Miniature inductive brushless motor

Abstract

The utility model relates to the technical field of intelligent robots, and discloses a miniature inductive brushless motor which comprises a bottom plate, the periphery of the bottom plate is in threaded connection with a fixing assembly for installing a device, and the top of the bottom plate is fixedly connected with a limiting assembly for positioning subsequent workpieces. A customized shell is slidably connected to the interior of the limiting assembly, a customized rear cover is fixedly connected to the left end of the customized shell, a customized Hall reversing circuit is fixedly connected to the left side of the interior of the customized rear cover, and a three-pin is fixedly connected to the left end of the customized Hall reversing circuit; and the front end of the left side of the customized rear cover is fixedly connected with a five-wire. According to the utility model, the three-pin five-wire structure employs 0.64 mm pins for three phase wires with large current magnitude, the current bearing capability is greatly improved, the five wires related to Hall employ 1.25-5P terminals, and the three-pin five-wire structure is not easy to deform during production because the pins are thickened and shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent robots, in particular to a micro-sensorless brushless motor. Background Technique

[0002] The micro-sensorless brushless motor is a high-performance small motor. It is small in size but powerful in power. Through the built-in sensor, it can accurately sense the rotor position and achieve precise control. It has the advantages of high efficiency, low noise, long service life, etc. It is widely used in fields such as unmanned aerial vehicles, smart phones, and wearable devices, providing a stable and reliable power source for these devices, helping technology products achieve better performance and more compact designs, and promoting the continuous development of electronic technology.

[0003] In the prior art, during the use of some micro-sensorless brushless motors, with the existing 8-pin structure, due to the small cross-sectional area of the pins, they cannot withstand large currents; and due to the small size of the pins, it is easy to damage the pins during the production of the motor and the installation process by the customer, resulting in the inability to install smoothly at the client side. Summary of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides a micro-sensorless brushless motor, aiming to improve the problems of inability to protect the pins and small current passing through the pins in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A micro-sensorless brushless motor includes a bottom plate, and fixing components for installing the device are threadedly connected around the bottom plate. A limiting component for positioning subsequent workpieces is fixedly connected to the top of the bottom plate. A customized housing is slidably connected inside the limiting component. A customized rear cover is fixedly connected to the left end of the customized housing. A customized Hall commutation circuit is fixedly connected to the left side inside the customized rear cover. A three-pin is fixedly connected to the left end of the customized Hall commutation circuit. A five-wire is fixedly connected to the front left side of the customized rear cover. A connector is fixedly connected to the front end of the five-wire. A rotor assembly is fixedly connected inside the customized housing. An iron core is fixedly connected inside the rotor assembly. A rotating shaft is fixedly connected inside the iron core. Rear cover built-in bearings are fixedly connected to both the left and right ends of the rotating shaft. A coil is fixedly connected to the left end of the external part of the rotating shaft.

[0007] As a further description of the above technical solution:

[0008] The fixing components include a plurality of bolts, and the outer parts of the plurality of bolts are respectively threadedly connected around the outside of the bottom plate. Washers are slidably connected to the outside of the bolts.

[0009] As a further description of the above technical solution:

[0010] The limiting component includes a connecting block, the bottom of the connecting block is fixedly connected to the top of the bottom plate, a first hoop is fixedly connected to the top of the connecting block, a second hoop is rotatably connected to the rear end of the first hoop, and an installation component for fixing the second hoop is fixedly connected to the front end of the top of the bottom plate;

[0011] As a further description of the above technical solution:

[0012] The installation component includes a stabilizing block, the bottom of the stabilizing block is fixedly connected to the front end of the top of the bottom plate, through holes are formed in the front and rear ends of the top of the stabilizing block, fixing plates are fixedly connected inside the through holes, clamping blocks are fixedly connected to the tops of the fixing plates, and springs are fixedly connected to the left and right ends of the top of the fixing plate;

[0013] As a further description of the above technical solution:

[0014] A positioning block is fixedly connected to the front end of the second hoop, a connecting plate is fixedly connected to the bottom of the positioning block, and a clamping pin is fixedly connected to the bottom of the connecting plate;

[0015] As a further description of the above technical solution:

[0016] The bottoms of multiple gaskets are in contact with the periphery of the top of the bottom plate;

[0017] As a further description of the above technical solution:

[0018] A limiting rod is threadedly connected to the top right end of the stabilizing block, and the outside of the limiting rod is threadedly connected to the inside of the positioning block;

[0019] As a further description of the above technical solution:

[0020] The inside of the clamping block is engaged with the outside of the clamping pin, and the tops of the two springs are fixedly connected to the far ends of the two clamping blocks respectively.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the customized rear cover can be fixed by the customized shell, so that the customized Hall commutation circuit can be fixed. At the same time, the three pins are installed at the positive and negative poles of the power supply, and the five wires are installed at the external power supply, realizing the structure of three pins and five wires. The three phase wires with larger current are provided with 0.64 mm pins, greatly improving the current carrying capacity. And the five wires related to the Hall adopt 1.25 - 5P terminals, which greatly facilitates the installation and use of customers. Due to the thickening and shortening of the pins of the three pins and five wires, they are not easily deformed during production, and the production qualification rate is greatly improved.

