to the central axis of the piston 10, it can be ensured that the displacement signal generator 20 can accurately measure the displacement of the piston 10, and the measurement deviation caused by assembly error can be reduced, thereby improving the measurement accuracy of the displacement signal generator 20.

[0089] If the central axis of the displacement signal generator 20 is not parallel to the central axis of the piston 10, additional mechanical stress will be generated at the connection between the displacement signal generator 20 and the piston 10. This stress can cause wear or damage at the connection between the displacement signal generator 20 and the piston 10. Therefore, by setting the central axis of the displacement signal generator 20 parallel to the central axis of the piston 10, the generation of this unnecessary mechanical stress can be minimized.

[0090] Furthermore, the central axis of the displacement signal generator 20 is spaced apart from the central axis of the piston 10. When the displacement signal generator 20 is connected to the piston 10, this can prevent the components at the central axis of the displacement signal generator 20 from interfering with the piston 10.

[0091] Furthermore, the central axis of the displacement signal generator 20 is spaced apart from the central axis of the piston 10, allowing for further adjustments based on actual conditions. By controlling the distance between the central axis of the displacement signal generator 20 and the central axis of the piston 10, different application scenarios can be adapted. For example, increasing the distance between the central axis of the displacement signal generator 20 and the central axis of the piston 10 can shorten the distance between the displacement signal generator 20 and the displacement signal receiver 40, thereby expanding the measurement range of the displacement signal generator 20. Alternatively, decreasing the distance between the central axis of the displacement signal generator 20 and the central axis of the piston 10 can improve the measurement accuracy of the displacement signal generator 20.

[0092] In the radial direction of piston 10, the distance from displacement signal generator 20 to the central axis of piston 10 is greater than the distance from displacement signal generator 20 to the outer peripheral wall of piston 10. This can reduce the distance between displacement signal generator 20 and displacement signal receiver 40, thereby improving the stability of displacement signal transmission between displacement signal generator 20 and displacement signal receiver 40, and also improving the accuracy of measurement.

[0093] According to some other embodiments of this disclosure, as shown in FIG15, the central axis of the displacement signal generator 20 coincides with the central axis of the piston 10.

[0094] For example, when the central axis of the displacement signal generator 20 is set to coincide with the central axis of the piston 10, not only can the accuracy of the displacement signal generator 20 in measuring the displacement of the piston 10 be further improved, but the symmetry and dynamic balance of the entire brake cylinder 100 can also be further guaranteed. This can avoid uneven force on the brake cylinder 100 as a whole, and can also prevent vibration problems caused by the asymmetry of the brake cylinder 100, thereby affecting the measurement accuracy of the displacement signal generator 20.

[0095] According to some embodiments of this disclosure, as shown in FIG1, the piston 10 is formed with a mounting groove 11, and the displacement signal generator 20 is mounted in the mounting groove 11.

[0096] For example, since the displacement signal generator 20 is elongated and its cross-section can be circular, the piston 10 has an elongated mounting groove 11. Thus, the piston 10 and the displacement signal generator 20 are correspondingly set, which facilitates the connection and cooperation between the displacement signal generator 20 and the piston 10.

[0097] According to some embodiments of this disclosure, as shown in FIG2, the displacement signal generator 20 is integrally mounted within the mounting groove 11. Thus, the mounting groove 11 on the piston 10 not only facilitates the installation of the displacement signal generator 20 but also provides protection for it. Furthermore, the displacement signal generator 20 extending into the mounting groove 11 prevents interference between it and other components and allows for a more compact structure.

[0098] According to some embodiments of this disclosure, as shown in FIG2, the mounting groove 11 is interference-fitted with the displacement signal generator 20.

[0099] For example, during braking, the piston 10 drives the displacement signal generator 20 to move axially. The mounting groove 11 is interference-fitted with the displacement signal generator 20, and the connection between the displacement signal generator 20 and the mounting groove 11 is tighter. This can prevent the displacement signal generator 20 from shaking relative to the piston 10, thereby avoiding damage to the displacement signal generator 20 and extending its service life.

[0100] According to some embodiments of this disclosure, as shown in FIG2, the mounting groove 11 has an opening 12 formed on the end face of the piston 10, and the cross-sectional area of ​​the opening 12 is smaller than the cross-sectional area of ​​the displacement signal generator 20.

[0101] After the displacement signal generator 20 is installed in the mounting slot 11, the opening 12 can be narrowed by riveting so that the cross-sectional area of ​​the opening 12 is smaller than the cross-sectional area of ​​the displacement signal generator 20, thereby fixing the displacement signal generator 20.

[0102] According to some embodiments of this disclosure, as shown in Figures 1 and 17, the mounting groove 11 forms an opening 12 on the end face of the piston 10, the piston 10 is provided with an oil hole 13, the oil hole 13 communicates with the mounting groove 11, and the oil hole 13 is located between the opening 12 and the displacement signal generator 20.

[0103] Since the piston 10 performs axial reciprocating motion, sliding friction occurs during the movement, which makes the piston 10 prone to wear. The oil hole 13 can provide lubrication for the piston 10 during the movement, which can reduce the friction generated by the piston 10 during the movement and thus reduce the energy loss of the piston 10 during the movement.

