Brake motor and electric vehicle

Abstract

This invention provides a brake motor, comprising a shaft, a stator, a rotor, and a braking mechanism. The stator is fixedly mounted on the shaft. The rotor is rotatably mounted on the shaft and arranged around the outside of the stator. The braking mechanism includes an electrically controlled telescopic assembly, a control assembly, and a brake component. The electrically controlled telescopic assembly is mounted on the shaft. The control assembly is rotatably mounted on the shaft. The brake component is mounted on the control assembly. The telescopic rod of the electrically controlled telescopic assembly is corresponding to the control assembly to provide driving force to rotate the control assembly, causing the control assembly to move axially, thereby engaging or disengaging the brake component from the rotor. This invention also provides an electric vehicle. Compared with the prior art, the brake motor and electric vehicle provided by this invention provide smoother and more stable braking and unlocking, while also ensuring better unlocking success.

Description

Technical Field

[0001] This invention relates to the field of electric motor braking technology, and more particularly to a brake motor and an electric vehicle. Background Technology

[0002] An electric motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its main function is to generate driving torque, serving as a power source for electrical appliances or various machines.

[0003] As a type of motor, the brake motor has an additional braking mechanism installed on it. The brake components in the braking mechanism can lock the motor rotor, thereby preventing the motor rotor from rotating normally and thus braking the motor.

[0004] Existing braking mechanisms typically include an electronically controlled telescopic component and a brake component. During control, a control signal is applied to the electronically controlled telescopic component, causing its telescopic rod to extend or retract, thereby moving the brake component and engaging or disengaging it from the motor rotor to brake or unlock the motor. Using an electronically controlled telescopic component to move the brake component allows for faster braking and unlocking.

[0005] However, in existing braking mechanisms, the linear movement of the electrically controlled telescopic component directly drives the brake component to move linearly, thus achieving braking and unlocking of the motor. The braking and unlocking process is not smooth enough, and when there is a load on the motor rotor and resistance exists, unlocking becomes difficult, or even impossible, affecting the normal operation of the motor. Summary of the Invention

[0006] In existing brake motors, the braking and unlocking of the motor is achieved by directly moving the brake component linearly through the linear movement of an electronically controlled telescopic component. However, this braking and unlocking process is not smooth and stable enough, and sometimes, resistance at the motor rotor can prevent successful unlocking, affecting the normal operation of the motor. This invention provides a brake motor with a control component positioned between the electronically controlled telescopic component and the brake component. The telescopic rod of the electronically controlled telescopic component drives the control component to rotate, and the control component converts this rotational motion into linear motion, thereby causing the brake component to move linearly and achieving braking and unlocking of the motor. This makes the braking and unlocking process smoother and more stable, ensuring successful unlocking of the motor and better guaranteeing its normal operation.

[0007] A brake motor, comprising a shaft, a stator, a rotor, and a braking mechanism;

[0008] The stator is fixedly mounted on the shaft;

[0009] The rotor is rotatably mounted on the shaft, and the rotor is arranged around the outside of the stator;

[0010] The braking mechanism includes an electronically controlled telescopic assembly, a control assembly, and a brake component;

[0011] The electrically controlled telescopic assembly is mounted on the shaft;

[0012] The control component is rotatably and movable on the shaft;

[0013] The braking component is mounted on the control assembly;

[0014] The telescopic rod of the electronically controlled telescopic assembly is configured to correspond to the control assembly, so as to provide driving force to rotate the control assembly and move the control assembly axially, thereby driving the brake to engage or disengage from the rotor.

[0015] Preferably, the control component includes a transmission component and a control component;

[0016] The transmission component is rotatably and movablely mounted on the shaft, and the transmission component is configured to correspond to the telescopic rod of the electrically controlled telescopic assembly;

[0017] The control component is connected to the transmission component, and the control component can move axially under the drive of the transmission component;

[0018] The brake component is mounted on the control component.

[0019] Preferably, a thrust bearing is provided between the transmission component and the control component along the axial direction.

[0020] Preferably, the braking mechanism further includes a frame;

[0021] The frame is mounted on the shaft;

[0022] The electrically controlled telescopic assembly is installed on the frame.

[0023] Preferably, a ball bearing is provided between the transmission component and the frame, the frame is provided with a first ball bearing groove that partially accommodates the ball bearing, and the transmission component is provided with a second ball bearing groove that partially accommodates the ball bearing. The first ball bearing groove and / or the second ball bearing groove extend along the rotation direction of the transmission component, and the depth of the first ball bearing groove and / or the second ball bearing groove increases or decreases along the rotation direction of the transmission component.

[0024] Preferably, the control component further includes a main control elastic element;

[0025] The main control elastic element is connected to the frame and the control element respectively, so as to apply a driving force to the control element and make the brake element engage with the rotor.

[0026] Preferably, the control component further includes a balancing elastic element;

[0027] The balancing elastic element connects the frame and the transmission element respectively to apply assistance to the control element in order to balance part of the driving force.

