TW201803255A - Ceiling fan and motor thereof - Google Patents

Abstract

A ceiling fan and a motor of the ceiling fan are disclosed to reduce damage to the ceiling fan or motor when a bearing collapses. The motor of the ceiling fan comprises a shaft, a ball bearing, a rotor and a stator. The shaft includes a shoulder portion. The ball bearing includes an inner ring and an outer ring. The inner ring couples with the outer surface of the shaft and abuts against the shoulder portion. The rotor includes a sleeve with an inner surface coupling with the outer ring. The sleeve has a fixed portion abutting against the outer ring. The stator couples with the shaft. In directions perpendicular to an axial direction of the shaft, the minimum aperture of the sleeve is larger than the diameter of a section of the outer surface coupled to the inner ring, and the minimum aperture is smaller than the maximum outer diameter of the shaft or the inner ring.

Description

Ceiling fan and its motor

The invention relates to a ceiling fan and a motor thereof, in particular to a ceiling fan motor having a casing that can rotate relative to a boom, and a ceiling fan provided with the ceiling fan motor.

Referring to FIG. 1, it is a conventional ceiling fan 9. The ceiling fan 9 includes a boom 91 and a rotor 92, a ball bearing 93, a stator 94 and a number of blades 95. The ball bearing 93 is coupled to the outer periphery of the boom 91. The rotor 92 has a hub 921 which is disposed on the outer periphery of the ball bearing 93 so that the hub 921 is rotatably coupled to the boom 91. The stator 94 is fixed to the boom 91. The blades 95 are coupled to the hub 921, so that when the hub 921 rotates relative to the boom 91, the blades 95 can be used to drive wind to generate airflow. An embodiment of the conventional ceiling fan 9 has been disclosed in the patent case of the Republic of China Announcement No. I326959 "Improvement of DC Brushless Motors for Rotor Fans and Rotor Improvement".

In detail, the ball bearing 93 includes an inner ring member 931 and an outer ring member 932, the inner ring member 931 is coupled to the outer periphery of the suspension rod 91, and the outer ring member 932 is coupled to the hub 921. The outer ring member 932 can rotate relative to the inner ring member 931, so the hub 921 can be rotatably coupled to the boom 91.

Among them, the overall volume of the ceiling fan 9 is large, so the rotor 92 has a heavy weight, and the rotor 92 combines with the plurality of blades 95, so that the overall weight of the ball bearing 93 is heavy. According to this, when the ball bearing 93 ages due to long-term use, or the conventional ceiling fan 9 is subjected to an inappropriate external force, there may be a risk that the outer ring member 932 is collapsed by the ball bearing 93. Once the outer ring 932 collapses, the hub 921 will directly contact the stator 94, which may be The ceiling fan 9 causes irreversible damage. Moreover, the stator 94 is not designed for load bearing, so it is more likely that the stator 94 cannot withstand the impact of the rotor 92, causing the rotor 92 and the blade 95 to fall directly.

In view of this, there is an urgent need to provide a further improved ceiling fan to improve the safety of the ceiling fan.

An object of the present invention is to provide a ceiling fan and its motor, including a boom, a ball bearing and a rotor, so that when the ball bearing accidentally collapses in the outer ring, the boom or the inner ring of the ball bearing is used The piece cushions the force of the rotor falling.

In order to achieve the foregoing object of the invention, the technical means used in the present invention include: a ceiling fan motor, including: a boom with a shoulder; a ball bearing including an inner ring member and an outer ring Part, the inner ring part is joined to the outer peripheral surface of the boom, and the inner ring part abuts the shoulder; a rotor, the rotor includes a set of tubes, the inner surface of the sleeve is combined with the outer ring part, the set The tube is provided with a resisting portion, the resisting portion abuts the outer ring; and the stator, the stator is combined with the boom; wherein, in a direction perpendicular to one of the axis of the boom, the outer periphery of the boom The portion where the surface is combined with the inner ring member has a diameter, the sleeve has a minimum hole diameter that is greater than the diameter, the inner ring member of the boom or the ball bearing has a maximum outer diameter, and the minimum hole diameter is smaller than the Maximum outer diameter.

Wherein, the two ends of the boom are a first end and a second end respectively, the shoulder is facing the first end, and the retaining portion abuts the side of the outer ring toward the first end Surface, the stator joins the second end of the boom.

