1202 results about "Brushless motors" patented technology

The invention relates to the technical field of motor control, discloses a direct current brushless motor control method and system based on current prediction, and aims to solve the problems of large torque ripple, low efficiency and poor stability caused by current loop lag in the prior art. The method comprises the following steps: acquiring a motor operation state signal in real time; determining a sector and an electrical angular velocity based on the rotor position and the rotational speed; inputting related parameters into the mixed current prediction model to obtain a three-phase current prediction value of the next period; a prediction error is calculated in combination with a current instruction, and an optimal voltage vector enabling a cost function to be minimum is solved through a model prediction control algorithm; and finally, a space vector pulse width modulation signal is generated to drive an inverter. According to the method, advanced control is realized by fusing a physical model and a data-driven prediction mechanism, the torque ripple is remarkably reduced, and the energy efficiency and robustness are improved.

The invention discloses a self-adaptive brushless motor control method and system, and relates to the field of intelligent control, and the method comprises the steps: collecting the original data of the operation state of a motor through a sensor group, and carrying out the preprocessing; time-varying parameter identification is completed through combination of an extended Kalman filtering algorithm and a radial basis function neural network, an evaluation index system is constructed based on an analytic hierarchy process to obtain a comprehensive evaluation value, and a related trend is predicted through a long and short-term memory neural network; constructing a multi-modal control strategy library, determining an adaptive strategy, optimizing core parameters by using an improved particle swarm optimization algorithm, generating a control instruction, and outputting a corresponding current through a power driving module; and monitoring motor parameters in real time, comparing with a control target value, calculating deviation, correcting an identification result, adjusting a strategy threshold value, and updating and optimizing an objective function. The method has the advantages that by accurately sensing the state of the motor, dynamically adapting the control strategy and optimizing parameters in real time, it is ensured that the motor stably and efficiently operates under the complex working condition, and the characteristics of energy conservation and long service life are achieved.

The utility model relates to the technical field of motors, in particular to a coreless motor with a split type Hall plate, which comprises a motor body and the split type Hall plate arranged in the motor body. The split type Hall plate comprises a winding leading-out PCB, a connecting support and a Hall plate, the winding leading-out PCB is fixedly connected in the motor body, the Hall plate is connected to the connecting support, and the connecting support is connected to the winding leading-out PCB. Compared with the prior art, the coreless motor with the split type Hall plate can effectively solve the problems that the Hall plate of the existing coreless brushless motor has a short circuit risk of scratching a coil lead in alignment and is inconvenient to maintain.

The utility model discloses a brushless motor load detection device, and specifically relates to the motor load detection device technology field, the brushless motor load detection device comprises a control panel, a load assembly, a torque sensor and a limiting mechanism, the side surface of the control panel is provided with the load assembly, and one side of the load assembly far away from the control panel is provided with the torque sensor; a torque sensor is arranged on the load assembly, a limiting mechanism is placed on the side, away from the load assembly, of the torque sensor and comprises a clamping assembly, a moving assembly and a sliding assembly, the moving assembly is installed above the sliding assembly, the clamping assembly is installed above the moving assembly, and all the assemblies can be controlled and monitored in a centralized mode through a control panel; the automatic detection process and data recording are realized, and the working efficiency and the accuracy of measured data are improved.

The present application relates to the technical field of washing machines, and specifically discloses a permanent magnet brushless motor and a washing machine. The permanent magnet brushless motor comprises a rotor iron core, a stator iron core, and a plug-in assembly; the stator iron core is sleeved on the rotor iron core; the rotor iron core is provided with permanent magnets at intervals in the circumferential direction; the stator iron core is provided with windings at intervals in the circumferential direction; the plug-in assembly is connected to the windings so as to energize the windings; the stator iron core has a plurality of mounting portions; each mounting portion protrudes from the outer side wall of the stator iron core in a direction moving away from the rotor iron core; the outer side wall of the stator iron core comprises straight-line portions and arc-shaped portions; each arc-shaped portion is connected between a mounting portion and a straight-line portion. By adjusting the shape of the outer side wall of the stator iron core, the outer side wall of the stator iron core can adapt to the path of magnetic induction lines, and the magnetic induction lines will not extend to the mounting portions so as to prevent components such as screws at the mounting portion from interfering with the magnetic induction lines; in addition, compared with conventional stator iron core structures, the stator iron core in the present application uses less material, thereby achieving weight reduction.