[0028] Preferably, the electrically controlled telescopic assembly includes an electromagnet mounting base, a first electromagnet, and a second electromagnet;

[0029] The electromagnet mounting base is mounted on the shaft;

[0030] The first electromagnet is mounted on the electromagnet mounting base, and the telescopic rod of the first electromagnet is set corresponding to the control component to provide the driving force and cause the control component to rotate in the forward direction;

[0031] The second electromagnet is mounted on the electromagnet mounting base, and the telescopic rod of the second electromagnet is set corresponding to the control component to provide the driving force and cause the control component to rotate in the opposite direction.

[0032] Preferably, the rotor includes a rotor body, a housing, and end caps;

[0033] The rotor body is rotatably mounted on the shaft and is configured corresponding to the stator;

[0034] The outer casing is connected to the rotor body and is disposed around the outside of the stator;

[0035] The end cap is connected to one end of the outer casing;

[0036] The braking mechanism is located within the space enclosed by the end cap.

[0037] Preferably, a friction element is provided on the inner side of the end cap, and the friction element is used to engage with the brake element.

[0038] Preferably, it also includes a manual control mechanism, which includes a manual control component, a manual drive component, and an elastic component;

[0039] The manual control component is rotatably and movable and is mounted on the end cap.

[0040] The manual drive component is connected to the manual control component, and the manual control component can drive the manual drive component to move, so that the manual drive component squeezes the brake component and separates the brake component from the friction component;

[0041] The elastic element connects the end cap and the manual drive element respectively, so as to apply a thrust to the manual drive element and separate the manual drive element from the brake element.

[0042] Preferably, the manual control mechanism further includes a cover body fixed to the outside of the end cap and a rolling ball disposed between the cover body and the manual control component. The cover body is provided with a first rolling ball groove that partially accommodates the rolling ball, and the manual control component is provided with a second rolling ball groove that partially accommodates the rolling ball. The first rolling ball groove and / or the second rolling ball groove extend along the rotation direction of the manual control component, and the depth of the first rolling ball groove and / or the second rolling ball groove increases or decreases along the rotation direction of the manual control component.

[0043] Preferably, the manual control mechanism further includes a torsion spring, which connects the end cap and the manual control component to apply a boosting force to the manual operation and balance part of the thrust.

[0044] An electric vehicle includes a vehicle body and a brake motor as described in any one of the above descriptions.

[0045] The brake motor is mounted on the wheel of the vehicle body.

[0046] Compared with the prior art, the brake motor provided by the present invention includes a shaft, a stator, a rotor, and a braking mechanism. The stator is fixedly mounted on the shaft; the rotor is rotatably mounted on the shaft and arranged around the outside of the stator; the braking mechanism includes an electrically controlled telescopic assembly, a control assembly, and a brake element; the electrically controlled telescopic assembly is mounted on the shaft; the control assembly is rotatably mounted on the shaft; the brake element is mounted on the control assembly; the telescopic rod of the electrically controlled telescopic assembly is arranged corresponding to the control assembly to provide driving force to rotate the control assembly, causing the control assembly to move axially, thereby driving the brake element to engage or disengage from the rotor. In the brake motor, the electrically controlled telescopic assembly drives the control assembly to rotate, thereby converting the rotational motion into axial linear motion, which in turn drives the brake element to move, realizing the engagement or disengagement of the brake element from the rotor. This makes the braking and unlocking process smoother and more stable, and also better ensures successful unlocking of the motor, thus better guaranteeing the normal use of the motor. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 A schematic cross-sectional view of a brake motor provided in one embodiment;

[0049] Figure 2 for Figure 1 A cross-sectional view of some components of the brake motor at one angle.

[0050] Figure 3 for Figure 1 A cross-sectional view of some components of the brake motor from another angle.

[0051] Figure 4 for Figure 1 A three-dimensional structural diagram of some components of the brake motor shown;

[0052] Figure 5 for Figure 4 A three-dimensional structural schematic diagram of the transmission component shown;

[0053] Figure 6 for Figure 2 A three-dimensional structural schematic diagram of the second fixing plate shown;

[0054] Figure 7 for Figure 1 A three-dimensional structural diagram of some components of the brake motor shown;

[0055] Figure 8 for Figure 7 A three-dimensional structural diagram of the manual control component shown.