[0104] According to some embodiments of this disclosure, as shown in Figures 15 and 16, the first end of the displacement signal generator 20 is disposed in the mounting groove 11, and the second end of the displacement signal generator 20 is located outside the mounting groove 11.

[0105] For example, the first end of the displacement signal generator 20 is located inside the mounting groove 11, which facilitates the connection and fixation of the displacement signal generator 20 and the piston 10. Moreover, the second end of the displacement signal generator 20 is located outside the mounting groove 11, which facilitates the output of the displacement signal and reduces interference to the displacement signal output of the displacement signal generator 20, thereby ensuring the stability of the displacement signal output by the displacement signal generator 20.

[0106] According to some embodiments of this disclosure, as shown in Figures 2 and 15, a protruding structure 143 is provided on the bottom surface of the mounting groove 11. The protruding structure 143 divides the mounting groove 11 into a mounting base 141 and an elastic element positioning groove 142. A portion of the displacement signal generator 20 is located inside the mounting base 141.

[0107] Mounting base 141 is used to mount displacement signal generator 20, and elastic element positioning groove 142 is used to position and mount elastic element 93 (as shown in Figures 1, 3, and 16). The protruding structure 143 can prevent interference between displacement signal generator 20 and elastic element 93. A part of displacement signal generator 20 is located inside mounting base 141, which facilitates the installation of displacement signal generator 20. Elastic element positioning groove 142 can provide an accurate installation position for elastic element 93. Elastic element 93 is located inside elastic element positioning groove 142. Elastic element 93 can be a spring, which can provide automatic return power for piston 10. During braking, piston 10 compresses elastic element 93 under the action of external force. At this time, elastic element 93 is in a compressed state. After braking is completed, the external force is removed, and elastic element 93 returns to its original state. Thus, piston 10 gradually returns to its original initial position under the reaction force, which facilitates piston 10 to brake again.

[0108] Furthermore, the setting of the elastic element positioning groove 142 can realize the quick positioning and installation of the elastic element 93, and can also prevent the installation position of the elastic element 93 from being misaligned.

[0109] According to some embodiments of this disclosure, as shown in FIG4, the displacement signal generator 20 includes: a bracket 21 and at least one magnetic element 22, the bracket 21 being disposed on the piston 10, and the at least one magnetic element 22 being disposed on the bracket 21.

[0110] The displacement signal generator 20 includes a bracket 21 and a magnetic component 22. Since the displacement signal generator 20 needs to be fixedly connected to the piston 10, the bracket 21 not only facilitates the connection of the magnetic component 22 to the piston 10, but also provides installation space for the magnetic component 22 and protects the magnetic component 22, thereby improving the service life of the displacement signal generator 20.

[0111] Magnetic component 22 is a signal magnet, located coaxially inside the support 21. The signal magnet can be one or more segments, and is magnetized axially, with one end designated as the N pole and the other as the S pole. Here, the signal magnet can refer to a magnet used for signal detection or signal generation. The signal magnet can move with the piston, causing a change in the magnetic signal, which is then received and detected by the displacement signal receiver 40.

[0112] According to some embodiments of this disclosure, as shown in Figures 2 and 4, the piston 10 has a mounting groove 11, and the bracket 21 is mounted in the mounting groove 11 with an interference fit. For example, the bracket 21 may contain a magnetic element 22, which can be a magnet. The piston 10 is made of metal, and the bracket 21 is interference-fitted with the mounting groove 11 of the piston 10. This allows for the engagement between the magnetic element 22 and the piston 10, and also facilitates the fixation of the magnetic element 22.

[0113] According to some embodiments of this disclosure, as shown in FIG4, the outer peripheral wall of the bracket 21 is provided with a plurality of protrusions 217 that are interference-fitted with the inner wall of the mounting groove 11. The plurality of protrusions 217 extend along the axial direction of the bracket 21 and are spaced apart along the circumferential direction of the bracket 21. An air groove 211 is formed between two adjacent protrusions 217 that extends along the axial direction of the bracket 21.

[0114] For example, the mounting groove 11 allows the bracket 21 to extend into the mounting groove 11 of the piston 10, thereby facilitating the connection and fixation between the piston 10 and the bracket 21.

[0115] Furthermore, the outer peripheral wall of the bracket 21 is provided with multiple protrusions 217, and an air groove 211 is formed between two adjacent protrusions 217. The air groove 211 is a through groove, which can play the role of exhausting air. Moreover, the air groove 211 extends to both ends of the bracket 21, so as to play the role of fully exhausting air, thereby improving the exhaust efficiency of the displacement signal generator 20.

[0116] According to some embodiments of the present disclosure, as shown in FIG4, the shift signal generator 20 includes a plurality of air slots 211, each air slot 211 extending along the axial direction of the support 21, and the plurality of air slots 211 being spaced apart circumferentially along the support 21.

[0117] For example, each air groove 211 extends along the axial direction of the support 21, thus allowing for sufficient exhaust along the axial direction of the support 21. Multiple air grooves 211 are evenly spaced along the circumference of the support 21, which further improves exhaust efficiency and also enhances the balance and stability of the support 21.

