A motor rotor assembly

Abstract

The utility model relates to motor technical field, concretely is a kind of motor rotor assembly, including pivot, bearing, magnetic shield sleeve, rotor assembly and permanent magnet, the pivot outside is connected with magnetic shield sleeve, the magnetic shield sleeve outside is connected with rotor assembly, the pivot outside is connected with bearing near two ends, the rotor assembly inside is equipped with multiple permanent magnets, the magnetic shield sleeve outside is equipped with multiple limit strips, the rotor assembly is by rotor core, axle slot, permanent magnet installation slot, first limit slot, second limit slot, plug-in hole, first end cover, connecting strip, plug-in column, second end cover, rotor fan and connecting sleeve is formed, the pivot, magnetic shield sleeve and connecting sleeve all are equipped with multiple limit holes.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a motor rotor assembly. Background Technology

[0002] Electric motors are widely used in many fields such as industrial production and daily life. As one of the key components of an electric motor, the quality of its design directly affects the motor's performance.

[0003] Existing motor rotor assemblies have many shortcomings: magnetic leakage can interfere with surrounding electronic equipment, and external impacts can affect the rotor.

[0004] Therefore, it is necessary to design a motor rotor assembly to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this utility model is to solve the problems in the prior art by proposing a motor rotor assembly.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An electric motor rotor assembly includes a shaft, bearings, a magnetic shielding sleeve, a rotor assembly, and permanent magnets. The magnetic shielding sleeve is externally connected to the shaft, and the rotor assembly is externally connected to the magnetic shielding sleeve. Bearings are connected to the shaft near both ends, and multiple sets of permanent magnets are provided inside the rotor assembly.

[0008] The magnetic shielding sleeve is provided with multiple sets of limiting strips on its exterior;

[0009] The rotor assembly consists of a rotor core, shaft groove, permanent magnet mounting groove, first limiting groove, second limiting groove, insertion hole, first end cover, connecting strip, insertion post, second end cover, rotor fan, and connecting sleeve. The rotor core is connected to the first end cover and the second end cover at both ends. The first end cover and the second end cover are provided with multiple sets of connecting strips and insertion posts at the ends of the first end cover and the second end cover away from the rotor core. The rotor core has multiple sets of first limiting grooves on its exterior, a shaft groove in the middle of the rotor core, multiple sets of second limiting grooves in the shaft groove, and multiple sets of permanent magnet mounting grooves and insertion holes at both ends of the rotor core.

[0010] Multiple sets of limiting holes are provided on the rotating shaft, the magnetic shielding sleeve, and the connecting sleeve.

[0011] Furthermore, the rotating shaft and the magnetic shielding sleeve are connected by a sleeve, the magnetic shielding sleeve and the shaft groove on the rotor core are connected by a sleeve, the magnetic shielding sleeve and the connecting sleeve on the first end cover and the second end cover are connected by a sleeve, and the magnetic shielding sleeve and the rotating shaft and the connecting sleeve are locked together by bolts.

[0012] Through the above technical solutions, the magnetic shielding sleeve can prevent magnetic leakage, enhance structural strength and optimize magnetic field distribution. It can effectively block the magnetic field from leaking from both ends of the rotor to the outside, avoid interference with surrounding electronic equipment, reduce electromagnetic noise generated during motor operation, have high mechanical strength, disperse the impact of external impacts on the rotor, improve the overall stability of the rotor, significantly reduce the magnetic flux density in the shaft, reduce the iron loss generated by the winding current magnetic field in the shaft, and improve motor efficiency.

[0013] Furthermore, the first end cover, the second end cover, and the rotor core are connected by a sleeve, the connecting strips on the first end cover and the second end cover are connected by bolts, the plug-in post and the plug-in hole are connected by a plug-in connection, and the first limiting groove and the connecting strip are connected by a sleeve.

[0014] The above technical solution uses the first end cap and the second end cap for limiting the position, and the connecting strip, plug post and connecting sleeve on the first end cap and the second end cap form a multiple limiting structure, which further improves the overall stability.

[0015] Furthermore, the limiting strip and the second limiting groove are connected by a sleeve.

[0016] Through the above technical solution, the limiting strip and the second limiting groove are connected by a sleeve to form a limiting structure at the connection, thereby improving the stability of the connection.

[0017] Furthermore, the permanent magnet and the permanent magnet mounting slot are connected by a sleeve.

