Braking device and braking system and vehicle having the same

Abstract

The application discloses a brake device and a vehicle with the brake system, and the brake device comprises a caliper body, the caliper body is provided with a first accommodating cavity with a first opening, a driving mechanism, the driving mechanism is arranged in the first accommodating cavity, one end of the driving mechanism is suitable for driving a brake pad to move, a first cover body, the other end of the driving mechanism is suitable for abutting with the first cover body, and a force sensor, the force sensor is arranged in the first cover body. According to the brake device of the embodiment of the application, the first cover body is fixed on the opening of the first accommodating cavity of the caliper body, the force sensor is arranged in the first cover body, the force sensor is used for monitoring the brake force output by the driving mechanism in real time, the position of the force sensor is limited by the first cover body, reliable fixation of the force sensor can be realized, and the monitoring precision and reliability of the force sensor can be improved.

Description

Technical Field

[0001] This invention relates to the field of vehicle braking technology, and more specifically, to a braking device and a braking system and vehicle having the same. Background Technology

[0002] Force sensors in related technologies are used to convert mechanical force into electrical signals. In related technologies, the force sensor of the braking device is set in the housing of the braking device. Because the force sensor needs to monitor mechanical force, it needs to be subjected to force for a long time. It is prone to displacement and shaking due to durability or vibration. Over time, this seriously affects the measurement accuracy and long-term stability of the sensor. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a braking device in which a first cover is fixedly disposed on the opening of the first receiving cavity of the clamp body, and a force sensor is disposed on the first cover. The force sensor is used to monitor the braking force output by the drive mechanism in real time. By using the first cover to limit the position of the force sensor, reliable fixation of the force sensor can be achieved, which facilitates the improvement of the monitoring accuracy and reliability of the force sensor.

[0004] The present invention also proposes a braking system having the aforementioned braking device.

[0005] The present invention also proposes a vehicle having the aforementioned braking device or braking system.

[0006] According to a first aspect of the present invention, a braking device includes: a clamp body having a first receiving cavity having a first open opening; a driving mechanism disposed in the first receiving cavity, one end of the driving mechanism being adapted to drive a brake pad to move; a first cover covering the first open opening, the other end of the driving mechanism being adapted to engage with the first cover; and a force sensor disposed in the first cover.

[0007] According to an embodiment of the braking device of the present invention, a first cover is fixedly disposed on the opening of the first receiving cavity of the clamp body, and a force sensor is disposed on the first cover. The force sensor is used to monitor the braking force output by the drive mechanism in real time. By using the first cover to limit the position of the force sensor, the force sensor can be reliably fixed, which facilitates the improvement of the monitoring accuracy and reliability of the force sensor.

[0008] In addition, the braking device according to the above embodiments of the present invention may also have the following additional technical features: According to some embodiments of the present invention, the force sensor is embedded in the first cover; and / or, the first cover has a connecting portion through which a fastener connects the first cover and the clamp body.

[0009] According to some alternative embodiments of the present invention, the force sensor includes an electrically connected strain gauge and a circuit board, the strain gauge being in contact with the first cover; the braking device further includes a controller that communicates with the circuit board.

[0010] According to some specific embodiments of the present invention, the first cover body has a first groove and a second groove on the side opposite to the driving mechanism, the strain gauge is disposed in the first groove, and the circuit board is disposed in the second groove.

[0011] In some embodiments, the second groove is a circular groove; and / or, the number of the first grooves is multiple, and the multiple first grooves are spaced apart along the circumference of the second groove.

[0012] According to some specific embodiments of the present invention, a mating bearing is provided between the first cover and the driving mechanism, and at least part of the projection of the strain gauge and the projection of the mating bearing coincide on a plane perpendicular to the thickness direction of the first cover.

[0013] According to some specific embodiments of the present invention, the first cover is provided with a contact protrusion, which engages with the mating bearing.

[0014] According to some specific embodiments of the present invention, the driving mechanism includes a rotating member and a moving member that are threaded together, the rotating member being adapted to drive the moving member to move, and the moving member being adapted to drive the brake pad to move.

[0015] In some embodiments, the mating bearing includes a first seat ring and a second seat ring that are rotatably fitted together, the first seat ring being fixedly connected to the rotating member, and the second seat ring being in a stop fit with the first cover.

[0016] According to some specific embodiments of the present invention, one of the rotating member and the first seat ring has a mating protrusion and the other has a mating hole, the mating protrusion being interference-fitted with the mating hole; and / or, the first cover body has an annular contact protrusion on the side facing the rotating member, the contact protrusion being in contact with the second seat ring.

[0017] According to some embodiments of the present invention, there are multiple first receiving cavities, each of which is provided with the driving mechanism, and the multiple driving mechanisms are adapted to drive the same brake pad to move.

[0018] According to some embodiments of the present invention, the braking device further includes a motor for driving the drive mechanism.

[0019] According to some optional embodiments of the present invention, the braking device further includes a deceleration assembly, the drive mechanism includes a threaded rotating member and a moving member, the rotating member is adapted to drive the moving member to move, and the motor drives the rotating member to rotate through the deceleration assembly; and / or, the clamp body is provided with a second receiving cavity having a second opening, and the motor is disposed in the second receiving cavity.

[0020] According to a second aspect of the present invention, a braking system is provided, the braking system comprising the braking device described in the first aspect of the present invention.

