TWI674736B - Motor rotor - Google Patents

Abstract

The invention relates to a motor rotor. The motor rotor includes a magnet assembly, a connection plate, and an impeller. The magnet assembly has one end portion. The connecting plate is connected to the end portion of the magnet assembly. The impeller is coupled to the connection plate.

Description

Motor rotor

The invention relates to a motor rotor.

It is known that the combination of the magnet and the impeller of the rotor of a water pump motor generally adopts a socket or a tight fit. However, the above combination is susceptible to the long-term effect of the water flow, which causes the two to disengage and cause the motor to fail.

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

In one embodiment, a motor rotor includes a magnet assembly, a connection plate, and an impeller. The magnet assembly has one end portion. The connecting plate is connected to the end portion of the magnet assembly. The impeller is coupled to the connection plate.

FIG. 1 shows an exploded perspective view of a motor rotor of the present invention. FIG. 2 shows a perspective assembled view of a motor rotor of the present invention. FIG. 3 shows another exploded view of the motor rotor of the present invention. With reference to FIG. 1, FIG. 2 and FIG. 3, the motor rotor 1 of the present invention includes a magnet assembly 10, a connection plate 20 and an impeller 30.

FIG. 4 shows a sectional view of a combined motor rotor of the present invention. With reference to FIG. 1, FIG. 2 and FIG. 4, the magnet assembly 10 has one end portion 11, and the magnet assembly 10 includes a lining 101, a housing 102, at least one magnet 103, an upper seal ring 104 and a lower seal ring 105. . The casing 102 is ringed around the periphery of the lining 101. The at least one magnet 103 is disposed between the inner liner 101 and the outer casing 102. The upper seal ring 104 is disposed above the at least one magnet 103. The lower seal ring 105 is disposed below the at least one magnet 103. Preferably, the inner lining 101, the outer casing 102, the upper seal ring 104 and the lower seal ring 105 are made of metal.

In one embodiment, the upper seal ring 104 is welded to the inner liner 101 and the outer shell 102, and the lower seal ring 105 is also welded to the inner liner 101 and the outer shell 102.

FIG. 5 shows an exploded perspective view of a magnet assembly and a connecting plate according to the present invention. FIG. 6 is a perspective assembled view of a magnet assembly and a connecting plate according to the present invention. As shown in FIG. 1, FIG. 5 and FIG. 6, the connecting plate 20 is connected to the end portion 11 of the magnet assembly 10. In this embodiment, the connecting plate 20 is made of metal, and preferably, the connecting plate 20 is joined to the end portion 11 by laser welding.

In this embodiment, the magnet assembly 10 has a first outer diameter D1, and the end portion 11 has a ring groove 11U. The connecting plate 20 has a second outer diameter D2. Preferably, the second outer diameter D2 is greater than or equal to the first outer diameter D1. In addition, the connecting plate 20 has a plurality of perforations 20H, and the perforations 20H communicate with the ring groove 11U.

Referring again to FIG. 1, FIG. 3, and FIG. 4, the impeller 30 is coupled to the connecting plate 20, and the impeller 30 includes an impeller portion 31 and a cover portion 32.

The leaf disc portion 31 is coupled to the connecting plate 20, and preferably, the leaf disc portion 31 is coupled to the connecting plate 20 by injection molding. In this embodiment, a portion 31P of the leaf disc portion 31 is extended into the perforations 20H of the connecting plate 20 and the ring groove 11U of the end portion 11 by injection molding.

Referring again to FIG. 2, FIG. 3 and FIG. 4, the blade disc portion 31 has a top surface 31S and a plurality of blades 31B, and the blades 31B are protruded from the top surface 31S.

The cover plate portion 32 is joined to the leaf plate portion 31. The cover portion 32 has an upper surface 32A, a lower surface 32B, and a plurality of engaging grooves 32U. The engaging grooves 32U are recessed in the lower surface 32B. In this embodiment, there is a gap G between the lower surface 32B of the cover plate portion 32 and the top surface 31S of the leaf plate portion 31.

In addition, each of the engaging grooves 32U abuts each of the blades 31B, and preferably, each of the engaging grooves 32U and each of the blades 31B are ultrasonically welded. In this embodiment, each of the blades 31B has an upper edge 31F, and each of the engaging grooves 32U and the upper edge 31F of each of the blades 31B are welded by ultrasound.