The invention discloses a brushless motor control system and control method, and belongs to the technical field of motor control and driving. Comprising a real-time detection module, a control, regulation and control analysis module and a self-adaptive compensation module, multi-source operation data of the brushless motor are collected in real time, the control, regulation and control analysis module carries out depth correlation analysis, potential characteristics such as parameter sensitivity, observer coupling degree and stability attenuation index are mined, potential influences are quantified through analog simulation, and a comprehensive influence value is obtained. And the self-adaptive compensation module intelligently selects a compensation type according to the numerical value, calculates an accurate compensation data value, and performs dynamic closed-loop correction on controller parameters. According to the method, the problems of insufficient adaptive capacity and compensation lag caused by difficulty in coping with parameter time variation and potential coupling in the prior art are solved, the conversion from passive response to active prevention is realized, and the robustness, the control precision and the long-term operation stability under complex working conditions are improved.

The invention relates to the technical field of automation control, and discloses a brushless motor energy-saving control adjustment method and system, a controller and a storage medium, and the method comprises the following steps: S1, collecting the operation state information of a motor: collecting the operation state information, including current, voltage, temperature and load data, of the brushless motor in real time; s2, dynamic modeling and numerical solution: constructing a dynamic model of the brushless motor system based on the acquired running state information, and modeling by adopting a high-order differential equation set; s3, constructing a control cost function; s4, deducing an optimal control strategy; s5, approximately solving a control strategy; s6, adjusting and executing control parameters; and S7, performing feedback and parameter correction. By introducing the low-pass filter, the control change rate constraint and the rolling optimization mechanism, the dynamic closed-loop control effect of more stable control, more accurate feedback and more synchronous response is realized.

The present invention discloses a dual-motor coaxial different-direction dual-propeller structure of an electric paramotor. The structure comprises a cylindrical mounting shaft with a central hole inside, wherein a first brushless motor is fixedly sleeved on the mounting shaft; a first blade assembly is rotationally sleeved on the mounting shaft; a second brushless motor is fixedly sleeved on the mounting shaft; a second blade assembly is rotationally sleeved on the mounting shaft; the first blade assembly is in transmission connection with the first brushless motor; the second blade assembly is in transmission connection with the second brushless motor; and during flight, the first brushless motor and the second brushless motor respectively drive the first blade assembly and the second blade assembly to rotate in opposite directions.

The invention discloses a brushless motor rotor angle determination method and device, equipment and a storage medium. The method comprises the following steps: synchronously acquiring original angle data of a Hall sensor, an incremental encoder and a back electromotive force observation module; respectively determining confidence coefficients of the Hall sensor, the incremental encoder and the back electromotive force observation module according to the rotating speed of the rotor, and performing weighted fusion on the original angle data of the Hall sensor, the incremental encoder and the back electromotive force observation module to obtain an initial fusion angle; based on the motor temperature, the motor phase current and the rotor speed, calculating a temperature drift compensation angle through a segmented temperature drift coupling model, and compensating the initial fusion angle according to the temperature drift compensation angle to obtain a temperature drift compensated angle; and inputting the temperature drift compensated angle into an extended Kalman filter for state estimation and filtering to obtain a rotor angle estimation value at the current moment. By means of the method, high-precision real-time calculation of the rotor angle within the wide temperature range and the full rotating speed range can be achieved.

One aspect of the present disclosure provides an electric work machine including a brushless motor, a drive circuit, and a control circuit. The control circuit executes a driving operation, a braking operation, and a switching operation. In the driving operation, the brushless motor is rotated based on a back-EMF of the brushless motor. In the braking operation, a switch pair of six switches in the drive circuit is turned on, and the other four switches are turned off. The switching operation is performed during the braking operation. The switching operation includes switching the switch pair. In the switching operation, an off-target switch is turned off based on an electric current flowing through the off-target switch satisfying an off-requirement.

