TWM585006U - Outer rotor mounting structure of outer rotation motor - Google Patents

Abstract

This creation proposes an external rotor mounting structure for an external rotation motor, which includes a fixed shaft at the center of the top of the casing of the external rotation motor casing, so that the external rotation motor casing can rotate on the fixed shaft; Outer rotor. The outer rotor has an outer ring, an inner ring, a magnet ring, a magnet spacer ring and most permanent magnets. The sealed magnet ring is circumferentially combined between the outer ring and the inner ring. The magnet spacer ring The magnet is surrounded by the inner side of the sealed magnet ring, and the magnet spacer ring is provided with a plurality of accommodating holes, and the permanent magnet is respectively fixed in the accommodating hole of the magnet spacer ring, thereby being spaced from the magnet by the outer ring, the inner ring The ring fixes the permanent magnet to prevent the permanent magnet from loosening.

Description

External rotor mounting structure

This creation is about an external rotation motor, especially an improved external rotor mounting structure for an external rotation motor applied to a large ceiling fan.

Today's ceiling fans have generally used an external rotation motor that combines the outer rotor on the inner wall of the motor case, and the inner stator is connected to a fixed shaft in the center of the motor. The outer rotor and the motor case are driven to rotate by the magnetic field of the electromagnet of the inner stator. In addition, the fan blades fixed above or below the motor casing are driven to rotate. The conventional outer rotor is implemented with a plurality of permanent magnets corresponding to the inner stator. Since permanent magnets are not easy to be locked, they are usually adhered to the inner wall of the magnet-sealing ring in the motor casing, at most between the permanent magnets. Add spacer positioning. However, the technology of sticking permanent magnets is easy to cause the permanent magnets to come loose, which affects the service life of the motor. For this reason, how to overcome the shortcomings of the permanent magnet that cannot be locked and the permanent magnet's adhesive structure is easy to loose, this is the subject to be actively overcome.

The main purpose of this creation is to provide an outer rotor mounting structure for an external rotation motor, which is used to fix a permanent magnet through an outer ring, an inner ring, and a magnet spacer ring of the outer rotor of the ceiling fan motor, without using an adhesive to fix the permanent The magnet can further prevent the permanent magnet from loosening and increase the life of the ceiling fan motor.

In order to achieve the above purpose, the present invention provides a rotor mounting structure for an outer rotation motor. A preferred technical solution includes: an outer rotation motor case, the outer rotation motor case having a shell top and a side wall surrounding the top of the shell, the shell The center of the top is provided with a fixed shaft on which the outer rotation motor shell can rotate; an outer rotor having an outer ring fixed on an inner wall surface of a side wall of the outer rotation motor shell An inner ring, which is fixed on the inner side of the outer ring; a magnet ring, the sealed magnet ring is circumferentially combined between the outer ring and the inner ring; a magnet spacer ring, The magnet spacer ring is circumferentially coupled to the inner side of the sealed magnet ring. The magnet spacer ring is provided with a plurality of receiving holes arranged in a ring shape. Most of the permanent magnets are respectively fixed to the accommodation of the magnet spacer ring. A hole so that each of the permanent magnets is covered between the outer ring and the inner ring and fixed by the magnet spacer ring.

In the external rotor mounting structure of the external rotation motor, the fixed shaft is provided with an internal stator, the internal stator has a stator fixed to the fixed shaft and located in the external rotation motor housing, and a plurality of electromagnetics coupled around the stator. iron.

In the above-mentioned outer rotor motor mounting structure, the outer ring and the inner ring are each made of a stainless steel ring sheet, and the inner side of the outer ring has a groove, the sealed magnetic ring, the magnet spacer ring and The permanent magnet is received in the groove.

In the external rotor mounting structure of the outer rotation motor, the upper end and the lower end of the outer ring and the inner ring are respectively welded and fixed by a welding portion.

In the above-mentioned outer rotor mounting structure of the outer rotation motor, the upper end and the lower end of the outer ring and the inner ring are respectively fixed to each other in a rolling and pressure-sealing manner through a joint portion.

