IE5 asynchronous starting permanent magnet synchronous motor

Abstract

The utility model provides an IE5 asynchronous starting permanent magnet synchronous motor, which comprises a motor seat, a front end cover, an output shaft, a bearing seat, an insulation junction box, a fan cover and a rear end cover, a junction box seat is arranged at the end part of the motor seat, the insulation junction box is connected to the end part of the motor seat through the junction box seat, an I-shaped terminal seat is arranged in the insulation junction box, and the end part of the I-shaped terminal seat is connected with the fan cover. Two terminal strips of the I-shaped terminal seat are respectively provided with three wiring ports, the opening part of the insulating junction box is provided with a box cover through screws, the inner side part of the box cover is provided with an insulating pressing seat corresponding to the I-shaped terminal seat, the bottom end of the insulating pressing seat is provided with six contact pressing heads, and each contact pressing head corresponds to one wiring port. According to the utility model, the wiring of the wire group in the insulated junction box can be limited and fastened, and the power line connected into the insulated junction box can be limited at the same time, so that the wiring connected to the insulated junction box has good firmness and stability.

Description

Technical Field

[0001] This utility model belongs to the field of electric motor technology, and relates to the IE5 asynchronous starting permanent magnet synchronous motor. Background Technology

[0002] Compared with ordinary asynchronous motors, permanent magnet synchronous motors have advantages such as higher efficiency, higher power factor, smaller size, and energy saving. Therefore, permanent magnet synchronous motors are better suited to today's society, which emphasizes conservation and environmental protection.

[0003] Existing technologies, such as the asynchronous starting permanent magnet synchronous motor disclosed in patent application number CN202023349740.6, involve setting windings for driving a second rotor on a first rotor and setting squirrel cage bars on the periphery of the permanent magnet body of the second rotor, so that the first rotor starts first and enters a synchronous running state, and then the second rotor that drives the load gradually accelerates to the synchronous speed, allowing users to start the permanent magnet synchronous motor at a lower cost and more easily.

[0004] However, although the above-mentioned motors achieve the effect of easy starting and low starting cost, the wiring of the motor's junction box is not secure. The vibration of the motor causes the wiring terminals inside the junction box to loosen. Therefore, we designed an IE5 asynchronous starting permanent magnet synchronous motor. Utility Model Content

[0005] The purpose of this invention is to provide an IE5 asynchronous starting permanent magnet synchronous motor to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solution: An IE5 asynchronous starting permanent magnet synchronous motor includes a motor base, a front cover, an output shaft, a bearing housing, an insulating junction box, a fan cover, and a rear cover. The inner wall of the motor base is provided with a stator winding, and a rotor shaft is located at the center of the stator winding. The stepped portion of the front cover is bolted to the front end of the motor base. The bearing housing is integrally formed and located at the circular hole of the front cover, and the output shaft is connected to the rotor shaft of the motor base via a bearing. The rear cover is bolted to the rear end of the motor base, and an integrally formed bearing support end seat is located at the center of the rear cover. The inner ring of the bearing support end seat is connected to the rotor shaft of the motor base via a bearing.

[0007] The motor mount has a junction box at one end. The insulated junction box is connected to the end of the motor mount through the junction box. The interior of the insulated junction box has an I-shaped terminal block. Each of the two terminal strips of the I-shaped terminal block has three wiring ports. The opening of the insulated junction box is fitted with a cover by screws. The inner side of the cover is fitted with an insulating pressure seat corresponding to the I-shaped terminal block. The bottom of the insulating pressure seat has six contact heads, and each contact head corresponds to one wiring port.

[0008] In the aforementioned IE5 asynchronous starting permanent magnet synchronous motor, the annular groove of the front cover is provided with an integrally formed reinforcing groove. A grease inlet and a grease outlet are respectively provided at both ends of the reinforcing groove. An annular oil passage located on the stepped portion of the front cover is provided between the grease inlet and the grease outlet. Oil passages are provided at both the upper and lower ends of the annular oil passage, connecting to the bearing housing. The purpose of this design is to inject lubricating grease into the annular oil passage through the grease inlet, and into the bearing housing through the oil passages, while excess lubricating grease is discharged through the grease outlet. This ensures good lubrication while preventing excessive lubricating grease from affecting the motor's transmission efficiency.

[0009] Wherein: the diameter of the two oil passages is smaller than the diameter of the annular oil passage.

[0010] In the aforementioned IE5 asynchronous starting permanent magnet synchronous motor, an inlet crimping frame is provided on the inner wall of the insulating junction box. Three cross-shaped winding posts are provided on the surface of the inlet crimping frame, and an inlet seat corresponding to the inlet crimping frame is provided on the outer wall of the insulating junction box. This design aims to limit the power lines connected to the insulating junction box, ensuring good stability and preventing wiring defects caused by pulling on the power lines. It also allows for the branching and routing of the power line cores, facilitating better wiring.

