Brake cylinder, brake system and vehicle

Abstract

The utility model discloses a brake cylinder, a brake system and a vehicle, the brake cylinder comprises: a cylinder body, which is provided with a hydraulic chamber; the piston is movably arranged in the hydraulic chamber; the displacement signal generator is arranged on the side, close to the hydraulic cavity, of the piston, moves along with the piston and outputs displacement information of the piston. Therefore, the piston in the brake cylinder can provide a mounting space for the displacement signal generator, so that the displacement signal generator can be more compact by reasonably utilizing the space, the arrangement of an independent mounting position for the displacement signal generator can be avoided, the assembly space can be optimized, the number of parts related to the displacement signal generator can be reduced, and the production cost can be reduced. Therefore, the cost can be reduced. Moreover, the piston is directly connected with the displacement signal generator, so that the loss of energy transmission between the piston and the displacement signal generator can be avoided, and the accuracy and reliability of signal transmission of the displacement signal generator can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of braking, in particular to a brake cylinder, a brake system and a vehicle. Background Art

[0002] In the prior art, in order to obtain information from the brake pedal, it is generally considered to provide a displacement sensor 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 connecting piece. The two maintain synchronous movement through the connecting piece. This not only increases the number of parts in the brake cylinder, but also increases the loss of energy transfer during the movement of the piston. It also occupies a large amount of installation space, making the overall volume of the brake cylinder larger.

[0003] Moreover, the displacement signal generator and the displacement signal receiver are both in the cylinder body of the brake cylinder, and the parts are difficult to replace. When the product detects an abnormality, it is difficult to observe the cause of the problem, and the replacement cost is high. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a brake cylinder, the piston in which can provide an installation space for a displacement signal generator, so that by rationally utilizing the space, it 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 the cost.

[0005] The utility model further provides a braking system.

[0006] The utility model also provides a vehicle.

[0007] The brake cylinder according to the first aspect of the present invention comprises: a cylinder body; a piston, which is movably arranged in the cylinder body and forms a hydraulic chamber with the cylinder body; a displacement signal generator, which is arranged on the piston and close to one side of the hydraulic chamber, and the displacement signal generator moves with the piston and outputs the displacement information of the piston.

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

[0009] According to some embodiments of the present utility model, the piston is formed with a mounting groove, and the displacement signal generator is arranged in the mounting groove that connects the piston and the hydraulic chamber.

[0010] According to some embodiments of the present invention, the displacement signal generator is integrally installed in the installation groove.

[0011] According to some embodiments of the present utility model, the mounting groove and the displacement signal generator are interference fit.

[0012] According to some embodiments of the present utility model, the mounting groove forms an opening on the end surface 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 the present utility model, the mounting groove forms an opening on the end surface of the piston, and the piston is provided with an oil hole, which is communicated with the mounting groove and is located between the opening and the displacement signal generator.

[0014] According to some embodiments of the present invention, one end of the displacement signal generator is disposed in the installation slot, and the other end of the displacement signal generator is located outside the installation slot.

[0015] According to some embodiments of the present invention, a protrusion structure is provided on the bottom surface of the mounting groove, and the protrusion structure divides the mounting groove into a mounting seat and an elastic member positioning groove, and a part of the displacement signal generator is located in the mounting seat.

[0016] According to some embodiments of the present invention, at least a portion of the displacement signal generator is built into the piston.

[0017] According to some embodiments of the present invention, the central axis of the displacement signal generator is parallel to the central axis of the piston and is spaced apart; 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 the present invention, a central axis of the displacement signal generator coincides with a central axis of the piston.

[0019] According to some embodiments of the utility model, the brake cylinder also includes: an elastic member, a limiting boss is provided at one end of the piston away from the displacement signal generator, the elastic member is sleeved on the piston, and the elastic member abuts between the limiting boss and the cylinder body to provide elastic force to the piston.

[0020] According to some embodiments of the present utility model, the displacement signal generator includes: a bracket, which is arranged on the piston; and a magnetic member, which is arranged on the bracket.

[0021] According to some embodiments of the present invention, the piston is formed with a mounting groove, and the bracket is installed in the mounting groove and has an interference fit with the mounting groove.

[0022] According to some embodiments of the utility model, the outer peripheral wall of the bracket is provided with a plurality of protrusions which are interference fit with the inner wall of the mounting groove, the plurality of protrusions extend along the axial direction of the bracket and are arranged at intervals along the circumference of the bracket, and air grooves which penetrate the axial direction of the bracket are formed between adjacent protrusions.

[0023] According to some embodiments of the utility model, the piston is formed with an installation groove, the bracket is installed in the installation groove, the inner peripheral wall of the installation groove is formed with an anti-slip groove, and the bracket is provided with an anti-slip structure, and the anti-slip structure cooperates with the anti-slip groove to prevent the bracket from slipping out of the installation groove.

[0024] According to some embodiments of the utility model, the anti-slip structure includes: a plurality of anti-slip claws, the plurality of anti-slip claws are arranged at intervals along the circumference of the bracket, a weakened groove is formed between adjacent anti-slip claws, and the distance between the anti-slip claws relative to each other 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 the present invention, the bracket is formed with a mounting cavity, and the magnetic component is arranged in the mounting cavity.

[0026] According to some embodiments of the present invention, the displacement signal generator is an integrated magnetic part.

[0027] According to some embodiments of the present utility model, the brake cylinder further comprises: a push rod, the push rod abuts against one side of the piston, and the push rod is isolated from the displacement signal generator by the piston.

[0028] According to some embodiments of the present utility model, the brake cylinder further comprises: a displacement signal receiver, which is arranged on the cylinder body and is used to receive the displacement information of the piston output by the displacement signal generator.

[0029] According to some embodiments of the utility model, the displacement signal receiver includes: a receiving shell, a first end of which is arranged close to the displacement signal generator; a receiving chip, which is arranged at the first end; a connecting wire, which extends along the axial direction of the receiving shell, one end of which is connected to the receiving chip, and the other end of the connecting wire extends out of the receiving shell.

[0030] According to some embodiments of the present invention, a mounting groove is provided at the first end of the receiving shell, the receiving chip is arranged at the bottom of the mounting groove, and the thickness of the receiving chip does not exceed the depth of the mounting groove.

[0031] According to some embodiments of the present utility model, the receiving shell includes a first shell segment and a second shell segment, the first shell segment is connected to the second shell segment, the first shell segment is closer to the displacement signal generator than the second shell segment; a receiving chip, the receiving chip is arranged in the first shell segment; a connecting wire, one end of the connecting wire is connected to the receiving chip, and the connecting wire extends in the second shell segment.

[0032] According to some embodiments of the utility model, the receiving shell also includes: a third shell segment, the third shell segment is connected to the second shell segment, the connecting line extends out of the third shell segment, and the extending direction of the third shell segment or the connecting line is perpendicular to the piston axis direction or the piston movement direction.