[0056] Figure 9 for Figure 7 A schematic diagram of the three-dimensional structure of the cover shown;

[0057] Figure 10 for Figure 3 The diagram shows a three-dimensional structure of the manual drive component. Detailed Implementation

[0058] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0059] It should be noted that when a component is referred to as being "fixed to", "mounted to", or "set on" another component, it can be directly on or indirectly set on the other component; when a component is "connected" to another component, or a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0060] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0061] This invention provides a brake motor, comprising a shaft, a stator, a rotor, and a braking mechanism. The stator is fixedly mounted on the shaft. The rotor is rotatably mounted on the shaft and arranged around the outside of the stator. The braking mechanism includes an electrically controlled telescopic assembly, a control assembly, and a brake element. The electrically controlled telescopic assembly is mounted on the shaft. The control assembly is rotatably mounted on the shaft. The brake element is mounted on the control assembly. The telescopic rod of the electrically controlled telescopic assembly is corresponding to the control assembly to provide driving force to rotate the control assembly, causing the control assembly to move axially, thereby engaging or disengaging the brake element from the rotor. In this brake motor, the electrically controlled telescopic assembly drives the control assembly to rotate, thereby converting the rotational motion into axial linear motion, which in turn moves the brake element, enabling engagement or disengagement between the brake element and the rotor. This makes the braking and unlocking process smoother and more stable, while also ensuring successful unlocking of the motor and better guaranteeing its normal operation.

[0062] Example 1

[0063] Please refer to the following: Figures 1 to 10 This embodiment provides a brake motor 100, which includes a shaft 10, a stator 20, a rotor 30, and a braking mechanism 40. The stator 20 is fixedly mounted on the shaft 10, and the rotor 30 is rotatably mounted on the shaft 10, with the rotor 30 arranged around the outside of the stator 20. That is, in this embodiment, the brake motor 100 is an external rotor motor, where the motor shaft is fixed, and the rotor is located on the outside.

[0064] The braking mechanism 40 includes an electrically controlled telescopic assembly 41, a control assembly 42, and a brake component 43. The electrically controlled telescopic assembly 41 is mounted on the shaft 10, meaning it is a component that can extend or retract in response to energization or de-energization. The control assembly 41 is rotatably mounted on the shaft 10, meaning it can rotate relative to the shaft 10 and, during rotation, can also move linearly along the axial direction of the shaft 10. In other words, by driving the control assembly 41 to rotate, rotational motion can be converted into linear motion. The brake component 43 is mounted on the control assembly 42, so that the movement of the control assembly 42 synchronously drives the movement of the brake component 43.

[0065] The telescopic rod of the electronically controlled telescopic assembly 41 is configured corresponding to the control assembly 42 to provide driving force for the control assembly 42 to rotate, causing the control assembly 42 to move axially, thereby engaging or disengaging the brake component 43 from the rotor 30. In this embodiment, the axial direction is always referenced to the axial direction of the shaft 10.

[0066] In other words, the electrically controlled telescopic assembly 41 provides the driving force to the control assembly 42. This driving force causes the control assembly 42 to rotate, and the control assembly 42 converts the rotational motion into axial linear motion, which in turn moves the brake component 43, changing its position and allowing it to engage or disengage from the rotor 30, thus achieving braking or unlocking. Using the electrically controlled telescopic assembly 41 to provide the driving force for braking and unlocking makes the process faster and less costly.

[0067] Understandably, current brake motors directly use an electronically controlled telescopic component to move the brake element linearly, thus achieving braking and unlocking. However, this braking and unlocking process is not smooth or stable. Furthermore, when the brake motor rotor is under load, braking and unlocking become very difficult, or even impossible. For example, when a brake motor is used on a wheelchair wheelchair, if there is a load at the wheel, resistance will exist at the motor rotor, hindering the brake motor from unlocking properly. In some cases, the electronically controlled telescopic component may fail to move the brake element, resulting in unsuccessful unlocking and affecting the normal use of the vehicle.

[0068] The electromagnetic brake 100 provided in this embodiment, by incorporating the control component 42, allows the electrically controlled telescopic component 41 to extend and retract, thereby rotating the control component 42. The control component 42 then converts the rotational motion into linear motion, which in turn moves the brake component 43, achieving braking and unlocking. This results in a smoother and more stable overall control process, better ensuring the effectiveness of braking and unlocking, and reducing the risk of damage to components. Furthermore, by converting rotational motion into linear motion for braking and unlocking, the movement distance of the brake component 43 can be more precisely controlled, improving control accuracy.

[0069] Preferably, the control component 42 includes a transmission component 421 and a control component 422. The transmission component 421 is rotatably mounted on the shaft 10 and is configured corresponding to the telescopic rod of the electrically controlled telescopic component 41. The control component 422 is connected to the transmission component 421 and can move axially under the drive of the transmission component 421. The brake component 43 is mounted on the control component 422. That is, in this embodiment, the driving force provided by the electrically controlled telescopic component 41 directly drives the transmission component 421 to rotate, and then the transmission component 421 converts the rotational motion into linear motion, driving the control component 422 to move linearly. Finally, the control component 422 drives the brake component 43 to move linearly, thereby achieving braking and unlocking. This structure better ensures the linear movement of the brake component 43, better ensures that the brake component 43 can smoothly engage and disengage from the rotor 30, and also ensures the reliability of the connection between components.