[0021] According to the braking system of the present invention, by utilizing the braking device described in the first aspect of the present invention, a first cover is fixedly disposed on the opening of the first receiving cavity of the caliper, and a force sensor is disposed on the first cover. The force sensor is used to monitor the braking force output by the drive mechanism in real time. By using the first cover to limit the position of the force sensor, the assembly process can be reduced, the possibility of the force sensor shaking can be reduced, and the accuracy and reliability of the force sensor in monitoring the vehicle braking force can be improved.

[0022] According to a third aspect of the present invention, a vehicle is provided, the vehicle including a braking device as described in a first aspect of the present invention or a braking system as described in a second aspect of the present invention.

[0023] According to an embodiment of the present invention, in a vehicle using a braking device described in an embodiment of the first aspect of the present invention or a braking system described in an embodiment of the second aspect of the present invention, a first cover is fixedly disposed on the opening of the first receiving cavity of the caliper, and a force sensor is disposed on the first cover. The force sensor is used to monitor the braking force output by the drive mechanism in real time. By using the first cover to limit the position of the force sensor, reliable fixation of the force sensor can be achieved, which facilitates the improvement of the monitoring accuracy and reliability of the force sensor.

[0024] Additional aspects and advantages of the invention 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 the invention. Attached Figure Description

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a structural cross-sectional schematic diagram of the braking device according to an embodiment of the present invention; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 This is an integrated schematic diagram of the force sensor and the first cover according to an embodiment of the present invention; Figure 4This is a cross-sectional view of the force sensor and the first cover according to an embodiment of the present invention; Figure 5 This is a top view of the force sensor and the first cover according to an embodiment of the present invention.

[0026] Reference numerals: 1. Braking device; 10. Clamping body; 11. First receiving cavity; 12. Second receiving cavity; 20. Brake pads; 30. Drive mechanism; 31. Rotating component; 311. Mating protrusion; 32. Moving component; 33. Piston; 41. First cover; 411. First groove; 412. Second groove; 413. Contact protrusion; 414. Connecting part; 42. Second cover; 50. Force sensor; 51. Strain gauge; 511. Wiring section; 52. Circuit board; 521. Outgoing wire section; 61. Controller; 62. Mating bearing; 621. First race; 622. Second race; 63. Angle sensor; 71. Motor; 711. Output shaft; 712. First mating gear; 72. Reduction gear; 73. Angular contact ball bearing; 74. Magnetic induction element; 75. Magnetic cap. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] The braking device 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings. The braking device 1 is used to brake the brake disc, specifically, when the brake disc rotates, the braking device 1 is used to decelerate and brake the brake disc.

[0029] like Figures 1-5 As shown, the braking device 1 according to an embodiment of the present invention includes a clamp body 10, a drive mechanism 30, a first cover body 41, and a force sensor 50.

[0030] The clamp body 10 is provided with a first receiving cavity 11 having a first open opening. The drive mechanism 30 is provided in the first receiving cavity 11. One end of the drive mechanism 30 is adapted to drive the brake pad 20 to move, so that the brake pad 20 is reciprocally disposed in the clamp body 10, so that the brake pad 20 can abut or separate from the brake disc.

[0031] Specifically, when braking the brake disc is required, the drive mechanism 30 can push the brake pads 20 towards the brake disc, so that the brake pads 20 abut against the brake disc. The friction between the brake pads 20 and the brake disc is used to slow down the brake disc, thereby achieving braking. When braking the brake disc is not required, the drive mechanism 30 can drive the brake pads 20 away from the brake disc, so that the brake pads 20 separate from the brake disc.

[0032] The first cover 41 is placed over the first opening. The first cover 41 is located on the side of the drive mechanism 30 away from the brake pad 20. The first cover 41 is used to close the opening of the first receiving cavity 11. On the one hand, it can provide a relatively closed working environment for the drive mechanism 30 in the first receiving cavity 11. On the other hand, it can limit the position of the drive mechanism 30 and prevent the drive mechanism 30 from detaching from the first receiving cavity 11.

[0033] The other end of the drive mechanism 30 is adapted to engage with the first cover 41. Specifically, when the drive mechanism 30 is not in motion, there is a gap between the drive mechanism 30 and the first cover 41, or the drive mechanism 30 is in contact with the first cover 41 but there is no force between them. When the drive mechanism 30 is in motion, the drive mechanism 30 engages with the first cover 41 and there is a force between them, so as to deform the first cover 41. The force sensor 50 is provided on the first cover 41 and is used to determine the braking force based on the amount of deformation of the first cover 41.

[0034] Understandably, when the drive mechanism 30 pushes the brake pad 20 into contact with the brake disc, while the drive mechanism 30 outputs braking force to the brake pad 20, it also exerts a reverse force on the first cover 41. When the reverse force of the drive mechanism 30 acts on the first cover 41, the first cover 41 deforms. This deformation is strain, i.e., unit deformation. The force sensor 50 can obtain the force on the first cover 41 based on the strain of the first cover 41, and thus infer the braking force output by the drive mechanism 30 to the brake pad 20, determine the magnitude of the braking force between the brake pad 20 and the brake disc, so as to compare it with the braking force applied by the vehicle driver, and then dynamically adjust the braking force between the brake pad 20 and the brake disc to meet the driver's expected braking force.