The invention relates to the technical field of motor driving, and discloses a brushless motor non-inductive FOC driving method and device, and the method comprises the steps: collecting a first three-phase stator current and a bus voltage of a brushless motor, and calculating a rotor position estimation value; performing coordinate transformation on the first three-phase stator current to obtain a first d-axis actual current and a first q-axis actual current, and calculating a first d-axis current error and a first q-axis current error; calculating a d-axis first-order integral value, a d-axis double-integral accumulated value, a q-axis first-order integral value and a q-axis double-integral accumulated value, and constructing a d-axis double-integral sliding mode surface and a q-axis double-integral sliding mode surface; according to the method, a d-axis compensation voltage instruction is generated based on the d-axis double-integral sliding mode surface, a q-axis compensation voltage instruction is generated based on the q-axis double-integral sliding mode surface, the d-axis compensation voltage instruction and the q-axis compensation voltage instruction are applied to the brushless motor, the problem of magnetic field orientation deviation caused by position estimation lag in non-inductive FOC driving is solved, and the output efficiency of the motor is improved.

The invention relates to the technical field of handheld gun drills, and discloses a brushless motor driven pistol drill which comprises a shell, the inner wall of the shell is fixedly connected with a brushless motor, the inner wall of the shell is rotatably connected with driving teeth through a bearing, a buffer mechanism is arranged in the shell, the buffer mechanism comprises a driving rod, and the driving rod is fixedly connected with the brushless motor. The outer wall of the side, close to the driving teeth, of the driving rod is fixedly connected with the inner wall of the driving teeth, the outer wall of the driving rod is connected with a hinged plate through a rotating shaft hinge, the other end of the hinged plate is fixedly connected with the outer wall of the connecting rod through a rotating shaft, and the inner wall of the driving rod is fixedly connected with an elastic push rod. And the other end of the elastic push rod is fixedly connected with the inner wall of the connecting rod. According to the handheld gun drill, the buffering mechanism is arranged to release reverse twisting force generated when the drill bit drills holes, the situation that the temperature of the brushless motor is increased due to the fact that instantaneous resistance of the brushless motor is increased is prevented, and the stability of the handheld gun drill in the working process is improved.

The invention provides a high-efficiency terminal point automatic stop sample pretreatment and adhesive film impurity immersion speed rate tester, and belongs to the field of photovoltaic technology. An efficient terminal point automatic stop sample pretreatment and adhesive film impurity immersion speed increase tester is characterized by comprising an instrument bin, a direct-current brushless motor is fixedly connected in the instrument bin, a sample disc is fixedly connected to an output shaft of the direct-current brushless motor, a plurality of sample bottles are arranged on the sample disc, sensors are arranged in the sample bottles, and the sensors are connected with the direct-current brushless motor. A guide rail is arranged in the instrument bin, a first stepping motor is connected to the guide rail in a sliding mode, a second stepping motor driving the first stepping motor to move is arranged in the instrument bin, a liquid inlet needle disc is fixedly connected to an output shaft of the first stepping motor, and a plurality of liquid inlet needles are arranged on the liquid inlet needle disc. The method has the advantages that full-automatic glue film extraction operation can be achieved, automatic starting and stopping are achieved, the extraction end point is monitored in real time, excessive extraction time is shortened, and efficiency is improved.

The invention provides a brushless motor stator spot welding device. The brushless motor stator spot welding device comprises a machine table, a driving assembly, an execution assembly, a spot welding assembly, a control assembly and an identification assembly. The driving assembly and the spot welding assembly are both installed on the machine table, the execution assembly is arranged on the machine table in a sliding mode and connected with the driving assembly, and the driving assembly drives the execution assembly to reciprocate in the direction close to or away from the spot welding assembly. A bearing table is arranged at one end of the execution assembly and is used for bearing the stator and driving the stator to rotate; the recognition assembly is arranged on one side of the execution assembly, the recognition range covers the bearing table, and stator wire end information can be collected and recognition signals can be output; the spot welding assembly is used for performing spot welding on the stator wire end on the bearing table. The control assembly is in communication connection with the recognition assembly, the driving assembly and the spot welding assembly and can receive and process the recognition signals to judge whether the stator wire heads are single wire heads or double wire heads, matched welding parameters are called based on results, and then the spot welding assembly is controlled to complete spot welding.

This utility model discloses a brushless motor, including a housing, a rotor winding, a stator winding, a first balance block, a second balance block, a motor shaft, and several fan blades. The rotor winding is disposed inside the housing. The stator winding is disposed on the inner side wall of the housing and surrounds the rotor winding, and the stator winding can be connected to an external driver. The first balance block and the second balance block are respectively disposed on both sides of the rotor winding. The fan blades are integrally formed with the first balance block or the second balance block. The motor shaft passes through the first balance block, the rotor winding, and the second balance block. By integrally forming the fan blades and balance blocks through the above structure, the internal structure of the motor is greatly simplified while ensuring the stability of motor operation, which not only reduces production costs but also reduces assembly costs, thus meeting the usage requirements.

