TWI601920B - Ceiling fan - Google Patents

Description

ceiling fan

The present invention relates to a ceiling fan, and more particularly to a ceiling fan that is axially reduced in height.

Referring to Fig. 1, there is shown a conventional ceiling fan 9, which includes a stator 91 and a rotor 92 and a plurality of blades 93. The stator 91 has a core 911, and a core 912 is disposed in the center of the core 911. The rotor 92 has a motor housing 921. A bearing 922 is disposed in the motor housing 921 for the shaft 912 to pass through, so that the motor housing 921 is rotatably coupled to the shaft 912. The plurality of blades 93 are coupled to the motor casing 921 such that when the motor casing 921 is rotated relative to the shaft 912, the plurality of blades 93 can be used to drive air to generate an air flow. An embodiment of the conventional ceiling fan 9 has been disclosed in the Patent Case No. I326959 of the Republic of China, "DC Brushless Motor Fixing and Rotor Improvement for Ceiling Fans".

Each of the blades 93 has a flat shape, and each of the blades 93 is locked to the motor casing 921 via a connecting member 94. Since each of the blades 93 is coupled to the motor casing 921 from the bottom to the top via the connecting member 94, each of the blades 93 and the motor casing 921 have different levels; in other words, each of the blades 93 is at the rotor 92. The motor casing 921 does not overlap in the radial direction, so that each of the blades 93 increases the axial height of the ceiling fan 9 in addition to the radial width of the ceiling fan 9.

Since the ceiling fan 9 is usually installed at a position such as a ceiling of a building, if the overall axial height cannot be effectively reduced, the ceiling fan 9 cannot be applied to a space having a low indoor height; or, even if it can be barely installed at an indoor height The lower space is still easy to cause pressure on the user. Accordingly, the application range of the ceiling fan 9 is always difficult to break through.

Moreover, each of the blades 93 needs to be locked to the motor casing 921 through the connecting member 94. The additional arrangement of the connecting member 94 increases the manufacturing cost of the ceiling fan 9, and causes the blades 93 to be connected and connected when the ceiling fan 9 is assembled. The member 94, the connecting member 94 and the motor housing 921 are interlocked with each other, so that the ceiling fan 9 has a problem of assembly trouble.

In summary, it is urgent to provide a further improved ceiling fan to enhance the application range of the ceiling fan and reduce its assembly difficulty.

One object of the present invention is to provide a ceiling fan comprising a rotor and a plurality of blades, each of which can be removably coupled to a motor casing of the rotor.

In order to achieve the foregoing object, the technical means used in the present invention include: A ceiling fan includes: a stator comprising an axis and an iron core, the iron core is disposed on an outer circumference of the shaft; a rotor, the rotor includes a motor casing, and the motor casing has a substrate portion and a ring wall portion, The substrate portion is rotatably coupled to the outer circumference of the shaft core, and the annular wall portion is disposed on an outer circumference of the substrate portion; a plurality of blades, one end of each of the blades is a joint end, and the joint end is coupled to the outer side of the ring wall portion And the binding end is coincident with the annular wall portion in the radial direction of the rotor; and a cover, the outer cover includes a first cover body and a second cover body, wherein the iron core and the rotor are disposed on the first cover body and The second cover is disposed between the second cover and the outer cover is provided with a plurality of notches for the passage of the plurality of blades, wherein the combined ends of the blades are provided with a first joint portion, and the ring wall portion of the motor casing is away from the substrate One side of the portion is provided with a radial extension portion, and the radial extension portion is provided with a plurality of second joint portions for combining the first joint portions of the respective blades, and the annular wall portion of the motor casing is formed between the outer wall cover and the outer cover A gap is provided for a weight.

The annular wall portion extends from the substrate portion to the radially extending portion along an axial direction of the rotor, and the radially extending portion extends from the annular wall portion away from the axial center. Thereby, the first joint portion of each of the blades may be opposite to one of the second joint portions of the radially extending portion along the axial direction of the rotor, so that the blades can be removably coupled to the radial direction. Extension and shape It is formed on the outside of the ring wall.

