CN215267952U

CN215267952U - Brushless direct current ceiling fan motor

Info

Publication number: CN215267952U
Application number: CN202120956735.7U
Authority: CN
Inventors: 周延峰; 钮建华; 戴旭良; 叶建华; 吴建强; 闵月峰
Original assignee: Zhejiang Jiaxue Special Minitype Motors Co ltd
Current assignee: Zhejiang Jiaxue Special Minitype Motors Co ltd
Priority date: 2021-05-07
Filing date: 2021-05-07
Publication date: 2021-12-21
Anticipated expiration: 2031-05-07

Abstract

The utility model belongs to the technical field of the motor, concretely relates to brushless direct current ceiling fan motor, which comprises a stator, the rotor, the upper cover, the lower cover, the center pin, the stator includes the iron core, the coil, center pin circumference is equipped with the iron core and links to each other rather than, the iron core is embedded to have the coil, center pin and upper cover, the lower cover is respectively through first deep groove ball bearing, second deep groove ball bearing rotates to be connected, it is spacing from two upper and lower positions, thereby stabilize the upper cover steadily, the position relation between lower cover and the center pin, stabilize the position relation between rotor and the stator promptly, thereby reduce the wearing and tearing that the ceiling fan motor leads to appearing because of outside air current and the condition such as generate heat, the life of extension ceiling fan motor.

Description

Brushless direct current ceiling fan motor

Technical Field

The utility model belongs to the technical field of the motor, concretely relates to brushless direct current ceiling fan motor.

Background

The ceiling fan is usually hung on a ceiling, the fan blades are arranged on the shell, and the coils on the stator are electrified to drive the rotor to rotate and then wind downwards through the fan blades; the large area of the fan blades causes the fan blades to be easily influenced by external air flow, such as ambient air flow and other surrounding fans, and the fan blades are impacted by the external air flow to influence the shell and the rotor, so that the fan blades slightly change on the original rotating path, the ceiling fan motor rotating at high speed may be abraded and heated, and the service life of the motor is reduced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is not enough to above-mentioned prior art, a brushless direct current ceiling fan motor is provided, solve the problem that exists among the prior art.

In order to solve the technical problem, the utility model discloses the technical scheme who takes is: a brushless direct current ceiling fan motor comprises a stator, a rotor, an upper cover, a lower cover and a central shaft, wherein the stator comprises an iron core and a coil, the central shaft is circumferentially provided with the iron core and connected with the iron core, and the coil is embedded in the iron core; a rotor, an iron core and a coil are arranged in a cavity formed between the upper cover and the lower cover, and the rotor is arranged around the iron core and fixed on the side walls of the upper cover and the lower cover; the rotor is provided with magnetic steel and a magnetic steel ring; the central shaft penetrates through the centers of the upper cover and the lower cover and extends upwards, and the central shaft is rotatably connected with the upper cover and the lower cover through a first deep groove ball bearing and a second deep groove ball bearing respectively.

Preferably, the inner wall of the first deep groove ball bearing is connected with the central shaft, the outer wall and the upper edge of the first deep groove ball bearing are connected with the upper cover, the lower edge of the first deep groove ball bearing is provided with a bearing cover, and the bearing cover and the upper cover are fixedly connected with the elastic washer through a plurality of fixing bolts.

Preferably, the inner wall of the second deep groove ball bearing is connected with the central shaft, the outer wall of the second deep groove ball bearing is connected with the lower cover, the wave spring is arranged between the lower edge of the second deep groove ball bearing and the lower cover, the elastic retainer ring for the shaft is arranged at the upper edge of the second deep groove ball bearing, and the elastic retainer ring for the shaft is fixed on the periphery of the central shaft.

Preferably, the upper cover and the lower cover are fixedly connected with the periphery of the self-locking nut through a plurality of fixing bolts.

Advantageous effects

The utility model is rotationally connected with the central shaft through the first deep groove ball bearing and the second deep groove ball bearing which are respectively arranged on the upper cover and the lower cover, and the position limitation is carried out from the upper position and the lower position, so as to stabilize the position relation among the upper cover, the lower cover and the central shaft, namely stabilize the position relation between the rotor and the stator; when the rotor is possibly changed in the rotating path due to the influence of external air flow, the rotating path of the rotor is limited, the relative position between the stator and the rotor is stabilized, the friction between the stator and the rotor is reduced, and meanwhile, the vibration generated by the relevant part of the rotor can be buffered by the elastic retaining ring for the shaft and the wave spring which are arranged around the second deep groove ball bearing, so that the conditions of abrasion, heating and the like caused by the external air flow of the ceiling fan motor are reduced, and the service life of the ceiling fan motor is prolonged.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

fig. 2 is a partially enlarged schematic view of the present invention.