[0035] It should be noted that the first cover 41 is made of a linear elastic material. The material of the first cover 41 can be metal materials such as steel, aluminum, and titanium alloy, or it can be plastic or composite material. The deformation of the first cover 41 under the force of the driving mechanism 30 is a fully recoverable elastic deformation. At this time, the deformation of the first cover 41 is a small elastic strain within the "linear elastic stage". The "linear elastic stage" refers to the stage in which the deformation of the material after being subjected to force is strictly proportional to the force, and when the external force is removed, the deformation can completely disappear and return to its original state.

[0036] In some embodiments, the force sensor is usually placed inside the clamp body in the prior art. Due to assembly reasons, there is a gap between the force sensor and the clamp body. After each assembly of the force sensor, a second calibration is required. However, the force sensor is still prone to slight displacement after being subjected to force, which leads to reduced detection accuracy and poor reliability after durability or vibration.

[0037] Specifically, when the clamp body is subjected to vibration, the gap between the force sensor and the clamp body can easily cause the position of the force sensor to shift, which in turn leads to a decrease in the monitoring accuracy of the force sensor. Even if the force sensor does not shift, the gap between the force sensor and the clamp body will still affect the detection accuracy of the force sensor.

[0038] The present invention places the force sensor 50 on the first cover 41 and uses the first cover 41 to limit the position of the force sensor 50, so that the force sensor 50 can obtain the braking force output by the drive mechanism 30 according to the deformation of the first cover 41, and thus determine the braking force between the brake pad 20 and the brake disc.

[0039] This eliminates the assembly gap present in the force sensor 50 in the prior art, thereby improving the offset problem of the force sensor 50 caused by the assembly gap under extreme environments such as durability, vibration and high temperature, and improving the monitoring accuracy and reliability of the force sensor 50 for braking force.

[0040] Specifically, the force sensor 50 can monitor the braking force between the brake pad 20 and the brake disc in real time by detecting the deformation of the first cover 41. Since the first cover 41 is fixed to the clamp body 10, the first cover 41 itself is not easy to shake. By placing the force sensor 50 on the first cover 41 and using the first cover 41 to limit the position of the force sensor 50, the possibility of the force sensor 50 vibrating or shaking under force can be reduced, which is conducive to improving the monitoring accuracy and reliability of the force sensor 50.

[0041] Furthermore, after the force sensor 50 is placed on the first cover 41, when assembling the braking device 1, it is only necessary to calibrate the assembly accuracy of the drive mechanism 30 and the first cover 41, without having to calibrate the assembly accuracy of the first cover 41 and the force sensor 50 again. This can save assembly steps, reduce the risk of assembly interference, and simplify the assembly process.

[0042] According to the braking device 1 of the present invention, a first cover 41 is fixedly covered at the opening of the first receiving cavity 11 of the clamp body 10, and a force sensor 50 is disposed on the first cover 41. The force sensor 50 is used to monitor the braking force output by the drive mechanism 30 in real time. By using the first cover 41 to limit the position of the force sensor 50, the force sensor 50 can be reliably fixed, which facilitates the improvement of the monitoring accuracy and reliability of the force sensor 50.

[0043] The braking device 1 according to a specific embodiment of the present invention is described below with reference to the accompanying drawings.

[0044] In some specific embodiments of the present invention, such as Figures 1-5 As shown, the braking device 1 according to an embodiment of the present invention includes a clamp body 10, a drive mechanism 30, a first cover body 41, and a force sensor 50.

[0045] In some embodiments of the present invention, such as Figures 3-5 As shown, the force sensor 50 is embedded in the first cover 41, so that the space inside the first cover 41 can accommodate the force sensor 50, and the force sensor 50 and the first cover 41 are integrated into one unit, which makes it easier to reduce the size of the force sensor 50 and the first cover 41, and can adapt to the compact structure of the clamp body 10, thereby facilitating the miniaturization design of the braking device 1. At the same time, it eliminates the cost of separately manufacturing the shell of the force sensor 50, saving the cost of separately manufacturing two parts.

[0046] Specifically, embedding the force sensor 50 within the first cover 41 can save the size of the force sensor 50 and the first cover 41 in terms of the thickness of the first cover 41, thereby reducing the space occupied by the force sensor 50 and the first cover 41 in the moving direction of the brake pad 20, which makes it easier to reduce the size of the braking device 1 in the moving direction of the brake pad 20.

[0047] In some embodiments of the present invention, such as Figure 5 As shown, the first cover 41 has a connecting part 414. The fastener connects the first cover 41 and the clamp 10 through the connecting part 414 to stably fix the first cover 41 on the clamp 10, so that the first cover 41 can remain stable when it is subjected to the force of the driving mechanism 30.

[0048] Furthermore, since the force sensor 50 is located on the first cover 41, ensuring the stability of the first cover 41 can reduce the possibility of the force sensor 50 shaking, thereby improving the detection accuracy and reliability of the force sensor 50.

[0049] In some embodiments, the connecting part 414 is a connecting lug, and the fastener is adapted to pass through the connecting lug and be fixedly connected to the clamp body to achieve the fixation of the first cover 41 and the clamp body 10.

[0050] In some embodiments, such as Figure 5 As shown, the first cover 41 is a circular cover and includes multiple connecting parts 414. The multiple connecting parts 414 are arranged at intervals along the circumference of the first cover 41. Multiple fasteners are fixed to the clamp body 10 through the multiple connecting parts 414 to stably fix the first cover 41 on the clamp body 10.

