A middle motor

Abstract

The utility model relates to the field of middle -position motor discloses a middle -position motor, including lower support, the bottom surface of upper support is connected through bolt screw thread connection of lower support, the front side of lower support is connected with transmission group through bolt screw thread, the outside rotatable setting of lower support and upper support has output winding disc, the transmission group is fixed with photoelectric sensor, the front side fixed with reflector of output winding disc, the front side fixed with singlechip of transmission group, singlechip and photoelectric sensor electric connection. In the utility model, through the cooperation of lower support, upper support, transmission group, inner tooth ring, photoelectric sensor, reflector and singlechip, the accurate detection of output winding disc rotation circle number can be realized, and then the opening and closing circle number of roller shutter door is accurately judged, the opening and closing position of roller shutter door is accurately controlled, the security hidden danger caused by opening and closing excessive or insufficient is avoided, and the accuracy and safety of roller shutter door operation are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of mid-drive motors, specifically a mid-drive motor. Background Technology

[0002] Electric roller shutters are widely used in shops, garages, warehouses, and other locations due to their convenience and safety. With the development of intelligent technology, users are increasingly demanding higher control precision, operational stability, and safety from roller shutters. A center-mounted motor is a design where the motor is installed in the center of the roller shutter, which differs from traditional electric roller shutter designs. In traditional electric roller shutter systems, the motor is usually installed at the top or side of the shutter, while the "center-mounted motor" places the motor in the central part of the system. The main purpose of this design is to improve the system's efficiency, stability, and durability through a more compact and symmetrical layout.

[0003] Currently, most mid-drive motors open and close roller shutters by coordinating the motor, output reel, transmission assembly, and gears. They typically rely on mechanical limit switches to determine the end point of the door's opening and closing. Therefore, they have the following drawback: mid-drive motors cannot detect the number of turns of the output reel during use. Utility Model Content

[0004] The purpose of this invention is to provide a mid-drive motor to solve the problem that the number of turns of the output winding reel cannot be detected when the mid-drive motor is in use.

[0005] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a mid-mounted motor, including a lower bracket, the lower bracket being threadedly connected to the bottom surface of an upper bracket by bolts, a transmission assembly being threadedly connected to the front side of the lower bracket by bolts, an output take-up reel being rotatably disposed on the exterior of the lower bracket and the upper bracket, an internal gear ring being fixed inside the output take-up reel, a photoelectric sensor being fixed on the transmission assembly, a reflector being fixed to the front side of the output take-up reel, a microcontroller being fixed to the front side of the transmission assembly, and the microcontroller being electrically connected to the photoelectric sensor.

[0006] Preferably, the front side of the lower bracket is connected to a mounting bracket by bolts and threads. The motor body is fixed inside the mounting bracket. The output shaft of the motor body passes through the mounting bracket and is fixed with a first gear. A second gear is fixed to the rear side of the mounting bracket. The second gear meshes with the first gear. A third gear is rotatably provided on the rear side of the transmission assembly. The third gear meshes with the second gear. A fourth gear is rotatably provided on the transmission assembly. The fourth gear meshes with an internal gear ring.

[0007] Preferably, a buzzer is fixed on the top surface of the transmission assembly, and the buzzer is electrically connected to the microcontroller.

[0008] Preferably, the output reel is equipped with a needle roller bearing inside, and the needle roller bearing is located outside the lower bracket and the upper bracket.

[0009] Preferably, the top surface of the upper bracket is connected to two locking bolts via bolt threads.

[0010] Preferably, the front end of the motor body is provided with a braking device.

[0011] Compared with existing technologies, a mid-drive motor adopting the above technical solution has the following beneficial effects:

[0012] 1. In use, through the coordinated use of the lower bracket, upper bracket, transmission group, internal gear ring, photoelectric sensor, reflector and microcontroller, it is possible to accurately detect the number of rotations of the output winding reel, thereby accurately determining the number of opening and closing rotations of the roller shutter door, precisely controlling the opening and closing position of the roller shutter door, avoiding safety hazards caused by excessive or insufficient opening and closing, and improving the accuracy and safety of the roller shutter door operation.

[0013] Second, during use, when the microcontroller counts the number of rotations of the output reel, it transmits the relevant information to the buzzer in real time. Upon receiving the signal, the buzzer emits a specific sound, such as a short "beep." Operators can intuitively understand the rotation status of the output reel based on the frequency and number of beeps emitted by the buzzer, providing a direct and convenient feedback method. The high-precision rolling characteristics of the needle roller bearings enable the output reel to rotate more smoothly and steadily, avoiding energy loss and equipment wear caused by excessive friction, thus improving the stability and reliability of the output reel's rotation.

