TWI698300B - Antirust rotor for magnetic parts and motor structure using the same - Google Patents

Abstract

The invention relates to a rust-proof rotor for magnetic parts and a motor structure using the same. The anti-rust rotor with magnetic parts includes an inner lining, a shell, a magnetic part, an upper sealing ring and a lower sealing ring. The outer shell is arranged around the periphery of the inner liner. The magnetic part is arranged between the inner liner and the outer shell. The upper sealing ring is arranged above the magnetic part, and the upper sealing ring is joined to the inner liner and the outer shell. The lower sealing ring is arranged under the magnetic part, and the lower sealing ring is joined to the inner liner and the outer shell.

Description

Anti-rust rotor of magnetic parts and motor structure using it

The invention relates to a rust-proof rotor for magnetic parts and a motor structure using the same.

Most of the rotor magnets in the motor structure of the conventional water pump use ferrite, so it can be directly immersed in water. However, when the performance of the ferrite rotor magnet does not meet the requirements, it must be replaced with a rotor magnet made of rare earth materials. However, although this type of rotor magnet has higher performance, it is easy to rust when immersed in water.

Therefore, it is necessary to provide an innovative and progressive motor structure and its magnetic parts anti-rust rotor to solve the above-mentioned problems.

In one embodiment, a rust-proof rotor with magnetic parts includes an inner lining, a shell, a magnetic part, an upper sealing ring and a lower sealing ring. The outer shell is arranged around the periphery of the inner liner. The magnetic part is arranged between the inner liner and the outer shell. The upper sealing ring is arranged above the magnetic part, and the upper sealing ring is joined to the inner liner and the outer shell. The lower sealing ring is arranged under the magnetic part, and the lower sealing ring is joined to the inner liner and the outer shell.

In one embodiment, a motor structure uses a rust-proof rotor with magnetic parts as described above.

Figure 1 shows a three-dimensional exploded view of the motor structure of the present invention. Figure 2 shows a three-dimensional assembly view of the motor structure of the present invention. Fig. 3 shows a cross-sectional view of the motor structure of the present invention taken along line A-A in Fig. 2. With reference to Figures 1, 2 and 3, the motor structure 1 of the present invention includes a first cover 10, a pivot 20, a magnetic rust-proof rotor 30, a sealing cover 40, a stator 50 and a second盖体60。 Cover 60.

The first cover 10 has a shaft seat 10P, a water inlet portion 101 and a water outlet portion 102, and the position of the water outlet portion 102 is lower than that of the water inlet portion 101.

The pivot 20 is disposed on the shaft seat 10P of the first cover 10.

Fig. 4 shows an enlarged view of the partial area B in Fig. 3. Figure 5 shows a three-dimensional cross-sectional view of the rust-proof rotor of the magnetic element of the present invention. With reference to Figures 3, 4 and 5, the magnetic rust-proof rotor 30 is sleeved on the pivot 20, and the magnetic rust-proof rotor 30 includes an inner lining 31, a housing 32, a magnetic member 33, and a Upper sealing ring 34 and lower sealing ring 35.

The inner liner 31 is a hollow cylindrical shape, and the inner liner 31 has a first upper end 311, a first lower end 312 and an outer wall 31S. The first lower end 312 is opposite to the first upper end 311. The outer wall surface 31S extends between the first upper end 311 and the first lower end 312. Preferably, the lining 31 is a magnetically conductive lining to improve the conduction of magnetic force.

The outer shell 32 is arranged around the periphery of the inner lining 31. The shell 32 is in the shape of a hollow cylinder, and the shell 32 has a second upper end 321, a second lower end 322 and an inner wall surface 32S. The second lower end 322 is opposite to the second upper end 321. The inner wall surface 32S extends between the second upper end portion 321 and the second lower end portion 322.

The magnetic member 33 is disposed between the inner liner 31 and the outer shell 32. The magnetic member 33 has an upper surface 33A and a lower surface 33B. In an embodiment, the magnetic member 33 may include a plurality of magnets.

The upper sealing ring 34 is disposed above the magnetic member 33, and preferably, the upper sealing ring 34 is in contact with the upper surface 33A of the magnetic member 33. In addition, the upper sealing ring 34 is joined to the inner liner 31 and the outer shell 32, and preferably, the upper sealing ring 34 is welded to join the inner liner 31 and the outer shell 32, and the welding method is an annular laser Welding is better.