In the above-mentioned external rotor motor mounting structure, the magnet spacer ring is a ring body formed by connecting a plurality of arc-shaped spacers, and each of the spacers is provided with the accommodation hole.

The creation of the outer rotor mounting structure of the outer rotation motor, the technology of clamping the magnet spacer ring by an outer ring and an inner ring of the outer rotor of the ceiling fan motor, and installing the permanent magnet in the receiving hole of the magnet spacer ring, The structure of fixing the permanent magnet without using a conventional adhesive can achieve the effects of preventing the permanent magnet from loosening and increasing the service life of the external rotation motor.

The structural features of this creation, as well as other functions and purposes, are explained in detail in accordance with the embodiments of the drawings as follows:

Referring to FIG. 1, FIG. 2 and FIG. 3, the outer rotor mounting structure of the outer rotation motor of the present invention. The preferred embodiment of the outer rotation motor includes an outer rotation motor case 10, an outer rotor 20 and an inner stator 30. Through the magnetic driving action between the outer rotor 20 and the inner stator 30, the outer rotor 20 and the outer rotation motor case 10 are rotated, thereby driving a plurality of blades 50 fixed on the outer rotation motor case 10 to rotate.

Referring again to FIG. 2, one of the above-mentioned preferred embodiments of the outer rotation motor housing 10 is a housing integrally molded of aluminum alloy material, and may also be implemented as a housing formed by combining in other ways. Its main structure has a The top of the casing 11, a side wall 12 surrounding the top of the casing 11, and a plurality of fan fixing portions 13 formed on the top of the casing 11, and a fixed shaft 40 is provided at the center of the top of the casing 11 to enable the outer rotation motor casing 10 can be used to be driven by the outer rotor 20 to rotate on the fixed shaft 40, and to drive a plurality of fan blades 50 to rotate at the same time.

Referring to FIG. 4, FIG. 5 and FIG. 6, the outer rotor 20 has a circular outer ring 21 and an inner ring 22. The outer ring 21 is fixed to the side wall 12 of the outer rotation motor case 10. An inner wall surface, and the inner ring 22 is fixed on the inner side of the outer ring 21; a magnet ring 23, the sealed magnet ring 23 is circumferentially coupled between the outer ring 21 and the inner ring 22; A magnet spacer ring 24 is circumferentially coupled to the inner side of the sealing magnet ring 23. The magnet spacer ring 24 is provided with a plurality of receiving holes 241 arranged in a ring shape; and a plurality of permanent magnets 25, each of which is permanent The magnets 25 are respectively fixed in the accommodating holes 241 of the magnet spacer ring 24, so that the permanent magnets 25 are covered between the outer ring 21 and the inner ring 22 and fixed by the magnet spacer ring 24. . The inner stator 30 described above mainly includes a stator 31 fixed on the fixed shaft 40 and located in the outer rotation motor case 10, and a plurality of electromagnets 32 coupled around the stator 31, so that the electromagnet 32 can generate The magnetic field drives the outer rotor 20 and the outer rotation motor case 10 to rotate.

Referring again to FIGS. 4 to 6, the outer ring 21 and the inner ring 22 of the outer rotor 20 are each made of a stainless steel ring sheet, and the inner side of the outer ring 21 is formed by rolling or stamping. The groove 211 allows the sealed magnet ring 23, the magnet spacer ring 24, and the permanent magnet 25 to be received in the groove 211, and then the inner ring 22 is coupled to the inner side of the outer ring 21, and The upper and lower ends of the outer ring 21 and the inner ring 22 are respectively welded and fixed by a welding portion 26, and the sealed magnet ring 23, the magnet spacer ring 24 and the permanent magnet 25 are permanently fixed to the outer ring 21 and the inner ring. Between the rings 22, the effect of preventing the permanent magnet 25 from falling off can be achieved. In addition, when the outer ring 21 and the inner ring 22 of the outer rotor 20 are applied by rolling and crimping, the welding portion 26 can serve as a rolling and crimping joint, so that the outer ring 21 It can be firmly combined with the inner ring 22 so as not to fall off. In addition, referring to FIG. 7, one of the above-mentioned preferred embodiments of the magnet spacer ring 24 is a circular ring body formed by connecting a plurality of arc-shaped spacers 242, and each of the arc-shaped spacers 242 is provided with the foregoing. The receiving hole 241 makes it easier to set the magnet spacer ring 24 in the groove 211 of the outer ring 21.