Wherein, the rotor comprises a permanent magnet group, and the permanent magnet group is disposed inside the ring wall portion. Thereby, the permanent magnet group can be formed to be coupled to the inner peripheral wall of the motor casing, and the permanent magnet group can face the outer circumference of the iron core and form an air gap with the iron core.

a ceiling fan as described above, wherein a blade system extends in a radial direction of one of the rotors, and the motor casing of the rotor has a first projection range on a plane perpendicular to the radial direction, and the combined ends of the blades are The plane has a second projection range that overlaps all or part of the first projection range. Thereby, each of the blades can be overlapped with the motor casing in the radial direction of the rotor, so that the blades do not increase the axial height of the ceiling fan; or the axial height of the ceiling fan after installing the fan blade is increased. .

Wherein, the weight is coupled to the ring wall portion or the radial extension portion. Thereby, the weight can be fixed to the surface of the motor casing and does not move relative to the motor casing to balance the center of gravity of the rotor.

The first joint portion of the fan blade is a perforation, the second joint portion is a fixing hole, and a locking component passes through the through hole of the first joint portion and is fixed to the fixing hole of the second joint portion. And the combined end of the blade is coupled to the motor casing. Thereby, the combined end of the blade can be detachably coupled to the motor casing.

Wherein, the center of the iron core of the stator has a shaft hole, the shaft core passes through the shaft hole, and the stator is further provided with an assembly board, the assembly board is disposed on the inner circumference of the iron core facing the shaft hole, and the assembly board is The core is shielded in the axial direction of the rotor. Thereby, the assembled board can be combined with a circuit board, a power converter, a controller, a luminaire or other electronic components.

Wherein, a lamp is additionally provided, and the lamp is combined with the assembled board, so that the ceiling fan has both a ventilation function and a lighting function. Thereby, current can be prevented from flowing between the lamp and the iron core, and the assembly board can also prevent the user from directly seeing the iron core and the winding sleeve thereof through the second cover body to provide an insulation function and enhance the The aesthetic level of the ceiling fan

The outer cover includes a first cover body and a second cover body, and the iron core, the assembly plate and the rotor are disposed between the first cover body and the second cover body, and the outer cover The outer cover is provided with a plurality of notches for the passage of the above-mentioned blades, the second cover faces the assembly plate, and the second cover is made of a light-permeable material. Thereby, the light generated by the luminaire can pass through the second cover to illuminate the space around the ceiling fan, so that the ceiling fan has both a ventilation function and a lighting function.

Wherein, each of the above blades is made of a non-metal material, thereby reducing the weight and manufacturing cost.

According to the foregoing structure, the ceiling fan of the embodiment of the present invention causes the blades to not increase the axial height of the ceiling fan by causing each of the blades to coincide with the motor casing in the radial direction of the rotor; or reducing the ceiling fan installation The axial height increase after the fan blade can effectively reduce the axial height of the ceiling fan and improve the application range of the ceiling fan. Furthermore, each of the blades can be directly detachably coupled to the motor casing through a joint end, which can effectively reduce the manufacturing cost of the ceiling fan, and can directly connect each of the blades to the motor casing when assembling the ceiling fan. Reduce the difficulty of assembling the ceiling fan.

〔this invention〕

1‧‧‧stator

11‧‧‧Axis

12‧‧‧ iron core

121‧‧‧Axis hole

122‧‧‧ body

123‧‧‧ Winding sleeve

13‧‧‧ Assembly board

2‧‧‧Rotor

21‧‧‧ motor casing

211‧‧‧Parts Department

212‧‧‧ Ring Wall

213‧‧‧ Radial extension

214‧‧‧Second junction

22‧‧‧Permanent magnet set

3‧‧‧ fan leaves

31‧‧‧Binding end

311‧‧‧ first joint

312‧‧‧shims

313‧‧‧ 塞盖

4‧‧‧ Cover

41‧‧‧First cover

42‧‧‧Second cover

43‧‧‧ Missing slots

5‧‧‧weights

6‧‧‧Lighting

S‧‧‧Locking components

X‧‧‧ radial direction

P‧‧‧ plane

R1‧‧‧first projection range

R2‧‧‧second projection range

G‧‧‧ gap

[study]