Wherein, an outer diameter surface of the suspension rod is provided with a diameter enlarged portion, and the shoulder portion is formed on the side of the diameter enlarged portion facing the first end portion. Thereby, the hanger rod can use the enlarged diameter portion to form the shoulder portion, so that the retaining portion and the shoulder portion can provide a preload to the ball bearing from both sides of the axial direction.

A ceiling fan motor according to another embodiment of the present invention, wherein the center of the casing is provided with a consistent The suspension rod passes through the through hole, the sleeve is provided with a stop portion, the stop portion extends toward the through hole beyond the retaining portion, and the surface of the stop portion facing the through hole has the smallest aperture. Thereby, the stop portion will overlap the inner ring member or the shoulder in the axial direction, and even if the outer ring member collapses by the ball bearing, the stop portion will be able to contact the inner ring member or the shoulder, In order to cushion the rotor's falling force.

The ceiling fan motor as described above, wherein the outer diameter of the enlarged diameter portion is smaller than the outer diameter of the inner ring member, and the inner ring member has the maximum outer diameter, whereby the minimum aperture can be smaller than the maximum outer diameter The stopper overlaps the inner ring in the axial direction.

The ceiling fan motor as described above, wherein the stopper is a ring-shaped projection, the projection is combined with the inner surface of the sleeve, or integrally formed with the sleeve. In this way, the blocking portion can extend beyond the retaining portion toward the through hole, so that the diameter of the hole surrounding the surface of the blocking portion toward the through hole is the minimum diameter.

The ceiling fan motor as described above, wherein the stopper is a plurality of spaced protrusions, and the protrusions are respectively combined with the inner surface of the sleeve or integrally formed with the sleeve. Thereby, the blocking portion can extend beyond the retaining portion toward the through hole, so that the diameter of each hole facing the hole surrounded by the surface of the through hole is still the minimum diameter.

A ceiling fan motor according to still another embodiment of the present invention, wherein the boom is provided with a stopper on the outer circumference of the enlarged diameter portion, the outer diameter of the stopper of the boom is greater than the outer diameter of the inner ring member, and the The stop has this maximum outer diameter. Thereby, the retaining portion will overlap the stopper in the axial direction, and even if the outer ring member collapses from the ball bearing, the retaining portion will be able to contact the stopper to cushion the force of the rotor falling.

The ceiling fan motor as described above, wherein the surface of the holding portion facing the through-hole has the minimum hole diameter, whereby the minimum hole diameter can be smaller than the maximum outer diameter, so that the holding portion is in the axial direction with the hanging The lever stoppers overlap.

The ceiling fan motor as described above, wherein the stopper of the boom is a ring-shaped projection, the projection is combined with the outer periphery of the enlarged diameter portion, or integrally formed with the enlarged diameter portion. By this, the only The stopper can protrude from the outer periphery of the enlarged diameter portion, so that the outer diameter of the stopper of the boom is the maximum outer diameter.

The ceiling fan motor as described above, wherein the diameter-expanding portion is provided with a plurality of fixing holes, and each fixing hole is used for combining a rod, each of the rods protrudes from the outer periphery of the diameter-expanding portion, and the protrusion is sleeved into the boom And each of the rods protrudes from a portion of the outer circumference of the enlarged diameter portion to form a bond on the outer circumference of the enlarged diameter portion. Thereby, the stopper of the boom can be snap-fitted on the outer periphery of the enlarged diameter portion.

The ceiling fan motor as described above, wherein the stopper of the boom is a plurality of spaced protrusions, and the protrusions are respectively combined on the outer periphery of the enlarged diameter portion or integrally formed with the enlarged diameter portion. Thereby, the stopper can protrude out of the outer periphery of the enlarged diameter portion, so that the outer diameter of the circumferential surface formed by the outer surface of each protruding block is still the maximum outer diameter.

A ceiling fan motor according to still another embodiment of the present invention, wherein the outer peripheral surface of the boom is provided with an enlarged diameter portion and a gasket, the gasket is disposed between the ball bearing and the enlarged diameter portion, and the shoulder portion is formed at The gasket faces one side of the first end, and the suspension rod is provided with an auxiliary bearing between the gasket and the enlarged diameter portion. The auxiliary bearing of the suspension rod includes an auxiliary inner ring member and an auxiliary outer ring The auxiliary inner ring member abuts the gasket and the enlarged diameter portion, respectively, the outer diameter of the auxiliary outer ring member is greater than the outer diameter of the enlarged diameter portion and the outer diameter of the inner ring member, so that the auxiliary The auxiliary outer ring of the bearing has this maximum outer diameter. Thereby, the retaining portion will overlap the auxiliary outer ring member in the axial direction, and even if the outer ring member collapses from the ball bearing, the retaining portion will be able to contact the auxiliary outer ring member to cushion the falling of the rotor In addition, if the outer ring collapses during rotation, the auxiliary outer ring will allow the sleeve to continue to rotate to reduce the stress that the rotor is exposed to when contacting the auxiliary outer ring.