To sum up, the external rotor mounting structure of this creative external rotation motor is indeed practical and creative. The use of its technical means is also novel and undoubted, and the efficacy and design purpose are indeed in line with each other. . To this end, a new type of patent application was filed in accordance with the law, but I would like to ask Jun Bureau for detailed review and to grant the patent as a prayer.

10‧‧‧External motor housing

11‧‧‧shell top

12‧‧‧ sidewall

13‧‧‧Fan blade fixing part

20‧‧‧ Outer rotor

21‧‧‧outer ring

211‧‧‧groove

22‧‧‧Inner ring

23‧‧‧magnet ring

24‧‧‧Magnet spacer ring

241‧‧‧Receiving hole

242‧‧‧ spacer

25‧‧‧Permanent magnet

26‧‧‧Welding Department

30‧‧‧Inner stator

31‧‧‧ stator

32‧‧‧Electromagnet

40‧‧‧Fixed shaft

50‧‧‧ fan leaf

FIG. 1 is a schematic perspective view of a preferred embodiment of a fan-equipped ceiling fan external rotation motor. FIG. 2 is a cross-sectional perspective view of a preferred embodiment of the creative rotation motor. FIG. 3 is an exploded perspective view of a preferred embodiment of an outer rotation motor casing and an outer rotor. FIG. 4 is an exploded perspective view of a preferred embodiment of the outer rotor of the invention. FIG. 5 is a schematic cross-sectional view of the components of the outer rotor in an exploded state. FIG. 6 is a schematic sectional view of the combined state of the components of the outer rotor of the creation. FIG. 7 is an exploded view of the preferred embodiment of the creative magnet spacer ring.

Claims (6)

An external rotation motor mounting structure for an external rotation motor includes: an external rotation motor casing having a top of a casing and a side wall surrounding the top of the casing; a center of the top of the casing is provided with a fixed shaft; The motor casing can rotate on the fixed shaft; an outer rotor having an outer ring fixed to an inner wall surface of a side wall of the outer rotation motor casing; an inner ring fixed to the inner ring On the inner side of the outer ring; a magnet ring, the sealed magnet ring is circumferentially coupled between the outer ring and the inner ring; a magnet spacer ring, the magnet spacer ring is circumferentially coupled to the sealed magnet On the inner side of the ring, the magnet spacer ring is provided with a plurality of accommodating holes arranged in a ring shape; for most permanent magnets, each of the permanent magnets is respectively fixed to the accommodation hole of the magnet spacer ring, so that each of the permanent magnets is covered. Between the outer ring and the inner ring and fixed by the magnet spacer ring. The outer rotor mounting structure of an outer rotation motor according to claim 1, wherein the fixed shaft is provided with an inner stator, the inner stator has a stator fixed to the fixed shaft and located in the outer rotation motor casing, and a plurality of combinations An electromagnet around the stator. The outer rotor mounting structure of the outer rotation motor according to claim 1, wherein the outer ring and the inner ring are each made of a stainless steel ring sheet, the inner side of the outer ring has a groove, and the magnet ring is sealed. The magnet spacer ring and the permanent magnet are accommodated in the groove. The outer rotor mounting structure of the outer rotation motor according to claim 3, wherein the upper end and the lower end of the outer ring and the inner ring are respectively welded and fixed by a welding portion. The outer rotor mounting structure of the outer rotation motor according to claim 3, wherein the upper end and the lower end of the outer ring and the inner ring are respectively fixed together by rolling and sealing by a joint. The outer rotor mounting structure of the outer rotation motor according to claim 1, wherein the magnet spacer ring is a ring body formed by connecting most arcuate spacers, and each of the spacers is provided with the accommodation hole.