[0033] According to some embodiments of the present invention, the receiving shell is formed by buckling at least two sub-shells, and each of the sub-shells extends in the entire length direction of the receiving shell.

[0034] According to some embodiments of the present invention, the displacement signal receiver is arranged on the outer peripheral wall or one axial end of the cylinder body.

[0035] According to some embodiments of the utility model, the cylinder body is formed with a first slide groove connected to the hydraulic chamber, one end of the displacement signal generator is arranged on the piston, the other end of the displacement signal generator is slidably arranged in the first slide groove, and the displacement signal receiver is located outside the first slide groove.

[0036] According to some embodiments of the utility model, a first slide groove connected to the hydraulic chamber is formed at one end of the cylinder body, the displacement signal receiver is arranged at one end of the cylinder body, the displacement signal receiver is formed with a second slide groove, and the displacement signal generator can be slidably arranged in the first slide groove and the second slide groove.

[0037] According to some embodiments of the present utility model, the brake cylinder further includes: a first sealing member, wherein the first sealing member is arranged between an end surface of one end of the cylinder body and an end surface of the displacement signal receiver.

[0038] According to some embodiments of the present utility model, the brake cylinder further includes: a second sealing member, wherein the second sealing member is disposed between an inner peripheral wall of the first sliding groove and an outer peripheral wall of the displacement signal generator.

[0039] The braking system according to the second embodiment of the utility model includes: the above-mentioned brake cylinder.

[0040] A vehicle according to an embodiment of the third aspect of the utility model includes: the above-mentioned braking system.

[0041] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0043] Figure 1 It is a structural schematic diagram of a brake cylinder according to an embodiment of the utility model;

[0044] Figure 2 It is a structural schematic diagram of a brake cylinder including a displacement signal generator according to an embodiment of the utility model;

[0045] Figure 3 It is a structural schematic diagram of a brake cylinder containing an elastic member receiving groove according to an embodiment of the utility model;

[0046] Figure 4 is a schematic structural diagram of a displacement signal generator according to an embodiment of the utility model;

[0047] Figure 5 It is a structural schematic diagram of a hydraulic unit included in a brake cylinder according to an embodiment of the utility model;

[0048] Figure 6 is a cross-sectional view of a brake cylinder according to an embodiment of the utility model;

[0049] Figure 7 is a cross-sectional view of a limit cover according to an embodiment of the utility model;

[0050] Figure 8 yes Figure 7 Enlarged view of area A in the middle;

[0051] Fig. 9 It is a schematic diagram of the structure of the cooperation between the first limiting part and the second limiting part according to an embodiment of the utility model;

[0052] Fig.10 is a schematic structural diagram of a position limiting cover according to an embodiment of the utility model;

[0053] Fig.11 It is a structural schematic diagram of a position limiting member according to an embodiment of the utility model;

[0054] Fig.12 is a schematic structural diagram of a displacement signal receiver according to an embodiment of the utility model;

[0055] Fig.13 is a cross-sectional view of a first shell segment according to an embodiment of the utility model;

[0056] Fig.14 It is a structural schematic diagram of a hydraulic unit with a sink groove according to an embodiment of the utility model;

[0057] Fig.15 is a structural schematic diagram of a brake cylinder according to another embodiment of the utility model;

[0058] Fig.16 is a structural schematic diagram of a brake cylinder according to another embodiment of the utility model;

[0059] Fig.17 It is a schematic diagram of the structure of a piston containing a displacement signal generator according to an embodiment of the utility model;

[0060] Fig.18 is a schematic diagram of a braking system according to an embodiment of the utility model;

[0061] Fig.19 is a schematic diagram of a structure including a driving element in a braking system according to an embodiment of the utility model;

[0062] Fig. 20 It is a structural schematic diagram of a displacement signal receiver included in a braking system according to an embodiment of the utility model;

[0063] Fig.21 It is a structural schematic diagram of a displacement signal receiver according to an embodiment of the present utility model in which a through hole is provided in the third shell section;

[0064] Fig. 22 It is a cross-sectional view of a displacement signal receiver according to another embodiment of the utility model.

[0065] Reference numerals:

[0066] 100. Brake cylinder;

[0067] 10. Piston; 11. Mounting groove;

[0068] 12. opening; 13. oil hole; 141. mounting seat; 142. elastic member positioning groove; 143. protruding structure;

[0069] 15. Limiting boss;

[0070] 20. displacement signal generator; 21. bracket; 211. air tank;

[0071] 212, anti-drop structure; 213, anti-drop claw; 214, weakened groove; 215, installation cavity; 216, external thread; 217, protrusion;

[0072] 22. Magnetic parts;

[0073] 30. Cylinder body; 31. Hydraulic chamber; 32. Limiting cover; 321. First limiting part;

[0074] 331, control valve mounting hole; 332, sink; 34, through hole; 35, first slide groove;

[0075] 40. Displacement signal receiver;

[0076] 50. Limiting member; 51. Second limiting portion; 52. Push rod; 53. Space;

[0077] 60, receiving shell; 61, assembly groove; 62, first shell section; 63, second shell section; 631, fixing hole;

[0078] 64. The third shell segment;

[0079] 70. Receiving chip;

[0080] 80. Connecting wire;

[0081] 90. second slide groove; 91. first sealing member; 92. second sealing member; 93. elastic member; 94. control unit; 95. displacement sensor; 96. driving element; 97. electric control device;

[0082] 98. Positioning piece; 99. Positioning hole. DETAILED DESCRIPTION

[0083] Embodiments of the present invention are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary.

[0084] Reference below Figure 1-Figure 22 A brake cylinder 100 according to an embodiment of the present invention will be described.

[0085] like Figure 1 and Figure 2 As shown, the brake cylinder 100 according to the embodiment of the first aspect of the utility model includes: a cylinder body 30, a piston 10 and a displacement signal generator 20. The piston 10 can be movably arranged in the cylinder body 30, and the piston 10 and the cylinder body 30 form a hydraulic chamber 31. The displacement signal generator 20 is arranged on the piston 10, and the displacement signal generator 20 is 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.

[0086] Specifically, the piston and displacement signal generator in a traditional brake cylinder are generally indirectly connected through a connecting part, which may 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 connected to the displacement signal generator. This not only increases the number of parts in the brake cylinder, but also increases the loss of energy transfer during the movement of the piston. It also occupies a large amount of installation space, making the overall volume of the brake cylinder larger.

[0087] Therefore, the displacement signal generator 20 in the brake cylinder 100 is arranged on the piston 10, and the two are directly connected. The piston 10 can provide an installation space for the displacement signal generator 20. In this way, by rationally utilizing the space, it can be made more compact, thereby avoiding the need to set an independent installation position for the displacement signal generator 20, and optimizing the assembly space and the number of parts, reducing the hole portion of the displacement signal transmitter in the hydraulic unit, the setting of the connecting rod, and the hole portion setting of the displacement sensor in the hydraulic unit, and also reducing the number of parts related to the displacement signal generator 20, thereby reducing costs.

