Direct-current brushless motor gearbox
By separating the motor drive board from the motor and connecting to the external power supply control, the problem of damage to the motor drive board in high-temperature environment is solved, and the safe use of the motor and large torque output are achieved in high-temperature environments.
Patent Information
- Application Number
- CN202422159303.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-03
AI Technical Summary
In the existing brushless DC motor gearbox, the motor drive plate is not separated from the motor control, resulting in damage to the motor drive plate in a high-temperature environment, causing the motor to burn in severe cases, limiting the use of the motor in a high-temperature environment.
The split design is adopted, and the motor drive board is placed outside the DC brushless motor. The torque output of the gear box is controlled by external power supply. The motor drive board can be used in a normal temperature environment, reducing Hall control to save costs.
It realizes the safety of the motor drive board in high-temperature environment, avoids motor damage, expands the application range of the motor in high-temperature environment, and can generate large torque output power.
Smart Images
Figure CN223141720U_ABST
Abstract
Description
Technical Field
[0001] An embodiment of the present utility model relates to a motor gearbox, and particularly to a DC brushless motor gearbox. Background Art
[0002] In the existing DC brushless motor gearbox, the motor drive board and the motor control are not separated. The motor drive board is arranged inside the motor. In a high-temperature usage environment, the temperature of the motor drive board arranged inside the motor is very high, which often causes the motor drive board to be damaged. In severe cases, after the motor drive board is damaged, the motor is burned out, which limits the use of the motor in a high-temperature environment. Content of the Utility Model
[0003] The purpose of the embodiment of the present utility model is to provide a DC brushless motor gearbox with a separated motor drive board and motor control, using a split type.
[0004] To achieve the above purpose, the embodiment of the present utility model designs a DC brushless motor gearbox, including:
[0005] A DC brushless motor;
[0006] A gearbox, which is connected to the gearbox through a shaft on one side of the DC brushless motor;
[0007] A motor drive board, which is connected between the DC brushless motor and the gearbox; by placing the motor drive board outside the DC brushless motor; the motor drive board controls the DC brushless motor to drive the gearbox to output torque through an external power supply.
[0008] Further, in the DC brushless motor gearbox of the present utility model, a drive board plug is arranged on the motor drive board and connected to the external power supply.
[0009] Further, in the DC brushless motor gearbox of the present utility model, the DC brushless motor further includes:
[0010] A motor housing, which is arranged at one end of the DC brushless motor;
[0011] A magnet, which is fixed on the motor housing by means of glue bonding;
[0012] A first bushing, the outer ring of the first bushing is fixed inside the motor housing by means of interference fit;
[0013] A motor shaft, which is connected to the inner ring of the first bushing with a clearance;
[0014] The stator core, with the stator core placed inside the magnet; the motor shaft penetrates through the stator core and is fixed;
[0015] The upper end plate of the motor, which is fixed above the stator core by means of clearance fit;
[0016] The lower end plate of the motor, which is fixed below the stator core by means of clearance fit;
[0017] The upper end plate of the motor, the lower end plate of the motor and the stator core are placed into the magnet together;
[0018] The end cover, with the end cover placed below the stator core; the rotating shaft sleeve on the end cover penetrates through the stator core;
[0019] The first bearing, which is fixed on the end cover by means of interference fit;
[0020] The spring, which is fixed inside the end cover by means of clearance fit;
[0021] The washer, which is fixed on the end cover by means of clearance fit; the motor drive plate is fixed on the end cover by means of interference fit; the stator core is fixed on the end cover by means of glue bonding;
[0022] The second shaft sleeve and the second bearing are fixed on the motor shaft by means of interference fit, and the second bearing is fixed on the gearbox housing of the gearbox by means of glue bonding.
[0023] Furthermore, in the DC brushless motor gearbox of the present utility model, the upper end plate of the motor and the lower end plate of the motor are oppositely arranged in the stator core.
[0024] Furthermore, in the DC brushless motor gearbox of the present utility model, a plurality of isolation columns are arranged above both the upper end plate of the motor and the lower end plate of the motor; the plurality of isolation columns are respectively snapped into the isolation holes provided on the stator core.
[0025] Furthermore, in the DC brushless motor gearbox of the present utility model, the motor shaft sequentially passes through the motor drive plate, the spring, the washer, the first bearing, the rotating shaft sleeve on the end cover, and the first shaft sleeve from bottom to top, and then enters the motor housing.