[0018] The above technical solution forms a V-shaped rotor structure.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] In this utility model, the motor rotor assembly can achieve the following effects: 1. The magnetic shielding sleeve can prevent magnetic leakage, enhance structural strength and optimize magnetic field distribution. It can effectively block the magnetic field from leaking from both ends of the rotor to the outside, avoid interference with surrounding electronic equipment, and reduce the electromagnetic noise generated during motor operation. It has high mechanical strength, can disperse the impact of external impacts on the rotor, improve the overall stability of the rotor, significantly reduce the magnetic flux density in the shaft, reduce the iron loss generated by the winding current magnetic field in the shaft, and improve motor efficiency; 2. The first end cover and the second end cover provide limiting, and the connecting strip, plug post and connecting sleeve on the first end cover and the second end cover form a multi-limiting structure, which further improves the overall stability; 3. The limiting strip and the second limiting groove are connected by a sleeve to form a limiting structure at the connection, which improves the stability of the connection. Attached Figure Description

[0021] Figure 1 This is an overall structural diagram of the present invention;

[0022] Figure 2 This is a structural diagram of the rotor core of this utility model;

[0023] Figure 3 This is a structural diagram of the rotor core end face of this utility model;

[0024] Figure 4 This is a structural diagram of the first end cap of this utility model;

[0025] Figure 5 This is a structural diagram of the magnetic shielding sleeve of this utility model;

[0026] Figure 6 This is a structural diagram of the rotating shaft of this utility model.

[0027] In the diagram: 1. Shaft; 101. Limiting hole; 2. Bearing; 3. Magnetic shielding sleeve; 301. Limiting strip; 4. Rotor assembly; 401. Rotor core; 402. Shaft groove; 403. Permanent magnet mounting groove; 404. First limiting groove; 405. Second limiting groove; 406. Insertion hole; 407. First end cover; 408. Connecting strip; 409. Insertion post; 410. Second end cover; 411. Rotor fan; 412. Connecting sleeve; 5. Permanent magnet. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] Example 1

[0030] Reference Figures 1-6A motor rotor assembly includes a shaft 1, bearings 2, a magnetic shielding sleeve 3, a rotor assembly 4, and permanent magnets 5. The magnetic shielding sleeve 3 is externally connected to the shaft 1, and the rotor assembly 4 is externally connected to the magnetic shielding sleeve 3. Bearings 2 are connected to the shaft 1 near both ends. Multiple sets of permanent magnets 5 are disposed inside the rotor assembly 4. Multiple sets of limiting strips 301 are disposed externally on the magnetic shielding sleeve 3. The rotor assembly 4 consists of a rotor core 401, shaft grooves 402, permanent magnet mounting grooves 403, first limiting grooves 404, second limiting grooves 405, insertion holes 406, first end caps 407, connecting strips 408, insertion posts 409, second end caps 410, a rotor fan 411, and connecting sleeves 412. The rotor core 401 is connected to... The rotor core 401 has a first end cover 407 and a second end cover 410. The first end cover 407 and the second end cover 410 are provided with multiple sets of connecting strips 408 and plug-in posts 409 at the end of the first end cover 407 and the second end cover 410 away from the rotor core 401. The rotor core 401 has multiple sets of first limiting grooves 404 on its outside. The rotor core 401 has a shaft groove 402 in the middle. The shaft groove 402 has multiple sets of second limiting grooves 405 in its inside. The rotor core 401 has multiple sets of permanent magnet mounting grooves 403 and plug-in holes 406 at both ends. The rotating shaft 1, the magnetic shielding sleeve 3 and the connecting sleeve 412 are all provided with multiple sets of limiting holes 101.

[0031] Reference Figures 1-6 The rotating shaft 1 and the magnetic shielding sleeve 3 are connected by a sleeve. The magnetic shielding sleeve 3 and the shaft groove 402 on the rotor core 401 are connected by a sleeve. The magnetic shielding sleeve 3 and the connecting sleeve 412 on the first end cover 407 and the second end cover 410 are connected by a sleeve. The magnetic shielding sleeve 3, the rotating shaft 1, and the connecting sleeve 412 are locked together by bolts. The magnetic shielding sleeve 3 can prevent magnetic leakage, enhance structural strength, and optimize magnetic field distribution. It can effectively block the magnetic field from leaking from both ends of the rotor to the outside, avoid interference with surrounding electronic equipment, and reduce the electromagnetic noise generated during motor operation. It has high mechanical strength, can disperse the impact of external impacts on the rotor, improve the overall stability of the rotor, can significantly reduce the magnetic flux density in the shaft, reduce the iron loss generated by the winding current magnetic field in the shaft, and improve motor efficiency.

[0032] Reference Figures 1-4 The first end cover 407, the second end cover 410, and the rotor core 401 are connected by a sleeve. The connecting strip 408 on the first end cover 407 and the second end cover 410 are connected by bolts. The plug-in post 409 and the plug-in hole 406 are connected by a plug-in connection. The first limiting groove 404 and the connecting strip 408 are connected by a sleeve. The first end cover 407 and the second end cover 410 provide limiting. The connecting strip 408, plug-in post 409, and connecting sleeve 412 on the first end cover 407 and the second end cover 410 form a multi-limiting structure, which further improves the overall stability.