[0088] Furthermore, the piston 10 and the displacement signal generator 20 are directly connected, which can avoid the loss of energy transmission 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.

[0089] Moreover, the displacement signal generator 20 is close to one side of the hydraulic chamber 31 , so that the distance between the displacement signal generator 20 and the displacement signal receiver 40 can be reduced, thereby improving the measurement accuracy of the displacement signal generator 20 .

[0090] In addition, during the braking process, the axial movement of the piston 10 can drive the displacement signal generator 20 to move, so that the displacement signal generator 20 can output the displacement information of the piston 10. By changing the displacement position between the displacement signal generator 20 and the displacement signal receiver 40, the change of the magnetic field sensed by the displacement signal receiver 40 of the displacement sensor can be changed, thereby changing the change of the electrical signal output by the displacement signal receiver 40. In this way, the braking depth of the driver can be collected through the displacement sensor 95, and the control unit 94 controls the power pump to generate the required pressure through calculation and analysis, thereby meeting the driver's braking needs.

[0091] Thus, the piston 10 in the brake cylinder 100 can provide installation space for the displacement signal generator 20, so that it can be made more compact by rationally utilizing the space, thereby avoiding the need to set an independent installation 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 piston 10 and the displacement signal generator 20 are directly connected, thereby avoiding the loss of energy transmission between the piston 10 and the displacement signal generator 20, and reducing 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, and also improving the accuracy and reliability of the signal transmission of the displacement signal generator 20.

[0092] According to some embodiments of the present invention, Figure 2 As shown, at least a portion of the displacement signal generator 20 is disposed in the hydraulic chamber 31 .

[0093] Among them, a part of the displacement signal generator 20 is fixedly connected to the piston 10, and the other 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 also the distance between the displacement signal generator 20 and the displacement signal receiver 40 can be reduced, thereby improving the accuracy and reliability of the signal transmission of the displacement signal generator 20.

[0094] According to some embodiments of the present invention, Figure 2 As shown, the piston 10 is formed with a mounting groove 11 , and the displacement signal generator 20 is disposed in the mounting groove 11 where the piston 10 communicates with the hydraulic chamber 31 .

[0095] Among them, the piston 10 is provided with a mounting groove 11, which can facilitate the fixed installation of a part of the displacement signal generator 20 in the mounting groove 11, and the displacement signal generator 20 is arranged 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.

[0096] According to some embodiments of the present invention, Figure 1 As shown, at least a portion of the displacement signal generator 20 is built into the piston 10 .

[0097] Among them, at least a part of the displacement signal generator 20 is built into the piston 10, and at least a part of the displacement signal generator 20 is directly connected to the piston 10, which can not only make the connection between the displacement signal generator 20 and the piston 10 more firmly, but also realize 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.

[0098] According to some embodiments of the present invention, Figure 1 As shown, 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 is 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.

[0099] Among them, when the central axis of the displacement signal generator 20 remains parallel to the central axis of the piston 10, it can ensure that the displacement signal generator 20 can accurately measure the displacement of the piston 10, and can also reduce the measurement deviation caused by assembly errors, thereby improving the measurement accuracy of the displacement signal generator 20.

[0100] Furthermore, 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, and this stress will cause wear or damage to the connection between the displacement signal generator 20 and the piston 10. In this way, the central axis of the displacement signal generator 20 is arranged in parallel with the central axis of the piston 10, so that the generation of such unnecessary mechanical stress can be minimized.

[0101] Moreover, the central axis of the displacement signal generator 20 is spaced apart from the central axis of the piston 10 , so that when the displacement signal generator 20 is connected to the piston 10 , interference between components at the central axis of the displacement signal generator 20 and the piston 10 can be avoided.

[0102] In addition, the center axis of the displacement signal generator 20 is spaced from the center axis of the piston 10, so that further adjustments can be made according to actual conditions. By controlling the distance between the center axis of the displacement signal generator 20 and the center axis of the piston 10, different application scenarios can be adapted. For example, by increasing the distance between the center axis of the displacement signal generator 20 and the center axis of the piston 10, the distance between the displacement signal generator 20 and the displacement signal receiver can be shortened, thereby expanding the measurement range of the displacement signal generator 20, or by reducing the distance between the center axis of the displacement signal generator 20 and the center axis of the piston 10, the measurement accuracy of the displacement signal generator 20 can be improved.

[0103] Furthermore, 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. This can reduce the distance between the displacement signal generator 20 and the displacement signal receiver, thereby improving the stability of the displacement signal transmission between the displacement signal generator 20 and the displacement signal receiver, and also improving the measurement accuracy.

[0104] According to another embodiment of the present invention, Fig.15 As shown, the central axis of the displacement signal generator 20 coincides with the central axis of the piston 10 .

[0105] Among them, 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 also the symmetry and dynamic balance of the entire brake cylinder 100 can be further guaranteed, thereby avoiding uneven force on the entire brake cylinder 100, and preventing vibration problems caused by the asymmetry of the brake cylinder 100, thereby affecting the measurement accuracy of the displacement signal generator 20.

[0106] According to some embodiments of the present invention, Figure 1 As shown, the piston 10 is formed with a mounting groove 11 , and the displacement signal generator 20 is mounted in the mounting groove 11 .

[0107] Among them, since the displacement signal generator 20 is in the shape of an elongated strip and its cross-section can be circular, the piston 10 is provided with an installation groove 11 in the shape of an elongated strip. In this way, the piston 10 and the displacement signal generator 20 are correspondingly arranged, thereby facilitating the connection and cooperation between the displacement signal generator 20 and the piston 10.

[0108] According to some embodiments of the present invention, Figure 2 As shown, the displacement signal generator 20 is integrally installed in the installation groove 11. In this way, the piston 10 is provided with the installation groove 11, which not only facilitates the installation of the displacement signal generator 20, but also protects the displacement signal generator 20. Moreover, the displacement signal generator 20 extends into the installation groove 11, which can avoid interference between the displacement signal generator 20 and other components, and can also make the structure more compact.

[0109] According to some embodiments of the present invention, Figure 2 As shown, the mounting groove 11 and the displacement signal generator 20 are interference fit.

[0110] During braking, the piston 10 drives the displacement signal generator 20 to make axial movement, and the mounting groove 11 and the displacement signal generator 20 are interference fit, so that the displacement signal generator 20 is more tightly connected with the mounting groove 11, which 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 the service life of the displacement signal generator 20.

[0111] According to some embodiments of the present invention, Figure 2 As shown, the mounting groove 11 is formed with an opening 12 on the end surface 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 .