The ceiling fan motor as described above, wherein the surface of the holding portion facing the through-hole has the minimum hole diameter, whereby the minimum hole diameter can be smaller than the maximum outer diameter, so that the holding portion is in the axial direction with the hanging The auxiliary outer rings of the auxiliary bearings of the rods overlap.

The ceiling fan motor of each embodiment of the present invention includes another ball bearing, the other ball bearing includes an inner ring member and an outer ring member, and the enlarged diameter portion forms another shoulder toward one side of the second end , The inner ring of the other ball bearing is coupled to the outer circumferential surface of the suspension rod and abuts the other At the shoulder portion, the rotor is provided with an elastic member that abuts a side surface of the outer ring member of the other ball bearing facing the second end. Thereby, the elastic member and the other shoulder of the suspension rod can provide a preload to the other ball bearing from both sides of the axial direction; on the other hand, by providing the other ball bearing, if the ball bearing When the outer ring member collapses, the other ball bearing can still provide a supporting force to maintain the relative position of the sleeve and the suspension rod to assist in cushioning the force of the rotor falling.

In the ceiling fan motors of the embodiments of the present invention, the diameter of the boom is larger than the inner diameter of the inner ring. Thereby, the inner ring member can form a tight fit with the boom, so that the inner ring member can be firmly coupled to the outer circumferential surface of the boom.

A ceiling fan is provided with the ceiling fan motor of each embodiment described above, wherein the rotor includes a hub, the hub is coupled to a side of the sleeve away from the holding portion, and the hub is coupled with a plurality of blades.

According to the foregoing structure, the ceiling fan and the motor of the embodiments of the present invention can be installed in the rotor due to the rotor, and the minimum aperture of the sleeve is smaller than the maximum outer diameter of the inner ring of the boom or the ball bearing. When the outer ring of the ball bearing collapses, the suspension rod or the inner ring is used to buffer the force of the rotor falling, and the rotor is prevented from directly contacting the components in the stator, so as to reduce the risk of accidental collapse of the outer ring The damage caused by the ceiling fan motor and avoiding the rotor falling situation have the effect of improving the safety of the ceiling fan.

〔this invention〕

1‧‧‧Boom

1a‧‧‧First end

1b‧‧‧second end

11‧‧‧ shoulder

11’‧‧‧ shoulder

12‧‧‧Expansion Department

121‧‧‧Fixed hole

13‧‧‧stop

13a‧‧‧Bump

14‧‧‧Bar

15‧‧‧gasket

16‧‧‧Auxiliary bearing

161‧‧‧ auxiliary inner ring

162‧‧‧Auxiliary outer ring

2‧‧‧Ball bearing

2’‧‧‧Ball bearings

21‧‧‧Inner ring

21’‧‧‧Inner ring

22‧‧‧Outer ring

22’‧‧‧Outer ring

23‧‧‧ball

23’‧‧‧ball

3‧‧‧Rotor

31‧‧‧Casing

311‧‧‧Through hole

312‧‧‧Consolidation Department

313‧‧‧stop

313a‧‧‧Bump

32‧‧‧Wheel

33‧‧‧Permanent magnet set

34‧‧‧Elastic parts

4‧‧‧ Stator

41‧‧‧Iron core

42‧‧‧coil

X‧‧‧axial

R1‧‧‧Diameter

R2‧‧‧Minimum aperture

R3‧‧‧Maximum outer diameter

〔Knowledge〕

9‧‧‧ Ceiling fan

91‧‧‧Boom

92‧‧‧Rotor

921‧‧‧Wheel

93‧‧‧Ball bearing

931‧‧‧Inner ring

932‧‧‧Outer ring

94‧‧‧ Stator

95‧‧‧blade

Figure 1: Sectional view of the structure of a conventional ceiling fan.

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

FIG. 3 is a schematic sectional view of the structure of the first embodiment of the present invention.