[0014] Third, the fixing method is simple and reliable during use, ensuring that the entire centrally mounted motor unit remains stable during the operation of the roller shutter door, and will not loosen or shift due to the opening and closing of the roller shutter door. It can generate strong braking force in a short time, causing the output shaft of the motor body to stop rotating quickly, thereby stopping the output winding reel and realizing the rapid stopping of the roller shutter door, improving the safety and controllability of the roller shutter door operation. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of an embodiment.

[0016] Figure 2 This is a breakdown diagram of an embodiment.

[0017] Figure 3 This is a schematic diagram showing the disassembled upper support and output reel in an embodiment.

[0018] Figure 4This is a rear view of the mounting bracket in an embodiment.

[0019] In the diagram: 1. Lower support; 2. Upper support; 3. Transmission assembly; 4. Output reel; 5. Internal gear ring; 6. Photoelectric sensor; 7. Reflector; 8. Microcontroller; 9. Mounting bracket; 10. Motor body; 11. First gear; 12. Second gear; 13. Third gear; 14. Fourth gear; 15. Buzzer; 16. Needle roller bearing; 17. Locking bolt; 18. Braking device. Detailed Implementation

[0020] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0021] like Figures 1-4 As shown, a mid-drive motor includes a lower bracket 1, which is bolted to the bottom of an upper bracket 2. A transmission assembly 3 is bolted to the front of the lower bracket 1. An output take-up reel 4 is rotatably mounted on the exterior of the lower bracket 1 and the upper bracket 2. An internal gear ring 5 is fixed inside the output take-up reel 4. A photoelectric sensor 6 is fixed on the transmission assembly 3. A reflector 7 is fixed to the front of the output take-up reel 4. A microcontroller 8 (model STM32F407VG) is fixed to the front of the transmission assembly 3. The microcontroller 8 is connected to the photoelectric sensor... The device 6 is electrically connected. The front side of the lower bracket 1 is connected to the mounting bracket 9 by bolt thread. The motor body 10 is fixed inside the mounting bracket 9. The output shaft of the motor body 10 passes through the mounting bracket 9 and is fixed with the first gear 11. The rear side of the mounting bracket 9 is fixed with the second gear 12, which meshes with the first gear 11. The rear side of the transmission group 3 is rotatably provided with the third gear 13, which meshes with the second gear 12. The transmission group 3 is rotatably provided with the fourth gear 14, which meshes with the internal gear ring 5.

[0022] During use, the operator first installs the lower bracket 1 and upper bracket 2 onto the main beam tube of the roller shutter door to ensure the overall structure is stable and reliable. After installation, the motor body 10 is started. The output shaft of the motor body 10 drives the first gear 11 to rotate. The first gear 11 meshes with the second gear 12, thereby driving the second gear 12 to rotate. The second gear 12 further drives the third gear 13, which meshes with it, to rotate. The rotation of the third gear 13 is transmitted to the fourth gear 14 through the transmission group 3. The fourth gear 14 meshes with the internal gear ring 5 inside the output winding reel 4, ultimately driving the output winding reel 4 to rotate, realizing the opening and closing action of the roller shutter door. At the same time... The photoelectric sensor 6 is activated, continuously emitting a beam of light that illuminates the reflector 7 on the front side of the output reel 4. As the output reel 4 rotates, the reflector 7 rotates along with it. Each time the reflector 7 passes the beam of light from the photoelectric sensor 6, the reflected signal is accurately received by the sensor. Each received signal indicates that the output reel 4 has rotated one revolution. The photoelectric sensor 6 transmits this information to the microcontroller 8 in real time. The microcontroller 8, through a pre-programmed program, precisely counts the pulse signals generated each time the reflector 7 passes, thereby accurately calculating the number of revolutions of the output reel 4. Through the coordinated use of the lower bracket 1, upper bracket 2, transmission assembly 3, internal gear ring 5, photoelectric sensor 6, reflector 7, and microcontroller 8, accurate detection of the number of revolutions of the output reel 4 can be achieved, thereby accurately determining the number of opening and closing revolutions of the roller shutter door, precisely controlling the opening and closing position of the roller shutter door, avoiding safety hazards caused by over- or under-opening, and improving the accuracy and safety of the roller shutter door operation.