[0112] Among them, after the displacement signal generator 20 is installed in the installation groove 11, the opening 12 can be shrunk by riveting process, 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.

[0113] According to some embodiments of the present invention, Fig.17 As shown, the mounting groove 11 forms an opening 12 on the end surface of the piston 10 , and the piston 10 is provided with an oil hole 13 , which is communicated with the mounting groove 11 , and the oil hole 13 is located between the opening 12 and the displacement signal generator 20 .

[0114] Among them, since the piston 10 performs axial reciprocating motion, sliding friction occurs during the movement of the piston 10, which makes the piston 10 prone to wear. The setting of 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, thereby reducing the energy loss of the piston 10 during the movement.

[0115] According to some embodiments of the present invention, Fig.15 and Fig.16 As shown, one end of the displacement signal generator 20 is disposed in the mounting groove 11 , and the other end of the displacement signal generator 20 is located outside the mounting groove 11 .

[0116] Among them, one end of the displacement signal generator 20 is located in the mounting groove 11, which can facilitate the connection and fixation of the displacement signal generator 20 and the piston 10. Moreover, the other end of the displacement signal generator 20 is located outside the mounting groove 11, which can facilitate the output of the displacement signal and reduce the interference to the displacement signal output of the displacement signal generator 20, thereby ensuring the stability of the displacement signal output of the displacement signal generator 20.

[0117] According to some embodiments of the present invention, Fig.15 As shown, a protruding structure 143 is provided on the bottom surface of the mounting groove 11 , and the protruding structure 143 separates the mounting groove 11 into a mounting seat 141 and an elastic member positioning groove 142 , and a part of the displacement signal generator 20 is located in the mounting seat 141 .

[0118] Among them, the mounting seat 141 is used to install the displacement signal generator 20, and the elastic member positioning groove 142 is used to position and install the elastic member 93. The setting of the protruding structure 143 can avoid the displacement signal generator 20 from interfering with the elastic member 93. A part of the displacement signal generator 20 is located in the mounting seat 141, so that the installation of the displacement signal generator 20 can be convenient. The elastic member positioning groove 142 can provide an accurate installation position for the elastic member 93. The elastic member 93 is located in the elastic member positioning groove 142. The elastic member 93 can be a spring, which can provide the piston 10 with the power to automatically return. During braking, the piston 10 compresses the elastic member 93 under the action of external force. At this time, the elastic member 93 is in a compressed state. When the braking is completed, the external force is removed, and the elastic member 93 is restored to its original state. In this way, the piston 10 gradually returns to its original initial position under the reaction force, so that the piston 10 can be convenient for the next braking.

[0119] In addition, the provision of the elastic member positioning groove 142 can realize the rapid positioning and installation of the elastic member 93 and can also prevent the installation position of the elastic member 93 from being misaligned.

[0120] According to the specific embodiment of the utility model, Figure 4 As shown, the displacement signal generator 20 includes: a bracket 21 and a magnetic member 22 . The bracket 21 is arranged on the piston 10 , and the magnetic member 22 is arranged on the bracket 21 .

[0121] Specifically, the displacement signal generator 20 is mainly composed of a bracket 21 and a magnetic part 22. Since the displacement signal generator 20 needs to be fixedly connected to the piston 10, the setting of the bracket 21 can not only facilitate the connection of the magnetic part 22 to the piston 10, but also provide an installation space for the magnetic part 22, and also play a role in protecting the magnetic part 22, thereby improving the service life of the displacement signal generator 20.

[0122] Furthermore, the magnetic member 22 is a signal magnet, which is located coaxially inside the bracket 21. The signal magnet can be one segment or multiple segments. The magnetization direction of the magnet is axial magnetization, one end is set as the N pole, and the other end is set as the S pole.

[0123] According to the specific embodiment of the utility model, Figure 2 As shown, the piston 10 is formed with a mounting groove 11 , and the bracket 21 is mounted in the mounting groove 11 , and the bracket 21 and the mounting groove 11 are interference fit.

[0124] Among them, the bracket 21 contains a magnetic part 22, which can be a magnet. The piston 10 is set as a metal part. The bracket 21 and the mounting groove 11 opened in the piston 10 are interference fit. In this way, the cooperation between the magnetic part 22 and the piston 10 can be achieved, and the fixation of the magnetic part 22 can also be facilitated.

[0125] According to some embodiments of the present invention, Figure 4 As shown, the outer peripheral wall of the bracket 21 is provided with a plurality of protrusions 217 which 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 the plurality of protrusions 217 are arranged at intervals along the circumference of the bracket 21, and air grooves 211 which penetrate the axial direction of the bracket 21 are formed between adjacent protrusions 217.

[0126] The arrangement of the mounting groove 11 can facilitate the bracket 21 to extend into the mounting groove 11 of the piston 10 , thereby facilitating the connection and fixation of the piston 10 and the bracket 21 .

[0127] In addition, the outer wall of the bracket 21 is provided with a plurality of protrusions 217, and air grooves 211 are formed between adjacent protrusions 217. The air grooves 211 are through grooves that can serve as exhaust. Moreover, the air grooves 211 extend to both ends of the bracket 21. In this way, the exhaust can be fully discharged, thereby improving the exhaust efficiency of the displacement signal generator 20.

[0128] According to some embodiments of the present invention, Figure 4 As shown, there are a plurality of air grooves 211 , each of which extends along the axial direction of the bracket 21 , and the plurality of air grooves 211 are spaced apart along the circumferential direction of the bracket 21 .

[0129] Each gas groove 211 extends along the axial direction of the bracket 21, so that sufficient exhaust can be performed along the axial direction of the bracket 21. Multiple gas grooves 211 are evenly spaced along the circumference of the bracket 21, so as to further improve the exhaust efficiency and the balance and stability of the bracket 21.

[0130] According to some embodiments of the present invention, Figure 4 As shown, the piston 10 is formed with a mounting groove 11, the bracket 21 is installed in the mounting groove 11, the inner wall of the mounting groove 11 is formed with an anti-slip groove, and the bracket 21 is provided with an anti-slip structure 212, which cooperates with the anti-slip groove to prevent the bracket 21 from slipping out of the mounting groove 11.

[0131] Among them, a protruding anti-slip structure 212 is provided at one end of the bracket 21 facing the mounting groove 11, and the anti-slip structure 212 is tapered as a whole, so that the cross-section of the anti-slip structure 212 is larger than the cross-section of the main body of the bracket 21, thereby increasing the connection strength between the bracket 21 and the piston 10. Accordingly, an anti-slip groove is provided on the inner wall of the mounting groove 11, and the anti-slip structure 212 extends into the anti-slip groove for connection and cooperation, thereby making the connection and cooperation between the bracket 21 and the piston 10 more stable and firm.