FIG. 4 is an exploded and enlarged schematic view of the structure of the stop portion of the first embodiment of the present invention including a plurality of protrusions.

Fig. 5 is a schematic exploded view of the structure of the second embodiment of the present invention.

Fig. 6 is a schematic sectional view of the structure of the second embodiment of the present invention.

FIG. 7 is an exploded and enlarged schematic view of the structure of the stopper of the second embodiment of the present invention including several protrusions.

Fig. 8 is an exploded enlarged schematic view of the structure in which the stopper of the second embodiment of the present invention is coupled to the outer periphery of the enlarged diameter portion.

Fig. 9 is a schematic cross-sectional view of the structure in which the stopper of the second embodiment of the present invention is combined with the outer periphery of the enlarged diameter portion.

Fig. 10 is a schematic sectional view of the structure of the third embodiment of the present invention.

In order to make the above and other objects, features and advantages of the present invention more obvious and understandable, the preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, which are described in detail as follows: please refer to Figures 2 and 3 The ceiling fan motor shown in the first embodiment of the present invention includes a boom 1, a ball bearing 2, a rotor 3, and a stator 4. The ball bearing 2 and the stator 4 are coupled to the boom 1 respectively, and the rotor 3 is coupled to the ball bearing 2.

The two ends of the boom 1 in the axial direction X are a first end 1a and a second end 1b, respectively. The boom 1 has a shoulder 11 facing the first end 1a Moreover, the outer circumferential surface of the suspension rod 1 is preferably provided with an enlarged diameter portion 12, and the shoulder portion 11 may be formed on a side of the enlarged diameter portion 12 facing the first end portion 1a. Wherein, the enlarged-diameter portion 2 may be integrally formed on the boom 1; or, the enlarged-diameter portion 12 may be a separate member sleeved on the outer circumferential surface of the boom 1 to join the boom 1 and form the shoulder 11.

The ball bearing 2 includes an inner ring member 21 and an outer ring member 22, and a plurality of balls 23 can be provided between the inner ring member 21 and the outer ring member 22, so that the outer ring member 22 can face the inner ring member 21 Spin. The inner ring member 21 is coupled to the outer circumferential surface of the boom 1, and the inner ring member 21 abuts the shoulder portion 11, and the shoulder portion 11 does not contact the outer ring member 22.

The rotor 3 includes a set of tubes 31 with a through hole 311 in the center The through hole 311 penetrates the sleeve 31 along the axial direction X. The suspension rod 1 passes through the through hole 311 so that at least a part of the suspension rod 1 overlaps with the sleeve 31 in a direction perpendicular to the axial direction X, and the inner surface of the sleeve 31 joins the outer ring member 23. The sleeve 31 is provided with a resisting portion 312 that extends toward the through hole 311, the resisting portion 312 abuts a surface of the outer ring member 23 facing the first end 1 a, and the resisting portion The fixed portion 312 does not contact the inner ring 21. Thereby, the retaining portion 312 and the shoulder portion 11 of the suspension rod 1 can provide a preload to the ball bearing 2 from both sides of the axial direction X. The rotor 3 may further include a hub 32 coupled to the side of the sleeve 3 away from the retaining portion 312. A permanent magnet group 33 may be provided on the inner surface of the hub 32.

The stator 4 may be coupled to the second end 1b of the boom 1. The stator 4 may include an iron core 41, an air gap is formed between the iron core 41 and the permanent magnet group 33 of the rotor 3, and a coil 42 may be wound around the outer periphery of the iron core 41.

The portion where the outer peripheral surface of the suspension rod 1 is combined with the inner ring member 21 has a diameter R1 in a direction perpendicular to the axial direction X. The diameter R1 is usually slightly larger than or equal to that of the inner ring member 21 of the ball bearing 2 The inner diameter enables the inner ring member 21 to be firmly coupled to the outer circumferential surface of the boom 1, for example, when the diameter R1 is greater than the inner diameter of the inner ring member 21, the inner ring member 21 can be connected to the boom 1 Form a tight fit combination. The sleeve 31 has a minimum aperture R2 in a direction perpendicular to the axial direction X, and the inner ring 21 of the suspension rod 1 or the ball bearing 2 has a maximum outer diameter R3 in a direction perpendicular to the axial direction X . However, in some embodiments of the present invention, the diameter R1 may also be slightly smaller than the inner diameter of the inner ring member 21 of the ball bearing 2, and through dispensing between the outer peripheral surface of the suspension rod 1 and the inner ring member 21 Or an additional coupling structure is provided to form the inner ring 21 to be firmly coupled to the outer circumferential surface of the boom 1.