9‧‧‧ Ceiling fan

91‧‧‧ Stator

911‧‧‧ iron core

912‧‧‧Axis

92‧‧‧Rotor

921‧‧‧ motor casing

922‧‧‧ bearing

93‧‧‧ leaves

94‧‧‧Connecting parts

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

Fig. 2 is a schematic exploded view of the embodiment of the present invention.

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

Fig. 4 is a schematic view showing the projection of a fan blade and a motor casing on a plane according to an embodiment of the present invention.

Fig. 5 is a schematic exploded view showing the structure of a lamp according to an embodiment of the present invention.

Figure 6 is a cross-sectional view showing the structure of a lamp according to an embodiment of the present invention.

Figure 7 is a cross-sectional view showing the structure of the second cover of the embodiment of the present invention incorporated into the assembled board.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

Referring to Figures 2 and 3, a ceiling fan according to an embodiment of the present invention includes a stator 1, a rotor 2, and a plurality of blades 3. The rotor 2 is rotatably coupled to the stator 1, and each of the blades 3 is coupled to the rotor 2.

The stator 1 includes a shaft core 11 and an iron core 12, and the iron core 12 is disposed on the outer circumference of the shaft core 11. In detail, the iron core 12 may be formed by stacking a silicon steel sheet or integrally formed of a magnetic conductive material, which is not limited by the present invention. The core 12 has a shaft hole 121 in the center thereof, and the shaft 11 passes through the shaft hole 121. The core 12 can be connected to the body 122. The base 122 is disposed in the assembly hole 121, so that the core 12 can be coupled to the shaft 11 via the base 122. Alternatively, the core 12 can be directly Combined with the axis 11. In this embodiment, the outer circumference of the core 12 may be further provided with a winding sleeve 123 for winding the coil. The seat body 122 can be coupled to the winding sleeve 123 by means of locking, snapping, bonding or splicing; or the seat body 122 can be integrally formed with the winding sleeve 123.

The rotor 2 includes a motor casing 21 and a permanent magnet group 22 rotatably coupled to the outer circumference of the shaft 11. The permanent magnet group 22 can be coupled to the inner peripheral wall of the motor casing 21, and the permanent The magnet group 22 faces the outer circumference of the iron core 12 and forms an air gap with the iron core 12. The motor casing 21 can have a base plate portion 211 and a ring wall portion 212. The base plate portion 211 is rotatably coupled to the outer periphery of the shaft core 12. The annular wall portion 212 is disposed on the outer periphery of the base plate portion 211, and the permanent magnet is disposed. The group 22 is bonded to the inside of the ring wall portion 212.

The number of the blades 3 may be three-leaf, five-leaf or other various numbers, and the invention is not limited thereto. One end of each of the blades 3 is a joint end 31, and the joint end 31 is detachably coupled to the outside of the motor casing 21, and the joint end 31 coincides with the motor casing 21 in the radial direction of the rotor 2. More specifically, the joint end 31 of each of the blades 3 may be coupled to the outside of the annular wall portion 212, and the joint end 31 coincides with the annular wall portion 212 in the radial direction of the rotor 2. In detail, the The joint end 31 coincides with the annular wall portion 212 in the radial direction of the rotor 2, which means that the annular wall portion 212 completely or partially shields the joint end 31 in the radial direction of the rotor 2, as understood by those skilled in the art. .

