Electromagnetic brake, brake motor and electric vehicle

Abstract

The application provides an electromagnetic brake, which comprises a frame, an electric control telescopic assembly, a control assembly and a brake piece; the electric control telescopic assembly is installed on the frame; the control assembly is rotatably installed on the frame; the brake piece is installed on the control assembly; a telescopic rod of the electric control telescopic assembly is arranged correspondingly to the control assembly to provide driving force for rotating the control assembly, and to make the control assembly move linearly to drive the brake piece to combine with or separate from the rotor of the motor. Meanwhile, the application also provides a brake motor and an electric vehicle. Compared with the prior art, the electromagnetic brake, the brake motor and the electric vehicle provided by the application are more stable and smooth during braking and unlocking, and can better ensure the unlocking success.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor braking, in particular to an electromagnetic brake, a brake motor and an electric vehicle. BACKGROUND

[0002] The electromagnetic brake is a mechanical device for stopping or decelerating moving parts in machinery, which has the advantages of compact structure, simple operation, sensitive response, reliable use, easy control, etc. The electromagnetic brake is mainly used with the motor, and the electromagnetic brake is usually designed and installed at the tail of the motor. The electromagnetic brake stops the rotor in the motor, thereby achieving the braking of the motor.

[0003] The electromagnetic brake of the prior art mainly includes an electric control telescopic component and a brake component. When controlling, a control electric signal is applied to the electric control telescopic component to generate a corresponding magnetic field in the electric control telescopic component, so that the telescopic rod of the electric control telescopic component is telescoped to drive the brake component to move, so that the brake component is combined with or separated from the rotor of the motor, thereby achieving the braking and unlocking of the motor. The form of driving the brake component to move through the electric control telescopic component can make the braking and unlocking more rapid.

[0004] However, in the electromagnetic brake of the prior art, the brake component is directly driven to move linearly through the linear movement of the electric control telescopic component, thereby achieving the braking and unlocking of the motor. The braking and unlocking process is not smooth enough, and when there is a load on the rotor of the motor, there is resistance, which makes the unlocking difficult, and even cannot be successfully unlocked, thereby affecting the normal use of the motor. SUMMARY

[0005] In the electromagnetic brake of the prior art, the brake component is directly driven to move linearly through the linear movement of the electric control telescopic component, thereby achieving the braking and unlocking of the rotor of the motor. The braking and unlocking process is not smooth enough, and even when there is resistance on the rotor of the motor, it cannot be successfully unlocked, thereby affecting the normal use of the motor. The present application provides an electromagnetic brake, which is provided with a control assembly between the electric control telescopic component and the brake component. The telescopic rod of the electric control telescopic component can drive the control assembly to rotate, and the control assembly can convert the rotary motion into linear motion, thereby driving the brake component to move linearly, achieving the braking and unlocking of the rotor of the motor, making the braking and unlocking process more smooth, and better ensuring that the motor can be successfully unlocked, thereby better protecting the normal use of the motor.

[0006] An electromagnetic brake, comprising a frame, an electric control telescopic assembly, a control assembly and a brake component.

[0007] The electric control telescopic assembly is installed on the frame.

[0008] The control assembly is rotatably and movably installed on the frame body;

[0009] The brake is installed on the control assembly;

[0010] The telescopic rod of the electric control telescopic assembly is arranged corresponding to the control assembly to provide driving force for the rotation of the control assembly, and to drive the linear movement of the control assembly to combine or separate the brake and the rotor of the motor.

[0011] Preferably, the control assembly comprises a control mechanism and a control rod;

[0012] The control mechanism is rotatably and movably installed on the frame body;

[0013] The control rod is connected with the control mechanism and can be linearly moved under the driving of the control mechanism;

[0014] The brake is installed on the control rod;

[0015] The telescopic rod of the electric control telescopic assembly is arranged corresponding to the control mechanism.

[0016] Preferably, the control assembly further comprises a main control elastic member;

[0017] The main control elastic member is connected with the frame body and the control rod respectively to apply driving force to the control rod to combine the brake and the rotor of the motor.

[0018] Preferably, the control assembly further comprises a balance elastic member;

[0019] The balance elastic member is connected with the frame body and the control mechanism respectively to apply auxiliary force to the control rod to balance part of the driving force.

[0020] Preferably, the electromagnetic brake further comprises a position maintaining mechanism;

[0021] The position maintaining mechanism is arranged on the frame body and arranged corresponding to the control mechanism to abut against the control mechanism to maintain the state after the rotation of the control mechanism;

[0022] And / or, the position maintaining mechanism is arranged on the frame body and arranged corresponding to the electric control telescopic assembly to adsorb the telescopic rod of the electric control telescopic assembly to maintain the state after the rotation of the control mechanism.

[0023] Preferably, the electric control telescopic assembly comprises a first electromagnet and a second electromagnet;

[0024] The first electromagnet is installed on the frame body, and the telescopic rod of the first electromagnet is arranged corresponding to the control mechanism to provide the driving force for the forward rotation of the control assembly;

[0025] The second electromagnet is mounted on the frame body, and a telescopic rod of the second electromagnet is arranged corresponding to the control mechanism to provide the driving force for the control assembly to rotate reversely.

[0026] Preferably, the control mechanism comprises a first adjusting seat, a first connecting member and a second connecting member.

[0027] The first adjusting seat is movably mounted on the frame body.

[0028] The first connecting member connects the telescopic rod of the first electromagnet and the first adjusting seat.

[0029] The second connecting member connects the telescopic rod of the second electromagnet and the first adjusting seat.

[0030] The control rod is connected with the first adjusting seat.

[0031] Preferably, the first connecting member comprises a first connecting member body and a first connecting column, the first connecting member body is connected with the telescopic rod of the first electromagnet, the first connecting column is arranged on the first connecting member body and inserted into the first adjusting seat.

[0032] The second connecting member comprises a second connecting member body and a second connecting column, the second connecting member body is connected with the telescopic rod of the second electromagnet, the second connecting column is arranged on the second connecting member body and inserted into the first adjusting seat.

[0033] Preferably, the first adjusting seat is provided with a first connecting arm and a second connecting arm, the first connecting arm and the second connecting arm are located at opposite sides along the rotating direction of the first adjusting seat.

[0034] The first connecting column is inserted into a first connecting groove of the first connecting arm.

[0035] The second connecting column is inserted into a second connecting groove of the second connecting arm.

[0036] Preferably, the first connecting groove is recessed from the outer surface of the first connecting arm towards the second connecting arm.

[0037] The second connecting groove is recessed from the outer surface of the second connecting arm towards the first connecting arm.

[0038] Preferably, a ball is arranged between the control mechanism and the frame body, a first ball groove partially accommodating the ball is arranged on the frame body, a second ball groove partially accommodating the ball is arranged on the control mechanism, the first ball groove and / or the second ball groove extends along the rotating direction of the control mechanism, and the depth of the first ball groove and / or the second ball groove increases or decreases along the rotating direction of the control mechanism.

[0039] Preferably, the first ball is arranged at least in two, the adjacent two first balls are arranged at intervals, and each first ball is correspondingly arranged with a first ball groove and a second ball groove.

[0040] The electromagnetic brake further comprises a synchronizing ring arranged between the control mechanism and the frame body, and the synchronizing ring is rotatable relative to the frame body, the synchronizing ring is provided with ball holes matched with the first balls, and each first ball is correspondingly arranged with a ball hole.

[0041] Preferably, the first ball groove comprises a first accommodating groove, a second accommodating groove and a first transition groove, the recess depth of the second accommodating groove is greater than that of the first accommodating groove, the first transition groove communicates the first accommodating groove and the second accommodating groove, the bottom wall of the first transition groove is inclined, the bottom wall of the first accommodating groove comprises a first stay surface connected with the bottom wall of the first transition groove, the first stay surface is inclined inwardly of the first accommodating groove relative to the bottom wall of the first transition groove, and the bottom wall of the second accommodating groove comprises a second stay surface connected with the bottom wall of the first transition groove, the second stay surface is inclined outwardly of the second accommodating groove relative to the bottom wall of the first transition groove.

[0042] Preferably, the second ball groove comprises a third accommodating groove, a fourth accommodating groove and a second transition groove, the recess depth of the fourth accommodating groove is greater than that of the third accommodating groove, the second transition groove communicates the fourth accommodating groove and the third accommodating groove, the bottom wall of the second transition groove is inclined, the bottom wall of the third accommodating groove comprises a third stay surface connected with the bottom wall of the second transition groove, the third stay surface is inclined inwardly of the third accommodating groove relative to the bottom wall of the second transition groove, and the bottom wall of the fourth accommodating groove comprises a fourth stay surface connected with the bottom wall of the second transition groove, the fourth stay surface is inclined outwardly of the fourth accommodating groove relative to the bottom wall of the second transition groove.

[0043] Preferably, a thrust bearing is arranged between the control mechanism and the control rod along the movable direction of the control rod.

[0044] Preferably, a manual control mechanism is further arranged.

