TWI549402B - Motor of ceiling fan - Google Patents

Description

Ceiling fan motor

The present invention relates to a ceiling fan motor, and more particularly to a ceiling fan motor capable of arranging an iron core between a rotatable first housing and a holding and fixing one of the second housings.

Referring to FIG. 1, a conventional ceiling fan motor 9 includes a stator 91, a rotor 92, and a base 93. The stator includes a shaft 911 and a core 912. The rotor 92 includes a first housing 921. The first housing 921 is rotatably coupled to the shaft 911. The base 93 includes a second housing. The second housing 931 is coupled to the stator 91 such that the core 912 is formed between the first housing 921 and the second housing 931; the first housing 921 of the rotor 92 and the base A gap 94 is formed between the second housings 931 of the 93, and the gap 94 communicates with the internal space and the external space of the ceiling fan motor. An embodiment similar to the ceiling fan motor 9 has been disclosed in the new patent of "Ceiling Fan Motor" No. CN203707931.

Thereby, when the ceiling fan motor 9 is actually used, as the rotor 92 rotates relative to the stator 91, the first housing 921 can be rotated relative to the second housing 931 to generate airflow inside the ceiling fan motor and via This gap 94 discharges the air flow, thereby achieving the effect of dissipating heat to the internal components of the ceiling fan motor 9. However, the opening of the gap 94 is directed upward or downward along one of the axial directions 911, so that foreign matter easily enters the inside of the ceiling fan motor 9 via the gap 94. If the foreign matter is dust, dust may accumulate between the first housing 921 and the second housing 931; and if the foreign matter is a hard object such as a metal sheet, protrude through the gap 94. The inside of the ceiling fan motor 9 may directly damage the core 912.

In summary, the conventional ceiling fan motor 9 has foreign matter that easily enters through the gap 94. The shortcomings that go into it are indeed necessary for improvement.

One object of the present invention is to provide a ceiling fan motor by arranging a stator core between a first housing of a rotor and a second housing of a base, the first housing being rotatably coupled to The axis of the stator, the second housing is coupled to the stator, and a gap is provided in the second housing or the first housing, so that airflow can be discharged through the gap.

Another object of the present invention is to provide a ceiling fan motor for providing a radially extending portion of the second housing and forming the gap between the first housing and the radially extending portion of the second housing The opening of the gap is formed toward the outside of the ceiling fan motor in a radial direction away from the axis to ensure that foreign matter does not easily enter the inside of the ceiling fan motor through the gap.

In order to achieve the foregoing object, the technical means for the present invention include: a ceiling fan motor comprising: a stator, a rotor and a base, the stator comprising an axis and an iron core; the rotor comprising a first shell The first housing is rotatably coupled to the shaft; the base includes a second housing coupled to the stator, the core is formed on the first housing of the rotor Between the second housings of the base. The second housing is provided with a radial extension extending from the second housing in a radial direction away from the axis. Wherein, a gap is formed between the first housing and the radially extending portion of the second housing, and the opening of the gap faces the outer side of the ceiling fan motor in a radial direction away from the axis.

In the ceiling fan motor of the present invention, the first housing is rotatable relative to the second housing to drive an internal airflow of the ceiling fan motor and discharge the airflow through the gap.

In the ceiling fan motor of the present invention, the second housing comprises a base and a ring wall, the ring wall is disposed on the base, and the radial extension extends from the annular wall in a radial direction away from the axis.

A ceiling fan motor comprising: a stator, the stator comprises an axial center and an iron core, and the outer core of the iron core is wound around an excitation coil, the iron core is coupled to the axial center, and the axial center is away from the iron core One end is coupled to a bell, the bell is provided with a circuit board, the circuit board is electrically connected to the excitation coil; a rotor includes a first housing, the first housing is rotatably coupled to the shaft; a base, the base includes a second housing, the second housing is coupled to the stator, the second housing has a flat shape, and the iron core is formed on the first housing of the rotor and the base Between the two housings, the second housing is provided with a radial extension extending from the second housing in a radial direction away from the axis; wherein the first housing is A gap is formed between the radially extending portions of the second housing.

In the ceiling fan motor of the present invention, a circuit board is disposed in the second housing, and the circuit board is electrically connected to the excitation coil.

In the ceiling fan motor of the present invention, the other end of the shaft passes through the iron core and the first casing of the rotor to join a lamp.

In the ceiling fan motor of the present invention, a lamp circuit board is disposed inside the lamp, and the circuit board of the lamp and the circuit board of the base are respectively formed at two ends of the shaft.

