High-strength brushless gear motor

Abstract

A high-strength brushless gear motor comprises a box body, a front end cover and a rear cover plate are arranged at the front end and the rear end of the box body respectively, a motor shaft and an output shaft in transmission connection with the motor shaft are arranged in the box body, a stator coil is arranged at the position, on the outer side of the motor shaft, of an inner cavity of the box body in a sleeving mode, and a rotor frame is fixed to the rear end of the motor shaft. The outer ring of the rotor frame is riveted with a rotor sleeve which sleeves the outer side of the stator coil, the inner wall of the rotor sleeve is provided with a rotor magnetic shoe, the outer rotor structure is adopted, and the rotor sleeve is riveted on the rotor frame, so that the assembly efficiency between the rotor sleeve and the rotor frame is improved, the connection precision and strength are also improved, and the service life is further prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a brushless motor, especially a high-strength brushless speed reducer motor. BACKGROUND

[0002] The brushless speed reducer motor is an integrated body of a speed reducer and a brushless motor, which is usually integrated and assembled by a professional speed reducer manufacturer and then sold as a complete set with the motor. However, the rotor of the conventional brushless motor is mostly glued to the rotor holder, which not only has low assembly efficiency and precision, but also is easy to fall off. In order to ensure the strength, a plurality of pins are arranged on the output end of the brushless speed reducer motor, which not only is troublesome to install, but also increases the installation size. SUMMARY

[0003] The utility model discloses a high-strength brushless speed reducer motor which has simple structure, reasonable design, convenient assembly and installation, compact overall size, high overall strength and long service life.

[0004] The utility model discloses a high-strength brushless speed reducer motor, including the box, the front and rear ends of box are equipped with front end cover, back cover respectively, be equipped with motor shaft in the box, with the output shaft that motor shaft drive connection, the box inner chamber is equipped with the stator coil on the motor shaft outside, the rear end of motor shaft is fixed with the rotor holder, the outer ring of rotor holder is riveted with the rotor cover that sets up in the stator coil outside, be equipped with rotor magnetic tile on the rotor cover inner wall.

[0005] Preferably, the box inner chamber is provided with a partition plate, the partition plate is provided with a stator seat on the side facing the back cover plate, the motor shaft is arranged in the stator seat, and the stator coil is arranged on the stator seat. By setting the partition plate and the stator seat, the installation of the stator coil is facilitated, and the overall structure of the machine is more compact and reasonable.

[0006] Preferably, the stator seat is provided with a circuit board on the side facing the partition plate, the circuit board is electrically connected with the stator coil, the outer wall of the box is provided with a junction box, and the wires of the circuit board extend into the junction box through the box. By arranging the circuit board on the stator seat, the connection distance between the circuit board and the stator coil is shortened, thereby shortening the size of the whole machine.

[0007] As preferred, the outer ring of the rotor holder is provided with a riveting sleeve towards the front end cover side, the outer ring of the rotor holder is provided with a riveting groove towards the back cover plate side, the rotor sleeve is sleeved outside the riveting sleeve, the rotor sleeve extends out a riveting block towards the outer ring of the back cover plate side, and the riveting block is riveted in the riveting groove. With the above structure, the rotor sleeve is sleeved outside the riveting sleeve and then the riveting block is riveted in the riveting groove during assembly, so that the assembly efficiency of the rotor sleeve and the rotor holder is greatly improved.

[0008] As preferred, the rotor holder is provided with a positioning ring outside the bottom of the riveting sleeve, and the inner wall of the riveting block and the end face of the rotor sleeve towards the back cover plate side are respectively in abutment with the positioning ring. With the above structure, the assembly precision between the rotor sleeve and the rotor holder is improved.

[0009] As preferred, the output shaft is sleeved with an output gear at one end of the inner cavity of the box body, the box body is further provided with an intermediate gear shaft in transmission connection with the output gear, the intermediate gear shaft is sleeved with an input gear in transmission connection with the motor shaft, and the intermediate gear shaft and the output shaft are both arranged between the partition plate and the front end cover. With the above structure, the output power of the reduction motor is reduced according to requirements, so as to be suitable for more occasions.

[0010] As preferred, the outer surface of the front end cover of the box body is fixedly provided with a connecting sleeve, and the output shaft extends through the front end cover to the connecting sleeve. With the above structure, the connecting sleeve is used to replace the traditional pin connection, so that the installation and use of the whole machine are facilitated, and the installation strength is also enhanced.

[0011] As preferred, the output shaft is provided with a connecting flange at one end of the inner cavity of the connecting sleeve, and the distance between the end face of the connecting flange and the front end cover is less than the distance between the end face of the connecting sleeve and the front end cover. With the above structure, the installation and use of the whole machine are facilitated.

[0012] As preferred, the rear end of the connecting sleeve is provided with a fixing block, the connecting sleeve is bolted with the front end cover through the fixing block, the outer walls on both sides of the front end of the connecting sleeve are symmetrically provided with mounting blocks, and the mounting blocks are provided with a plurality of mounting holes. With the above structure, the assembly and use of the whole machine are facilitated.