[0070] Preferably, a thrust bearing 44 is provided between the transmission component 421 and the control component 422 along the axial direction. This thrust bearing 44 allows for better force application to the control component 422, ensuring smoother operation and more reliable unlocking.

[0071] Preferably, the braking mechanism 40 further includes a frame 45, which is mounted on the shaft 10, and the electrically controlled telescopic assembly 41 is mounted on the frame 45. That is, in this embodiment, the electrically controlled telescopic assembly 41 is indirectly mounted on the shaft 10 via the frame 45. By providing the frame 45, the installation of the electrically controlled telescopic assembly 41 is facilitated, and it is better ensured that the electrically controlled telescopic assembly 41 can be installed in the required position.

[0072] Specifically, in this embodiment, the frame 45 includes a base 451, a first fixing plate 452, and a second fixing plate 453. The base 451 is fixedly connected to the shaft 10, and the first fixing plate 452 and the second fixing plate 453 are respectively fixedly connected to the base 451. The electrically controlled telescopic assembly 41 is fixedly installed on the base 451.

[0073] Preferably, a ball bearing 46 is provided between the transmission member 421 and the frame 45. The frame 45 has a first ball groove 454 that partially accommodates the ball bearing 46, and the transmission member 421 has a second ball groove 4211 that partially accommodates the ball bearing 46. "Partially accommodates" means that the depth of the ball groove is less than the diameter of the ball bearing 46, so that the ball bearing 46 is partially located outside the ball groove, allowing it to be sandwiched between the transmission member 421 and the frame 45. The first ball groove 454 and / or the second ball groove 4211 extend along the rotation direction of the transmission member 421, and their depths increase or decrease along the rotation direction of the transmission member 421. In this embodiment, both the first ball groove 454 and the second ball groove 4211 extend along the rotation direction of the transmission member 421, and their depths increase or decrease in the same direction. Therefore, when the transmission component 421 rotates to a certain position, the ball bearing 46 will be located in the shallower area of ​​the first ball bearing groove 454 and the second ball bearing groove 4211. At this time, due to the compression of the ball bearing 46, the distance between the transmission component 421 and the frame 45 will increase, so that the transmission component 421 can drive the brake component 43 to separate from the rotor 43. When the transmission component 421 rotates to another position, the ball bearing 46 will be located in the deeper area of ​​the first ball bearing groove 454 and the second ball bearing groove 4211. At this time, the transmission component 421 can be moved towards the brake component 43 under force, so that the distance between the transmission component 421 and the frame 45 will decrease, so that the transmission component 421 can drive the brake component 43 to engage with the rotor 43.

[0074] Specifically, in this embodiment, the first ball groove 454 is formed on the second fixing plate 453, that is, the first ball groove 454 is located between the transmission member 421 and the brake member 43. Of course, in other embodiments, the first ball groove 454 can also be formed on the back side of the transmission member 421 away from the brake member 43, which can also realize the rotatable and movable installation of the transmission member 421.

[0075] In this embodiment, the transmission member 421 has a first rotational state and a second rotational state after rotating relative to the shaft 10. When the transmission member 421 is in the first rotational state, the ball 46 is located in the deeper region of the first ball groove 454 and the second ball groove 4211, and the relative distance between the transmission member 421 and the second fixed plate 453 is relatively small. The transmission member 421 can drive the brake member 43 to engage with the rotor 30. When the transmission member 421 rotates, the ball 46 gradually moves in the first ball groove 454 and the second ball groove 4211, and the ball 46 gradually moves towards the shallower first ball groove 454. The areas of the ball groove 454 and the second ball groove 4211 move, so that the two opposite points of the ball 46 respectively abut against and restrict the transmission member 421 and the second fixed plate 453. This causes the ball 46 to squeeze and drive the transmission member 421 to move, gradually increasing the relative distance between the transmission member 421 and the second fixed plate 453. This transforms the rotational motion of the transmission member 421 into linear motion. When the transmission member 421 rotates to the second rotational state, it drives the control member 422 to move, and the control member 422 drives the brake member 43 to move, separating the brake member 43 from the rotor 30 and unlocking the rotor. Of course, in other embodiments, the specific structure of the transmission member 421 rotatably mounted on the frame 45 can also adopt other required structures, such as a ramp structure between the transmission member 421 and the frame 45, which guides the transmission member 421 to move linearly during rotation. Alternatively, a screw or similar structural solution could be used between the transmission component 421 and the frame 45. However, in this embodiment, a ball groove and the ball 46 are used, allowing the ball 46 to make point contact with the transmission component 421 and the second fixing plate 453. This reduces the required machining precision and effectively lowers the machining difficulty.