A ceiling fan motor comprising: a stator, the stator comprises an axial center and an iron core, the iron core comprises a winding sleeve, the outer circumference of the winding sleeve is provided with an excitation coil; and a rotor comprises a first casing, The first housing is rotatably coupled to the shaft; a base, the base includes a second housing, the second housing is coupled to the stator, and the second housing includes a base and a ring wall. The ring wall is disposed on the base, the iron core is formed between the first casing of the rotor and the second casing of the base, and the second casing is provided with a radial extension, the radial extension is The ring wall extends in a radial direction away from the axis, and an inner side of the ring wall of the second casing is provided with an abutting portion, and the abutting portion abuts the winding along an axial direction of the axis a wire sleeve; wherein a gap is formed between the first housing and the radially extending portion of the second housing.

According to the foregoing structure, the radial extension of each embodiment of the ceiling fan motor of the present invention can extend from the second housing in a radial direction away from the axis such that the opening of the gap forms a path away from the axis The direction is toward the outside of the ceiling fan motor, so that foreign matter does not easily enter the inside of the ceiling fan motor through the gap, thereby achieving the effect of improving the service life of the ceiling fan motor.

〔this invention〕

1‧‧‧stator

11‧‧‧Axis

12‧‧‧ iron core

121‧‧‧Exciting coil

122‧‧‧ Winding sleeve

2‧‧‧Rotor

21‧‧‧ first housing

22‧‧‧Permanent magnet set

3‧‧‧Base

31‧‧‧ second housing

31a‧‧‧Base

31b‧‧‧ ring wall

311‧‧‧ Radial extension

312‧‧‧Apartment

32‧‧‧ boards

4‧‧‧ gap

5‧‧‧Lights

51‧‧‧Lighting board

6‧‧‧ bell

[study]

9‧‧‧Ceiling fan motor

91‧‧‧ Stator

911‧‧‧Axis

912‧‧‧ iron core

92‧‧‧Rotor

921‧‧‧ first housing

93‧‧‧Base

931‧‧‧ second housing

94‧‧‧ gap

Fig. 1 is a cross-sectional view showing the structure of a conventional ceiling fan motor.

Fig. 2 is a perspective view showing the appearance of the first embodiment of the present invention.

Fig. 3 is a cross-sectional view showing the structure of the first embodiment of the present invention.

Figure 4 is a perspective exploded view of a second embodiment of the present invention.

Fig. 5 is a cross-sectional view showing the structure of a second embodiment of the present invention.

The above and other objects, features and advantages of the present invention will become more <RTIgt; In the present embodiment, the ceiling fan motor is an outer rotor motor. However, the ceiling fan motor may also be an inner rotor motor, which is not limited in the present invention. The ceiling fan motor of the first embodiment includes a stator 1, a rotor 2, and a base 3, and the rotor 2 rotatably couples the stator 1, and the base 3 is coupled and fixed to the stator 1.

The stator 1 includes a shaft core 11 and an iron core 12, and the shaft core 11 is fixed to a predetermined position such as a ceiling. The iron core 12 is coupled to the shaft core 11, and an outer coil of the iron core 12 can be wound around an outer circumference. 121. The core 12 can be directly coupled to the shaft 11; or the core 12 can be indirectly coupled to the shaft 11 via a spacer, a connecting seat or other members, and the invention is not limited thereto.

The rotor 2 includes a first housing 21, and the first housing 21 is rotatably coupled to the shaft 11. The first housing 21 defines an accommodating space for accommodating a permanent magnet group. 22 and the core 12 of the stator 1. The permanent magnet group 22 may be disposed on an inner peripheral wall of the first casing 21, and the permanent magnet group 22 is disposed toward an outer circumference of the iron core 12. Since the stator 1 and the rotor 2 are generally knowledgeable in the art, they can be easily understood. The details of the structure and operation of the technology are not repeated here.

The base 3 includes a second housing 31 coupled to the stator 1 such that the core 12 of the stator 1 is formed on the first housing 21 of the rotor 2 and the base 3 Between the two housings 31. In detail, the second housing 31 can be coupled to the shaft 11 or the core 12 of the stator 1 , and the second housing 31 can be fixed through various methods such as locking, splicing, screwing or snapping. The coupling mode is directly or indirectly coupled to the stator 1 such that the base 3 and the stator 1 are fixedly coupled to each other, and the second housing 31 cannot be pivoted relative to the axis 11. In addition, a circuit board 32 can be disposed in the second housing 31, and the circuit board 32 can be electrically connected to the excitation coil 121 for controlling the operation of the ceiling fan motor of the embodiment.

The second housing 31 is provided with a radially extending portion 311 extending from the second housing 31 in a radial direction away from the axis 11 . A gap 4 is formed between the first housing 21 and the radially extending portion 311 of the second housing 31. The gap 4 communicates with the inner space and the outer space of the ceiling fan motor, and the opening of the gap 4 is away from the opening. The radial direction of the axis 11 faces the outside of the ceiling fan motor.