Wherein, the minimum aperture R2 is larger than the diameter R1, so that the boom 1 can pass through the sleeve 31 and maintain a distance from the sleeve 31. In addition, the maximum outer diameter R3 is the greater of the maximum outer diameter of the portion where the boom 1 overlaps the sleeve 31 and the maximum outer diameter of the inner ring 21. The minimum aperture R2 is smaller than the maximum outer diameter R3; in other words, the sleeve 31 has the minimum The position of the aperture R2 will overlap the position where the boom 1 or the inner ring 21 has the maximum outer diameter R3 in the axial direction X. The position of the sleeve 31 having the smallest aperture R2 is a first position, the position of the boom 1 or the inner ring 21 having the largest outer diameter R3 is a second position, the first position is in the axial direction X The upper part is located above the second position; in other words, the vertical height of the first position is higher than the second position.

More specifically, in this embodiment, the sleeve 31 is provided with a stop portion 313, the stop portion 313 is located between the resisting portion 312 and the second end portion 1b of the boom 1, and the stop The stop portion 313 extends toward the through hole 311 beyond the resisting portion 312. Accordingly, the diameter of the stop portion 313 facing the hole surrounded by the surface of the through hole 311 is the minimum diameter R2. On the other hand, although the portion where the boom 1 overlaps the sleeve 31 is provided with an enlarged diameter portion 12, the outer diameter of the enlarged diameter portion 12 may be smaller than the outer diameter of the inner ring member 21, so the inner ring member 21 The outer diameter is the maximum outer diameter R3. By making the minimum hole diameter R2 smaller than the maximum outer diameter R3, the stop portion 313 will overlap the inner ring 21 in the axial direction X.

In this embodiment, the stopper 313 may be a single convex ring-shaped projection, and the convex block may be integrated on the inner surface of the sleeve 31 or integrally formed with the sleeve 31; Referring to FIG. 4, in some embodiments of the present invention, the stopping portion 313 may also be a plurality of spaced apart protrusions 313a, and each of the protrusions 313a still faces the hole of the hole surrounded by the surface of the through hole 311 For the minimum hole diameter R2, the plurality of protrusions 313a may also be combined with the inner surface of the sleeve 31 or integrally formed with the sleeve 31.

When the ceiling fan motor of the first embodiment of the present invention is actually in operation, the first end 1a of the boom 1 can be combined with a predetermined position such as a ceiling or a wall to fix the ceiling fan motor. Since the sleeve 31 of the suspension rod 1 and the rotor 3 respectively couple the inner ring member 21 and the outer ring member 22 of the ball bearing 2, the rotor 3 can be rotatably coupled to the suspension rod 1. The stator 4 can generate magnetic ripple induction with the permanent magnet group 33 of the rotor 3 after the coil 42 is energized to drive the hub 32 and the sleeve 31 to rotate. The hub 32 can also be combined with several blades (not shown) to make the The ceiling fan motor of the first embodiment can form a ceiling fan to use the blade to drive wind to generate airflow.

With the above structure, the ceiling fan motor of the first embodiment of the present invention is provided with the sleeve 31, and the minimum aperture R2 of the sleeve 31 is greater than the maximum outer diameter of the inner ring 21 of the boom 1 or the ball bearing 2 The diameter R3 allows the stopper 313 to overlap the inner ring 21 or the shoulder 11 in the axial direction X. According to this, even if the outer ring member 22 collapses from the ball bearing 2, the stopper 313 will be able to contact the ring member 21 or the shoulder portion 11 to cushion the falling force of the rotor 3 and prevent the rotor 3 from directly contacting The components in the stator 4 are in contact to reduce damage to the ceiling fan motor.

Furthermore, the ball bearing 2 and the boom 1 are both designed for load bearing, so the material and structural strength of the ball bearing 2 and the boom 1 are better than the stator 4 and can effectively withstand the impact of the rotor 3 to To prevent the rotor 3 from falling.