[0118] According to some embodiments of this disclosure, as shown in Figures 2 and 4, the piston 10 is formed with a mounting groove 11, the bracket 21 is mounted in the mounting groove 11, the inner peripheral wall of the mounting groove 11 is formed with an anti-detachment groove, and the bracket 21 is provided with an anti-detachment structure 212, which cooperates with the anti-detachment groove to prevent the bracket 21 from detaching from the mounting groove 11.

[0119] For example, the end of the bracket 21 facing the mounting groove 11 is provided with a protruding anti-detachment structure 212. The anti-detachment structure 212 is generally conical, so the cross-section of the anti-detachment structure 212 is larger than the cross-section of the main body of the bracket 21, thereby increasing the connection strength at the connection between the bracket 21 and the piston 10. Correspondingly, the inner peripheral wall of the mounting groove 11 is provided with an anti-detachment groove, and the anti-detachment structure 212 extends into the anti-detachment groove for connection and cooperation, thereby making the connection and cooperation between the bracket 21 and the piston 10 more stable and firm.

[0120] According to some embodiments of this disclosure, as shown in FIG4, the anti-detachment structure 212 includes a plurality of anti-detachment claws 213, which are spaced apart along the circumference of the bracket 21. A weakening groove 214 is formed between two adjacent anti-detachment claws 213. In the radial direction of the bracket 21, the distance between the relative anti-detachment claws 213 gradually increases in the direction away from the bottom of the hole in the mounting groove 11.

[0121] For example, the anti-detachment claw 213 is an arc claw, and multiple anti-detachment claws 213 are evenly spaced along the circumference of the bracket 21, which can make the force at the connection between the anti-detachment claw 213 and the anti-detachment groove more uniform, and can further make the connection between the anti-detachment claw 213 and the anti-detachment groove more secure.

[0122] Furthermore, in the radial direction of the bracket 21, the distance between the relative anti-detachment claws 213 gradually increases in a conical shape along the direction away from the bottom of the hole in the mounting groove 11. This can increase the strength of the anti-detachment claws 213 and facilitate the assembly of the anti-detachment claws 213 with the anti-detachment groove. During the assembly process, the anti-detachment claws 213 can gradually and tightly cooperate with the anti-detachment groove.

[0123] According to some embodiments of this disclosure, as shown in FIG4, the bracket 21 has a mounting cavity 215, and the magnetic element 22 is disposed in the mounting cavity 215.

[0124] For example, the bracket 21 has an installation cavity 215 inside, which can provide installation space for the magnetic component 22, thereby facilitating the fixed installation of the magnetic component 22.

[0125] According to some embodiments of this disclosure, as shown in Figures 4, 15 and 16, the piston 10 is formed with a mounting groove 11, one end of the bracket 21 is disposed in the mounting groove 11, and the magnetic element 22 is disposed on the outer peripheral wall of the other end of the bracket 21.

[0126] The bracket 21, designed in this way, solves the installation problem of the displacement signal generator 20 and allows the magnetic component 22 to be further away from the piston 10, and to be closer to the displacement signal receiver 40, which is beneficial for subsequent displacement detection. At least one magnetic component 22 includes one or more magnetic components 22.

[0127] According to other embodiments of this disclosure, as shown in Figures 15 and 16, the piston 10 has a mounting groove 11, and one end of the bracket 21 is provided with an external thread 216. The mounting groove 11 is a threaded hole, and the external thread 216 mates with the threaded hole. Alternatively, one end of the bracket 21 is bonded to the mounting groove 11.

[0128] For example, the piston 10 has a mounting groove 11, and the external thread 216 at one end of the bracket 21 is threaded into the threaded hole, which has a self-locking function, thereby preventing the piston 10 and the bracket 21 from moving relative to each other, and also facilitating the installation and disassembly of the piston 10 and the bracket 21.

[0129] One end of the bracket 21 is bonded to the mounting groove 11, which makes the bonding between the one end of the bracket 21 and the mounting groove 11 more secure.

[0130] According to some embodiments of this disclosure, the displacement signal generator 20 is an integral magnetic component.

[0131] For example, the displacement signal generator 20 can be a permanent magnet. Permanent magnets have high magnetic properties and stability and will not lose their magnetic properties due to external interference or temperature changes. This allows the permanent magnet to provide a more stable and reliable magnetic field when used as the displacement signal generator 20, thereby improving measurement accuracy and stability.

[0132] Moreover, permanent magnets are relatively small in size and can provide a strong magnetic field in a limited space. This allows permanent magnets to occupy less space when used as displacement signal generators 20, making them more compact and easier to install.

[0133] According to some embodiments of this disclosure, as shown in FIG1, the cylinder body 30 further includes a push rod 52, which abuts against one side of the piston 10, and the push rod 52 is isolated from the displacement signal generator 20 through the piston 10.

[0134] For example, the cylinder body 30 mainly includes a limiting cover 32 and a cylinder body 33. The limiting cover 32 covers the opening 12 to seal the hydraulic chamber 31, thereby ensuring the sealing of the hydraulic chamber 31.

[0135] The limiting cover 32 and the cylinder body 33 together form a space 53, which allows a part of the piston 10 to move axially within the space 53. The push rod 52 abuts against one side of the piston 10, which facilitates pushing the piston 10 to move axially. The push rod 52 is isolated from the displacement signal generator 20 through the piston 10, thereby preventing the push rod 52 from interfering with or damaging the displacement signal generator 20.