[0026] Furthermore, in the DC brushless motor gearbox of the present utility model, the gearbox further includes:
[0027] A second bearing, the motor shaft of the DC brushless motor is inserted into the inner hole of the second bearing;
[0028] A gearbox housing, the outer shaft of the second bearing is clamped into the bearing hole on the gearbox housing;
[0029] A first gear, after the motor shaft passes through the gearbox housing, the gear head on the motor shaft meshes with the large gear on the first gear;
[0030] A third shaft core, the third shaft core is connected to the center hole of the first gear by clearance fit;
[0031] A second gear, the small gear on the first gear meshes with the large gear on the second gear;
[0032] A first shaft core, the first shaft core is connected to the center hole of the second gear by clearance fit;
[0033] A fourth gear, the small gear below the second gear meshes with the fourth gear;
[0034] A second shaft center, the second shaft center is connected to the center hole of the fourth gear by clearance fit;
[0035] A third gear, the third gear meshes with the fourth gear on the other side;
[0036] An output shaft, the output shaft is fixed on the output shaft by interference fit in the center hole of the third gear;
[0037] A gearbox cover plate, the output shaft passes through the gearbox cover plate.
[0038] Furthermore, in the DC brushless motor gearbox of the present invention, the gearbox housing and the end cover are fixed by a first screw assembly; after the gearbox housing and the gearbox cover plate are combined, they are fixed by a second screw assembly to form a gearbox housing.
[0039] Furthermore, in the DC brushless motor gearbox of the present invention, a third bushing is provided on the gearbox housing; a second bushing is provided on the gearbox cover plate.
[0040] Furthermore, in the DC brushless motor gearbox of the present invention, the output shaft is inserted between the third bushing and the second bushing.
[0041] Compared with the prior art, the utility model adopts the following structure: a gearbox is connected by a shaft on one side of a DC brushless motor; a motor drive board is connected between the DC brushless motor and the gearbox; the motor drive board is placed outside the DC brushless motor; the motor drive board controls the DC brushless motor to drive the gearbox to output torque through an external power supply; a split design is adopted, which is easier to disassemble. The motor drive board can be set in a normal temperature environment or in a high temperature environment area far from the motor body, without affecting each other, making the motor drive board more convenient. The cost is saved by reducing the Hall control method. The motor structure can be used in multiple high temperature environments such as wall-mounted boilers, and can also be applied to other high temperature environments. When the motor is powered on, it generates rotational power, and the power is output with large torque through four-stage deceleration by gears. The technical problem that in the existing DC brushless motor gearbox, the motor drive board and the motor control are not separated, the motor drive board is set inside the motor, and in a high temperature environment, the temperature of the motor drive board set inside the motor is very high, often causing damage to the motor drive board. In severe cases, after the motor drive board is damaged, the motor will burn out, restricting the use of the motor in a high temperature environment is solved. BRIEF DESCRIPTION OF THE DRAWINGS
[0042] Figure 1 is a three-dimensional structure schematic diagram of the utility model;
[0043] Figure 2 is Figure 1 the blasting schematic diagram of... DETAILED DESCRIPTION OF THE EMBODIMENTS
[0044] In order to make the objectives, technical solutions and advantages of the utility model clearer, the embodiments of the utility model will be described in detail below with reference to the drawings. However, those of ordinary skill in the art can understand that in the embodiments of the utility model, many technical details are provided to help the reader better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in each claim of the present application can still be implemented.
[0045] An embodiment of the utility model relates to a DC brushless motor gearbox, as Figure 1 and Figure 2 shown, including:
[0046] The DC brushless motor 100 serves as the driving component of the DC brushless motor gearbox in this embodiment, providing rotational power;
[0047] A gearbox 200 is connected by a shaft on one side of the DC brushless motor 100; the main function of the gearbox 200 is to perform deceleration.