[0023] 2. In the present utility model, the snap pin can be engaged with the snap block, and at the same time, the limiting rod is placed inside the positioning block and the stabilizing block, so as to ensure the stable and reliable operation of the motor during operation, reduce vibration and noise, improve the working precision, prevent the motor from shifting due to external force, protect the motor and connecting components, extend the service life of the motor, and ensure the stable performance of the overall equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 FIG. is a three-dimensional schematic diagram of a micro sensorless brushless motor proposed by the present utility model;

[0025] Figure 2 FIG. is a schematic structural diagram of a rear cover built-in bearing of a micro sensorless brushless motor proposed by the present utility model;

[0026] Figure 3 FIG. is a schematic structural diagram of a second hoop of a micro sensorless brushless motor proposed by the present utility model;

[0027] Figure 4 is Figure 3 the enlarged view at A in

[0028] Figure 5 FIG. is a schematic structural diagram of an iron core of a micro sensorless brushless motor proposed by the present utility model;

[0029] Figure 6 FIG. is a schematic structural diagram of a customized Hall commutation circuit of a micro sensorless brushless motor proposed by the present utility model.

[0030] LEGEND DESCRIPTION:

[0031] 1. Bottom plate; 2. Bolt; 3. Gasket; 4. Connecting block; 5. First hoop; 6. Second hoop; 7. Positioning block; 8. Stabilizing block; 9. Connecting plate; 10. Snap pin; 11. Hole groove; 12. Fixed plate; 13. Spring; 14. Snap block; 15. Limiting rod; 16. Customized housing; 17. Customized rear cover; 18. Three pins; 19. Five wires; 20. Connector; 21. Customized Hall commutation circuit; 22. Coil; 23. Rear cover built-in bearing; 24. Rotating shaft; 25. Rotor assembly; 26. Iron core. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] Refer to Figures 1 to 3, an embodiment provided by the present utility model: a micro-sensing brushless motor, including a bottom plate 1. The bottom plate 1 is a workpiece that can fix the overall device, usually made of strong metal, and can provide support for subsequent workpieces at the same time. Fixing components for installing the device are threadedly connected around the bottom plate 1. The fixing components include a plurality of bolts 2. The outer parts of the plurality of bolts 2 are respectively threadedly connected around the outside of the bottom plate 1. The bottom plate 1 can be fixed by the bolts 2. A gasket 3 is slidably connected to the outside of the bolts 2. The bottoms of the plurality of gaskets 3 are in contact with the top periphery of the bottom plate 1. The gasket 3 can reduce the friction between the bolt 2 and the bottom plate 1 and prevent shaking after long-term use. The overall device can be installed at the required position through the bolts 2;

[0034] A limiting component for positioning subsequent workpieces is fixedly connected to the top of the bottom plate 1. The limiting component includes a connecting block 4. The bottom of the connecting block 4 is fixedly connected to the top of the bottom plate 1. The bottom plate 1 can fix the connecting block 4 and increase the stability of subsequent workpieces at the same time. A first hoop 5 is fixedly connected to the top of the connecting block 4. The first hoop 5 can be fixed by the connecting block 4. A second hoop 6 is rotatably connected to the rear end of the first hoop 5. The second hoop 6 can rotate at one end of the first hoop 5, and then the effect of opening the second hoop 6 can be achieved, and subsequent workpieces can be placed therein at the same time. A positioning block 7 is fixedly connected to the front end of the second hoop 6. When the second hoop 6 is opened, the positioning block 7 can be driven to move. A connecting plate 9 is fixedly connected to the bottom of the positioning block 7. A clamping pin 10 is fixedly connected to the bottom of the connecting plate 9. When the positioning block 7 is opened, the connecting plate 9 can be driven. When the connecting plate 9 moves, the clamping pin 10 can be driven to move;