[0136] Furthermore, the displacement signal receiver 40 is connected above the cylinder body 30 and is positioned close to the displacement signal generator 20, thereby ensuring the stability of the displacement signal transmission. In addition, the limit cover 32 is connected to the cylinder body 33 to determine the starting position of the piston 10, thereby limiting the position of the piston 10.

[0137] According to some embodiments of this disclosure, a displacement signal receiver 40 is disposed on the cylinder 30, and the axial direction of the displacement signal receiver 40 is perpendicular to the movement direction of the piston 10 or the axial direction of the cylinder 30.

[0138] In this way, by vertically installing the displacement signal receiver 40, the motion state of the displacement signal generator 20 on the piston 10 can be detected more accurately, and the influence of external interference on the signal can be reduced, thereby improving the accuracy and stability of the signal.

[0139] According to some embodiments of this disclosure, as shown in Figures 1 and 5, the outer peripheral wall of the cylinder body 30 is provided with at least one control valve mounting hole 331. The at least one control valve mounting hole 331 and the displacement signal receiver 40 are located on the same side of the cylinder body 30, and the at least one control valve mounting hole 331 and the displacement signal receiver 40 are spaced apart.

[0140] In some embodiments, at least one mounting hole 331 includes a plurality of control valve mounting holes 331, which can be mounting grooves 11 for solenoid valves. The control valve mounting holes 331 and the displacement signal receiver 40 are located on the same side of the cylinder body 30, thereby ensuring that the displacement signal receiver 40 is arranged within the effective signal range of the displacement signal generator 20. Furthermore, the control valve mounting holes 331 and the displacement signal receiver 40 are spaced apart, thereby preventing interference between the control valve and the displacement signal receiver 40, and also preventing mutual influence between the control valve and the displacement signal receiver 40.

[0141] According to some embodiments of this disclosure, as shown in FIG14, a groove 332 is provided on the outer peripheral wall of the cylinder 30, and one end of the displacement signal receiver 40 is installed in the groove 332. The groove 332 provides installation space for the displacement signal receiver 40, thereby facilitating the fixed installation of the displacement signal receiver 40. In addition, the groove 332 can also effectively reduce the volume occupied by one end of the displacement signal receiver 40.

[0142] If the radial distance between the displacement signal generator 20 and the displacement signal receiver 40 exceeds the effective range of signal transmission, the radial distance between the displacement signal generator 20 and the displacement signal receiver 40 can be adjusted by the sink 332, which has good adaptability.

[0143] According to some embodiments of this disclosure, as shown in Figures 6-9, the brake cylinder 100 further includes a limiting member 50, which is disposed on the piston 10. As shown in Figure 10, the limiting cover 32 is provided with a first limiting portion 321, and as shown in Figure 11, the limiting member 50 is provided with a second limiting portion 51. The first limiting portion 321 and the second limiting portion 51 are in a limiting engagement in the circumferential direction of the piston 10.

[0144] For example, the limiting member 50 is located between the limiting cover 32 and the piston 10. The limiting member 50 and the piston 10 are connected and fitted together to form a whole. The limiting cover 32 is fixedly connected to the cylinder body 33. The limiting member 50 is provided with a second limiting part 51. Correspondingly, the limiting cover 32 is provided with a first limiting part 321. The first limiting part 321 and the second limiting part 51 are fitted together to limit the piston 10, thereby preventing circumferential rotation. The first limiting part 321 and the second limiting part 51 are in clearance fit. When the piston 10 reciprocates, it can effectively limit the rotational movement of the piston 10, and also prevent the displacement signal receiver 40 from being outside the effective signal range of the displacement signal generator 20, thereby ensuring the radial relative position of the displacement signal receiver 40 and the displacement signal generator 20.

[0145] According to some embodiments of this disclosure, as shown in Figures 7-9, the first limiting portion 321 is configured as one of a limiting protrusion and a limiting groove, and the second limiting portion 51 is configured as the other of a limiting protrusion and a limiting groove.

[0146] For example, when the outer periphery of the second limiting part 51 is set as a limiting protrusion, the first limiting part 321 is correspondingly set as a limiting groove, which can be a semi-circular arc-shaped groove. When the outer periphery of the second limiting part 51 is set as a limiting groove, the first limiting part 321 is correspondingly set as a limiting protrusion. The limiting protrusion and the limiting groove cooperate to limit the movement of the piston 10, thereby preventing circumferential rotation and avoiding displacement signal distortion that could lead to braking system failure.

[0147] According to some embodiments of this disclosure, as shown in FIG6, the limiting member 50 is sleeved on one end of the piston 10 adjacent to the limiting cover 32. In this way, the limiting cover 32 can provide installation space for the limiting member 50, and the limiting member 50 and the limiting cover 32 cooperate to limit each other as a whole, which can prevent relative movement between the limiting member 50 and the limiting cover 32, thereby further ensuring that the circumferential position of the piston 10 does not rotate.