[0013] The utility model discloses have simple structure, reasonable in design, convenient to assemble and install, compact overall size, high overall strength, long service life and the advantages such as. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a side view of the utility model embodiment;

[0015] Figure 2 It is the A-A section view of the utility model Figure 1 .

[0016] Figure 3is the utility model Figure 2 of B place enlarged view;

[0017] Figure 4 is the utility model rotor sleeve when not riveting structure section view;

[0018] Figure 5 is the utility model Figure 4 of C place enlarged view.

[0019] In the figure: 1, box;11, partition;12, stator seat;13, junction box;2, front end cover;21, connecting sleeve;22, fixed block;23, mounting block;24, mounting hole;3, back cover plate;4, motor shaft;41, rotor frame;42, riveting sleeve;43, riveting groove;44, positioning ring;5, output shaft;51, output gear;52, connecting flange;6, stator coil;7, rotor sleeve;71, rotor magnetic tile;72, riveting block;8, circuit board;9, intermediate gear shaft;91, input gear. Specific embodiments

[0020] The technical scheme of the utility model will be further specifically explained below by specific embodiments and in conjunction with the drawings. Embodiments

[0021] As Figures 1 to 5 indicated in a kind of high-strength brushless reduction motor, including box 1, the front and rear ends of the box 1 are respectively provided with front end cover 2, back cover plate 3, the box 1 is equipped with motor shaft 4, output shaft 5 with motor shaft 4 transmission connection.

[0022] The box 1 inner cavity is equipped with stator coil 6 on the outside of motor shaft 4, the box 1 inner cavity is equipped with partition 11, the partition 11 is equipped with stator seat 12 towards back cover plate 3 side, the motor shaft 4 is arranged in stator seat 12, the stator coil 6 is equipped on stator seat 12, by setting up partition 11 and stator seat 12, the installation of stator coil 6 is facilitated, also the whole machine structure is more compact and reasonable;The stator seat 12 is equipped with circuit board 8 towards the side of partition 11 of stator coil 6, the circuit board 8 is electrically connected with stator coil 6, the outer wall of the box 1 is equipped with junction box 13, the wire of circuit board 8 extends to junction box 13 in through box 1, circuit board 8 is arranged on stator seat 12, shortens the connection distance of circuit board 8 and stator coil 6, to shorten the size of whole machine.

[0023] The rear end of the motor shaft 4 is fixed with a rotor frame 41, the outer ring of the rotor frame 41 is riveted with a rotor sleeve 7 sleeved outside the stator coil 6, the inner wall of the rotor sleeve 7 is provided with a rotor magnetic tile 71, by adopting the outer rotor structure, riveting the rotor sleeve 7 on the rotor frame 41, the assembly efficiency between the rotor sleeve 7 and the rotor frame 41 is improved, the connection precision and strength are also increased, and the service life is further increased; the outer ring of the rotor frame 41 is provided with a riveting sleeve 42 towards the side of the front end cover 2, the outer ring of the rotor frame 41 is provided with a riveting groove 43 towards the side of the rear cover plate 3, the rotor sleeve 7 is sleeved outside the riveting sleeve 42, the outer ring of the rotor sleeve 7 extends out a riveting block 72 towards the side of the rear cover plate 3, the riveting block 72 is riveted in the riveting groove 43, when assembling, the rotor sleeve 7 is sleeved outside the riveting sleeve 42, and then the riveting block 72 is riveted in the riveting groove 43, so that the assembly efficiency of the rotor sleeve 7 and the rotor frame 41 is greatly improved; the outer side of the bottom of the riveting sleeve 42 is provided with a positioning ring 44, the inner wall of the riveting block 72 and the end face of the rotor sleeve 7 towards the side of the rear cover plate 3 are respectively abutted with the positioning ring 44, and the assembly precision between the rotor sleeve 7 and the rotor frame 41 is improved.

[0024] The output shaft 5 is sleeved with an output gear 51 at one end of the inner cavity of the box body 1, the box body 1 is further provided with an intermediate gear shaft 9 in transmission connection with the output gear 51, the intermediate gear shaft 9 is sleeved with an input gear 91 in transmission connection with the motor shaft 4, and the intermediate gear shaft 9 and the output shaft 5 are arranged between the partition plate 11 and the front end cover 2; according to requirements, the output power of the speed reducer motor is reduced, so that the speed reducer motor is suitable for more occasions.

[0025] The outer surface of the front end cover 2 of the box body 1 is fixedly provided with a connecting sleeve 21, the output shaft 5 extends into the connecting sleeve 21 through the front end cover 2, the connecting sleeve 21 replaces the traditional pin connection, the installation and use of the whole machine are facilitated, and the installation strength is also enhanced; the output shaft 5 is provided with a connecting flange 52 at one end of the inner cavity of the connecting sleeve 21, and the distance between the end face of the connecting flange 52 and the front end cover 2 is less than the distance between the end face of the connecting sleeve 21 and the front end cover 2. By adopting the above structure, the installation and use of the whole machine are facilitated; the rear end of the connecting sleeve 21 is provided with a fixing block 22, the connecting sleeve 21 is bolted with the front end cover 2 through the fixing block 22, the outer walls on both sides of the front end of the connecting sleeve 21 are symmetrically provided with mounting blocks 23, and the mounting blocks 23 are provided with a plurality of mounting holes 24, so that the assembly and use of the whole machine are facilitated.

