TWI670915B - Motor and its rotor - Google Patents

Abstract

The invention relates to a motor and a rotor thereof. The motor includes a rotor and a stator. The rotor includes a magnet frame and a plurality of magnets. The magnet frame has a plurality of partitions and a plurality of receiving slots, and each of the receiving slots is located between two adjacent partitions. The magnets are respectively disposed in the receiving slots of the magnet frame. The stator ring is provided on the periphery of the rotor.

Description

Motor and its rotor

The invention relates to a motor and a rotor thereof.

The rotor in the conventional motor is attached with a magnet, and in order to achieve a stable and balanced operation of the rotor, the distance between the magnets must be controlled uniformly. However, fixing the magnets by means of sticking requires a long time for sticking, and it is quite difficult to control the distance between the magnets uniformly.

Therefore, it is necessary to provide an innovative and progressive motor and its rotor to solve the above problems.

In one embodiment, a motor includes a rotor and a stator. The rotor includes a magnet frame and a plurality of magnets. The magnet frame has a plurality of partitions and a plurality of receiving slots, and each of the receiving slots is located between two adjacent partitions. The magnets are respectively disposed in the receiving slots of the magnet frame. The stator ring is provided on the periphery of the rotor.

In one embodiment, a rotor includes a magnet frame and a plurality of magnets. The magnet frame has a plurality of partitions and a plurality of receiving slots, and each of the receiving slots is located between two adjacent partitions. The magnets are respectively disposed in the receiving slots of the magnet frame.

FIG. 1 shows an exploded perspective view of a motor of the present invention. FIG. 2 shows a perspective assembled view of the motor of the present invention. With reference to FIGS. 1 and 2, the motor 1 of the present invention includes a rotor 10 and a stator 20.

Figure 3 shows a perspective view of a rotor according to the invention. With reference to FIGS. 1 and 3, the rotor 10 includes a magnet frame 11 and a plurality of magnets 12.

Figure 4 shows a bottom view of the rotor of the invention. As shown in FIG. 1, FIG. 3 and FIG. 4, the magnet frame 11 has a plurality of partition plates 111 and a plurality of receiving grooves 112. The partition plates 111 are arranged at a regular interval in a ring shape, and each of the partition plates 111 has an outer edge 111E. Each of the accommodation grooves 112 is located between two adjacent partition plates 111.

In addition, the magnet frame 11 includes a cylindrical portion 113 and an annular plate portion 114. The annular plate portion 114 is connected to one end of the cylindrical portion 113.

Figure 5 shows a perspective view of a rotor of the present invention with a magnetically permeable liner. With reference to FIG. 1 and FIG. 5, in one embodiment, the cylindrical portion 113, the partition plates 111 and the annular plate portion 114 can be integrally injection molded, and the injection molding material can be plastic or metal and plastic. A composite material, and a magnetically permeable lining 115 is preferably provided in the cylindrical portion 113. Alternatively, in another embodiment, the magnet frame 11 can be made of a magnetically permeable material. In one embodiment, the cylindrical portion 113 and the partitions 111 can be integrally injection-molded. The injection-molding material can be plastic, a composite material of metal and plastic, or a composite material of magnetic powder and plastic.

Referring again to FIG. 1, FIG. 3 and FIG. 4, in this embodiment, the cylindrical portion 113 has an outer peripheral surface 113S, and the partition plates 111 are protruded from the outer peripheral surface 113S. The annular plate portion 114 has an outer peripheral edge 114E, and the outer edge 111E of each of the partition plates 111 does not protrude from the outer peripheral edge 114E of the annular plate portion 114.

The magnets 12 are respectively disposed in the receiving slots 112 of the magnet frame 11. In this embodiment, the magnets 12 can be magnetically attached to the receiving grooves 112 of the magnet frame 11. And preferably, the groove shape of each of the accommodating grooves 112 matches the outer shape of each of the magnets 12. In addition, the magnets 12 are arranged in a magnet ring R.

FIG. 6 shows a perspective view of a rotor of the present invention with a hollow casing and a support. With reference to FIG. 1, FIG. 4, and FIG. 6, in one embodiment, the rotor 10 may include a hollow housing 13. The hollow housing 13 is used to receive the magnet frame 11 and the magnets 12.

The hollow casing 13 has an inner wall surface 13S. Preferably, the outer peripheral edge 114E of the annular plate portion 114 abuts the inner wall surface 13S.

In one embodiment, the outer diameter D2 of the annular plate portion 114 is greater than or equal to the inner diameter d of the hollow shell 13, so that the annular plate portion 114 fits tightly with the inner wall surface 13S.

