Electric side door opening actuator with brushless motor
By using a combination of a brushless motor and a Hall sensor in the electric side-opening door actuator, the problems of high noise, high loss and inaccurate control of brushed motors are solved, achieving stable and precise control of the electric actuator, and improving service life and user experience.
Patent Information
- Application Number
- CN202520112687.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-17
AI Technical Summary
The brushed motors in existing electric side-opening door actuators suffer from problems such as high noise, high losses, short lifespan, and inability to accurately control speed and torque.
A brushless motor is used to replace the brushed motor. Hall sensors are used to detect the magnetic pole position of the rotor in real time. Precise control is achieved through electronic commutation technology. Mechanical energy is converted by combining worm gear, gear and lead screw structure to achieve stable start-stop, commutation and speed control.
It improves the service life of electric actuators and user experience, reduces mechanical friction noise and electromagnetic interference, and achieves precise control over door opening speed and angle.
Smart Images
Figure CN223798048U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a side opening door actuator, especially a brushless motor electric side opening door actuator. BACKGROUND
[0002] At present, with the increasing requirement of users on the intelligence and safety of the automobile side opening door, the application of electric actuator on the automobile side opening door is also increasingly widespread. As the driving component of the electric actuator, the motor plays a core role and greatly affects the user experience.
[0003] The motor in the existing electric side opening door actuator on the market is mainly brush motor, that is, the motor achieves the function of commutation and continuous rotation through the mechanical contact of the commutator and the brush. The friction caused by the mechanical contact makes the brush motor have large noise and high loss in the working process, and the service life is also reduced. In addition, the brush motor cannot accurately control the parameters such as the speed and torque of the motor, which leads to the fact that the side opening door actuator cannot realize accurate and stable control on the door opening speed and angle in the working process. SUMMARY
[0004] The utility model aims at solving the above-mentioned defects, and provides a brushless motor electric side opening door actuator.
[0005] In order to overcome the defects in the background art, the utility model adopts the technical scheme that the brushless motor electric side opening door actuator includes a control mechanism and an execution mechanism, the control mechanism includes a brushless motor, the front end of the brushless motor is provided with a worm, the worm is connected with an electric drive unit in the brushless motor, the execution mechanism includes a gear meshing with the worm and a lead screw meshing with the gear, one end of the lead screw is provided with a support for connecting the automobile door, and one side of the brushless motor is further provided with a connector.
[0006] According to another embodiment of the utility model, the connector is further fixed on the end cover at the front end of the brushless motor and is integrally formed with the end cover.
[0007] According to another embodiment of the utility model, the brushless motor is further cylindrical in shape.
[0008] According to another embodiment of the utility model, the brushless motor includes a stator assembly, a rotor assembly and a Hall sensor arranged inside, the stator assembly is sleeved on the rotor assembly, and the front end of the rotor assembly is connected with the worm.
[0009] The brushless motor electric side opening door actuator replaces the brush motor in the actuator commonly used in the current market with the brushless motor, optimizes various disadvantages existing in the current electric actuator, greatly improves the performance and service life, and greatly improves the use experience of the user on the electric actuator. BRIEF DESCRIPTION OF DRAWINGS
[0010] The utility model is further illustrated below in combination with the drawings and embodiments.
[0011] Figure 1 It is a structural schematic diagram of the utility model;
[0012] Figure 2 It is a structural schematic diagram of the brushless motor in the utility model;
[0013] Among them: 1, worm, 2, gear, 3, screw rod, 4, connector, 5, brushless motor, 6, support, 7, end cover, 8, hall sensor, 9, rotor assembly, 10, stator assembly. DETAILED DESCRIPTION
[0014] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. All other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.
[0015] As Figure 1 Indicated, it is a kind of through replacing the brush motor in the driving unit with brushless motor, using electronic commutation technology, the magnetic pole position of rotor is detected in real time by hall sensor, position signal is converted into electric signal and is provided to controller and generates control instruction signal, more accurate, stable start-stop, commutation, speed, torque etc. Control is realized to electric actuator. And brushless motor avoids mechanical friction commutation, almost no mechanical friction noise is generated in working process, also reduce the electromagnetic interference caused by spark due to mechanical friction, reduce abrasion, improve use efficiency, prolong the service life of motor.
[0016] Specific structure includes control mechanism and executing mechanism, wherein control mechanism includes brushless motor 5, and brushless motor 5 is cylindrical as a whole. The front end of brushless motor 5 is provided with worm 1, and worm 1 is connected with the electric driving unit in brushless motor 5, and executing mechanism includes gear 2 engaged with worm 1 and screw rod 3 engaged with gear 2, one end of screw rod 3 is provided with support 6 for connecting automobile door, and one side of brushless motor 5 is also provided with connector 4.
[0017] The connector 4 is fixed on the end cover 7 at the front end of the brushless motor 5 and is integrally formed with the end cover 7. The connector 4 functions as an input source for the power supply of the motor and the signal of the Hall.
[0018] The brushless motor 5 comprises a stator assembly 10, a rotor assembly 9 and a Hall sensor 8 arranged inside, the stator assembly 10 is sleeved on the rotor assembly 9, and the rotor assembly 9 is connected with the worm 1 at the front end. The Hall sensor 8 detects the position of the rotor in real time, converts the position signal into an electric signal, provides the electric signal to the controller and generates a control instruction signal, so as to realize more accurate and stable start-stop, commutation, rotation speed, torque and other controls of the electric actuator.
[0019] The working principle is as follows: after being powered on, the brushless motor 5 in the control mechanism converts electric energy into mechanical energy, the worm 1 on the motor shaft generates a rotating torque, the gear 2 rotates with the worm 1 through meshing with the worm 1, and the meshing between the tooth shape arranged on the screw rod 3 and the gear 2 converts the rotating torque into linear motion. The bracket 6 is connected with the screw rod 3, and the automobile door is connected with the control mechanism through the bracket 6. The screw rod 3 drives the bracket 6 to perform linear reciprocating motion, so as to realize electric control of the electric side opening door.
[0020] The above is only the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.
Claims
1. A brushless motor electrically operated side door operator comprising a control mechanism and an actuating mechanism, characterized in that: The control mechanism comprises a brushless motor (5), the front end of the brushless motor (5) is provided with a worm (1), the worm (1) is connected with an electric drive unit in the brushless motor (5), the actuator comprises a gear (2) engaged with the worm (1), and a lead screw (3) engaged with the gear (2), one end of the lead screw (3) is provided with a support (6) for connecting the automobile door, and one side of the brushless motor (5) is further provided with a connector (4).
2. A brushless motorized side door operator as claimed in claim 1, characterized in that: The connector (4) is fixed on the end cover (7) at the front end of the brushless motor (5) and is integrally formed with the end cover (7).
3. A brushless motorized side door operator as claimed in claim 1, characterized in that: The brushless motor (5) is in a cylindrical shape as a whole.
4. A brushless motorized side door operator as claimed in claim 1, characterized in that: The brushless motor (5) comprises a stator assembly (10), a rotor assembly (9) and a Hall sensor (8) arranged in the brushless motor (5), the stator assembly (10) is sleeved on the rotor assembly (9), and the front end of the rotor assembly (9) is connected with the worm (1).