[0011] In the aforementioned IE5 asynchronous starting permanent magnet synchronous motor, three screw fasteners are provided on the outer ring of the rear end cover. The fan cover is securely mounted to the rear end of the motor mount via these three screw fasteners. Multiple ventilation holes are provided on one side of the fan cover. This design aims to provide good protection and ventilation / heat dissipation through the fan cover, while also facilitating easier disassembly and replacement.

[0012] In the aforementioned IE5 asynchronous starting permanent magnet synchronous motor, the outer ring of the bearing support end seat is provided with multiple reinforcing ribs that connect to the rear end cover. This design ensures the robustness of the rear end cover and guarantees that the internally mounted bearing can withstand significant torque during rotation.

[0013] Compared with the prior art, the advantages of the IE5 asynchronous starting permanent magnet synchronous motor of this utility model are as follows: By setting an insulating pressure seat corresponding to the I-shaped terminal block on the inner side of the box cover, and setting six contact pressure heads at the bottom of the insulating pressure seat, with each contact pressure head corresponding to each wiring port, and setting an inlet crimping frame on the inner side wall of the insulating junction box, with three cross-shaped winding posts on the surface of the inlet crimping frame, it can not only limit and tighten the wiring of the wire group inside the insulating junction box, but also limit the power line connected to the insulating junction box. This makes the wiring connected to the insulating junction box have good firmness and stability. The vibration of the motor will not cause poor contact of the internal wiring, and the pulling of the power line will not cause poor wiring. At the same time, the core of the power line can be separated and routed for better wiring. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the IE5 asynchronous starting permanent magnet synchronous motor of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the insulating junction box for the IE5 asynchronous starting permanent magnet synchronous motor of this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the rear end cover of the IE5 asynchronous starting permanent magnet synchronous motor of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the front cover of the IE5 asynchronous starting permanent magnet synchronous motor of this utility model.

[0018] Figure 5 This is a schematic diagram of the front cover of the IE5 asynchronous starter permanent magnet synchronous motor of this utility model.

[0019] In the diagram, 1. Motor mount; 2. Front cover; 3. Output shaft; 4. Bearing housing; 5. Insulated junction box; 6. Junction box base; 7. I-shaped terminal block; 8. Wiring port; 9. Inlet socket; 10. Inlet crimping frame; 11. Cross-shaped winding post; 12. Insulated pressure seat; 13. Contact pressure head; 14. Box cover; 15. Rear end cover; 16. Bearing support end seat; 17. Reinforcing rib; 18. Screw fastening seat; 19. Reinforcing texture; 20. Ventilation hole; 21. Grease inlet; 22. Grease outlet; 23. Annular oil passage; 24. Oil passage; 25. Fan cover. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] like Figure 1 , Figure 2 , Figure 3 Figure 4 and Figure 5 As shown, this utility model is an IE5 asynchronous starting permanent magnet synchronous motor;

[0022] The main body of the motor includes a motor base 1, a front cover 2, an output shaft 3, a bearing housing 4, an insulating junction box 5, a fan cover 25, and a rear cover 15. The inner wall of the motor base 1 is provided with a stator winding, and a rotor shaft is provided at the center of the stator winding. A permanent magnet is provided on the rotor shaft. The stepped part of the front cover 2 is installed at the front end of the motor base 1 by bolts. The bearing housing 4 is integrally formed and is provided at the round hole of the front cover 2, and the output shaft 3 is connected to the rotor shaft of the motor base 1 through the bearing. The rear cover 15 is set at the rear end of the motor base 1 by bolts. An integrally formed bearing support end seat 16 is provided at the center of the rear cover 15. The inner ring of the bearing support end seat 16 is connected to the rotor shaft of the motor base 1 through the bearing.

[0023] The main working principle of the electric motor is based on the interaction between the rotating magnetic field generated by the stator winding and the magnetic field generated by the permanent magnet on the rotor. The permanent magnet can generate a strong magnetic field when rotating, thereby providing a greater output torque.

[0024] In order to ensure good axial and radial stability of the rotor shaft during rotation, the outer ring of the bearing support end seat 16 is provided with multiple reinforcing ribs 17 that are connected to the rear end cover 15.

[0025] Furthermore, three screw fasteners 18 are provided on the outer ring of the rear cover 15. The fan cover 25 is fastened to the rear end of the motor base 1 by the three screw fasteners 18. Multiple ventilation holes 20 are provided on one side of the fan cover 25 to better dissipate heat from the motor.

[0026] Example 1: A junction box seat 6 is provided at the end of the motor base 1. An insulating junction box 5 is connected to the end of the motor base 1 through the junction box seat 6. An I-shaped terminal block 7 is provided inside the insulating junction box 5. Three wiring ports 8 are provided at each of the two terminal strips of the I-shaped terminal block 7. A box cover 14 is installed at the opening of the insulating junction box 5 by screws. An insulating pressure seat 12 corresponding to the I-shaped terminal block 7 is provided on the inner side of the box cover 14. Six contact heads 13 are provided at the bottom of the insulating pressure seat 12, and each contact head 13 corresponds to each wiring port 8.