[0045] The manual control mechanism is rotatably installed on the frame body, and has a first rotation control state and a second rotation control state after relative rotation with the frame body; in the first rotation control state, the manual control mechanism is spaced apart from the control assembly; in the second rotation control state, the manual control mechanism abuts against and limits the control assembly, so as to combine or separate the brake piece and the rotor of the motor.

[0046] Preferably, the electric control telescopic assembly, the control assembly and the brake piece are all installed in the frame body.

[0047] The frame body is provided with an avoiding opening extending through the frame body along the rotation direction of the manual control mechanism.

[0048] Part of the manual control mechanism is installed in the frame body, and the other part of the manual control mechanism extends out of the frame body from the avoiding opening, and the manual control mechanism can slide in the avoiding opening.

[0049] The electromagnetic brake further comprises a sealing member installed at the avoiding opening and connected with the manual control mechanism.

[0050] Preferably, the sealing member comprises a sealing ring and a sealing cover.

[0051] The sealing ring is sleeved on the frame body.

[0052] The sealing cover is connected with the sealing ring and covers the part of the manual control mechanism located outside the frame body.

[0053] Preferably, the position detector is further included.

[0054] The position detector is installed in the frame body to detect the first rotation control state and / or the second rotation control state of the manual control mechanism.

[0055] Preferably, the limiting member is further included.

[0056] The limiting member is installed in the frame body to abut against and limit the manual control mechanism, so as to keep the manual control mechanism in the first rotation control state or the second rotation control state.

[0057] A brake motor comprises a motor and an electromagnetic brake as claimed in any one of the above.

[0058] The frame body is installed on the stator of the motor.

[0059] Preferably, the motor is an internal rotor motor, the frame is mounted on the outer shell of the motor, and the rotating shaft of the motor is provided with a friction element for engaging with the brake element.

[0060] An electric vehicle includes a vehicle body and a brake motor as described in any one of the above descriptions.

[0061] The brake motor is mounted on the wheel of the vehicle body.

[0062] Compared with existing technologies, the electromagnetic brake provided by this invention includes a frame, an electrically controlled telescopic assembly, a control assembly, and a brake component. The electrically controlled telescopic assembly is mounted on the frame. The control assembly is rotatably mounted on the frame. The brake component is mounted on the control assembly. The telescopic rod of the electrically controlled telescopic assembly is correspondingly arranged to the control assembly to provide driving force to rotate the control assembly, thereby causing the control assembly to move linearly and engage or disengage the brake component with the motor rotor. In this electromagnetic brake, the electrically controlled telescopic assembly drives the control assembly to rotate, thus converting the rotational motion into linear motion, which in turn moves the brake component, enabling the brake component to engage or disengage with the motor 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. Attached Figure Description

[0063] 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.

[0064] Figure 1 A three-dimensional structural schematic diagram of a brake motor provided in one embodiment;

[0065] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the brake motor shown.

[0066] Figure 3 for Figure 2 A magnified view of a portion of region A shown below;

[0067] Figure 4 for Figure 1 A three-dimensional structural diagram of some components of the electromagnetic brake in the brake motor shown.

[0068] Figure 5 for Figure 4 A three-dimensional structural diagram of some components of the structure shown;

[0069] Figure 6 Fig. 1 is a perspective view of a brake motor according to an embodiment of the present application; Figure 4

[0070] Figure 7 Figure 3

[0071] Figure 8 Figure 3

[0072] Figure 9 Figure 1

[0073] Figure 10 Figure 1

[0074] Figure 11 Figure 1

[0075] Figure 12

[0076] Figure 13 Figure 12

[0077] Figure 14 Figure 13

[0078] Figure 15 Figure 14

[0079] Figure 16 Figure 13

[0080] Figure 17 Figure 16

[0081] Figure 18 Figure 12

[0082] Figure 19 Figure 12 ​​​​​​​​​​​​​​​​​​​​​​​​​​

[0083] Figure 20 A cross-sectional view of a brake motor according to another embodiment is provided.

[0084] Figure 21 A cross-sectional view of a brake motor according to another embodiment is provided. Figure 20 A cross-sectional view of a brake motor according to another embodiment is provided.

[0085] Figure 22 A cross-sectional view of a brake motor according to another embodiment is provided. Figure 20 A cross-sectional view of a brake motor according to another embodiment is provided.

[0086] Figure 23 A cross-sectional view of a brake motor according to another embodiment is provided. Figure 21 A cross-sectional view of a brake motor according to another embodiment is provided.

[0087] Figure 24 A cross-sectional view of a brake motor according to another embodiment is provided. Figure 21 A cross-sectional view of a brake motor according to another embodiment is provided.

[0088] Figure 25 A cross-sectional view of a brake motor according to another embodiment is provided. Figure 21 A cross-sectional view of a brake motor according to another embodiment is provided.DETAILED DESCRIPTION

[0089] In order to make the skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the skilled in the art without creative labor fall within the scope of protection of the present application.

[0090] It should be noted that when a component is referred to as being "fixed", "attached" or "disposed" on another component, it can be directly on the other component or indirectly on the other component; when a component is "connected" with another component, or a component is referred to as being "connected" to another component, it can be directly connected to the other component or indirectly connected to the other component.

[0091] It should be noted that the structure, proportion, size, etc. shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, to enable the skilled in the art to understand and read, and are not used to limit the conditions of the embodiments of the present application, and therefore do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0092] The electromagnetic brake provided by the application comprises a frame, an electric control telescopic assembly, a control assembly and a brake piece; the electric control telescopic assembly is installed on the frame; the control assembly is installed on the frame in a rotatable and movable manner; the brake piece is installed on the control assembly; the telescopic rod of the electric control telescopic assembly is arranged corresponding to the control assembly to provide driving force for rotating the control assembly, so that the control assembly moves linearly to drive the brake piece to combine with or separate from the rotor of the motor. In the electromagnetic brake, the control assembly is driven to rotate by the electric control telescopic assembly, so that the rotary motion is converted into linear motion by the control assembly, thereby driving the brake piece to move, realizing the combination or separation of the brake piece and the rotor of the motor, making the braking and unlocking process more stable and smooth, and better ensuring the successful unlocking of the motor and better protecting the normal use of the motor.

[0093] Embodiment one

[0094] Please refer to Figures 1 to 11 The embodiment provides an electromagnetic brake 100, which comprises a frame 10, an electric control telescopic assembly 20, a control assembly 30 and a brake piece 40. The electric control telescopic assembly 20 is installed on the frame 10. The electric control telescopic assembly 20 refers to a component that can perform telescopic action after being powered on or powered off. The control assembly 30 is installed on the frame 10 in a rotatable and movable manner. The control assembly 30 is installed on the frame 10, and the control assembly 30 can rotate relative to the frame 10. During rotation, the control assembly 30 can also move linearly along the axis of the rotation axis. That is, the control assembly 30 is driven to rotate, so that the rotary motion is converted into linear motion. The brake piece 40 is installed on the control assembly 30, so that the movement of the control assembly 30 can drive the brake piece 40 to move synchronously.

[0095] The telescopic rod of the electric control telescopic assembly 20 is arranged corresponding to the control assembly 30 to provide driving force for rotating the control assembly 30, so that the control assembly 30 moves linearly to drive the brake piece 40 to combine with or separate from the rotor of the motor. The telescopic rod of the electric control telescopic assembly 20 is arranged corresponding to the control assembly 30, that is, part of the structure of the control assembly 30 is located on the movement path of the telescopic rod of the electric control telescopic assembly 20, so that when the telescopic rod of the electric control telescopic assembly 20 moves, it will correspondingly touch and press the control assembly 30, so that the control assembly 30 rotates correspondingly.

[0096] That is, the electric control telescopic assembly 20 is used to provide the driving force to the control assembly 30, through which the control assembly 30 can be driven to rotate, and the control assembly 30 can convert the rotary motion into linear motion, thereby driving the brake piece 40 to move linearly, changing the position of the brake piece 40, so that the brake piece 40 is combined or separated from the rotor of the motor to realize braking or unlocking. By providing driving force through the electric control telescopic assembly 20 to realize braking and unlocking, the braking and unlocking process can be faster and the cost is lower.

[0097] It should be noted that the brake piece 40 can directly contact the rotor of the motor to realize braking, or the brake piece 40 can contact the component installed on the rotor of the motor to realize braking, that is, only through the brake piece 40 directly or indirectly contacting the rotor of the motor to generate frictional resistance, braking can be realized.

[0098] It can be understood that in the prior art electromagnetic brake, the brake piece is directly driven by the electric control telescopic piece to move linearly, thereby realizing braking and unlocking, and the braking and unlocking process is not smooth enough. And when the rotor of the motor has a load, it will be very difficult to brake and unlock, and even the braking and unlocking cannot be successfully performed. For example, when the motor is applied to the wheels of a wheelchair, there is a load at the wheels, and at this time, the rotor of the motor will have resistance, which will hinder the normal unlocking of the motor, and even the electric control telescopic piece may not be able to drive the brake piece to move, and the vehicle cannot be successfully unlocked, affecting the normal use of the vehicle.