[0048] Between the DC brushless motor 100 and the gearbox 200, the motor drive board 11 is connected in the middle; by placing the motor drive board 11 outside the DC brushless motor 100; the motor drive board 11 controls the DC brushless motor 100 through an external power supply to drive the gearbox 200 to output torque. The motor drive board 11 mainly serves the purpose of controlling the start and stop of the DC brushless motor 100 and performing Hall control; in this actual example, the DC brushless motor gearbox adopts a split design, which is easier to disassemble. The motor drive board 11 can be set in a normal temperature environment or in a high-temperature environment area far from the body of the DC brushless motor 100, without affecting each other, making the motor drive board 11 more convenient. By reducing the Hall control method to save costs, the structure of the DC brushless motor 100 can be used in multiple high-temperature use environments such as wall-mounted boilers, and can also be applied to other high-temperature environments. When the motor is powered on, it generates rotational power, and through four gears, it is gradually decelerated to generate a large torque output power; it solves the technical problem that in the existing DC brushless motor gearbox, the control of the motor drive board 11 and the DC brushless motor 100 is not separated, and the motor drive board is set inside the DC brushless motor 100. In a high-temperature use environment, the temperature inside the DC brushless motor 100 where the motor drive board 11 is set is very high, often causing the motor drive board 11 to be damaged. In severe cases, after the motor drive board 11 is damaged, it will even cause the DC brushless motor 100 to burn out, restricting the use of the DC brushless motor 100 in high-temperature environments.
[0049] To achieve the above technical effects, in the DC brushless motor gearbox of this embodiment, as Figure 1 and Figure 2 shown, a drive board plug 12 is provided on the motor drive board 11 and connected to an external power supply. The external power supply provides power to the motor drive board 11 to drive the DC brushless motor 100.
[0050] To achieve the above technical effects, in the DC brushless motor gearbox of this embodiment, as Figure 1 and Figure 2 shown, the DC brushless motor 100 further includes:
[0051] A motor housing 1 is provided at one end of the DC brushless motor 100; the motor housing 1 serves as the outer shell of the DC brushless motor 100.
[0052] A magnet 4 is fixed on the motor housing 1 by means of glue bonding; the magnet 4 mainly provides magnetic flux.
[0053] The outer ring of the first bushing 2 is fixed inside the motor housing 1 by means of interference fit; the first bushing 2 is used for the rotation of the motor shaft 13;
[0054] The inner ring of the first bushing 2 is connected to the motor shaft 13 with a gap; the motor shaft 13 rotates in the inner ring of the first bushing 2;
[0055] Place the stator core 8 inside the magnet 4; the motor shaft 13 passes through the stator core 8 and is fixed; the stator core 8 constitutes the excitation structure;
[0056] The upper end plate 3 of the motor is fixed above the stator core 8 by means of clearance fit;
[0057] The lower end plate 5 of the motor is fixed below the stator core 8 by means of clearance fit;
[0058] The upper end plate 3 of the motor, the lower end plate 5 of the motor and the stator core 8 are placed into the magnet 4 together; the upper end plate 3 of the motor, the lower end plate 5 of the motor and the stator core 8 form the stator structure;
[0059] Place the end cover 9 below the stator core 8; the rotating shaft sleeve 30 on the end cover 9 passes through the stator core 8; the end cover 9 forms the lower cover structure;
[0060] The first bearing 10 is fixed on the end cover 9 by means of interference fit; the first bearing 10 mainly plays the role of supporting the rotation of the motor shaft 13;
[0061] The spring 6 is fixed inside the end cover 9 by means of clearance fit;
[0062] The washer 7 is fixed on the end cover 9 by means of clearance fit; the motor drive plate 11 is fixed on the end cover 9 by means of interference fit; the stator core 8 is fixed on the end cover 9 by means of glue bonding; the spring 6 and the washer 7 mainly provide elasticity during the rotation of the motor shaft 13.
[0063] The second shaft sleeve 22 and the second bearing 16 are fixed on the motor shaft 13 by means of interference fit, and the second bearing 16 is fixed on the gearbox housing 17 of the gearbox 200 by means of glue bonding.
[0064] To achieve the above technical effects, in the DC brushless motor gearbox of this embodiment, as Figure 1 and Figure 2 shown, the upper end plate 3 of the motor and the lower end plate 5 of the motor are oppositely arranged in the stator core 8. The insulating structure of the stator core 8 is formed.
[0065] To achieve the above technical effects, in the DC brushless motor gearbox of this embodiment, as Figure 1 and Figure 2 shown, a plurality of isolation columns 31 are arranged above both the upper end plate 3 of the motor and the lower end plate 5 of the motor; the plurality of isolation columns 31 are respectively snapped into the isolation holes 32 provided on the stator core 8.