The cross section of the upper sealing ring 34 is U-shaped, and the upper sealing ring 34 has a ring groove 34U and an upper end 34E. Preferably, the upper end 34E is welded to the outer wall surface 31S of the lining 31 And the inner wall surface 32S of the housing 32. Referring to FIG. 9, it is a schematic diagram showing the integral molding of the upper sealing ring, the inner liner and the outer shell of the present invention. In the embodiment of FIG. 9, the upper sealing ring 34, the inner liner 31 and the outer shell 32 are integrally formed.

The lower sealing ring 35 is disposed under the magnetic member 33, and preferably, the lower sealing ring 35 is in contact with the lower surface 33B of the magnetic member 33. In addition, the lower sealing ring 35 is joined to the inner liner 31 and the outer shell 32, and preferably, the lower sealing ring 35 is welded to the inner liner 31 and the outer shell 32, and the welding method is an annular laser Welding is better.

The cross section of the lower sealing ring 35 is U-shaped, and the lower sealing ring 35 has a ring groove 35U and a lower end 35E. Preferably, the lower end 35E is welded to the outer wall surface 31S of the inner lining 31 And the inner wall surface 32S of the housing 32. Referring to FIG. 10, it is a schematic diagram showing the integral molding of the lower sealing ring, inner liner and outer shell of the present invention. In the embodiment of FIG. 10, the lower sealing ring 35, the inner liner 31 and the outer shell 32 are integrally formed.

Fig. 6 shows a schematic diagram of the sealing material of the present invention being filled in the vent hole. 4, 5 and 6, in this embodiment, the inner liner 31, the outer shell 32, the upper sealing ring 34 and the lower sealing ring 35 form a closed space S, and preferably, the The inner liner 31, the outer shell 32, the upper sealing ring 34 and the lower sealing ring 35 are made of metal materials. In this embodiment, the upper sealing ring 34 may have a gas filling hole 34H, the gas filling hole 34H is located in the ring groove 34U, and the gas filling hole 34H is connected to the closed space S for filling to confirm whether the closed space S is present or not. leakage. After confirming that there is no leakage, a sealing material 70 can be filled in the gas filling hole 34H to completely seal the closed space S. In addition, the gas filling hole 34H can also be used for positioning or fixing. Or, in another embodiment, the gas filling hole may be provided in the lower sealing ring 35.

Fig. 7 shows a three-dimensional cross-sectional view of a rust-proof rotor with magnetic parts according to another embodiment of the present invention. With reference to Figures 5 and 7, in order to effectively reduce the height of the magnetic element rust-proof rotor 30 to achieve the effect of thinning the motor structure 1, the upper end 34E of the upper sealing ring 34 does not protrude from the lining 31 The first upper end 311 and the second upper end 321 of the housing 32, the lower end 35E of the lower sealing ring 35 does not protrude from the first lower end 312 of the inner liner 31 and the housing 32 The second lower end 322. And preferably, the upper end 34E of the upper sealing ring 34 is flush with the first upper end 311 of the inner liner 31 and the second upper end 321 of the outer shell 32, and the lower end of the lower sealing ring 35 35E is flush with the first lower end 312 of the inner liner 31 and the second lower end 322 of the shell 32.

Refer to FIG. 8, which shows a three-dimensional cross-sectional view of a rust-preventing rotor for magnetic parts according to another embodiment of the present invention. In another embodiment, the upper end 34E of the upper sealing ring 34 can protrude from the first upper end 311 of the inner liner 31 and the second upper end 321 of the shell 32, and the lower sealing ring 35 The lower end 35E can protrude from the first lower end 312 of the inner liner 31 and the second lower end 322 of the shell 32. According to the above design, the upper sealing ring 34 has an inner ring wall 341 and an outer ring wall 342. The inner ring wall 341 is welded to the first upper end 311 of the inner liner 31, and the outer ring wall 342 is welded It is joined to the second upper end 321 of the housing 32. Corresponding to the above configuration of the upper sealing ring 34, the lower sealing ring 35 also has an inner ring wall 351 and an outer ring wall 352, and the inner ring wall 351 is welded to the first lower end 312 of the inner lining 31 The outer ring wall 352 is welded to the second lower end 322 of the housing 32.