[0076] Preferably, the control component 42 further includes a main control elastic element 423, which is connected to the frame 45 and the control component 422 to apply a driving force to the control component 422, causing the brake component 43 to engage with the rotor 30. Here, an elastic element refers to a component that can undergo elastic deformation after being subjected to force and can return to its initial state when the force is reduced or eliminated. In this embodiment, the main control elastic element 423 is specifically a compression spring. By setting the main control elastic element 423 to apply the driving force to the control component 422, the brake component 43 can always be engaged with the rotor 30 for braking even when the electrically controlled telescopic component 41 is not powered. This structure eliminates the need for continuous power supply to the electrically controlled telescopic component 41 when braking the motor, thus effectively saving power.

[0077] In other words, by setting the main control elastic element 423, under normal conditions, the control element 422 will drive the brake element 43 to move due to the driving force applied by the main control elastic element 423, so that the brake element 43 engages with the rotor 30 to continuously brake, without needing to continuously apply the driving force through the electronically controlled telescopic assembly 41, thus effectively reducing energy consumption.

[0078] Preferably, the control component 42 further includes a balancing elastic element 424, which is connected to the frame 45 and the transmission element 421 respectively, to apply assistance to the control element 422 to balance part of the driving force. That is, the balancing elastic element 424 applies assistance to the control element 422 in a direction opposite to the driving force, thereby weakening the driving force on the control element 422. Specifically, in this embodiment, as... Figure 2 As shown, the main control elastic element 423 is used to provide the rightward driving force to the control element 422, while the balancing elastic element 424 is used to provide the leftward assist to the control element 422, and the assist is less than the driving force, so that the assist can balance part of the driving force, making the driving force on the control element 422 smaller.

[0079] Understandably, in existing technologies, to ensure the braking effect of electromagnetic brakes, the main control elastic component typically uses a high-strength elastic structure, resulting in a larger driving force applied by the main control elastic component to the control component. This also leads to greater resistance to overcome during unlocking, increasing the difficulty of unlocking and requiring the electronically controlled telescopic component to apply a larger driving force to the control component to achieve unlocking. Because of the large driving force required for unlocking, and the high elasticity of the main control elastic component, the components are subjected to excessive instantaneous force during unlocking and braking. This results in an unstable and unsmooth unlocking and braking process, and may even pose a risk of component damage.

[0080] In this embodiment, by setting the balancing elastic element 424, the assist applied to the control element 422 through the balancing elastic element 424 can weaken the driving force, allowing the electronically controlled telescopic assembly 41 to unlock with a smaller driving force, reducing the unlocking difficulty and saving energy. Furthermore, during unlocking and braking, the instantaneous force on the components can be reduced, making the unlocking and braking processes smoother and reducing the risk of component damage.

[0081] Specifically, in this embodiment, the balancing elastic element 424 is a torsion spring, thereby providing the assistance to the control element 422 by applying torque to the transmission element 421.

[0082] Preferably, the electrically controlled telescopic assembly 41 includes an electromagnet mounting base 411, a first electromagnet 412, and a second electromagnet 413. The electromagnet mounting base 411 is mounted on the shaft 10. Specifically, in this embodiment, the electromagnet mounting base 411 is mounted on the base 451, thereby mounting the shaft 10 via the base 451. The first electromagnet 412 is mounted on the electromagnet mounting base 411, and the telescopic rod 4121 of the first electromagnet is correspondingly arranged to the control assembly 42 to provide the driving force, causing the control assembly 42 to rotate forward. Specifically, in this embodiment, the telescopic rod 4121 of the first electromagnet is correspondingly arranged to the transmission member 421 to provide the driving force, causing the transmission member 421 to rotate forward. The second electromagnet 413 is mounted on the electromagnet mounting base 411, and the telescopic rod 4131 of the second electromagnet is correspondingly arranged to the control assembly 42 to provide the driving force, causing the control assembly 42 to rotate in the opposite direction. Specifically, in this embodiment, the telescopic rod 4131 of the second electromagnet is provided corresponding to the transmission member 421 to provide the driving force and cause the transmission member 421 to rotate in the opposite direction.

[0083] Here, forward rotation and reverse rotation refer to two opposite directions of rotation. For example, in one embodiment, if the forward rotation is clockwise, then the reverse rotation is counterclockwise. In another embodiment, if the forward rotation is counterclockwise, then the reverse rotation is clockwise.

[0084] In other words, the electrically controlled telescopic assembly 41 provided in this embodiment, by setting the first electromagnet 412 and the second electromagnet 413, can provide the driving force to the transmission member 421 respectively after being energized, so that the transmission member 421 can rotate in two different directions, thereby realizing braking and unlocking.

[0085] Specifically, in this embodiment, when the first electromagnet 412 drives the transmission member 421 to rotate forward to a certain position, the control member 422 drives the brake member 43 to engage with the rotor 30, thereby achieving braking. Conversely, when the second electromagnet 413 drives the transmission member 421 to rotate in the opposite direction to a certain position, the control member 422 drives the brake member 43 to disengage from the rotor 30, thereby unlocking.