[0148] According to some embodiments of this disclosure, as shown in Figures 1, 6, 12, and 13, the displacement signal receiver 40 includes a receiver housing 60, a receiver chip 70, and a connecting line 80. One end of the receiver housing 60 is disposed near the displacement signal generator 20, the receiver chip 70 is disposed at one end of the receiver housing 60, and the connecting line 80 extends axially along the receiver housing 60. The first end of the connecting line 80 is connected to the receiver chip 70, and the second end of the connecting line 80 extends out of the other end of the receiver housing 60.

[0149] For example, the displacement signal receiver 40 mainly includes a receiver housing 60, a receiver chip 70, and a connecting line 80. The first end of the connecting line 80 is connected to the receiver chip 70, and the second end of the connecting line 80 extends out of the second end of the receiver housing 60. Furthermore, the connecting line 80 can be connected to the control unit 94, so that the electrical signal of displacement can be transmitted to the control unit 94. The control unit 94 calculates and analyzes to control the power assist pump to generate the required pressure, thereby meeting the driver's braking needs.

[0150] According to some embodiments of this disclosure, as shown in Figures 6, 12 and 13, a first end of the receiving shell 60 is provided with an assembly groove 61, and a receiving chip 70 is disposed at the bottom of the assembly groove 61. The thickness of the receiving chip 70 does not exceed (e.g., is less than or equal to) the depth of the assembly groove 61.

[0151] For example, the arrangement of the assembly slot 61 can make reasonable use of the space of the assembly slot 61. Similarly, there is no need to process a corresponding avoidance structure on the outer peripheral wall of the cylinder 30 to avoid the protrusion of the receiving chip 70. For example, the avoidance structure is a groove, which can reduce the processing procedures and costs.

[0152] The thickness of the receiving chip 70 does not exceed the depth of the mounting groove 61, which can protect the receiving chip 70 and prevent it from being bumped or damaged.

[0153] According to some embodiments of this disclosure, as shown in FIG12, the displacement signal receiver 40 includes a receiver housing 60, a receiver chip 70, and a connecting line 80. The receiver housing 60 includes a first housing segment 62 and a second housing segment 63. The second housing segment 63 is connected to the first housing segment 62, so that the first housing segment 62 is closer to the displacement signal generator 20 than the second housing segment 63. The receiver chip 70 is disposed in the first housing segment 62. The first end of the connecting line 80 is connected to the receiver chip 70, and the connecting line 80 extends in the second housing segment 63.

[0154] For example, the receiving chip 70 is disposed within the first housing segment 62, which ensures the relative position of the receiving chip 70 and the displacement signal generator 20, thereby ensuring that the displacement signal receiver 40 is within the effective signal range of the displacement signal generator 20. The connecting line 80 extends within the second housing segment 63, which serves to fix the connecting line 80, protect the connecting line 80, and guide the line.

[0155] In some embodiments, as shown in FIG14, the cylinder body 30 has at least one positioning hole 99. The first shell section 62 is provided with at least one positioning member 98, and the at least one positioning member 98 passes through at least one positioning hole 99.

[0156] In some embodiments, at least one positioning hole 99 includes multiple positioning holes 99. The positioning element 98 can be a positioning pin, and at least one positioning element 98 includes multiple positioning elements 98. The multiple positioning elements 98 are respectively provided with multiple positioning holes 99, so that the position of the displacement signal receiver 40 connected to the cylinder body 30 can be more accurate, and the installation of the displacement signal receiver 40 can be facilitated.

[0157] According to some embodiments of this disclosure, as shown in FIG12, the receiving shell 60 further includes a third shell segment 64, which is connected to the second shell segment 63. A connecting line 80 extends out of the third shell segment 64, and the extension direction of the third shell segment 64 or the connecting line 80 is perpendicular to the axial direction of the piston 10 or the movement direction of the piston 10.

[0158] It should be noted that the extension direction of the third shell section 64 is consistent with the extension direction of the connecting line 80, and the axial direction of the piston 10 is consistent with the movement direction of the piston 10.

[0159] For example, the second end of the connecting wire 80 extends out of the third housing section 64, thereby facilitating the electrical connection between the connecting wire 80 and the control unit 94.

[0160] In addition, the direction in which the third shell section 64 or the connecting line 80 extends is perpendicular to the axis of the cylinder 30 or the direction of movement of the piston 10, thereby avoiding interference of the connecting line 80 with the movement of the piston 10.

[0161] According to some other embodiments of this disclosure, as shown in FIG21, the cylinder body 30 is formed with a through hole 34, and the third shell section 64 passes through the through hole 34.

[0162] For example, the cylinder body 30 has a through hole 34 inside, which facilitates the insertion of the third housing section 64. The third housing section 64 is provided with a connecting line 80, which extends along the axial direction of the third housing section 64, which facilitates electrical connection with the control unit 94, thereby facilitating the transmission of displacement signals.

[0163] According to some embodiments of the present disclosure, as shown in Figures 21 and 22, the second shell section 63 is formed with a fixing hole 631, and the second shell section 63 is adapted to be installed on the cylinder body 30 by fasteners passing through the fixing hole 631.

[0164] The second shell section 63 may have a fixing hole 631, and the fastener is a screw. The fastener passes through the fixing hole 631, which can further make the connection between the displacement signal receiver 40 and the cylinder 30 more stable and firm.