[0026] The above-mentioned embodiment is only a preferred scheme of the present application, and does not limit the present application in any form, and other variants and modifications can be made without departing from the technical scheme recited in the claims.

Claims

1. A high-strength brushless reduction motor, comprising a box (1), the front and rear ends of the box (1) are respectively provided with a front end cover (2) and a rear cover plate (3), the box (1) is provided with a motor shaft (4) and an output shaft (5) in transmission connection with the motor shaft (4), characterized in that: The inner cavity of the box (1) is provided with a stator coil (6) outside the motor shaft (4), the rear end of the motor shaft (4) is fixedly provided with a rotor frame (41), the outer ring of the rotor frame (41) is riveted with a rotor sleeve (7) outside the stator coil (6), and the inner wall of the rotor sleeve (7) is provided with a rotor magnetic tile (71).

2. The high strength brushless gear motor of claim 1, wherein: The inner cavity of the box (1) is provided with a partition plate (11), the partition plate (11) is provided with a stator seat (12) on the side facing the rear cover plate (3), the motor shaft (4) is arranged in the stator seat (12), and the stator coil (6) is arranged on the stator seat (12).

3. The high strength brushless gear motor of claim 2, wherein: The stator seat (12) is provided with a circuit board (8) on the side of the stator coil (6) facing the partition plate (11), the circuit board (8) is electrically connected with the stator coil (6), the outer wall of the box (1) is provided with a junction box (13), and the wires of the circuit board (8) extend into the junction box (13) through the box (1).

4. The high strength brushless gear motor of claim 1, wherein: The outer ring of the rotor frame (41) is provided with a riveting sleeve (42) on the side facing the front end cover (2), the outer ring of the rotor frame (41) is provided with a riveting groove (43) on the side facing the rear cover plate (3), the rotor sleeve (7) is sleeved outside the riveting sleeve (42), the outer ring of the rotor sleeve (7) extends out of the riveting block (72) on the side facing the rear cover plate (3), and the riveting block (72) is riveted in the riveting groove (43).

5. The high strength brushless gear motor of claim 4, wherein: The outer ring of the rotor frame (41) is provided with a riveting sleeve (42) on the side facing the front end cover (2), the outer ring of the rotor frame (41) is provided with a riveting groove (43) on the side facing the rear cover plate (3), the rotor sleeve (7) is sleeved outside the riveting sleeve (42), the outer ring of the rotor sleeve (7) extends out of the riveting block (72) on the side facing the rear cover plate (3), and the riveting block (72) is riveted in the riveting groove (43).

6. The high strength brushless gear motor of claim 2, wherein: The outer ring of the rotor frame (41) is provided with a riveting sleeve (42) on the side facing the front end cover (2), the outer ring of the rotor frame (41) is provided with a riveting groove (43) on the side facing the rear cover plate (3), the rotor sleeve (7) is sleeved outside the riveting sleeve (42), the outer ring of the rotor sleeve (7) extends out of the riveting block (72) on the side facing the rear cover plate (3), and the riveting block (72) is riveted in the riveting groove (43).

7. The high strength brushless gear motor of claim 1, wherein: The outer ring of the rotor frame (41) is provided with a riveting sleeve (42) on the side facing the front end cover (2), the outer ring of the rotor frame (41) is provided with a riveting groove (43) on the side facing the rear cover plate (3), the rotor sleeve (7) is sleeved outside the riveting sleeve (42), the outer ring of the rotor sleeve (7) extends out of the riveting block (72) on the side facing the rear cover plate (3), and the riveting block (72) is riveted in the riveting groove (43).

8. The high-strength brushless gear motor of claim 7, wherein: The outer ring of the rotor frame (41) is provided with a riveting sleeve (42) on the side facing the front end cover (2), the outer ring of the rotor frame (41) is provided with a riveting groove (43) on the side facing the rear cover plate (3), the rotor sleeve (7) is sleeved outside the riveting sleeve (42), the outer ring of the rotor sleeve (7) extends out of the riveting block (72) on the side facing the rear cover plate (3), and the riveting block (72) is riveted in the riveting groove (43).

9. The high-strength brushless gear motor of claim 7, wherein: The outer ring of the rotor frame (41) is provided with a riveting sleeve (42) on the side facing the front end cover (2), the outer ring of the rotor frame (41) is provided with a riveting groove (43) on the side facing the rear cover plate (3), the rotor sleeve (7) is sleeved outside the riveting sleeve (42), the outer ring of the rotor sleeve (7) extends out of the riveting block (72) on the side facing the rear cover plate (3), and the riveting block (72) is riveted in the riveting groove (43).

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