[0051] In some embodiments of the present invention, such as Figure 1 , Figure 5 As shown, the force sensor 50 includes a strain gauge 51 and a circuit board 52 that are electrically connected. The strain gauge 51 is in contact with the first cover 41 and is adapted to deform with the first cover 41 so as to obtain the force signal of the first cover 41 based on the deformation of the first cover 41. The circuit board 52 is used to output the force signal detected by the strain gauge 51.

[0052] In some embodiments, strain gauge 51 and circuit board 52 are embedded in first cover 41 to integrate force sensor 50 and first cover 41 into one unit.

[0053] The braking device 1 also includes a controller 61, which communicates with the circuit board 52. The controller 61 is used to analyze the force between the drive mechanism 30 and the first cover 41 based on the force signal obtained from the strain gauge 51, and then determine the braking force output by the drive mechanism 30 and the braking force between the brake pad 20 and the brake disc.

[0054] In some embodiments, the controller 61 is fixed to the clamp body 10 to integrate the controller 61 and the clamp body 10 into one unit.

[0055] Specifically, when the drive mechanism 30 applies a force to the first cover 41, the first cover 41 deforms under the force. At this time, the strain gauge 51 installed on the first cover 41 also strains. The resistance value of the strain gauge 51 changes with the strain. The law of the change of the resistance value of the strain gauge 51 is ΔR / R=K·ε, where K is the sensitivity coefficient and ε is the strain.

[0056] The strain gauge 51 is internally connected to a Wheatstone bridge circuit. When the resistance value of the strain gauge 51 changes, the bridge becomes unbalanced. The strain gauge 51 outputs a voltage signal that is proportional to the force on the first cover 41, i.e., the force signal on the first cover 41. At this time, the voltage signal is in the millivolt range. This voltage signal can be transmitted to the controller 61 through the circuit board 52. The controller 61 amplifies and demodulates the signal into the required signal, and finally converts it into a force value, thereby obtaining the braking force output by the drive mechanism 30 and determining the braking force between the brake pad 20 and the brake disc.

[0057] It is understandable that the deformation of strain gauge 51 and the first cover 41 is at the micrometer level. Although it cannot be observed with the naked eye, the voltage signal output by strain gauge 51 can be demodulated into the required signal after being amplified by the circuit, and finally converted into the force on the first cover 41.

[0058] In some embodiments, such as Figure 5 As shown, the strain gauge 51 includes a wiring section 511, which is electrically connected to the circuit board 52 by soldering. The circuit board 52 has a lead-out section 521, which is used to electrically connect to the controller 61 to transmit the force signal detected by the strain gauge 51 to the controller 61. The controller 61 analyzes the force signal to obtain the force between the drive mechanism 30 and the first cover 41, and then determines the braking force output by the drive mechanism 30 and the braking force between the brake pad 20 and the brake disc.

[0059] In some specific embodiments of the present invention, such as Figure 5 As shown, the first cover 41 has a first groove 411 and a second groove 412 on the side opposite to the drive mechanism 30. The strain gauge 51 is disposed in the first groove 411 and the circuit board 52 is disposed in the second groove 412, so that the strain gauge 51 and the circuit board 52 are embedded in the first cover 41.

[0060] In this way, while the position of the force sensor 50 is defined by the first cover 41, the force sensor 50 can also be protected, reducing the possibility of other components colliding with the strain gauge 51 and the circuit board 52. At the same time, it is also convenient to reduce the volume of the force sensor 50 and the first cover 41, reduce the space occupied by the force sensor 50 and the first cover 41, and facilitate the miniaturization design of the braking device 1.

[0061] In some embodiments, the force sensor 50 is fixed to the first cover 41, and the force sensor 50 and the first cover 41 are integrally injection molded parts. Specifically, the strain gauge 51 and the circuit board 52 are placed in the mold, and then injection molding liquid is poured into the mold to integrally injection mold the strain gauge 51 and the circuit board 52 with the first cover 41.

[0062] In some alternative embodiments of the present invention, such as Figure 5 As shown, the second groove 412 is a circular groove.

[0063] In some optional embodiments of the present invention, there are multiple first grooves 411, which are spaced apart circumferentially along the second groove 412. Correspondingly, there are also multiple strain gauges 51, which are disposed one-to-one with each of the multiple first grooves 411.

[0064] When the second groove 412 is a circular groove, multiple first grooves 411 are arranged at intervals along the circumference of the second groove 412, so that the connection distance between each strain gauge 51 and the circuit board 52 is the same, so that the wiring distance between the strain gauge 51 and the circuit board 52 is the same, so that the length of multiple wirings is the same, thereby facilitating the versatility of the parts in the braking device 1.

[0065] Specifically, when the first cover 41 deforms under stress, multiple independent strain gauges 51 will strain respectively and convert the strain into a change in resistance value, which is then converted into a voltage signal through the Wheatstone bridge principle. In this way, when the point of application of the force on the first cover 41 shifts, the voltage output signal of the strain gauges 51 will not be affected, thereby facilitating the force sensor 50 to monitor and provide feedback on the magnitude of the braking force between the brake pad 20 and the brake disc in a timely and accurate manner, and improving the monitoring accuracy of the braking force by the force sensor 50.