It is worth noting that in this embodiment, another ball bearing 2 'may be included, and the other ball bearing 2' also includes an inner ring member 21 'and an outer ring member 22'. The enlarged diameter portion 12 may form another shoulder portion 11 ′ toward one side of the second end portion 1 b, and the inner ring 21 ′ of the other ball bearing 2 ′ is coupled to the outer circumferential surface of the suspension rod 1 and abuts The other shoulder 11 '. The rotor 3 is provided with an elastic member 34 which is coupled to the hub 32 or the sleeve 31, and the elastic member 34 abuts the outer ring member 22 'of the other ball bearing 2' toward the second end 1b Side surface. Thereby, the elastic member 34 and the other shoulder portion 11 'of the boom 1 can provide a preload to the other ball bearing 2' from both sides of the axial direction X. By providing the other ball bearing 2 ', if the outer ring 22 of the ball bearing 2 collapses, the other ball bearing 2' can still provide a supporting force to maintain the sleeve 31 and the boom 1 relative to each other Position to help cushion the force of the rotor 3 falling.

Please refer to Figs. 5 and 6, which is a ceiling fan motor according to a second embodiment of the present invention. The difference from the foregoing first embodiment is that the boom 1 is further provided with a stopper on the outer periphery of the enlarged portion 12 13. The outer diameter of the stopper 13 of the boom 1 is greater than the outer diameter of the inner ring 21, so that the outer diameter of the stopper 13 is the maximum outer diameter R3. By this, by making the minimum aperture R2 smaller than the maximum Outer diameter R3, the retaining portion 312 will overlap the stopper 13 in the axial direction X, even if the outer ring member 22 is collapsed by the ball bearing 2, the retaining portion 312 (or the retaining portion 312 together with The collapsed portion of the outer ring member 22 will be able to contact the stopper member 13 to cushion the force of the rotor 3 falling down.

In detail, the stopper 13 of the suspension rod 1 may be a single convex block in the shape of a ring, and the convex block may be combined with the outer circumference of the enlarged diameter portion 12 or integrally formed with the enlarged diameter portion 12, so that the The stopper 13 can protrude from the outer periphery of the enlarged diameter portion 12; however, referring to FIG. 7, in some embodiments of the present invention, the stopper 13 of the boom 1 may also be a plurality of spaced protrusions The block 13a enables the stopper 13 to protrude beyond the outer circumference of the enlarged diameter portion 12, so the outer diameter of the circumferential surface formed by the outer surface of each of the protrusions 13a is still the maximum outer diameter R3, the number The bumps 13a may be respectively coupled to the outer circumference of the enlarged diameter portion 12, or integrally formed with the enlarged diameter portion 12. The stopper 13 can be coupled to the outer periphery of the enlarged diameter portion 12 by various methods such as locking, snapping, or tenon jointing. For example, please refer to FIGS. 8 and 9, the enlarged diameter portion 12 of the boom 1 A plurality of fixing holes 121 may be provided, and each fixing hole 121 is used for combining a rod member 14, each of the rod members 14 protrudes from the outer periphery of the enlarged diameter portion 12, whereby the stopper 13 of the suspension rod 1 may be A ring-shaped single projection, the projection can be fitted into the suspension rod 1 and abut on each portion of the rod 14 projecting on the outer periphery of the enlarged diameter portion 12 to form a joint on the outer periphery of the enlarged diameter portion 12. Wherein, each of the fixing holes 121 may be a screw hole, so that each of the rods 14 can be screwed into each of the fixing holes 121 correspondingly.

Please refer to FIG. 10, which is a ceiling fan motor according to a third embodiment of the present invention. The difference from the foregoing second embodiment is that the outer surface of the suspension rod 1 is additionally provided with a gasket 15 which is provided Between the ball bearing 2 and the enlarged diameter portion 12, the shoulder portion 11 is formed on a side of the washer 15 facing the first end portion 1 a, and the inner ring 21 abuts the shoulder portion 11. On the other hand, the boom 1 is further provided with an auxiliary bearing 16 between the gasket 15 and the enlarged diameter portion 12. The auxiliary bearing 16 of the boom 1 includes an auxiliary inner ring member 161 and an auxiliary outer ring member 162 The auxiliary outer ring 162 can rotate relative to the auxiliary inner ring 161. The auxiliary inner ring member 161 abuts the gasket 15 and the enlarged diameter portion 12 respectively. The outer diameter of the auxiliary outer ring 162 is greater than the outer diameter of the enlarged diameter portion 12 and the The outer diameter of the inner ring member 21 makes the outer diameter of the auxiliary outer ring member 162 the maximum outer diameter R3. In other words, the auxiliary outer ring 162 of the auxiliary bearing 16 of the boom 1 will have the maximum outer diameter R3. Thereby, by making the minimum hole diameter R2 smaller than the maximum outer diameter R3, the retaining portion 312 will overlap the auxiliary outer ring member 162 in the axial direction X, even if the outer ring member 22 is collapsed by the ball bearing 2, The retaining portion 312 will be able to contact the auxiliary outer ring 162 to cushion the falling force of the rotor 3, and since the auxiliary outer ring 162 can rotate relative to the auxiliary inner ring 161, if the outer ring 22 is attached to During the rotation, the auxiliary outer ring 162 will allow the hub 32 and the sleeve 31 to continue to rotate, so as to reduce the stress that the rotor 3 is exposed to when contacting the auxiliary outer ring 162.