[0035] Refer to Figure 3 and Figure 4, at the front end of the top of the bottom plate 1, there is a mounting component for fixing the second hoop 6. The mounting component includes a stabilizing block 8. At the top right end of the stabilizing block 8, a limiting rod 15 is threadedly connected. The outer thread of the limiting rod 15 is connected inside the positioning block 7. The limiting rod 15 can move inside the stabilizing block 8 and the positioning block 7. Through the limiting rod 15, the stabilizing block 8 and the positioning block 7 can be restricted from falling off each other. The bottom of the stabilizing block 8 is fixedly connected to the front end of the top of the bottom plate 1. The stabilizing block 8 can be fixed on the top of the bottom plate 1. Through holes 11 are opened at the front and rear ends of the top of the stabilizing block 8. Inside the holes 11, a fixing plate 12 is fixedly connected. Through the holes 11 opened in the stabilizing block 8, the fixing plate 12 can be installed. At the top of the fixing plate 12, a clamping block 14 is fixedly connected. The inside of the clamping block 14 is engaged with the outside of the clamping pin 10. The fixing plate 12 can fix the clamping block 14. At the same time, the clamping pin 10 can be engaged with the clamping block 14, so that the positioning block 7 and the stabilizing block 8 are connected to each other. At the left and right ends of the top of the fixing plate 12, springs 13 are fixedly connected. The fixing plate 12 can provide a support source for the springs 13. The tops of the two springs 13 are respectively fixedly connected to the far ends of the two clamping blocks 14. When the clamping pin 10 is engaged inside the clamping block 14, it will squeeze the two clamping blocks 14 on both sides to achieve the positioning effect;

[0036] Refer to Figure 5 and Figure 6 , inside the limiting component, a customized housing 16 is slidably connected. At the left end of the customized housing 16, a customized rear cover 17 is fixedly connected. Through the first hoop 5 and the second hoop 6, the customized housing 16 can be clamped inside. Inside the left side of the customized rear cover 17, a customized Hall commutation circuit 21 is fixedly connected. Through the customized rear cover 17, the customized Hall commutation circuit 21 can be limited. At the left end of the customized Hall commutation circuit 21, three pins 18 are fixedly connected. At the same time, the customized Hall commutation circuit 21 can fix the three pins 18. Since the pins of the three pins 18 are thickened and shortened, they are not easily deformed during production, greatly improving the production qualification rate.

[0037] On the left front end of the customized rear cover 17, there is a five-wire 19 fixedly connected. At the same time, the three-pin 18 and the five-wire 19 are three solder joints and one terminal, reducing the customer's welding process. At the front end of the five-wire 19, there is a connector 20 fixedly connected. Through the connector 20, electric power can be transmitted to the five-wire 19. Inside the customized housing 16, there is a rotor assembly 25 fixedly connected. The rotor assembly 25 converts electrical energy into mechanical energy. Inside the rotor assembly 25, there is an iron core 26 fixedly connected. The iron core 26 can increase the magnetic field, improving the efficiency and power output of the overall device. Inside the iron core 26, there is a rotating shaft 24 fixedly connected. When the iron core 26 increases the magnetic field, it can increase the power output of the rotating shaft 24. At both the left and right ends of the rotating shaft 24, there are rear-cover built-in bearings 23 fixedly connected. The rear-cover built-in bearings 23 can greatly reduce the friction of the rotating shaft 24 during rotation, playing a role in protecting the rotating shaft 24. On the outer left end of the rotating shaft 24, there is a coil 22 fixedly connected. When an electric current passes through the coil 22, a magnetic field will be generated, and then it can drive the rotating shaft 24 of the motor to rotate.

[0038] Working principle: When it is necessary to install and fix the overall device, first place the bottom plate 1 at the installation position. Secondly, twist the bolts 2 to position the four sides of the bottom plate 1 with each other. After positioning the device, place the customized housing 16 between the hoop one 5 and the hoop two 6. By closing the hoop two 6, the positioning block 7 on one side of the hoop two 6 will move. When the positioning block 7 is moving, it can drive the bottom connecting plate 9 and the pin 10 to be engaged inside the block 14. When the block 14 is squeezed, the springs 13 on both sides will expand and contract. At the same time, when the pin 10 is completely engaged inside the block 14, the spring 13 can restore the block 14 to its original position. Secondly, the fixing plate 12 fixed at the bottom of the block 14 can be fixed in the hole 11 opened in the stable block 8. At this time, twist the limit rod 15 between the positioning block 7 and the stable block 8 so that the positioning block 7 and the stable block 8 can be engaged with each other, achieving the effect of fixed installation. At the same time, when the positioning block 7 and the stable block 8 will not separate, and after the positioning block 7 and the stable block 8 cannot separate, the hoop one 5 and the stable block 8 cannot separate, and then the internal customized housing 16 will not fall off.