[0099] The electromagnetic brake 100 provided in the embodiment is provided with the control assembly 30, the electric control telescopic assembly 20 drives the control assembly 30 to rotate, thereby converting the rotary motion into linear motion through the control assembly 30, and driving the brake piece 40 to move linearly, thereby realizing braking and unlocking, and the overall control process is more stable and smooth, which can better guarantee the effectiveness of braking and unlocking, and can better avoid damage to the driving components. At the same time, the braking and unlocking through the conversion of rotary motion into linear motion can also control the movement distance of the brake piece 40 more accurately, which can improve the control accuracy.

[0100] Preferably, the control assembly 30 comprises a control mechanism 31 and a control rod 32, the control mechanism 31 is movably installed on the frame 10. The control rod 32 is connected with the control mechanism 31, and the control rod 32 can move linearly under the driving of the control mechanism 31. The brake 40 is installed on the control rod 32, and the telescopic rod of the electric control telescopic assembly 20 is arranged corresponding to the control mechanism 31. That is, in this embodiment, the driving force provided by the electric control telescopic assembly 20 is used to directly drive the control mechanism 31 to rotate, and then the rotation is converted into linear motion by the control mechanism 31, so as to drive the control rod 32 to move linearly, and finally drive the brake 40 to move linearly through the control rod 32, so as to realize braking and unlocking. Through this structure, the linear movement of the brake 40 is better guaranteed, and the brake 40 can be combined with and separated from the rotor of the motor smoothly, and the reliability of the connection between the components is also guaranteed.

[0101] Preferably, the control assembly 30 further comprises a main control elastic member 33, and the main control elastic member 33 is connected with the frame 10 and the control rod 32 respectively, so as to apply a driving force to the control rod 32, so that the brake 40 is combined with the rotor of the motor. The elastic member refers to a component that can be elastically deformed under stress, and can restore the initial state when the stress is reduced or eliminated. In this embodiment, the main control elastic member 33 is specifically a compression spring. By applying the driving force to the control rod 32 through the main control elastic member 33, the brake 40 can be combined with the rotor of the motor at all times and braked in the state that the electric control telescopic assembly 20 is not powered. Through this structure, the electric control telescopic assembly 20 does not need to be continuously powered when the motor is braked, so that the power supply is effectively saved.

[0102] That is, by arranging the main control elastic member 33, under normal conditions, the control rod 32 will move the brake 40 to combine the brake 40 with the rotor of the motor due to the driving force applied by the main control elastic member 33, and continuous braking is performed without the need for the electric control telescopic assembly 20 to continuously apply the driving force, so that the energy consumption is effectively reduced.

[0103] Preferably, the control assembly 30 further comprises a balance elastic member 34, and the balance elastic member 34 is connected with the frame 10 and the control mechanism 31 respectively, so as to apply an assisting force to the control rod 32, so as to balance part of the driving force. That is, the balance elastic member 34 is used to apply the assisting force to the control rod 32, and the assisting force is opposite to the driving force, so that the driving force applied to the control rod 32 is weakened through the balance elastic member 34. Specifically, in this embodiment, as shown inFigure 2 As shown, the main control elastic member 33 is used to provide the downward driving force to the control rod 32, and the balance elastic member 34 is used to provide the upward assisting force to the control rod 32, and the assisting force is smaller than the driving force, so that part of the driving force can be balanced by the assisting force, and the control rod 32 receives a smaller driving force.

[0104] It can be understood that in the prior art, in order to ensure the braking effect of the electromagnetic brake, the main control elastic member is usually selected to have a larger elastic structure, so that the main control elastic member applies a larger driving force to the control rod. This also leads to a larger resistance to be overcome during unlocking, increasing the difficulty of unlocking, so that the electric control telescopic assembly needs to apply a larger driving force to the control assembly to achieve unlocking. Due to the larger driving force required for unlocking and the larger elastic force of the main control elastic member, the components are subjected to a large instantaneous force during unlocking and braking, which makes the unlocking and braking process not smooth enough, and there is also a risk of damage to the components.

[0105] In the embodiment, the balance elastic member 34 is provided, and the balance elastic member 34 applies the assisting force to the control rod 32, so that the driving force can be weakened, and the electric control telescopic assembly 20 can be unlocked by providing a smaller driving force, reducing the difficulty of unlocking, saving energy, and reducing the instantaneous force of the components during unlocking and braking, making the unlocking and braking process more stable and smooth, and reducing the risk of damage to the components.

[0106] Specifically, in the embodiment, the balance elastic member 34 is a torsion spring, which applies a torsion force to the control mechanism 31 to provide the assisting force to the control rod 32.

[0107] Preferably, the electric control telescopic assembly 20 includes a first electromagnet 21 and a second electromagnet 22. The first electromagnet 21 is installed on the frame 10, and the telescopic rod 211 of the first electromagnet is arranged corresponding to the control mechanism 31 to provide the driving force to make the control assembly 30 rotate forward. The second electromagnet 22 is installed on the frame 10, and the telescopic rod 221 of the second electromagnet is arranged corresponding to the control mechanism 31 to provide the driving force to make the control assembly 30 rotate reversely.

[0108] Wherein, the forward rotation and the reverse rotation refer to two opposite rotation directions, for example, in an embodiment, the forward rotation is the clockwise direction, and the reverse rotation is the counterclockwise direction. For example, in an embodiment, when the forward rotation is the counterclockwise direction, the reverse rotation is the clockwise direction.

[0109] Specifically, in the embodiment, when the first electromagnet 21 drives the control mechanism 31 to rotate forward to a certain position, the control rod 32 drives the brake 40 to combine with the rotor of the motor, so as to realize braking. When the second electromagnet 22 drives the control mechanism 31 to rotate reversely to a certain position, the control rod 32 drives the brake 40 to separate from the rotor of the motor, so as to realize unlocking.

[0110] That is, in the embodiment, the first electromagnet 21 and the second electromagnet 22 are arranged in the electric control telescopic assembly 20, so that the control mechanism 31 can be provided with the driving force in two different directions after being powered, so that the control mechanism 31 can rotate in two different directions, and thus the electric control telescopic assembly 20 can realize braking and unlocking.

[0111] It can be understood that in the prior art electromagnetic brake, the electromagnet can only control the brake to run in one direction quickly after being powered, and the elastic force of the elastic member is required to reset in the opposite direction, which affects the timeliness of unlocking or locking, and also limits the arrangement of components in the brake motor.

[0112] In the embodiment, the first electromagnet 21 and the second electromagnet 22 are arranged, so that the electric control telescopic assembly 20 can apply the driving force in two different directions to the control mechanism 31, so that the electric control telescopic assembly 20 can realize driving the brake 40 to brake and unlock, and better guarantee the speed and stability of braking and unlocking.

[0113] Preferably, the control mechanism 31 comprises a first adjusting seat 311, a first connecting member 312 and a second connecting member 313. The first adjusting seat 311 is rotatably installed on the frame 10, the first connecting member 312 connects the telescopic rod 211 of the first electromagnet and the first adjusting seat 311, the second connecting member 313 connects the telescopic rod 221 of the second electromagnet and the first adjusting seat 311, and the control rod 32 is connected with the first adjusting seat 311. That is, in the embodiment, the first adjusting seat 311 of the control assembly 30 is rotatably installed on the frame 10, so as to convert the rotary motion into linear motion through the first adjusting seat 311. The first connecting member 312 is directly connected with the telescopic rod 211 of the first electromagnet, and the second connecting member 313 is directly connected with the telescopic rod 221 of the second electromagnet, so that the first electromagnet 21 and the second electromagnet 22 can drive the first adjusting seat 311 to rotate more quickly after being powered, and form an integral structure between the first electromagnet 21, the second electromagnet 22 and the control mechanism 31.

[0114] It can be understood that in the prior art electromagnetic brake, the electromagnets are independent of each other, linkage cannot be formed between the electromagnets, and the control difficulty is increased. Meanwhile, the electromagnets can only control the brake piece to run in one direction quickly, and the elastic piece is used to reset in the opposite direction, which affects the timeliness of unlocking or locking, and limits the arrangement of components in the brake motor.

[0115] In the electromagnetic brake 100 provided by the embodiment, the electric control telescopic piece 20 and the control mechanism 31 form an integral structure, linkage can be formed between the first electromagnet 21 and the second electromagnet 22. The second electromagnet 22 and the first electromagnet 21 are powered separately during unlocking or braking, the control is simpler, the telescopic rod of the other electromagnet can be quickly retracted, the normal unlocking or locking is not affected, the speed and stability of unlocking and braking are better guaranteed. Meanwhile, the integral structure can be more compact and simple, and the unlocking and braking can be more rapid and convenient.

[0116] Preferably, the electric control telescopic assembly 20 further comprises an electromagnet seat 23 mounted on the frame 10, and the first electromagnet 21 and the second electromagnet 22 are respectively mounted on the electromagnet seat 23. Through this structure, the mounting positions of the first electromagnet 21 and the second electromagnet 21 can be better arranged, and the overall structure is more compact and reliable.