[0165] According to some embodiments of this disclosure, the receiving housing 60 is formed by the snap-fitting of at least two sub-housings, each of the at least two sub-housings extending along the entire length of the receiving housing 60. This facilitates the installation and removal of the receiving housing 60, and also facilitates the maintenance of the internal circuitry of the receiving housing 60.

[0166] For example, each of at least two subshells extends along the length of the receiving shell 60.

[0167] According to some embodiments of this disclosure, as shown in Figures 1, 14 and 15, the displacement signal receiver 40 is disposed on the outer peripheral wall or one axial end of the cylinder body 30.

[0168] As shown in Figure 14, the displacement signal receiver 40 is sleeved on the outer peripheral wall of the cylinder 30. The housing of the displacement signal generator 20 is an integral structure with the housing of the cylinder 30. The piston 10 is installed inside the cylinder 30. A piston hole is opened inside the cylinder 30. The piston 10 passes through the piston hole. The displacement signal generator hole is located on the opposite side of the piston 10 hole. The displacement signal generator 20 is located inside the displacement signal generator hole.

[0169] Furthermore, the displacement signal generator 20 is threaded or glued to the piston 10, and the displacement signal receiver 40 is fixed to the outer peripheral wall of the cylinder 30 by screws or glue, so that the displacement signal receiver chip 70 and the circuit part are close to the side of the housing of the displacement signal generator 20, so that the displacement signal receiver chip 70 can receive the signal generated by the movement of the displacement signal generator 20.

[0170] As shown in Figure 15, the housing of the displacement signal generator 20 and the housing of the displacement signal receiver 40 are integrally formed. The piston 10 is installed inside the cylinder 30. A second displacement hole is located opposite the first hole. The displacement signal generator 20 is connected to the piston 10 by threads or adhesive. The displacement signal receiver 40 has a hole in the middle to accommodate the opening 12. The axis of this hole is parallel to the central axis of the piston 10. The hole can be a regular shape, such as a circular hole, or an irregular shape. The end face of the opening 12 of the housing of the displacement signal receiver 40, through an O-ring or gasket, mates with the hole face of the cylinder 30 to form a sealed cavity, and is fixed to the housing of the cylinder 30 without relative movement (e.g., relatively stationary). The signal transmission port of the housing of the displacement signal receiver 40 can face any direction. The chip and circuit structure of the displacement signal receiver 40 are enclosed within the housing of the displacement signal receiver 40. The displacement signal receiver 40 does not surround or enclose the hole of the displacement signal generator 20. The uncovered area can be made semi-transparent for easy observation of the internal situation, or it can be completely enclosed without a viewing window.

[0171] When the piston 10 moves, it drives the displacement signal generator 20 connected to the piston 10. The displacement signal generator 20 outputs a displacement signal by moving the permanent magnet on the displacement signal generator 20. The displacement signal receiver 40 transmits the displacement signal back to the circuit board.

[0172] According to some embodiments of this disclosure, as shown in FIG15, the cylinder body 30 is formed with a first groove 35 communicating with the hydraulic chamber 31, the first end of the displacement signal generator 20 is disposed on the piston 10, the second end of the displacement signal generator 20 is slidably disposed on the first groove 35, and the displacement signal receiver 40 is located outside the first groove 35.

[0173] For example, during braking, the second end of the piston 10 slides in the first groove 35, which allows the displacement signal generator 20 to measure the displacement of the piston 10. The displacement signal generator 20 transmits the displacement signal to the displacement signal receiver 40 outside the first groove 35, which makes it easier for the control unit 94 to control the power assist pump to generate the required pressure, thereby meeting the driver's braking needs.

[0174] According to some embodiments of this disclosure, as shown in FIG16, a first groove 35 communicating with a hydraulic chamber 31 is formed at one end of the cylinder body 30, a displacement signal receiver 40 is disposed at one end of the cylinder body 30, the displacement signal receiver 40 is formed with a second groove 90, and the displacement signal generator 20 is slidably disposed in the first groove 35 and the second groove 90.

[0175] For example, during braking, the second end of piston 10 slides in the first groove 35 and the second groove 90, so that displacement signal generator 20 can measure the displacement of piston 10. Displacement signal generator 20 transmits displacement signal to displacement signal receiver 40 outside the first groove 35, so that control unit 94 can control power pump to generate the required pressure, thereby meeting the driver's braking needs.

[0176] According to some embodiments of this disclosure, as shown in FIG16, the brake cylinder 100 further includes a first seal 91, which is disposed between the end face of one end of the cylinder body 30 and the end face of the displacement signal receiver 40. The first seal 91 can be configured as an O-ring or a gasket, thereby improving the sealing between the cylinder body 30 and the displacement signal receiver 40.

[0177] According to some embodiments of this disclosure, as shown in FIG16, the brake cylinder 100 further includes a second seal 92, which is disposed between the inner peripheral wall of the first slide groove 35 and the outer peripheral wall of the displacement signal generator 20.

[0178] For example, the second seal 92 can be configured as a cup-type seal ring, thereby improving the sealing between the inner peripheral wall of the first groove 35 and the outer peripheral wall of the displacement signal generator 20.