[0132] According to some embodiments of the present invention, Figure 4As shown, the anti-slip structure 212 includes: a plurality of anti-slip claws 213, the plurality of anti-slip claws 213 are arranged at intervals along the circumference of the bracket 21, a weakened groove 214 is formed between adjacent anti-slip claws 213, and the distance between the anti-slip claws 213 relative to each other in the radial direction of the bracket 21 gradually increases in the direction away from the bottom of the hole of the mounting groove 11.

[0133] Among them, the anti-dropout claw 213 is an arc claw, and multiple anti-dropout claws 213 are evenly spaced along the circumference of the bracket 21, which can make the force at the connection between the anti-dropout claw 213 and the anti-dropout groove more uniform, and can also further make the connection between the anti-dropout claw 213 and the anti-dropout groove more firmly.

[0134] In addition, the distance between the anti-slip claws 213 relative to each other in the radial direction of the bracket 21 gradually increases in a conical shape in the direction away from the bottom of the mounting groove 11. This can increase the strength of the anti-slip claws 213 and facilitate the assembly of the anti-slip claws 213 and the anti-slip groove. The anti-slip claws 213 can gradually fit closely with the anti-slip groove during the assembly process.

[0135] According to some embodiments of the present invention, Figure 4 As shown, the bracket 21 is formed with a mounting cavity 215 , and the magnetic member 22 is disposed in the mounting cavity 215 .

[0136] The bracket 21 has an installation cavity 215 formed therein. The installation cavity 215 can provide an installation space for the magnetic component 22 , thereby facilitating the fixed installation of the magnetic component 22 .

[0137] According to some embodiments of the present invention, Fig.15 and Fig.16 As shown, the piston 10 is formed with a mounting groove 11 , one end of the bracket 21 is arranged in the mounting groove 11 , and the magnetic member 22 is arranged on the outer peripheral wall of the other end of the bracket 21 .

[0138] The bracket 21 thus arranged can solve the installation problem of the displacement signal generator 20 on the one hand, and can make the magnetic member 22 better away from the piston 10 on the other hand, so that the magnetic member 22 is better close to the displacement signal receiver 40, which is beneficial to the subsequent displacement detection. The magnetic member 22 can be one or more.

[0139] According to another embodiment of the present invention, Fig.15 As shown, the piston 10 is formed with a mounting groove 11, 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 matches the threaded hole. Or one end of the bracket 21 is bonded to the mounting groove 11.

[0140] Specifically, the piston 10 is provided with a mounting groove 11, and the external thread 216 at one end of the bracket 21 is threadedly matched with the threaded hole, which has a self-locking effect, 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.

[0141] In addition, one end of the bracket 21 is bonded to the mounting groove 11 , so that the one end of the bracket 21 can be bonded to the mounting groove 11 more firmly.

[0142] According to some embodiments of the present invention, the displacement signal generator 20 is an integrated magnetic component.

[0143] For example, the displacement signal generator 20 can be a magnet made of permanent magnetic material. Magnets made of permanent magnetic material have higher magnetic properties and stability and will not lose their magnetic properties due to external interference or temperature changes. This allows the magnet made of permanent magnetic material to provide a more stable and reliable magnetic field when used as the displacement signal generator 20, thereby improving measurement accuracy and stability.

[0144] Moreover, the magnet made of permanent magnetic material is relatively small in size and can provide a strong magnetic field in a limited space, which means that when the magnet made of permanent magnetic material is used as a displacement signal generator 20, it can occupy less space, making it more compact and easier to install.

[0145] According to some embodiments of the present invention, Figure 1 As shown, the cylinder body 30 further includes: a push rod 52 , the push rod 52 abuts against one side of the piston 10 , and the push rod 52 is isolated from the displacement signal generator 20 by the piston 10 .

[0146] The cylinder body 30 is mainly composed of a limiting cover 32 and the cylinder body 30 . The limiting cover 32 covers the opening 12 of the cylinder body 30 to seal the hydraulic chamber 31 , thereby ensuring the sealing of the hydraulic chamber 31 .

[0147] The limit cover 32 and the cylinder body 30 together form a space 53, which can facilitate the axial movement of a part of the piston 10 in the space 53. The push rod 52 abuts against one side of the piston 10, which can facilitate the axial movement of the piston 10. The push rod 52 and the displacement signal generator 20 are isolated by the piston 10, thereby preventing the push rod 52 from interfering with and damaging the displacement signal generator 20.

[0148] In addition, the displacement signal receiver 40 is connected to the top of the cylinder body 30, and the displacement signal receiver 40 is arranged close to the displacement signal generator 20, so as to ensure the stability of the displacement signal transmission, and the opening 12 of the limit cover 32 is connected to the cylinder body 30 to determine the starting position of the piston 10, so that the position of the piston 10 can be limited.

[0149] According to some embodiments of the present invention, the displacement signal receiver 40 is disposed on the cylinder body 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 body 30 .

[0150] Among them, by vertically installing the displacement signal receiver 40, the movement 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.

[0151] According to some embodiments of the present invention, Figure 5 As shown, a control valve mounting hole 331 is provided on the outer peripheral wall of the cylinder body 30 , and the control valve mounting hole 331 and the displacement signal receiver 40 are located on the same side of the cylinder body 30 , and the control valve mounting hole 331 and the displacement signal receiver 40 are spaced apart.

[0152] The outer peripheral wall of the cylinder body 30 is provided with a plurality of control valve mounting holes 331, which can be mounting grooves 11 of the solenoid valve. 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. Moreover, the control valve mounting holes 331 and the displacement signal receiver 40 are arranged at intervals, thereby avoiding interference between the control valve and the displacement signal receiver 40, and avoiding mutual influence between the control valve and the displacement signal receiver 40.

[0153] According to some embodiments of the present invention, Fig.14 As shown, the outer peripheral wall of the cylinder body 30 is provided with a sinking groove 332, and one end of the displacement signal receiver 40 is installed in the sinking groove 332. The setting of the sinking groove 332 can provide an installation space for the displacement signal receiver 40, so that the displacement signal receiver 40 can be easily fixed and installed. Moreover, the setting of the sinking groove 332 can also effectively reduce the volume occupied by one end of the displacement signal receiver 40.

[0154] Furthermore, 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 through the sink groove 332, which has good adaptability.

[0155] According to some embodiments of the present invention, Figure 6-Figure 9 As shown, the brake cylinder 200 also includes: a limit member 50, the limit member 50 is arranged on the piston 10, the limit cover 32 is provided with a first limit portion 321, the limit member 50 is provided with a second limit portion 51, and the first limit portion 321 and the second limit portion 51 cooperate in the circumferential upper limit of the piston 10.