[0039] When it is necessary to rotate the rotating shaft 24, first, the three-pin 18 is inserted into the positive electrode of the motor, and at the same time, it can provide the working voltage for the Hall sensor. The five-wire 19 is used to output the detected rotor position signal to the motor controller. One of the wires is generally a grounding pin, connected to the negative pole of the power supply, playing the role of circuit grounding. Another wire is used to output the detected rotor position signal to the motor controller. At the same time, through the customized housing 16 and the customized rear cover 17, the subsequent workpieces can be correspondingly installed inside. Through the three-pin 18, the current can be transmitted to the inside of the customized Hall commutation circuit 21. The coil 22 is usually wound around the stator, and the iron core 26 can increase the magnetic field. Through the rotor assembly 25, electrical energy can be converted into mechanical energy. When the current passes through the stator winding of the motor, a rotating magnetic field will be generated. The conductors in the rotor assembly will induce current under the action of the rotating magnetic field. These induced currents interact with the rotating magnetic field to generate electromagnetic force, so that the rotor assembly 25 starts to rotate, realizing the conversion of electrical energy to mechanical energy. When the rotor assembly 25 rotates during the process, it can drive the rotating shaft 24 to rotate, and the bearing 23 built into the rear cover arranged outside the rotating shaft 24 can reduce the friction force of the rotating shaft 24 during the rotation process.

[0040] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A micro brushless motor with sensors, comprising a base plate (1), characterized in that: The periphery of the bottom plate (1) is threadedly connected with a fixing component for installing the device. The top of the bottom plate (1) is fixedly connected with a limiting component for positioning subsequent workpieces. A customized housing (16) is slidably connected inside the limiting component. The left end of the customized housing (16) is fixedly connected with a customized rear cover (17). The left side inside the customized rear cover (17) is fixedly connected with a customized Hall commutation circuit (21). The left end of the customized Hall commutation circuit (21) is fixedly connected with a three-pin (18). The front end of the left side of the customized rear cover (17) is fixedly connected with a five-wire (19). The front end of the five-wire (19) is fixedly connected with a connector (20). A rotor assembly (25) is fixedly connected inside the customized housing (16). An iron core (26) is fixedly connected inside the rotor assembly (25). A rotating shaft (24) is fixedly connected inside the iron core (26). Rear cover built-in bearings (23) are fixedly connected to both the left and right ends of the rotating shaft (24). A coil (22) is fixedly connected to the outer left end of the rotating shaft (24).

2. The micro inductive brushless motor according to claim 1, wherein: The fixing component includes a plurality of bolts (2). The outer parts of the plurality of bolts (2) are respectively threadedly connected to the outer periphery of the bottom plate (1). A gasket (3) is slidably connected to the outside of the bolt (2).

3. A kind of micro brushless motor with inductance according to claim 1, characterized in that: The limiting component includes a connecting block (4). The bottom of the connecting block (4) is fixedly connected to the top of the bottom plate (1). The top of the connecting block (4) is fixedly connected with a first hoop (5). The rear end of the first hoop (5) is rotatably connected with a second hoop (6). An installation component for fixing the second hoop (6) is fixedly connected to the front end of the top of the bottom plate (1).

4. A micro brushless motor with inductance according to claim 3, characterized in that: The installation component includes a stabilizing block (8). The bottom of the stabilizing block (8) is fixedly connected to the front end of the top of the bottom plate (1). Hole grooves (11) are respectively opened at the front and rear ends of the top of the stabilizing block (8). A fixing plate (12) is fixedly connected inside the hole grooves (11). A clamping block (14) is fixedly connected to the top of the fixing plate (12). Springs (13) are fixedly connected to both the left and right ends of the top of the fixing plate (12).

5. A micro inductive brushless motor according to claim 4, characterized in that: A positioning block (7) is fixedly connected to the front end of the second hoop (6). An adapter plate (9) is fixedly connected to the bottom of the positioning block (7). A clamping pin (10) is fixedly connected to the bottom of the adapter plate (9).

6. A kind of micro inductive brushless motor according to claim 2, characterized in that: The bottoms of the plurality of gaskets (3) are in contact with the periphery of the top of the bottom plate (1).

7. A micro brushless motor with sensors according to claim 5, characterized in that: A limiting rod (15) is threadedly connected to the top right end of the stabilizing block (8). The outside of the limiting rod (15) is threadedly connected inside the positioning block (7).

8. A micro inductive brushless motor according to claim 7, characterized in that: The inside of the clamping block (14) is engaged with the outside of the clamping pin (10). The tops of the two springs (13) are respectively fixedly connected to the far ends of the two clamping blocks (14).

Images