[0117] Preferably, the first connecting member 312 comprises a first connecting member body 3121 connected with the telescopic rod 211 of the first electromagnet and a first connecting column 3122 arranged on the first connecting member body 3121 and inserted into the first adjusting seat 311. The second connecting member 313 comprises a second connecting member body 3131 connected with the telescopic rod 221 of the second electromagnet and a second connecting column 3132 arranged on the second connecting member body 3131 and inserted into the first adjusting seat 311. Thus, when the first electromagnet 21 is powered, the first connecting member body 3121 can be moved by the extension of the telescopic rod 211 of the first electromagnet, and the first connecting column 3122 on the first connecting member body 3121 can drive the first adjusting seat 311 to rotate forward during the movement, and the rotation of the first adjusting seat 311 can also drive the telescopic rod 221 of the second electromagnet to retract correspondingly. When the second electromagnet 22 is powered, the second connecting member body 3131 can be moved by the extension of the telescopic rod 221 of the second electromagnet, and the second connecting column 3132 on the second connecting member body 3131 can drive the first adjusting seat 311 to rotate reversely during the movement, and the rotation of the first adjusting seat 311 can also drive the telescopic rod 211 of the first electromagnet to retract correspondingly. In this embodiment, the first connecting column 3122 is inserted into the first adjusting seat 311, and the second connecting column 3132 is inserted into the first adjusting seat 311, so that the non-rigid connection between the first connecting member 312, the second connecting member 313 and the first adjusting seat 311 is realized, which better guarantees the driving of the electric control telescopic assembly 20 to the control mechanism 31 and guarantees the reliability of operation.

[0118] The first adjusting seat 311 is provided with a first connecting arm 3111 and a second connecting arm 3112 located at opposite sides in the rotation direction of the first adjusting seat 311. The first connecting column 3122 is inserted into a first connecting groove 3113 of the first connecting arm 3111, and the second connecting column 3132 is inserted into a second connecting groove 3114 of the second connecting arm 3112. Thus, the control of the first connecting member 312 and the second connecting member 313 to the first adjusting seat 311 is simpler, and the overall structure is simpler and more compact.

[0119] Preferably, the first connecting groove 3113 is recessed from the outer surface 3115 of the first connecting arm towards the second connecting arm 3112, wherein the outer surface 3115 of the first connecting arm refers to the side surface of the first connecting arm 3111 away from the second connecting arm 3112. The second connecting groove 3114 is recessed from the outer surface 3116 of the second connecting arm towards the first connecting arm 3111, wherein the outer surface 3116 of the second connecting arm refers to the side surface of the second connecting arm 3112 away from the first connecting arm 3111. Thus, through such a structure, the installation between the electric control telescopic assembly 20 and the control assembly 30 can be facilitated, and the installation difficulty between the first connecting piece 312, the second connecting piece 313 and the first adjusting seat 311 is reduced.

[0120] Preferably, the control rod 32 penetrates through the first adjusting seat 311 and the frame body 10, and the main control elastic member 33 is sleeved on the control rod 32. Thus, through such a structure, the overall structure is more compact, and the stress direction can be controlled more accurately.

[0121] Preferably, the control mechanism 31 and the frame body 10 are provided with a ball 50, the frame body 10 is provided with a first ball groove 11 partially accommodating the ball 50, and the control mechanism 31 is provided with a second ball groove 35 partially accommodating the ball 50. Wherein, partially accommodating refers to that the groove depth of the ball groove is less than the diameter of the ball 50, so that the ball 50 will be partially located outside the ball groove, and the ball 50 is clamped between the control mechanism 31 and the frame body 10. The first ball groove 11 and / or the second ball groove 35 extend along the rotation direction of the control mechanism 31, and along the rotation direction of the control mechanism 31, the depth of the first ball groove 11 and / or the second ball groove 35 increases or decreases.

[0122] In the embodiment, the second adjusting seat 12 is fixedly arranged on the frame 10, the first ball groove 11 is arranged on the second adjusting seat 12, and the second ball groove 35 is arranged on the first adjusting seat 311. The first ball groove 11 and the second ball groove 35 both extend along the rotating direction of the control mechanism 31, and the depths thereof increase or decrease along the same direction. When the first adjusting seat 311 rotates to a certain position, the ball 50 is located in the region with a shallow depth in the first ball groove 11 and the second ball groove 35, at this time, the distance between the first adjusting seat 311 and the second adjusting seat 12 is expanded due to the extrusion of the ball 50, so that the first adjusting seat 311 can drive the brake 40 to separate from the rotor of the motor. When the first adjusting seat 311 rotates to another position, the ball 50 is located in the region with a deep depth in the first ball groove 11 and the second ball groove 35, so that the first adjusting seat 311 can be forced to move towards the brake 40 at this time, so that the distance between the first adjusting seat 311 and the second adjusting seat 12 is reduced, so that the first adjusting seat 311 can drive the brake 40 to combine with the rotor of the motor.

[0123] That is to say, the first adjusting seat 311 has a first rotation state and a second rotation state after relative rotation with the frame body 10. When the first adjusting seat 311 is in the first rotation state, the ball 50 is located in a region with a deeper depth in the first ball groove 11 and the second ball groove 35, the relative distance between the first adjusting seat 311 and the second adjusting seat 12 is closer, and the first adjusting seat 311 can drive the brake 40 to combine with the rotor of the motor. When the first adjusting seat 311 rotates, the ball 50 gradually moves in the first ball groove 11 and the second ball groove 35, and the ball 50 gradually moves to a region with a shallower depth in the first ball groove 11 and the second ball groove 35, so that the two points of the ball 50 abut against and limit the first adjusting seat 311 and the second adjusting seat 12 respectively, so that the ball 50 is pressed to drive the first adjusting seat 311 to move, so that the relative distance between the first adjusting seat 311 and the second adjusting seat 12 gradually becomes far, so as to realize the conversion of the rotation movement of the first adjusting seat 311 into linear movement. When the first adjusting seat 311 rotates to the second rotation state, the first adjusting seat 311 drives the control rod 32 to move, the control rod 32 drives the brake 40 to move, the brake 40 is separated from the rotor of the motor, and unlocking is realized. Of course, in other embodiments, the specific structure of the control mechanism 31 capable of rotating and moving can also adopt other required structures, such as a slope structure arranged between the first adjusting seat 311 and the second adjusting seat 12, which guides the first adjusting seat 311 to move linearly during rotation. Or a screw rod structure can be used between the first adjusting seat 311 and the second adjusting seat 12. In this embodiment, the ball groove and the ball 50 are used, so that the ball 50 and the first adjusting seat 311 and the second adjusting seat 12 are in point contact, the required machining precision is low, and the machining difficulty is effectively reduced.

[0124] Preferably, along the movable direction of the control rod 32, a thrust bearing 36 is arranged between the control mechanism 31 and the control rod 32. Thus, the control rod 32 can be better forced through the thrust bearing 36, better guaranteeing the driving of the control rod 32, further guaranteeing the smoothness in the control process, and better guaranteeing the reliability of unlocking.

[0125] Preferably, the electromagnetic brake 100 further comprises a manual control mechanism 60, the manual control mechanism 60 is rotatably installed on the frame 10, and the manual control mechanism 60 has a first rotation control state and a second rotation control state after relative rotation with the frame 10; in the first rotation control state, the manual control mechanism 60 is spaced apart from the control assembly 30; in the second rotation control state, the manual control mechanism 60 abuts and limits the control assembly 30, so that the brake piece 40 is combined or separated from the rotor of the motor. That is, the manual control mechanism 60 has at least two rotation position states, when the manual control mechanism 60 rotates to the first rotation control state, the manual control mechanism 60 does not limit the control assembly 30, and the control assembly 30 can normally operate. When the manual control mechanism 60 is forced to rotate to the second rotation control state, the manual control mechanism 60 can correspondingly abut and limit the control assembly 30, thereby changing the position state of the control assembly 30, so that the brake piece 40 is combined or separated from the rotor of the motor.

[0126] Specifically, in the embodiment, in the second rotation control state, the manual control mechanism 60 abuts and presses the first adjusting seat 311, so that the brake piece 40 is separated from the rotor of the motor. Of course, in other embodiments, in the second rotation control state, the manual control mechanism 60 can also abut and press the first adjusting seat 311, so that the brake piece 40 is combined with the rotor of the motor. In the embodiment, only the case that the manual control mechanism 60 is in the second rotation control state to separate the brake piece 40 from the rotor of the motor is described.

[0127] It can be understood that in the prior art electromagnetic brake, in the normal state, the brake piece is usually combined with the rotor of the motor, that is, in the normal state, the electromagnetic brake is usually in the braking state. At this time, if the electromagnetic brake is powered off and the control assembly cannot provide driving force, the motor will always be in the braking state and cannot operate normally. For example, when the motor is applied to a wheelchair, if the electromagnetic brake is powered off, the wheelchair will always be in the braking state and cannot move. By providing the manual control mechanism 60, when the electric control telescopic assembly 20 cannot provide driving force, the operator can manually control the manual control mechanism 60 to drive the control assembly 30 to operate, so that the brake piece 40 is separated from the rotor of the motor, and the motor can operate normally.