Alternatively, in another embodiment, the outer peripheral edge 114E of the annular plate portion 114 may be welded and joined to the inner wall surface 13S, and the welding joint method is preferably a ring laser welding.

In order that the magnet ring R can be put into the hollow housing 13 together with the magnet frame 11, preferably, the outer diameter D1 of the magnet ring R is smaller than or equal to the outer diameter D2 of the annular plate portion 114.

In addition, the rotor 10 may also include a supporting member 14, which is opposite to the annular plate portion 114, and the magnets 12 are located between the supporting member 14 and the annular plate portion 114. The supporting member 14 can limit the magnets 12 on the magnet frame 11, and can prevent the magnets 12 from falling off during high-speed rotation. In an embodiment, the cylindrical portion 113, the annular plate portion 114, the hollow shell 13 and the support member 14 can form a closed space, so that the magnets 12 are in the closed space to achieve rust prevention. The effect.

FIG. 7 is a sectional view showing a motor of the present invention applied to a water pump. With reference to FIGS. 1, 2 and 7, the motor 1 of the present invention can be applied to a water pump 2. The stator 20 is disposed on the periphery of the rotor 10, and the stator 20 is electrically connected to a control circuit board 30.

In addition, according to the structural configuration of the motor 1, the rotor 10 has a rotor magnetic center line L1, and the stator 20 has a certain magnetic center line L2. When the rotor magnetic center line L1 and the stator magnetic center line L2 are on the same straight line, the rotor 10 moves up when the motor 1 is turned on, and falls when the motor 1 stops running, and generates noise.

To avoid the above situation, in this embodiment, the rotor magnetic center line L1 and the stator magnetic center line L2 are not on the same straight line, and preferably, the rotor magnetic center line L1 is located on the stator magnetic center line L2. Below.

Referring again to FIG. 1 and FIG. 3, the magnets 12 of the present invention can be magnetically attracted to each of the receiving grooves 112 of the magnet frame 11. Therefore, the assembly time can be greatly shortened, and the distance between the magnets 12 can be greatly reduced. Reach consensus.

The above embodiments are only for explaining the principle of the present invention and its effects, and not for limiting the present invention. Therefore, those skilled in the art can modify and change the above embodiments without departing from the spirit of the present invention. The scope of rights of the present invention should be listed in the scope of patent application described later.

1‧‧‧ Motor

10‧‧‧ rotor

11‧‧‧Magnet holder

111‧‧‧ partition

111E‧‧‧Rim

112‧‧‧Receiving trough

113‧‧‧ tube

113S‧‧‧outer surface

114‧‧‧ Ring plate section

114E‧‧‧Outer periphery

115‧‧‧ magnetic lining

12‧‧‧ Magnet

13‧‧‧ hollow shell

13S‧‧‧Inner wall surface

14‧‧‧ support

20‧‧‧ Stator

30‧‧‧Control circuit board

2‧‧‧ water pump

D1‧‧‧ Outside diameter of magnet ring

D2‧‧‧ Outer diameter of annular plate

d‧‧‧Inner diameter of hollow shell

L1‧‧‧ rotor magnetic centerline

L2‧‧‧ stator magnetic centerline

R‧‧‧Magnet ring

FIG. 1 shows an exploded perspective view of a motor of the present invention.

FIG. 2 shows a perspective assembled view of the motor of the present invention.

Figure 3 shows a perspective view of a rotor according to the invention.

Figure 4 shows a bottom view of the rotor of the invention.

Figure 5 shows a perspective view of a rotor of the present invention with a magnetically permeable liner.

FIG. 6 shows a perspective view of a rotor of the present invention with a hollow casing and a support.

FIG. 7 is a sectional view showing a motor of the present invention applied to a water pump.

Claims (28)