[0066] In some embodiments of the present invention, such as Figure 2 As shown, a mating bearing 62 is provided between the first cover 41 and the drive mechanism 30. The mating bearing 62 is used to realize the movement separation of the first cover 41 and the drive mechanism 30 so that the first cover 41 remains in a fixed position when the drive mechanism 30 moves.

[0067] In this configuration, on a plane perpendicular to the thickness direction of the first cover 41, at least a portion of the projection of the strain gauge 51 and the projection of the mating bearing 62 coincide. The drive mechanism 30 transmits force to the first cover 41 through the mating bearing 62, causing at least a portion of the projection of the strain gauge 51 and the projection of the mating bearing 62 to coincide. This allows the strain gauge 51 to accurately and promptly detect the strain of the first cover 41 when the mating bearing 62 transmits force to the first cover 41, causing the first cover 41 to deform. This, in turn, improves the detection accuracy of the force sensor 50.

[0068] In some alternative embodiments of the present invention, such as Figure 2 , Figure 4 As shown, the first cover 41 is provided with a contact protrusion 413, which is in contact with the mating bearing 62.

[0069] Specifically, after the force sensor 50 is placed on the first cover 41, when assembling the braking device 1, it is only necessary to calibrate the assembly accuracy of the contact protrusion 413 and the mating bearing 62. There is no need to calibrate the assembly accuracy of the first cover 41 and the force sensor 50 again, which can save assembly steps, reduce the risk of assembly interference, and simplify the assembly process.

[0070] In some embodiments, the contact protrusion 413 is annular, and the annular contact protrusion 413 is in a stop-fitting engagement with the mating bearing 62 so that the force exerted by the first cover 41 on it is transmitted to the contact protrusion 413 by the mating bearing 62. The contact protrusion 413 deforms after being subjected to force, and the strain gauge 51 is strained along with the deformation of the first cover 41, so that the resistance value of the strain gauge 51 changes with the strain. The strain gauge 51 is connected to a Wheatstone bridge circuit. When the resistance value of the strain gauge 51 changes, the bridge becomes unbalanced and outputs a voltage signal proportional to the force exerted on the first cover 41, thereby obtaining the force exerted by the drive mechanism 30 on the first cover 41, determining the braking force output by the drive mechanism 30, and determining the braking force between the brake pad 20 and the brake disc.

[0071] In some alternative embodiments of the present invention, such as Figure 5 As shown, there are multiple strain gauges 51, which are spaced apart circumferentially along the mating bearing 62. When the first cover 41 is deformed by force, the multiple independent strain gauges 51 will strain respectively and convert the strain into a change in resistance value. Then, through the Wheatstone bridge principle, it is converted into a voltage signal. In this way, when the point of application of the force on the first cover 41 is shifted, the voltage output signal of the strain gauge 51 will not be affected. This makes it easier for the force sensor 50 to monitor and feedback the magnitude of the braking force between the brake pad 20 and the brake disc in a timely and accurate manner, thereby improving the monitoring accuracy of the braking force by the force sensor 50.

[0072] In some embodiments, the first cover 41 is provided with a contact protrusion 413, which is in a stop-fitting relationship with the mating bearing 62. The contact protrusion 413 is annular, and a plurality of strain gauges 51 are evenly spaced along the circumference of the contact protrusion 413.

[0073] In some embodiments, such as Figure 5 The force sensor 50 includes three strain gauges 51, which are arranged at 120° intervals on the first cover 41; or the force sensor 50 may include four, five or more strain gauges 51, without much limitation here.

[0074] In some alternative embodiments of the present invention, such as Figure 1 , Figure 2 As shown, the drive mechanism 30 includes a rotating part 31 and a moving part 32 that are threaded together. The rotating part 31 is adapted to drive the moving part 32 to move, and the moving part 32 is adapted to drive the brake pad 20 to move, so that when the moving part 32 moves, it can drive the brake pad 20 to move, thereby realizing the reciprocating movement of the brake pad 20, so that the brake pad 20 contacts or separates from the brake disc.

[0075] In some specific embodiments of the present invention, such as Figure 1 , Figure 2As shown, the mating bearing 62 includes a first seat ring 621 and a second seat ring 622 that are rotatably mated. The first seat ring 621 is fixedly connected to the rotating member 31, and the second seat ring 622 is abutted against the first cover 41. The mating bearing 62 is used to realize the rotational separation of the rotating member 31 and the first cover 41. When the rotating member 31 rotates, the rotating member 31 drives the first seat ring 621 to rotate relative to the second seat ring 622 and the first cover 41, thereby enabling the rotating member 31 to rotate smoothly relative to the first cover 41. The force can be transmitted to the first cover 41 through the mating bearing 62, thus avoiding direct contact between the rotating member 31 and the first cover 41 and preventing wear between them.

[0076] Specifically, the rotating component 31 and the moving component 32 are threaded together. The rotating component 31 is formed as a lead screw, and the moving component 32 is formed as a nut. When the rotating component 31 rotates, it drives the moving component 32 to move. The moving component 32 drives the brake pad 20 to move and applies a force towards the brake disc, thus achieving contact between the brake pad 20 and the brake disc. The forces are mutual; while the moving component 32 applies a force to the brake pad 20, it also applies a reaction force to the rotating component 31. The rotating component 31 transmits the force to the first cover 41 through the bearing 62. The force sensor 50 on the first cover 41 then determines the force acting on the first cover 41 based on its deformation, thus determining the braking force between the brake pad 20 and the brake disc.