[0128] Preferably, the electric control telescopic assembly 20, the control assembly 30 and the brake 40 are all installed in the frame 10, so that the components can be well protected by the frame 10. The frame 10 is provided with an avoiding opening 13 extending along the rotating direction of the manual control mechanism 60. One part of the manual control mechanism 60 is installed in the frame 10, and the other part of the manual control mechanism 60 extends out of the frame 10 from the avoiding opening 13, and the manual control mechanism 60 can slide in the avoiding opening 13. That is, the extending distance of the avoiding opening 13 along the rotating direction of the manual control mechanism 60 is not less than the required rotating distance of the manual control mechanism 60, so that the inner wall of the avoiding opening 13 does not hinder the rotation of the manual control mechanism 60, and the manual control mechanism 60 can rotate relative to the frame 10 to change the rotating state.

[0129] The electromagnetic brake 100 further comprises a sealing member 70 installed at the avoiding opening 13 and connected with the manual control mechanism 60. That is, the sealing member 70 is arranged corresponding to the position of the avoiding opening 13, so that the avoiding opening 13 can be blocked by the sealing member 70, avoiding the entry of contaminants into the frame 10 from the avoiding opening 13. Meanwhile, the sealing member 70 is also connected with the manual control mechanism 60, so that when the manual control mechanism 60 rotates, the sealing member 70 can be correspondingly driven to rotate, better ensuring the sealing of the avoiding opening 13 by the sealing member 70.

[0130] It can be understood that in the prior art electromagnetic brake, in order to facilitate the operator to apply force to the manual control mechanism, the manual control mechanism needs to extend out of the frame, so that contaminants are easily introduced into the frame from the installation position of the manual control mechanism on the frame, affecting the normal operation of the electromagnetic brake and reducing the service life.

[0131] The electromagnetic brake 100 provided in the embodiment is provided with the sealing member 70, which can well seal the avoiding opening 13 and avoid the entry of contaminants into the frame 10 from the avoiding opening 13, better ensuring the normal operation of the electromagnetic brake 100 and improving the service life of the electromagnetic brake 100.

[0132] Preferably, the sealing member 70 comprises a sealing ring 71 and a sealing cover 72, the sealing ring 71 is sleeved on the frame 10, and the sealing cover 72 is connected with the sealing ring 71 and covers the part of the manual control mechanism 60 outside the frame 10. Thus, the sealing ring 71 sleeved on the frame 10 can better seal the escape port 13, and can also better avoid the escape port 13 from having gaps when the manual control mechanism 60 rotates, thereby better improving the sealing effect. At the same time, the part of the manual control mechanism 60 outside the frame 10 is sealed by the sealing cover 72, thereby further improving the sealing effect and better preventing pollutants from entering the frame 10.

[0133] Specifically, in the embodiment, the frame 10 comprises a base 14 and a shell 15 covering the outside of the base 14, the sealing ring 71 is sleeved on the base 14, and the sealing ring 71 is located between the base 14 and the shell 15, thereby better guaranteeing the sealing effect.

[0134] Preferably, the electromagnetic brake 100 further comprises a position detector 80 installed in the frame 10 to detect the first rotation control state and / or the second rotation control state of the manual control mechanism 60. Thus, the position detector 80 can better detect the current position of the manual control mechanism 60, and can better prompt the operator about the current state of the manual control mechanism 60. Specifically, in the embodiment, the position detector 80 is a travel switch, when the manual control mechanism 60 is in the second rotation control state, it will correspondingly touch the travel switch, thereby the travel switch can detect the state of the manual control mechanism 60 and real-time prompt.

[0135] Preferably, the electromagnetic brake 100 further comprises a limiting piece 90 installed in the frame 10 to abut and limit the manual control mechanism 60, so that the manual control mechanism 60 remains in the first rotation control state or the second rotation control state. Thus, when the operator finishes adjusting the manual control mechanism 60, the limiting piece 90 can maintain the adjusted state of the manual control mechanism 60, ensuring the reliability of the adjustment. At the same time, the limiting piece 90 can also provide a good feedback to the operator, that is, when the limiting piece 90 abuts the corresponding area of the manual control mechanism 60, the operator can know that the adjustment is in place. Specifically, in this embodiment, the limiting piece 90 is a spring piece structure. When the manual control mechanism 60 rotates to the first rotation control state or the second rotation control state, the limiting piece 90 buckles to the corresponding area of the manual control mechanism 60, limiting the manual control mechanism 60, and the spring piece structure can also better feedback the current position of the manual control mechanism 60, so that the operator can know whether the adjustment is in place in time.

[0136] Preferably, the manual control mechanism 60 is provided with a first buckle groove 61 and a second buckle groove 62, and the first buckle groove 61 and the second buckle groove 62 are spaced apart along the rotation direction of the manual control mechanism 60. In the first rotation control state, the limiting piece 90 abuts and buckles in the first buckle groove 61, so that the manual control mechanism 60 remains in the first rotation control state. In the second rotation control state, the limiting piece 90 abuts and buckles in the second buckle groove 62, so that the manual control mechanism 60 remains in the second rotation control state. That is, in this embodiment, the limiting piece 90 abuts and buckles in different buckle grooves on the manual control mechanism 60, so that the manual control mechanism 60 remains in the first rotation control state or the second rotation control state. Through this structure, the state after adjustment can be better maintained, and accidental rotation of the manual control mechanism 60 can be effectively avoided.

[0137] Preferably, the manual control mechanism 60 comprises a control disc 63, a control column 64 and a control handle 65, the control disc 63 is rotatably installed in the frame body 10, the control column 64 is connected with the control disc 63 to abut and limit the first adjusting seat 311. That is, in the embodiment, the abutting and limiting of the control assembly 30 by the manual control mechanism 60 is specifically realized by the control column 64, which can be correspondingly rotated with the control disc 63, so that the control assembly 30 can be correspondingly abutted and limited by the control column 64. The control handle 65 is connected with the control disc 63 and extends out of the frame body 10 through the avoiding opening 13, so that the operator can easily force the control disc 63 through the control handle 65, making the control and adjustment of the manual control mechanism 60 by the operator more simple.

[0138] It can be understood that, in order to better maintain the state of the first adjusting seat 311 after rotation, the electromagnetic brake 100 can also be provided with a state maintaining member, so that after the first adjusting seat 311 is rotated to the position, the state of the first adjusting seat 311 can be maintained by the state maintaining member, so that it is not necessary to continuously supply power to the electric control telescopic assembly 20. For example, the state maintaining member can be a pawl type limiting structure, when the electromagnetic brake 100 is in the unlocked state, the state maintaining member can correspondingly buckle the first adjusting seat 311, so that after the electric control telescopic assembly 20 is powered off, the state maintaining member can continuously force the first adjusting seat 311, maintaining the state of the first adjusting seat 311.

[0139] The electromagnetic brake 100 provided by the embodiment has low cost and can be directly adapted to existing motors.

[0140] More preferably, a power storage element can be arranged on the controller of the electromagnetic brake 100, and the power storage element can be a capacitor. Therefore, when the electromagnetic brake 100 is powered off, the power storage element can supply power to the second electromagnet 21 to realize automatic braking, better guaranteeing safety.

[0141] Embodiment two

[0142] Please refer to Figures 12 to 19 The embodiment provides an electromagnetic brake 600, which has basically the same structure as the electromagnetic brake 100 in embodiment one, and the difference lies in that:

[0143] In the embodiment, the electromagnetic brake 600 further comprises a synchronous ring 610, which is arranged between the first adjusting seat 620 and the second adjusting seat 630 and can rotate relative to the second adjusting seat 630, and the synchronous ring 610 is provided with ball holes 611 matched with the balls 640, and each ball 640 corresponds to one ball hole 611. That is, the number of the ball holes 611 is not less than the number of the balls 640, so that each ball 640 can be arranged in one ball hole 611. Wherein, the ball hole 611 matched with the ball 640 means that the ball hole 611 can accommodate part of the ball 640, and the hole wall of the ball hole 611 will not limit the normal rolling of the ball 640.

[0144] It can be understood that in the electromagnetic brake in the prior art, the synchronous rolling of multiple balls cannot be guaranteed, and in the process of rotating adjustment, the first adjusting seat is easy to be deflected, which affects the stability of transmission.

[0145] In the embodiment, the synchronous ring 610 is arranged between the first adjusting seat 620 and the second adjusting seat 630, and the balls 640 are arranged in the ball holes 611 of the synchronous ring 610. Therefore, in the process of rotating adjustment, when the first adjusting seat 620 drives the balls 640 to roll, the balls 640 can abut on the inner wall of the ball hole 611, and the synchronous ring 610 is driven to rotate synchronously by the balls 640. Because the synchronous ring 610 is driven to rotate synchronously, the synchronous ring 610 can drive other balls 640 to roll synchronously in the rotating direction of the first adjusting seat 620, so as to guarantee the synchronous rolling of multiple balls 640. That is, in the embodiment, the synchronous ring 610 can be arranged to limit multiple balls 640, and the multiple balls 640 are connected to form a whole. When one ball drives the synchronous ring 610 to rotate, the synchronous ring 610 can also drive other balls 640 to be forced, so as to ensure the synchronous rolling of multiple balls 640. Therefore, the deflection of the first adjusting seat 620 to one side can be better avoided, and the stability of transmission can be better guaranteed.