[0023] like Figure 1 , Figure 2 and Figure 4 As shown, a buzzer 15 is fixed on the top surface of the transmission assembly 3, and the buzzer 15 is electrically connected to the microcontroller 8.

[0024] During use, when the microcontroller 8 counts the number of rotations of the output take-up reel 4, it will transmit the relevant information to the buzzer 15 in real time. After receiving the signal, the buzzer 15 will emit a specific sound prompt, such as a short "beep". The staff can intuitively understand the rotation status of the output take-up reel 4 based on the frequency and number of times the buzzer 15 emits the sound, which provides the staff with an intuitive and convenient way to receive information feedback.

[0025] like Figures 1-3 As shown, the output reel 4 is equipped with a needle roller bearing 16 inside, and the needle roller bearing 16 is located outside the lower bracket 1 and the upper bracket 2.

[0026] In use, when the motor body 10 drives the output winding reel 4 to rotate, the needle roller bearing 16 can withstand the radial load generated during the rotation of the output winding reel 4, reducing the frictional resistance between the output winding reel 4 and the lower support 1 and the upper support 2. At the same time, the high-precision rolling characteristics of the needle roller bearing 16 enable the output winding reel 4 to rotate more smoothly and steadily, avoiding energy loss and equipment wear caused by excessive friction, and improving the stability and reliability of the rotation of the output winding reel 4.

[0027] like Figures 1-4 As shown, the top surface of the upper bracket 2 is connected by two locking bolts 17 through bolt threads, and the front end of the motor body 10 is provided with a braking device 18.

[0028] During use, operators gradually tighten the two locking bolts 17 on the top surface of the upper bracket 2, ensuring close contact with the main beam tube of the roller shutter door. This generates sufficient clamping force, firmly fixing the upper bracket 2 and lower bracket 1 to the main beam tube of the roller shutter door. The fixing method is simple and reliable, ensuring the stability of the entire centrally mounted motor unit during roller shutter door operation, preventing loosening or displacement due to the opening and closing of the roller shutter door. When it is necessary to stop the roller shutter door from running, the braking device 18 can quickly brake the output shaft of the motor body 10. The braking device 18 typically employs electromagnetic braking or mechanical braking, generating strong braking force in a short time to quickly stop the output shaft of the motor body 10 from rotating, thereby stopping the output winding reel 4 and achieving a rapid stop of the roller shutter door. This improves the safety and controllability of the roller shutter door operation.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mid-mounted motor, comprising a lower bracket (1), wherein the lower bracket (1) is threadedly connected to the bottom surface of an upper bracket (2) by bolts, characterized in that, The front side of the lower bracket (1) is connected to the transmission assembly (3) by bolt thread. The lower bracket (1) and the upper bracket (2) are rotatably provided with an output take-up reel (4). An internal gear ring (5) is fixed inside the output take-up reel (4). A photoelectric sensor (6) is fixed on the transmission assembly (3). A reflector (7) is fixed on the front side of the output take-up reel (4). A microcontroller (8) is fixed on the front side of the transmission assembly (3). The microcontroller (8) is electrically connected to the photoelectric sensor (6).

2. A mid-drive motor according to claim 1, characterized in that: The front side of the lower bracket (1) is connected to the mounting bracket (9) by bolt thread. The motor body (10) is fixed inside the mounting bracket (9). The output shaft of the motor body (10) passes through the mounting bracket (9) and is fixed with the first gear (11). The rear side of the mounting bracket (9) is fixed with the second gear (12). The second gear (12) meshes with the first gear (11). The rear side of the transmission group (3) is rotatably provided with the third gear (13). The third gear (13) meshes with the second gear (12). The transmission group (3) is rotatably provided with the fourth gear (14). The fourth gear (14) meshes with the internal gear ring (5).

3. A mid-drive motor according to claim 2, characterized in that: A buzzer (15) is fixed on the top surface of the transmission assembly (3), and the buzzer (15) is electrically connected to the microcontroller (8).

4. A mid-drive motor according to claim 3, characterized in that: The output reel (4) is equipped with a needle roller bearing (16) inside, which is located outside the lower bracket (1) and the upper bracket (2).

5. A mid-drive motor according to claim 1, characterized in that: The top surface of the upper bracket (2) is connected by two locking bolts (17) via bolt threads.

6. A mid-drive motor according to claim 5, characterized in that: The front end of the motor body (10) is provided with a braking device (18).

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