A ceiling fan motor

Abstract

The utility model discloses a ceiling fan motor, including outer rotor subassembly and stator subassembly, outer rotor subassembly includes the casing and rotor core, and the casing is equipped with two bearings, and stator subassembly includes motor shaft and stator core, and stator core fixed mounting is at the periphery of motor shaft, and the middle part of motor shaft is through bearing and is installed in the casing, its stator subassembly still includes insulating framework, and stator core includes annular yoke part and a plurality of tooth parts that stretch out from annular yoke part outward, and insulating framework includes wrapping insulating yoke part, insulating tooth part and wrapping the insulating sleeve of non axle extension end of motor shaft, and insulating yoke part is connected with insulating sleeve by insulating apron, and the cavity is formed between insulating apron and the inner ring of insulating yoke part, and the coil winding is wound outside insulating tooth part, and control board and interface board are installed in the cavity, and the wire head of coil winding is welded on interface board, and interface board is electrically connected with control board. Control board and interface board install in the cavity of stator core middle, and the structure of stator subassembly is compact, and the volume of ceiling fan motor is small.

Description

Technical Field

[0001] This utility model relates to a ceiling fan motor. Background Technology

[0002] Existing ceiling fan motors include an external rotor assembly and a stator assembly. The external rotor assembly includes a housing, with a rotor core mounted on the lower surface of the housing. A shaft sleeve is located inside the housing, and two bearings are installed within the shaft. The stator assembly includes a motor shaft and a stator core. The stator core is fixedly fitted outside the motor shaft, and the middle portion of the motor shaft is fitted into the housing via bearings. This structure is relatively complex and bulky. Utility Model Content

[0003] This utility model provides a ceiling fan motor to solve the problem of the large size of existing ceiling fan motors.

[0004] The technical solution of this utility model is implemented as follows:

[0005] The purpose of this utility model is to provide a ceiling fan motor, including an outer rotor assembly and a stator assembly. The outer rotor assembly includes a housing and a rotor core. The housing has two bearing chambers, and bearings are installed in the bearing chambers. The stator assembly includes a motor shaft and a stator core. The stator core is fixedly installed around the motor shaft. The middle part of the motor shaft is fitted into the housing through a bearing. The stator assembly further includes an insulating frame. The stator core includes an annular yoke and several teeth extending outward from the annular yoke. The insulating frame includes an insulating yoke that wraps around the annular yoke, insulating teeth that wrap around the teeth, and an insulating sleeve that wraps around the non-shaft extension end of the motor shaft. The insulating yoke and the insulating sleeve are connected by an insulating cover plate. A cavity is formed between the insulating cover plate and the inner ring of the insulating yoke. A coil winding is wound around the insulating teeth. A control board and an interface board are installed in the cavity. The wire ends of the coil winding are plugged into / welded to the interface board. The interface board is electrically connected to the control board.

[0006] The inner end face of the aforementioned insulating yoke faces the housing, the insulating cover plate is connected to the inner end face of the insulating yoke, the inner ring of the outer end face of the insulating yoke has an axially protruding flange, the flange has a notch, and the wire end of the coil winding passes through the notch and is inserted / welded to the interface plate.

[0007] The inner side of the aforementioned insulating cover is provided with several mounting posts, and the interface board and control board are fixed to the mounting posts by screws.

[0008] The inner side of the aforementioned insulating cover plate is provided with several first reinforcing ribs.

[0009] The side wall of the non-shaft extension end of the motor shaft is provided with a groove, and the insulating sleeve fills the groove.

[0010] The stator core described above is formed by rolling a strip of cold-rolled low-carbon steel sheet into a circle.

[0011] The aforementioned housing includes a radial end plate and an annular side plate extending radially from the outer periphery of the end plate. The rotor core is mounted on the inner wall of the annular side plate, and a magnetic tile positioning seat is installed on the inner side of the rotor core. The magnetic tile is circumferentially bonded to the inner wall of the magnetic tile positioning seat.

[0012] The aforementioned housing has a shaft protruding outward from its center, and the two bearing chambers are located inside the shaft, with a partition block between the two bearing chambers.

[0013] Several second reinforcing ribs are provided between the outer side of the shaft cylinder and the end plate as described above.