[0146] Specifically, in the embodiment, the balls 640 are four.

[0147] And, in the embodiment, the second ball groove 650 is opened in the first adjusting seat 620 and extends along the rotatable direction of the first adjusting seat 620, the second ball groove 650 comprises a first accommodating groove 651, a second accommodating groove 652 and a first transition groove 653, the recess depth of the second accommodating groove 652 is greater than the recess depth of the first accommodating groove 651. The recess depth refers to the recess distance from the outer surface of the first adjusting seat 620 to the inside. The first transition groove 653 communicates the first accommodating groove 651 and the second accommodating groove 652, that is, the first transition groove 653 is arranged between the first accommodating groove 651 and the second accommodating groove 652. The bottom wall 6531 of the first transition groove 653 is a slope, so that when the ball 640 rolls in the second ball groove 650, the ball 640 can be better guided by the bottom wall 6531 of the first transition groove. The bottom wall 6511 of the first accommodating groove 651 comprises a first stay surface 6512 connected with the bottom wall 6531 of the first transition groove, the first stay surface 6512 is inclined to the inside of the first accommodating groove 651 relative to the bottom wall 6531 of the first transition groove. That is, the first stay surface 6512 is inclined relative to the bottom wall 6531 of the first transition groove and is inclined to the direction away from the second transmission member 20. When the ball 640 rolls to the first stay surface 6512, the ball 640 can be well stayed on the first stay surface 6512.

[0148] The bottom wall 6521 of the second accommodating groove 652 comprises a second stay surface 6522 connected with the bottom wall 6531 of the first transition groove, the second stay surface 6522 is inclined to the outside of the second accommodating groove 652 relative to the bottom wall 6531 of the first transition groove. That is, the second stay surface 6522 is inclined relative to the bottom wall 6531 of the first transition groove and is inclined to the direction close to the second transmission member 20. When the ball 640 rolls to the second stay surface 6522, the ball 640 can be well stayed on the second stay surface 6522.

[0149] It can be understood that in the ball slide structure of the prior art, the bottom wall of the slide is a whole slope structure, when the ball rolls to the position in the slide, the ball is easy to roll to the original position along the slope, and cannot be well stayed in the required area, thereby affecting the position state of the first adjusting seat 620 and the stability of the transmission control.

[0150] In the embodiment, the first and second dwell surfaces 6512 and 6522 are arranged to be inclined relative to the bottom wall 6531 of the first transition groove, so that when the ball 640 rolls into the first accommodating groove 651, the first dwell surface 6512 can well receive the ball 640, avoiding the ball 640 from rolling back to the original position along the bottom wall 6531 of the first transition groove; and when the ball 640 rolls into the second accommodating groove 652, the second dwell surface 6522 can well receive the ball 640, avoiding the ball 640 from rolling back to the original position along the bottom wall 6531 of the first transition groove. That is, in the embodiment, the first and second dwell surfaces 6512 and 6522 are arranged on both sides of the bottom wall 6531 of the first transition groove, so that the ball 640 is not easy to roll back to the original position along the inclined surface after rolling into position, and the ball 640 can better stay in the required area, thereby better ensuring the position state of the first adjusting seat 620 and the stability of transmission control.

[0151] Preferably, the first ball groove 660 is arranged in the second adjusting seat 630 and extends along the rotatable direction of the first adjusting seat 620, so that the ball 640 rolls more smoothly and is better prevented from being blocked.

[0152] The first ball groove 660 includes a third accommodating groove 661, a fourth accommodating groove 662 and a second transition groove 663. The fourth accommodating groove 662 has a greater recess depth than the third accommodating groove 661. The second transition groove 663 communicates the fourth accommodating groove 662 with the third accommodating groove 661, and the bottom wall 6631 of the second transition groove 663 is an inclined surface. The bottom wall 6611 of the third accommodating groove 661 includes a third dwell surface 6612 connected with the bottom wall 6631 of the second transition groove, and the third dwell surface 6612 is inclined relative to the bottom wall 6631 of the second transition groove and towards the third accommodating groove 661. That is, the third dwell surface 6612 is inclined relative to the bottom wall 6631 of the second transition groove and inclined towards the direction away from the first adjusting seat 620. When the ball 640 rolls to the third dwell surface 6612, the ball 640 can well stay on the third dwell surface 6612.

[0153] The bottom wall 6621 of the fourth accommodating groove 662 comprises a fourth stay surface 6621 connected with the bottom wall 6631 of the second transition groove, and the fourth stay surface 6621 is inclined outwardly of the fourth accommodating groove 662 relative to the bottom wall 6631 of the second transition groove. That is, the fourth stay surface 6621 is inclined relative to the bottom wall 6631 of the second transition groove and is inclined towards the first adjusting seat 620. When the ball 640 rolls to the fourth stay surface 6621, the ball 640 can be well stayed on the fourth stay surface 6621.

[0154] In the embodiment, the second ball groove 650 and the first ball groove 660 both extend along the rotatable direction of the first adjusting seat 620. Of course, in other embodiments, any one of the second ball groove 650 and the first ball groove 660 can extend along the rotatable direction of the first adjusting seat 620.

[0155] Preferably, the electromagnetic brake 600 further comprises a position maintaining mechanism 670, which is provided with two groups in the embodiment, and is divided into a first position maintaining mechanism 671 and a second position maintaining mechanism 672.

[0156] The first position maintaining mechanism 671 is arranged on the frame body and corresponds to the first adjusting seat 620 to abut against the first adjusting seat 620 to maintain the state of the first adjusting seat 620 after rotation.

[0157] Specifically, two limiting grooves 621 are arranged on the first adjusting seat 620 along the rotatable direction, and the first position maintaining mechanism 671 is correspondingly clamped in one of the limiting grooves 621 when the first adjusting seat 620 is rotated to a position, so as to maintain the state of the first adjusting seat 620 after rotation. For example, when the ball 640 is located in the first accommodating groove 651, the first position maintaining mechanism 671 is correspondingly clamped in one of the limiting grooves 621, so as to maintain the state of the first adjusting seat 620; and when the ball 640 is located in the second accommodating groove 652, the first position maintaining mechanism 671 is correspondingly clamped in the other limiting groove 621, so as to maintain the state of the first adjusting seat 620.

[0158] More specifically, in the embodiment, the first position maintaining mechanism 671 is a resilient structure, which comprises a resilient component 6711 and a limiting ball 6712 connected with the resilient component 6711, and a spring is arranged in the resilient component 6711. Thus, when the first adjusting seat 620 is rotated under force, the resilient component 6711 can be correspondingly pressed, and the limiting ball 6712 can be retracted. When the rotation is completed, the resilient component 6711 can drive the limiting ball 6712 to extend and be clamped in the limiting groove 621, so as to maintain the state of the first adjusting seat 620 after rotation. Of course, in other embodiments, the first position maintaining mechanism 671 can also adopt other limiting structures, such as a resilient sheet structure.

[0159] The second position maintaining mechanism 672 is arranged on the frame body and corresponds to the electric control telescopic component, so as to adsorb the telescopic rod of the first electromagnet and / or the telescopic rod of the second electromagnet, so as to maintain the state of the first adjusting seat 620 after rotation.

[0160] Specifically, in the embodiment, the second position maintaining mechanism 672 is a magnet.

[0161] More specifically, two second position maintaining mechanisms 672 are arranged, one of which is arranged at the head of the second electromagnet, and the other of which is arranged at the tail of the first electromagnet. Thus, when the telescopic rod of the second electromagnet extends, the second position maintaining mechanism 672 can correspondingly adsorb the head of the telescopic rod of the second electromagnet. After the second electromagnet loses power, the telescopic rod of the second electromagnet can be prevented from retracting. In the embodiment, the first electromagnet and the second electromagnet are connected to the same component to form a connecting rod mechanism, so that when the telescopic rod of the second electromagnet extends, the telescopic rod of the first electromagnet can be correspondingly retracted. The other second position maintaining mechanism 672 can correspondingly adsorb the tail of the first electromagnet, so as to better prevent the telescopic rod of the second electromagnet from retracting. In this way, through the limitation of the second position maintaining mechanism 672 to the position of the electric control telescopic component, the state of the first adjusting seat 620 can be maintained. Even if the electric control telescopic component loses power, through the cooperation of the second position maintaining mechanism 672 and other components in the electromagnetic brake 600, the electromagnetic brake 600 can maintain the unlocked state, and does not need to be maintained by continuously supplying power to the electric control telescopic component, so as to effectively save energy.

[0162] Of course, in other embodiments, according to actual needs, only the first position maintaining mechanism 671 or the second position maintaining mechanism 672 can be arranged in the electromagnetic brake 600.

