TW201904174A - Counterweight rotor - Google Patents

Abstract

The present invention relates to a counterweight rotor, which comprises a rotor magnet body, a first counterweight rack, and a shaft. The rotor magnet body has a first end surface. The first counterweight rack is disposed on the first end surface of the rotor magnet body for arranging at least one counterweight object. The shaft is connected to the rotor magnet body. Thus, the present invention may achieve the effect of rotating balance, avoid generation of magnetic powder, and will not destroy the original magnetic force distribution of the rotor magnet body.

Description

Counterweight rotor

The invention relates to a rotor, and more particularly to a counterweight rotor.

It is known that in order to maintain the balance and stability of the motor rotor during rotation, the rotor will be brought into a rotationally balanced state by removing parts of the rotor magnets, thereby preventing the rotor from vibrating due to unbalanced rotation.

However, removing part of the rotor magnet will generate magnetic powder, and the magnetic powder will easily adhere to the surface of the rotor magnet and will not be easily removed. In addition, removing part of the rotor magnet will also destroy the original magnetic force distribution of the rotor magnet.

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

In one embodiment, a counterweight rotor includes a rotor magnet, a first counterweight frame, and a rotating shaft. The rotor magnet has a first end surface. The first counterweight frame is disposed on a first end surface of the rotor magnet, and is used for setting at least one counterweight. The rotating shaft is connected to the rotor magnet.

The counterweight rotor of the present invention can achieve the effect of rotation balance, can avoid the generation of magnetic powder, and will not destroy the original magnetic force distribution of the rotor magnet.

FIG. 1 shows a perspective view of a counterweight rotor according to a first embodiment of the present invention. FIG. 2 shows another perspective view of the counterweight rotor according to the first embodiment of the present invention. Fig. 3 shows a cross-sectional view of the counterweight rotor according to the first embodiment of the present invention, taken along line A-A of Fig. 1. With reference to FIGS. 1, 2 and 3, the counterweight rotor 10 of the present invention includes a rotor magnet 11, a first counterweight frame 12 and a rotating shaft 13. The rotor magnet 11 has a first end surface 11A, a second end surface 11B, a plurality of first coupling posts 111, a plurality of second coupling posts 112, and a shaft protruding portion 113. The second end surface 11B is opposite to the first end surface 11A. The first coupling posts 111 are protruded from the first end surface 11A. The second coupling posts 112 are protruded from the second end surface 11B. The shaft-receiving convex portion 113 is protruded from the second end surface 11B, and is located at a center position of the second end surface 11B.

In this embodiment, the rotor magnet 11 is integrally formed with the first coupling pillars 111, the second coupling pillars 112, and the shaft-protruding portion 113.

The first weight frame 12 is disposed on the first end surface 11A of the rotor magnet 11, and is used for setting at least one weight object 20. In this aspect, the first weight frame 12 is a non-magnetically conductive weight frame, and preferably, the outer diameter D1 of the first weight frame 12 is less than or equal to the outer diameter of the rotor magnet 11 D0 to prevent the first counterweight frame 12 from interfering with the setting of the stator when the counterweight rotor 10 is used as an inner rotor.

The first weight frame 12 has a first bottom portion 12B, a first outer peripheral wall 12C, and a first weight groove 12U. The first bottom 12B is connected to the first coupling posts 111 of the rotor magnet 11, and preferably, the height H1 of each of the first coupling posts 111 is greater than or equal to the thickness T1 of the first bottom 12B. In this embodiment, the first coupling pillars 111 pass through the first bottom portion 12B.

In one or more embodiments, the first coupling pillars 111 can be welded to the first bottom 12B to increase the bonding strength between the first coupling pillars 111 and the first bottom 12B.

In addition, in this aspect, the first bottom portion 12B has a circular shape, and the first bottom portion 12B has a first opening 12H. The first opening 12H is a portion of the first end surface 11A. bare.

The first counterweight slot 12U is used to set the at least one counterweight 20. In this embodiment, the first counterweight groove 12U has a first groove wall 12W therein, and the first groove wall 12W is used to set the at least one counterweight 20.

The rotating shaft 13 is connected to the rotor magnet 11, and the rotating shaft 13 is passed through the shaft-protruding portion 113. In this embodiment, the rotating shaft 13 is connected to the rotor magnet 11 in a tight fit manner. Alternatively, in another embodiment, the rotating shaft 13 and the rotor magnet 11 can be combined by shooting.