In order to improve the bonding strength between the cover plate portion 32 and each of the blades 31B, preferably, the welding length of each of the engaging grooves 32U and each of the blades 31B is about one-fifth to one-fifth of the length of each of the blades 31B. four.

In the present invention, the connection plate 20 is combined with the magnet assembly 10 and the impeller 30 to make the combination of the two more stable. Even under the long-term action of water flow, the separation will not occur, so the long-term effectiveness of the water pump motor can be maintained. Operational.

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 rotor

10‧‧‧Magnet assembly

11‧‧‧ tip

11U‧‧‧Ring groove

20‧‧‧ connecting board

20H‧‧‧perforation

30‧‧‧ Impeller

31‧‧‧ Ye Pan Department

31B‧‧‧ Blade

31F‧‧‧ Upper edge

31P‧‧‧Part of the leaf plate

31S‧‧‧Top

32‧‧‧ cover section

32A‧‧‧ Top surface

32B‧‧‧ lower surface

32U‧‧‧Joint slot

101‧‧‧lining

102‧‧‧Shell

103‧‧‧Magnet

104‧‧‧upper seal ring

105‧‧‧lower seal ring

D1‧‧‧first outer diameter

D2‧‧‧Second outer diameter

G‧‧‧Pitch

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

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

FIG. 3 shows another exploded view of the motor rotor of the present invention.

FIG. 4 shows a sectional view of a combined motor rotor of the present invention.

FIG. 5 shows an exploded perspective view of a magnet assembly and a connecting plate according to the present invention.

FIG. 6 is a perspective assembled view of a magnet assembly and a connecting plate according to the present invention.

Claims (17)

A motor rotor includes: a magnet assembly having one end; a connecting plate joined to the end of the magnet assembly; and an impeller coupled to the connecting plate, the impeller includes an impeller portion and a cover portion, The blade disc portion is coupled to the connecting plate, and the cover plate portion is joined to the blade disc portion. The motor rotor of claim 1, wherein the connecting plate is welded to the end. The motor rotor according to claim 2, wherein the connecting plate is joined to the end by laser welding. The motor rotor of claim 1, wherein the magnet assembly has a first outer diameter, and the connecting plate has a second outer diameter, the second outer diameter being greater than or equal to the first outer diameter. The motor rotor according to claim 1, wherein the blade portion is coupled to the connecting plate by injection molding. The motor rotor according to claim 1, wherein the blade disc portion has a plurality of blades, and the cover plate portion has a plurality of engagement grooves, and each of the engagement grooves butts each of the blades. The motor rotor according to claim 6, wherein each of the engaging grooves and each of the blades are ultrasonically welded. The motor rotor according to claim 7, wherein each of the blades has an upper edge, and each of the engaging grooves and the upper edge of each of the blades are ultrasonically welded. The motor rotor according to claim 7, wherein the welding length of each of the engaging groove and each of the blades is about one fifth to four fifths of the length of each blade. The motor rotor according to claim 6, wherein the cover plate portion has an upper surface and a lower surface, and the engaging grooves are recessed on the lower surface. The motor rotor according to claim 1, wherein the end portion has a ring groove, the connecting plate has a plurality of perforations, and a part of the blade disc portion extends into the perforations and the ring groove. The motor rotor according to claim 11, wherein a part of the blade portion extends into the perforations and the ring groove by injection molding. The motor rotor of claim 1, wherein the blade portion has a top surface, the cover plate portion has a lower surface, and a distance is formed between the lower surface of the cover plate portion and the top surface of the blade disk portion. The motor rotor according to claim 13, wherein the blade portion has a plurality of blades, and the blades are convexly arranged on the top surface. A motor rotor includes: a magnet assembly having an end with a ring groove; a connecting plate joined to the end of the magnet assembly, the connecting plate having a plurality of perforations, the perforations communicating with the ring groove ; And an impeller, combined with the connecting plate. A motor rotor includes a magnet assembly having one end. The magnet assembly includes an inner lining, an outer casing, at least one magnet, an upper sealing ring and a lower sealing ring. The outer casing ring is provided on the outer periphery of the inner lining. At least one magnet is disposed between the inner lining and the outer shell, the upper sealing ring is disposed above the at least one magnet, the lower sealing ring is disposed below the at least one magnet; a connecting plate is joined to the magnet assembly The end; and an impeller, combined with the connecting plate. The motor rotor of claim 16, wherein the upper seal ring is welded to the inner liner and the outer casing, and the lower seal ring is welded to the inner liner and the outer casing.