[0163] Embodiment three

[0164] Please refer to Figures 1 to 3The embodiment provides a brake motor, which comprises a motor 200 and the electromagnetic brake 100 (or the electromagnetic brake 600) described in the first embodiment, and the frame body 10 is installed on the stator of the motor 200.

[0165] Specifically, in the embodiment, the motor 200 is an inner rotor motor, that is, the shaft of the motor 200 is a rotatable structure, the rotating shaft 210 of the motor 200 is provided with a friction piece 220 used for combining with the brake piece 40, and the frame body 10 is installed on the shell 230 of the motor 200. Thus, the frictional resistance generated between the brake piece 40 and the friction piece 220 is realized by the combined contact of the brake piece 40 and the friction piece 220, so that the brake effect on the motor 200 is better guaranteed.

[0166] Embodiment four

[0167] Please refer to Figures 20 to 25 The embodiment provides a brake motor, which comprises a motor 300 and an electromagnetic brake 400, the structure of the electromagnetic brake 400 is basically same with the structure of the electromagnetic brake 100 (or the electromagnetic brake 600) described in the first embodiment, and the difference is that:

[0168] In the embodiment, the motor 300 is an outer rotor motor, that is, the shaft 310 of the motor 300 is a fixed structure, and the shell 320 of the motor 300 is a rotatable structure. The frame body 410 is installed on the shaft 310, and the control assembly 420 can be rotatably and movably installed on the shaft 310.

[0169] And in the embodiment, the manual control mechanism 500 is arranged on the end cover 340.

[0170] Specifically, the rotor 350 of the motor 300 is rotatably installed on the shaft 310, and the rotor 350 is correspondingly arranged on the stator 360 fixed on the shaft 310. The shell 320 is connected with the rotor 350, and the shell 320 is arranged outside the stator 360. The end cover 340 is connected to one end of the shell 320, and the electromagnetic brake 400 is located in the space surrounded by the end cover 340. Thus, the stability of the whole brake motor can be better guaranteed, and the normal operation of the components in the brake motor can be better avoided from being affected by pollution.

[0171] Preferably, the inner side of the end cover 340 is provided with a friction member 330, which is used to combine with the brake member 430. That is, the setting position of the friction member 330 corresponds to the brake member 430, when the middle part of the electromagnetic brake 400 drives the brake member 430 to move and combine with the rotor 350, the brake member 430 specifically combines with the friction member 330 to achieve braking. Through the cooperation between the friction member 330 and the brake member 430, the braking effect can be better guaranteed.

[0172] Preferably, the manual control mechanism 500 includes a manual control member 51, a manual driving member 52 and an elastic member 53. The manual control member 51 can be rotatably and movably installed on the end cover 340. The manual driving member 52 is connected with the manual control member 51, and the manual control member 51 can drive the manual driving member 52 to move, so that the manual driving member 52 extrudes the brake member 430 to separate the brake member 430 from the friction member 330. The elastic member 53 is connected with the end cover 340 and the manual driving member 52 respectively, so as to apply a pushing force to the manual driving member 52 to separate the manual driving member 52 from the brake member 430.

[0173] That is, in the embodiment, the manual control member 51 can convert the rotary motion into linear motion. When the operator controls the manual control member 51 to rotate, the manual control member 51 can drive the manual driving member 52 to move, so that the manual driving member 52 extrudes the brake member 430 (or separates from the brake member 430), so that the rotation of the manual control member 51 can be controlled manually to control the position of the brake member 430, and manual unlocking can be achieved.

[0174] Specifically, the manual control member 51 has a first control state and a second control state after the end cover 340 rotates relatively. In the first control state, the elastic member 53 is stretched to make the manual driving member 52 spaced apart from the brake member 430. In the second control state, the manual control member 51 presses the manual driving member 52, and the elastic member 53 is compressed to make the manual driving member 52 press the brake member 430, so that the brake member 430 is separated from the friction member 330. That is, the manual control member 51 has at least two rotating position states. When the manual control member 51 rotates to the first control state, the manual control member 51 does not press the manual driving member 52, so that the manual driving member 52 can be spaced apart from the brake member 430 under the elastic force of the elastic member 53. In this state, the manual control mechanism 500 does not affect the electromagnetic brake 400, so that the electromagnetic brake 400 can operate normally. When the manual control member 51 rotates to the second control state, the manual control member 51 presses the manual driving member 52, so that the elastic member 53 is compressed, and the manual driving member 52 is moved towards the brake member 430, so that the manual driving member 52 abuts and presses the brake member 430, so that the brake member 430 is moved to separate the brake member 430 from the friction member 330, so that the rotor 350 can be unlocked manually, and the brake motor can operate normally.

[0175] It can be understood that in the prior art brake motor, when the power supply of the electromagnetic brake is exhausted or fails, the brake member cannot be controlled to move, so that the rotor cannot be unlocked, and the brake motor is always in a braking state, which affects normal use.

[0176] In the embodiment, the manual control mechanism 500 is arranged, so that when the power supply of the electromagnetic brake 400 is exhausted or fails, the operator can control the manual control member 51 to drive the manual driving member 52 to move, so as to drive the brake member 430 to separate the brake member 430 from the friction member 330, and ensure the normal operation of the brake motor. The elastic member 53 is arranged in the manual control mechanism 500, so that when the brake member 430 does not need to be controlled manually, the elastic member 53 can drive the manual driving member 52 to move to the corresponding position, and does not affect the normal use of the electromagnetic brake 400.

[0177] Preferably, the manual control mechanism 500 further comprises a cover 54 fixed to the outer side of the end cover 340, and a rolling ball 55 arranged between the cover 54 and the manual control member 51, the cover 54 is provided with a first rolling ball groove 541 partially accommodating the rolling ball 55, the manual control member 51 is provided with a second rolling ball groove 511 partially accommodating the rolling ball 55, the first rolling ball groove 541 and / or the second rolling ball groove 511 extends along the rotation direction of the manual control member 51, and along the rotation direction of the manual control member 51, the depth of the first rolling ball groove 541 and / or the second rolling ball groove 511 increases or decreases. Specifically, in the embodiment, only the second rolling ball groove 511 extends along the rotation direction of the manual control member 51, and the depth increases or decreases. Thus, when the manual control member 51 is rotated to the first control state, the rolling ball 55 is located in the area with deeper depth in the second rolling ball groove 511, and the distance between the manual control member 51 and the cover 54 is shorter. When the manual control member 51 is rotated to the second control state, the rolling ball 55 is located in the area with shallower depth in the second rolling ball groove 511, and the rolling ball 55 presses the manual control member 51, so that the manual control member 51 presses the manual driving member 52 to separate the brake member 430 from the friction member 330.

[0178] Similarly, in other embodiments, only the first rolling ball groove 541 can extend along the rotation direction of the manual control member 51, and the depth increases or decreases. Or both the first rolling ball groove 541 and the second rolling ball groove 511 can extend along the rotation direction of the manual control member 51, and the depth increases or decreases. And the specific structure that the manual control member 51 can be rotationally moved and installed on the end cover 340 can also adopt other required structures, such as a slope structure arranged between the manual control member 51 and the end cover 340, which guides the linear movement of the manual control member 51 during rotation. Or a screw rod structure can be adopted between the manual control member 51 and the end cover 340. In the embodiment, the rolling ball groove and the rolling ball 55 are adopted, so that the rolling ball 55 has point contact with the manual control member 51 and the cover 54, the required machining precision is low, and the machining difficulty is effectively reduced.

[0179] Preferably, the manual control mechanism 500 further comprises a torsion spring 56 connected between the end cover 340 and the manual control member 51, so as to apply a boost force to the manual driving member 52 to balance part of the pushing force.

[0180] It can be understood that when the operator needs to use the manual control member 51, rotating the manual control member 51 to unlock the brake member 430 needs to overcome the resistance exerted by the electromagnetic brake 400 and the elastic member 53. In this embodiment, the torsional spring 56 is arranged to provide a certain boost force to balance the resistance exerted by the electromagnetic brake 400 and the elastic member 53, so that the operator can rotate the manual control member 51 with a smaller force, which facilitates the use of the operator and makes the operation process more stable and smooth.

[0181] In order to avoid accidental rotation of the manual control member 51 and better maintain the first control state or the second control state of the manual control member 51, a buckle structure can be arranged on the end cover 340, so as to better maintain the first control state or the second control state by buckling the corresponding area of the manual control member 51 through the corresponding buckle structure. For example, a spring structure can be arranged on the end cover 340, and two clamping grooves can be arranged on the manual control member 51. When the manual control member 51 is rotated to different states, the spring structure is buckled in the corresponding clamping groove to maintain the state of the manual control member 51.

[0182] Preferably, the manual control member 51 is located outside the end cover 340, and a part of the manual driving member 52 is located outside the end cover 340, and the other part of the manual driving member 52 penetrates the end cover 340 to press the brake member 430. Through this structure, the operator can conveniently control the force of the manual control member 51, and the reliability of the overall structure is better guaranteed.