The invention discloses a brushless motor coil winding method, and the method comprises the steps: S1, enabling a stator to be installed in a loading rotating rod, enabling a rotating rod rotating assembly to drive the loading rotating rod to rotate, and enabling the stator to be located and locked on the loading rotating rod through a stator locking assembly; s2, the sliding assembly drives the loading rotating rod and the stator to move to the arc-shaped baffle assembly, and one no-load line palm of the stator is made to abut against the winding assembly through the arc-shaped baffle assembly; s3, the winding driving assembly drives the winding assembly to work, so that the winding assembly winds the wire palm, and the winding assembly stops winding the wire palm after winding the wire for a preset number of turns; s4, the rotating rod rotating assembly drives the loading rotating rod to rotate, the adjacent no-load line palms abut against the winding assembly, the step S3 is executed, and the step S5 is executed until winding of all the line palms of the stator is completed; and S5, the sliding assembly drives the loading rotating rod, the stator and the stator locking assembly to move forwards to return to the stator loading position, the stator is waited to be replaced, and the problem that the winding effect is affected due to looseness after the stator is loaded into the loading rotating rod is solved.

The application relates to an adjustable Hall plate brushless motor, belonging to the technical field of brushless motors, which comprises a protective shell, a first end cover, a stator, a rotor, a connecting cover assembly and a circuit board, the stator is connected in the protective shell, the rotor is connected in the stator, the circuit board is connected on the stator, the first end cover is connected at one end of the protective shell, and the connecting cover assembly is connected at the other end of the protective shell; the connecting cover assembly comprises a second end cover, an adjusting piece and a Hall plate, the second end cover is connected on the protective shell, the adjusting piece is connected on the second end cover, the Hall plate is provided with a Hall sensor, the Hall plate is connected on the adjusting piece, and the adjusting piece is used for adjusting the position of the Hall plate. The Hall plate and the circuit board are separately arranged, if the mounting position of the Hall sensor of the Hall plate is inconsistent with the preset position, the position of the Hall plate is adjusted through the adjusting piece, so that the position of the Hall sensor is adjusted to the preset position, and the precision of motor forward and reverse rotation is improved.

The invention relates to the technical field of motor control, in particular to a brushless motor electronic speed regulation circuit for an unmanned aerial vehicle and a control method of the brushless motor electronic speed regulation circuit. The brushless motor electronic speed regulation circuit comprises a printed circuit board, a power supply module and a grid driving module. The printed circuit board is provided with a plurality of wiring layers which are stacked, and comprises a first power supply layer and a second power supply layer which are adjacent to each other in the vertical direction and are overlapped and aligned, and an electrical control layer. The power supply module is arranged on the first power supply layer and the second power supply layer, the first power supply layer and the second power supply layer are electrically connected through a matrix via hole array, and the power supply module is used for being electrically connected with an external power supply and supplying power to a circuit after processing. The grid driving module is arranged on the electrical control layer, is powered by the power supply module and is used for outputting driving voltage to the brushless motor, large current transmission and balanced distribution of the multi-channel motor controller can be realized on a single printed circuit board, and electromagnetic interference of a power loop on a control signal is inhibited.

The utility model discloses an axial dust collection integrated motorized spindle which comprises a motorized spindle body, the motorized spindle body is provided with a dust collection structure, a fan structure and an automatic tool changing structure, the fan structure comprises a brushless motor and a centrifugal blade assembly, the brushless motor drives the centrifugal blade assembly to rotate to form airflow, and wood chips and dust are sucked and discharged from the dust collection structure; the automatic tool changing structure comprises a lifting air cylinder, the dust collection structure comprises a dust collection cover, and the lifting air cylinder drives the dust collection cover to move axially when the motorized spindle changes tools. The motorized spindle integrates dust collection, cooling and automatic tool changing functions, and the problems that in the prior art, the dust collection effect is poor, energy consumption is high, the occupied space is large, and cost is high are solved.