[0086] Understandably, in existing brake motors, the electromagnets are independent of each other, and they cannot be linked together, increasing the difficulty of control. Furthermore, the electromagnets can only control the brake component to move rapidly in one direction; the opposite direction requires reset via the elastic force of a spring, affecting the timeliness of unlocking or locking, and also limiting the design of components within the brake motor.

[0087] In the brake motor 100 provided in this embodiment, the electronically controlled telescopic component 41 and the control component 42 can be integrated into a single structure, allowing the first electromagnet 412 and the second electromagnet 413 to be linked. During unlocking or braking, only the second electromagnet 413 and the first electromagnet 412 need to be energized individually, simplifying control and enabling the telescopic rod of the other electromagnet to retract quickly without affecting normal unlocking or locking, thus better ensuring the speed and stability of unlocking and braking. Simultaneously, this structure allows the first electromagnet 412 and the second electromagnet 413 to control the transmission component 421 to rotate in two opposite directions. By controlling the transmission component 421 to rotate to different angles, unlocking or braking can be achieved. The overall structure is more compact and simple, while also making unlocking and braking faster and more convenient.

[0088] The rotor 30 includes a rotor body 31, a housing 32, and an end cover 33. The rotor body 31 is rotatably mounted on the shaft 10 and is positioned corresponding to the stator 20. The housing 32 is connected to the rotor body 31 and surrounds the outside of the stator 20. The end cover 33 is connected to one end of the housing 32, and the braking mechanism 40 is located within the space enclosed by the end cover 33. This structure better ensures the overall operational stability of the brake motor 100 and better prevents contamination of components in the brake motor 100 from affecting its normal operation.

[0089] Preferably, a friction element 34 is provided on the inner side of the end cap 33, and the friction element 34 is used to engage with the brake element 43. That is, the position of the friction element 34 corresponds to that of the brake element 43. When the control component 42 drives the brake element 43 to move and engage with the rotor 30, the brake element 43 specifically engages with the friction element 34 to achieve braking. Through the cooperation between the friction element 34 and the brake element 43, the braking effect can be better guaranteed.

[0090] Preferably, the brake motor 100 further includes a manual control mechanism 50, which includes a manual control component 51, a manual drive component 52, and an elastic component 53. The manual control component 51 is rotatably mounted on the end cover 33. The manual drive component 52 is connected to the manual control component 51, and the manual control component 51 can drive the manual drive component 52 to move, causing the manual drive component 52 to press against the brake component 43, separating the brake component 43 from the friction component 34. The elastic component 53 is connected to both the end cover 33 and the manual drive component 52 to apply a pushing force to the manual drive component, causing the manual drive component 52 to separate from the brake component 43.

[0091] In other words, in this embodiment, the manual control component 51 can convert rotational motion into linear motion. When the operator controls the manual control component 51 to rotate, the manual control component 51 can drive the manual drive component 52 to move, causing the manual drive component 52 to squeeze the brake component 43 (or separate from the brake component 43). Thus, by manually controlling the rotation of the manual control component 51, the position of the brake component 43 can be controlled, thereby achieving manual unlocking.

[0092] Specifically, the manual control member 51 has a first rotation control state and a second rotation control state after the end cap 33 rotates relative to it. In the first rotation control state, the elastic member 53 extends to space the manual drive member 52 and the brake member 33 apart. In the second rotation control state, the manual control member 51 squeezes the manual drive member 52 and compresses the elastic member 53 to squeeze the brake member 43, separating the brake member 43 from the friction member 34. That is to say, the manual control member 51 has at least two rotation position states. When the manual control member 51 rotates to the first rotation control state, the manual control member 51 will not squeeze the manual drive member 52, so the manual drive member 52 can be spaced apart from the brake member 43 under the elastic force of the elastic member 53. In this state, the manual control mechanism 50 will not affect the braking mechanism 40, allowing the braking mechanism 40 to operate normally. When the manual control member 51 is rotated to the second rotation control state, the manual control member 51 will press against the manual drive member 52, thereby compressing the elastic member 53. At the same time, the manual drive member 52 will move towards the side closer to the brake member 43, so that the manual drive member 52 abuts against and presses the brake member 43, causing the brake member 43 to move and separate the brake member 43 from the friction member 34. Thus, the braking mechanism 40 can be unlocked manually, allowing the rotor 30 to run smoothly.

[0093] Understandably, in existing brake motors, when the power supply to the electronically controlled telescopic assembly is depleted or malfunctions, the movement of the brake components cannot be controlled, resulting in the inability to unlock the rotor. This causes the brake motor to remain in a braking state, affecting normal use.

[0094] In this embodiment, a manual control mechanism 50 is provided. When the power supply to the electronically controlled telescopic component 41 in the braking mechanism 40 is depleted or malfunctions, the operator can manually control the manual control component 51 to move the manual drive component 52, thereby driving the brake component 43 and separating it from the rotor 30, ensuring the normal operation of the brake motor 100. Furthermore, the manual control mechanism 50 includes an elastic component 53. When manual control of the brake component 43 is not required, the elastic component 53 can also move the manual drive component 52 to the corresponding position without affecting the normal use of the braking mechanism 40.