Referring again to FIGS. 1, 2 and 3, the sealing cover 40 is combined with the first cover body 10. The sealing cover 40 has an accommodating portion 40U, and the accommodating portion 40U is used for accommodating the magnetic element rust-proof rotor 30.

The stator 50 is arranged around the periphery of the receiving portion 40U of the sealing cover 40. In this embodiment, the stator 50 is electrically connected to a control circuit board 80.

The second cover 60 is combined with the sealing cover 40 to seal the stator 50 and the control circuit board 80 so as to prevent the stator 50 and the control circuit board 80 from contacting with water and being short-circuited.

3 and 5 again, the rust-proof rotor 30 for magnetic parts of the present invention can effectively seal the magnetic parts 33 to prevent the magnetic parts 33 from being rusted by contact with water. In addition, the anti-rust rotor 30 of the magnetic part can be combined with an impeller 90 so that the motor structure 1 constitutes a water pump.

The motor structure 1 of the present invention is an example of a motor structure used in a water pump, but not limited to this. The motor structure 1 and the magnetic part anti-rust rotor 30 of the present invention are suitable for any type of magnetic parts that need to be strengthened to prevent rust motor.

The above-mentioned embodiments only illustrate the principles and effects of the present invention, and do not limit the present invention. Therefore, those skilled in the art can modify and change the above-mentioned 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 structure 10‧‧‧First cover 101‧‧‧Water inlet 102‧‧‧Water outlet 10P‧‧‧Shaft seat 20‧‧‧Pivot 30‧‧‧Magnetic part rust-proof rotor 31 ‧‧‧Inner lining 311‧‧‧First upper end 312‧‧‧First lower end 31S‧‧‧Outer wall surface 32‧‧‧Shell 321‧‧‧Second upper end 322‧‧‧Second lower end 32S ‧‧‧Inner wall surface 33‧‧‧Magnetic part 33A‧‧‧Upper surface 33B‧‧‧Lower surface 34‧‧‧Upper sealing ring 341‧‧‧Inner ring wall 342‧‧‧Outer ring wall 34E‧‧‧Upper end 34H‧‧‧Blow hole 34U‧‧‧ring groove 35‧‧‧lower sealing ring 351‧‧‧inner ring wall 352‧‧‧outer ring wall 35E‧‧‧lower end 35U‧‧‧ring groove 40‧‧‧seal Cover 40U‧‧‧Containing part 50‧‧‧Stator 60‧‧‧Second cover 70‧‧‧Sealing material 80‧‧‧Control circuit board 90‧‧‧Impeller S‧‧‧Enclosed space

Figure 1 shows a three-dimensional exploded view of the motor structure of the present invention.

Figure 2 shows a three-dimensional assembly view of the motor structure of the present invention.

Fig. 3 shows a cross-sectional view of the motor structure of the present invention taken along line A-A in Fig. 2.

Fig. 4 shows an enlarged view of the partial area B in Fig. 3.

Figure 5 shows a three-dimensional cross-sectional view of the rust-proof rotor of the magnetic element of the present invention.

Fig. 6 shows a schematic diagram of the sealing material of the present invention being filled in the vent hole.

Fig. 7 shows a three-dimensional cross-sectional view of a rust-proof rotor with magnetic parts according to another embodiment of the present invention.

Fig. 8 shows a three-dimensional cross-sectional view of a rust-proof rotor with magnetic parts according to another embodiment of the present invention.

Fig. 9 shows a schematic diagram of the integral molding of the upper sealing ring, inner liner and outer shell of the present invention.

Fig. 10 shows a schematic diagram of the integral molding of the lower sealing ring, inner liner and outer shell of the present invention.

