Shaded pole motor cage type rotor structure

Abstract

The utility model relates to the field of cage type rotors, in particular to a cage type rotor structure of a shaded pole motor. The technical problem that in the using process of an existing shaded pole motor, due to the fact that a shaft and a cast-aluminum rotor are of a clamped integrated structure, after the shaded pole motor is used for a long time, the two ends of the cast-aluminum rotor are damaged due to vibration transmission is solved. According to the technical scheme, the shaded pole motor cage type rotor structure comprises a rotating shaft assembly, an end cover assembly, a sealing cover assembly and an inner core assembly. According to the utility model, the special reinforcing structure is arranged to reinforce the split-type end cover structure so as to prevent the split-type end cover structure from deforming under the influence of vibration, so that the problem that the shaft and the cast-aluminum rotor are of a clamped integrated structure in the use process of the existing shaded pole motor can be solved to a certain extent, and the service life of the shaded pole motor is prolonged. And after the cast-aluminum rotor is used for a long time, the two end parts of the cast-aluminum rotor are damaged due to vibration transmission.

Description

Technical Field

[0001] The utility model relates to the field of cage rotors, in particular to a cage rotor structure of a shaded-pole motor. Background Art

[0002] Shaded pole motor, also known as shaded pole motor, is a type of single-phase AC motor, usually using cage-type skewed slot cast aluminum rotor. It is divided into salient pole shaded pole motor and hidden pole shaded pole motor according to the different stator shape structure. Shaded pole motor is mainly composed of rotor assembly, stator assembly, coil assembly, bracket assembly and connecting fasteners. The rotor assembly is mainly composed of a cast aluminum rotor, a shaft, a thrust washer to prevent the rotor from moving back and forth, and a gasket to adjust the amount of movement; the stator assembly is mainly composed of a short-circuit ring and a main stator core; the coil assembly is mainly composed of a coil, a skeleton, lead wires or a thermal protector and related insulating wrapping materials; the bracket assembly is divided into a front bracket assembly and a rear bracket assembly according to the different installation positions of the shaft extension end and the non-shaft extension end. Among the many components of the shaded pole motor, the rotor can be said to be a more important structure, but the existing cage-type rotor is often a cast aluminum rotor and a shaft clamped into an integrated structure. During its rotation, it often transmits the vibration generated by the rotation of the shaft to the cast aluminum rotor, which can easily cause deformation of the two ends of the cast aluminum rotor after long-term use, and thus easily affect the use cost of the entire shaded pole motor. Utility Model Content

[0003] In order to overcome the problem that during the use of the existing shaded pole motor, the shaft and the cast aluminum rotor are an integrated structure with a clamping connection, which may cause the two ends of the cast aluminum rotor to be damaged due to vibration transmission after long-term use.

[0004] The technical solution of the utility model is: a cage-type rotor structure of a shaded-pole motor, comprising a rotating shaft assembly, an end cover assembly, a cover assembly and an inner core assembly; the inner core assembly is arranged on the outer side of the rotating shaft assembly; the end cover assembly is arranged on the outer side of the inner core assembly; and the cover assembly is arranged at the front end of the inner core assembly.

[0005] Preferably, the end cover assembly is used to achieve outer protection of the inner core assembly and guidance of the magnetic field. The cover assembly can also be used to fix and lock the shaft assembly. Finally, the inner core assembly can be used to achieve use of the rotor.

[0006] Preferably, the shaft assembly includes a fixed shaft, a locking keyway, a reinforcement plate and anti-slip grooves; a plurality of locking keyways are provided at the front end of the fixed shaft; and the plurality of locking keyways are arranged in a circular shape, so that the fixed shaft can be fixed by providing a plurality of locking keyways.

[0007] Preferably, a plurality of reinforcing sheets are fixedly connected to the outer side of the fixed rotating shaft; and an anti-skid pattern is provided at the rear end of the fixed rotating shaft, so that auxiliary fixation of the fixed rotating shaft can be achieved through the anti-skid pattern.