The connecting end 31 of each of the blades 3 may be provided with a first connecting portion 311. The annular wall portion 212 of the motor casing 21 is disposed away from the side of the substrate portion 211 with a radial extending portion 213. The radial extending portion 213 A plurality of second joint portions 214 are provided for combining the first joint portions 311 of the respective blades 3 . The annular wall portion 212 extends from the base portion 211 to the radially extending portion 213 along the axial direction of the rotor 2, and the radially extending portion 213 extends from the annular wall portion 212 away from the axis 11. Thereby, the first joint portion 311 of each of the blades 3 can be opposite to one of the second joint portions 214 of the radially extending portion 213 along the axial direction of the rotor 2, so that the blades 3 can be detachable. The radial extension 213 is coupled to the outer side of the annular wall portion 212. The substrate portion 211, the annular wall portion 212, and the radially extending portion 213 may be integrally formed, but the invention is not limited thereto.

In this embodiment, the first joint portion 311 of the blade 3 is a through hole, the second joint portion 214 is a fixing hole, and a locking component S passes through the through hole of the first joint portion 311 and is locked. The fixing hole of the second joint portion 214 is detachably coupled to the motor casing 21 by the joint end 31 of the blade 3. Each of the blades 3 is generally made of a non-metallic material such as plastic or in nature to reduce the weight and manufacturing cost. Therefore, the first joint portion 311 is preferably further provided with a gasket 312 to prevent the locking component S. The blade 3 is damaged when passing through the first joint portion 311. In addition, the first joint portion 311 can also be coupled with a plug cover 313 to shield the locking member S while preventing the locking member S from loosening.

With the above structure, the ceiling fan of the embodiment of the present invention is detachably coupled to the outside of the motor casing 21 by the respective blades 3, and the coupling end 31 is coincident with the motor casing 21 in the radial direction of the rotor 2. It can be avoided that each of the blades 3 increases the axial height of the ceiling fan. More specifically, please refer to FIGS. 3 and 4 together, taking one of the blades 3 as an example, the blade 3 is extended along a radial direction X of the rotor, and the motor casing 21 is perpendicular to the diameter. On a plane P of direction X There is a first projection range R1, and the combined end 31 of the blade 3 has a second projection range R2 on the plane P, and the second projection range R2 is totally or partially overlapped with the first projection range R1. For example, as shown in FIG. 4, in the embodiment, the second projection range R2 partially overlaps the first projection range R1, and the second projection range R2 is below (in terms of the drawing). The first projection range R1 is exceeded, so the blade 3 does not increase the axial height of the ceiling fan.

Moreover, even if the second projection range R2 is below the first projection range R1, since the second projection range R2 at least partially overlaps the first projection range R1, the blade 93 and the motor casing of the conventional ceiling fan 9 are compared. The 921 has a completely different level, and the ceiling fan of the embodiment of the present invention can still reduce the increase in the axial height of the ceiling fan after the blade 3 is installed.

It can be seen that the blades 93 of the conventional ceiling fan 9 do not overlap with the motor casing 921 in the radial direction of the rotor 92, so that the blades 93 increase the axial height of the ceiling fan 9, and the ceiling fan of the embodiment of the present invention can Letting each of the blades 3 coincide with the motor casing 21 in the radial direction of the rotor 2, so that the blades 3 do not increase the axial height of the ceiling fan; or reduce the axial height of the ceiling fan after installing the blade 3 The amplitude can effectively reduce the axial height of the ceiling fan to improve the application range of the ceiling fan.

Furthermore, the fan blade 3 of the ceiling fan of the embodiment of the present invention can be directly detachably coupled to the motor casing 21 through a coupling end 31, and the motor casing 21 can be combined without further connection via a connector or the like, thereby effectively reducing the manufacture of the ceiling fan. Cost, and when the ceiling fan is assembled, each of the blades 3 can be directly coupled to the motor casing 21, which has the effect of reducing the difficulty in assembling the ceiling fan.

According to the foregoing structure, the various features of the airflow exchange device of the embodiment of the present invention are enumerated in detail below and explained one by one:

Referring to Figures 2 and 3, the ceiling fan of this embodiment may further include a cover 4 including a first cover 41 and a second cover 42. The core 12 of the stator 1 and the rotor 2 is disposed between the first cover 41 and the second cover 42 , and the cover 4 is provided with a plurality of notches 43 , each of the slots 43 extending through the first cover 41 or the second cover 42 Surface for each The blade 3 passes through. Thereby, the outer cover 4 can cover the iron core 12 and the rotor 2 to enhance the appearance integrity of the ceiling fan and prevent dust or foreign matter from intruding into the stator 1 or the inside of the rotor 2.