[0156] The limiting member 50 is located between the limiting cover 32 and the piston 10. The limiting member 50 is connected and matched with the piston 10 to form a whole. The limiting cover 32 is fixedly connected to the cylinder body 30. The limiting member 50 is provided with a second limiting portion 51. Correspondingly, the limiting cover 32 is provided with a first limiting portion 321. The first limiting portion 321 and the second limiting portion 51 are limited and matched, so as to prevent the piston 10 from rotating in the circumferential direction. Specifically, the first limiting portion 321 and the second limiting portion 51 are clearance-matched. When the piston 10 makes a reciprocating motion, the rotational motion of the piston 10 can be effectively limited, and the signal receiver can be prevented from being out of the effective signal range of the signal generator, so as to ensure the relative position of the displacement signal receiver 40 and the displacement signal generator 20 in the radial direction.

[0157] According to some embodiments of the present invention, Figure 7-Figure 9 As shown, the first limiting portion 321 is constructed as one of a limiting protrusion and a limiting groove, and the second limiting portion 51 is constructed as the other of a limiting protrusion and a limiting groove.

[0158] When the outer periphery of the second limiting portion 51 is set as a limiting protrusion, the first limiting portion 321 is correspondingly set as a limiting groove, and the limiting groove can be set as a semicircular arc groove. When the outer periphery of the second limiting portion 51 is set as a limiting groove, the first limiting portion 321 is correspondingly set as a limiting protrusion, and the limiting protrusion and the limiting groove are limitedly matched, so that the piston 10 can be prevented from rotating in the circumferential direction, and the displacement signal can be prevented from being distorted, resulting in failure of the brake system.

[0159] According to some embodiments of the present invention, Figure 6 As shown, 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 an installation space for the limiting member 50, and the limiting member 50 and the limiting cover 32 are limitedly matched to form a whole, which can prevent the limiting member 50 and the limiting cover 32 from relative movement, thereby further ensuring that the circumferential position of the piston 10 does not rotate.

[0160] According to some embodiments of the present invention, Figure 6 and Fig.12 As shown, the displacement signal receiver 40 includes: a receiving shell 60, a receiving chip 70 and a connecting wire 80. The first end of the receiving shell 60 is arranged close to the displacement signal generator 20, the receiving chip 70 is arranged at the first end of the receiving shell 60, the connecting wire 80 extends along the axial direction of the receiving shell 60, one end of the connecting wire 80 is connected to the receiving chip 70, and the other end of the connecting wire 80 extends out of the other end of the receiving shell 60.

[0161] Among them, the displacement signal receiver 40 is mainly composed of a receiving shell 60, a receiving chip 70 and a connecting wire 80. One end of the connecting wire 80 is connected to the receiving chip 70, and the other end of the connecting wire 80 extends out of the other end of the receiving shell 60. Furthermore, the connecting wire 80 can be connected to the control unit 94, so that the displacement electrical signal can be transmitted to the control unit 94. The control unit 94 controls the power pump to generate the required pressure through calculation and analysis, thereby meeting the driver's braking needs.

[0162] According to some embodiments of the present invention, Figure 6 , Fig.12 and Fig.13 As shown, a first end of the receiving shell 60 is provided with a mounting groove 61 , and the receiving chip 70 is arranged at the bottom of the mounting groove 61 . The thickness of the receiving chip 70 does not exceed the depth of the mounting groove 61 .

[0163] Among them, the setting of the assembly groove 61 can reasonably utilize the space of the assembly groove 61 for arrangement. Similarly, there is no need to process a corresponding avoidance structure on the outer wall of the cylinder body 30 to avoid the protrusion of the receiving chip 70. For example, the avoidance structure is a groove, thereby reducing the processing procedures and costs.

[0164] Furthermore, the thickness of the receiving chip 70 does not exceed the depth of the assembly groove 61 , thereby protecting the receiving chip 70 and preventing the receiving chip 70 from collision and damage.

[0165] According to some embodiments of the present invention, Fig.12 As shown, the displacement signal receiver 40 includes: a receiving shell 60, a receiving chip 70 and a connecting line 80. The receiving shell 60 includes a first shell segment 62 and a second shell segment 63. The second shell segment 63 is connected to the first shell segment 62, so that the first shell segment 62 can be closer to the displacement signal generator 20 than the second shell segment 63. The receiving chip 70 is arranged in the first shell segment 62, one end of the connecting line 80 is connected to the receiving chip 70, and the connecting line 80 extends in the second shell segment 63.

[0166] The receiving chip 70 is arranged in the first shell section 62, which can ensure the relative position of the receiving chip 70 and the displacement signal generator 20, so that the signal receiver can be within the effective signal range of the signal generator. The connecting line 80 extends in the second shell section 63, and the second shell section 63 can play the role of fixing the connecting line 80, protecting the connecting line 80, and guiding the line.

[0167] Also, if Fig.14As shown, the cylinder body 30 is provided with a positioning hole 99, and a plurality of positioning holes 99 can be provided. The first shell segment 62 is provided with a positioning member 98, and the positioning member 98 penetrates the positioning hole 99. The positioning member 98 can be a positioning pin, and a plurality of positioning pins can be provided correspondingly. The positioning member 98 penetrates the positioning hole 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 is also convenient.

[0168] According to some embodiments of the present invention, Fig.12 As shown, the receiving shell also includes: a third shell segment 64, the third shell segment 64 is connected to the second shell segment 63, the connecting line 80 extends out of the third shell segment 64, and the extending 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.

[0169] The other end of the connecting wire 80 extends out of the third shell segment 64 , so that the connecting wire 80 can be electrically connected to the control unit 94 .

[0170] In addition, the extending direction of the third shell segment 64 or the connecting line 80 is perpendicular to the axial direction of the cylinder body 30 or the moving direction of the piston 10 , thereby preventing the connecting line 80 from being disturbed by the movement of the piston 10 .

[0171] According to another embodiment of the present invention, Fig.21 As shown, the cylinder body 30 is formed with a through hole 34 , and the third shell segment 64 is disposed through the through hole 34 .

[0172] Among them, a through hole 34 is opened inside the cylinder body 30, which can facilitate the penetration of the third shell segment 64. A connecting line 80 is arranged in the third shell segment 64. The connecting line 80 extends along the axial direction of the third shell segment 64, which can facilitate electrical connection with the control unit, thereby facilitating the transmission of the displacement signal.

[0173] According to some embodiments of the present invention, Fig. 22 As shown, the second shell segment 63 is formed with a fixing hole 631 , and the second shell segment 63 is suitable for being installed on the cylinder body 30 by means of a fastener penetrating the fixing hole 631 .

[0174] The second shell section 63 may be provided with a fixing hole 631 , and the fastener is a screw, and the fastener passes through the fixing hole 631 , so as to further make the connection between the displacement signal receiver and the cylinder body 30 more stable and firm.