Wherein, the auxiliary outer ring member 162 of the auxiliary bearing 16 may be combined with the inner surface of the sleeve 31 to rotate with the sleeve 31; or, the auxiliary outer ring member 162 may be held with the inner surface of the sleeve 31 The spacing allows the auxiliary outer ring 162 to remain fixed when the hub 32 and the sleeve 31 rotate, and the invention is not limited to this.

In summary, the ceiling fan motor of the embodiment of the present invention is provided with the sleeve 3 of the rotor 3, and the minimum aperture R2 of the sleeve 31 is greater than the maximum outer diameter of the inner ring 21 of the boom 1 or the ball bearing 2 Diameter R3, when the outer ring member 22 of the ball bearing 2 is collapsed by the ball bearing 2, the suspension rod 1 or the inner ring member 21 can be used to cushion the falling force of the rotor 3, and avoid the rotor 3 directly contacting the stator The components in 4 are in contact to reduce damage to the ceiling fan motor when the outer ring 22 accidentally falls.

Furthermore, the ball bearing 2 and the suspension rod 1 are both designed for load bearing, so the material and structural strength of the inner ring 21 of the ball bearing 2 and the suspension rod 1 are better than the stator 4 and can effectively bear the The impact of the rotor 3 to prevent the rotor 3 from falling down does have the effect of improving the safety of the ceiling fan.

Although the present invention has been disclosed using the above preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art without departing from the spirit and scope of the present invention, making various changes and modifications with respect to the above embodiments still belongs to the present invention. The technical scope protected by the invention The scope of protection shall be deemed as defined by the scope of the attached patent application.

1‧‧‧Boom

1a‧‧‧First end

1b‧‧‧second end

11‧‧‧ shoulder

11’‧‧‧ shoulder

12‧‧‧Expansion Department

2‧‧‧Ball bearing

2’‧‧‧Ball bearings

21‧‧‧Inner ring

21’‧‧‧Inner ring

22‧‧‧Outer ring

22’‧‧‧Outer ring

3‧‧‧Rotor

31‧‧‧Casing

311‧‧‧Through hole

312‧‧‧Consolidation Department

313‧‧‧stop

32‧‧‧Wheel

34‧‧‧Elastic parts

4‧‧‧ Stator

41‧‧‧Iron core

42‧‧‧coil

X‧‧‧axial

Claims (17)