A gap G is formed between the annular wall portion 212 of the motor casing 21 and the outer cover 4. In detail, a plurality of gaps G are formed between the portion of the outer wall portion 212 where the blade 3 is not disposed and the outer cover 4, Each of the gaps G can be disposed in a weighting block 5, and the weighting block 5 can be coupled to the annular wall portion 212 or the radially extending portion 213 so as to be fixed to the surface of the motor casing 21 without The motor casing 21 is moved to balance the center of gravity of the rotor 2. By providing the weight 5 in the gap G, it is possible to prevent the weight 5 from adversely affecting the aesthetics of the ceiling fan. Since the position of the center of gravity of the rotor 2 itself may be deviated from the axis 11 due to process tolerance or assembly accuracy, etc.; or, after the blades 3 are coupled to the motor casing 21, the position of the center of gravity of the rotor 2 may also be caused. It is possible to deviate from the axis 11 at which the center of gravity of the rotor 2 is balanced to be aligned with the axis 11 by providing a weight 5 having an appropriate weight at a gap G at a position where the weight is required to be increased. Among them, even if the blade 3 is provided at a position where the weight is increased after the measurement, and the weight 5 cannot be provided, the weight 5 can be disposed in the gap G on both sides of the blade 3 to produce the same center of gravity balance effect.

In addition, the stator 1 can be further provided with an assembly board 13 disposed on the inner circumference of the iron core 12 facing the shaft hole 121, and the assembly board 13 shields the iron core 12 in the axial direction of the rotor 2 and Its winding sleeve 123. The assembly board 13 can be coupled to the winding sleeve 123 of the iron core 12; alternatively, the assembly board 13 can also be integrally formed with the winding sleeve 123. Thereby, the assembled board 13 can be combined with a circuit board, a power converter, a controller, a light fixture or other electronic components.

For example, please refer to the fifth and sixth embodiments. In some embodiments of the present invention, a light fixture 6 is further disposed. The light fixture 6 is coupled to the assembly board 13 , and the second cover 42 faces the assembly board 13 . The second cover 42 is made of a material that is transparent or has a through hole. Thereby, the light generated by the lamp 6 can pass through the second cover 42 to illuminate the space around the ceiling fan, so that the ceiling fan has both a ventilation function and a lighting function. By incorporating the lamp 6 to the assembly board 13, The current is prevented from flowing between the lamp 6 and the core 12, and the assembly board 13 can also prevent the user from directly seeing the core 12 and the winding sleeve 123 thereof through the second cover 42; in other words, the assembled board 13 can provide insulation and enhance the aesthetics of the ceiling fan.

In the foregoing embodiments, the outer cover 4 can be coupled to the motor casing 21 of the rotor 2. When the rotor 2 rotates, the first cover 41 and the second cover 42 are rotated together; however, please Referring to FIG. 7 , in some embodiments of the present invention, the second cover 42 may be coupled to the assembled board 13 of the stator 1 , and each of the notches 43 extends through the first cover 41 , and the second A gap may be left between the cover 42 and the first cover 41. Thereby, when the rotor 2 rotates, only the first cover 41 is rotated; in contrast, the second cover 42 can be fixed to the stator 1. Similarly, in other embodiments of the present invention, the first cover 41 may be coupled to the stator 1 , and each of the notches 43 extends through the second cover 42 to keep the first cover 41 fixed. The stator 1 does not rotate with the rotor 2. Accordingly, the present invention does not limit the coupling relationship between the first cover 41 and the second cover 42 of the outer cover 4 and the stator 1 or the rotor 2.