[0095] Preferably, the manual control mechanism 50 further includes a cover 54 fixed to the outside of the end cap 33 and a ball bearing 55 disposed between the cover 54 and the manual control member 51. The cover 54 has a first ball bearing groove 541 partially accommodating the ball bearing 55, and the manual control member 51 has a second ball bearing groove 511 partially accommodating the ball bearing 55. The first ball bearing groove 541 and / or the second ball bearing groove 511 extend along the rotation direction of the manual control member 51, and their depths increase or decrease along the rotation direction of the manual control member 51. Specifically, in this embodiment, only the second ball bearing groove 511 extends along the rotation direction of the manual control member 51, and its depth increases or decreases. Thus, when the manual control member 51 rotates to the first rotation control state, the ball bearing 55 is located in the deeper region of the second ball bearing groove 511, and the distance between the manual control member 51 and the cover 54 is relatively short. When the manual control member 51 is rotated to the second rotation control state, the rolling ball 55 is located in the shallower area of ​​the second rolling ball groove 511. The rolling ball 55 squeezes the manual control member 51, thereby the manual control member 51 squeezes the manual drive member 52, separating the brake member 43 from the friction member 34.

[0096] Similarly, in other embodiments, only the first ball groove 541 extends along the rotation direction of the manual control member 51, with increasing or decreasing depth. Alternatively, both the first ball groove 541 and the second ball groove 511 extend along the rotation direction of the manual control member 51, with increasing or decreasing depth. Furthermore, the specific structure of the manual control member 51 rotatably mounted on the end cover 33 can also employ other desired structures, such as a ramp structure between the manual control member 51 and the end cover 33, which guides the manual control member 51 to move linearly during rotation. Alternatively, a screw or similar structure can be used between the manual control member 51 and the end cover 33. In this embodiment, the use of ball grooves and the ball 55 ensures point contact between the ball 55 and the manual control member 51 and the cover 54, requiring low machining precision and effectively reducing machining difficulty.

[0097] Preferably, the manual control mechanism 50 further includes a torsion spring 56, which connects the end cap 33 and the manual control member 51 respectively, so as to apply a boosting force to the manual drive member 52 and balance part of the thrust.

[0098] Understandably, when an operator needs to use the manual control 51 to unlock the brake 43, they must overcome the resistance exerted by the braking mechanism 40 and the elastic element 53. In this embodiment, the torsion spring 36 provides a certain amount of assist force to balance the resistance exerted by the braking mechanism 40 and the elastic element 53, allowing the operator to apply less force to rotate the manual control 51. This facilitates operation and makes the process smoother and more stable.

[0099] To prevent accidental rotation of the manual control component 51 and to better maintain either the first or second rotation control state, a snap-fit ​​structure can be provided on the end cap 33. This snap-fit ​​structure engages with the corresponding area of ​​the manual control component 51 to better maintain either the first or second rotation control state. For example, a spring-loaded structure can be provided on the end cap 33, and two slots can be provided on the manual control component 51. When the manual control component 51 rotates to different states, the spring-loaded structure snaps into the corresponding slots to maintain the state of the manual control component 51.

[0100] Preferably, the manual control component 51 is located on the outside of the end cap 33, and a portion of the manual drive component 52 is located on the outside of the end cap 33, while the other portion of the manual drive component 52 passes through the end cap 33 to press the brake component 43. This structure facilitates the operator's control over the manual control component 51 and also better ensures the reliability of the overall structure.

[0101] Preferably, the manual drive component 52 includes a plate 521 and a drive column 522. The plate 521 is connected to the manual control component 51. One end of the drive column 522 is connected to the plate 521, and the other end of the drive column 522 passes through the end cap 33 to press the brake component 43. The two ends of the elastic component 53 are respectively connected to the plate 521 and the end cap 33. This structure better ensures that the manual control mechanism 50 presses and pushes the brake component 43. More preferably, multiple drive columns 522 are provided, arranged in a circular array on the plate 521. This better balances the force exerted by the drive columns 522 on the brake component 43, preventing the brake component 43 from deflecting under force. Specifically, in this embodiment, three drive columns 522 are provided.

[0102] Preferably, a speed reducer 60 is provided between the rotor body 31 and the outer casing 32.

[0103] More preferably, an energy storage element, such as a capacitor, can be installed on the controller of the brake motor 100. Thus, if the braking mechanism 40 experiences a power outage, the energy storage element can supply power to the braking mechanism 40, achieving automatic braking and better ensuring safety.

[0104] Example 2

[0105] This embodiment provides an electric vehicle, including a vehicle body and a brake motor 100 as described in Embodiment 1, wherein the brake motor 100 is mounted on the wheel of the vehicle body. Specifically, the electric vehicle may be a small electric vehicle such as an electric wheelchair, an electric bicycle, or an electric-assisted bicycle.