[0077] In some embodiments, the mating bearing 62 further includes a rolling portion located between the first bearing ring 621 and the second bearing ring 622. The rolling portion is adapted to roll to separate the movements of the first bearing ring 621 and the second bearing ring 622, thereby allowing the first bearing ring 621 and the second bearing ring 622 to rotate relative to each other. Specifically, the rolling portion makes the friction between the first bearing ring 621 and the second bearing ring 622 rolling friction, which helps to reduce the frictional force between the first bearing ring 621 and the second bearing ring 622.

[0078] The rolling elements include, but are not limited to, various shapes such as spherical balls and elongated needle rollers. The rolling elements commonly used in bearings, conventional variations of rolling elements, and equivalent designs are all within the scope of this protection.

[0079] Furthermore, the mating bearing 62 between the first cover 41 and the rotating part 31 is a thrust needle roller bearing.

[0080] In some examples, the rolling elements of the thrust needle roller bearing are elongated cylindrical needle rollers. The rolling elements are adapted to rotate about the axis of the cylinder, and the contact between the first race 621 and the cylindrical needle roller is a linear contact, which increases the effective contact length between the first race 621 and the rolling elements, facilitating the optimization of the load-carrying capacity of the thrust needle roller bearing.

[0081] In some embodiments, the movable member 32 slides against the inner wall of the first receiving cavity 11 to guide and support the movement of the movable member 32, thereby enabling the movable member 32 to apply force to the brake pad 20, so that the brake pad 20 can brake the brake disc.

[0082] In some embodiments, such as Figure 1 As shown, a piston 33 is provided between the moving part 32 and the brake pad 20. The moving part 32 drives the brake pad 20 to move through the piston 33, so as to reduce the wear between the moving part 32 and the brake pad 20 when the moving part 32 applies force to the brake pad 20, thereby improving the service life of the moving part 32 and the brake pad 20.

[0083] In some embodiments, such as Figure 2 As shown, an angular contact ball bearing 73 is provided between the rotating component 31 and the inner wall of the first receiving cavity 11. The angular contact ball bearing 73 is used to support the rotation of the rotating component 31. Specifically, the angular contact ball bearing 73 is sleeved on the rotating component 31, the inner ring of the angular contact ball bearing 73 is fixed to the rotating component 31, and the outer ring of the angular contact ball bearing 73 is fixed to the inner wall of the first receiving cavity 11.

[0084] In some specific embodiments of the present invention, such as Figure 2 As shown, one of the rotating member 31 and the first seat ring 621 has a mating protrusion 311 and the other has a mating hole. The mating protrusion 311 and the mating hole are interference-fitted to achieve a fixed fit between the first seat ring 621 and the rotating member 31, thereby allowing the rotating member 31 to rotate smoothly relative to the first cover 41.

[0085] Furthermore, such as Figure 2 As shown, the rotating member 31 has a mating protrusion 311, and the first seat ring 621 has a mating hole.

[0086] In some specific embodiments of the present invention, such as Figure 2 , Figure 4 As shown, the first cover 41 has an annular contact protrusion 413 on the side facing the rotating member 31. The contact protrusion 413 contacts and engages with the second seat ring 622 so that when the rotating member 31 rotates, the force can be transmitted to the contact protrusion 413 through the engaging bearing 62. Then, the force sensor 50 monitors the braking force between the brake pad 20 and the brake disc based on the deformation of the first cover 41.

[0087] In some embodiments, the force sensor 50 and the first cover 41 are integrated into one unit. The first cover 41 is fixed to the clamp body 10 by bolts. The drive mechanism 30 transmits the braking force to the thrust needle bearing. The thrust needle bearing is in direct contact with the contact protrusion 413, which causes the first cover 41 to deform. The force sensor 50 can monitor the braking force of the drive mechanism 30 in real time according to the degree of deformation of the first cover 41.

[0088] In some embodiments of the present invention, such as Figure 1 As shown, there are multiple first receiving cavities 11, and each first receiving cavity 11 is provided with a drive mechanism 30. Multiple drive mechanisms 30 are adapted to drive the same brake pad 20 to move, so as to use multiple drive mechanisms 30 to push the brake pad 20 to move back and forth, thereby increasing the braking force of the brake pad 20 on the brake disc.

[0089] Of course, each first receiving cavity 11 is provided with a first cover 41, and each first cover 41 is provided with a force sensor 50, so as to use multiple force sensors 50 to monitor the forces acting on multiple first covers 41 respectively, and thus determine the braking force between the brake pad 20 and the brake disc.

[0090] In some embodiments, such as Figure 1 As shown, the braking device 1 includes two brake pads 20, each brake pad 20 is provided with multiple drive mechanisms 30, the brake disc is located between the two brake pads 20, and the two brake pads 20 are adapted to move simultaneously toward the brake disc or away from the brake disc, so as to achieve contact or separation between the two brake pads 20 and the brake disc.

[0091] Specifically, when the brake disc needs to be braked, the two brake pads 20 are adapted to clamp the brake disc to engage with it through friction, thereby fully braking the brake disc.