In summary, the ceiling fan of the embodiment of the present invention does not increase the axial height of the ceiling fan 3 by causing each of the blades 3 to coincide with the motor casing 21 in the radial direction of the rotor 2; Reducing the axial height increase of the ceiling fan after installing the blade 3 can effectively reduce the axial height of the ceiling fan, and can effectively improve the applicable range of the ceiling fan.

Furthermore, the fan blade 3 of the ceiling fan of the embodiment of the present invention can be directly detachably coupled to the motor casing 21 through a coupling end 31, which can effectively reduce the manufacturing cost of the ceiling fan, and can directly connect the fan when assembling the ceiling fan. The attachment of the blade 3 to the motor casing 21 does have the effect of reducing the difficulty of assembly of the ceiling fan.

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‧‧‧ motor casing

211‧‧‧Parts Department

212‧‧‧ Ring Wall

213‧‧‧ Radial extension

214‧‧‧Second junction

3‧‧‧ fan leaves

31‧‧‧Binding end

311‧‧‧ first joint

312‧‧‧shims

313‧‧‧ 塞盖

4‧‧‧ Cover

41‧‧‧First cover

42‧‧‧Second cover

43‧‧‧ Missing slots

5‧‧‧weights

S‧‧‧Locking components

Claims (11)

A ceiling fan comprising: a stator comprising an axis and an iron core disposed on an outer circumference of the shaft; a rotor comprising a motor casing having a base portion and a ring portion The substrate portion is rotatably coupled to the outer circumference of the shaft center, and the annular wall portion is disposed on an outer circumference of the substrate portion; a plurality of blades, one end of each of the blades is a joint end, and the joint end is coupled to the ring wall portion An outer side, wherein the joint end coincides with the ring wall portion in a radial direction of the rotor; and an outer cover, the outer cover includes a first cover body and a second cover body, wherein the iron core and the rotor are disposed on the first cover body Between the second cover and the second cover, the cover is provided with a plurality of slots for the respective blades to pass through, wherein the combined ends of the blades are provided with a first joint portion, and the ring wall portion of the motor casing is far away One side of the substrate portion is provided with a radial extension portion, and the radial extension portion is provided with a plurality of second joint portions for combining the first joint portions of the respective blades, between the ring wall portion of the motor casing and the outer cover A gap is formed which is provided for a weight. The ceiling fan according to claim 1, wherein the annular wall portion extends from the substrate portion to the radially extending portion along an axial direction of the rotor, and the radial extending portion faces away from the annular wall portion The direction of the axis extends. The ceiling fan of claim 1, wherein the rotor comprises a permanent magnet group disposed inside the ring wall portion. The ceiling fan of claim 1, wherein the fan blade extends in a radial direction of one of the rotors, and the motor casing of the rotor has a first surface in a plane perpendicular to the radial direction. The projection range, the combined end of the blade has a second projection range on the plane, and the second projection range overlaps all or part of the first projection range. The ceiling fan of claim 1, wherein the weight is coupled to the ring wall portion. The ceiling fan of claim 1, wherein the weight is combined with the radial direction Extension. The ceiling fan of claim 1 or 2, wherein the first joint portion of the blade is a perforation, the second joint portion is a fixing hole, and a locking member passes through the first joint portion. The hole is perforated and locked to the fixing hole of the second joint portion to couple the joint end of the blade to the motor casing. The ceiling fan of claim 1, wherein the center of the iron core of the stator has a shaft hole through which the shaft core passes, and the stator is further provided with an assembly plate. The iron core faces the inner circumference of the shaft hole, and the assembled plate shields the iron core in the axial direction of the rotor. A ceiling fan according to claim 8, wherein a lamp is additionally provided, and the lamp is coupled to the assembled plate. The ceiling fan of claim 9, further comprising a cover, the cover comprises a first cover and a second cover, wherein the core, the assembly plate and the rotor are disposed on the first cover and Between the second covers, the cover is provided with a plurality of slots for the passage of the blades, the second cover faces the assembly plate, and the second cover is made of a light transmissive material. The ceiling fan of claim 1, wherein the fan blades are made of a non-metallic material.