[0066] To achieve the above technical effects, in the DC brushless motor gearbox of this embodiment, as Figure 1 and Figure 2As shown, the motor shaft 13 passes through the motor drive board 11, the spring 6, the washer 7, the first bearing 10, the rotating shaft sleeve 30 on the end cover 9, and the first shaft sleeve 2 from bottom to top, and then enters the motor housing 1.
[0067] To achieve the above technical effects, in the DC brushless motor gearbox of this embodiment, as Figure 1 and Figure 2 shown, the gearbox 200 further includes:
[0068] The motor shaft 13 of the DC brushless motor 100 enters the inner hole of the second bearing 16; the second bearing 16 mainly serves to support the motor shaft 13.
[0069] The outer shaft of the second bearing 16 is clamped into the bearing hole on the gearbox housing 17; the gearbox housing 17 forms an upper cover structure;
[0070] After the motor shaft 13 passes through the gearbox housing 17, the gear head 33 on the motor shaft 13 meshes with the large gear on the first gear 20; the first gear 20 meshes with the gear head 33 on the motor shaft 13, mainly serving for transmission.
[0071] The third shaft core 25 is connected to the center hole of the first gear 20 by clearance fit; the first gear 20 rotates on the third shaft core 25,
[0072] The small gear on the first gear 20 meshes with the large gear on the second gear 18; the second gear 18 mainly serves for transmission.
[0073] The first shaft core 23 is connected to the center hole of the second gear 18 by clearance fit; the second gear 18 rotates on the first shaft core 23,
[0074] The small gear below the second gear 18 meshes with the fourth gear 21; the fourth gear 21 mainly serves for transmission.
[0075] The second shaft center 24 is connected to the center hole of the fourth gear 21 by clearance fit; the fourth gear 21 rotates on the second shaft center 24,
[0076] On the other side of the fourth gear 21, it meshes with the third gear 19; the third gear 19 mainly serves for transmission.
[0077] The third gear 19 is fixed on the output shaft 28 by interference fit in the center hole of the third gear 19;
[0078] The gearbox cover plate 26 has an output shaft 28 passing through it. The output shaft 28 mainly functions to output torque. Through the gear head 33 on the motor shaft 13 meshing with the large gear on the first gear 20; the first gear 20 meshing with the gear head 33 on the motor shaft 13; then the small gear on the first gear 20 meshing with the large gear on the second gear 18; the small gear below the second gear 18 meshing with the fourth gear 21; the other side of the fourth gear 21 meshing with the third gear 19; and the third gear 19 being fixed on the output shaft 28 by interference fit in its central hole, a low-speed and high-torque output of the gearbox 200 is formed.
[0079] To achieve the above technical effects, in the DC brushless motor gearbox of this embodiment, as Figure 1 and Figure 2 shown, the gearbox housing 17 and the end cover 9 are fixed by the first screw assembly 14; after the gearbox housing 17 and the gearbox cover plate 26 are combined, they are fixed by the second screw assembly 27 to form the gearbox body.
[0080] To achieve the above technical effects, in the DC brushless motor gearbox of this embodiment, as Figure 1 and Figure 2 shown, a third bushing 15 is provided on the gearbox housing 17; a second bushing 22 is provided on the gearbox cover plate 26.
[0081] To achieve the above technical effects, in the DC brushless motor gearbox of this embodiment, as Figure 1 and Figure 2 shown, the output shaft 28 is inserted between the third bushing 15 and the second bushing 22.
[0082] Those of ordinary skill in the art can understand that the above embodiments are specific embodiments for implementing the present invention, and in practical applications, various changes can be made in form and details without departing from the spirit and scope of the present invention.
Claims
1. A DC brushless motor gearbox, characterized in that, Comprising: A brushless DC motor (100); A gearbox (200), the gearbox (200) being connected by a shaft to one side of the brushless DC motor (100); A motor drive board (11), the motor drive board (11) being connected in the middle of the brushless DC motor (100) and the gearbox (200); by placing the motor drive board (11) outside the brushless DC motor (100); the motor drive board (11) controls the brushless DC motor (100) through an external power supply to drive the gearbox (200) to output torque.
2. The DC brushless motor gearbox according to claim 1, wherein, A drive board plug (12) is provided on the motor drive board (11) and is connected to the external power supply.