[0008] Preferably, the end cover assembly includes a first end ring, a cast aluminum bar, a second end ring, a connecting column, a rotor blade and a positioning plate; a second end ring is arranged on the outer side of the anti-slip pattern; a plurality of cast aluminum bars are arranged at the front end of the second end ring, and the cast aluminum bars can be fixed by the first end ring and the second end ring.

[0009] Preferably, a first end ring is provided at the front end of the cast aluminum bar; a plurality of connecting columns are provided on the first end ring and the second end ring; a rotor blade is provided between two adjacent connecting columns; a plurality of positioning plates are fixedly connected to the inner side of the first end ring, which can realize auxiliary heat dissipation of the rotor structure through the rotor blades.

[0010] Preferably, the sealing assembly includes a clamping ring, a limiting plate and a positioning block; a clamping ring is arranged at the front end of the positioning plate; a plurality of limiting plates are fixedly connected to the outer side of the clamping ring; a plurality of positioning blocks are fixedly connected to the rear end of the clamping ring, and the positioning blocks can be used to realize rapid positioning and installation of the clamping ring.

[0011] Preferably, the inner core assembly includes a rotor core, an axis through slot, an anti-skewness slot, a reinforcement frame and a connecting ring; the rotor core is arranged on the inner side of the cast aluminum bar; an axis through slot is opened on the inner side of the rotor core; a plurality of anti-skewness slots are arranged on the outer side of the axis through slot; a connecting ring is arranged at the front and rear ends of the rotor core; a plurality of reinforcement frames are arranged on the inner side of the connecting ring, which can realize the synchronous rotation of the fixed rotating shaft through the plurality of anti-skewness slots.

[0012] Beneficial effects of the utility model:

[0013] 1. The split end cover structure is reinforced by setting a special reinforcement structure to prevent it from deforming under the influence of vibration, thereby solving the problem that the two ends of the cast aluminum rotor are damaged due to vibration transmission after long-term use in the existing shaded pole motor because the shaft and the cast aluminum rotor are an integrated structure connected by clamping.

[0014] 2. The connection between the rotor core and the end ring is achieved by setting a connecting ring, and the deformation reinforcement of the connecting ring is achieved by setting a plurality of reinforcing frames, thereby improving the service life of the entire cage rotor structure of the shaded pole motor to a certain extent, and thus greatly improving the comfort of use of the cage rotor structure of the entire shaded pole motor;

[0015] 3. By setting a clamping ring, the connection between the rotor core and the fixed shaft can be locked, and by setting an anti-skew groove, a positioning plate and a limit plate, the anti-separation reinforcement between the rotor core and the fixed shaft can be achieved. This can, to a certain extent, make it convenient for users to quickly disassemble and assemble the rotor core and the fixed shaft, thereby greatly improving the convenience of using the entire shaded-pole motor cage rotor structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 What is shown is a first three-dimensional structural schematic diagram of the cage rotor structure of the shaded-pole motor of the utility model;

[0017] Figure 2 What is shown is a second three-dimensional structural schematic diagram of the cage rotor structure of the shaded-pole motor of the utility model;

[0018] Figure 3 The schematic diagram of the decomposition structure of the cage rotor structure of the shaded-pole motor of the utility model is shown;

[0019] Figure 4 What is shown is a three-dimensional structural schematic diagram of the inner core component of the cage rotor structure of the shaded-pole motor of the present invention.