A method is provided for controlling a power tool that includes a motor having a rotor, a power switch circuit coupled to the motor, a trigger switch, and a controller configured to control a switching operation of the power switch circuit. The method includes providing drive signals for driving the power switch circuit by controlling a switching operation of the power switch circuit over a plurality of switching vectors, measuring a first current value of a single shunt element at a first time during a first vector and a second current value of the shunt element at a second time during a second vector, calculating phase currents of the motor based on the first and second current values, determining an angular position of the rotor based on the phase currents, and controlling a pulse-width modulation of the plurality of drive signals based on the angular position of the rotor.

The invention relates to a brushless motor drive circuit, in particular to a brushless motor control drive circuit with high withstand voltage isolation strength, which comprises a control circuit for receiving and processing voltage signals fed back by a sampling circuit and a detection circuit and outputting control signals to the drive circuit; the driving circuit outputs a driving signal under the action of the control signal so as to drive the brushless motor to commutate or start and stop; the sampling circuit detects a current signal when the driving circuit works, converts the current signal into a first voltage signal and sends the first voltage signal to the control circuit, so that the control circuit monitors the three-phase current of the brushless motor in real time; the detection circuit is used for detecting a Hall signal of the brushless motor with a Hall sensor, converting the phase change state of the brushless motor into a second voltage signal and sending the second voltage signal to the control circuit, so that the control circuit can detect the position of the rotor in real time; according to the technical scheme, the defects that in the prior art, environment adaptability is poor, and precise driving of the brushless motor is difficult to achieve can be overcome.

A brushless fuel pump comprises a machine shell, a pump assembly and an upper end cover are arranged at the two ends of the machine shell, riveting rings are integrally arranged at the two ends of the machine shell, the machine shell is fixedly connected with the pump assembly and the upper end cover through the riveting rings in a pressing riveting mode, the connecting mode is simple and reliable, the structural strength is high, and the sealing performance and integrity of a pump body in the high-pressure working environment can be effectively guaranteed; a brushless motor is arranged in an inner cavity of the machine shell and comprises a support, a rotor is arranged in the support in a rotating mode, a plurality of inner stator punching sheets with winding wires are arranged on the side wall of the inner side of the support, the outer side of the support is sleeved with outer stator punching sheets, and the outer stator punching sheets are arranged on the outer side of the outer stator punching sheets. A structure that an inner stator punching sheet and an outer stator punching sheet are combined is adopted, optimization of a magnetic field and improvement of motor torque and efficiency are facilitated, the pump assembly comprises a wheel shell, an impeller connected with a rotor is arranged in the wheel shell, an oil inlet is further formed in the wheel shell, and an oil outlet communicated with an inner cavity of the support is formed in the upper end cover.

The utility model relates to the technical field of fruit peel detection, in particular to a sampling device based on fruit peel detection, which comprises a battery, the battery is fixedly mounted at the rear end of a handheld rod, an anti-slip sleeve is fixedly mounted on the outer side of the handheld rod, a control button is fixedly mounted on the front side of the top end of the handheld rod, and a connecting cylinder is fixedly mounted at the front end of the handheld rod. A sampling mechanism is arranged on the outer side of the connecting cylinder, the sampling mechanism comprises a brushless motor, a connecting wire is fixedly installed among the brushless motor, a control button and a battery, the brushless motor is fixedly installed in the connecting cylinder, and an internal thread screw cylinder is fixedly installed at the driving end of the brushless motor; peels are cut under the driving of the brushless motor, so that the sampling efficiency of the peels is higher, the peels can be clamped and kept stable through mutual thrust of the push plate assembly, and meanwhile, the push plate assembly can be reset to push the peels to pop out through resetting of the tension spring assembly, so that the peels are prevented from being retained in the sampling barrel.

The invention belongs to the technical field of vehicle door control, and particularly relates to an electric vehicle door safety system and a control method. The electric vehicle door safety system comprises a sensing layer, a decision-making layer and an execution layer, the sensing layer comprises an ultrasonic radar, a millimeter wave radar, a laser radar, an out-vehicle camera and an in-vehicle camera; the decision-making layer comprises a driving domain controller, a cabin domain controller and a vehicle body domain controller; the execution layer comprises a vehicle door controller, a brushless motor and an audible and visual alarm. According to the technical scheme, after the identity of a door opener is detected and human features are recognized, corresponding door opening resistance limitation, sound-light alarm reminding and the like are provided, the door opener is suitable for different crowds, and the safety of opening the door to get off is improved.