More specifically, in the embodiment, the second housing 31 includes a base 31a and a ring wall 31b. The ring wall 31b can be disposed at an end edge of the base 31a, and the ring wall 31b is oriented from the base 31a. The core 12 of the stator 1 extends. The radially extending portion 311 extends from the annular wall 31b in a radial direction away from the axis 11 such that the opening of the gap 4 can be formed toward the outside of the ceiling fan motor in a radial direction away from the axis 11.

When the ceiling fan motor of the first embodiment of the present invention is actually used, the first housing 21 can be combined with a ceiling fan blade (not shown), and the ceiling fan blade can be combined with the ceiling fan motor to form a ceiling fan. The iron core 12 of the stator 1 may be disposed between the first housing 21 of the rotor 2 and the second housing 31 of the base 3, and the radial direction of the first housing 21 and the second housing 31 The gap 4 is formed between the extending portions 311, so that the iron core 12 and the circuit board 32 can communicate with the outer space of the ceiling fan motor via the gap 4. In other words, the core 12 and the circuit board 32 will not The first housing 21 and the second housing 31 are closed by the first housing 21 and the second housing 31. Therefore, the thermal energy generated by the core 12, the excitation coil 121 and the circuit board 32 during operation can be discharged through the gap 4.

Furthermore, when the ceiling fan motor of the first embodiment is activated, the stator 1 will drive the rotor 2 to operate, so that the first casing 21 of the rotor 2 rotates around the axis 11 of the stator 1; The second housing 31 of the seat 3 is fixedly coupled to the stator 1, so that the second housing 31 will remain in a fixed position. Accordingly, since the second housing 31 is kept fixed when the first housing 21 is rotated, the first housing 21 will rotate relative to the second housing 31, and can generate airflow inside the ceiling fan motor to The core 12, the exciting coil 121 and the circuit board 32 are dissipated, and the airflow is discharged through the gap 4 to eliminate thermal energy inside the ceiling fan motor.

With the above structure, the ceiling fan motor of the first embodiment of the present invention is provided with the radial extension portion 311 through the second housing 31 of the base 3, and the radial extension portion 311 can be along the second housing 31. Extending away from the radial direction of the axis 11 , the opening of the gap 4 is formed toward the outside of the ceiling fan motor in a radial direction away from the axis 11 , so that foreign matter does not easily enter the inside of the ceiling fan motor via the gap 4 .

Referring to Figures 4 and 5, a ceiling fan motor according to a second embodiment of the present invention is different from the first embodiment in that the second housing 31 is provided with another abutting portion 312. The connecting portion 312 is used to abut the iron core 12 . In detail, the iron core 12 can include a winding sleeve 122. The excitation coil 121 can be disposed around the outer circumference of the winding sleeve 122, and an abutting portion 312 is disposed inside the annular wall 31b of the second housing 31. The abutting portion 312 abuts the winding sleeve 122 along one of the axial directions 11 . By abutting the abutting portion 312 with the winding sleeve 122, the second housing 31 can be prevented from being supported by the abutting portion 312 and the winding sleeve 122 when the second housing 31 is pressed by an external force. The housing 31 is excessively deformed to effectively prevent the second housing 31 from pressing the core 12 or the exciting coil 121.

Referring to FIG. 5, the core 12 is coupled to the shaft 11 and the shaft One end of the core 11 can pass through the core 12 and the first housing 21 of the rotor 2 to incorporate a light fixture 5. Thereby, the ceiling fan motor of the second embodiment can constitute a ceiling fan having an illumination function. The ceiling fan motor and the lighting control circuit of the ceiling fan motor are usually disposed inside the ceiling fan motor. In this embodiment, the lamp 5 is internally provided with a lamp circuit board 51 for converting and driving. The power supply required for the luminaire to operate 5. In other words, the luminaire circuit board 51 of the luminaire 5 is disposed separately from the circuit board 32, which can effectively reduce the thermal energy generated by the circuit board 32 when the ceiling fan motor operates.

Moreover, in the embodiment, the circuit board 32 does not need to be disposed in the second housing 31 of the base 3. More specifically, as shown in FIG. 5, the other end of the core 11 away from the core 12 can be combined with a bell 6 in which a circuit board 32 is disposed, and the circuit board 32 is electrically connected to the The exciting coil 121 is for controlling the operation of the ceiling fan motor of the embodiment. Thereby, the circuit board 32 can be separately disposed outside the pedestal 3, and the luminaire circuit board 51 and the circuit board 32 of the pedestal 3 are respectively formed at two ends of the shaft center 11, so when the ceiling fan motor operates, The thermal energy generated by the circuit board 32 does not accumulate between the first housing 21 and the second housing 31. In addition, since the circuit board 32 is disposed outside the pedestal 3, the circuit board 32 can be integrated with an AC/DC conversion circuit, so that the excitation coil 121 can obtain a DC power supply through the circuit board 32, so the embodiments of the present invention The ceiling fan motor can be a DC motor.