In order to further expand the weight adjustment area, in this embodiment, the weight rotor 10 further includes a second weight frame 14, and the second weight frame 14 is disposed on the second end surface 11B of the rotor magnet 11. For setting at least one counterweight 30.

In this aspect, the second weight frame 14 is a non-magnetic weight frame, and preferably, the outer diameter D2 of the second weight frame 14 is smaller than or equal to the outer diameter of the rotor magnet 11. D0 to avoid the second counterweight frame 14 from interfering with the setting of the stator when the counterweight rotor 10 is used as an inner rotor. In addition, the first weight frame 12 and the second weight frame 14 clamp the rotor magnet 11.

The second weight frame 14 has a second bottom portion 14B, a second outer peripheral wall 14C, and a second weight groove 14U. The second bottom 14B is connected to the second coupling pillars 112 of the rotor magnet 11, and preferably, the height H2 of each of the second coupling pillars 112 is greater than or equal to the thickness T2 of the second bottom 14B. In this embodiment, the second coupling pillars 112 pass through the second bottom portion 14B. In addition, the shaft-mounted convex portion 113 also penetrates the second bottom portion 14B, and the height of the shaft-mounted convex portion 113 does not exceed the height of the second weight frame 14.

In one or more embodiments, the second bonding pillars 112 can be welded to the second bottom 14B to increase the bonding strength between the second bonding pillars 112 and the second bottom 14B.

In addition, in the aspect of the present embodiment, the second bottom portion 14B has a circular shape, and the second bottom portion 14B has a second opening hole 14H. The second opening hole 14H is a part of the second end surface 11B. bare.

The second counterweight slot 14U is used to set the at least one counterweight 30. In this embodiment, a second groove wall 14W is provided in the second weight groove 14U, and the second groove wall 14W is used to set the at least one weight 30.

FIG. 4 shows a perspective view of a counterweight rotor according to a second embodiment of the present invention. FIG. 5 shows another perspective view of a counterweight rotor according to a second embodiment of the present invention. Fig. 6 shows a cross-sectional view of a counterweight rotor according to a second embodiment of the present invention, taken along line B-B of Fig. 4. With reference to FIG. 4, FIG. 5, and FIG. 6, the structural features of the counterweight rotor of the second embodiment of the present invention are basically the same as those of the first embodiment, and the difference is only in the first bottom portion 12B of the first counterweight frame 12. And the second bottom portion 14B of the second weight frame 14 is disk-shaped.

FIG. 7 shows a cross-sectional view of a counterweight rotor according to a third embodiment of the present invention. With reference to FIG. 6 and FIG. 7, the structural characteristics of the counterweight rotor of the third embodiment of the present invention are basically the same as those of the second embodiment. The only difference is that the rotor magnet 11 is omitted to make the shaft protruding portion 113. A positioning ring 17 is sleeved on the rotating shaft 13. Preferably, the positioning ring 17 is sleeved on the rotating shaft 13 in a locking or tight fit manner, and the positioning ring 17 is pressed against the second weight frame 14. . In this embodiment, the positioning ring 17 is pressed against the second bottom portion 14B of the second weight frame 14, and the positioning ring 17 is located in the second weight groove 14U.

FIG. 8 shows a perspective view of a counterweight rotor according to a fourth embodiment of the present invention. FIG. 9 shows another perspective view of a counterweight rotor according to a fourth embodiment of the present invention. Fig. 10 is a sectional view of a counterweight rotor according to a fourth embodiment of the present invention, taken along the line C-C of Fig. 8. With reference to FIG. 8, FIG. 9, and FIG. 10, the structural characteristics of the counterweight rotor of the fourth embodiment of the present invention are basically the same as those of the second embodiment, and the difference is only between the first peripheral wall 12C and the first end surface 11A. There is a first inner recessed portion 15 therebetween, and a second inner recessed portion 16 between the second outer peripheral wall 14C and the second end surface 11B.

In this embodiment, the at least one weight 20 may be disposed on the first inner concave portion 15, and preferably, the at least one weight 20 is in contact with the first outer peripheral wall 12C. Similarly, the at least one weight 30 may be disposed in the second inner recessed portion 16, and preferably, the at least one weight 30 is in contact with the second outer peripheral wall 14C.