The figure is marked with:

1. a stator; 2. a rotor; 3. an upper cover; 4. a lower cover; 5. a bearing cap; 6. an elastic washer; 7. a self-locking nut; 8. a first deep groove ball bearing; 9. a circlip for the shaft; 10. a wave spring; 11. a central shaft; 12. an iron core; 13. a coil; 14 second deep groove ball bearing.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

In the description of the present invention, it is to be understood that the terms "thickness", "width", "front", "back", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1

Referring to fig. 1-2, a brushless dc ceiling fan motor comprises a stator 1, a rotor 2, an upper cover 3, a lower cover 4, and a central shaft 11, wherein the stator 1 comprises an iron core 12 and a coil 13, the iron core 12 is arranged on the central shaft 11 in the circumferential direction and connected with the central shaft, and the coil 13 is embedded in the iron core 12; a cavity formed between the upper cover 3 and the lower cover 4 is internally provided with a rotor 2, an iron core 12 and a coil 13, and the rotor 2 is arranged around the iron core 12 and fixed on the side walls of the upper cover 3 and the lower cover 4; the rotor 2 is provided with magnetic steel and a magnetic steel ring; the central shaft 11 penetrates through the centers of the upper cover 3 and the lower cover 4 and extends upwards, and the central shaft 11 is rotatably connected with the upper cover 3 and the lower cover 4 through the first deep groove ball bearing 8 and the second deep groove ball bearing 14 respectively.

According to the further technical scheme, the inner wall of the first deep groove ball bearing 8 is connected with the central shaft 11, the outer wall and the upper edge are connected with the upper cover 3, the lower edge is provided with a bearing cover 5, and the bearing cover 5 and the upper cover 3 are fixedly connected with the elastic washer 6 through a plurality of fixing bolts.

According to a further technical scheme, the inner wall of the second deep groove ball bearing 14 is connected with a central shaft 11, the outer wall of the second deep groove ball bearing is connected with the lower cover 4, a wave spring 10 is arranged between the lower edge of the second deep groove ball bearing and the lower cover 4, an elastic check ring 9 for a shaft is arranged on the upper edge of the second deep groove ball bearing, and the elastic check ring 9 for the shaft is fixed on the periphery of the central shaft 11.

According to the further technical scheme, the upper cover 3 and the lower cover 4 are fixedly connected with the periphery through a plurality of fixing bolts and self-locking nuts 7.

The first deep groove ball bearing and the second deep groove ball bearing which are respectively arranged on the upper cover and the lower cover are rotationally connected with the central shaft, and the position limitation is carried out from the upper position and the lower position, so that the position relation among the upper cover, the lower cover and the central shaft, namely the position relation between the rotor and the stator, is stabilized; when the rotor is possibly changed in the rotating path due to the influence of external air flow, the rotating path of the rotor is limited, the relative position between the stator and the rotor is stabilized, the friction between the stator and the rotor is reduced, and meanwhile, the vibration generated by the relevant part of the rotor can be buffered by the elastic retaining ring for the shaft and the wave spring which are arranged around the second deep groove ball bearing, so that the conditions of abrasion, heating and the like caused by the external air flow of the ceiling fan motor are reduced, and the service life of the ceiling fan motor is prolonged.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention, and it will be apparent to those skilled in the art that various modifications may be made to the disclosed embodiments, and that other structures may be devised in accordance with the principles of the present invention without departing from the scope of the invention.

Claims

1. The utility model provides a brushless direct current ceiling fan motor, includes stator (1), rotor (2), upper cover (3), lower cover (4), center pin (11), its characterized in that: the stator (1) comprises an iron core (12) and a coil (13), the iron core (12) is arranged on the circumference of the central shaft (11) and connected with the central shaft, and the coil (13) is embedded in the iron core (12); a rotor (2), an iron core (12) and a coil (13) are arranged in a cavity formed between the upper cover (3) and the lower cover (4), and the rotor (2) is arranged around the iron core (12) and fixed on the side walls of the upper cover (3) and the lower cover (4); the rotor (2) is provided with magnetic steel and a magnetic steel ring; the central shaft (11) penetrates through the centers of the upper cover (3) and the lower cover (4) and extends upwards, and the central shaft (11) is rotatably connected with the upper cover (3) and the lower cover (4) through a first deep groove ball bearing (8) and a second deep groove ball bearing (14) respectively.

2. The brushless dc ceiling fan motor of claim 1, wherein: the inner wall of the first deep groove ball bearing (8) is connected with the central shaft (11), the outer wall and the upper edge of the first deep groove ball bearing are connected with the upper cover (3), the lower edge of the first deep groove ball bearing is provided with a bearing cover (5), and the bearing cover (5) and the upper cover (3) are fixedly connected with the elastic washer (6) through a plurality of fixing bolts.

3. The brushless dc ceiling fan motor of claim 1, wherein: the inner wall of the second deep groove ball bearing (14) is connected with the central shaft (11), the outer wall of the second deep groove ball bearing is connected with the lower cover (4), a wave spring (10) is arranged between the lower edge of the second deep groove ball bearing and the lower cover (4), an elastic check ring (9) for the shaft is arranged on the upper edge of the second deep groove ball bearing, and the elastic check ring (9) for the shaft is fixed on the periphery of the central shaft (11).

4. The brushless dc ceiling fan motor of claim 1, wherein: the upper cover (3) and the lower cover (4) are fixedly connected with the periphery of the self-locking nut (7) through a plurality of fixing bolts.