[0027] This design allows the terminals on the wire assembly to be connected to the wiring port 8. Each contact head 13 corresponds to each wiring port 8, ensuring that the terminals will not fall off when connected to the wiring port 8. This prevents the terminals from detaching from the wiring port 8 and avoids poor contact.

[0028] Furthermore, an inlet crimping frame 10 is provided on the inner wall of the insulating junction box 5, and three cross-shaped wire-winding posts 11 are provided on the surface of the inlet crimping frame 10. An inlet seat 9 corresponding to the inlet crimping frame 10 is provided on the outer wall of the insulating junction box 5. This can limit the power line connected to the inside of the insulating junction box 5, so that the power line connected to the insulating junction box 5 has good firmness and stability, and the pulling of the power line will not cause poor wiring.

[0029] Example 2: To add lubricating grease to the bearing housing for bearing lubrication and to avoid excessive lubricating grease affecting the transmission efficiency of the motor, an integrally formed reinforcing groove 19 is provided in the annular groove of the front cover 2. A grease inlet 21 and a grease outlet 22 are respectively provided at both ends of the reinforcing groove 19. An annular oil passage 23 located at the stepped part of the front cover 2 is provided between the grease inlet 21 and the grease outlet 22. Oil passages 24 are provided at both the upper and lower ends of the annular oil passage 23, and the oil passages 24 connect to the bearing housing 4.

[0030] Specifically, to ensure that lubricating grease can enter the two oil passages 24 and that the excess grease can flow to the grease outlet 22, the channel diameter of the two oil passages 24 is smaller than the oil passage diameter of the annular oil passage 23.

[0031] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. An IE5 asynchronous starting permanent magnet synchronous motor, comprising a motor base (1), a front end cover (2), an output shaft (3), a bearing housing (4), an insulating junction box (5), a fan cover (25), and a rear end cover (15), wherein the inner wall of the motor base (1) is provided with a stator winding and a rotor shaft is provided at the center of the stator winding; the stepped portion of the front end cover (2) is bolted to the front end of the motor base (1); the bearing housing (4) is integrally formed and provided at the round hole of the front end cover (2), and the output shaft (3) is connected to the rotor shaft of the motor base (1) through the bearing; the rear end cover (15) is bolted to the rear end of the motor base (1); an integrally formed bearing support end seat (16) is provided at the center of the rear end cover (15); the inner ring of the bearing support end seat (16) is connected to the rotor shaft of the motor base (1) through the bearing; characterized in that... ； The motor mount (1) is provided with a junction box seat (6) at its end. The insulating junction box (5) is connected to the end of the motor mount (1) through the junction box seat (6). The insulating junction box (5) is provided with an I-shaped terminal block (7) inside. The two terminal strips of the I-shaped terminal block (7) are provided with three wiring ports (8). The opening of the insulating junction box (5) is fitted with a cover (14) by screws. The inner side of the cover (14) is provided with an insulating pressure seat (12) corresponding to the I-shaped terminal block (7). The bottom of the insulating pressure seat (12) is provided with six contact heads (13) and each contact head (13) corresponds to each wiring port (8).

2. The IE5 asynchronous starting permanent magnet synchronous motor according to claim 1, characterized in that, The front cover (2) has an integrally formed reinforcing groove (19) at the annular groove. The two ends of the reinforcing groove (19) are respectively provided with a grease inlet (21) and a grease outlet (22). An annular oil passage (23) located at the step of the front cover (2) is provided between the grease inlet (21) and the grease outlet (22). The upper and lower ends of the annular oil passage (23) are provided with oil passages (24) and are connected to the bearing seat (4) through the oil passages (24).

3. The IE5 asynchronous starting permanent magnet synchronous motor according to claim 2, characterized in that, The diameter of the two oil passages (24) is smaller than the diameter of the annular oil passage (23).

4. The IE5 asynchronous starting permanent magnet synchronous motor according to claim 1, characterized in that, The inner wall of the insulating junction box (5) is provided with an inlet crimping frame (10), and the surface of the inlet crimping frame (10) is provided with three cross-shaped winding posts (11). The outer wall of the insulating junction box (5) is provided with an inlet seat (9) corresponding to the inlet crimping frame (10).

5. The IE5 asynchronous starting permanent magnet synchronous motor according to claim 1, characterized in that, The outer ring of the rear cover (15) is provided with three screw fasteners (18), and the fan cover (25) is fastened to the rear end of the motor base (1) by the three screw fasteners (18). The fan cover (25) is provided with multiple ventilation holes (20) on one side.

6. The IE5 asynchronous starting permanent magnet synchronous motor according to claim 1, characterized in that, The outer ring of the bearing support end seat (16) is provided with multiple reinforcing ribs (17) that are connected to the rear end cover (15).

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