[0033] Reference Figures 1-5 The limiting strip 301 and the second limiting groove 405 are connected by a sleeve to form a limiting structure at the connection, which improves the stability of the connection.

[0034] Reference Figure 1 , Figure 2 and Figure 3 The permanent magnet 5 and the permanent magnet mounting groove 403 are connected by a sleeve to form a V-shaped rotor structure.

[0035] Example 2

[0036] The overall structure and working principle of this embodiment are basically the same as those of Embodiment 1. The main difference is that the common materials of the magnetic shielding sleeve 3 include brass, aluminum, stainless steel and resin, etc., which need to take into account both magnetic conductivity and mechanical strength.

[0037] The working process of this utility model is as follows: When using the motor rotor assembly, the magnetic isolation sleeve 3 can prevent magnetic leakage, enhance structural strength, and optimize magnetic field distribution. It can effectively block the magnetic field from leaking from both ends of the rotor to the outside, avoiding interference with surrounding electronic equipment. At the same time, it reduces the electromagnetic noise generated during motor operation. It has high mechanical strength, can disperse the impact of external impacts on the rotor, improve the overall stability of the rotor, and can significantly reduce the magnetic flux density in the shaft, reduce the iron loss generated by the winding current magnetic field in the shaft, and improve motor efficiency. It is limited by the first end cover 407 and the second end cover 410. The connecting strip 408, the plug post 409, and the connecting sleeve 412 on the first end cover 407 and the second end cover 410 form a multi-limiting structure, which further improves the overall stability. The limiting strip 301 and the second limiting groove 405 are connected by a sleeve to form a limiting structure at the connection, which improves the stability of the connection. The permanent magnet 5 and the permanent magnet mounting groove 403 are connected by a sleeve to form a V-shaped rotor structure.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A motor rotor assembly, comprising a shaft (1), a bearing (2), a magnetic shielding sleeve (3), a rotor assembly (4), and a permanent magnet (5), characterized in that: The rotating shaft (1) is externally connected to a magnetic shielding sleeve (3), the magnetic shielding sleeve (3) is externally connected to a rotor assembly (4), the rotating shaft (1) is externally connected to bearings (2) near both ends, and the rotor assembly (4) is internally provided with multiple sets of permanent magnets (5). The magnetic shielding sleeve (3) is provided with multiple sets of limiting strips (301) on its outside; The rotor assembly (4) consists of a rotor core (401), a shaft groove (402), a permanent magnet mounting groove (403), a first limiting groove (404), a second limiting groove (405), a plug-in hole (406), a first end cap (407), a connecting strip (408), a plug-in post (409), a second end cap (410), a rotor fan (411), and a connecting sleeve (412). The rotor core (401) is connected to both ends by the first end cap (407) and the second end cap (410), which are close to the rotor core (401). One end is provided with multiple sets of connecting strips (408) and plug-in posts (409). The first end cover (407) and the second end cover (410) are provided with a rotor fan (411) and a connecting sleeve (412) at the ends away from the rotor core (401). Multiple sets of first limiting grooves (404) are opened on the outside of the rotor core (401). A shaft groove (402) is opened in the middle of the rotor core (401). Multiple sets of second limiting grooves (405) are opened in the shaft groove (402). Multiple sets of permanent magnet mounting grooves (403) and plug-in holes (406) are opened at both ends of the rotor core (401). Multiple sets of limiting holes (101) are provided on the rotating shaft (1), the magnetic shielding sleeve (3) and the connecting sleeve (412).

2. The motor rotor assembly according to claim 1, characterized in that: The rotating shaft (1) and the magnetic shielding sleeve (3) are connected by a sleeve. The magnetic shielding sleeve (3) and the shaft groove (402) on the rotor core (401) are connected by a sleeve. The magnetic shielding sleeve (3) and the connecting sleeve (412) on the first end cover (407) and the second end cover (410) are connected by a sleeve. The magnetic shielding sleeve (3) and the rotating shaft (1) and the connecting sleeve (412) are locked together by bolts.

3. The motor rotor assembly according to claim 1, characterized in that: The first end cap (407), the second end cap (410), and the rotor core (401) are connected by a sleeve. The connecting strip (408) on the first end cap (407) and the second end cap (410) are connected by bolts. The plug-in post (409) and the plug-in hole (406) are connected by a plug-in connection. The first limiting groove (404) and the connecting strip (408) are connected by a sleeve.

4. A motor rotor assembly according to claim 1, characterized in that: The limiting strip (301) and the second limiting groove (405) are connected by a sleeve.

5. A motor rotor assembly according to claim 1, characterized in that: The permanent magnet (5) and the permanent magnet mounting groove (403) are connected by a sleeve.

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