[0175] According to some embodiments of the present invention, the receiving shell 60 is formed by buckling at least two subshells, each of which extends along the entire length of the receiving shell 60. In this way, the installation and removal of the receiving shell 60 can be facilitated, and the maintenance of the internal circuit of the receiving shell 60 can also be facilitated.

[0176] According to some embodiments of the present invention, Fig.14 and Fig.15 As shown, the displacement signal receiver 40 is disposed on the outer peripheral wall or one axial end of the cylinder body 30 .

[0177] Among them, Fig.14 As shown, the displacement signal receiver 40 is sleeved on the outer wall of the cylinder body 30, the shell of the displacement signal generator 20 and the shell of the cylinder body 30 are an integrated structure, the piston 10 is installed in the cylinder body 30, a piston 10 hole is opened in the cylinder body 30, the piston 10 passes through the piston 10 hole, and the displacement signal generator 20 hole is provided on the opposite side of the piston 10 hole, and the displacement signal generator 20 is located in the displacement signal generator 20 hole.

[0178] In addition, the displacement signal generator 20 is connected to the piston 10 by threads or bonding, and the displacement signal receiver 40 is fixed to the outer wall of the cylinder body 30 by screws or bonding, so that the displacement signal receiving chip 70 and the circuit part are close to the side of the displacement signal generator 20 shell, for receiving the signal generated by the movement of the displacement signal generator 20.

[0179] like Fig.15 As shown, the housing of the displacement signal generator 20 and the housing of the displacement signal receiver 40 are an integrated structure, the piston 10 is installed in the cylinder 30, and the cylinder 30 has a hole for the displacement signal generator 20 on the opposite side of the piston 10 hole, and the displacement signal generator 20 is connected to the piston 10 by threading or bonding. There is a hole in the middle of the displacement signal receiver 40 to accommodate the opening 12 of the displacement generator, and the axis of the hole is parallel to the central axis of the piston 10. The hole can be a regular shape, for example, a circular hole, or an irregular hole. The end face of the housing opening 12 of the displacement signal receiver 40 cooperates with the hole surface of the cylinder 30 through an O-ring or a gasket to form a sealed cavity and is fixed with the housing of the cylinder 30 without relative movement. 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 wrapped in the housing. The displacement signal receiver 40 will not surround the hole of the displacement signal generator 20. The uncovered area can be made semi-transparent to facilitate observation of the internal situation, or it can be completely wrapped without a perspective window.

[0180] When the piston 10 moves, it drives the displacement signal generator 20 connected to the piston 10 , and the displacement signal is outputted through the movement of the permanent magnet on the displacement signal generator 20 . The displacement signal receiver 40 transmits the displacement signal back to the circuit board.

[0181] According to some embodiments of the present invention, Fig.15 As shown, the cylinder body 30 is formed with a first slide groove 35 connected to the hydraulic chamber 31, one end of the displacement signal generator 20 is arranged on the piston 10, and the other end of the displacement signal generator 20 is slidably arranged in the first slide groove 35, and the displacement signal receiver 40 is located outside the first slide groove 35.

[0182] In which, during the braking process, the other end of the piston 10 slides in the first slide groove 35, so that the displacement signal generator 20 can 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 slide groove 35, so that the control unit 94 can control the power pump to generate the required pressure, thereby meeting the driver's braking needs.

[0183] According to some embodiments of the present invention, Fig.16 As shown, a first slide groove 35 communicating with the hydraulic chamber 31 is formed at one end of the cylinder body 30, a displacement signal receiver 40 is arranged at one end of the cylinder body 30, a second slide groove 90 is formed on the displacement signal receiver 40, and the displacement signal generator 20 can be slidably arranged in the first slide groove 35 and the second slide groove 90.

[0184] In which, during the braking process, the other end of the piston 10 slides in the first slide groove 35 and the second slide groove 90, so that the displacement signal generator 20 can 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 slide groove 35, so that the control unit 94 can control the power pump to generate the required pressure, thereby meeting the driver's braking needs.

[0185] According to some embodiments of the present invention, Fig.16 As shown, the brake cylinder 200 further includes: a first sealing member 91, which is disposed between an end surface of one end of the cylinder body 30 and an end surface of the displacement signal receiver 40. The first sealing member 91 can be configured as an O-ring or a gasket, so as to improve the sealing performance between the cylinder body 30 and the displacement signal receiver 40.

[0186] According to some embodiments of the present invention, Fig.16 As shown, the brake cylinder 200 further includes: a second sealing member 92 , which is disposed between the inner peripheral wall of the first sliding groove 35 and the outer peripheral wall of the displacement signal generator 20 .

[0187] The second sealing member 92 may be configured as a leather cup sealing ring, thereby improving the sealing performance between the inner peripheral wall of the first slide groove 35 and the outer peripheral wall of the displacement signal generator 20 .

[0188] According to some embodiments of the present invention, Fig. 20 As shown, the brake cylinder 200 also includes: an elastic member 93, a limiting boss 15 is provided at one end of the piston 10 away from the displacement signal generator 20, the elastic member 93 is sleeved on the piston 10, and the elastic member 93 abuts between the limiting boss 15 and the cylinder body 30, thereby providing elastic force to the piston 10.

[0189] The elastic member 93 can be set as a spring, and the setting of the limiting boss 15 can increase the contact area with the elastic member 93, so that the cooperation can be more stable. The elastic member 93 is sleeved on the piston 10, and can provide the piston 10 with power to automatically return to the initial position.

[0190] The braking system according to the embodiment of the second aspect of the utility model comprises: the brake cylinder 200 of the above embodiment.

[0191] A vehicle according to an embodiment of the third aspect of the utility model includes: a braking system of the above embodiment.

[0192] Among them, Fig.19 and Fig. 20 As shown, the braking system includes: a driving element 96, which is fixed to the cylinder body 30. The driving element 96 includes a motor and a rotation-translation mechanism. The rotating component on the rotation-translation mechanism is connected to the motor rotor and rotates with the rotor. The translation component on the rotation-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 brake piston 10, and the piston 10 is inserted into the sealing groove of the cylinder body 30. The purpose of pressurization is achieved by moving the piston 10 up and down, and the high hydraulic medium is transmitted to the vehicle brake wheel end through the oil circuit adjustment system of the cylinder body 30, which can achieve the effect of decelerating the vehicle. There is an oil outlet on the cylinder body 30, which is connected to the vehicle brake wheel end through a pipeline.

[0193] The driving signal of the motor comes from the electronic control device 97. The electronic control device 97 receives the signal of the displacement sensor 95 and determines the driver's braking intention by analyzing the digital signal or the analog signal. In this way, the motor can be quickly controlled to achieve the braking effect the driver wants.

[0194] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0195] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0196] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A brake cylinder, characterized in that: include: Cylinder body; a piston, the piston being movably disposed in the cylinder body and forming a hydraulic chamber with the cylinder body; A displacement signal generator is arranged on a side of the piston close to the hydraulic chamber, and the displacement signal generator moves with the piston and outputs displacement information of the piston.