[0020] Explanation of the reference numerals: 1. shaft assembly; 2. end cover assembly; 3. cover assembly; 4. inner core assembly; 101. fixed shaft; 102. locking keyway; 103. reinforcement plate; 104. anti-slip pattern; 201. first end ring; 202. cast aluminum strip; 203. second end ring; 204. connecting column; 205. rotor blade; 206. positioning plate; 301. clamping ring; 302. limit plate; 303. positioning block; 401. rotor core; 402. shaft slot; 403. anti-skew slot; 404. reinforcement frame; 405. connecting ring. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] See also Figure 1-2The utility model provides an embodiment: a cage rotor structure of a shaded-pole motor, comprising a shaft assembly 1, an end cover assembly 2, a cover assembly 3 and an inner core assembly 4; the inner core assembly 4 is arranged on the outer side of the shaft assembly 1; the end cover assembly 2 is arranged on the outer side of the inner core assembly 4; the cover assembly 3 is arranged on the front end of the inner core assembly 4, the shaft assembly 1 comprises a fixed shaft 101, a locking key groove 102, a reinforcement sheet 103 and an anti-slip pattern 104; the front end of the fixed shaft 101 is provided with a plurality of locking key grooves 102; and the plurality of locking key grooves 102 are arranged in a circumferential shape, and the fixed shaft 101 can be fixed by the arrangement of the plurality of locking key grooves 102, and the outer side of the fixed shaft 101 is fixedly connected with a plurality of reinforcement sheets 103; the rear end of the fixed shaft 101 is provided with an anti-slip pattern 104, which can be 04 to achieve auxiliary fixation of the fixed rotating shaft 101, the end cover assembly 2 includes a first end ring 201, a cast aluminum strip 202, a second end ring 203, a connecting column 204, a rotor fan blade 205 and a positioning piece 206; the outer side of the anti-slip pattern 104 is provided with a second end ring 203; the front end of the second end ring 203 is provided with a plurality of cast aluminum strips 202, which can be fixed to the cast aluminum strip 202 by the first end ring 201 and the second end ring 203, and the front end of the cast aluminum strip 202 is provided with a first end ring 201; the first end ring 201 and the second end ring 203 are both provided with a plurality of connecting columns 204; a rotor fan blade 205 is provided between two adjacent connecting columns 204; a plurality of positioning pieces 206 are fixedly connected to the inner side of the first end ring 201, which can achieve auxiliary heat dissipation of the rotor structure through the rotor fan blades 205.

[0023] See also Figure 3-4 In this embodiment, the cover assembly 3 includes a clamping ring 301, a limiting piece 302 and a positioning block 303; the front end of the positioning piece 206 is provided with a clamping ring 301; the outer side of the clamping ring 301 is fixedly connected with a plurality of limiting pieces 302; the rear end of the clamping ring 301 is fixedly connected with a plurality of positioning blocks 303, and the clamping ring 301 can be quickly positioned and installed by setting the positioning blocks 303. The inner core assembly 4 includes a rotor core 401, a shaft groove 402, an anti- A deflection groove 403, a reinforcement frame 404 and a connecting ring 405; a rotor core 401 is arranged on the inner side of the cast aluminum bar 202; an axle groove 402 is opened on the inner side of the rotor core 401; a plurality of anti-deflection grooves 403 are arranged on the outer side of the axle groove 402; a connecting ring 405 is arranged at the front and rear ends of the rotor core 401; a plurality of reinforcement frames 404 are arranged on the inner side of the connecting ring 405, and the synchronous rotation of the fixed shaft 101 can be achieved through the plurality of anti-deflection grooves 403.

[0024] During operation, the entire rotor structure can be clamped together by connecting the first end ring 201 and the second end ring 203 with the connecting column 204. After the installation is completed, an induced current will be generated through the pole winding, causing the magnetic flux of the stator pole covered by the pole winding and the uncovered part to rotate in the direction of the covered part, so as to realize the rotation adjustment of the fixed shaft 101.

[0025] At the same time, during the use of the cage-type rotor structure of the shaded-pole motor, the transition of the connection between the rotor core 401 and the end ring can be achieved by setting a connecting ring 405, and the deformation reinforcement of the connecting ring 405 can be achieved by setting a plurality of reinforcing frames 404, and the locking of the connection between the rotor core 401 and the fixed shaft 101 can be achieved by setting a clamping ring 301, and the anti-separation reinforcement between the rotor core 401 and the fixed shaft 101 can be achieved by setting an anti-skew groove 403, a positioning plate 206 and a limit plate 302.