A motor includes: a rotor including: a magnet frame having a plurality of partition plates and a plurality of accommodating slots, each of the accommodating slots being located between two adjacent partition plates, the magnet frame including a cylindrical portion and a ring A shape plate portion, the annular plate portion is connected to one end of the cylindrical portion; and a plurality of magnets are respectively arranged in the receiving slots of the magnet frame; and a certain ring is arranged on the periphery of the rotor. The motor of claim 1, wherein the cylindrical portion is integrally injection molded with the partitions. The motor of claim 1, wherein the cylindrical portion has an outer peripheral surface, and the partition plates are convexly provided on the outer peripheral surface. According to the motor of claim 1, wherein each of the partition plates has an outer edge, the annular plate portion has an outer peripheral edge, and the outer edge of each of the partition plates does not protrude from the outer peripheral edge of the annular plate portion. If the motor of claim 4, wherein the rotor further comprises a hollow shell, the hollow shell is used for accommodating the magnet frame and the magnets, the hollow shell has an inner wall surface, and the outer periphery of the annular plate portion abuts the Inner wall surface. The motor of claim 5, wherein the outer diameter of the annular plate portion is greater than or equal to the inner diameter of the hollow housing. For example, the motor of claim 1, wherein the magnets are arranged as a magnet ring, and the outer diameter of the magnet ring is smaller than or equal to the outer diameter of the annular plate portion. The motor of claim 1, wherein the rotor further includes a support member, and the magnets are located between the support member and the annular plate portion. The motor of claim 1, wherein the cylindrical portion, the partition plates, and the annular plate portion are integrally injection molded. The motor of claim 1, wherein a magnetically permeable liner is provided in the cylindrical portion. The motor of claim 1, wherein the groove shape of each of the accommodating grooves matches the outer shape of each of the magnets. If the motor of claim 1, wherein the rotor further comprises a hollow casing, the hollow casing is used for accommodating the magnet frame and the magnets. A rotor includes: a magnet frame having a plurality of partitions and a plurality of accommodating slots, each of the accommodating slots being located between two adjacent partitions, the magnet frame including a cylindrical portion and an annular plate portion, the The ring-shaped plate portion is connected to one end of the cylindrical portion; and a plurality of magnets are respectively disposed in the receiving slots of the magnet frame. The rotor as claimed in claim 13, wherein the cylindrical portion is integrally injection molded with the partitions. The rotor of claim 13, wherein the cylindrical portion has an outer peripheral surface, and the partition plates are convexly provided on the outer peripheral surface. According to the rotor of claim 13, wherein each of the partition plates has an outer edge, the annular plate portion has an outer peripheral edge, and the outer edge of each of the partition plates does not protrude from the outer peripheral edge of the annular plate portion. For example, the rotor of claim 16 further includes a hollow casing for receiving the magnet frame and the magnets. The hollow casing has an inner wall surface, and the outer periphery of the annular plate portion abuts the inner wall surface. The rotor of claim 17, wherein the outer diameter of the annular plate portion is greater than or equal to the inner diameter of the hollow housing. The rotor of claim 13, wherein the magnets are arranged in a magnet ring, and the outer diameter of the magnet ring is smaller than or equal to the outer diameter of the annular plate portion. The rotor of claim 13, wherein the rotor further comprises a support member, and the magnets are located between the support member and the annular plate portion. For example, the rotor of claim 13, wherein the cylindrical portion, the partition plates, and the annular plate portion are integrally injection molded. The rotor of claim 13, wherein a magnetically permeable liner is provided in the cylindrical portion. The rotor of claim 13, wherein the groove shape of each of the accommodating grooves matches the outer shape of each of the magnets. If the rotor of claim 13 further comprises a hollow casing, the hollow casing is used for accommodating the magnet frame and the magnets. A motor includes: a rotor including: a magnet frame having a plurality of partition plates and a plurality of accommodating slots, each of the accommodating slots being located between two adjacent partition plates, the magnet frame including a cylindrical portion, the The cylindrical portion has an outer peripheral surface, the partitions are convexly provided on the outer peripheral surface, and a magnetically permeable lining is provided in the cylindrical portion; and a plurality of magnets are respectively provided in the receiving slots of the magnet frame; A stator is provided on the periphery of the rotor. A motor includes: a rotor having a magnetic centerline of the rotor, the rotor including: a magnet frame having a plurality of partitions and a plurality of receiving slots, each of the receiving slots being located between two adjacent partitions; and A plurality of magnets are respectively disposed in each of the receiving slots of the magnet frame; and a stator is annularly arranged on the periphery of the rotor, the stator has a certain magnetic centerline of the rotor, and the magnetic centerline of the rotor is not in line with the magnetic centerline of the stator On the same straight line. The motor of claim 26, wherein the magnetic center line of the rotor is located below the magnetic center line of the stator. A rotor includes: a magnet frame having a plurality of partitions and a plurality of accommodating slots, each of the accommodating slots being located between two adjacent partitions, the magnet frame including a cylindrical portion, the cylindrical portion having a On the outer peripheral surface, the partitions are convexly disposed on the outer peripheral surface, and a magnetically permeable lining is disposed in the cylindrical portion; and a plurality of magnets are respectively disposed in the receiving slots of the magnet frame.