2. The brake cylinder according to claim 1, characterized in that: At least a portion of the displacement signal generator is disposed in the hydraulic chamber.

3. The brake cylinder according to claim 1 or 2, characterized in that: The piston is formed with a mounting groove, and the displacement signal generator is arranged in the mounting groove where the piston communicates with the hydraulic chamber.

4. The brake cylinder according to claim 3, characterized in that: The displacement signal generator is integrally installed in the installation groove.

5. The brake cylinder according to claim 4, characterized in that: The mounting groove and the displacement signal generator are interference fit.

6. The brake cylinder according to claim 4, characterized in that: The mounting groove forms an opening on the end surface of the piston, and the cross-sectional area of ​​the opening is smaller than the cross-sectional area of ​​the displacement signal generator.

7. The brake cylinder according to claim 4, characterized in that: The mounting groove is formed with an opening on the end surface of the piston, and the piston is provided with an oil hole, which is communicated with the mounting groove and is located between the opening and the displacement signal generator.

8. The brake cylinder according to claim 3, characterized in that: One end of the displacement signal generator is arranged in the installation slot, and the other end of the displacement signal generator is located outside the installation slot.

9. The brake cylinder according to claim 8, characterized in that: The bottom surface of the mounting groove is provided with a protruding structure, and the protruding structure divides the mounting groove into a mounting seat and an elastic member positioning groove, and a part of the displacement signal generator is located in the mounting seat.

10. The brake cylinder according to claim 1, characterized in that: At least a portion of the displacement signal generator is built into the piston.

11. The brake cylinder according to claim 1, characterized in that: The central axis of the displacement signal generator is parallel to the central axis of the piston and is spaced apart; 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.

12. The brake cylinder according to claim 1, characterized in that: The central axis of the displacement signal generator coincides with the central axis of the piston.

13. The brake cylinder according to claim 1, characterized in that: Also includes: An elastic member, a limiting boss is arranged at one end of the piston away from the displacement signal generator, the elastic member is sleeved on the piston, and the elastic member abuts between the limiting boss and the cylinder body to provide elastic force to the piston.

14. The brake cylinder according to claim 1, characterized in that: The displacement signal generator comprises: a bracket, the bracket being arranged on the piston; A magnetic component is arranged on the bracket.

15. The brake cylinder according to claim 14, characterized in that: The piston is formed with a mounting groove, and the bracket is mounted in the mounting groove and has an interference fit with the mounting groove.

16. The brake cylinder according to claim 15, characterized in that: The outer peripheral wall of the bracket is provided with a plurality of protrusions which are interference fit with the inner wall of the mounting groove. The plurality of protrusions extend along the axial direction of the bracket and are arranged at intervals along the circumference of the bracket. An air groove which passes through the axial direction of the bracket is formed between adjacent protrusions.

17. The brake cylinder according to claim 14, characterized in that: 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-slip groove, and the bracket is provided with an anti-slip structure, which cooperates with the anti-slip groove to prevent the bracket from slipping out of the mounting groove.

18. The brake cylinder according to claim 17, characterized in that: The anti-slip structure comprises: A plurality of anti-slip claws are arranged at intervals along the circumference of the bracket, and weakened grooves are formed between adjacent anti-slip claws. The distance between the anti-slip claws relative to each other in the radial direction of the bracket gradually increases in the direction away from the bottom of the mounting groove.

19. The brake cylinder according to claim 15, characterized in that: The bracket is formed with an installation cavity, and the magnetic member is arranged in the installation cavity.

20. The brake cylinder according to claim 1, characterized in that The displacement signal generator is an integrated magnetic part.

21. The brake cylinder according to claim 1, characterized in that Also includes: A push rod is abutted against one side of the piston, and the push rod is isolated from the displacement signal generator by the piston.

22. The brake cylinder according to claim 1, characterized in that Also includes: A displacement signal receiver is disposed on the cylinder body and is used to receive the displacement information of the piston output by the displacement signal generator.

23. The brake cylinder according to claim 22, characterized in that The displacement signal receiver comprises: A receiving shell, wherein a first end of the receiving shell is disposed close to the displacement signal generator; A receiving chip, wherein the receiving chip is arranged at the first end; A connecting wire extends along the axial direction of the receiving shell, one end of the connecting wire is connected to the receiving chip, and the other end of the connecting wire extends out of the receiving shell.

24. The brake cylinder according to claim 23, characterized in that The first end of the receiving shell is provided with an assembly groove, the receiving chip is arranged at the groove bottom of the assembly groove, and the thickness of the receiving chip does not exceed the depth of the assembly groove.

25. The brake cylinder according to claim 23, characterized in that The receiving shell includes a first shell segment and a second shell segment, the first shell segment is connected to the second shell segment, and the first shell segment is closer to the displacement signal generator than the second shell segment; a receiving chip, wherein the receiving chip is disposed in the first shell segment; A connecting line, one end of which is connected to the receiving chip, and the connecting line extends in the second shell segment.

26. The brake cylinder according to claim 25, characterized in that The receiving shell also includes: a third shell segment, the third shell segment is connected to the second shell segment, the connecting line extends out of the third shell segment, and the extending direction of the third shell segment or the connecting line is perpendicular to the piston axis direction or the piston movement direction.

27. The brake cylinder according to claim 26, characterized in that The receiving shell is formed by buckling at least two sub-shells, and each of the sub-shells extends in the entire length direction of the receiving shell.

28. The brake cylinder according to claim 22, characterized in that The displacement signal receiver is arranged on the outer peripheral wall or one axial end of the cylinder body.

29. The brake cylinder according to claim 22, characterized in that: The cylinder body is formed with a first slide groove connected with the hydraulic chamber, one end of the displacement signal generator is arranged on the piston, the other end of the displacement signal generator is slidably arranged in the first slide groove, and the displacement signal receiver is located outside the first slide groove.

30. The brake cylinder according to claim 22, characterized in that A first slide groove communicating with the hydraulic chamber is formed at one end of the cylinder body, the displacement signal receiver is arranged at one end of the cylinder body, the displacement signal receiver is formed with a second slide groove, and the displacement signal generator can be slidably arranged in the first slide groove and the second slide groove.

31. The brake cylinder according to claim 30, characterized in that Also includes: A first sealing member is disposed between an end surface of one end of the cylinder body and an end surface of the displacement signal receiver.

32. The brake cylinder according to any one of claims 29 to 31, characterized in that: Also includes: A second sealing member is disposed between an inner peripheral wall of the first sliding groove and an outer peripheral wall of the displacement signal generator.

33. A braking system, characterized in that: include: The brake cylinder according to any one of claims 1 to 32.

34. A vehicle, characterized in that: include: The braking system of claim 33.

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