[0106] The above description is merely an embodiment of the present invention. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements all fall within the protection scope of the present invention.

Claims

1. A brake motor, characterized in that, Includes shaft, stator, rotor and braking mechanism; The stator is fixedly mounted on the shaft; The rotor is rotatably mounted on the shaft, and the rotor is arranged around the outside of the stator; The braking mechanism includes an electronically controlled telescopic assembly, a control assembly, and a brake component; The electrically controlled telescopic assembly is mounted on the shaft; The control component is rotatably and movable on the shaft; The braking component is mounted on the control assembly; The telescopic rod of the electronically controlled telescopic assembly is configured to correspond to the control assembly, so as to provide driving force to make the control assembly rotate. During the rotation, the control assembly can also move linearly along the axial direction of the shaft, so as to drive the brake to engage or disengage from the rotor.

2. The brake motor according to claim 1, characterized in that, The control component includes a transmission component and a control component; The transmission component is rotatably and movablely mounted on the shaft, and the transmission component is configured to correspond to the telescopic rod of the electrically controlled telescopic assembly; The control component is connected to the transmission component, and the control component can move axially under the drive of the transmission component; The brake component is mounted on the control component.

3. The brake motor according to claim 2, characterized in that, A thrust bearing is provided between the transmission component and the control component along the axial direction.

4. The brake motor according to claim 2 or 3, characterized in that, The braking mechanism also includes a frame; The frame is mounted on the shaft; The electrically controlled telescopic assembly is installed on the frame.

5. The brake motor according to claim 4, characterized in that, A ball bearing is provided between the transmission component and the frame. The frame has a first ball bearing groove that partially accommodates the ball bearing, and the transmission component has a second ball bearing groove that partially accommodates the ball bearing. The first ball bearing groove and / or the second ball bearing groove extend along the rotation direction of the transmission component, and the depth of the first ball bearing groove and / or the second ball bearing groove increases or decreases along the rotation direction of the transmission component.

6. The brake motor according to claim 4, characterized in that, The control component also includes a main control elastic element; The main control elastic element is connected to the frame and the control element respectively, so as to apply a driving force to the control element and make the brake element engage with the rotor.

7. The brake motor according to claim 6, characterized in that, The control assembly also includes a balancing elastic element; The balancing elastic element connects the frame and the transmission element respectively to apply assistance to the control element in order to balance part of the driving force.

8. The brake motor according to claim 1, characterized in that, The electrically controlled telescopic assembly includes an electromagnet mounting base, a first electromagnet, and a second electromagnet. The electromagnet mounting base is mounted on the shaft; The first electromagnet is mounted on the electromagnet mounting base, and the telescopic rod of the first electromagnet is set corresponding to the control component to provide the driving force and cause the control component to rotate in the forward direction; The second electromagnet is mounted on the electromagnet mounting base, and the telescopic rod of the second electromagnet is set corresponding to the control component to provide the driving force and cause the control component to rotate in the opposite direction.

9. The brake motor according to claim 1, characterized in that, The rotor includes a rotor body, a housing, and end caps; The rotor body is rotatably mounted on the shaft and is configured corresponding to the stator; The outer casing is connected to the rotor body and is disposed around the outside of the stator; The end cap is connected to one end of the outer casing; The braking mechanism is located within the space enclosed by the end cap.

10. The brake motor according to claim 9, characterized in that, A friction element is provided on the inner side of the end cap, and the friction element is used to engage with the brake element.

11. The brake motor according to claim 10, characterized in that, It also includes a manual control mechanism, which includes a manual control component, a manual drive component, and an elastic component; The manual control component is rotatably and movable and is mounted on the end cap. The manual drive component is connected to the manual control component, and the manual control component can drive the manual drive component to move, so that the manual drive component squeezes the brake component and separates the brake component from the friction component; The elastic element connects the end cap and the manual drive element respectively, so as to apply a thrust to the manual drive element and separate the manual drive element from the brake element.

12. The brake motor according to claim 11, characterized in that, The manual control mechanism further includes a cover body fixed to the outside of the end cap and a rolling ball disposed between the cover body and the manual control component. The cover body is provided with a first rolling ball groove that partially accommodates the rolling ball, and the manual control component is provided with a second rolling ball groove that partially accommodates the rolling ball. The first rolling ball groove and / or the second rolling ball groove extend along the rotation direction of the manual control component, and the depth of the first rolling ball groove and / or the second rolling ball groove increases or decreases along the rotation direction of the manual control component.

13. The brake motor according to claim 12, characterized in that, The manual control mechanism also includes a torsion spring, which connects the end cap and the manual control component to apply a boosting force to the manual drive component and balance part of the thrust.

14. An electric vehicle, characterized in that, Includes the vehicle body and the brake motor as described in any one of claims 1 to 13; The brake motor is mounted on the wheel of the vehicle body.

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