[0179] According to some embodiments of this disclosure, as shown in FIG20, the brake cylinder 100 further includes an elastic element 93. A limiting boss 15 is provided at one end of the piston 10 away from the displacement signal generator 20. The elastic element 93 is sleeved on the piston 10 and abuts against the limiting boss 15 and the cylinder body 30, thereby providing elastic force to the piston 10.

[0180] For example, the elastic element 93 can be set as a spring. The setting of the limiting boss 15 can increase the contact area with the elastic element 93, thereby making the elastic element 93 and the piston 10 cooperate more stably. The elastic element 93 is sleeved on the piston 10, which can provide the piston 10 with the power to automatically return to the initial position.

[0181] As shown in FIG23, the braking system 1000 according to some embodiments of the present disclosure includes the brake cylinder 100 of the above embodiments.

[0182] For example, as shown in Figures 19 and 20, the braking system 1000 includes a drive element 96, which is fixed to the cylinder body 30. The drive element 96 includes a motor and a rotary translation mechanism. The rotating component on the rotary translation mechanism is connected to the motor rotor and rotates with the rotor. The translation component on the rotary translation mechanism is used to convert the rotational motion of the rotating component into linear motion. One end of the translation component is connected to a piston 10, which is inserted into the sealing groove of the cylinder body 30. The piston 10 moves up and down to achieve the purpose of pressurization. Through the oil circuit adjustment system of the cylinder body 30, the high hydraulic medium is transmitted to the brake wheel end of the vehicle, which can achieve the effect of vehicle deceleration. The cylinder body 30 has an oil outlet, which is connected to the brake wheel end of the vehicle through a pipeline.

[0183] The braking system 1000 also includes an electronic control unit 97. The drive signal for the motor comes from the electronic control unit 97. The electronic control unit 97 receives the signal from the displacement sensor 95 and determines the driver's braking intention by analyzing the digital or analog signal. This allows it to quickly control the motor to achieve the desired braking effect.

[0184] As shown in FIG24, a vehicle 2000 according to some embodiments of the present disclosure includes the braking system 1000 of the above embodiments.

[0185] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0186] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0187] Although embodiments of this disclosure have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A brake cylinder (100), comprising: Cylinder block (30); A piston (10), said piston (10) being movably disposed within the cylinder (30) and forming a hydraulic chamber (31) with the cylinder (30); and A displacement signal generator (20) is disposed on the piston (10) and close to the side of the hydraulic chamber (31). The displacement signal generator (20) moves with the piston (10) and outputs the displacement information of the piston (10).

2. The brake cylinder (100) according to claim 1, wherein, At least a portion of the displacement signal generator (20) is disposed in the hydraulic chamber (31).

3. The brake cylinder (100) according to claim 1 or 2, wherein, The piston (10) has a mounting groove (11), and the displacement signal generator (20) is disposed in the mounting groove (11) that communicates between the piston (10) and the hydraulic chamber (31).

4. The brake cylinder (100) according to claim 3, wherein, The displacement signal generator (20) is installed entirely in the mounting slot (11).

5. The brake cylinder (100) according to claim 4, wherein, The mounting groove (11) is interference-fitted with the displacement signal generator (20).

6. The brake cylinder (100) according to claim 4 or 5, wherein, The mounting groove (11) has an opening (12) formed on the end face of the piston (10), and the cross-sectional area of ​​the opening (12) is smaller than the cross-sectional area of ​​the displacement signal generator (20).

7. The brake cylinder (100) according to any one of claims 4 to 6, wherein, The mounting groove (11) has an opening (12) on the end face of the piston (10). The piston (10) is provided with an oil hole (13), which communicates with the mounting groove (11) and is located between the opening (12) and the displacement signal generator (20).

8. The brake cylinder (100) according to claim 3, wherein, The first end of the displacement signal generator (20) is disposed in the mounting groove (11), and the second end of the displacement signal generator (20) is located outside the mounting groove (11).

9. The brake cylinder (100) according to claim 8, wherein, The bottom surface of the mounting groove (11) is provided with a protruding structure (143), which divides the mounting groove (11) into a mounting base and an elastic element positioning groove. A part of the displacement signal generator (20) is located in the mounting base.

10. The brake cylinder (100) according to any one of claims 1-9, wherein, At least a portion of the displacement signal generator (20) is integrated into the piston (10).

11. The brake cylinder (100) according to any one of claims 1-10, wherein, The central axis of the displacement signal generator (20) is parallel to and spaced apart from the central axis of the piston (10); In the radial direction of the piston (10), the distance from the displacement signal generator (20) to the central axis of the piston (10) is greater than the distance from the displacement signal generator (20) to the outer peripheral wall of the piston (10).

12. The brake cylinder (100) according to any one of claims 1-11, wherein, The central axis of the displacement signal generator (20) coincides with the central axis of the piston (10).

13. The brake cylinder (100) according to any one of claims 1-12, further comprising: An elastic element (93) is provided at one end of the piston (10) away from the displacement signal generator (20), with a limiting boss (15). The elastic element (93) is sleeved on the piston (10) and abuts against the limiting boss (15) and the cylinder (30) to provide elastic force to the piston (10).

14. The brake cylinder (100) according to any one of claims 1-13, wherein, The displacement signal generator (20) includes: A bracket (21) is disposed on the piston (10); and A magnetic component (22) is disposed on the bracket (21).