The invention provides an anti-impact bearing structure and a brushless motor, and relates to the technical field of brushless motors. The shock-resistant bearing structure comprises a rotating shaft body, a bearing, a base, a bearing cover, a shaft end cover and a buffer assembly, the shaft end cover is arranged on the outer side of the rotating shaft body in a sleeving mode, the shaft end cover and the rotating shaft body are each provided with a corresponding threaded section, and the shaft end cover is in threaded connection with the rotating shaft body through the threaded sections; the bearings are arranged on the outer sides of the shaft end covers in a sleeving mode, the bases are arranged on the outer sides of the bearings in a sleeving mode, the multiple bearings are arranged at intervals in the axial direction of the rotating shaft body, and the buffering assemblies are arranged between the adjacent bearings; the bearing cover is connected with the base, in the axial direction of the rotating shaft body, the bearing cover and the base clamp outer rings of the multiple bearings, and the rotating shaft body and the shaft end cover clamp inner rings of the multiple bearings. The impact resistance of the brushless motor is further improved on the premise that the structure of the brushless motor is kept compact and the cost is controlled.

The present application provides a brushless motor including a housing, a front cover, a bracket, a stator assembly, a rotor assembly, a circuit board, and a sensor assembly. The stator assembly is provided around the rotor assembly, and the rotor assembly includes a rotor shaft and a permanent magnet fixedly sleeved on the rotor shaft. The rotor shaft includes a rotor shaft body and two flat portions formed by recessing the rotor shaft body. The sensor assembly includes a sensor magnet and a Hall sensor, and the sensor magnet includes a magnet body and a fixing hole formed through the magnet body. The flat portions are fixed in the fixing hole. Magnetizing directions of the permanent magnet and the sensor magnet are perpendicular to the flat portions. The brushless motor has consistent directions for the main and secondary magnetic fields, high rotation data detection accuracy, and excellent torque performance.

The invention discloses a compact type driving device, a robot arm and a robot. The compact type driving device comprises a machine shell; the brushless motor is arranged in the machine shell; the transverse speed reducer is arranged in the machine shell and is connected with the brushless motor; the longitudinal speed reducer is arranged in the machine shell and is connected with the transverse speed reducer; the power transmission direction of the transverse speed reducer is transverse, and the power transmission direction of the longitudinal speed reducer is longitudinal; the longitudinal speed reducer is close to the brushless motor, and an output shaft of the longitudinal speed reducer corresponds to the position of the bottom of the brushless motor. The two different arrangement modes of the transverse speed reducer and the longitudinal speed reducer are combined, the longitudinal speed reducer and the brushless motor are close to each other, the output shaft of the longitudinal speed reducer corresponds to the position of the bottom of the brushless motor, and the structure of the whole compact driving device is more compact.

The invention discloses a self-balancing bicycle software control method and system capable of achieving zero sample migration. The method comprises the steps that bicycle body posture information of a self-balancing bicycle and a motion instruction from the outside are obtained in real time; the trained self-balancing neural controller receives vehicle body attitude information, a motion instruction, a current steering motor position fed back by a control layer and a vehicle body linear speed, forward reasoning calculation is carried out once, and a neural network directly outputs two control variables including a target steering angle instruction and a driving accelerator instruction; generating a steering control signal based on the target steering angle instruction according to a servo motor communication protocol, wherein the steering control signal is used for driving a steering servo motor to accurately rotate to a target angle; based on the accelerator driving instruction, the accelerator driving instruction is converted into an accelerator control command for the hub brushless motor, and the accelerator control command adjusts the forward speed of the vehicle. The technical problems of simulation-reality gaps, poor robustness and low development efficiency of existing self-balancing bicycle control are solved.

This utility model relates to a stator upper frame for a brushless motor and a stator winding assembly structure based on the upper frame. A hub is provided on the outer edge of the end plate of the upper frame, and slots and grooves are provided on the hub. These slots and grooves are used to position the lead wires of the coil assembly, allowing the lead wires to be controlled by the upper frame. Since the slots and grooves are located outside the motor housing, the lead wires are restricted by the grooves and extend along the motor axis outside the motor, reducing the space required for motor storage. Simultaneously, the mutually separated grooves and grooves restrict adjacent lead wires to maintain a certain distance, preventing them from tangling. The perpendicular slots and grooves effectively prevent lead wire rotation, ensuring the stable position of each lead wire. Especially when using rigid lead wires, each lead wire maintains a stable posture due to the constraint of the hub, facilitating automated motor assembly.