[0014] The aforementioned housing is joined to the rotor core by casting.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] 1. The ceiling fan motor includes an outer rotor assembly and a stator assembly. The outer rotor assembly includes a housing and a rotor core. The housing has two bearing chambers, and bearings are installed in the bearing chambers. The stator assembly includes a motor shaft and a stator core. The stator core is fixedly installed on the periphery of the motor. The middle part of the motor shaft is fitted into the housing through a bearing. The stator assembly also includes an insulating frame. The stator core includes an annular yoke and several teeth extending outward from the annular yoke. The insulating frame includes an insulating yoke that wraps around the annular yoke, insulating teeth that wrap around the teeth, and an insulating sleeve that wraps around the non-shaft extension end of the motor shaft. The insulating yoke and the insulating sleeve are connected by an insulating cover plate. A cavity is formed between the insulating cover plate and the inner ring of the insulating yoke. A coil winding is wound around the insulating teeth. A control board and an interface board are installed in the cavity. The wire ends of the coil winding are plugged into / welded to the interface board. The interface board is electrically connected to the control board. The control board and interface board are installed in the cavity in the middle of the stator core. The stator assembly has a compact structure and the ceiling fan motor is small in size. After the control board is integrated, the fan can be used to disturb the airflow, which can increase the heat dissipation effect on the control board.

[0017] 2. Other advantages of this utility model are described in detail in the embodiments section. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a ceiling fan motor provided in an embodiment of the present utility model;

[0019] Figure 2 A schematic diagram of the ceiling fan motor from another angle;

[0020] Figure 3 for Figure 2 Enlarged view of point A;

[0021] Figure 4 This is a top view of the ceiling fan motor.

[0022] Figure 5 for Figure 4 A cross-sectional view of BB;

[0023] Figure 6 This is an exploded view of a ceiling fan motor.

[0024] Figure 7 This is a schematic diagram of the stator assembly in a ceiling fan motor;

[0025] Figure 8 This is a structural schematic diagram of the stator assembly from another angle. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] like Figures 1 to 8 As shown, this embodiment provides a ceiling fan motor, including an outer rotor assembly 1 and a stator assembly 2. The outer rotor assembly 1 includes a housing 11 and a rotor core 12. The housing 11 has two bearing chambers 111, and bearings 13 are installed in the bearing chambers 111. The stator assembly 2 includes a motor shaft 21 and a stator core 22. The stator core 22 is fixedly installed around the motor shaft 21. The motor shaft 21 is a hollow shaft, and the middle part of the motor shaft 21 is fitted into the housing 11 through the bearings 13. The stator assembly 2 also includes an insulating frame 23. The stator core 22 includes an annular yoke 221 and several... The dry tooth section 222 and the insulating frame 23 include an insulating yoke 231 that wraps around the annular yoke 221, an insulating tooth section 232 that wraps around the tooth section 222, and an insulating sleeve 233 that wraps around the non-shaft extension end of the motor shaft 21. The insulating yoke 231 and the insulating sleeve 233 are connected by an insulating cover plate 234. A cavity 230 is formed between the insulating cover plate 234 and the inner ring of the insulating yoke 231. A coil winding 24 is wound around the outside of the insulating tooth section 232. A control board 31 and an interface board 32 are installed in the cavity 230. The wire ends of the coil winding 24 are plugged into / soldered to the interface board 32. The interface board 32 is electrically connected to the control board 31.

[0028] The ceiling fan motor, control board 31 and interface board 32 are installed in the cavity 230 in the middle of the stator core 22. The stator assembly 2 has a compact structure and the ceiling fan motor is small in size. After the control board 31 is integrated, the fan can be used to disturb the airflow and increase the heat dissipation effect on the control board 31.

[0029] The inner end face of the insulating yoke 231 mentioned above faces the housing 11. The insulating cover plate 234 is connected to the inner end face of the insulating yoke 231. The inner ring of the outer end face of the insulating yoke 231 has an axially protruding flange 235. The flange 235 has a notch 236. The wire end of the coil winding 24 passes through the notch 236 and is inserted / welded onto the interface plate 32.

[0030] The inner side of the aforementioned insulating cover plate 234 is provided with several mounting posts 237, and the interface plate 32 and the control plate 31 are fixed to the mounting posts 237 by screws. The interface plate 32 and the control plate 31 are easy to install.

[0031] The insulating cover plate 234 described above has a plurality of first reinforcing ribs 238 on its inner side. The first reinforcing ribs 238 enhance the strength of the insulating cover plate 234.

[0032] The non-shaft extension end of the motor shaft 21 described above has a groove 211 on its side wall, and the insulating sleeve 233 fills the groove 211. The groove 211 prevents rotation between the motor shaft 21 and the insulating frame 23.

[0033] The stator core 22 described above is formed by rolling a strip of cold-rolled low-carbon steel sheet.