[0026] Through the above steps, a special reinforcement structure is set to reinforce the split end cover structure to prevent it from deforming under the influence of vibration. This can solve the problem that the two ends of the cast aluminum rotor are damaged due to vibration transmission after long-term use during the use of the existing shaded-pole motor because the shaft and the cast aluminum rotor are an integrated structure with a snap-on connection. At the same time, the end cover assembly 2 can also be used to protect the outer side of the inner core assembly 4 and guide the magnetic field. The cover assembly 3 can also be used to fix and lock the rotating shaft assembly 1. Finally, the inner core assembly 4 can be used to use the rotor.

[0027] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A cage rotor structure of a shaded-pole motor, comprising a rotating shaft assembly (1); characterized in that: It also comprises an end cover assembly (2), a cover assembly (3) and an inner core assembly (4); the inner core assembly (4) is arranged on the outer side of the shaft assembly (1); the end cover assembly (2) is arranged on the outer side of the inner core assembly (4); and the cover assembly (3) is arranged at the front end of the inner core assembly (4).

2. The cage rotor structure of a shaded-pole motor according to claim 1, characterized in that: The rotating shaft assembly (1) comprises a fixed rotating shaft (101), a locking key slot (102), a reinforcing sheet (103) and an anti-slip groove (104); a front end portion of the fixed rotating shaft (101) is provided with a plurality of locking key slots (102); and the plurality of locking key slots (102) are arranged in a circumferential shape.

3. The cage rotor structure of a shaded-pole motor according to claim 2, characterized in that: A plurality of reinforcing sheets (103) are fixedly connected to the outer side of the fixed rotating shaft (101); and an anti-slip pattern (104) is arranged at the rear end of the fixed rotating shaft (101).

4. The cage rotor structure of a shaded-pole motor according to claim 3, characterized in that: The end shield assembly (2) comprises a first end ring (201), a cast aluminum strip (202), a second end ring (203), a connecting column (204), a rotor fan blade (205) and a positioning piece (206); the second end ring (203) is arranged on the outer side of the anti-slip pattern (104); and a plurality of cast aluminum strips (202) are arranged at the front end of the second end ring (203).

5. The cage rotor structure of a shaded-pole motor according to claim 4, characterized in that: A first end ring (201) is provided at the front end of the cast aluminum strip (202); a plurality of connecting columns (204) are provided on the first end ring (201) and the second end ring (203); a rotor blade (205) is provided between two adjacent connecting columns (204); and a plurality of positioning pieces (206) are fixedly connected to the inner side of the first end ring (201).

6. The cage rotor structure of a shaded-pole motor according to claim 5, characterized in that: The cover assembly (3) comprises a clamping ring (301), a limiting plate (302) and a positioning block (303); the front end of the positioning plate (206) is provided with a clamping ring (301); the outer side of the clamping ring (301) is fixedly connected to a plurality of limiting plates (302); and the rear end of the clamping ring (301) is fixedly connected to a plurality of positioning blocks (303).

7. The cage rotor structure of a shaded-pole motor according to claim 4, characterized in that: The inner core component (4) comprises a rotor core (401), an axle-penetrating groove (402), an anti-deviation groove (403), a reinforcing frame (404) and a connecting ring (405); the rotor core (401) is arranged on the inner side of the cast aluminum bar (202); the axle-penetrating groove (402) is provided on the inner side of the rotor core (401); a plurality of anti-deviation grooves (403) are arranged on the outer side of the axle-penetrating groove (402); a connecting ring (405) is arranged at the front and rear ends of the rotor core (401); and a plurality of reinforcing frames (404) are arranged on the inner side of the connecting ring (405).

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