The main feature of the ceiling fan motor according to the first and second embodiments of the present invention is that the core 12 of the stator 1 is disposed on the first housing 21 and the base 3 of a rotor 2 by the structural features disclosed above. The second housing 31 is directly or indirectly coupled to the stator 1 , and the radial extension 311 is disposed on the second housing 31 to make the first housing 21 A gap 4 is formed between the radially extending portions 311 of the second casing 31, and when the stator 1 drives the rotor 2 to operate, the first casing 21 rotates around the axis 11 of the stator 1 to utilize the first The relative rotation between a housing 21 and the second housing 31 can drive the generation of airflow to the ceiling fan The internal components are dissipated, and the gas flow can be discharged through the gap 4.

Therefore, it can be seen that the opening of the gap 94 of the conventional ceiling fan motor 9 is upward or downward along one of the axial directions of the shaft 911, so that foreign matter easily enters the inside of the ceiling fan motor 9 via the gap 94, and the ceiling fan of the present invention The radial extension 311 of each embodiment of the motor can extend from the second housing 31 in a radial direction away from the axis 11 such that the opening of the gap 4 is formed in a radial direction away from the axis 11 Since the ceiling fan motor is outside, it is difficult for foreign matter to enter the inside of the ceiling fan motor through the gap 4. Accordingly, dust is less likely to accumulate between the first casing 21 and the second casing 31, and hard objects such as metal sheets are less likely to protrude into the ceiling fan motor through the gap 4, thereby causing damage to the core 12. Embodiments of the ceiling fan motor of the present invention are capable of achieving the effect of increasing the service life of the ceiling fan motor.

In summary, the ceiling fan motor of the present invention can prevent foreign matter from entering the inside of the ceiling fan motor, so as to improve the service life of the ceiling fan motor.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

1‧‧‧stator

11‧‧‧Axis

2‧‧‧Rotor

21‧‧‧ first housing

3‧‧‧Base

31‧‧‧ second housing

31a‧‧‧Base

31b‧‧‧ ring wall

311‧‧‧ Radial extension

4‧‧‧ gap

Claims (8)

A ceiling fan motor comprising: a stator comprising a shaft core and an iron core; a rotor comprising a first housing, the first housing being rotatably coupled to the shaft; a base, the base The base includes a second housing coupled to the stator, the iron core being formed between the first housing of the rotor and the second housing of the base, the second housing being provided with a diameter a radially extending portion extending from the second housing in a radial direction away from the axis; wherein a gap is formed between the first housing and the radially extending portion of the second housing The gap, the opening of the gap faces the outside of the ceiling fan motor in a radial direction away from the axis. The ceiling fan motor of claim 1, wherein the first housing is rotatable relative to the second housing. The ceiling fan motor of claim 1, wherein the second housing comprises a base and a ring wall, the ring wall is disposed on the base, and the radial extension is from the ring wall away from the axis The radial direction of the heart extends. A ceiling fan motor comprising: a stator, the stator comprises an axial center and an iron core, the outer core of the iron core is wound around the outer core, and the iron core is coupled to the axial center, and the axial center is coupled to one end of the iron core a bell, the switch is provided with a circuit board electrically connected to the excitation coil; a rotor comprising a first housing, the first housing being rotatably coupled to the shaft; a base, The base includes a second housing coupled to the stator, the second housing has a flat shape, and the iron core is formed on the first housing of the rotor and the second housing of the base The second housing is provided with a radial extension extending from the second housing in a radial direction away from the axis; wherein the first housing and the second A gap is formed between the radially extending portions of the housing. The ceiling fan motor of claim 4, wherein the second housing is provided with a circuit board electrically connected to the excitation coil. The ceiling fan motor of claim 4, wherein the other end of the shaft passes through the core and the first casing of the rotor to incorporate a luminaire. The ceiling fan motor of claim 6, wherein the lamp is internally provided with a lamp circuit board, and the circuit board of the lamp and the circuit board of the base are respectively formed at two ends of the shaft. A ceiling fan motor comprising: a stator, the stator comprises an axial center and an iron core, the iron core comprises a winding sleeve, the outer circumference of the winding sleeve is provided with an excitation coil; and a rotor comprises a first casing, The first housing is rotatably coupled to the shaft; a base, the base includes a second housing, the second housing is coupled to the stator, and the second housing includes a base and a ring wall. The ring wall is disposed on the base, the iron core is formed between the first casing of the rotor and the second casing of the base, and the second casing is provided with a radial extension, the radial extension is The ring wall extends in a radial direction away from the axis, and an inner side of the ring wall of the second casing is provided with an abutting portion, and the abutting portion abuts the winding along an axial direction of the axis a wire sleeve; wherein a gap is formed between the first housing and the radially extending portion of the second housing.