[0092] In some embodiments of the present invention, such as Figure 1 As shown, the braking device 1 also includes a motor 71, which is used to drive the drive mechanism 30 to move. When the drive mechanism 30 is in motion, it is adapted to drive the brake pad 20 to reciprocate, thereby realizing the contact or separation of the brake pad 20 and the brake disc.

[0093] Specifically, the drive mechanism 30 includes a rotating part 31 and a moving part 32 that are threaded together. The motor 71 is adapted to drive the rotating part 31 to rotate, so that the rotating part 31 drives the moving part 32 to move, thereby driving the brake pad 20 to reciprocate.

[0094] In some embodiments, each brake pad 20 cooperates with a plurality of drive mechanisms 30. A motor 71 is used to drive the plurality of drive mechanisms 30 cooperating with the same brake pad 20 to move. Specifically, a motor 71 is adapted to drive the rotating member 31 of the plurality of drive mechanisms 30 cooperating with the same brake pad 20 to rotate, thereby driving the plurality of moving members 32 to move together, so as to drive the brake pad 20 to move by the plurality of drive mechanisms 30, thereby realizing the contact or separation of the brake pad 20 and the brake disc.

[0095] In some examples, the braking device 1 includes two brake pads 20, two motors 71 and four drive mechanisms 30. One motor 71 drives the rotating parts 31 of the two drive mechanisms 30 to rotate, which in turn pushes one brake pad 20 to move.

[0096] In some specific embodiments of the present invention, such as Figure 1 As shown, the braking device 1 also includes a reduction assembly. The drive mechanism 30 includes a rotating member 31 and a moving member 32. The rotating member 31 is adapted to drive the moving member 32 to move. The motor 71 drives the rotating member 31 to rotate through the reduction assembly. The reduction assembly is used to reduce the speed and increase the torque of the rotational force output by the motor 71, thereby increasing the torque on the rotating member 31 and increasing the force exerted by the moving member 32 on the brake pad 20, so as to increase the braking force between the brake pad 20 and the brake disc.

[0097] In some embodiments, the braking device 1 includes two brake pads 20, two reduction gears, two motors 71 and four drive mechanisms 30. One motor 71 drives the rotating parts 31 of the two drive mechanisms 30 to rotate through a reduction gear, and then the two drive mechanisms 30 push one brake pad 20 to move.

[0098] In some embodiments, such as Figure 1 As shown, each brake pad 20 is provided with two drive mechanisms 30. The reduction assembly includes at least two reduction gears 72. The output shaft 711 of the motor 71 is fitted with a first mating gear 712, and the rotating part 31 of the drive mechanism 30 is fitted with a second mating gear. Both reduction gears 72 mesh with the first mating gear 712, and the two reduction gears 72 mesh with the two second mating gears respectively. When the motor 71 rotates, the motor 71 can drive the two rotating parts 31 to rotate together through the reduction assembly, thereby driving the two moving parts 32 to move together, so as to simultaneously use the two drive mechanisms 30 to push the brake pad 20 to move.

[0099] In some embodiments, such as Figure 1As shown, the braking device 1 also includes a controller 61, which is fixed to the caliper body 10. The controller 61 is located on the side of the motor 71 facing away from the brake pad 20. An angle sensor 63 is provided on the side of the controller 61 facing the motor 71. A magnetic induction element 74 is provided on the output shaft 711 of the motor 71. The angle sensor 63 is coupled to the magnetic induction element 74 to monitor the rotational speed of the motor 71.

[0100] Furthermore, the output shaft 711 is fitted with a magnetic cap 75, and the magnetic sensing element 74 is embedded in the magnetic cap 75. The magnetic cap 75 is located on the side of the first mating gear 712 facing the controller 61. The magnetic cap 75 is used to limit the position of the first mating gear 712 and prevent the first mating gear 712 from dislodging from the output shaft 711.

[0101] In some specific embodiments of the present invention, such as Figure 1 As shown, the clamp body 10 is provided with a second receiving cavity 12 having a second open opening, and the motor 71 is provided in the second receiving cavity 12 to integrate the motor 71 and the clamp body 10 into one piece. In this way, the position of the motor 71 can be limited by the clamp body 10, while improving the utilization rate of space.

[0102] Furthermore, the braking device 1 also includes a second cover 42, which covers the second opening. The second cover 42 has a clearance hole, through which the output shaft 711 of the motor 71 extends. The second cover 42 is used to close the second opening, which on the one hand provides a relatively closed working environment for the motor 71 in the second receiving cavity 12, and on the other hand limits the position of the motor 71 to prevent the motor 71 from detaching from the second receiving cavity 12.

[0103] The output shaft 711 of the motor 71 extends out of the clearance hole to cooperate with the reduction assembly and drive the rotating part 31 of the drive mechanism 30 to rotate.

[0104] Furthermore, the magnetic sensing element 74 is fixed to the portion of the output shaft 711 that extends out of the second receiving cavity 12.

[0105] The braking system according to an embodiment of the present invention is described below. The braking system according to an embodiment of the present invention includes a braking device 1 according to the above embodiment of the present invention.

[0106] According to the braking system of the present invention, by using the braking device 1 of the above embodiment of the present invention, a first cover 41 is fixedly covered on the opening of the first receiving cavity 11 of the clamp body 10, and a force sensor 50 is disposed on the first cover 41. The force sensor 50 is used to monitor the braking force output by the drive mechanism 30 in real time. By using the first cover 41 to limit the position of the force sensor 50, the force sensor 50 can be reliably fixed, which facilitates the improvement of the monitoring accuracy and reliability of the force sensor 50.