FIG. 11 shows a cross-sectional view of a counterweight rotor according to a fifth embodiment of the present invention. With reference to FIG. 10 and FIG. 11, the structural characteristics of the counterweight rotor of the fifth embodiment of the present invention are basically the same as those of the fourth embodiment. The only difference is that the rotor magnet 11 is omitted to make the shaft-protruding portion 113. A positioning ring 17 is sleeved on the rotating shaft 13. Preferably, the positioning ring 17 is sleeved on the rotating shaft 13 in a locking or tight fit manner, and the positioning ring 17 is pressed against the second weight frame 14. . In this embodiment, the positioning ring 17 is pressed against the second bottom portion 14B of the second weight frame 14, and the positioning ring 17 is located in the second weight groove 14U.

With the above-mentioned structural configuration, the weight rotor 10 of the present invention can achieve the effect of rotational balance, can avoid the generation of magnetic powder, and will not destroy the original magnetic force distribution of the rotor magnet 11.

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.

10‧‧‧ counterweight rotor

11‧‧‧rotor magnet

11A‧‧‧first end face

11B‧‧‧Second end face

111‧‧‧The first combination column

112‧‧‧Second Combination Column

113‧‧‧ shaft projection

12‧‧‧The first counterweight frame

12B‧‧‧First bottom

12C‧‧‧First peripheral wall

12H‧‧‧First opening

12U‧‧‧First counterweight tank

12W‧‧‧The first groove wall

13‧‧‧ shaft

14‧‧‧Second Counterweight

14B‧‧‧Second bottom

14C‧‧‧Second peripheral wall

14H‧‧‧Second opening

14U‧‧‧Second Counterweight Slot

14W‧‧‧Second trough wall

15‧‧‧ the first recess

16‧‧‧Second inner recess

17‧‧‧ positioning ring

20‧‧‧ Counterweight

30‧‧‧ Counterweight

D0‧‧‧ Outer diameter of rotor magnet

D1‧‧‧ The outer diameter of the first counterweight

D2‧‧‧ The outer diameter of the second counterweight

H1‧‧‧The height of the first combined column

H2‧‧‧Height of the second combination post

T1‧‧‧Thickness of the first bottom

T2‧‧‧thickness of the second bottom

FIG. 1 shows a perspective view of a counterweight rotor according to a first embodiment of the present invention.

FIG. 2 shows another perspective view of the counterweight rotor according to the first embodiment of the present invention.

Fig. 3 shows a cross-sectional view of the counterweight rotor according to the first embodiment of the present invention, taken along line A-A of Fig. 1.

FIG. 4 shows a perspective view of a counterweight rotor according to a second embodiment of the present invention.

FIG. 5 shows another perspective view of a counterweight rotor according to a second embodiment of the present invention.

Fig. 6 shows a cross-sectional view of a counterweight rotor according to a second embodiment of the present invention, taken along line B-B of Fig. 4.

FIG. 7 shows a cross-sectional view of a counterweight rotor according to a third embodiment of the present invention.

FIG. 8 shows a perspective view of a counterweight rotor according to a fourth embodiment of the present invention.

FIG. 9 shows another perspective view of a counterweight rotor according to a fourth embodiment of the present invention.

Fig. 10 is a sectional view of a counterweight rotor according to a fourth embodiment of the present invention, taken along the line C-C of Fig. 8.

FIG. 11 shows a cross-sectional view of a counterweight rotor according to a fifth embodiment of the present invention.

Claims (41)