30‧‧‧Magnetic parts rust-proof rotor

31‧‧‧Inner lining

311‧‧‧First upper end

312‧‧‧First lower end

31S‧‧‧Outer wall

32‧‧‧Shell

321‧‧‧Second upper end

322‧‧‧Second lower end

32S‧‧‧Inner wall

33‧‧‧Magnetic Parts

33A‧‧‧Upper surface

33B‧‧‧Lower surface

34‧‧‧Upper sealing ring

34E‧‧‧Upper end

34H‧‧‧Blow hole

34U‧‧‧ring groove

35‧‧‧Lower sealing ring

35E‧‧‧Lower end

35U‧‧‧ring groove

S‧‧‧Closed space

Claims (21)

An anti-rust rotor with magnetic parts, comprising: an inner lining; an outer shell arranged around the periphery of the inner lining; a magnetic part arranged between the inner lining and the outer shell; and an upper sealing ring arranged on the magnetic part And the lower sealing ring is arranged below the magnetic member, and the lower sealing ring is joined to the inner lining and the outer casing; wherein the inner lining is Magnetically conductive lining. For example, the rust-proof rotor for magnetic parts of claim 1, wherein the inner lining, the outer shell, the upper sealing ring and the lower sealing ring constitute a closed space. For example, the rust-proof rotor for magnetic parts of claim 2, wherein the upper sealing ring has an air filling hole, and the air filling hole communicates with the enclosed space. For example, the rust-proof rotor for magnetic parts of claim 3 further includes a sealing material, which is filled in the gas filling hole. For example, the rust-proof rotor for magnetic parts according to claim 3, wherein the upper sealing ring has a ring groove, and the gas filling hole is located in the ring groove. According to the rust-proof rotor for magnetic parts of claim 1, wherein the upper sealing ring is welded to the inner liner and the outer shell, and the lower seal ring is welded to the inner liner and the outer shell. Such as claim 6, wherein the lining has an outer wall surface, the shell has an inner wall surface, the upper sealing ring has an upper end, and the upper end is welded to the outer wall surface of the inner lining And the inner wall surface of the shell. For example, the anti-rust rotor for magnetic parts of claim 7, wherein the inner lining has a first upper end, the outer shell has a second upper end, and the upper end of the upper sealing ring does not protrude from the first end of the inner lining The upper end and the second upper end of the shell. Such as the rust-proof rotor for magnetic parts of claim 8, wherein the upper end of the upper sealing ring is flush with the first upper end of the inner liner and the second upper end of the shell. Such as claim 6, wherein the lining has an outer wall surface, the housing has an inner wall surface, the lower sealing ring has a lower end, and the lower end is welded to the outer wall surface of the inner lining And the inner wall surface of the shell. For example, the rust-proof rotor for magnetic parts of claim 10, wherein the inner lining has a first lower end, the shell has a second lower end, and the lower end of the lower sealing ring does not protrude from the first lower end of the inner lining The lower end and the second lower end of the housing. For example, the rust-proof rotor for magnetic parts of claim 11, wherein the lower end of the lower sealing ring is flush with the first lower end of the inner liner and the second lower end of the shell. For example, the rust-proof rotor for magnetic parts of claim 6, wherein the inner lining has a first upper end, the outer shell has a second upper end, the upper sealing ring has an inner ring wall and an outer ring wall, and the inner ring wall The outer ring wall is welded to the first upper end of the inner liner, and the outer ring wall is welded to the second upper end of the shell. For example, the rust-proof rotor for magnetic parts of claim 13, wherein the upper sealing ring has an upper end, and the upper end protrudes from the first upper end of the inner liner and the second upper end of the shell. For example, the anti-rust rotor for magnetic parts of claim 6, wherein the inner lining has a first lower end, the outer shell has a second lower end, the lower sealing ring has an inner ring wall and an outer ring wall, and the inner ring The wall is welded to the first lower end of the inner liner, and the outer ring wall is welded to the second lower end of the shell. For example, the rust-proof rotor for magnetic parts of claim 15, wherein the lower sealing ring has a lower end, and the lower end protrudes from the first lower end of the inner liner and the second lower end of the shell. Such as the rust-proof rotor for magnetic parts of claim 1, wherein the cross section of the upper sealing ring and the lower sealing ring is U-shaped. Such as the rust-proof rotor with magnetic parts of claim 1, wherein the magnetic parts have an upper surface and a lower surface The upper sealing ring is in contact with the upper surface, and the lower sealing ring is in contact with the lower surface. Such as the rust-proof rotor with magnetic parts of claim 1, wherein the upper sealing ring, the inner lining and the outer shell are integrally formed. Such as the rust-proof rotor with magnetic parts of claim 1, wherein the lower sealing ring, the inner lining and the outer shell are integrally formed. A motor structure that uses the anti-rust rotor with magnetic parts as in any one of claims 1-20.

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