15. The brake cylinder (100) according to claim 14, wherein, The piston (10) has a mounting groove (11), and the bracket (21) is mounted in the mounting groove (11) and is interference-fitted with the mounting groove (11).

16. The brake cylinder (100) according to claim 15, wherein, The outer peripheral wall of the bracket (21) is provided with a plurality of protrusions (217) that are interference fit with the inner wall of the mounting groove (11). The plurality of protrusions (217) extend along the axial direction of the bracket (21) and are spaced apart along the circumferential direction of the bracket (21). Between two adjacent protrusions (217), an air groove is formed that runs through the axial direction of the bracket (21).

17. The brake cylinder (100) according to any one of claims 14 to 16, wherein, The piston (10) has a mounting groove (11), the bracket (21) is mounted in the mounting groove (11), the inner peripheral wall of the mounting groove (11) has an anti-detachment groove, the bracket (21) is provided with an anti-detachment structure (212), the anti-detachment structure (212) cooperates with the anti-detachment groove to prevent the bracket (21) from detaching from the mounting groove (11).

18. The brake cylinder (100) according to claim 17, wherein, The anti-detachment structure (212) includes: Multiple anti-detachment claws (213) are arranged at intervals along the circumference of the bracket (21). A weakening groove is formed between two adjacent anti-detachment claws (213). In the radial direction of the bracket (21), the distance between opposite anti-detachment claws (213) gradually increases in the direction away from the bottom of the mounting groove (11).

19. The brake cylinder (100) according to claim 15 or 16, wherein, The bracket (21) has a mounting cavity (215), and the magnetic element (22) is disposed in the mounting cavity (215).

20. The brake cylinder (100) according to any one of claims 1-19, wherein, The displacement signal generator (20) is an integral magnetic component.

21. The brake cylinder (100) according to any one of claims 1-20, further comprising: Push rod (52) abuts against one side of piston (10), and push rod (52) is isolated from displacement signal generator (20) through piston (10).

22. The brake cylinder (100) according to any one of claims 1-21, further comprising: A displacement signal receiver (40) is disposed on the cylinder (30) and configured to receive displacement information of the piston (10) output by the displacement signal generator (20).

23. The brake cylinder (100) according to claim 22, wherein, The displacement signal receiver (40) includes: A receiving shell (60) is provided, with one end of the receiving shell (60) positioned close to the displacement signal generator (20); A receiving chip (70), the receiving chip (70) being disposed at one end; and A connecting line (80) extends along the axial direction of the receiving housing (60), with a first end connected to the receiving chip (70) and a second end extending out of the receiving housing (60).

24. The brake cylinder (100) according to claim 23, wherein, One end of the receiving shell (60) is provided with an assembly groove (61), and the receiving chip (70) is disposed at the bottom of the assembly groove (61). The thickness of the receiving chip (70) does not exceed the depth of the assembly groove (61).

25. The brake cylinder (100) according to claim 23 or 24, wherein, The receiving shell (60) includes a first shell segment (62) and a second shell segment (63), the first shell segment (62) being connected to the second shell segment (63), and the first shell segment (62) being closer to the displacement signal generator (20) than the second shell segment (63); The receiving chip (70) is disposed within the first housing segment (62); The connecting line (80) extends within the second shell section (63).

26. The brake cylinder (100) according to claim 25, wherein, The receiving shell (60) further includes: a third shell section (64), which is connected to the second shell section (63), and a connecting line (80) extends out of the third shell section (64). The direction of extension of the third shell section (64) or the connecting line (80) is perpendicular to the axial direction of the piston (10) or the direction of movement of the piston (10).

27. The brake cylinder (100) according to claim 26, wherein, The receiving shell (60) includes at least two snap-fit ​​sub-shells, each of the at least two sub-shells extending along the entire length of the receiving shell (60).

28. The brake cylinder (100) according to any one of claims 22 to 27, wherein, The displacement signal receiver (40) is disposed on the outer peripheral wall or one axial end of the cylinder (30).

29. The brake cylinder (100) according to any one of claims 22 to 28, wherein, The cylinder (30) has a first groove (35) communicating with the hydraulic chamber (31). The first end of the displacement signal generator (20) is disposed on the piston (10), and the second end of the displacement signal generator (20) is slidably disposed on the first groove (35). The displacement signal receiver (40) is located outside the first groove (35).

30. The brake cylinder according to any one of claims 22 to 29, wherein, One end of the cylinder (30) is formed with a first groove (35) communicating with the hydraulic chamber (31). The displacement signal receiver (40) is disposed at one end of the cylinder (30). The displacement signal receiver (40) is formed with a second groove (90). The displacement signal generator (20) is slidably disposed in the first groove (35) and the second groove (90).

31. The brake cylinder (100) according to claim 30, further comprising: A first seal (91) is disposed between the end face of one end of the cylinder (30) and the end face of the displacement signal receiver (40).

32. The brake cylinder (100) according to any one of claims 29-31, further comprising: The second seal (92) is disposed between the inner peripheral wall of the first groove (35) and the outer peripheral wall of the displacement signal generator (20).

33. A braking system (1000) comprising a brake cylinder (100) according to any one of claims 1-32.

34. A vehicle (2000) comprising a braking system (1000) according to claim 33.

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