[0183] Preferably, the manual driving member 52 includes a plate body 521 and a driving column 522. The plate body 521 is fixedly connected with the manual control member 51, one end of the driving column 522 is connected with the plate body 521, the other end of the driving column 522 penetrates the end cover 340 to press the brake member 430, and the elastic member 53 is connected with the plate body 521 and the end cover 340 at both ends. Through this structure, the manual control mechanism 500 can better press and push the brake member 430. More preferably, a plurality of driving columns 522 are arranged in an annular array on the plate body 521, so as to better balance the force exerted by the driving column 522 on the brake member 430 and avoid deflection of the brake member 430 after being stressed. Specifically, in this embodiment, three driving columns 522 are arranged.

[0184] Preferably, a speed reducer 370 is arranged between the rotor 350 and the housing 320.

[0185] Embodiment five

[0186] The embodiment provides an electric vehicle, which comprises a vehicle body and a brake motor as described in the embodiment three or the embodiment four, and the brake motor is installed on a wheel body of the vehicle body. Specifically, the electric vehicle can be specifically an electric wheelchair, an electric bicycle, an electric moped or the like small electric vehicle.

[0187] The above only describes the embodiments of the present application, and it should be pointed out that, for those skilled in the art, improvements can be made without departing from the concept of the present application, but these all belong to the protection scope of the present application.

Claims

1. An electromagnetic brake, characterized by The electric control telescopic component is installed on the frame body. The control component is rotatably installed on the frame body. The brake is installed on the control component. The telescopic rod of the electric control telescopic component is arranged corresponding to the control component to provide driving force for rotating the control component. The control component includes a control mechanism and a control rod.

2. The electromagnetic brake of claim 1, wherein, The control mechanism is rotatably installed on the frame body. The control rod is connected with the control mechanism and linearly moves under the driving of the control mechanism. The brake is installed on the control rod. The telescopic rod of the electric control telescopic component is arranged corresponding to the control mechanism. The control component further includes a main control elastic member.

3. The electromagnetic brake of claim 2, wherein, The main control elastic member is connected with the frame body and the control rod respectively to apply driving force to the control rod to combine the brake with the rotor of the motor. The control component further includes a balance elastic member.

4. The electromagnetic brake of claim 3, wherein, The balance elastic member is connected with the frame body and the control mechanism respectively to apply auxiliary force to the control rod to balance part of the driving force. The electromagnetic brake further includes a position maintaining mechanism.

5. The electromagnetic brake of claim 4, wherein, The position maintaining mechanism is arranged on the frame body and arranged corresponding to the control mechanism to abut against the control mechanism to maintain the state of the control mechanism after rotation. The electromagnetic brake further includes a position maintaining mechanism. The position maintaining mechanism is arranged on the frame body and arranged corresponding to the control mechanism to abut against the control mechanism to maintain the state of the control mechanism after rotation.

6. The electromagnetic brake of claim 2, wherein, The electric control telescopic component includes a first electromagnet and a second electromagnet. The first electromagnet is installed on the frame body, and the telescopic rod of the first electromagnet is arranged corresponding to the control mechanism to provide driving force for forward rotation of the control component. The second electromagnet is installed on the frame body, and the telescopic rod of the second electromagnet is arranged corresponding to the control mechanism to provide driving force for reverse rotation of the control component.

7. The electromagnetic brake of claim 6, wherein, The control mechanism includes a first adjusting seat, a first connecting member and a second connecting member. The first adjusting seat is rotatably installed on the frame body. The first connecting member connects the telescopic rod of the first electromagnet with the first adjusting seat. The second connecting member connects the telescopic rod of the second electromagnet with the first adjusting seat. The control rod is connected with the first adjusting seat.

8. The electromagnetic brake of claim 7, wherein, The first connecting member includes a first connecting member body and a first connecting column, the first connecting member body is connected with the telescopic rod of the first electromagnet, the first connecting column is arranged on the first connecting member body and inserted into the first adjusting seat. The second connecting member includes a second connecting member body and a second connecting column, the second connecting member body is connected with the telescopic rod of the second electromagnet, the second connecting column is arranged on the second connecting member body and inserted into the first adjusting seat.

9. The electromagnetic brake of claim 8, wherein, The first adjusting seat is provided with a first connecting arm and a second connecting arm, and the first connecting arm and the second connecting arm are located at opposite sides along the rotating direction of the first adjusting seat; The first connecting column is inserted into the first connecting groove of the first connecting arm; The second connecting column is inserted into the second connecting groove of the second connecting arm.

10. The electromagnetic brake of claim 9, wherein, The first connecting groove is recessed from the outer surface of the first connecting arm towards the second connecting arm; The second connecting groove is recessed from the outer surface of the second connecting arm towards the first connecting arm.

11. The electromagnetic brake of claim 2, wherein, The control mechanism and the frame body are provided with balls, the frame body is provided with a first ball groove for accommodating the balls, the control mechanism is provided with a second ball groove for accommodating the balls, the first ball groove and / or the second ball groove extend along the rotating direction of the control mechanism, and the depth of the first ball groove and / or the second ball groove increases or decreases along the rotating direction of the control mechanism.

12. The electromagnetic brake of claim 11, wherein, The first ball is provided with at least two first balls, and the adjacent two first balls are spaced apart, and each first ball is provided with a first ball groove and a second ball groove. The electromagnetic brake further comprises a synchronous ring, the synchronous ring is arranged between the control mechanism and the frame body, and the synchronous ring can rotate relative to the frame body, the synchronous ring is provided with a ball hole matched with the first ball, and each first ball is provided with a ball hole.

13. The electromagnetic brake of claim 11, wherein, The first ball groove comprises a first accommodating groove, a second accommodating groove and a first transition groove, the recess depth of the second accommodating groove is greater than the recess depth of the first accommodating groove, the first transition groove communicates the first accommodating groove and the second accommodating groove, the bottom wall of the first transition groove is inclined, the bottom wall of the first accommodating groove comprises a first stay surface connected with the bottom wall of the first transition groove, the first stay surface is inclined towards the first accommodating groove relative to the bottom wall of the first transition groove, the bottom wall of the second accommodating groove comprises a second stay surface connected with the bottom wall of the first transition groove, and the second stay surface is inclined towards the second accommodating groove relative to the bottom wall of the first transition groove. And / or, the second ball groove comprises a third accommodating groove, a fourth accommodating groove and a second transition groove, the recess depth of the fourth accommodating groove is greater than the recess depth of the third accommodating groove, the second transition groove communicates the fourth accommodating groove and the third accommodating groove, the bottom wall of the second transition groove is inclined, the bottom wall of the third accommodating groove comprises a third stay surface connected with the bottom wall of the second transition groove, the third stay surface is inclined towards the third accommodating groove relative to the bottom wall of the second transition groove, the bottom wall of the fourth accommodating groove comprises a fourth stay surface connected with the bottom wall of the second transition groove, and the fourth stay surface is inclined towards the fourth accommodating groove relative to the bottom wall of the second transition groove.

14. The electromagnetic brake of claim 2, wherein, The control mechanism and the control rod are provided with a thrust bearing along the movable direction of the control rod.

15. The electromagnetic brake of claim 1, wherein, The manual control mechanism is further provided. The manual control mechanism is rotatably installed on the frame body, and has a first rotation control state and a second rotation control state after relative rotation with the frame body; in the first rotation control state, the manual control mechanism is spaced apart from the control assembly; in the second rotation control state, the manual control mechanism abuts against and limits the control assembly, so as to combine or separate the brake piece and the rotor of the motor.

16. The electromagnetic brake of claim 15, wherein, The electric control telescopic assembly, the control assembly and the brake piece are all installed in the frame body; The frame body is provided with an avoiding opening extending through the frame body along the rotation direction of the manual control mechanism; Part of the manual control mechanism is installed in the frame body, and the other part of the manual control mechanism extends out of the frame body from the avoiding opening, and the manual control mechanism can slide in the avoiding opening; The electromagnetic brake further comprises a sealing member, which is installed at the avoiding opening and connected with the manual control mechanism.

17. The electromagnetic brake of claim 16, wherein, The sealing member comprises a sealing ring and a sealing cover; The sealing ring is sleeved on the frame body; The sealing cover is connected with the sealing ring and covers the part of the manual control mechanism located outside the frame body.

18. The electromagnetic brake of claim 16, wherein, Further comprising a position detector; The position detector is installed in the frame body to detect the first rotation control state and / or the second rotation control state of the manual control mechanism.

19. The electromagnetic brake of claim 16, wherein, Further comprising a limiting member; The limiting member is installed in the frame body to abut against and limit the manual control mechanism, so as to keep the manual control mechanism in the first rotation control state or the second rotation control state.

20. A brake motor characterized by, The motor and the electromagnetic brake according to any one of claims 1 to 19 are comprised; The frame body is installed on the stator of the motor.

21. A brake motor according to claim 20 wherein, The motor is an inner rotor motor, the frame body is installed on the shell of the motor, and the motor is provided with a friction piece on the rotation shaft to combine with the brake piece.

22. An electric vehicle characterized by comprising: The brake motor according to any one of claims 20 and 21 is comprised; The brake motor is installed on the wheel body of the vehicle body.

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