[0034] The aforementioned housing 11 includes a radial end plate 112 and an annular side plate 113 extending radially from the outer periphery of the end plate 112. The rotor core 12 is mounted on the inner wall of the annular side plate 113. A magnetic tile positioning seat 15 is mounted on the inner side of the rotor core 12. The magnetic tile 14 is circumferentially bonded to the inner wall of the magnetic tile positioning seat 15.

[0035] The aforementioned housing 11 has a shaft sleeve 114 protruding outward from its center. The two bearing chambers 111 are disposed inside the shaft sleeve 114, and a partition block 115 is provided between the two bearing chambers 111. The axial dimension of the ceiling fan motor is smaller.

[0036] A retaining ring is installed in the middle of the motor shaft 21. The retaining ring is located above the top of the shaft sleeve 114. The top of the insulating sleeve 233 extends into one of the bearing chambers 111 of the shaft sleeve 114. The two bearings are positioned by the insulating sleeve 233 and the retaining ring, respectively.

[0037] Several second reinforcing ribs 116 are provided between the outer side of the aforementioned shaft cylinder 114 and the end plate 112. This makes the positioning of the two bearings 13 more convenient.

[0038] The aforementioned housing 11 is made of aluminum alloy and is joined to the rotor core 12 by casting.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A ceiling fan motor, comprising an outer rotor assembly (1) and a stator assembly (2), the outer rotor assembly (1) comprising a housing (11) and a rotor core (12), the housing (11) having two bearing chambers (111) for which bearings (13) are installed, the stator assembly (2) comprising a motor shaft (21) and a stator core (22), the stator core (22) being fixedly mounted around the motor shaft (21), the middle portion of the motor shaft (21) being fitted into the housing (11) via bearings (13), characterized in that: The stator assembly (2) further includes an insulating frame (23). The stator core (22) includes an annular yoke (221) and a plurality of teeth (222) extending outward from the annular yoke (221). The insulating frame (23) includes an insulating yoke (231) that wraps around the annular yoke (221), insulating teeth (232) that wrap around the teeth (222), and an insulating sleeve (233) that wraps around the non-shaft extension end of the motor shaft (21). The insulating cover plate (234) connects the insulating sleeve (233) to the insulating cover plate (234) and the inner ring of the insulating yoke (231) to form a cavity (230). The insulating tooth (232) is wound with a coil winding (24). The control board (31) and the interface board (32) are installed in the cavity (230). The wire ends of the coil winding (24) are plugged into / soldered on the interface board (32). The interface board (32) is electrically connected to the control board (31).

2. A ceiling fan motor according to claim 1, characterized in that: The inner end face of the insulating yoke (231) faces the housing (11), the insulating cover plate (234) is connected to the inner end face of the insulating yoke (231), the inner ring of the outer end face of the insulating yoke (231) has an axially protruding flange (235), the flange (235) has a notch (236), the wire end of the coil winding (24) passes through the notch (236) and is inserted / welded to the interface plate (32).

3. A ceiling fan motor according to claim 2, characterized in that: The inner side of the insulating cover plate (234) is provided with several mounting posts (237), and the interface plate (32) and the control plate (31) are fixed to the mounting posts (237) by screws.

4. A ceiling fan motor according to claim 3, characterized in that: The inner side of the insulating cover plate (234) is provided with several first reinforcing ribs (238).

5. A ceiling fan motor according to claim 4, characterized in that: The side wall of the non-shaft extension end of the motor shaft (21) is provided with a groove (211), and the insulating sleeve (233) fills the groove (211).

6. A ceiling fan motor according to claim 5, characterized in that: The stator core (22) is formed by rolling a strip of cold-rolled low-carbon steel sheet.

7. A ceiling fan motor according to any one of claims 1 to 6, characterized in that: The housing (11) includes a radial end plate (112) and an annular side plate (113) extending radially from the outer periphery of the end plate (112). The rotor core (12) is mounted on the inner wall of the annular side plate (113). A magnetic tile positioning seat (15) is installed on the inner side of the rotor core (12). The magnetic tile (14) is circumferentially bonded to the inner wall of the magnetic tile positioning seat (15).

8. A ceiling fan motor according to claim 7, characterized in that: The housing (11) has a shaft cylinder (114) protruding outward from the center, and the two bearing chambers (111) are arranged inside the shaft cylinder (114), with a partition block (115) between the two bearing chambers (111).

9. A ceiling fan motor according to claim 8, characterized in that: Several second reinforcing ribs (116) are provided between the outer side of the shaft cylinder (114) and the end plate (112).

10. A ceiling fan motor according to claim 9, characterized in that: The housing (11) is joined to the rotor core (12) by casting.

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