3. The DC brushless motor gearbox according to claim 1, characterized in that, The brushless DC motor (100) further comprises: A motor housing (1), the motor housing (1) being provided at one end of the brushless DC motor (100); A magnet (4), the magnet (4) being fixed to the motor housing (1) by means of glue bonding; A first bushing (2), the outer ring of the first bushing (2) being fixed inside the motor housing (1) by means of interference fit; A motor shaft (13), the inner ring of the first bushing (2) being connected to the motor shaft (13) with a clearance; A stator core (8), the stator core (8) being placed inside the magnet (4); the motor shaft (13) passes through the stator core (8) and is fixed; A motor upper end plate (3), the motor upper end plate (3) being fixed above the stator core (8) by means of clearance fit; A motor lower end plate (5), the motor lower end plate (5) being fixed below the stator core (8) by means of clearance fit; The motor upper end plate (3), the motor lower end plate (5) and the stator core (8) are placed together into the magnet (4); An end cover (9), the end cover (9) being placed below the stator core (8); a rotating shaft sleeve (30) on the end cover (9) passes through the stator core (8); A first bearing (10), the first bearing (10) being fixed on the end cover (9) by means of interference fit; A spring (6), the spring (6) being fixed inside the end cover (9) by means of clearance fit; A washer (7), the washer (7) being fixed on the end cover (9) by means of clearance fit; the motor drive board (11) is fixed on the end cover (9) by means of interference fit; the stator core (8) is fixed on the end cover (9) by means of glue bonding; A second bushing (22) and a second bearing (16) are fixed on the motor shaft (13) by means of interference fit, and the second bearing (16) is fixed on the gearbox housing (17) of the gearbox (200) by means of glue bonding.
4. The DC brushless motor gearbox according to claim 3, characterized in that The motor upper end plate (3) and the motor lower end plate (5) are oppositely arranged in the stator core (8).
5. The DC brushless motor gearbox according to claim 4, characterized in that A number of spacer posts (31) are provided above both the upper end plate (3) and the lower end plate (5) of the motor; the number of spacer posts (31) are respectively snapped into the spacer holes (32) provided on the stator core (8).
6. The DC brushless motor gearbox according to claim 3, wherein, The motor shaft (13) passes through the motor drive plate (11), the spring (6), the washer (7), the first bearing (10), the rotating shaft sleeve (30) on the end cover (9), and the first shaft sleeve (2) from bottom to top, and then enters the motor housing (1).
7. The DC brushless motor gearbox according to claim 1, characterized in that, The gearbox (200) further includes: A second bearing (16), the motor shaft (13) of the DC brushless motor (100) enters the inner hole of the second bearing (16); A gearbox housing (17), the outer shaft of the second bearing (16) is snapped into the bearing hole on the gearbox housing (17); A first gear (20), after the motor shaft (13) passes through the gearbox housing (17), the gear head (33) on the motor shaft (13) meshes with the large gear on the first gear (20); A third shaft core (25), the third shaft core (25) is connected to the center hole of the first gear (20) by clearance fit; A second gear (18), the small gear on the first gear (20) meshes with the large gear on the second gear (18); A first shaft core (23), the first shaft core (23) is connected to the center hole of the second gear (18) by clearance fit; A fourth gear (21), the small gear below the second gear (18) meshes with the fourth gear (21); A second shaft center (24), the second shaft center (24) is connected to the center hole of the fourth gear (21) by clearance fit; A third gear (19), the third gear (19) meshes with the fourth gear (21) on the other side; An output shaft (28), the output shaft (28) is fixed to the center hole of the third gear (19) by interference fit; A gearbox cover plate (26), the output shaft (28) passes through the gearbox cover plate (26).
8. The DC brushless motor gearbox according to claim 7, characterized in that, The gearbox housing (17) and the end cover (9) are fixed by a first screw assembly (14); after the gearbox housing (17) and the gearbox cover plate (26) are combined, they are fixed by a second screw assembly (27) to form a gearbox housing.
9. The DC brushless motor gearbox according to claim 8, wherein, A third shaft sleeve (15) is provided on the gearbox housing (17); a second shaft sleeve (22) is provided on the gearbox cover plate (26).
10. The DC brushless motor gearbox according to claim 9, characterized in that, The output shaft (28) is inserted between the third shaft sleeve (15) and the second shaft sleeve (22).