A counterweight rotor includes: a rotor magnet having a first end surface; a first counterweight frame provided on the first end surface of the rotor magnet for setting at least one counterweight; and a rotating shaft connected to the rotor magnet. For example, the counterweight rotor of claim 1, wherein the rotor magnet has a plurality of first coupling pillars, and the first coupling pillars are convexly disposed on the first end surface. The counterweight rotor of claim 2, wherein the first counterweight frame has a first bottom, and the first bottom is connected to the first coupling columns. A counterweight rotor as claimed in claim 3, wherein the first coupling columns run through the first bottom. The counterweight rotor of claim 3, wherein the first coupling columns are welded to the first bottom. For example, the counterweight rotor of claim 3, wherein the height of each of the first coupling columns is greater than or equal to the thickness of the first bottom. The weighted rotor of claim 3, wherein the first bottom has a first opening, and the first opening exposes a part of the first end surface. The counterweight rotor as claimed in claim 3, wherein the first bottom is in a ring shape. The weighted rotor of claim 3, wherein the first bottom portion is in the shape of a disk. The counterweight rotor of claim 2, wherein the rotor magnetic system is integrally formed with the first coupling columns. As claimed in claim 1, the outer diameter of the first counterweight is smaller than or equal to the outer diameter of the rotor magnet. The counterweight rotor of claim 1, wherein the first counterweight frame has a first counterweight slot, and the first counterweight slot is used for setting the at least one counterweight. The counterweight rotor of claim 12, wherein the first counterweight groove has a first groove wall therein, and the first groove wall is used for setting the at least one counterweight. As in the counterweight rotor of claim 1, wherein the first counterweight frame has a first outer peripheral wall, a first inner concave portion is formed between the first outer peripheral wall and the first end surface, and the at least one counterweight is disposed on The first concave portion. The counterweight rotor of claim 14, wherein the at least one counterweight is in contact with the first outer peripheral wall. The counterweight rotor of claim 1, wherein the first counterweight frame is a non-magnetically conductive counterweight frame. If the counterweight rotor of claim 1 further includes a second counterweight frame, the rotor magnet further has a second end surface, the second end surface is opposite to the first end surface, and the second weight frame is disposed on the rotor magnet. Of the second end surface. For example, the counterweight rotor of claim 17, wherein the rotor magnet further has a plurality of second coupling columns, and the second coupling columns are protruded on the second end surface. For example, the counterweight rotor of claim 18, wherein the second counterweight frame has a second bottom, and the second bottom is connected to the second coupling columns. A counterweight rotor as claimed in claim 19, wherein the second coupling columns run through the second bottom. The weighted rotor of claim 19, wherein the second coupling columns are welded to the second bottom. The weighted rotor of claim 19, wherein the height of each of the second coupling columns is greater than or equal to the thickness of the second bottom. The weighted rotor of claim 19, wherein the second bottom has a second opening, and the second opening exposes a part of the second end surface. The weighted rotor as claimed in claim 19, wherein the second bottom is circular. The weighted rotor of claim 19, wherein the second bottom is disc-shaped. The weighted rotor of claim 18, wherein the rotor magnetic system integrally forms the second coupling columns. The counterweight rotor of claim 17, wherein the outer diameter of the second counterweight frame is smaller than or equal to the outer diameter of the rotor magnet. The counterweight rotor of claim 17, wherein the second counterweight frame has a second counterweight slot, and the second counterweight slot is used for setting at least one counterweight. The counterweight rotor according to claim 28, wherein the second counterweight groove has a second groove wall therein, and the second groove wall is used for setting the at least one counterweight. The counterweight rotor of claim 17, wherein the second counterweight frame has a second outer peripheral wall, and a second inner concave portion is provided between the second outer peripheral wall and the second end surface, and the second inner concave portion is used for setting At least one counterweight. The counterweight rotor of claim 30, wherein the at least one counterweight is in contact with the second outer peripheral wall. The weighted rotor of claim 17, wherein the second weighted frame is a non-magnetically weighted weighted frame. According to the weighted rotor of claim 17, wherein the rotor magnet further has a shaft-mounting convex portion, the shaft-mounting convex portion is convexly provided on the second end surface, and the rotating shaft is penetrated through the shaft-mounting convex portion. The counterweight rotor of claim 33, wherein the second counterweight frame has a second bottom portion, and the shaft-mounting convex portion penetrates the second bottom portion. If the weighted rotor of item 33 is requested, the height of the shaft-mounted projection does not exceed the height of the second weighted frame. If the counterweight rotor of claim 17 further includes a positioning ring, the positioning ring is sleeved on the rotating shaft and presses against the second counterweight frame. The counterweight rotor of claim 36, wherein the second counterweight frame has a second bottom, and the positioning ring is pressed against the second bottom. The counterweight rotor of claim 36, wherein the second counterweight frame has a second counterweight groove, and the positioning ring is located in the second counterweight groove. The weighted rotor of claim 17, wherein the first weighted frame and the second weighted frame clamp the rotor magnet. For example, the counterweight rotor of claim 1, wherein the rotating shaft is combined with the rotor magnetic system in a shot-packing manner. The weighted rotor of claim 1, wherein the rotating shaft is connected to the rotor magnet in a tight fit.