A ceiling fan motor includes: a boom with a shoulder; a ball bearing including an inner ring member and an outer ring member, the inner ring member is coupled to the outer peripheral surface of the boom, and The inner ring member abuts the shoulder; a rotor, the rotor includes a set of tubes, the inner surface of the sleeve is combined with the outer ring member, the sleeve is provided with a resisting portion, the resisting portion abuts the outer ring And stator, the stator is combined with the suspension rod; wherein, in a direction perpendicular to one of the axis of the suspension rod, the outer circumferential surface of the suspension rod and the inner ring member are combined with a diameter, the sleeve It has a minimum aperture, the minimum aperture is larger than the diameter, the inner ring of the suspension rod or the ball bearing has a maximum outer diameter, and the minimum aperture is smaller than the maximum outer diameter. The ceiling fan motor as described in item 1 of the patent application scope, wherein the two ends of the boom are respectively a first end and a second end, the shoulder is directed to the first end, and the retaining portion abuts The outer ring member faces a side surface of the first end, and the stator joins the second end of the boom. The ceiling fan motor as described in item 2 of the patent application scope, wherein the outer circumferential surface of the boom is provided with a diameter-increasing portion, and the shoulder portion is formed on the side of the diameter-increasing portion facing the first end portion. The ceiling fan motor as described in item 3 of the patent application scope, wherein a through hole is provided in the center of the sleeve, the suspension rod passes through the through hole, and the sleeve is provided with a stop portion, the stop portion faces the through hole Extending beyond the resisting portion, the surface of the blocking portion facing the through hole has the smallest aperture. The ceiling fan motor as described in item 4 of the patent application scope, wherein the outer diameter of the enlarged diameter portion is smaller than the outer diameter of the inner ring member, the inner ring member has the maximum outer diameter, and the stopper portion is in the axial direction and The inner ring pieces overlap. The ceiling fan motor as described in item 4 or 5 of the patent application scope, wherein the stopper is a ring-shaped projection, the projection is combined with the inner surface of the sleeve, or integrally formed with the sleeve. The ceiling fan motor as described in item 4 or 5 of the patent application scope, wherein the stopper is a plurality of spaced protrusions, the protrusions are respectively combined on the inner surface of the sleeve, or integrated with the sleeve forming. The ceiling fan motor as described in item 3 of the patent application scope, wherein the hanger is provided with a stopper on the outer circumference of the enlarged diameter portion, the outer diameter of the stopper of the hanger is greater than the outer diameter of the inner ring, the The stop of the boom has this maximum outer diameter. The ceiling fan motor as described in item 8 of the patent application range, wherein the surface of the holding portion facing the through hole has the smallest aperture, and the holding portion overlaps the stopper of the boom in the axial direction. The ceiling fan motor as described in item 8 or 9 of the patent application scope, wherein the stopper of the boom is a ring-shaped projection, the projection is combined with the outer periphery of the enlarged diameter portion, or is connected to the enlarged diameter portion One piece. The ceiling fan motor as described in item 10 of the patent application scope, wherein the enlarged-diameter portion is provided with a plurality of fixing holes, each of the fixing holes is provided for combining a rod member, and each of the rod members protrudes from the outer circumference of the enlarged-diameter portion The block fits into the suspension rod and abuts each part of the rod that protrudes from the outer circumference of the enlarged diameter portion to form a joint on the outer circumference of the enlarged diameter portion. The ceiling fan motor as described in item 8 or 9 of the patent application scope, wherein the stopper of the boom is a plurality of spaced protrusions, and the protrusions are respectively combined on the outer circumference of the enlarged diameter portion, or combined with the expansion The diameter part is integrally formed. The ceiling fan motor as described in item 2 of the patent application scope, wherein the outer peripheral surface of the boom is provided with an enlarged diameter portion and a gasket, the gasket is disposed between the ball bearing and the enlarged diameter portion, the shoulder It is formed on the side of the gasket facing the first end. The suspension rod is provided with an auxiliary bearing between the gasket and the enlarged diameter portion. The auxiliary bearing of the suspension rod includes an auxiliary inner ring member and a Auxiliary outer ring member, the auxiliary inner ring member respectively abuts against the gasket and the enlarged diameter portion, the outer diameter of the auxiliary outer ring member is greater than the outer diameter of the enlarged diameter portion and the outer diameter of the inner ring member, so that the hanging The auxiliary outer ring of the auxiliary bearing of the rod has this maximum outer diameter. The ceiling fan motor as described in item 13 of the patent application scope, wherein the retaining portion faces the through hole The surface has the smallest aperture, and the resisting portion overlaps the auxiliary outer ring of the auxiliary bearing of the boom in the axial direction. The ceiling fan motor as described in items 3, 4, 5, 8, 9, 13 or 14 of the patent application scope, which includes another ball bearing, the other ball bearing including an inner ring member and an outer ring member, the The enlarged diameter portion forms another shoulder portion toward one side of the second end portion, the inner ring member of the other ball bearing is coupled to the outer peripheral surface of the suspension rod and abuts the other shoulder portion, and the rotor is provided with an elastic member , The elastic member abuts a side surface of the outer ring member of the other ball bearing toward the second end. The ceiling fan motor as described in items 1, 2, 3, 4, 5, 8, 9, 13, or 14 of the patent application scope, wherein the diameter of the suspension rod is larger than the inner diameter of the inner ring. A ceiling fan is provided with a ceiling fan motor as described in items 1, 2, 3, 4, 5, 8, 9, 13 or 14 of the patent application scope, wherein the rotor includes a hub, the hub is coupled to the sleeve away from the One side of the resisting portion, and the hub combines several blades.