[0107] The following describes a vehicle according to an embodiment of the present invention. The vehicle according to an embodiment of the present invention includes a braking device 1 or braking system according to the above embodiments of the present invention, capable of monitoring the braking force output by the drive mechanism 30 in real time, comparing it with the braking force applied by the vehicle driver, and then dynamically adjusting the braking force between the brake pads 20 and the brake disc to meet the driver's expected braking force.

[0108] According to an embodiment of the present invention, in a vehicle using a braking device 1 or braking system according to the above embodiment of the present invention, a first cover 41 is fixedly disposed on the opening of the first receiving cavity 11 of the clamp body 10, and a force sensor 50 is disposed on the first cover 41. The force sensor 50 is used to monitor the braking force output by the drive mechanism 30 in real time. By using the first cover 41 to limit the position of the force sensor 50, the force sensor 50 can be reliably fixed, which facilitates the improvement of the monitoring accuracy and reliability of the force sensor 50.

[0109] In some embodiments, the vehicle may be a pure electric vehicle or a hybrid vehicle; no further restrictions are imposed here.

[0110] Other configurations and operations of the vehicle according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0111] In the description of this invention, 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," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. In the description of this invention, "above" or "below" a second feature may include direct contact between the first and second features, or it may include contact between the first and second features not being in direct contact but through another feature between them.

[0112] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0113] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0114] 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., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0115] Although embodiments of the invention 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 the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A braking device, characterized in that, The braking device (1) is used to brake the brake disc, and the braking device (1) includes: The clamp body (10) is provided with a first receiving cavity (11) having a first open opening; A drive mechanism (30) is provided in the first receiving cavity (11), and one end of the drive mechanism (30) is adapted to drive the brake pad (20) to move; The first cover (41) is provided on the first opening, and the other end of the drive mechanism (30) is adapted to engage with the first cover (41) for abutment. Force sensor (50) is disposed on the first cover (41).

2. The braking device according to claim 1, characterized in that, The force sensor (50) is embedded in the first cover (41); and / or, The first cover (41) has a connecting part (414), and fasteners connect the first cover (41) and the clamp (10) through the connecting part (414).

3. The braking device according to claim 1, characterized in that, The force sensor (50) includes an electrically connected strain gauge (51) and a circuit board (52), wherein the strain gauge (51) is in contact with the first cover (41); The braking device (1) also includes a controller (61) that communicates with the circuit board (52).

4. The braking device according to claim 3, characterized in that, The first cover (41) has a first groove (411) and a second groove (412) on the side facing away from the drive mechanism (30). The strain gauge (51) is located in the first groove (411) and the circuit board (52) is located in the second groove (412).

5. The braking device according to claim 4, characterized in that, The second groove (412) is a circular groove; and / or, the number of the first grooves (411) is multiple, and the multiple first grooves (411) are arranged at intervals along the circumference of the second groove (412).

6. The braking device according to claim 3, characterized in that, A mating bearing (62) is provided between the first cover (41) and the drive mechanism (30). On a plane perpendicular to the thickness direction of the first cover (41), at least part of the projection of the strain gauge (51) and the projection of the mating bearing (62) overlap.

7. The braking device according to claim 6, characterized in that, The first cover (41) is provided with a contact protrusion (413), which is in a stop-fitting engagement with the mating bearing (62).

8. The braking device according to claim 6, characterized in that, The drive mechanism (30) includes a rotating part (31) and a moving part (32) that are threaded together. The rotating part (31) is adapted to drive the moving part (32) to move, and the moving part (32) is adapted to drive the brake pad (20) to move.

9. The braking device according to claim 8, characterized in that, The mating bearing (62) includes a first race (621) and a second race (622) that are rotatably mated. The first seat ring (621) is fixedly connected to the rotating member (31), and the second seat ring (622) is in a stop-fitting engagement with the first cover (41).

10. The braking device according to claim 9, characterized in that, One of the rotating member (31) and the first seat ring (621) has a mating protrusion (311), and the other has a mating hole, wherein the mating protrusion (311) is interference-fitted with the mating hole; and / or, The first cover (41) has an annular contact protrusion (413) on the side facing the rotating member (31), and the contact protrusion (413) engages with the second seat ring (622).

11. The braking device according to any one of claims 1-10, characterized in that, There are multiple first receiving cavities (11), and each first receiving cavity (11) is provided with the driving mechanism (30). The multiple driving mechanisms (30) are adapted to drive the same brake pad (20) to move.

12. The braking device according to any one of claims 1-10, characterized in that, The braking device (1) also includes a motor (71) for driving the drive mechanism (30) to move.

13. The braking device according to claim 12, characterized in that, It also includes a reduction gear assembly, the drive mechanism (30) comprising a threaded rotating member (31) and a moving member (32), the rotating member (31) being adapted to drive the moving member (32) to move, and the motor (71) driving the rotating member (31) to rotate via the reduction gear assembly; and / or, The clamp (10) is provided with a second receiving cavity (12) having a second opening, and the motor (71) is located in the second receiving cavity (12).

14. A braking system, characterized in that, The braking device (1) includes any one of claims 1-13.

15. A vehicle, characterized in that, The braking device (1) includes any one of claims 1-13 or the braking system includes the one described in claim 14.

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